A power supply test device

Abstract

The invention discloses a power supply test device, which belongs to the field of temperature measurement technology, and comprises: a test bench, a temperature measurement component and a moving component. The test bench is used for placing a power supply board to be tested, and the temperature measurement component comprises a thermocouple for testing the contact thermal resistance of the power supply board, and the thermocouple comprises a wire barrel and a test head. The power supply test device enables three groups of test heads to be used in turn. After one group of test heads is used up, it can be put away for cooling, and another group of test heads can be replaced for use, thereby greatly improving the working efficiency of temperature measurement. When air enters the heat dissipation slot, the test head will be cooled. After the test head is cooled, the air can be discharged through the air outlet, so that the test head can be quickly cooled after use. When the test head rotates, it can drive the guide slot to slide to the side of the guide frame. At this time, the guide slot can squeeze the supporting spring sheet, so that the test head can be tightly connected with the connector when measuring temperature.

Description

Technical Field

[0001] The invention relates to the technical field of temperature measurement, in particular to a power supply testing device. Background Art

[0002] The power board is a key component in the power supply and the main test target for its performance. The temperature rise is a key parameter of the power board. The thermal performance of the power board under normal and extreme working conditions ensures that its temperature remains within a safe range during long-term operation to avoid performance degradation, shortened life, and even safety accidents caused by overheating. Through testing, the design rationality, heat dissipation efficiency, and temperature resistance of components of the power board can be verified, providing data support for product optimization, and thus a power supply test device is needed to perform temperature rise testing on the power board.

[0003] How to detect its temperature rise, the publication number is CN1928519A, a thermocouple temperature measuring device, which includes: a thermocouple, the thermocouple includes two wires, one end of the two wires are interconnected to form a measuring end of the thermocouple, and the other end is interconnected to form a free end of the thermocouple, and a clamping device, the clamping device includes a clamping foot for clamping the measuring end of the thermocouple and providing a predetermined contact force for the measuring end of the thermocouple to contact the surface of the object to be measured. The invention clamps the thermocouple by the clamping device, and applies a certain prestress to the thermocouple by bolts so that the thermocouple and the power board are always in contact. However, this method is not easy to hold the force, and it is easy for the thermocouple to damage the surface components of the power supply, and the thermocouple needs to be cooled after measuring the temperature at the temperature measuring point before the next temperature measurement can be performed, and the efficiency is low when measuring the temperature of the power board. Summary of the invention

[0004] The object of the present invention is to provide a power supply testing device to solve the problem in the above background technology that the application scope of the current power supply testing device itself is limited.

[0005] In order to solve the above-mentioned invention problems, the present invention adopts the following technical solutions:

[0006] A power supply testing device provided by the present invention comprises: a test bench, a temperature measuring component and a moving component, wherein the test bench is used to place a power supply board to be tested, and the temperature measuring component comprises a thermocouple for testing the contact thermal resistance of the power supply board:

[0007] The thermocouple includes a wire tube and a test head, and the movable assembly includes a movable bracket, a rotating assembly frame and a force gauge, wherein the rotating assembly frame is used to assemble the test head and can apply a predetermined pressure to the test head when the test head contacts the power board, the force gauge is used to feedback the contact pressure between the test head and the power board, and the movable bracket is used to drive the movable assembly to move as a whole relative to the power board.

[0008] Preferably, the temperature measuring component also includes a thermometer and a wiring barrel, and the test head includes a measuring end for contacting the power board and an assembly end for connecting the wire barrel. When testing the power board, the wiring barrel is electrically connected to the wire barrel, so that the thermometer displays the test result of the measuring end.

[0009] Preferably, the moving assembly further comprises a connecting mounting seat for connecting the rotating assembly frame and the force measuring device;

[0010] The rotating assembly frame comprises a rotating disk arranged with the axis of the wire barrel as the rotation center, and the rotating disk is provided with at least three sliding cavities for accommodating the test head in a circular array around its rotation center;

[0011] The connecting mounting seat comprises an annular cavity for assembling the rotating disk, and the bottom of the force measuring device is provided with a force sensor for feeding back the pressure change between the connecting mounting seat and the bottom of the force measuring device.

[0012] Preferably, the test head is cylindrical, with an extended limit ring concentrically arranged in the middle, and accordingly, a sliding groove cooperating with the limit ring is arranged in the sliding cavity, and a first return spring is installed between the sliding groove and the limit ring in the sliding cavity, and the first return spring has a pre-tightening force that causes the limit ring to tend to slide away from the center of the rotating disk.

