Multifunctional Electronic Device Testing Fixture

Abstract

The present invention discloses a multifunctional electronic device test fixture, which includes a housing. The housing includes a positioning table for supporting the electronic device. Pin jacks are provided on the insertion surface of the positioning table, and conductive terminals that cooperate with the pins are provided in the jacks. At least one conductive terminal is a movable terminal, and the movable terminal is slidably mounted on the housing along a first direction parallel to the insertion surface; each movable terminal corresponds to at least one positioning plug board. The positioning plug board includes a movable card slot corresponding to the position of the movable terminal and capable of being inserted and matched. A slot for inserting the positioning plug board is provided at the position of the housing corresponding to the movable terminal. Inserting the positioning plug board into the slot can make the movable terminal inserted into the corresponding movable card slot to position the position of the movable terminal in the first direction. Compared with the prior art, the present invention selects different specifications of positioning plug boards according to different specifications of electronic devices to fix the movable terminals at positions matching the pins of the electronic devices, can be applicable to different specifications of electronic devices, has strong versatility and is convenient to operate.

Description

Technical Field

[0001] The present invention relates to a test fixture for electronic devices, especially a fixture for functionally testing the pin insertion of electronic devices. Background Art

[0002] First, a transformer is a magnetic energy transmission component in a circuit. In circuit design, generally only its magnetic parameter characteristics such as inductance and coupling coefficient, as well as loss parameters, are considered. However, in order to better study the working state of the transformer under dynamic conditions, it is necessary to measure its dynamic characteristics. The coupling capacitance determined only by physical structure parameters such as the relative area of the windings and the insulation distance between the windings between the primary and secondary sides of the transformer is called the structural capacitance. And the capacitance that takes into account the influence of the winding potential distribution during the actual operation of the transformer and can reflect the suppression effect on common-mode conducted noise during the actual circuit operation is called the common-mode noise effective capacitance. Since the winding structure of the transformer is complex, it may contain a magnetic core, a bobbin, windings, a shielding layer, insulating tape, a retaining wall, etc. When evaluating its electromagnetic compatibility characteristics, the traditional method generally measures the size of its structural capacitance, and there is a large difference between this capacitance and the electromagnetic compatibility characteristics shown by the transformer during actual circuit operation.

[0003] The traditional method of using an LCR to measure the structural capacitance parameters between the primary and secondary windings of a transformer cannot effectively reflect the influence of the coil winding potential distribution and the shielding layer on common-mode noise and conducted radiation. It cannot ensure the effectiveness of quality control in this aspect of the transformer, cannot monitor in a timely and effective manner, and must be tested after the customer inserts the board into the machine. If there are quality abnormalities, it will bring immeasurable losses to the company and the customer. Therefore, a transformer coupling fixture has emerged.

[0004] However, there are currently a very large number of types of transformers, at least hundreds of them. In traditional transformer coupling fixtures, each type of transformer corresponds to a single coupling fixture and cannot be made universal. Not only can it not be made universal, but it also wastes too many resources.

[0005] Therefore, there is an urgent need for a highly versatile test fixture that can solve the above problems. Summary of the Invention

[0006] The object of the present invention is to provide a multifunctional test fixture for electronic devices, a test fixture for positioning and electrically connecting electronic devices with insertion pins, which can select the corresponding positioning plug board to fix the positions of its conductive terminals according to the specifications of the insertion pins of the electronic devices, and has strong versatility.

[0007] To achieve the above object, the present invention discloses a multi-functional electronic device test fixture, which includes a housing, a conductive terminal structure, a terminal positioning structure, and a detection interface. The housing includes a positioning table for supporting or fixing the electronic device. A plurality of insertion holes for inserting the pins of the electronic device are provided on the insertion surface of the positioning table facing the pins of the electronic device; the conductive terminal structure has a plurality of conductive terminals provided at positions corresponding to the insertion holes and capable of cooperating with the pins inserted into the insertion holes. At least one of the conductive terminals is a movable terminal. The movable terminal is slidably mounted on the housing along a first direction parallel to the insertion surface and can slide a preset distance along the first direction; the terminal positioning structure includes a positioning insertion plate. Each movable terminal corresponds to at least one positioning insertion plate. The positioning insertion plate includes a movable card slot corresponding to the position of the movable terminal and capable of being inserted and engaged to fix the position of the movable terminal in the first direction. A slot for inserting the positioning insertion plate is provided at a position on the housing different from the insertion surface and corresponding to the movable terminal. Inserting the positioning insertion plate into the slot can make the movable terminal inserted into the corresponding movable card slot to position the movable terminal in the first direction; the detection interface is used to electrically connect to a test device and is electrically connected to a plurality of the conductive terminals.

