A lever press test device

Abstract

The utility model relates to automatic equipment technical field discloses a kind of lever press fitting test devices, by adopting lever principle, effectively solve the many problems of traditional test device manual pressure application.First, using the cooperation of lever handle and cam structure, it can be with small operating force to realize the stable depression of the measured device, significantly reduce the physical burden of test personnel, reduce the risk of occupational strain caused by long-term repeated force, while improving work efficiency.Secondly, the adaptive hook design of the clamping piece and the clamping piece on the base provides a stable fixing mechanism for the device, ensuring that it does not loosen during the testing process, thereby ensuring the accuracy of the test results.In addition, the device has simple structure, convenient operation, high practicability and reliability, and can effectively improve the quality and efficiency of electronic device electrical property test.

Description

Technical Field

[0001] This utility model relates to the field of automation equipment technology, and in particular to a lever pressing test device. Background Technology

[0002] In the production process of electronic devices, electrical testing of the devices under test is an important step in ensuring product quality.

[0003] Currently, traditional testing equipment typically employs a simple pressing method, manually applying pressure to the device under test (DUT) to bring it into contact with the probe module. However, this method has the following problems:

[0004] 1. During manual pressure application, due to the lack of effective mechanical assistance, testers often need to apply considerable force to ensure full contact between the device under test and the probe module. This high-intensity physical labor not only easily leads to fatigue and reduced work efficiency for testers, but may also cause occupational strain injuries due to long-term repetitive exertion, posing a potential threat to the health of testers.

[0005] 2. The lack of a stable fixing mechanism makes it easy to loosen during the testing process, affecting the accuracy of the test results.

[0006] Therefore, improvements to existing technologies are necessary.

[0007] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0008] This invention provides a lever compression testing device to solve the problems existing in the prior art.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A lever compression testing device includes a base, a probe module, and a lever pressing assembly; wherein,

[0011] The base has a groove for placing the device under test;

[0012] The probe module is disposed in the groove and located below the device under test, for electrical connection with the device under test to test the device under test;

[0013] The lever pressing component can be detachably covered on the base and is used to press down the device under test located in the groove and placed on the probe module using the lever principle, so as to cooperate with the probe module for testing;

[0014] The lever pressing assembly includes a pressing mechanism, a cover, a lever handle, a cam structure, and a latch.

[0015] The cover has a mounting cavity on the side facing the base; the cover has a mounting block on the side away from the base.

[0016] The pressing mechanism is disposed in the mounting cavity and can contact the device under test when the lever pressing assembly is closed on the base.

[0017] The cam structure is rotatably mounted on the mounting block;

[0018] The lever handle is connected to the cam structure. By operating the lever handle to rotate from the initial position to the pressing position, the cam structure can be driven to rotate eccentrically, thereby pressing down the cover and the pressing mechanism, so that the pressing mechanism applies downward pressure to the device under test.

[0019] The hook is provided on the cover and is used to engage with the buckle on the base when the lever pressing component is closed on the base, so as to firmly fix the lever pressing component on the base.

[0020] Furthermore, in the lever pressing test device, the pressing mechanism includes a first pressure plate, a second pressure plate, and a spring floating assembly;

[0021] The first pressure plate and the second pressure plate are arranged sequentially from top to bottom in the mounting cavity; the second pressure plate can contact the device under test when the lever pressing assembly is closed on the base.

[0022] The spring floating assembly is disposed between the first pressure plate and the second pressure plate, and can provide elastic buffering when the pressing mechanism applies downward pressure to the device under test.

[0023] Furthermore, in the lever compression testing device, the spring floating assembly includes several springs and guide posts;

[0024] The guide post passes through the first pressure plate and the second pressure plate to ensure that the relative movement of the first pressure plate and the second pressure plate in the vertical direction is smooth.

[0025] The spring is sleeved on the guide post and located between the first pressure plate and the second pressure plate to provide elastic cushioning.

[0026] Furthermore, in the lever pressing test device, the pressing mechanism also includes a heat dissipation structure;

[0027] The heat dissipation structure passes through the first pressure plate and contacts the second pressure plate, and is used to conduct and dissipate the heat generated by the device under test during the test when the second pressure plate applies downward pressure to the device under test.

[0028] Furthermore, in the lever pressing test device, the heat dissipation structure is a heat dissipation fin;

[0029] The heat dissipation fins have a fin-like structure and their surface is coated with a heat dissipation coating with high emissivity.

