SOP small-profile pin packaging test seat with rapid fixing structure

Abstract

The invention discloses an SOP small-shape pin packaging test seat with a rapid fixing structure, and belongs to the technical field of semiconductor packaging test equipment, the SOP small-shape pin packaging test seat comprises a test seat and a rapid fixing structure, the top of the test seat is provided with a placement groove, and two sides of the placement groove are provided with a plurality of pin grooves; the rapid fixing structures are symmetrically arranged on the two sides of the testing seat and comprise rotating shafts, the rotating shafts penetrate through the testing seat, the surfaces of the rotating shafts are vertically connected with pressing pieces right opposite to the pin grooves, the testing seat is provided with fan-shaped rotating grooves matched with the pressing pieces, the outer surfaces of the rotating shafts are further provided with clamping protrusions, and the testing seat is correspondingly provided with annular grooves. A locking space matched with the clamping protrusion is arranged at one end of the annular groove, a torsional spring is arranged on a fixing sleeve of the rotating shaft, the torsional spring can be changed back and forth between a free state and a rotating state through rotation of the rotating shaft, then the SOP pin can be rapidly fixed by rotating the rotating shaft, and the fixing stability can be ensured through the self-locking effect.

Description

Technical Field

[0001] The invention relates to the technical field of semiconductor packaging and testing equipment, and in particular to a SOP small-profile pin packaging test socket with a quick fixing structure. Background Art

[0002] SOP (Small Outline Package9) is a surface mount package with gull-wing (L-shaped) leads extending from both sides of the package. SOP is the most popular surface mount package, with a typical pin center distance of 1.27mm (50mil), and others of 0.65mm and 0.5mm. The number of pins is mostly 8-32.

[0003] The patent with announcement number CN217112615U discloses an integrated circuit packaging and testing device, which is a previous generation packaging and testing fixing structure. It mainly fixes the corresponding pins of the integrated circuit by squeezing the pressure plate and the conductive sheet, and does not require an additional limiting mechanism. Although the structure is relatively simple, there are still some problems, such as a large number of external devices (T-type plates and pressure plates), which occupy a large space, and secondly, the fixing stability of the pins is poor. Summary of the invention

[0004] The embodiment of the present application provides a SOP small outline pin package test socket with a quick fixing structure, which is not only more compact in structure and occupies less space, but also can realize quick fixation of SOP pins and can effectively ensure the clamping stability through the self-locking design.

[0005] The embodiment of the present application provides a SOP small outline pin package test socket with a quick fixing structure, comprising a test socket and a quick fixing structure, wherein the test socket has a first end and a second end opposite to each other along a length direction, a placement groove is arranged on the top of the test socket, and a plurality of pin grooves are symmetrically arranged on both sides of the placement groove;

[0006] The quick fixing structure is symmetrically arranged on both sides of the test seat, including a rotating shaft, the rotating shaft extends through the test seat along the length direction of the test seat, the surface of the rotating shaft is vertically connected with a clamping piece at a position opposite to the pin groove, the test seat is provided with a fan-shaped rotating groove matched with the clamping piece, the outer surface of the rotating shaft is provided with a clamping protrusion near the second end, the test seat is provided with an annular groove matched with the clamping protrusion, one end of the annular groove is provided with a locking space matched with the clamping protrusion, the surface of the rotating shaft is fixedly sleeved with a torsion spring between two adjacent pin grooves, the torsion spring has a free state and a rotation state, the test seat is provided with a torsion space for the torsion spring to be twisted, and the torsion spring is switched back and forth between the free state and the rotation state by the rotation of the rotating shaft;

[0007] When the torsion spring is in a free state, the torsion spring forces the pressing member to be located in the test seat by limiting the rotating shaft, and the locking protrusion is located at an end of the annular groove away from the locking space;

[0008] By rotating the rotating shaft in the positive direction, the torsion spring is gradually converted to a rotating state until the clamping member presses the SOP pin in the pin groove, and the latch moves along the annular groove and is self-locked in the locking space; by rotating the rotating shaft in the reverse direction, the latch overcomes the locking force of the locking space and disengages from the locking space, and under the action of the torsion spring, the rotating shaft is automatically reset to convert the torsion spring to a free state.

