A universal fixture for testing the function of a notebook computer mainboard

Abstract

The utility model discloses a kind of notebook computer mainboard function test's universal fixture, it is related to universal fixture technical field.The utility model includes, universal fixture, including base, the mounting bracket located at the upper end of base, the hydraulic rod located in mounting bracket interior, the detection plate located at the lower end of hydraulic rod;Buffer structure, including the placement plate located above base, the guide pillar that is symmetrically distributed at the lower end of placement board, the oil cylinder fixed in the base interior, the piston located at the lower end of guide pillar and slidingly installed in the oil cylinder interior, the installation groove being opened in the lower end interior of guide pillar, the spring between installation groove and oil cylinder, the oil hole being opened in plug rod and passing through installation groove;Access structure, including the moving station located above base.The utility model is by being arranged buffer structure and access structure, to solve the error that detection plate drive structure oil pressure control assembly exists for long-term use, excessive stroke causes pressure loss to mainboard and the problem of narrow space when accessing mainboard is inconvenient.

Description

Technical Field

[0001] This utility model relates to the field of universal fixture technology, and in particular to a universal fixture for testing the functions of a laptop motherboard. Background Technology

[0002] In the field of laptop manufacturing and repair, the motherboard, as the core hardware hub, needs to be tested using fixtures to ensure that its power supply, interfaces, and core component communication functions are normal after leaving the factory or after repair.

[0003] However, existing motherboard testing fixtures have significant drawbacks: First, the risk of motherboard damage is high. The testing board in the fixture is mostly driven by hydraulic rods, and the hydraulic control components are prone to errors after long-term use, leading to excessive travel of the testing board, directly squeezing the motherboard, causing solder joints to fall off, component damage, and increased material loss. Second, motherboard storage and retrieval are inconvenient. The testing area of ​​the fixture is small, and the motherboard needs to be vertically placed and removed in the narrow space below the testing board, which is difficult to operate and easily damages the motherboard or fixture components, reducing testing efficiency. Therefore, those skilled in the art provide a universal fixture for functional testing of notebook computer motherboards to solve the problems mentioned in the background art. Utility Model Content

[0004] 1. Technical Solution

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a universal fixture for testing the functionality of a laptop motherboard, comprising,

[0007] The universal fixture includes a base, a mounting bracket located at the upper end of the base, a hydraulic rod located inside the mounting bracket, and a detection plate located at the lower end of the hydraulic rod;

[0008] The buffer structure includes a placement plate located above the base, guide posts symmetrically distributed at the lower end of the placement plate, an oil cylinder fixed inside the base, a piston located at the lower end of the guide post and slidably installed inside the oil cylinder, a mounting groove opened in the lower end of the guide post, a spring located between the mounting groove and the oil cylinder, and an oil hole opened in the piston rod and penetrating the mounting groove.

[0009] as well as;

[0010] Access structure, including a moving stage located above the base.

[0011] Furthermore, the upper end of the base is provided with symmetrically distributed guide rods, and the rear end of the detection plate is embedded with symmetrically distributed sliding sleeves that are slidably sleeved on the outer wall of the guide rods.

[0012] Specifically, the guide rod slides inside the sliding sleeve to guide the longitudinally moving detection plate.

[0013] Furthermore, four sets of positioning holes are provided inside the side of the placement plate, and positioning rods connected to the moving platform at their lower ends are slidably inserted into the positioning holes. A main board placement area is provided inside the upper end of the placement plate, located between the positioning rods.

[0014] Specifically, the positioning hole slides on the outer wall of the positioning rod to guide the longitudinally moving placement plate, while the positioning rod also serves to limit and position the main board.

[0015] Furthermore, the mobile platform is embedded with symmetrically distributed guide sleeves, the guide post is slidably installed inside the guide sleeves, the upper end of the oil cylinder is embedded with a sealing ring, the lower end of the guide post is slidably installed inside the sealing ring, and the lower end of the oil cylinder is provided with a support plate connected to the mobile platform.

[0016] Specifically, the guide column is longitudinally slidably supported inside the placement platform through the guide sleeve. When the guide column slides inside the oil cylinder, it is longitudinally slidably supported by the sealing ring, which at the same time prevents the leakage of hydraulic oil inside the oil cylinder during sliding. The support plate fixes the oil cylinder to the lower end of the placement platform and moves synchronously with the placement platform.

[0017] Furthermore, the machine base is provided with symmetrically distributed guide rails, and the lower end of the moving platform is provided with symmetrically distributed sliders that are slidably mounted on the outer wall of the guide rails.

[0018] Specifically, the moving stage is guided by a slider sliding on the outer wall of the guide rail.