[0030] Furthermore, the lever compression testing device also includes a guide pin;

[0031] The guide pin is disposed on the base;

[0032] The cover is provided with a guide hole that matches the guide pin;

[0033] The guide pin passes through the guide hole and is used to guide the cover to be accurately aligned with the base in a predetermined direction when the lever pressing assembly is closed on the base.

[0034] Furthermore, in the lever compression testing device, the guide pin includes a positioning section and a guide section;

[0035] The positioning section is disposed on the base and is used to cooperate with the guide hole to achieve precise positioning of the cover;

[0036] The guide section has a conical structure and is connected to the positioning section; the diameter of the guide section gradually decreases from near the base to away from the base, and is used to guide the guide hole to smoothly align with the positioning section when the cover is close to the base.

[0037] Furthermore, in the lever pressing test device, the mounting block has mounting holes;

[0038] A foolproof component is inserted into the mounting hole;

[0039] The foolproof component includes a foolproof pin and a foolproof spring;

[0040] The anti-fool spring is sleeved on the anti-fool pin;

[0041] When the lever handle is operated to drive the cam structure to rotate eccentrically, the lever handle contacts the anti-misalignment pin and overcomes the elastic restoring force of the anti-misalignment spring, pushing the anti-misalignment pin to abut against the latch, thereby preventing the latch from accidentally loosening.

[0042] Furthermore, in the lever compression testing device, the mounting block is also provided with an oil injection hole;

[0043] The oil injection hole is used to inject lubricating oil to reduce the friction of the lever pressing assembly during operation.

[0044] Furthermore, in the lever pressing test device, the formula for the force applied to the lever handle when rotating it from the initial position to the pressing position is:

[0045] F1 = (F2 * L2) / L1;

[0046] Wherein, F1 is the force applied to the lever handle, L1 is the distance from the end of the lever handle to the center of the rotating shaft of the cam structure, F2 is the downward pressure applied by the cam structure to the device under test, and L2 is the distance from the center of the rotating shaft of the cam structure to the protruding part of the cam structure that abuts against the cover.

[0047] Compared with the prior art, the present invention has the following beneficial effects:

[0048] This utility model provides a lever-based pressure testing device that effectively solves many problems associated with manual pressure application in traditional testing devices by employing the lever principle. Firstly, the combination of the lever handle and cam structure allows for stable pressure application to the device under test with minimal operating force, significantly reducing the physical burden on testing personnel, lowering the risk of occupational strain injuries caused by prolonged repetitive force application, and improving work efficiency. Secondly, the matching hook design between the hook and the base provides a stable fixing mechanism, ensuring the device will not loosen during testing and thus guaranteeing the accuracy of the test results. Furthermore, the device has a simple structure, is easy to operate, and possesses high practicality and reliability, effectively improving the quality and efficiency of electrical testing of electronic devices.

[0049] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0051] Figure 1This is one of the structural schematic diagrams of a lever compression testing device provided in this embodiment of the present invention;

[0052] Figure 2 This is a second schematic diagram of the structure of a lever compression testing device provided in this embodiment of the present invention;

[0053] Figure 3 This is a schematic cross-sectional view of a lever compression testing device provided in an embodiment of the present invention;

[0054] Figure 4 This is a schematic diagram of the structure of the base and probe module provided in this embodiment of the utility model;

[0055] Figure 5 This is the third structural schematic diagram of a lever compression testing device provided in this embodiment of the present invention;

[0056] Figure 6 This is the fourth structural schematic diagram of a lever compression testing device provided in this embodiment of the present invention;

[0057] Figure 7 This is the fifth schematic diagram of the structure of a lever compression testing device provided in this embodiment of the present invention;

[0058] Figure 8 This is the sixth schematic diagram of the structure of a lever compression testing device provided in this embodiment of the present invention;

[0059] Figure 9 This is a schematic diagram of L1 and L2 mentioned in the embodiments of this utility model.

[0060] Figure label:

[0061] 1. Base, 2. Probe module, 3. Lever pressing component, 4. Groove, 5. Device under test, 6. Buckle, 7. Guide pin;

[0062] The pressing mechanism 301, the cover 302, the lever handle 303, the cam structure 304, the hook 305, the mounting cavity 306, the mounting block 307, the foolproof component 308, and the oil injection hole 309.