[0013] Preferably, the assembly end of the test head includes a pair of terminals, and the wire barrel has a terminal slot corresponding to the terminals;

[0014] The wire barrel comprises an annular slide groove for sliding the assembly end of the test head, and an annular slide groove is formed on the outer surface of the wire barrel around the center of the circle;

[0015] The wire tube also includes a calibration structure to prevent the terminal and the terminal slot from being misaligned. The assembly end of the test head is provided with a guide groove at the center position of the pair of terminal posts. The calibration structure includes a supporting spring and a guide frame that slides with the guide groove. The supporting spring is arranged in the guide frame, and the supporting spring is used to press against the inner wall of the guide groove when the guide frame slides with the guide groove.

[0016] Preferably, the movable bracket includes a cantilever for assembling the dynamometer, and the dynamometer and one end of the cantilever are vertically slidably matched via a screw rod and an internal threaded slider structure.

[0017] Preferably, the rotating assembly frame further comprises a reduction gear set for reducing the rotation speed of the rotating disk;

[0018] The connecting mounting seat also includes an annular assembly cavity opened at the axial center of the annular cavity, a reduction gear set is rotatably installed inside the annular assembly cavity, the output end of the reduction gear set is used to drive the rotating disk to rotate, and a rotating inner rod for driving the reduction gear set to rotate passes through the connecting mounting seat near the center of the annular assembly cavity, and a rotating sleeve is sleeved on the outer surface of the rotating inner rod.

[0019] Preferably, the rotating assembly frame further comprises a limiting structure for positioning the rotating inner rod, the rotating inner rod is provided with at least three groups of the limiting structures in a circular array around its rotation center, the limiting structure comprises a clamping spring, a clamping groove and a clamping block, and the clamping block can position the rotating inner rod through the clamping groove by the pre-tightening force applied by the clamping spring;

[0020] An annular mounting cylinder for assembling a limiting structure is fixedly mounted on the rotating sleeve, a clamping block is movably mounted on the inner wall of the annular mounting cylinder through an assembly groove, the clamping block is connected to the assembly groove of the annular mounting cylinder through a compression spring, and a clamping groove engaged with the clamping block is provided on the outer surface of the rotating inner rod.

[0021] Preferably, the rotating assembly frame further comprises a lifting structure for driving the rotating sleeve to rotate, the lifting structure comprises a moving assembly block and a gear and a rack, the gear and the rack are assembled on the end of the rotating sleeve through the moving assembly block;

[0022] A gear is fixedly mounted on the end of the rotating sleeve, a rotating sleeve and a gear are rotatably mounted inside the movable assembly block through an assembly groove, and a rack matched with the gear is movably connected inside the movable assembly block through the assembly groove;

[0023] The movable bracket further comprises a cross movable member for sliding the lifting structure, and the bottom of the cross movable member is fixedly mounted on the test bench;

[0024] The connecting mounting seat also includes a positioning structure for limiting the rotation of the rotating disk, and the positioning structure includes a second return spring and an insertion rod, a movable cavity and a slot. The insertion rod can be inserted into the interior of the slot to rotate the rotating disk through the pre-tightening force applied by the second return spring. The rotating disk is provided with at least three slots for cooperating with the insertion rod in a circular array around its rotation center.

[0025] Preferably, the connection mounting seat further comprises a ventilation structure for dissipating heat from the test head, the ventilation structure comprising an annular heat dissipation groove, an air outlet and an impeller, and the rotation of the impeller can discharge the heat generated by the measuring end inside the annular heat dissipation groove when working through the air outlet;

[0026] An annular heat dissipation groove for sliding of the measuring end is provided on the axial inner wall of the annular cavity, an air outlet is provided through the top of the annular heat dissipation groove, and an impeller is rotatably installed inside the air outlet, a through groove is provided through the inner wall of the air outlet near the impeller, a toothed belt wheel is rotatably installed in the through groove, and the toothed belt wheel is rotatably connected to the impeller through a toothed belt;

[0027] The rotating assembly frame also includes a speed-up gear set for increasing the rotation speed of the impeller. The input end of the speed-up gear set is connected to one end of the rotating sleeve, and the output end of the speed-up gear set is installed inside the toothed belt pulley. The speed-up gear set can drive the toothed belt pulley to rotate at high speed through the rotation of the rotating sleeve.

[0028] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0029] 1. When the force gauge moves downward, it will drive the test head to measure the temperature of the surface of the power board. The force gauge can drive the gear to move downward by rotating the inner rod and the rotating sleeve and other parts. When the gear moves downward, it can rotate through the meshing cooperation of the rack. The rotation of the gear can drive the rotating disk to rotate through the rotating sleeve and the rotating inner rod. When the rotating disk rotates, it can drive the three groups of test heads to rotate, so that the three groups of test heads can be used in turn. When one group of test heads is used up, it can be put away for cooling, and replaced with another group of test heads for use, which can greatly improve the efficiency of temperature measurement;