[0008] Compared with the prior art, based on the different pin spacings of different specifications in electronic devices, the present invention sets the conductive terminals corresponding to some pins or all pins as movable terminals according to the pins of different specifications of the electronic device, sets the direction of the pin spacing change as the first direction, and then slidably mounts the movable terminals on the housing of the fixture along the first direction. Make or obtain a positioning insertion plate that matches the pin specifications of the corresponding electronic device, and then fix the movable terminal at a position matching the pins in the first direction through the movable card slot on the positioning insertion plate, so that it is applicable to an electronic device of a certain specification. That is, the present invention can adjust the position of the movable terminal through positioning insertion plates with different relative positions of the movable card slots, so that the conductive terminals can adapt to the pins of electronic devices with different specifications, with strong versatility and convenient operation.

[0009] Preferably, each positioning insertion plate corresponds to one or more movable terminals; when a positioning insertion plate corresponds to one movable terminal, among the positioning insertion plates of different specifications corresponding to the movable terminal, the positions of the corresponding movable card slots in the first direction are different; when a positioning insertion plate corresponds to a plurality of movable terminals, among the positioning insertion plates of different specifications corresponding to the movable terminal, the distances between the corresponding movable card slots in the first direction are different or the positions in the first direction are different.

[0010] Preferably, at least one of the movable terminals and at least another conductive terminal are arranged in a row along the first direction to form a movable terminal row.

[0011] Preferably, all the conductive terminals are the movable terminals and are arranged in at least one row to form at least one row of movable terminal rows.

[0012] Preferably, all the conductive terminals are arranged in at least one row, and except for the middlemost conductive terminal in at least one row of conductive terminals, the other conductive terminals are movable terminals to form a movable terminal row. For example, the movable terminal row has an odd number of conductive terminals, the middlemost conductive terminal is a fixed terminal, and the other conductive terminals are movable terminals. A fixed terminal refers to a conductive terminal that does not slide relative to the housing in the first direction or a conductive terminal that does not need to be adjusted by the positioning plug board.

[0013] More preferably, one movable terminal row corresponds to at least two specifications of positioning plug boards. Slots for plugging and mating with all the conductive terminals on the corresponding movable terminal row are provided on the positioning plug board, and the slots on different specifications of positioning plug boards have different spacings. The slots for plugging and mating with the movable terminals are movable slots. It is convenient to operate, and there are multiple slots on the positioning plug board, with accurate positioning, and all the conductive terminals on the movable terminal row can be fixed, and the connection stability is strong. Among them, the slot spacings on the positioning plug boards with different specifications are different, including at least one different spacing, each adjacent spacing being different, and some spacings being different.

[0014] Specifically, if there are more than two rows of movable terminal rows, the corresponding slots for different rows of movable terminal rows are respectively provided on different sides of the housing.

[0015] Preferably, the plugging surface is a horizontal plane, the conductive terminals are longitudinally arranged in the vertical direction and vertically installed in the housing, the jacks are located at the tops of the conductive terminals, the slots are horizontally provided on the side surface of the housing, and the detection interface is electrically connected to the lower ends of the conductive terminals through a circuit board.

[0016] Specifically, one positioning plug board corresponds to one slot, and the slots are provided at different heights of the conductive terminals, which is convenient for adjustment and prevents operation errors.

[0017] More preferably, one movable terminal corresponds to M positioning plug boards, and a linkage component is provided between the M positioning plug boards and the housing, so that when one of the M positioning plug boards is inserted into the slot, the other M - 1 positioning plug boards pop out of the slot, which improves the simplicity of operation and further prevents operation errors.

[0018] Preferably, inside the housing on the plugging surface, there is a chute board. A plurality of sliding slots corresponding to the movable terminals one by one are provided on the chute board. The length of the sliding slot in the first direction is greater than the dimension of the conductive terminal in the first direction, and the conductive terminal is installed in the sliding slot and can slide along the first direction.

[0019] Preferably, the movable terminal is longitudinally arranged perpendicular to the plugging surface, and the movable terminal is convexly provided with protruding portions extending along at least two directions parallel to the plugging surface and capable of being stuck to the edge of the sliding groove. When the conductive terminal is installed in the sliding groove, the protruding portions are clamped with the sliding groove.

[0020] Preferably, the opening of the movable clamping groove opens to both sides along the first direction to form a guiding channel, so that the movable terminal extends into the movable clamping groove along the guiding channel, improving the convenience of adjustment.

