Universal static test tool

Abstract

The utility model discloses a universal static test tool, and belongs to the technical field of power device test. The testing tool comprises a testing tool body, a bottom plate assembly and a testing assembly are arranged on the testing tool body, the testing assembly is connected with the bottom plate assembly, the testing assembly comprises a testing plate fixing part and a testing plate wiring part, a clamping groove structure and a PCB testing plate connected with the clamping groove structure in a matched mode are arranged on the testing plate fixing part, and a switch assembly is connected to the bottom plate assembly. The switch assembly is connected with the conductive contact piece of the PCB test board. According to the utility model, the structure is simple, the operation is simple and convenient, the test board fixing part of the test tool is provided with the clamping groove structure for fixing the PCB test board, and then the conductive contact piece reserved on the PCB test board is connected with the switch assembly of the test tool, thereby greatly reducing the complexity and difficulty when a new product is tested, and improving the test efficiency. Through mutual cooperation of the base plate assembly and the testing assembly, testing of products of different sizes is achieved, the structural universality is improved, resource waste is reduced, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to power device test technical field, more specifically, relate to a general static test frock. BACKGROUND

[0002] The static test fixture of IGBT can provide efficient test, but the professional test fixture is expensive and the application product is single. Most of the existing test equipment is single purpose, usually limited to fixed mass production product application, only one product can be corresponded, the limitation is higher, cannot satisfy the diversified application demand, lacks the general design, leads to the high cost of repeated development, and the wiring is complex when the new product development carries out static test, is inconvenient for testing.

[0003] And the size of the test frock existing at present is not same because of the different size of product, the corresponding frock only corresponds to the same product, causes more product waste. UTILITY MODEL CONTENT

[0004] The utility model provides a general static test frock for the technical problem existing in prior art.

[0005] In order to solve the above technical problem, the utility model discloses a test frock main part, is provided with bottom plate subassembly and test subassembly on test frock main part, test subassembly is connected with bottom plate subassembly, and test subassembly includes test plate fixed part and test plate wiring part, is equipped with the clamping groove structure and the PCB test plate matched with the clamping groove structure on test plate fixed part, and the switch subassembly is connected on bottom plate subassembly, and the conductive contact piece of switch subassembly is connected with PCB test plate.

[0006] Preferably, the bottom plate subassembly includes a support bottom plate, which includes a switch connection portion connected with the switch subassembly and a product positioning portion, the switch connection portion includes a threaded mounting hole, and the product positioning portion is provided with a positioning hole.

[0007] Preferably, the test plate fixed part includes a test plate fixed plate, and the clamping groove structure is provided with a connecting clamping groove arranged along the length direction of the test plate fixed plate, and the connecting clamping groove is an inner groove structure, and the side edge of the test plate fixed plate is provided with a connecting portion connected with the test plate wiring part.

[0008] Preferably, the connecting clamping groove is a straight slot structure, and the two ends of the connecting clamping groove are open structures, and the vertical height of the connecting clamping groove is 1.6mm-1.7mm.

[0009] Preferably, the connecting clamping groove is provided with an elastic buckle and a limiting block, the elastic buckle is made of polyurethane elastic material, and the inner side surface of the elastic buckle is provided with anti-skid lines.

[0010] Preferably, the test board connecting part comprises a wiring circuit board, a plurality of wire connecting holes are uniformly arranged on the wiring circuit board, a PCB clamping jaw structure is arranged on the side of the wire connecting hole, and a connecting matching part connected with the test board fixing part is arranged on the end of the wiring circuit board.

[0011] Preferably, the PCB clamping jaw structure is composed of a plurality of clamping jaw units arranged at equal intervals, the clamping jaw unit is an elastic clamping structure with a clamping space in the middle, and the PCB clamping jaw structure is arranged along the length direction of the wiring circuit board.

[0012] Preferably, the switch assembly comprises an input end, a signal end and a test switch, the input end and the signal end are connected with the test bench, the test switch is controlled to turn on and turn off in one way, and the switch assembly is further provided with a switch connecting matching part connected with the bottom plate assembly.