[0009] In a possible implementation, the quick fixing structure also includes a quick pressure nut, which is threadedly mounted on the rotating shaft at the first end, and the quick pressure nut is partially located in the test seat, and a guide protrusion is symmetrically provided on the outer surface of the part located in the test seat, and a limiting groove matching the guide protrusion is provided in the test seat along the length direction, so that the quick pressure nut can be moved in a directional manner along the length direction, and based on the threaded matching relationship and the matching relationship between the clamping protrusion and the annular groove, the rotating shaft can be rotated in a directional manner, wherein the two end positions of the limiting groove respectively match the two end positions of the annular groove, and match the positions of the torsion spring in the free state and the rotation state.

[0010] In a possible implementation, the quick-pressing nuts in the quick-fixing structures on both sides are vertically connected with linkage rods, and guide grooves cooperating with the linkage rods are provided in the test seat along the length direction.

[0011] In a possible implementation, the rotating shaft includes a rotating section and a quick-change section, the rotating section and the quick-press nut are threadedly matched, the quick-change section is threadedly sleeved on the other end of the rotating section, and the threads at both ends of the rotating section rotate in opposite directions, the cam is arranged on the surface of the quick-change section, and the quick-change section is installed on the second end of the test seat through a bearing, and the test seat is provided with a moving channel connecting the annular groove to the second end for the movement of the cam.

[0012] In a possible implementation, the SOP small outline pin package test socket with a quick fixing structure also includes a limit seat, a top of the limit seat is provided with a U-shaped groove for limiting the test socket, and the first end is close to the opening of the U-shaped groove.

[0013] In one possible implementation, a semiconductor cooling plate is installed at the bottom of the placement slot, and the test seat and the limit seat are provided with a heat conduction channel connected up and down opposite to the semiconductor cooling plate, and a cooling fan is installed at the bottom of the limit seat to dissipate the heat in the heat conduction channel.

[0014] In one possible implementation, a locking slope structure is provided between the annular groove and the locking space, and an inclination angle of the locking slope structure relative to the bottom of the annular groove is smaller than an inclination angle of the locking slope structure relative to the bottom of the locking space, so that the locking protrusion can form self-locking when it moves to the locking space.

[0015] In a possible implementation, the clamping member includes a clamping rod and a clamping plate, the clamping rod is vertically connected to the rotating shaft, the clamping plate is located on the inner side of the clamping rod and is connected to the clamping rod through an adapter plate, and the plane where the bottom of the clamping plate is located and the plane where the bottom of the clamping rod is located have a predetermined angle, so that when the clamping plate horizontally clamps the SOP pin in the pin slot, the clamping rod tilts obliquely upward.

[0016] In a possible implementation, the SOP small outline pin package test seat with a quick fixing structure also includes a spare fixing structure, the spare fixing structure includes a spare pressure rod symmetrically arranged just above one or more of the fan-shaped rotation grooves on both sides of the test seat, a locking block is arranged at the lower part of the spare pressure rod, the test seat is provided with a spare channel connected to the fan-shaped rotation groove in the height direction, the spare pressure rod cooperates with the spare channel to press down the clamping rod, the side wall of the spare channel is provided with a spare guide groove cooperating with the locking block, and the lower part of the spare guide groove is provided with a second locking space perpendicular to the spare channel at a predetermined position, so that when the locking block rotates and moves into the second locking space through the spare guide groove, the clamping plate just presses the surface of the SOP pin in the pin groove;

[0017] A pressure sensor is installed on the bottom surface of the clamping plate, and an alarm signal light connected to the pressure sensor by an electrical signal is installed on the test seat.

[0018] In one possible implementation, a pressing cap is provided at the top end of the spare pressure rod, and the pressing cap protrudes circumferentially from the spare pressure rod. A spring is sleeved on the spare pressure rod, and both ends of the spring abut between the pressing cap and the top of the test seat. A protective cover is also provided on the top of the test seat to protect the spare fixed structure.