[0063] First pressure plate 3011, second pressure plate 3012, spring floating assembly 3013, heat dissipation structure 3014. Detailed Implementation

[0064] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0065] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0066] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0067] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0068] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0069] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0070] In this application, expressions such as "greater than", "less than", and "exceeding" are understood to exclude the stated number; expressions such as "above", "below", and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times", unless otherwise explicitly specified.

[0071] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0072] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0073] Please refer to Figure 1-8 This utility model provides a lever pressing test device, including a base 1, a probe module 2, and a lever pressing assembly 3; the following will provide a comprehensive and in-depth analysis of the structural features, connection relationships, and working principles of each component of the device:

[0074] The base 1 serves as the basic support structure of the entire testing device. Its upper surface is precisely provided with a groove 4 of a specific specification. This groove 4 is designed specifically for placing the device under test 5. Through precise matching of size and shape, it ensures that the device under test 5 can be stably positioned in the predetermined position during the test, avoiding the impact on the accuracy of the test due to positional deviation.

[0075] The probe module 2 is precisely positioned inside the groove 4, and when the device under test (DUT) 5 is placed inside the groove 4, the probe module 2 is located directly below the DUT 5. The probe module 2 consists of multiple high-precision probes arranged in an orderly manner. These probes possess excellent conductivity and mechanical stability, enabling reliable electrical connection with the corresponding test points of the DUT 5. During testing, the probe module 2 accurately transmits test signals to the DUT 5 through electrical contact and collects its feedback electrical parameters, thereby completing a comprehensive test and verification of the various electrical performance indicators of the DUT 5.

[0076] The lever pressing component 3 is detachably fitted onto the base 1. This component's design fully utilizes the lever principle, aiming to achieve stable pressing of the device under test 5 with minimal operating force, thereby cooperating with the probe module 2 to complete efficient electrical testing. Specifically, the lever pressing component 3 is precisely composed of key components such as a pressing mechanism 301, a cover 302, a lever handle 303, a cam structure 304, and a latch 305.

[0077] The cover 302 serves as the main structure of the lever pressing assembly 3. It has a suitable mounting cavity 306 on the side facing the base 1, which provides a stable mounting space for the pressing mechanism 301. The side of the cover 302 away from the base 1 is provided with a sturdy mounting block 307, which provides a reliable support platform for the installation and rotation of the cam structure 304.

[0078] The pressing mechanism 301 is precisely positioned inside the mounting cavity 306, corresponding to the device under test 5. When the lever pressing assembly 3 is closed on the base 1, the pressing mechanism 301 can make close contact with the upper surface of the device under test 5, thus preparing for subsequent pressing operations.

[0079] The cam structure 304 is rotatably mounted on the mounting block 307 via a precision bearing. Its unique eccentric wheel design enables significant displacement changes during rotation, thereby providing strong power support for the pressing operation.

[0080] The lever handle 303 and the cam structure 304 are tightly connected by a mechanical connector. The tester can operate the lever handle 303 to move it from its initial position (e.g., ...). Figure 1 (As shown) Smoothly rotate to the pressed position (as shown) Figure 2 (As shown). During this process, the movement of the lever handle 303 will cause the cam structure 304 to rotate eccentrically, thereby pressing down the cover 302 and the pressing mechanism 301 synchronously, so that the pressing mechanism 301 applies a precise and controllable downward force to the device under test 5. This pressing method based on the lever principle not only significantly reduces the difficulty of operation and physical exertion for testers, but also ensures the uniformity and stability of the downward force, providing a strong guarantee for high-quality electrical testing.

[0081] The hook 305 is cleverly positioned at a specific location on the cover 302. When the lever pressing component 3 is closed onto the base 1, the hook 305 can precisely engage with the pre-set buckle 6 on the base 1. This unique engagement design provides a stable and reliable fixing mechanism for the entire testing device, effectively preventing testing errors caused by loosening of the device during testing, thereby ensuring the accuracy and reliability of the test results.

[0082] It is important to emphasize that the lever pressing test device proposed in this embodiment of the invention successfully solves many problems existing in the manual pressing process of traditional test devices by cleverly utilizing the lever principle. Firstly, with the synergistic effect of the lever handle 303 and the cam structure 304, the tester only needs to apply a small operating force to achieve stable downward pressure on the device under test 5. This innovative design not only significantly reduces the physical burden on the tester and lowers the risk of occupational strain caused by long-term repetitive force, but also greatly improves the efficiency and comfort of the testing work. Secondly, the matching hook design between the hook 305 and the buckle 6 on the base 1 provides unparalleled stability to the device, ensuring that the device remains stable throughout the testing process, thus laying a solid foundation for obtaining accurate and reliable test results. Furthermore, the device has a simple and clear overall structure, is convenient and efficient to operate, and possesses high practicality and reliability. It can effectively improve the quality and efficiency of electrical testing of electronic devices, providing strong technical support for quality inspection work in the electronics manufacturing industry.