[0021] Preferably, the conductive terminal is longitudinal and is formed by two conductive sheets arranged opposite to each other along the first direction. The front ends of the two conductive sheets are relatively opened along the first direction, and the rear ends of the conductive sheets are integrally formed or electrically connected together. The jack is arranged adjacent to the front end of the conductive terminal, so that the pins of the electronic device sequentially extend into the conductive terminal from the jack and the front end of the conductive sheet. This solution enables the present invention to be used for testing pins of different lengths without adjusting the distance between the conductive terminal and the jack.

[0022] Preferably, the electronic device is a transformer, the test fixture is a transformer coupling fixture, and several conductive terminals are arranged in two rows according to the primary terminals and secondary terminals of the transformer, and each row has at least one movable terminal.

[0023] Specifically, the two rows of conductive terminals are arranged opposite to each other on the plugging surface along a second direction perpendicular to the first direction, and the corresponding slots of the positioning plug board are correspondingly arranged on two opposite sides of the housing in the second direction. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of the multifunctional electronic device test fixture of the present invention from one angle.

[0025] Figure 2 is a schematic structural diagram of the multifunctional electronic device test fixture of the present invention from another angle.

[0026] Figure 3 is an exploded schematic diagram of the multifunctional electronic device test fixture of the present invention.

[0027] Figure 4 is a connection schematic diagram of the conductive terminal and the chute plate of the present invention.

[0028] Figure 5 is a cross-sectional view of the multifunctional electronic device test fixture of the present invention transversely cut along a positioning plug board.

[0029] Figure 6 is a schematic structural diagram of the positioning plug board of the invention.

[0030] Figure 7a is Figure 5 An enlarged schematic view of part A in

[0031] Figure 7b is Figure 5 An enlarged schematic view of part B in

[0032] Figure 8 is a sectional view taken longitudinally along a positioning plug board in an embodiment of the multi-functional electronic device test fixture of the present invention.

[0033] Figure 9 is a sectional view taken longitudinally along a positioning plug board in another embodiment of the multi-functional electronic device test fixture of the present invention. Detailed implementation manners

[0034] To describe in detail the technical content, structural features, achieved objectives and effects of the present invention, the following is a detailed description in conjunction with the embodiments and with reference to the accompanying drawings.

[0035] Referring to Figures 1 to 3 , the present invention discloses a multi-functional electronic device test fixture 100, which includes a housing 10, a conductive terminal structure, a terminal positioning structure and a detection interface 40. The housing 10 includes a positioning table 11 for supporting or fixing the electronic device. A plurality of insertion holes 112 for inserting the pins of the electronic device are formed on the insertion surface 111 of the positioning table 11 facing the pins of the electronic device. The conductive terminal structure has a plurality of conductive terminals 20 formed at positions corresponding to the insertion holes 112 and adapted to cooperate with the pins inserted into the insertion holes 112. The terminal positioning structure is used to adjust the positions of the conductive terminals 20. The detection interface 40 is used to electrically connect to a test device and is electrically connected to a plurality of the conductive terminals 20.

[0036] In this embodiment, the positioning table 11 is a support plate. Of course, the positioning table 11 can also be of other structures, such as forming a positioning groove, etc.

[0037] Referring to Figure 3 , the test fixture 100 further includes a circuit board 41. The detection interface 40 is electrically connected to the conductive terminals 20 through the circuit board 41.

[0038] Referring to Figures 3 to 8, wherein at least one of the conductive terminals 20 is a movable terminal 21. The movable terminal 21 is slidably mounted on the housing 10 along a first direction parallel to the insertion surface 111 and can slide a preset distance along the first direction. The terminal positioning structure includes a positioning plug board 30. Each movable terminal 21 corresponds to at least one positioning plug board 30. The positioning plug board 30 includes a movable slot 31 corresponding to the position of the movable terminal 21 and capable of being inserted and matched to fix the position of the movable terminal 21 in the first direction. A slot 13 for inserting the positioning plug board 30 is formed in the housing 10 at a position corresponding to the movable terminal 21 and different from the insertion surface 111. Inserting the positioning plug board 30 into the slot 13 can make the movable terminal 21 inserted into the corresponding movable slot 31 to position the movable terminal 21 in the first direction.

[0039] Among them, the slot 13 can be formed on other surfaces of the housing 10 different from the insertion surface 111, such as the two side surfaces and the bottom surface.