[0019] Beneficial effects: Compared with the prior art, the SOP small-profile pin package test seat with a quick fixing structure provided by the present application only needs to rotate the rotating shaft so that the clamping protrusion moves along the annular groove to the locking space, and the SOP pin in the pin groove can be quickly clamped by the clamping piece. The structure is more compact and occupies less space. At the same time, the clamping protrusion cooperates with the locking space to form a self-locking function, so that the clamping piece can stably maintain a state of clamping the SOP pin, and the clamping stability is good, which can ensure the quality of the package test. In addition, it only needs to rotate the rotating shaft in the opposite direction to reset, which is simple to operate. Thirdly, when the clamping piece is located in the test seat, the torsion spring remains in a free state, which can prevent the torsion spring from being in a twisted state at all times when not working, thereby effectively extending the service life of the torsion spring.

[0020] The quick-pressing nut and the rotating shaft can be matched by the threaded combination to directly press the quick-pressing nut to realize the quick fixation of the SOP pin by the clamping member, which makes the operation simpler. At the same time, the two end positions of the limit groove respectively match the two end positions of the annular groove, and match the positions of the torsion spring in the free state and the rotating state. The quick-pressing nut can be directly pressed to the bottom to realize the quick fixation of the SOP pin, which can play a fool-proof role. The annular groove and the limit groove can also reversely limit the torsion spring to avoid excessive rotation of the torsion spring and affect the service life of the torsion spring.

[0021] By configuring the rotating shaft to be a split-type connected rotating section and a quick-change section, the quick-change section can be flexibly replaced when the degree of wear of the cam is large and the accuracy is reduced, thereby realizing rapid maintenance of the test seat and reducing maintenance costs;

[0022] The backup fixing structure can be used to perform a secondary clamping operation when the clamping plate fails to clamp, so as to ensure the packaging test efficiency and quality of the SOP pins. It can also monitor the accuracy of the card convexity to remind timely replacement of the quick-change segment.

[0023] These and other objects, features and advantages of the present invention will be fully reflected in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The exploded structure schematic diagram of the SOP small outline pin package test socket with a quick fixing structure of the present application is shown.

[0025] Figure 2 A partial cross-sectional structural schematic diagram of the test socket in the present application is shown.

[0026] Figure 3 Shows this application Figure 2 The enlarged structural diagram of part A in the figure, where the dotted line part is a schematic diagram of the state when the clamping plate clamps the SOP pin.

[0027] Figure 4A cross-sectional structural schematic diagram of the cooperation between the rotating shaft and the sealing seat in the present application is shown.

[0028] Figure 5 A schematic cross-sectional structure diagram of the matching of the latching protrusion and the annular groove in the present application is shown.

[0029] Figure 6 A schematic diagram of the structure of the test socket at the spare channel in the present application is shown. DETAILED DESCRIPTION

[0030] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0031] Those skilled in the art should understand that, in the disclosure of the specification, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0032] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0033] refer to Figures 1 to 5 , the embodiment of the present application provides a SOP small outline pin package test socket with a quick fixing structure, including a test socket 10 and a quick fixing structure, wherein the test socket 10 has a first end 11 and a second end 12 opposite to each other along the length direction, and a placement groove 101 is provided on the top of the test socket 10, and a plurality of pin grooves 102 are symmetrically provided on both sides of the placement groove 101 for placing SOP pins, such as 14 pins or 16 pins;