[0083] In a specific and feasible implementation of this embodiment, the pressing mechanism 301 is the core component of the lever pressing assembly 3 to achieve precise pressing function. Its internal structure is precise and its function is clear. It is mainly composed of three key components: the first pressing plate 3011, the second pressing plate 3012, and the spring floating assembly 3013.

[0084] The first pressure plate 3011 and the second pressure plate 3012 are arranged sequentially in a rigorous hierarchical structure within the specific mounting space of the mounting cavity 306. The first pressure plate 3011 serves as the upper support structure of the pressing mechanism 301, and its material is typically a high-strength, low-deformation metal alloy to ensure a stable structural shape under pressing force, preventing excessive deformation from affecting the accuracy and stability of the pressing. The second pressure plate 3012 serves as the lower execution component that directly contacts the device under test 5. Its surface undergoes fine polishing and anti-static treatment to reduce friction and electrostatic interference that may occur when in contact with the device under test 5, ensuring the safety and reliability of the device under test 5 during testing. When the lever pressing assembly 3 precisely covers the base 1, the second pressure plate 3012 can achieve tight and deviation-free contact with the upper surface of the device under test 5 placed in the groove 4 of the base 1, laying a solid foundation for subsequent pressing operations.

[0085] The spring-floating assembly 3013, as the core component realizing the elastic buffer function in the pressing mechanism 301, is cleverly positioned between the first pressure plate 3011 and the second pressure plate 3012. Specifically, when the tester operates the lever handle 303 to apply downward pressure to the device under test 5, the spring-floating assembly 3013 will compress moderately, absorbing part of the impact energy of the downward pressure and preventing irreversible damage to the device under test 5 due to excessive instantaneous downward pressure. At the same time, the elastic restoring force of the spring ensures that the pressing mechanism 301 can quickly and smoothly reset after completing the pressing action, preparing for the next test.

[0086] In summary, in this embodiment, the pressing mechanism 301 achieves precise pressing and elastic buffering of the device under test 5 through the coordinated operation of the first pressing plate 3011, the second pressing plate 3012 and the spring floating assembly 3013.

[0087] In a specific and innovative implementation of this embodiment, the spring floating assembly 3013 serves as the core functional module of the pressing mechanism 301 to achieve elastic buffering and precise pressing control. Its internal structure is precise and its functions are clearly defined. It is mainly composed of two core components: several springs and guide columns.

[0088] The guide pillars, as key structural components ensuring the stable relative movement of the first pressure plate 3011 and the second pressure plate 3012, are made of high-strength, low-deformation metal alloy material. Their surfaces undergo fine grinding and plating to enhance wear resistance and corrosion resistance. The guide pillars precisely penetrate the first and second pressure plates 3011 and 3012 in a direction perpendicular to their planes. Their number and layout have been rigorously optimized through mechanical simulation and experiments to ensure uniform stress distribution under downward pressure, preventing structural deformation due to localized stress concentration. During testing, when the lever pressing assembly 3 begins to apply downward pressure to the device under test 5, the guide pillars strictly limit the movement trajectory of the first and second pressure plates 3011 and 3012, ensuring relative displacement only in the vertical direction. This effectively prevents uneven downward pressure caused by lateral offset or swaying, thus guaranteeing the accuracy and stability of the pressing mechanism 301 in applying downward pressure to the device under test 5 in the vertical direction.

[0089] The spring, as the core elastic element in the spring floating assembly 3013 that realizes the elastic buffering function, is selected by comprehensively considering multiple key parameters such as spring stiffness, elastic limit, and fatigue life to ensure that it has good elastic recovery performance and long-term stability while meeting the pressure requirements of the testing device. The springs are precisely installed on the guide posts in a nested manner, with their number and layout corresponding one-to-one with the guide posts, and located within the specific space formed between the first pressure plate 3011 and the second pressure plate 3012. During the test, when the tester operates the lever handle 303 to apply downward pressure to the device under test 5 using the pressing mechanism 301, the springs undergo moderate compression deformation, absorbing and buffering part of the impact energy of the downward pressure. This elastic buffering effect not only effectively reduces the impact force borne by the device under test 5 at the moment of testing, preventing damage to the internal circuitry or structure of the device under test 5 due to sudden changes in downward pressure, but also ensures that after the pressing mechanism 301 completes the pressing action, it can quickly and smoothly return to its initial state with the help of the spring's elastic recovery force, making full preparation for the next test. Meanwhile, the elastic properties of the spring can automatically compensate for uneven downward pressure caused by differences in the height of the tested device 5 or manufacturing tolerances to a certain extent, further improving the adaptability and accuracy of the test.