[0013] Preferably, the switch assembly comprises two input ends and one signal end, the input ends are arranged adjacent to the signal end, and the switch connecting matching parts are arranged at four corners and a middle region of the switch assembly.

[0014] Preferably, the on-board area of the PCB test board is divided into a test function area and a connecting function area, the connecting function area is provided with a conductive contact patch connected with the switch assembly, the conductive contact patch is arranged in an interlaced double-row structure, and each row comprises a plurality of contact points.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model discloses simple structure, easy operation, through the card slot structure of fixed PCB test board on the test tool test board fixing part, then through the conductive contact patch reserved on the PCB test board and the switch assembly of test tool are connected, greatly reduce the complex difficulty when testing new product, realize the test of different size products through the mutual cooperation of bottom plate assembly and test assembly, do not need to reconfigure the special test tool according to the test equipment, increase the structural versatility, reduce the waste of resources, reduce the cost. ACCURACY OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiment of the present application, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating labor intensity.

[0018] Figure 1 It is the whole structure schematic view of the static test tool embodiment of the utility model;

[0019] Figure 2Structure schematic view of the test tool support bottom plate embodiment of the utility model;

[0020] Figure 3 Structure schematic view of the test tool test plate fixed plate embodiment of the utility model;

[0021] Figure 4 Structure schematic view of the test tool wiring circuit board embodiment of the utility model;

[0022] Figure 5 Structure schematic view of the test tool switch assembly embodiment of the utility model.

[0023] Marking explanation of the figure:

[0024] 1, test tool main body;2, bottom plate assembly;21, support bottom plate;22, threaded mounting hole;23, positioning hole;24, counterbore;3, test plate fixing part;31, test plate fixed plate;32, connecting clamping groove;33, M3 threaded hole;34, M4 threaded hole;4, test plate wiring part;41, wiring circuit board;42, wire connecting hole;43, PCB clamping jaw structure;44, connecting fixed hole;5, switch assembly;51, input end;52, signal end;53, test switch;54, switch main body;55, M3 connecting hole. Specific implementation

[0025] In order to make the technical problem, technical scheme and beneficial effect to be solved in the application more clear and obvious, the application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the application, and are not used to limit the application.

[0026] Please refer to Figure 1 、 Figure 2 The utility model provides a general static test tool, including test tool main body 1, test tool main body 1 is provided with bottom plate assembly 2 and test assembly, test assembly is connected with bottom plate assembly 2, and test assembly includes test plate fixing part 3 and test plate wiring part 4, is equipped with clamping groove structure and the PCB test plate matched with clamping groove structure on test plate fixing part 3, and the switch assembly 5 is connected on bottom plate assembly 2, and the electrically conductive contact piece of switch assembly 5 is connected with PCB test plate.

[0027] The utility model discloses simple structure, easy operation, through the fixed PCB test board's clamping groove structure that is set up on the test board fixing part 3 of test tool, then through the conductive contact piece that is reserved on PCB test board and the switch subassembly 5 of test tool are connected, greatly reduce the complex difficulty when testing new product, realize the test of different size products through the mutual cooperation of bottom plate subassembly 2 and test subassembly, need not according to test equipment and reconfigure special test tool, increase structural versatility, reduce the waste of resources, reduce cost.

[0028] In the embodiment, as shown in the figure, Figure 2 The bottom plate subassembly 2 includes a support bottom plate 21, which includes a switch connecting part connected with the switch subassembly 5 and a product positioning part, and the switch connecting part includes threaded mounting holes 22, and the product positioning part is provided with positioning holes 23.

[0029] Specifically, the support bottom plate 21 is a square plate-shaped support structure, the side of the support bottom plate 21 is provided with six evenly distributed threaded mounting holes 22, the support bottom plate 21 is connected with the switch subassembly 5 through the threaded mounting holes 22, used for fixing the switch subassembly 5, the threaded mounting holes 22 are provided with fixing screws, and the fixing screws connect the switch subassembly 5 to the upper part of the support bottom plate 21.