[0034] The quick fixing structure is symmetrically arranged on both sides of the test seat 10, including a rotating shaft 20, wherein the rotating shaft 20 extends through the test seat 10 along the length direction of the test seat 10, and at the same time, the surface of the rotating shaft 20 is vertically connected with a clamping member at a position directly opposite to the pin groove 102, wherein the clamping member includes a clamping rod 21 and a clamping plate 22 connected to the outer end of the clamping rod 21. Correspondingly, the test seat 10 is provided with a fan-shaped rotating groove 103 that cooperates with the clamping rod 21 and the clamping plate 22, so that when the rotating shaft 20 rotates, the clamping rod 21 and the clamping plate 22 are engaged with each other. The clamping plate 22 can swing in a directional manner with the rotating shaft 20 as the axis in the fan-shaped rotating groove 103. In addition, a latching protrusion 23 is provided on the outer surface of the rotating shaft 20 near the second end 12. Correspondingly, an annular groove 104 matching with the latching protrusion 23 is provided in the test seat 10, and a locking space 105 matching with the latching protrusion 23 is provided at one end of the annular groove 104, so that when the rotating shaft 20 rotates, the latching protrusion 23 rotates synchronously, and then when it moves along the annular groove 104 to the locking space 105, the latching protrusion 23 can be automatically locked to prevent the latching protrusion 23 from moving. A torsion spring is fixedly sleeved on the surface of the rotating shaft 20 between two adjacent pin grooves 102, and the torsion spring has a free state and a rotation state. The test seat 10 is provided with a torsion space for the torsion spring to be twisted, and the torsion spring is switched back and forth between the free state and the rotation state by the rotation of the rotating shaft 20. To ensure the structural strength of the test seat 10, the torsion spring and the torsion space are both located on the side of the rotating shaft 20 away from the pin groove 102. In addition, the torsion spring can also be arranged on the unused part of the rotating shaft 20 to extend the torsional stability and service life of the rotating shaft 20;

[0035] When the torsion spring is in a free state, the torsion spring forces the clamping rod 21 and the clamping plate 22 to be located in the test socket 10 by limiting the rotating shaft 20, and the clamping protrusion 23 is located at one end of the annular groove 104 away from the locking space 105, so that the SOP pin to be tested can be placed normally in place. In addition, when the test socket 10 is not working, the torsion spring is in a free state, there is no torsion, and therefore there is no fatigue damage, which can greatly extend the service life of the torsion spring;

[0036] The rotating shaft 20 is rotated in the positive direction so that the torsion spring is gradually converted to a rotating state (gradually generating elastic potential energy) until the clamping plate 22 horizontally clamps the SOP pin in the pin groove 102, and at the same time, the clamping protrusion 23 gradually moves along the annular groove 104 until it is self-locked in the locking space 105, so that the stability of the clamping plate 22 clamping the SOP pin can be ensured by the self-locking formed by the clamping protrusion 23 and the locking space 105, thereby ensuring the test quality;

[0037] By rotating the rotating shaft 20 in the opposite direction, the locking protrusion 23 overcomes the locking force of the locking space 105 and disengages from the locking space 105, and under the action of the torsion spring, the rotating shaft 20 automatically resets and the torsion spring is converted to a free state. At this time, the tested SOP pin can be taken out and a new SOP pin to be tested can be inserted.

[0038] Therefore, the SOP small outline pin package test socket with a quick fixing structure provided in the present application only needs to rotate the rotating shaft 20 to realize the quick clamping and fixing of the SOP pin by the clamping plate 22. At the same time, based on the locking relationship between the clamping protrusion 23 and the locking space 105, it can ensure the stability of the clamping plate 22 clamping the SOP pin, thereby ensuring the packaging test quality. The overall structure is compact and occupies a small space. The hardness of the clamping protrusion 23 is moderate and has a certain amount of compression deformation. It is not too hard to be unable to rotate into the locking space 105, nor is it too soft to easily detach from the locking space 105. A rubber material with moderate softness can be selected.

[0039] In one embodiment, the quick fixing structure also includes a quick press nut 24. The quick press nut 24 is sleeved on the rotating shaft 20 in a threaded manner at the first end 11, and the quick press nut 24 is partially located in the test seat 10, and a guide protrusion 241 is symmetrically provided on the outer surface of the part located in the test seat 10. Correspondingly, a limit groove 106 matching the guide protrusion 241 is provided in the test seat 10 along the length direction, so that the quick press nut 24 can be directional moved along the length direction, and based on the threaded matching relationship and the matching relationship between the clamping protrusion 23 and the annular groove 104, the rotating shaft 20 can be directional rotated, that is, when the quick press nut 24 is pressed externally, based on the threaded matching relationship and the matching relationship between the clamping protrusion 23 and the annular groove 104, the rotating shaft 20 will be directional rotated, thereby realizing the rapid fixation of the SOP pin, and the operation is very convenient. In addition, the two end positions of the limiting groove 106 are respectively matched with the two end positions of the annular groove 104, and are matched with the positions of the torsion spring in the free state and the rotation state, that is, when the guide protrusion 241 is located at the outermost end of the limiting groove 106, the torsion spring is in a free state, and the clamping protrusion 23 is located at the end away from the locking space 105, and when the guide protrusion 241 is located at the innermost end of the limiting groove 106, the torsion spring is in a rotation state, that is, the state when the clamping plate 22 clamps the SOP pin, and the clamping protrusion 23 is located in the locking space 105 to form self-locking, thereby the two states of the torsion spring can be limited by the limiting groove 106 and the annular groove 104, so that the quick-pressing nut 24 can be directly pressed to the bottom to complete the quick fixation of the SOP pin and form self-locking, the fixing stability is good, and it has an anti-fool effect, and the operation is simple, wherein the rotating shaft 20 can be rotated in the opposite direction of the second end 12 to unlock the self-locking state of the clamping protrusion 23.