[0040] Among them, in the test fixture 100, one movable terminal 21 corresponds to at least one positioning plug board 30. The positioning plug board 30 is inserted into the slot 13 along a direction perpendicular to the first direction and fixes the position of the movable terminal 21 in the first direction. When it is necessary to be applicable to other specifications of electronic devices, corresponding positioning plug boards 30 can be made according to the positions of the pins on the electronic devices to adjust the position of the movable terminal 21 in the first direction so that the test fixture 100 is applicable to new specifications of electronic devices. Of course, multiple specifications of positioning plug boards 30 can also be preset and directly adjusted.

[0041] Among them, one positioning plug board 30 can correspond to one movable terminal 21 or multiple movable terminals 21. The same movable terminal corresponds to multiple specifications of positioning plug boards 30. When one positioning plug board 30 corresponds to one movable terminal 21, among the positioning plug boards 30 with different specifications corresponding to the movable terminal 21, the corresponding positions of the corresponding movable slots 31 in the first direction are different. When one positioning plug board 30 corresponds to multiple movable terminals 21, among the positioning plug boards 30 with different specifications corresponding to the movable terminals 21, the distances between the corresponding movable slots 31 in the first direction are different. The different distances include at least one different distance, each adjacent distance being different, and some distances being different.

[0042] During operation, the unnecessary positioning plug boards 30 are withdrawn from the slot 13, and the required positioning plug boards 30 are inserted into the slot 13, so that the position adjustment of the movable terminal 21 can be completed to make it applicable to the pins of specific electronic devices.

[0043] Among them, the movable terminal 21 is electrically connected to the circuit board 41 through a wire. Of course, the movable terminal 21 can also be electrically connected to the circuit board 41 through a sliding interface or other flexible circuit boards.

[0044] Reference Figure 3 and Figure 4 Figure 4 , a chute plate 12 is provided inside the housing 10 on the insertion surface 111, and a plurality of sliding grooves 121 corresponding to the movable terminals 21 one by one are formed on the chute plate 12. The length of the sliding groove 121 in the first direction is greater than the dimension of the conductive terminal 20 in the first direction. The conductive terminal 20 is installed in the sliding groove 121 and can slide along the first direction. Among them, the jack 112 corresponds to the position of the sliding groove 121, the length in the first direction corresponds, or corresponds to the end opening width of the movable terminal 21.

[0045] Reference Figure 4 and Figure 8 Figure 8 , in this embodiment, the movable terminal 21 is longitudinally arranged along a direction perpendicular to the insertion surface 111, and at least two protrusions 201 extending along directions parallel to the insertion surface 111 and capable of being stuck to the edge of the sliding groove 121 are convexly provided on the movable terminal 21. When the conductive terminal 20 is installed in the sliding groove 121, the protrusion 201 is clamped with the sliding groove 121, so that the movable terminal 21 is hung on the sliding groove 121 and can slide along the first direction of the sliding groove 121.

[0046] Reference Figure 4 and Figure 8 Figure 8 , the conductive terminal 20 is longitudinal and is formed by two conductive sheets 202 arranged opposite to each other along the first direction. The front ends of the two conductive sheets 202 are relatively opened along the first direction to form a guiding jack 203, and the rear ends of the conductive sheets 202 are integrally formed. Of course, the rear ends of the conductive sheets 202 can also be electrically connected together. The jack 112 is arranged near the front end of the conductive terminal 20, so that the pins of the electronic device sequentially extend into the conductive terminal 20 from the jack 112 and the front end of the conductive sheet. This solution enables the present invention to be used for testing pins of different lengths without adjusting the distance between the conductive terminal 20 and the jack 112.

[0047] In this embodiment, the main bodies of the two conductive sheets 202 are straight strips, so that an equal-width jack is formed between the two conductive sheets 202. In other embodiments, the opposite sides of the two conductive sheets 202 can also gradually approach or be of other shapes to form jacks of other shapes. In this embodiment, the conductive terminal 20 is integrally formed of pure conductive material. Of course, the structure of the conductive terminal 20 is not limited to this, and the conductive terminal 20 can also be composed of an insulating block and one or more conductive sheets embedded in the insulating block.

[0048] In this embodiment, the insertion surface 111 is a horizontal plane, the conductive terminal 20 is longitudinally arranged in the vertical direction and vertically installed in the housing 10, the jack 112 is located at the top end of the conductive terminal 20, the slot 13 is horizontally opened on the side surface of the housing 10, and the detection interface 40 is electrically connected to the lower end of the conductive terminal 20 through a circuit board. Wherein, the first direction is the left-right direction. Of course, the insertion surface 11 is not limited to a horizontal plane, and the first direction is not limited to the left-right direction. The above horizontal plane, vertical direction, horizontal direction, side surface, top end and lower end can be descriptions of relative position relationships.