[0030] 2. A rotating sleeve is provided, which can drive the toothed belt pulley to rotate through the cooperation of the first speed-up gear and the second speed-up gear when rotating, and the toothed belt pulley can drive the toothed belt to rotate when rotating, and the toothed belt can drive the impeller to rotate when rotating. The rotation of the impeller will generate suction to draw external air into the heat dissipation tank. When the air enters the heat dissipation tank, it will cool down the test head. After the test head is cooled, the air can be discharged through the air outlet, so that the test head can be quickly cooled after use;

[0031] 3. A force gauge is provided which can drive the test head to generate contact force with the power board when it moves downward, and can slide inside the sliding cavity when the test head is squeezed, and can drive the terminal at the top to be inserted into the inside of the wiring slot when the test head slides, so that the test head can be tightly connected with the wire barrel during temperature measurement, and can also drive the three groups of test heads to rotate by rotating the rotating disk when the test head rotates, and can drive the assembly end to slide inside the annular slide slot when the test head rotates, and can drive the guide slot to slide to the side of the guide frame when the assembly end of the test head rotates, and at this time the guide slot can squeeze the supporting spring piece, so that the test head can be tightly connected with the wire barrel during temperature measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0033] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0034] Figure 2 It is a side view structural schematic diagram of the present invention;

[0035] Figure 3 It is a schematic diagram of a three-dimensional cross-sectional structure from a perspective one of the mobile assembly of the present invention;

[0036] Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the mobile component of the present invention from a second viewing angle;

[0037] Figure 5 It is a schematic diagram of a partial three-dimensional section enlarged structure of the connecting mounting seat of the present invention;

[0038] Figure 6 It is a schematic diagram of the front cross-sectional structure of the connecting mounting seat of the present invention;

[0039] Figure 7 The present invention Figure 3 A schematic diagram of the enlarged structure of part A;

[0040] Figure 8 The present invention Figure 4 A schematic diagram of the enlarged structure of part B;

[0041] Fig. 9 The present invention Figure 4 A schematic diagram of the enlarged structure of part C;

[0042] In the figure:

[0043] 1. Test bench;

[0044] 2. Temperature measurement component;

[0045] 21. Thermometer;

[0046] 22. Wiring barrel;

[0047] 23. Thermocouple;

[0048] 231, wire barrel; 2311, annular slide groove; 2312, wiring groove; 2313, guide frame; 2314, supporting spring;

[0049] 232, test head; 2321, limit ring; 2322, first return spring; 2323, terminal; 2324, guide groove; 2325, measuring end;

[0050] 3. Mobile components;

[0051] 31. Mobile bracket; 311. Cantilever; 312. Screw rod; 313. Internal thread slider; 314. Cross moving part;

[0052] 32. Rotating assembly frame; 321. Rotating plate; 322. Sliding cavity;

[0053] 324, reduction gear set; 3241, gear ring; 3242, first reduction gear; 3243, second reduction gear;

[0054] 327, rotating inner rod; 328, rotating sleeve; 329, annular mounting cylinder; 3210, compression spring; 3211, clamping block; 3212, clamping groove; 3213, gear; 3214, rack; 3215, movable assembly block;

[0055] 3216, speed-up gear set; 3216a, first speed-up gear; 3216b, second speed-up gear;

[0056] 33. Dynamometer;

[0057] 34. Connecting mounting seat; 341. Annular cavity; 342. Annular assembly cavity; 343. Moving cavity; 344. Insertion rod; 345. Second return spring; 346. Slot; 347. Toothed belt pulley; 348. Annular heat dissipation groove; 349. Air outlet; 3410. Impeller; 3411. Through groove; 3412. Toothed belt. DETAILED DESCRIPTION

[0058] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0059] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, power board or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, power boards or devices.

[0060] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0061] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0062] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0063] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 7 The present invention provides an embodiment: a power supply testing device, comprising: a test bench 1, a temperature measuring component 2 and a moving component 3, the test bench 1 is used to place a power board to be tested, the temperature measuring component 2 comprises a thermocouple 23 for testing the contact thermal resistance of the power board, the thermocouple 23 comprises a wire barrel 231 and a test head 232, two groups of wires are arranged inside the test head 232 and the wire barrel 231, and the wires can be connected one by one when the test head 232 is inserted into the wire barrel 231, the moving component 3 comprises a moving bracket 31, a rotating assembly frame 32 and a force measuring device 33, wherein the rotating assembly frame 32 is used to assemble the test head 232, and can apply a predetermined pressure to the test head 232 when the test head 232 contacts the power board, the force measuring device 33 is used to feedback the contact pressure between the test head 232 and the power board, and the moving bracket 31 is used to drive the moving component 3 to move as a whole relative to the power board.