[0040] During the specific operation process, the quick-pressing nuts 24 on both sides can be pressed separately to achieve separate fixation of the SOP pins on both sides, but this is prone to cause the tilting phenomenon of the rear fixed pins, which is easy to affect the clamping efficiency and the clamping quality. In addition, they can also be pressed simultaneously to achieve simultaneous fixation of the SOP pins on both sides, which may require two hands to operate simultaneously. Therefore, preferably, the quick-pressing nuts 24 in the quick fixing structure on both sides are vertically connected with a linkage rod 25, and at the same time, a guide groove 107 matching the linkage rod 25 is provided in the test seat 10 along the length direction. Therefore, there is no need to focus on the pressing speed and pressing timing of each quick-pressing nut 24, and one hand can complete the simultaneous fixation of the SOP pins on both sides without causing the problem of tilting of the SOP pins on any side, thereby ensuring the efficiency and quality of the clamping plate 22 clamping the SOP pins.

[0041] Considering that the self-locking effect formed by the combination of the clamping protrusion 23 and the locking space 105 has a great influence on the fast and firm clamping of the SOP pin by the clamping plate 22, during frequent operation, the clamping protrusion 23 may have the problem of wear and affect the self-locking effect. Therefore, the rotating shaft 20 includes a rotating section 211 and a quick-change section 212, wherein the rotating section 211 and the quick-pressing nut 24 are threadedly matched, and at the same time, the quick-change section 212 is sleeved on the other end of the rotating section 211 in a threaded matching manner, and the threads at both ends of the rotating section 211 rotate in opposite directions, so that when the quick-pressing nut 24 is pressed to drive the rotating section 211 to rotate, the quick-change section 212 will not rotate, but will make the thread matching relationship between the rotating section 211 and the quick-change section 212 more secure. Generally, before use, the rotating section 211 and the quick-change section 212 are already firmly connected, and even if there is a relatively light reverse rotation force, it will not affect the connection state between the two. The locking protrusion 23 is arranged on the surface of the quick-change section 212, and the quick-change section 212 is installed on the second end 12 of the test seat 10 through the bearing 213, and the test seat 10 is provided with a moving channel 108 connecting the annular groove 104 to the second end 12 for the movement of the locking protrusion 23. Therefore, when the shape accuracy of the locking protrusion 23 is reduced, a new quick-change section 212 with the locking protrusion 23 can be flexibly replaced, which is convenient for maintenance and low in cost.

[0042] In one embodiment, the SOP small outline pin package test socket with a quick fixing structure also includes a limit seat 30, wherein the top of the limit seat 30 is provided with a U-shaped groove 301 for limiting the test socket 10, and the first end 11 is close to the opening of the U-shaped groove 301, so that when the quick pressing nut 24 is pressed, the test socket 10 can be limited by the limit seat 30, thereby preventing the test socket 10 from moving, so as to achieve rapid fixation of the SOP pin by the clamping plate 22.