[0019] Furthermore, the machine base is provided with a bearing seat and a motor. The output end of the motor is provided with a screw that is rotatably installed inside the bearing seat. A nut is threadedly installed on the outer wall of the screw. A support rod connected to the moving platform is provided at the upper end of the nut.

[0020] Specifically, when the motor drives the screw to rotate, it receives rotational support through the bearing housing, which improves the rotational stability of the screw. At the same time, the nut is connected to the moving platform through the connecting rod, and the screw and nut achieve linear movement and engagement.

[0021] 2. Beneficial effects

[0022] Compared with existing technologies, the advantages of this utility model are:

[0023] This utility model places the motherboard of a laptop computer on a placement plate on a universal jig. A detection plate selectively docks with the motherboard to perform functional tests on the motherboard. When the detection plate docks with the motherboard and moves toward the placement plate, pressure is applied to the spring through the guide post. The spring contracts under force, and its own elastic force provides a certain support force to compensate for the squeezing force of the docking plate during the transition displacement, thus protecting the computer motherboard.

[0024] During the motherboard testing and retrieval process, the moving stage housing at the top of the universal fixture moves laterally, detaching from the bottom of the testing board. This avoids the inconvenience of limited space in retrieving the motherboard, increases the operating space, and makes motherboard testing more convenient.

[0025] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a front-view three-dimensional structural diagram of the present invention;

[0028] Figure 2 This is a schematic diagram of the main sectional three-dimensional structure of this utility model;

[0029] Figure 3 This is a three-dimensional structural diagram of the placement plate of this utility model from a bottom view;

[0030] Figure 4 This is a bottom-view perspective view of the access structure of this utility model.

[0031] Figure 5 This is a front-view three-dimensional structural diagram of the placement plate of this utility model;

[0032] Figure 6 This is a top-view three-dimensional structural diagram of the placement plate of this utility model;

[0033] Figure 7 This is a three-dimensional structural diagram of the oil cylinder of this utility model.

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 100. Universal jig; 101. Mounting bracket; 102. Machine base; 103. Hydraulic rod; 104. Guide rod; 105. Sliding sleeve; 106. Detection plate;

[0036] 200. Buffer structure; 201. Placement plate; 202. Main board placement area; 203. Positioning hole; 204. Positioning rod; 205. Oil cylinder; 206. Spring; 207. Center rod; 208. Piston; 209. Oil hole; 210. Mounting groove; 211. Sealing ring; 212. Guide sleeve; 213. Guide post; 214. Support plate;

[0037] 300. Storage and retrieval structure; 301. Support rod; 302. Screw; 303. Motor; 304. Nut; 305. Bearing bracket; 306. Slider; 307. Guide rail; 308. Moving stage. Detailed Implementation

[0038] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0039] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0042] Example 1

[0043] Please see Figure 1-7 As shown, this embodiment is a universal fixture for testing the functionality of a laptop motherboard, comprising:

[0044] The universal jig 100 includes a base 102, a mounting bracket 101 located at the upper end of the base 102, a hydraulic rod 103 located inside the mounting bracket 101, and a detection plate 106 located at the lower end of the hydraulic rod 103.

[0045] The upper end of the base 102 is provided with symmetrically distributed guide rods 104, and the rear end of the detection plate 106 is embedded with symmetrically distributed sliding sleeves 105 that are slidably sleeved on the outer wall of the guide rods 104.

[0046] The buffer structure 200 includes a placement plate 201 located above the base, guide posts 213 symmetrically distributed at the lower end of the placement plate 201, an oil cylinder 205 fixed inside the base 102, a piston 208 located at the lower end of the guide post 213 and slidably installed inside the oil cylinder 205, a mounting groove 210 opened inside the lower end of the guide post 213, a spring 206 located between the mounting groove 210 and the oil cylinder 205, and an oil hole 209 opened on the piston rod and passing through the mounting groove 210.

[0047] The placement plate 201 has four sets of positioning holes 203 inside its side. Positioning rods 204 connected to the moving stage 308 at their lower ends are slidably inserted into the positioning holes 203. The upper end of the placement plate 201 has a main board placement area 202 located between the positioning rods 204.

[0048] The movable stage 308 is internally fitted with symmetrically distributed guide sleeves 212, the guide post 213 is slidably installed inside the guide sleeves 212, the upper end of the oil cylinder 205 is internally fitted with a sealing ring 211, the lower end of the guide post 213 is slidably installed inside the sealing ring 211, and the lower end of the oil cylinder 205 is provided with a support plate 207 connected to the movable stage 308.