[0090] In summary, in this embodiment, the spring floating assembly 3013, through the coordinated cooperation of the guide post and the spring, achieves precise guidance and elastic buffering of the relative movement of the first pressure plate 3011 and the second pressure plate 3012 in the pressing mechanism 301.

[0091] In one embodiment of this invention, in addition to the basic functions of pressing down and buffering, the pressing mechanism 301 also innovatively adds a key component, a heat dissipation structure 3014, to address the problem of heat accumulation caused by energy loss during the testing of electronic devices, thereby ensuring the stability of the testing environment and the performance reliability of the device under test 5.

[0092] The heat dissipation structure 3014, as the core module of the pressing mechanism 301 to achieve efficient heat conduction and heat dissipation, is designed by fully integrating thermodynamic principles and mechanical engineering knowledge. This structure is made of a metal alloy material with high thermal conductivity and low thermal resistance (such as copper-aluminum alloy or pure copper), and its surface undergoes precise oxidation treatment and microstructure processing to improve its surface radiation heat dissipation efficiency and contact heat conduction performance. The heat dissipation structure 3014 passes through the first pressure plate 3011 in a through-type layout, and its lower end achieves tight and gapless contact with the upper surface of the second pressure plate 3012 through precise positioning. This through-type design not only ensures the structural stability of the heat dissipation structure 3014 in the vertical direction, but also provides a physical channel for the rapid conduction of heat from the device under test 5 to the external environment.

[0093] During testing, when the second pressure plate 3012 applies precise downward pressure to the device under test (DUT) 5 according to the testing requirements, the DUT 5 generates heat due to internal circuit operation or power loss. At this time, the heat dissipation structure 3014, through its close contact with the second pressure plate 3012, can quickly absorb the heat conducted from the DUT 5 by the second pressure plate 3012, and further conduct the heat to the external heat dissipation environment through its highly thermally conductive body structure. Specifically, the heat conduction path of the heat dissipation structure 3014 can be divided into three stages: First, heat is transferred from the DUT 5 to the second pressure plate 3012 through contact thermal conduction; second, heat is conducted to the interior of the heat dissipation structure 3014 in a more efficient manner through the contact interface between the second pressure plate 3012 and the heat dissipation structure 3014; finally, the heat dissipation structure 3014 dissipates the heat into the surrounding air or further dissipates it through auxiliary heat dissipation devices (such as cooling fans or liquid cooling systems) by combining surface radiation heat dissipation and convection heat dissipation.

[0094] In summary, in this embodiment, the pressing mechanism 301, by adding a heat dissipation structure 3014, achieves active monitoring and efficient heat dissipation of the device under test 5 during the testing process.

[0095] In one embodiment of this invention, the heat dissipation structure 3014 is a heat dissipation fin; the heat dissipation fin, as the core component of the heat dissipation structure 3014, has an overall fin-like structure. This fin-like structure is inspired by fluid mechanics and heat conduction theory, significantly improving heat transfer efficiency by maximizing the heat dissipation surface area within a limited space. Specifically, the geometric shape of the heat dissipation fin is presented as multiple sets of parallel arranged thin plate-like protrusions, with uniform and reasonable spacing between each fin. This avoids airflow obstruction caused by excessively small spacing, and also prevents reduced heat dissipation surface area utilization due to excessively large spacing. Simultaneously, parameters such as the thickness, height, and arrangement density of the heat dissipation fins have been verified through computational fluid dynamics (CFD) simulation and experiments to ensure a stable and efficient heat dissipation flow field can be formed under specific wind speeds or natural convection conditions.