[0043] Further preferably, a semiconductor cooling sheet 13 is installed at the bottom of the placement slot 101, and at the same time, the test seat 10 and the limit seat 30 are provided with a heat conduction channel 302 connected up and down at the position directly opposite to the semiconductor cooling sheet 13, and a heat dissipation fan for dissipating the heat in the heat conduction channel 302 is installed at the bottom of the limit seat 30. The high temperature caused by the SOP pin test can be absorbed by the semiconductor cooling sheet 13, and the absorbed high temperature is released into the heat conduction channel 302, and finally dissipated to the outside through the heat dissipation fan, so as to provide a good temperature environment for the SOP pin packaging test, wherein the heat conduction channel 203 can be used as a buffer between the semiconductor cooling sheet 13 and the heat dissipation fan to prevent the high temperature from directly acting on the heat dissipation fan. In addition, the heat conduction channel 203 can also store a certain amount of high temperature, which can further improve the heat dissipation effect.

[0044] In one embodiment, a locking ramp structure 14 is provided between the annular groove 104 and the locking space 105 . The inclination angle of the locking slope structure 14 relative to the bottom of the annular groove 104 is smaller than the inclination angle of the locking slope structure 14 relative to the bottom of the locking space 105, so that the locking protrusion 23 can form self-locking when it moves to the locking space 105. That is to say, the locking protrusion 23 is more likely to pass through the annular groove 104 to cross the locking slope structure 14 and enter the locking space 105, but the locking protrusion 23 is not easy to cross the locking slope structure 14 from the locking space 105 to the annular groove 104. In the process of crossing the locking slope structure 14, it is compressed by the locking slope structure 14 and produces a slight deformation, and automatically elastically resets after entering the necking space 105, thereby forming self-locking and forcing the locking protrusion 23 to stay stably in the locking space, that is, the clamping plate 22 can firmly and stably clamp the SOP pin, unless an external force rotates the rotating shaft 20 in the opposite direction to unlock the locking force, that is, the end of the rotating shaft 20 close to the second end 12 is rotated in the opposite direction.

[0045] In one embodiment, the clamping plate 22 is located on the inner side of the clamping rod 21 and is connected to the clamping rod 21 through an adapter plate 26. At the same time, the plane where the bottom of the clamping plate 22 is located and the plane where the bottom of the clamping rod 21 is located have a predetermined angle, so that when the clamping plate 22 horizontally clamps the SOP pin in the pin slot 102, the clamping rod 21 is tilted upward. In this way, the clamping rod 21 can be prevented from touching the bottom of the pin slot 102 during the rotation process to affect the clamping effect of the clamping plate 22 on the SOP pin. On the other hand, the height difference brought by the adapter plate 26 can also reduce the torsional deformation of the torsion spring to a certain extent, and can also extend the service life of the torsion spring while ensuring that the clamping plate 22 clamps the SOP pin.

[0046] Since there are some vulnerable parts in the package test seat, it is difficult to quickly detect when there is a problem with the clamping quality, and then there is a problem of package test misalignment. Therefore, in one embodiment, the SOP small-profile pin package test seat with a quick fixing structure also includes a spare fixing structure. The spare fixing structure includes a spare pressure rod 41 symmetrically arranged on both sides of the test seat 10, just above one or more of the fan-shaped rotating grooves 103, that is, a spare pressure rod 41 can be symmetrically arranged on both sides of the test seat 10, or multiple spare pressure rods 41 can be symmetrically arranged, and both can achieve the effect of pressing down the clamping rod 21. Any rotational movement of the clamping rod 21 will drive the rotating shaft 20 to rotate, and then finally realize the clamping of the SOP pin by the clamping plate 22. Specifically, the lower part of the spare pressure rod 41 is provided with a locking block 42. The test seat 10 is provided with a spare channel 109 connected to the fan-shaped rotating groove 103 in the height direction, wherein the spare channel 109 cooperates with the spare pressing rod 41 and faces the pressing rod 21, and is used to press the pressing rod 21 downward through the spare pressing rod 41. Figure 6 , the side wall of the spare channel 109 is provided with a spare guide groove 401 matched with the locking block 42, and at the same time, the lower part of the spare guide groove 401 is provided with a second locking space 402 perpendicular to the spare channel 109 at a predetermined position, so that when the locking block 42 rotates and moves into the second locking space 402 through the spare guide groove 401, the clamping plate 22 just presses the surface of the SOP pin in the pin groove 102, that is, manually press down the spare pressure rod 41, and when it cannot be pressed down, directly rotate the spare pressure rod 41 to move the locking block 42 to the second locking space 402, and then firmly and firmly clamp the SOP pin through the clamping plate 22;