[0049] In this embodiment, one movable terminal corresponds to one pin of an electrical device. In other embodiments, one movable terminal may correspond to multiple pins.

[0050] Wherein, at least one of the movable terminals 21 and at least one of the other conductive terminals 20 are arranged in a row along the first direction to form a movable terminal row 200. In this embodiment, the conductive terminals 20 are divided into two rows, and two movable terminal rows 200 are formed. Figure 1 What is shown in is the first row of movable terminal rows 200, Figure 2 What is shown is the second row of movable terminal rows.

[0051] Of course, the conductive terminals 20 can also be arranged in one row or three rows, not limited to two rows. Each row of movable terminal rows 200 can be a straight row, that is, the same row of movable terminal rows 200 has the same position in the second direction parallel to the plane where the insertion surface 211 is located and perpendicular to the first direction (as Figure 7a described), of course, each row of movable terminal rows 200 can also have a certain offset in the second direction (as Figure 7b described. In the second movable terminal row 200, there is a small offset in the second direction between two of the movable terminals 21 and the other two movable terminals).

[0052] Wherein, the arrangement of the conductive terminals 20 is restricted by the arrangement of the insertion pins of the electronic device to be detected. The arrangement of the movable terminals 21 is affected by the position change of the insertion pins with large size changes in different specifications of electronic devices or the position of the insertion pins that need to adjust the position in the first direction according to design requirements. It is not limited to the above embodiments. In some electronic devices, if only the position of one conductive terminal needs to be adjusted in the first direction, there is only one movable terminal in the conductive terminals. This movable terminal can be independently arranged and does not form a movable terminal row 200 with other conductive terminals, or it can form a movable terminal row with other conductive terminals.

[0053] Refer to Figure 3, one of the movable terminal blocks 200 corresponds to at least two specifications of positioning inserts 30. Among them, the slot pitches on the positioning inserts 30 with different specifications are different, including at least one different pitch, each adjacent pitch being different, and some pitches being different.

[0054] In this embodiment, Figure 7a the movable terminal block 200 in corresponds to three specifications of positioning inserts 30. Among the three positioning inserts 30, the pitch of each adjacent slot is different.

[0055] Figure 7b the movable terminal block 200 in corresponds to two specifications of positioning inserts 30. Among the two positioning inserts 30, the pitches of some adjacent slots are different.

[0056] Of course, the number of specifications of the positioning inserts 30 corresponding to the movable terminal block 200 can be designed according to actual needs, not limited to two or three, and can also be other values more than two.

[0057] Refer to Figure 7a and Figure 7b , in this embodiment, the positioning insert 30 is provided with slots that are inserted and mated with all the conductive terminals 20 on the corresponding movable terminal block 200 so that the slots with different pitches are provided on the positioning inserts 30 with different specifications, and the slots inserted and mated with the movable terminal 21 are movable slots 31.

[0058] Refer to Figure 4 and Figure 9 , in order to facilitate the insertion of the movable terminal 21 into the movable slot 31, the opening of the movable slot 31 expands to both sides along the first direction to form a guiding channel 311, so that the movable terminal 21 can extend into the movable slot 31 along the guiding channel 311.

[0059] Refer to Figure 1 and Figure 8 , among the five conductive terminals 20 of the first movable terminal block 200, all the conductive terminals 20 are sliding terminals 21. The different specifications of the positioning inserts 30 corresponding to the first movable terminal block 200 are row pitch inserts with different slot pitches. Of course, the number of conductive terminals of the first movable terminal block 200 is not limited to an odd number or five.

[0060] In this embodiment, the conductive terminal 20 in the middle of the first movable terminal row 200 is the reference terminal. Among the corresponding three positioning plug boards 30, the positions of the movable card slots 31 corresponding to the conductive terminal 20 in the middle in the first direction are the same (the reference terminal can also be regarded as a fixed terminal). Of course, other conductive terminals 20 can also be set as the reference terminal. With the position of this reference terminal unchanged, the relative positions of other conductive terminals are adjusted. This reference terminal can be a conductive terminal on the outermost side, or the second conductive terminal, etc. Among them, the conductive terminal 20 of the reference terminal can be directly set as a fixed terminal. See Figure 9 .