[0096] To further enhance the thermal radiation efficiency of the heat sink fins, a high-emissivity thermal coating is applied to their surface. The core advantage of this high-emissivity coating lies in its ability to significantly increase the emissivity of the heat sink fins in the infrared band, allowing heat to radiate directly into the surrounding space in the form of electromagnetic waves, thus overcoming the limitations of relying solely on convection cooling. Specifically, when the heat sink fins absorb heat from the device under test (DUT) 5, their surface temperature rises and infrared radiation is generated. The high-emissivity coating can transfer this thermal radiation energy to the external environment more efficiently, especially in low-wind-speed or enclosed testing environments, where the effect of thermal radiation cooling is more significant. Furthermore, the thermal coating possesses excellent high-temperature resistance, oxidation resistance, and chemical stability, maintaining the integrity of the coating structure and the stability of its thermal radiation performance under long-term high-temperature testing conditions.

[0097] In one embodiment of this invention, to ensure that the lever pressing test device achieves high-precision, low-deviation pressing action under complex testing conditions, the lever pressing test device innovatively adds a guide pin 7 as a key positioning component. The design of this component integrates precision positioning theory and motion control technology from mechanical engineering. Through its synergistic effect with core components such as the base 1 and the cover 302, it constructs a complete spatial positioning and motion guidance system, thereby effectively ensuring the relative position accuracy and motion trajectory consistency of each component during the testing process.

[0098] The guide pin 7, as the core component for spatial positioning and motion guidance in the lever pressing test device, has undergone rigorous engineering design and experimental verification in terms of material selection, manufacturing process, and dimensional accuracy. Specifically, the guide pin 7 is made of high-strength alloy steel with a low coefficient of thermal expansion, and its surface undergoes precision grinding, hard coating treatment, and microstructure polishing processes to achieve micron-level control of key geometric parameters such as cylindricity, straightness, and surface roughness. This high-precision manufacturing process ensures that the guide pin 7 maintains a stable structural shape and dimensional accuracy when subjected to axial loads and lateral friction forces, avoiding positioning deviations caused by deformation or wear.

[0099] The cover 302, as the core component of the lever pressing assembly 3 supporting the pressing mechanism 301, has a guide hole and guide pin 7 forming a precise sliding pair positioning system. The guide hole is machined using deep hole drilling and precision reaming processes, with its inner diameter matching the outer diameter of the guide pin 7 with a clearance of 0.01mm to 0.02mm. This ensures smooth sliding of the cover 302 during the closing process and eliminates the risk of jamming due to manufacturing tolerances or thermal deformation through the small clearance. The axis of the guide hole completely coincides with the closing trajectory of the cover 302, and the hole wall surface is hardened and covered with a lubricating coating to reduce sliding friction and improve wear resistance. Furthermore, a chamfered structure is provided at the entrance of the guide hole to facilitate rapid insertion of the guide pin 7 during the initial contact stage, reducing impact and positioning errors during alignment.

[0100] When the lever pressing assembly 3 performs the closing action, the guide pin 7, through a sliding fit mechanism penetrating the guide hole, precisely constrains and guides the movement trajectory of the cover 302. Specifically, when the operator pushes the lever handle 303 to move the cover 302 towards the base 1, the guide pin 7 first contacts the chamfered structure at the entrance of the guide hole, and then gradually slides into the guide hole. During this process, the cylindrical surface of the guide pin 7 forms multi-point contact constraints with the hole wall of the guide hole, restricting the degree of freedom of the cover 302 to a single translational movement along the axis of the guide pin 7, thereby completely eliminating positioning deviations caused by lateral offset, tilting, or rotation. At the same time, the fit clearance design between the guide pin 7 and the guide hole fully considers the thermal expansion effect and vibration buffering requirements, ensuring positioning accuracy while avoiding jamming caused by temperature changes or mechanical vibration. When the cover 302 is fully covered by the base 1, the engagement depth between the guide pin 7 and the guide hole reaches the design value. At this time, the pressing mechanism 301 on the cover 302 and the device under test 5 on the base 1 form a precise axial alignment, providing a reliable geometric guarantee for the subsequent pressing test.

[0101] In one embodiment of this invention, the guide pin 7 includes a positioning section and a guide section;

[0102] The positioning section is firmly set on the base 1. Its main function is to precisely cooperate with the guide hole to achieve precise positioning of the cover 302 during the assembly process, ensuring that the relative position between the cover and the base is accurate and providing a reliable reference for subsequent operations.

[0103] The guide section is designed as a conical structure and is tightly connected to the positioning section. The diameter of this conical structure gradually decreases from the end closer to the base 1 to the end farther away from the base 1. This unique structural design allows the guide section to effectively guide the cover 302 as it moves towards the base 1. Even with certain assembly errors or operational deviations, it ensures that the guide hole can smoothly and accurately align with the positioning section, thereby improving assembly efficiency, reducing assembly difficulty, and further ensuring the overall stability and reliability of the device.