[0030] The upper part of the support bottom plate 21 is provided with four positioning holes 23, and the four positioning holes 23 are self-defined countersunk holes with different sizes, the product positioning is realized through the positioning holes 23, and the accuracy of the product position during testing is ensured.

[0031] Further, the support bottom plate 21 is also provided with two M4 specification countersunk holes 24 adjacent to the positioning holes.

[0032] In the embodiment, the number of threaded mounting holes 22 and fixing screws can be adjusted according to actual needs, but in order to ensure the stability of the switch subassembly connection, the number of fixing screws is at least four; the specific number and size of the positioning holes 23 can be adjusted according to the actual product positioning needs.

[0033] In the embodiment, the PCB test board corresponds to different IGBT modules, and can be replaced according to the actual measured module, and the PCB test board is connected and fixed through the test board fixing part 3 and the test board wiring part 5, and then connected with the switch subassembly 5 for connection test.

[0034] In the embodiment, as shown in the figure, Figure 3 The test board fixing part 3 includes a test board fixing plate 31, the clamping groove structure is provided with a connecting clamping groove 32, and the side of the test board fixing plate 31 is provided with a connecting part connected with the test board wiring part 4.

[0035] Specifically, the test plate fixing plate 31 is a square plate structure, the connecting clamping groove 32 is arranged at the side edge area of the test plate fixing plate 31, the connecting clamping groove 32 is a linear groove structure arranged along the length direction of the test plate fixing plate 31, and the connecting clamping groove 32 is an inner groove structure, the PCB test plate is connected through the connecting clamping groove 32, the fixation of the PCB test plate during testing is realized, the operation is simple, and the complexity and difficulty during testing of new products are reduced.

[0036] In the embodiment, the test plate fixing plate 31 is vertically arranged at the upper part of the tooling, the connecting clamping groove 32 is arranged at the inner side of the lower end, two test plate fixing plates 31 arranged in parallel with each other are arranged on the test tooling, the PCB test plate is arranged between the two test plate fixing plates 31, and the left and right sides of the PCB test plate are connected with the test plate fixing plates 31, and the front and rear ends are connected with the test plate wiring part 4.

[0037] Furthermore, the two ends of the connecting clamping groove 32 are open structures, the vertical height of the connecting clamping groove 32 is 1.6mm-1.7mm, the mechanical cooperation precision of the PCB test plate and the test tooling can be ensured, the PCB test plate can be prevented from shaking in the clamping groove, and contact failure or assembly difficulty caused by the clamping groove being too deep is avoided, and a certain installation allowance is reserved.

[0038] The long edge side of the test plate fixing plate 31 is provided with two M3 threaded holes 33, and the short edge side is provided with an M4 threaded hole 34, the test plate fixing plate 31 is connected with the tooling connecting part through the M3 threaded hole 33 and connected with the test plate wiring part 4 through the M4 threaded hole 34, so that the stability of product testing is ensured.

[0039] Furthermore, as a preferred embodiment of the utility model, the connecting clamping groove 32 is connected with an elastic buckle and a limiting block (not shown in the figure), the elastic buckle is made of polyurethane elastic material, and an anti-skid line is arranged on the inner side surface of the elastic buckle.

[0040] Specifically, the elastic buckle and the limiting block can be used to adjust and fix PCB test plates of different sizes, and the tooling compatibility is improved. The depth of the anti-skid line is 0.2-0.5mm, the clamping force is provided through elastic deformation, the friction loss is reduced and the wear resistance is enhanced, and the clamping stability is enhanced. Moreover, the elastic buckle can be symmetrically arranged in multiple groups, the clamping width can be dynamically adjusted through mutual cooperation, and different sizes of PCB test plates can be adapted through expansion or contraction.

[0041] In the embodiment, the limiting block is used as the vertical positioning reference of the PCB test board, and limits the lateral displacement of the PCB test board. The height of the limiting block matches the thickness of the PCB test board, so that the PCB test board is aligned with the test tool contact after being inserted, and warping or poor contact is prevented. The distance between the limiting blocks can be slightly greater than the maximum allowable width of the PCB test board, and in combination with the shrinkage allowance of the elastic buckle, the stable fixation of the PCB test board of different sizes is ensured. When the PCB test board is inserted, the elastic buckle is expanded outward under pressure, and the material resilience is used to clamp the edge of the PCB test board. When the PCB test board is pulled out, the buckle is automatically reset to avoid wear.