[0061] Reference Figure 2 , the second movable terminal row 200 on its rear side has an even number of conductive terminals, and all the conductive terminals 20 are sliding terminals 21. The positioning plug boards 30 of different specifications corresponding to the second movable terminal row 200 are row pitch plug boards with different slot pitches. Of course, the number of conductive terminals of the second movable terminal row 200 is not limited to an even number or four. In this embodiment, the two conductive terminals 20 in the middle of the second movable terminal row 200 are the reference terminals. Among the corresponding two positioning plug boards 30, the positions of the movable card slots 31 corresponding to the two conductive terminals 20 in the middle in the first direction are the same. Of course, other conductive terminals 20 can also be set as the reference terminal. With the position of this reference terminal unchanged, the relative positions of other conductive terminals are adjusted. This reference terminal can be a conductive terminal on the outermost side, or the second conductive terminal, etc. Among them, the conductive terminal 20 of the reference terminal can be directly set as a fixed terminal.

[0062] Reference Figure 1 , the three positioning plug boards 30 corresponding to the first movable terminal row 200 on its front side are respectively a first slot pitch plug board with a slot pitch of 3.0 mm between adjacent movable card slots 31, a second slot pitch plug board with a slot pitch of 2.8 mm between adjacent movable card slots 31, and a third slot pitch plug board with a slot pitch of 2.5 mm between adjacent movable card slots. Reference Figure 2 , the two positioning plug boards 30 corresponding to the second movable terminal row 200 on its rear side are respectively a fourth slot pitch plug board with a slot pitch of 3.5 mm between adjacent movable card slots 31 and a fifth slot pitch plug board with a slot pitch of 3.0 mm between adjacent movable card slots.

[0063] Different from this embodiment, reference Figure 9, in the first active terminal row 200 having an odd number of conductive terminals 21, among which, except for the middle conductive terminal 20 being a fixed terminal 22, the other conductive terminals 20 are active terminals 21. The chute plate 12 is provided with an installation groove 122 for installing the fixed terminal 22 at a position corresponding to the fixed terminal 22, and the installation groove 122 matches the size of the fixed terminal 22, so that the fixed terminal 22 cannot slide in the installation groove 122 along the first direction. The card slot corresponding to the fixed terminal 22 is a fixed card slot 32, and the card slot corresponding to the active terminal 21 is an active card slot 31. The positioning plug boards 30 of different specifications corresponding to the first active terminal row 200 are row pitch plug boards with different slot pitches. Of course, the number of conductive terminals of the first active terminal row 200 is not limited to an odd number or five. Among the positioning plug boards 30 of multiple specifications matching the active terminal 21, the fixed card slots 32 are located at the same position in the first direction.

[0064] Among them, the connection method of the fixed terminal 22 to the circuit board 41 is the same as that of the active terminal 21, and it can also be directly welded to the circuit board 41 by welding.

[0065] Among them, the insertion direction of the positioning plug board 30 is perpendicular to the sliding direction of the active terminals in the corresponding active terminal row 200, that is, the positioning plug board 30 is inserted into the active terminal row 200 along the side surface opposite to the second direction towards the second direction.

[0066] Reference Figure 3 and Figure 5 , the slots 13 corresponding to different rows of active terminal rows 200 are respectively arranged on different side surfaces of the housing 10. The slots 13 corresponding to the two active terminal rows 200 are respectively arranged on two opposite side surfaces of the housing corresponding to the second direction, and the two active terminal rows 200 are respectively inserted into the slots 13 from the two opposite side surfaces. In this embodiment, the slots 13 corresponding to the two rows of active terminal rows 200 are arranged on two opposite side surfaces of the housing 10. Of course, the slots 13 can also be arranged on the bottom surface, and the positioning plug board 30 is correspondingly inserted into the slot 13 from the bottom surface. At this time, there is an anti-slip and anti-disengagement clamping structure between the positioning plug board 30 and the slot 13 or the housing 10.

[0067] Specifically, one positioning plug board 30 corresponds to one slot 13, and the slots 13 corresponding to different positioning plug boards 30 are opened at different heights of the conductive terminal 20, which is convenient for adjustment and prevents operation errors.

[0068] In this embodiment, all the movable terminals 21 are arranged along the first direction. Based on this embodiment, in another embodiment, if there are other directional changes or adjustments for some pins, or if there is a terminal row arranged in another direction that needs to be adjusted. For example, the electronic device further includes a row of movable terminal rows arranged along a second direction that is parallel to the insertion surface 111 and perpendicular to the first direction. If the pitch between the terminals in this movable terminal row needs to be adjusted, then the movable terminals slide along the second direction on the housing 10. The corresponding positioning plug board has movable slots that correspond to the positions of the movable terminals and can be inserted and engaged to fix the positions of the movable terminals in the second direction. The corresponding slots of the positioning plug board are inserted along the first direction from the side surface of the housing 10 that is opposite to the first direction.