[0047] Correspondingly, a pressure sensor is installed on the bottom surface of the clamping plate 22 for generating an induction signal when the SOP pin is clamped. At the same time, an alarm signal light 15 whose electrical signal is connected to the pressure sensor is installed on the test socket 10. Therefore, the clamping effect of the clamping plate 22 can be monitored by the cooperation of the pressure sensor and the alarm signal light 15, so that when the clamping plate 22 cannot be pressed down into place, the SOP pin can be clamped by the spare pressure rod 41, thereby ensuring the quality and efficiency of the packaging test. In this case, it is likely that the self-locking failure is caused by the wear of the clamping protrusion 23. The shape accuracy of the clamping protrusion 23 can be checked to determine whether a new quick-change section 212 needs to be replaced.

[0048] Further preferably, a pressing cap 43 is provided at the top of the standby pressure rod 41. The pressing cap 43 protrudes from the standby pressure rod 41 in the circumferential direction, and a spring 44 is sleeved on the standby pressure rod 41, wherein both ends of the spring 44 abut between the pressing cap 43 and the top of the test seat 10, so that when the standby pressure rod 41 is not needed, the standby pressure rod 41 will not protrude into the fan-shaped rotating groove 103 and affect the operation of the clamping rod 21. At the same time, after the test is completed, the locking block 42 is moved into the standby guide groove 401, and the standby pressure rod 41 can also quickly and automatically float up under the rebound action of the spring 44. A protective cover 16 is also provided on the top of the test seat 10 to protect the standby fixing structure and avoid accidentally pressing the standby pressure rod 41. When the standby fixing structure needs to be used, the protective cover only needs to be removed and the pressing cap 43 can be directly pressed.

[0049] Generally speaking, spare fixed structures are only used as backup and are used less frequently.

[0050] It should be noted that the terms "first, second" in the present application are only used for descriptive purposes and do not indicate any order. They cannot be understood as indicating or implying relative importance. These terms can be interpreted as names.

[0051] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A SOP small outline pin package test socket with a quick fixing structure, characterized in that: It comprises a test seat and a quick fixing structure, wherein the test seat has a first end and a second end opposite to each other along the length direction, a placement groove is arranged on the top of the test seat, and a plurality of pin grooves are symmetrically arranged on both sides of the placement groove; The quick fixing structure is symmetrically arranged on both sides of the test seat, including a rotating shaft, the rotating shaft extends through the test seat along the length direction of the test seat, the surface of the rotating shaft is vertically connected with a clamping piece at a position opposite to the pin groove, the test seat is provided with a fan-shaped rotating groove matched with the clamping piece, the outer surface of the rotating shaft is provided with a clamping protrusion near the second end, the test seat is provided with an annular groove matched with the clamping protrusion, one end of the annular groove is provided with a locking space matched with the clamping protrusion, the surface of the rotating shaft is fixedly sleeved with a torsion spring between two adjacent pin grooves, the torsion spring has a free state and a rotation state, the test seat is provided with a torsion space for the torsion spring to be twisted, and the torsion spring is switched back and forth between the free state and the rotation state by the rotation of the rotating shaft; When the torsion spring is in a free state, the torsion spring forces the pressing member to be located in the test seat by limiting the rotating shaft, and the locking protrusion is located at an end of the annular groove away from the locking space; By rotating the rotating shaft in the positive direction, the torsion spring is gradually converted to a rotating state until the clamping member presses the SOP pin in the pin groove, and the latch moves along the annular groove and is self-locked in the locking space; by rotating the rotating shaft in the reverse direction, the latch overcomes the locking force of the locking space and disengages from the locking space, and under the action of the torsion spring, the rotating shaft is automatically reset to convert the torsion spring to a free state.