[0042] Furthermore, as a preferred embodiment of the utility model, the limiting block is a replaceable structure, and different limiting block assemblies with different distances are replaced to adapt to PCB test boards of specific size ranges. Moreover, the elastic buckle can be designed as multiple small buckle structures to improve the compatibility with different board widths, reduce local stress, and reduce the cost of tool modification.

[0043] In the embodiment, as shown in the figure, Figure 4 The test board connecting portion 4 includes a wiring circuit board 41, a plurality of wire connecting holes 42 are uniformly arranged on the wiring circuit board 41, and a PCB clamping jaw structure 43 is arranged on the side of the wire connecting hole 42. The PCB clamping jaw structure is used to clamp and fix the PCB test board, which is convenient for testing.

[0044] Specifically, the PCB clamping jaw structure 43 is composed of a plurality of clamping jaw units arranged at equal intervals. The clamping jaw unit is an elastic clamping structure with a clamping space in the middle. The PCB clamping jaw structure 43 is arranged along the length direction of the wiring circuit board 41. The distance between the clamping jaw units in the PCB clamping jaw structure 43 is 1.6-1.7 mm, which is convenient for fixing the PCB test board.

[0045] In the embodiment, the PCB clamping jaw structure 43 is arranged at the lower part of the wiring circuit board 41, and the connecting clamping groove 32 of the test board fixing plate 31 is arranged on the same horizontal plane, so as to cooperate with each other to clamp and fix the PCB test board.

[0046] In the embodiment, the material of the wiring circuit board 41 is RF-4 material. The wiring circuit board 41 is provided with 3*22 wire connecting holes 42 with a diameter of 2 mm arranged along the length direction of the wiring circuit board 41, which are used for connecting the wires and the switch assembly 5.

[0047] Furthermore, two wiring circuit boards 41 are arranged, and the two ends of the test board fixing plate 31 are vertically connected with the wiring circuit boards 41. The end of the wiring circuit board 41 is provided with a connecting matching portion connected with the test board fixing plate 31. The connecting matching portion includes a connecting fixing hole 44, which is connected with the M4 threaded hole 34 of the test board fixing plate 31, so as to realize stable connection of the components.

[0048] In this embodiment, as shown in Figure 5 The switch assembly 5 includes an input end 51, a signal end 52 and a test switch 53, the input end 51 and the signal end 52 are connected with a test bench, the test switch 53 is controlled to turn on and turn off a single channel, and the switch assembly 5 is further provided with a switch connection matching part connected with the bottom plate assembly 2.

[0049] Specifically, the switch assembly 5 includes a plurality of switch bodies 54 arranged at equal intervals, the input end 51, the signal end 52 and the test switch 53 are arranged on the switch body 54, two input ends 51 and one signal end 52 are arranged on the switch body 54, the input end 51 is connected with the signal end 52 through the test bench, the input end 51 is used for receiving an external power supply or a test signal, and the signal end 52 is responsible for transmitting test data or a feedback signal, the input end 51 and the signal end 52 are arranged adjacent to each other, and the near-centralized layout can avoid noise introduced by long-distance wiring.

[0050] The switch connection matching part includes M3 connecting holes 55, and the six M3 connecting holes 55 are arranged at equal intervals at four corners and a middle region of the switch assembly 5, and are adaptively connected with threaded mounting holes 22 of the supporting bottom plate 21 through M3 connecting holes 55 and connecting screws, so that the stability of the test tool structure is enhanced.

[0051] In this embodiment, the test switch 53 is controlled to turn on and turn off a single channel, and can be applied to step-by-step testing or fault diagnosis, so that wiring is convenient, and subsequent testing is facilitated.