[0064] It should be understood that the power board to be tested is placed at a specified position on the test bench 1. The test head 232 can be moved to the power board to be tested by operating the movable bracket 31 to apply a predetermined pressure. At the same time, the force gauge 33 feeds back the contact pressure between the test head 232 and the power board. When the test head 232 moves downward, the three groups of test heads 232 can be exchanged and cooled by rotating the assembly frame 32.

[0065] like Figure 1-Figure 3 and Figure 5-Figure 7 As shown, the temperature measuring component 2 also includes a temperature measuring device 21 and a terminal barrel 22. The test head 232 includes a measuring end 2325 for contacting the power board and an assembly end for connecting the wire barrel 231. When testing the power board, the terminal barrel 22 is electrically connected to the wire barrel 231, so that the temperature measuring device 21 displays the test result of the measuring end 2325.

[0066] The measuring end 2325 of the test head 232 can perform temperature rise test on the test points on the power board. The measuring end 2325 is a closed loop formed by two different metal conductors. When the temperatures of the two junctions are different, current will be generated in the wire loop inside the wire barrel 231 and the wiring barrel 22. The flow of current in the loop will generate an electromotive force, which is converted into a temperature indication by the thermometer 21 and then displays the temperature of the measuring end 2325.

[0067] like Figure 1-Figure 7 As shown, the moving assembly 3 also includes a connecting mounting seat 34 for connecting the rotating assembly frame 32 and the force measuring device 33;

[0068] The rotating assembly frame 32 includes a rotating disk 321 arranged with the axis of the wire barrel 231 as the rotation center, and the rotating disk 321 is provided with at least three sliding cavities 322 for accommodating the test head 232 in a circular array around its rotation center;

[0069] The connecting mounting seat 34 includes an annular cavity 341 for assembling the rotating disk 321 , and a force sensor for feeding back the pressure change between the connecting mounting seat 34 and the bottom of the force measuring device 33 is arranged at the bottom of the force measuring device 33 .

[0070] It can be imagined that the measuring end 2325 of the test head 232 can be driven to move to any position on the power board by the moving assembly 3. When the measuring end 2325 of the test head 232 moves downward, the rotating disk 321 can be rotated in the annular cavity 341 by rotating the assembly frame 32. When the rotating disk 321 rotates, the cooled test head 232 can be rotated to the top of the power board, and the previously working test head 232 can be rotated into the annular cavity 341, so that the test head 232 can be used in turn, so that the test head 232 can be cooled during the continuity test.

[0071] The test head 232 will apply a certain pre-tightening force when testing the power board. The pre-tightening force of the test head 232 on the power board will react on the connecting mounting base 34, and the connecting mounting base 34 can transmit the value of the pre-tightening force to the force gauge 33 through the force sensor. Then, the force gauge 33 can be used to judge whether the pre-tightening force between the test head 232 and the power board meets the test requirements.

[0072] like Figure 3 , Figure 6 and Figure 7 As shown, the test head 232 is cylindrical, and an extended limit ring 2321 is concentrically arranged in the middle thereof. Correspondingly, a sliding groove cooperating with the limit ring 2321 is arranged in the sliding cavity 322, and a first return spring 2322 is assembled between the sliding groove in the sliding cavity 322 and the limit ring 2321. The first return spring 2322 has a pre-tightening elastic force that makes the limit ring 2321 tend to slide away from the center of the rotating disk 321.

[0073] It is worth noting that the test head 232 will generate an extrusion force when testing the power board. The extrusion of the power board will push the test head 232 to move upward. When the test head 232 moves upward, it can slide in the sliding cavity 322. While the test head 232 slides, it can drive the limit ring 2321 to move upward. When the limit ring 2321 moves upward, it can squeeze the first return spring 2322.

[0074] like Figure 3 and Figure 5-Figure 7 As shown, the assembly end of the test head 232 includes a pair of terminal posts 2323, and the wire barrel 231 has a wiring slot 2312 corresponding to the terminal posts 2323;

[0075] When the test head 232 moves, the terminal 2323 can be driven to slide into the wiring slot 2312, so that the test head 232 and the wire barrel 231 are connected to the wiring slot 2312 through the terminal 2323;

[0076] The wire barrel 231 includes an annular slide groove 2311 for the assembly end of the test head 232 to slide, and the outer surface of the wire barrel 231 is provided with an annular slide groove 2311 around the center of the circle;

[0077] When the rotating disk 321 rotates, it can drive the test head 232 to rotate around the center of the wire barrel 231, and the assembly end of the test head 232 can slide inside the annular groove 2311 on the wire barrel 231;

[0078] The wire barrel 231 also includes a calibration structure for preventing the terminal 2323 from being misaligned with the terminal slot 2312. A guide slot 2324 is provided at the center of a pair of terminal posts 2323 at the assembly end of the test head 232. The calibration structure includes a supporting spring 2314 and a guide frame 2313 that slidably cooperates with the guide slot 2324. The supporting spring 2314 is disposed in the guide frame 2313, and the supporting spring 2314 is used to press against the inner wall of the guide slot 2324 when the guide frame 2313 slidably cooperates with the guide slot 2324.