[0049] as well as;

[0050] Access structure 300 includes a movable stage 308 located above base 102;

[0051] The base 102 is provided with symmetrically distributed guide rails 307 inside, and the lower end of the moving stage 308 is provided with symmetrically distributed sliders 306 that are slidably installed on the outer wall of the guide rails 307.

[0052] The base 102 is provided with a bearing seat 305 and a motor 303. The output end of the motor 303 is provided with a screw 302 rotatably installed inside the bearing seat 305. A nut 304 is threadedly installed on the outer wall of the screw 302. A support rod 301 connected to the moving table 308 is provided on the upper end of the nut 304.

[0053] Based on the real-time steps of Embodiment 1: First, fix the base 102 on the workbench. Install the mounting bracket 101 on the upper end of the base 102 with bolts. Connect the lower end of the hydraulic rod 103 to the test plate 106 via a flange. The test plate 106 is made of PCB material. The lower end is welded with test probes that match the motherboard interface. The probe spacing is 0.1mm to ensure precise docking with the motherboard contacts. The guide rod 104 is made of stainless steel to ensure that the test plate 106 moves longitudinally without deviation. The cooperation between the guide rod 104 and the sliding sleeve 105 can limit the lateral sway of the test plate 106 and prevent the test probes from being misaligned with the motherboard contacts. First, install four sets of positioning rods 204 on the upper end of the moving stage 308. The positioning rods 204 are rectangularly distributed to form the motherboard placement area 202. The size is adapted to mainstream notebook motherboards. The placement plate 201 is made of acrylic material. Four sets of positioning holes 203 are opened on the side. The positioning holes 203 are slidably inserted into the outer wall of the positioning rods 204 to ensure that the placement plate 201 can slide longitudinally along the positioning rods 204.

[0054] Motor 303 is a stepper motor. The output end of motor 303 is connected to a stainless steel screw 302. The screw 302 is rotatably mounted inside the bearing housing 305. The nut 304, which is threaded onto the outer wall of the screw 302, is made of copper and matches the screw 302. A stainless steel support rod 301 is welded to the upper end of the nut 304. The upper end of the support rod 301 is fixed to the lower end of the moving stage 308. When motor 303 drives screw 302 to rotate, nut 304 drives moving stage 308 to slide laterally along guide rail 307 through support rod 301, which can make moving stage 308 completely detach from below detection plate 106.

[0055] Traditional fixtures require the motherboard to be inserted vertically from below the test plate 106, which can easily damage the motherboard during operation. This fixture achieves horizontal pulling through the storage and retrieval structure 300. Before testing, the motor 303 is started, driving the screw 302 to rotate clockwise. The nut 304 moves along the screw 302 away from the test plate 106, causing the moving stage 308 to slide along the guide rail 307 until the moving stage 308 is completely detached from below the test plate 106. At this point, the operating space is expanded. The operator places the laptop motherboard into the motherboard placement area 202 of the placement plate 201, with the edge of the motherboard close to the positioning rod 204. The positioning rod 204 acts as a limit to prevent the motherboard from shifting. The motor 303 is started in reverse, and the screw 302 drives the moving stage 308 to slide along the guide rail 307 towards below the test plate 106 until the motherboard is directly below the test plate 106. At this point, the positioning rod 204 is aligned with the test probe position of the test plate 106, completing the motherboard storage and positioning.

[0056] If the hydraulic rod 103 of a traditional fixture has an error in oil pressure control, such as wear of the oil pressure valve after long-term use, resulting in an extra stroke of 2-3mm, the detection plate 106 will excessively compress the main board, causing the main board solder joints to fall off or components to be damaged. The buffer structure 200 of this fixture uses the elasticity of the spring 206 and hydraulic damping to offset the excessive pressure. When the hydraulic rod 103 is activated, it pushes the detection plate 106 to move downward along the guide rod 104. The test probe gradually approaches the main board contact. When the probe contacts the main board and continues to apply downward pressure, the main board transmits the pressure to the guide post 213 through the placement plate 201. The guide post 213 drives the piston 208 to compress the hydraulic oil in the oil cylinder 205 downward. The hydraulic oil flows through Oil flows into the mounting groove 210 of the guide post 213 through the oil passage 209. Simultaneously, the spring 206 is compressed, and its elastic force provides counter-support to the guide post 213. If the detection board 106 moves excessively downwards due to oil pressure error (e.g., by 2mm), the spring 206 is further compressed, increasing the compression by 2mm and increasing the elastic force. The damping force of the hydraulic oil also increases synchronously, both counteracting excess pressure and ensuring that the pressure on the main board remains within a safe range to prevent pressure damage. Once the detection board 106 is in stable contact with the main board, its test probes connect to the main board's power supply interface, data interface, and core component contacts, sending commands to the main board via an external testing system.