[0104] In one specific embodiment of this invention, the mounting block 307 has a mounting hole. A foolproof component 308 is inserted through the mounting hole. This foolproof component 308 consists of a foolproof pin and a foolproof spring. The foolproof spring is tightly fitted onto the foolproof pin, and the two work together to achieve the foolproof function.

[0105] During operation, when the lever handle 303 drives the cam structure 304 to rotate eccentrically, the lever handle 303 will contact the anti-misalignment pin. At this time, the force applied by the lever handle 303 will overcome the elastic restoring force of the anti-misalignment spring, pushing the anti-misalignment pin to a position where it abuts against the latch 305. In this way, the anti-misalignment pin can effectively limit the range of motion of the latch 305, preventing it from accidentally loosening during testing due to external forces or other unexpected factors, thereby ensuring a firm connection between the lever pressing assembly and the base, further improving the stability and reliability of the testing device.

[0106] In one specific embodiment of this invention, the mounting block 307 is further provided with an oil injection hole 309. The design of this oil injection hole 309 has significant functional importance; its main purpose is to provide a channel for the injection of lubricating oil. By injecting lubricating oil into the oil injection hole 309, the lubricating oil can effectively penetrate between the various key moving parts of the lever pressing assembly 3, thereby significantly reducing the friction between the parts during operation.

[0107] This lubrication method not only reduces resistance during operation, improving smoothness and flexibility, but also effectively reduces heat and wear caused by friction, extending the service life of the lever pressing component, while ensuring the device maintains good performance and stability during long-term use. Therefore, the placement of the oil injection hole 309 plays a crucial role in improving the overall operating efficiency and reliability of the testing device.

[0108] In one embodiment of this invention, when the lever handle 303 is rotated from its initial position to its depressed position, the formula for the force applied to the lever handle 303 is as follows:

[0109] F1 = F2 * L2 / L1;

[0110] Where F1 is the force applied to the lever handle 303, and L1 is the distance from the end of the lever handle 303 to the center of the pivot of the cam structure 304 (e.g., ...). Figure 9 (As shown in L1), F2 is the downward pressure applied by the cam structure 304 to the device under test 5, and L2 is the distance from the center of the rotation axis of the cam structure 304 to the protruding part of the cam structure 304 that abuts against the cover 302 (as shown in L1). Figure 9 (as shown in L2).

[0111] This formula is based on the lever principle, specifically the principle of torque balance. In a lever system, the product of force and lever arm is equal on both sides. Therefore, by adjusting the ratio of L1 and L2, a smaller force F1 can be used to apply a larger force F2, thereby effectively pressing down on the device under test 5. This design makes operation more effortless and improves the efficiency and comfort of the testing process.

[0112] Although this application frequently uses terms such as "base" and "spring," the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

[0113] This utility model provides a lever-based pressure testing device that effectively solves many problems associated with manual pressure application in traditional testing devices by employing the lever principle. Firstly, the combination of the lever handle and cam structure allows for stable pressure application to the device under test with minimal operating force, significantly reducing the physical burden on testing personnel, lowering the risk of occupational strain injuries caused by prolonged repetitive force application, and improving work efficiency. Secondly, the matching hook design between the hook and the base provides a stable fixing mechanism, ensuring the device will not loosen during testing and thus guaranteeing the accuracy of the test results. Furthermore, the device has a simple structure, is easy to operate, and possesses high practicality and reliability, effectively improving the quality and efficiency of electrical testing of electronic devices.

[0114] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A lever press test device characterized by, It includes a base (1), a probe module (2), and a lever pressing assembly (3); among which, The base (1) has a groove (4) for placing the device under test (5); The probe module (2) is disposed in the groove (4) and located below the device under test (5), and is used to electrically connect with the device under test (5) to test the device under test (5); The lever pressing component (3) is detachably covered on the base (1) and is used to press down the device under test (5) located in the groove (4) and placed on the probe module (2) using the lever principle, so as to cooperate with the probe module (2) for testing; The lever pressing assembly (3) includes a pressing mechanism (301), a cover (302), a lever handle (303), a cam structure (304), and a hook (305). The cover (302) has an installation cavity (306) on the side facing the base (1); the cover (302) has an installation block (307) on the side away from the base (1). The pressing mechanism (301) is disposed in the mounting cavity (306) and can contact the device under test (5) when the lever pressing assembly (3) is closed on the base (1); The cam structure (304) is rotatably mounted on the mounting block (307). The lever handle (303) is connected to the cam structure (304). By operating the lever handle (303) to rotate from the initial position to the pressing position, the cam structure (304) can be driven to rotate eccentrically, thereby pressing down the cover (302) and the pressing mechanism (301) so that the pressing mechanism (301) applies downward pressure to the device under test (5). The hook (305) is disposed on the cover (302) and is used to fit and engage with the buckle (6) on the base (1) when the lever pressing assembly (3) is covered on the base (1) so as to firmly fix the lever pressing assembly (3) on the base (1).