[0079] When the test head 232 rotates, it can drive the guide groove 2324 to slide to the side of the guide frame 2313. At this time, the guide groove 2324 can squeeze the supporting spring 2314, so that the test head 232 and the wire barrel 231 are more tightly connected. The test head 232 can transmit the temperature measurement value to the temperature detector 21 through the wire barrel 231 and the wiring barrel 22.

[0080] like Figure 2 As shown, the mobile bracket 31 includes a cantilever 311 for assembling a dynamometer 33, and the dynamometer 33 and one end of the cantilever 311 are vertically slidably matched with a screw rod 312 and an internal thread slider 313 structure;

[0081] The adjusting knob at the top of the screw rod 312 can be turned to rotate on the cantilever 311. When the screw rod 312 rotates, it can drive the internal thread slider 313 on the surface to slide up and down. When the internal thread slider 313 slides, it can drive the dynamometer 33, the connecting mounting seat 34 and the rotating assembly frame 32 to move up and down.

[0082] like Figure 2-Figure 6 , Figure 8 and Fig. 9 As shown, the rotating assembly frame 32 further includes a reduction gear set 324 for reducing the rotation speed of the rotating disk 321;

[0083] The connecting mounting seat 34 also includes an annular assembly cavity 342 opened at the axial center of the annular cavity 341, and a reduction gear set 324 is rotatably installed inside the annular assembly cavity 342. The output end of the reduction gear set 324 is used to drive the rotating disk 321 to rotate. A rotating inner rod 327 for driving the reduction gear set 324 to rotate passes through the connecting mounting seat 34 near the center of the annular assembly cavity 342, and a rotating sleeve 328 is sleeved on the outer surface of the rotating inner rod 327.

[0084] like Fig. 9As shown, in some embodiments, the reduction gear set 324 includes a gear ring 3241 and a first reduction gear 3242 and a second reduction gear 3243. When the inner rod 327 is rotated, the first reduction gear 3242 at the end can be driven to rotate. When the first reduction gear 3242 is rotated, the second reduction gear 3243 can be driven to mesh and rotate in the annular assembly cavity 342. When the second reduction gear 3243 is meshed and rotated, it can drive the gear ring 3241 to mesh and rotate. When the gear ring 3241 is meshed and rotated, it can drive the rotating disk 321 to rotate in the annular cavity 341. The first reduction gear 3242, the second reduction gear 3243 and the gear ring 3241 can reduce the rotation speed of the rotating disk 321 when it descends through the coordination of the transmission ratio.

[0085] It can be imagined that when the rotating inner rod 327 rotates, it can drive the input end of the reduction gear set 324 at the end to work. When the input end of the reduction gear set 324 works, it can drive the rotating disk 321 to rotate in the annular cavity 341. The reduction gear set 324 can reduce the rotation speed of the rotating disk 321 when it descends by cooperating with the internal gear rotation ratio.

[0086] like Figure 2 , Figure 3 , Figure 8 and Fig. 9 As shown, the rotating assembly frame 32 also includes a limiting structure for positioning the rotating inner rod 327. The rotating inner rod 327 is provided with at least three groups of limiting structures in a circular array around its rotation center. The limiting structure includes a compression spring 3210, a clamping groove 3212, and a clamping block 3211. The clamping block 3211 can position the rotating inner rod 327 through the clamping groove 3212 by the pre-tightening force applied by the compression spring 3210;

[0087] An annular mounting cylinder 329 for assembling a limiting structure is fixedly mounted on the rotating sleeve 328, and a clamping block 3211 is movably mounted on the inner wall of the annular mounting cylinder 329 through an assembly groove. The clamping block 3211 is connected to the assembly groove of the annular mounting cylinder 329 through a clamping spring 3210, and a clamping groove 3212 is provided on the outer surface of the rotating inner rod 327 for clamping connection with the clamping block 3211.

[0088] When the rotating disk 321 rotates to a specified angle, it will be restricted by the positioning structure and stop rotating. However, at this time, the connecting mounting seat 34 will continue to drive the rotating sleeve 328 to move toward each other. When the rotating sleeve 328 moves toward each other, it can be rotated through the cooperation of the lifting structure. When the rotating sleeve 328 rotates, it can rotate on the surface of the rotating inner rod 327. When the rotating sleeve 328 rotates, it can drive the annular mounting cylinder 329 to rotate. When the annular mounting cylinder 329 rotates, it can drive the assembly slot to drive the block 3211 to rotate. When the block 3211 rotates, it can squeeze the inclined surface of the slot 3212 through its own inclined surface. When the block 3211 is squeezed, it can slide in the assembly slot of the annular mounting cylinder 329. When the block 3211 slides, it can squeeze the compression spring 3210. When the block 3211 is squeezed out of the slot 3212, it can continue to rotate to the next slot 3212 and reset through the elastic force of the compression spring 3210.