[0069] Preferably, one movable terminal 21 corresponds to M positioning plug boards 30, and a linkage component is provided between the M positioning plug boards 30 and the housing 10, so that when one of the M positioning plug boards 30 is inserted into the slot 13, the other M - 1 positioning plug boards 30 pop out of the slot 13, improving the simplicity of the operation. When replacing the positioning plug board 30, there is no need to pull out the original positioning plug board 30. M is an integer greater than or equal to 2.

[0070] For example, referring to Figure 1 , among the three positioning plug boards 30 corresponding to the first movable terminal row 200, when the uppermost positioning plug board is inserted into the slot 13 (at the insertion position of the slot 13) to cooperate with adjusting the position of the movable terminals 21 in the first movable terminal row 200, the other two positioning plug boards 30 withdraw from the slot 13 (at the withdrawal position of the slot 13) to disengage from the first movable terminal row 200. If any one of the other two positioning plug boards 30 is inserted into the slot 13, the uppermost positioning plug board 30 will withdraw from the slot 13 under the cooperation of the linkage component.

[0071] In this embodiment, the electronic device is a transformer, and the test fixture 100 is a transformer coupling fixture. The plurality of conductive terminals 20 are arranged in two rows according to the primary terminals and secondary terminals of the transformer, respectively. Of course, the electronic device can also be other devices, and the test fixture can also be other fixtures, not limited to the transformer coupling fixture. In this embodiment, the first movable terminal row 200 is the primary terminal row of the transformer (corresponding to the primary terminals), and the corresponding positioning plug board 30 is the primary side positioning plug board. The second movable terminal row 200 is the secondary terminal row of the transformer (corresponding to the secondary terminals), and the corresponding positioning plug board 30 is the secondary side positioning plug board. The primary terminal row of the transformer and the secondary terminal row of the transformer are arranged opposite to each other on the plugging surface 111 along a second direction perpendicular to the first direction. The slots 13 corresponding to the primary side positioning plug board and the secondary side positioning plug board are opened on two opposite sides of the housing 11 in the second direction. The primary side positioning plug board and the secondary side positioning plug board are inserted into the primary terminal row of the transformer and the secondary terminal row of the transformer along the second direction through the slots 13 on the two opposite sides, respectively.

[0072] Among them, if the specifications of the electronic device change and the existing positioning plug boards 30 in the slots 13 cannot meet the requirements, new positioning plug boards can be made according to the needs. Then, the less frequently used positioning plug boards 30 are pulled out, and the new positioning plug boards 30 are inserted into the corresponding slots 13.

[0073] During operation, select the positioning plug board 30 that matches the transformer to be detected, and insert the required positioning plug board 30 into the slot 13 (insert the corresponding primary positioning plug board into the corresponding slot 13 and insert the corresponding secondary positioning plug board into the corresponding slot 13). The inserted positioning plug board 30 adjusts the position of the corresponding movable terminal 21 in the first direction to match the pins of the transformer, completing the debugging of the test fixture 100.

[0074] The output interface of the signal transmitter and the input interface of the signal receiver are respectively connected to the detection interface 40 of the debugged test fixture 100. Then, the transformer to be detected is plugged into the plugging hole 111 of the positioning table 11. The pins of the transformer pass through the plugging hole 111 and the guiding jack 203 and enter the conductive terminal 20, and are electrically connected to the conductive terminal 20. Through the conductive terminal 20 and the circuit board 41, they are connected to the corresponding detection interface 40, so that the output interface of the signal transmitter is connected to the power supply end of the primary winding of the transformer, and the input interface of the signal receiver is connected to the power supply end of the output winding of the transformer. Turn on the signal transmitter and the signal receiver to perform the coupling detection of the transformer.

[0075] If the transformer model changes, turn off the signal transmitter and the signal receiver. Then, directly insert the primary positioning plug board and the secondary positioning plug board that match the changed transformer model into the corresponding slots 13 respectively, and the original primary positioning plug board and secondary positioning plug board pop out, and the debugging of the test fixture 100 can be completed quickly and conveniently.