[0052] Furthermore, in this embodiment, the on-board region of the PCB test board is divided into a test function area and a connection function area, the connection function area is provided with conductive contact pieces connected with the switch assembly, the connection function area of the PCB test board is connected with test tool contacts through the conductive contact pieces, the arrangement mode of the conductive contact pieces is staggered double-row structure, and each row includes a plurality of contacts.

[0053] The PCB test board is fixedly arranged on the connecting groove 32, is stably clamped through the PCB clamping jaw structure 43, the conductive contact pieces reserved on the PCB test board are connected with the switch of the test tool, the size of the PCB test board is fixed, the conductive contact pieces connected with the tool are reserved, and the test machine is connected for testing, so that high precision and stability of product measurement are realized.

[0054] The utility model provides a simple structure, easy operation's general static test frock for IGBT module in semi -product or finished product measurement time's data measurement, also can be adapted to adjust and use data measurement of other circuit board.

[0055] In the description of the utility model, it is understood that the orientation or positional relationship indicated by such terms as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0056] In addition, in the description of the present application, the meaning of "a plurality of" is two or more than two, unless otherwise explicitly and specifically limited.

[0057] The above only is the preferred embodiment of the present application, and does not limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A universal static testing fixture, comprising a main body of the testing fixture, wherein a base plate assembly and a testing assembly are disposed on the main body of the testing fixture, and the testing assembly is connected to the base plate assembly, characterized in that, The test assembly includes a test board fixing part and a test board wiring part. The test board fixing part is provided with a slot structure and a PCB test board that matches and connects to the slot structure. A switch assembly is connected to the base plate assembly, and the switch assembly is connected to the conductive contact of the PCB test board.

2. The universal static testing fixture according to claim 1, characterized in that, The base plate assembly includes a supporting base plate, which includes a switch connection part and a product positioning part connected to the switch assembly. The switch connection part includes a threaded mounting hole, and the product positioning part is provided with a positioning hole.

3. The universal static testing fixture according to claim 1, characterized in that, The test board fixing part includes a test board fixing plate, the slot structure is provided with a connecting slot, the connecting slot is arranged along the length direction of the test board fixing plate, and the connecting slot is an inner groove structure, and the side of the test board fixing plate is provided with a connecting part that connects to the test board wiring part.

4. A universal static testing fixture according to claim 3, characterized in that, The connecting slot is a straight groove structure, and both ends of the connecting slot are open structures. The vertical height of the connecting slot is 1.6mm-1.7mm.

5. A universal static testing fixture according to claim 3, characterized in that, The connecting slot is connected to an elastic buckle and a limiting block. The elastic buckle is made of polyurethane elastic material and its inner surface is provided with anti-slip texture.

6. The universal static testing fixture according to claim 1, characterized in that, The test board connection part includes a wiring circuit board, on which a plurality of wire connection holes are evenly distributed. The side of the wire connection hole is provided with a PCB clamp structure, and the end of the wiring circuit board is provided with a connection mating part that connects to the test board fixing part.

7. A universal static testing fixture according to claim 6, characterized in that, The PCB gripper structure is composed of several evenly spaced gripper units. Each gripper unit is an elastic gripping structure with a gripping space in the middle. The PCB gripper structure is arranged along the length of the wiring circuit board.

8. A universal static testing fixture according to claim 1, characterized in that, The switch assembly includes an input terminal, a signal terminal, and a test switch. The input terminal and the signal terminal are connected to the test bench. The test switch controls the single-channel conduction and cutoff. The switch assembly is also provided with a switch connection mating part that connects to the base plate assembly.

9. A universal static testing fixture according to claim 8, characterized in that, The switch assembly includes two input terminals and one signal terminal. The input terminals and the signal terminal are arranged adjacent to each other. The switch connection mating parts are evenly distributed in the four corners and the middle area of ​​the switch assembly.

10. A universal static testing fixture according to claim 1, characterized in that, The onboard area of ​​the PCB test board is divided into a test function area and a connection function area. The edge of the connection function area is provided with conductive contacts that are connected to the switch assembly. The conductive contacts are arranged in an alternating double-row structure, with each row containing several contacts.

Images