[0089] When the rotating disk 321 is not restricted by the positioning structure, the rotation of the rotating sleeve 328 can drive the rotating inner rod 327 to rotate through the cooperation of the compression spring 3210, the block 3211 and the slot 3212. When the rotating inner rod 327 rotates, it will drive the rotating disk 321 to rotate through the deceleration structure.

[0090] like Figure 1-Figure 3 As shown, the rotating assembly frame 32 also includes a lifting structure for driving the rotating sleeve 328 to rotate, and the lifting structure includes a moving assembly block 3215, a gear 3213, and a rack 3214. The gear 3213 and the rack 3214 are assembled at the end of the rotating sleeve 328 through the moving assembly block 3215;

[0091] The end of the rotating sleeve 328 is fixedly mounted with a gear 3213, the rotating sleeve 328 and the gear 3213 are rotatably mounted inside the movable assembly block 3215 through an assembly groove, and the movable assembly block 3215 is movably connected with a rack 3214 matched with the gear 3213 through the assembly groove;

[0092] It should be noted that when the rotating sleeve 328 moves downward, it can drive the gear 3213 at the end and the movable assembly block 3215 to move downward. When the movable assembly block 3215 moves downward, it can slide on the surface of the rack 3214. When the gear 3213 moves downward, it can mesh and rotate through the rack 3214. When the gear 3213 meshes and rotates, it can drive the rotating sleeve 328 to rotate. When the rotating sleeve 328 rotates, it can rotate inside the movable assembly block 3215. When the rotating sleeve 328 rotates, it can drive the rotating inner rod 327 to rotate through the limiting structure.

[0093] The mobile bracket 31 also includes a cross moving member 314 for sliding the lifting structure, and the bottom of the cross moving member 314 is fixedly mounted on the test bench 1;

[0094] The connecting mounting seat 34 also includes a positioning structure for limiting the rotation of the rotating disk 321, and the positioning structure includes a second return spring 345 and an insertion rod 344, a movable cavity 343 and a slot 346. The insertion rod 344 can be inserted into the interior of the slot 346 to rotate the rotating disk 321 through the pre-tightening force applied by the second return spring 345. The rotating disk 321 is provided with at least three slots 346 for cooperating with the insertion rod 344 in a circular array around its rotation center.

[0095] After the temperature measurement of the power board is completed, the test head 232 needs to move upwards by connecting the mounting seat 34 and the movable bracket 31. Before the mounting seat 34 moves upwards, the plug rod 344 needs to be pulled to slide inside the movable cavity 343 and the slot 346. When the end of the plug rod 344 slides out of the slot 346, the mounting seat 34 can be lowered. The plug rod 344 can squeeze the second return spring 345 inside the movable cavity 343 when sliding. When the mounting seat 34 moves upwards, it can drive the rotating disk 321 to rotate through the work of the rotating assembly frame 32. When the rotating disk 321 rotates, it can The three slots 346 on the moving surface rotate around their axial center. When the slots 346 and the insertion rod 344 are misaligned, they can be loosened so that the insertion rod 344 fits the surface of the rotating disk 321. When the rotating disk 321 drives the next slot 346 to rotate to the end of the insertion rod 344, the insertion rod 344 can be reset by the elastic force of the second reset spring 345 and inserted into the interior of the slot 346 to position the rotating disk 321. The three slots 346 correspond to the three test heads 232 one by one. When the insertion rod 344 is plugged into the slot 346, the test head 232 is also replaced, so that the rotation angle of the test head 232 is more precise when it is replaced.

[0096] like Figure 2-Figure 6 , Figure 8 and Fig. 9 As shown, the connection mounting base 34 also includes a ventilation structure for dissipating heat from the test head 232, the ventilation structure includes an annular heat dissipation groove 348, an air outlet 349 and an impeller 3410, and the impeller 3410 rotates to discharge the heat generated by the measuring end 2325 inside the annular heat dissipation groove 348 when working through the air outlet 349;

[0097] An annular heat dissipation groove 348 for sliding the measuring end 2325 is provided on the axial inner wall of the annular cavity 341. An air outlet 349 is provided at the top of the annular heat dissipation groove 348, and an impeller 3410 is rotatably installed inside the air outlet 349. A through groove 3411 is provided on the inner wall of the air outlet 349 near the impeller 3410. A toothed belt pulley 347 is rotatably installed on the through groove 3411. The toothed belt pulley 347 is rotatably connected to the impeller 3410 via a toothed belt 3412.