[0076] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of rights of the present invention cannot be limited thereby. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A multifunctional electronic device test fixture, characterized in that: It includes: A housing, including a positioning table for supporting or fixing an electronic device, and a plurality of insertion holes for inserting the pins of the electronic device are provided on the insertion surface of the positioning table facing the pins of the electronic device; A conductive terminal structure, having a plurality of conductive terminals provided at corresponding positions of the insertion holes and capable of cooperating with the pins inserted into the insertion holes, wherein at least one of the conductive terminals is a movable terminal, and the movable terminal is slidably mounted on the housing along a first direction parallel to the insertion surface and can slide a preset distance along the first direction; A terminal positioning structure, including a positioning plug board, each movable terminal corresponds to at least one positioning plug board, the positioning plug board includes a movable card slot corresponding to the position of the movable terminal and capable of being inserted and cooperated to fix the position of the movable terminal in the first direction, and a slot for inserting the positioning plug board is provided on the housing at a position corresponding to the movable terminal and different from the insertion surface. Inserting the positioning plug board into the slot can make the movable terminal inserted into the corresponding movable card slot to position the position of the movable terminal in the first direction; A detection interface, used for electrically connecting to a test device and electrically connecting to a plurality of the conductive terminals; Each positioning plug board corresponds to one or more movable terminals; when a positioning plug board corresponds to one movable terminal, among the positioning plug boards of different specifications corresponding to this movable terminal, the positions of the corresponding movable card slots in the first direction are different; when a positioning plug board corresponds to a plurality of movable terminals, among the positioning plug boards of different specifications corresponding to these movable terminals, the distances between the corresponding movable card slots in the first direction are different or the positions in the first direction are different; The insertion surface is a horizontal plane, the conductive terminals are longitudinally arranged in the vertical direction and vertically installed in the housing, the insertion holes are located at the top ends of the conductive terminals, the slots are horizontally opened on the side surface of the housing, and the detection interface is electrically connected to the lower ends of the conductive terminals through a circuit board.

2. The multifunctional electronic device test fixture according to claim 1, characterized in that: At least one of the movable terminals and at least another conductive terminal are arranged in a row along the first direction to form a movable terminal row; or all the conductive terminals are the movable terminals and are arranged in at least one row to form at least one row of movable terminal rows; All the conductive terminals are arranged in at least one row, and in at least one row of conductive terminals, except for the middlemost conductive terminal, other conductive terminals are all movable terminals to form a movable terminal row.

3. The multifunctional electronic device test fixture according to claim 2, characterized in that: One movable terminal row corresponds to at least two specifications of positioning plug boards, the positioning plug boards are provided with card slots for inserting and cooperating with all the conductive terminals on the corresponding movable terminal row, and the card slots with different spacings are provided on the positioning plug boards of different specifications, and the card slots for inserting and cooperating with the movable terminals are movable card slots.

4. The multifunctional electronic device test fixture according to claim 1, characterized in that: One of the positioning inserts corresponds to one of the slots, and the slots of the positioning inserts corresponding to the same movable terminal are opened at different heights of the conductive terminal.

5. The multi-functional electronic device test fixture according to claim 1, characterized in that: On the inner side of the plugging surface of the housing, there is a chute plate, and a number of sliding grooves corresponding one by one to the movable terminals are opened on the chute plate. The length of the sliding groove in the first direction is greater than the size of the conductive terminal in the first direction. The movable terminal is longitudinally arranged along a direction perpendicular to the plugging surface, and at least two protrusions extending along directions parallel to the plugging surface are protruded on the movable terminal and can be stuck on the edge of the sliding groove. The conductive terminal is installed in the sliding groove and the protrusion is stuck with the sliding groove, so that the conductive terminal slides in the sliding groove along the first direction.

6. The multi-functional electronic device test fixture according to claim 1, characterized in that: The opening of the movable card slot opens to both sides along the first direction to form a guiding channel, so that the movable terminal extends into the movable card slot along the guiding channel.

7. The multi-functional electronic device test fixture according to claim 1, characterized in that: The conductive terminal is longitudinal and is formed by two conductive sheets arranged opposite to each other along the first direction. The front ends of the two conductive sheets are relatively opened along the first direction, and the rear ends of the conductive sheets are integrally formed or electrically connected together. The pins of the electronic device sequentially extend into the conductive terminal from the jack and the front end of the conductive sheet.

8. The multi-functional electronic device test fixture according to claim 1 or 3, characterized in that: The electronic device is a transformer, the test fixture is a transformer coupling fixture, and a number of the conductive terminals are arranged in two rows according to the primary terminals and secondary terminals of the transformer, and there is at least one movable terminal in each row.

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