2. The lever press test device of claim 1, wherein, The pressing mechanism (301) includes a first pressure plate (3011), a second pressure plate (3012), and a spring floating assembly (3013). The first pressure plate (3011) and the second pressure plate (3012) are arranged sequentially from top to bottom in the mounting cavity (306); the second pressure plate (3012) can contact the device under test (5) when the lever pressing assembly (3) is closed on the base (1); The spring floating assembly (3013) is disposed between the first pressure plate (3011) and the second pressure plate (3012), and can provide elastic buffer when the pressing mechanism (301) applies downward pressure to the device under test (5).

3. The lever press test device of claim 2, wherein, The spring floating assembly (3013) includes a plurality of springs and guide posts; The guide post passes through the first pressure plate (3011) and the second pressure plate (3012) to ensure that the relative movement of the first pressure plate (3011) and the second pressure plate (3012) in the vertical direction is smooth; The spring is sleeved on the guide post and located between the first pressure plate (3011) and the second pressure plate (3012) to provide elastic cushioning.

4. The lever press test device of claim 2, wherein, The pressing mechanism (301) also includes a heat dissipation structure (3014). The heat dissipation structure (3014) passes through the first pressure plate (3011) and contacts the second pressure plate (3012). It is used to conduct and dissipate the heat generated by the device under test (5) during the test when the second pressure plate (3012) applies downward pressure to the device under test (5).

5. The lever press test device of claim 4, wherein, The heat dissipation structure (3014) is a heat dissipation fin; The heat dissipation fins have a fin-like structure and their surface is coated with a heat dissipation coating with high emissivity.

6. The lever compression testing device according to claim 1, characterized in that, It also includes guide pins (7); The guide pin (7) is disposed on the base (1); The cover (302) is provided with a guide hole that matches the guide pin (7); The guide pin (7) passes through the guide hole and is used to guide the cover (302) to be accurately aligned with the base (1) in a predetermined direction when the lever pressing assembly (3) is closed on the base (1).

7. The lever compression testing device according to claim 6, characterized in that, The guide pin (7) includes a positioning section and a guide section; The positioning section is disposed on the base (1) and is used to cooperate with the guide hole to achieve precise positioning of the cover (302); The guide section is a conical structure and is connected to the positioning section; the diameter of the guide section gradually decreases from near the base (1) to away from the base (1), and is used to guide the guide hole to smoothly connect with the positioning section when the cover (302) is close to the base (1).

8. The lever compression testing device according to claim 1, characterized in that, The mounting block (307) has mounting holes; A foolproof component (308) is inserted into the mounting hole; The foolproof component (308) includes a foolproof pin and a foolproof spring; The anti-fool spring is sleeved on the anti-fool pin; When the lever handle (303) is operated to drive the cam structure (304) to rotate eccentrically, the lever handle (303) contacts the anti-fool pin and overcomes the elastic restoring force of the anti-fool spring to push the anti-fool pin to abut against the hook (305) to prevent the hook (305) from accidentally coming loose.

9. The lever compression testing device according to claim 8, characterized in that, The mounting block (307) is also provided with an oil injection hole (309); The oil injection hole (309) is used to inject lubricating oil to reduce the friction of the lever pressing assembly (3) during operation.

10. The lever compression testing device according to claim 1, characterized in that, When the lever handle (303) is rotated from the initial position to the pressed position, the formula for the force applied to the lever handle (303) is: F1 = (F2 * L2) / L1; Wherein, F1 is the force applied to the lever handle (303), L1 is the distance from the end of the lever handle (303) to the center of the pivot of the cam structure (304), F2 is the downward pressure applied by the cam structure (304) to the device under test (5), and L2 is the distance from the center of the pivot of the cam structure (304) to the protruding part of the cam structure (304) that abuts against the cover (302).

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