[0098] The rotating assembly frame 32 also includes a speed-up gear set 3216 for increasing the rotation speed of the impeller 3410. The input end of the speed-up gear set 3216 is connected to one end of the rotating sleeve 328, and the output end of the speed-up gear set 3216 is installed inside the toothed belt pulley 347. The speed-up gear set 3216 can drive the toothed belt pulley 347 to rotate at high speed through the rotation of the rotating sleeve 328.

[0099] like Fig. 9 As shown, in some embodiments, the speed-up gear set 3216 includes a second speed-up gear 3216b and a first speed-up gear 3216a fixedly mounted on the surface of a rotating sleeve 328. The first speed-up gear 3216a can drive the second speed-up gear 3216b to rotate at a high speed through the rotation of the rotating sleeve 328. The second speed-up gear 3216b is fixedly mounted on the surface of the toothed pulley 347 through an assembly hole. The second speed-up gear 3216b and the first speed-up gear 3216a can increase the rotation speed of the impeller 3410 through a transmission ratio.

[0100] It can be imagined that when the rotating sleeve 328 rotates, it can drive the input end of the speed-up gear set 3216 at the end to work. When the speed-up gear set 3216 works, it can drive the toothed belt pulley 347 inside the through groove 3411 to rotate through the output end. When the toothed belt pulley 347 rotates, it can drive the impeller 3410 to rotate counterclockwise or clockwise through the toothed belt 3412. The counterclockwise rotation of the impeller 3410 can transport external air through the air outlet 349 to the inside of the annular heat dissipation groove 348 to dissipate the measuring end 2325, and the air can be discharged through the end of the annular heat dissipation groove 348. The clockwise rotation of the impeller 3410 can transport external air through the end of the annular heat dissipation groove 348 to the inside of the annular heat dissipation groove 348 to dissipate the measuring end 2325 to dissipate the heat. After the measuring end 2325 is cooled, the air can be discharged through the air outlet 349.

[0101] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A power supply testing device, comprising: A test bench (1), a temperature measuring component (2) and a moving component (3), wherein the test bench (1) is used to place a power board to be tested, and the temperature measuring component (2) comprises a thermocouple (23) for testing the contact thermal resistance of the power board, and is characterized in that: The thermocouple (23) comprises a wire barrel (231) and a test head (232); the mobile assembly (3) comprises a mobile bracket (31), a rotating assembly frame (32) and a force gauge (33); the rotating assembly frame (32) is used to assemble the test head (232) and is capable of applying a predetermined pressure to the test head (232) when the test head (232) contacts the power board; the force gauge (33) is used to feedback the contact pressure between the test head (232) and the power board; and the mobile bracket (31) is used to drive the mobile assembly (3) to move as a whole relative to the power board; The moving assembly (3) further comprises a connecting mounting seat (34) for connecting the rotating assembly frame (32) and the force measuring device (33); The rotating assembly frame (32) comprises a rotating disk (321) arranged with the axis of the wire barrel (231) as the rotation center, and the rotating disk (321) is provided with at least three sliding cavities (322) for accommodating the test head (232) in a circular array around its rotation center; The connecting mounting seat (34) comprises an annular cavity (341) for assembling the rotating disk (321), and a force sensor for feeding back pressure changes between the connecting mounting seat (34) and the bottom of the force measuring device (33) is arranged at the bottom of the force measuring device (33); The rotating assembly frame (32) further comprises a reduction gear set (324) for reducing the rotation speed of the rotating disk (321); The connecting mounting seat (34) further comprises an annular assembly cavity (342) which is provided at the axial center of the inner portion of the annular cavity (341); a reduction gear set (324) is rotatably mounted in the inner portion of the annular assembly cavity (342); an output end of the reduction gear set (324) is used to drive the rotating disk (321) to rotate; a rotating inner rod (327) for driving the reduction gear set (324) to rotate is penetrated at a position near the center of the annular assembly cavity (342) of the connecting mounting seat (34); a rotating sleeve (328) is sleeved on the outer surface of the rotating inner rod (327); The rotating assembly frame (32) further comprises a limiting structure for positioning the rotating inner rod (327); the rotating inner rod (327) is provided with at least three groups of the limiting structures in a circular array around its rotation center; the limiting structure comprises a compression spring (3210), a clamping groove (3212), and a clamping block (3211); the clamping block (3211) can position the rotating inner rod (327) through the clamping groove (3212) by means of a pre-tightening force applied by the compression spring (3210); An annular mounting cylinder (329) for assembling a limiting structure is fixedly mounted on the rotating sleeve (328); a clamping block (3211) is movably mounted on the inner wall of the annular mounting cylinder (329) via a mounting groove; the clamping block (3211) is connected to the mounting groove of the annular mounting cylinder (329) via a compression spring (3210); and a clamping groove (3212) is provided on the outer surface of the rotating inner rod (327) for clamping connection with the clamping block (3211); The rotating assembly frame (32) further comprises a lifting structure for driving the rotating sleeve (328) to rotate, the lifting structure comprising a movable assembly block (3215) and a gear (3213) and a rack (3214), the gear (3213) and the rack (3214) being assembled on the end of the rotating sleeve (328) via the movable assembly block (3215); A gear (3213) is fixedly mounted on the end of the rotating sleeve (328); the rotating sleeve (328) and the gear (3213) are rotatably mounted inside the movable assembly block (3215) via an assembly groove; and a rack (3214) matching the gear (3213) is movably connected inside the movable assembly block (3215) via the assembly groove; The movable bracket (31) further comprises a cross movable member (314) for sliding the lifting structure, and the bottom of the cross movable member (314) is fixedly mounted on the test bench (1); The connecting mounting seat (34) further comprises a positioning structure for limiting the rotation of the rotating disk (321), the positioning structure comprising a second return spring (345) and an insertion rod (344), a movable cavity (343) and a slot (346), the insertion rod (344) being able to be inserted into the interior of the slot (346) to align the rotating disk (321) through the pre-tightening force applied by the second return spring (345), and the rotating disk (321) is provided with at least three slots (346) for cooperating with the insertion rod (344) in an annular array around its rotation center; The connection mounting seat (34) also includes a ventilation structure for dissipating heat from the test head (232).