[0057] To test power supply stability, a standard voltage is output to the CPU and memory module, and the probe collects the actual voltage value. A deviation of ≤±5% is considered acceptable.

[0058] The test interface functions include transmitting test files via a USB probe to verify the data transmission rate and outputting signals via an HDMI probe to verify the display function.

[0059] The core communication is detected by sending instructions to the CPU to verify whether the communication links between the CPU and the hard drive and graphics card are working properly.

[0060] Test data is transmitted to an external system via the detection board 106, which automatically generates a "pass / fail" report. When an anomaly occurs, the specific faulty module is marked, such as "USB interface not responding" or "memory power supply deviation is too large".

[0061] Traditional fixtures lack a buffer structure 200. Over time, hydraulic pressure errors in the hydraulic rod 103 can cause excessive downward movement of the detection plate 106, leading to pressure damage to the main board. This fixture's buffer structure 200 uses a spring 206 and hydraulic oil for synergistic buffering. Even if hydraulic pressure errors cause excessive travel, it prevents overload damage to the main board. Traditional fixtures require the main board to be placed vertically below the detection plate 106, requiring careful alignment by operators. This fixture's storage and retrieval structure 300 allows the moving stage 308 to be pulled out laterally, expanding the operating space. Operators can directly place the main board flat, reducing storage and retrieval time and improving efficiency. Traditional fixtures rely on manual alignment of the main board and probes, which can easily lead to testing errors due to misalignment. For example, if the probe does not contact the contact point, it may misjudge the interface as faulty. This fixture uses a dual positioning system of "positioning rod 204 + guide rod 104." The positioning rod 204 restricts the lateral displacement of the main board, and the guide rod 104 restricts the lateral displacement of the detection plate 106, ensuring precise contact between the probe and the main board contact point. This reduces the testing error rate, avoids misjudging pass or fail, and improves testing accuracy.

[0062] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A universal fixture for testing the function of a laptop motherboard, characterized in that: include, The universal jig (100) includes a base (102), a mounting bracket (101) located at the upper end of the base (102), a hydraulic rod (103) located inside the mounting bracket (101), and a detection plate (106) located at the lower end of the hydraulic rod (103). The buffer structure (200) includes a placement plate (201) located above the base, guide posts (213) symmetrically distributed at the lower end of the placement plate (201), an oil cylinder (205) fixed inside the base (102), a piston (208) located at the lower end of the guide post (213) and slidably installed inside the oil cylinder (205), a mounting groove (210) opened inside the lower end of the guide post (213), a spring (206) located between the mounting groove (210) and the oil cylinder (205), and an oil hole (209) opened on the piston rod and passing through the mounting groove (210); as well as; Access structure (300) includes a mobile stage (308) located above the base (102).

2. The universal fixture for testing the function of a laptop motherboard according to claim 1, characterized in that: The upper end of the base (102) is provided with symmetrically distributed guide rods (104), and the rear end of the detection plate (106) is embedded with symmetrically distributed sliding sleeves (105) that are slidably sleeved on the outer wall of the guide rods (104).

3. The universal fixture for testing the function of a laptop motherboard according to claim 1, characterized in that: The placement plate (201) has four sets of positioning holes (203) inside its side. Positioning rods (204) with their lower ends connected to the moving platform (308) are slidably inserted into the positioning holes (203). The upper end of the placement plate (201) has a main board placement area (202) located between the positioning rods (204).

4. The universal fixture for testing the function of a laptop motherboard according to claim 1, characterized in that: The movable stage (308) is internally fitted with symmetrically distributed guide sleeves (212), the guide post (213) is slidably installed inside the guide sleeves (212), the upper end of the oil cylinder (205) is internally fitted with a sealing ring (211), the lower end of the guide post (213) is slidably installed inside the sealing ring (211), and the lower end of the oil cylinder (205) is provided with a support plate (207) connected to the movable stage (308).

5. The universal fixture for testing the function of a laptop motherboard according to claim 1, characterized in that: The base (102) is provided with symmetrically distributed guide rails (307), and the lower end of the moving stage (308) is provided with symmetrically distributed sliders (306) that are slidably installed on the outer wall of the guide rails (307).

6. The universal fixture for testing the function of a laptop motherboard according to claim 1, characterized in that: The base (102) is provided with a bearing seat (305) and a motor (303) inside. The output end of the motor (303) is provided with a screw (302) rotatably installed inside the bearing seat (305). A nut (304) is threadedly installed on the outer wall of the screw (302). A support rod (301) connected to the moving platform (308) is provided on the upper end of the nut (304).

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