2. The SOP small outline pin package test socket with a quick fixing structure as claimed in claim 1, characterized in that: The quick fixing structure also includes a quick-pressing nut, which is sleeved on the rotating shaft in a threaded manner at the first end, the quick-pressing nut is partially located in the test seat, and the part located in the test seat is symmetrically provided with guide protrusions on the outer surface, and a limiting groove matched with the guide protrusion is provided in the test seat along the length direction, so that the quick-pressing nut can be directed along the length direction, and based on the threaded matching relationship and the matching relationship between the clamping protrusion and the annular groove, the rotating shaft can be directed to rotate, wherein the two end positions of the limiting groove respectively match the two end positions of the annular groove, and match the positions of the torsion spring in the free state and the rotation state.

3. The SOP small outline pin package test socket with a quick fixing structure as claimed in claim 2, characterized in that: The quick-pressing nuts in the quick-fixing structures on both sides are vertically connected with linkage rods, and guide grooves matching with the linkage rods are arranged in the test seat along the length direction.

4. The SOP small outline pin package test socket with a quick fixing structure as claimed in claim 2, characterized in that: The rotating shaft includes a rotating section and a quick-change section, the rotating section and the quick-press nut are threadedly matched, the quick-change section is sleeved on the other end of the rotating section in a threaded matching manner, and the threads at both ends of the rotating section rotate in opposite directions, the clamping cam is arranged on the surface of the quick-change section, and the quick-change section is installed on the second end of the test seat through a bearing, and the test seat is provided with a moving channel connecting the annular groove to the second end for the movement of the clamping cam.

5. The SOP small outline pin package test socket with a quick fixing structure as claimed in claim 2, characterized in that: It also includes a limiting seat, the top of which is provided with a U-shaped groove for limiting the test seat, and the first end is close to the opening of the U-shaped groove.

6. The SOP small outline pin package test socket with a quick fixing structure as claimed in claim 5, characterized in that: A semiconductor cooling plate is installed at the bottom of the placement groove, and the test seat and the limit seat are provided with a heat conduction channel connected up and down opposite to the semiconductor cooling plate. A cooling fan for dissipating heat in the heat conduction channel is installed at the bottom of the limit seat.

7. The SOP small outline pin package test socket with a quick fixing structure as claimed in claim 1, characterized in that: A locking slope structure is arranged between the annular groove and the locking space, and the inclination angle of the locking slope structure relative to the bottom of the annular groove is smaller than the inclination angle of the locking slope structure relative to the bottom of the locking space, so that the locking protrusion can form self-locking when it moves to the locking space.

8. The SOP small outline pin package test socket with a quick fixing structure as claimed in claim 1, characterized in that: The clamping member includes a clamping rod and a clamping plate, the clamping rod is vertically connected to the rotating shaft, the clamping plate is located on the inner side of the clamping rod and is connected to the clamping rod through an adapter plate, and the plane where the bottom of the clamping plate is located and the plane where the bottom of the clamping rod is located have a predetermined angle, so that when the clamping plate horizontally clamps the SOP pin in the pin slot, the clamping rod tilts obliquely upward.

9. The SOP small outline pin package test socket with a quick fixing structure as claimed in claim 8, characterized in that: It also includes a spare fixing structure, which includes a spare pressure rod symmetrically arranged on both sides of the test seat, one or more spare pressure rods just above the fan-shaped rotation grooves, a locking block is arranged at the lower part of the spare pressure rod, and the test seat is provided with a spare channel connected to the fan-shaped rotation groove in the height direction, the spare pressure rod cooperates with the spare channel and is used to press down the clamping rod, the side wall of the spare channel is provided with a spare guide groove that cooperates with the locking block, and the lower part of the spare guide groove is provided with a second locking space perpendicular to the spare channel at a predetermined position, so that when the locking block rotates and moves into the second locking space through the spare guide groove, the clamping plate just presses the surface of the SOP pin in the pin groove; A pressure sensor is installed on the bottom surface of the clamping plate, and an alarm signal light connected to the pressure sensor by an electrical signal is installed on the test seat.

10. The SOP small outline pin package test socket with a quick fixing structure as claimed in claim 9, characterized in that: A pressing cap is provided at the top end of the spare pressure rod, and the pressing cap protrudes circumferentially from the spare pressure rod. A spring is sleeved on the spare pressure rod, and both ends of the spring abut between the pressing cap and the top of the test seat. A protective cover is also provided on the top of the test seat to protect the spare fixing structure.

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