2. The power supply testing device according to claim 1, characterized in that: The temperature measurement assembly (2) further comprises a temperature detector (21) and a wiring barrel (22); the test head (232) comprises a measuring end (2325) for contacting a power board and an assembly end for connecting to the wire barrel (231); when testing the power board, the wiring barrel (22) is electrically connected to the wire barrel (231), so that the temperature detector (21) displays the test result of the measuring end (2325).

3. The power supply testing device according to claim 1, characterized in that: The test head (232) is cylindrical, and an outwardly extending limit ring (2321) is concentrically arranged in the middle thereof; accordingly, a sliding groove cooperating with the limit ring (2321) is arranged in the sliding cavity (322), and a first return spring (2322) is installed between the sliding groove in the sliding cavity (322) and the limit ring (2321); the first return spring (2322) has a pre-tightening elastic force that causes the limit ring (2321) to slide away from the center of the rotating disk (321).

4. The power supply testing device according to claim 2, characterized in that: The assembly end of the test head (232) comprises a pair of terminal posts (2323), and the wire barrel (231) has a terminal slot (2312) corresponding to the terminal posts (2323); The wire barrel (231) comprises an annular slide groove (2311) for sliding the assembly end of the test head (232); the outer surface of the wire barrel (231) is provided with an annular slide groove (2311) around the center of the circle; The wire barrel (231) further comprises a calibration structure for preventing the terminal (2323) from being misaligned with the terminal slot (2312); a guide slot (2324) is provided at the assembly end of the test head (232) at a central position of the pair of terminal posts (2323); the calibration structure comprises a supporting spring sheet (2314) and a guide frame (2313) slidably engaged with the guide slot (2324); the supporting spring sheet (2314) is arranged in the guide frame (2313), and the supporting spring sheet (2314) is used to press against the inner wall of the guide slot (2324) when the guide frame (2313) and the guide slot (2324) are slidably engaged.

5. The power supply testing device according to claim 1, characterized in that: The movable bracket (31) comprises a cantilever (311) for assembling the dynamometer (33), and the dynamometer (33) and one end of the cantilever (311) are vertically slidably matched via a screw rod (312) and an internally threaded slider (313) structure.

6. The power supply testing device according to claim 1, characterized in that: The ventilation structure comprises an annular heat dissipation groove (348), an air outlet hole (349), and an impeller (3410); the impeller (3410) rotates to discharge heat generated by the measuring end (2325) inside the annular heat dissipation groove (348) during operation through the air outlet hole (349); An annular heat dissipation groove (348) for sliding of the measuring end (2325) is provided on the axial inner wall of the annular cavity (341); an air outlet (349) is provided through the top of the annular heat dissipation groove (348); an impeller (3410) is rotatably mounted inside the air outlet (349); a through groove (3411) is provided through the inner wall of the air outlet (349) near the impeller (3410); a toothed belt pulley (347) is rotatably mounted on the through groove (3411); the toothed belt pulley (347) is rotatably connected to the impeller (3410) via a toothed belt (3412); The rotating assembly frame (32) further comprises a speed-increasing gear set (3216) for increasing the rotation speed of the impeller (3410); the input end of the speed-increasing gear set (3216) is connected to one end of the rotating sleeve (328); the output end of the speed-increasing gear set (3216) is installed inside the toothed belt pulley (347); the speed-increasing gear set (3216) can drive the toothed belt pulley (347) to rotate at a high speed through the rotation of the rotating sleeve (328).

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