A test tool, a test system and a power-on test method

Abstract

The present invention provides a test fixture, a test system and a power-on test method, which relate to the technical field of test equipment, and solve the technical problems that the wiring fixture cannot adjust the power-on position, has many types, is difficult to manage, and is easy to use incorrectly. The test fixture includes a fixture body, at least one conductor arranged on the fixture body and electrically connected to the wiring board, at least one wiring member connected to each potential of the power supply, and a potential switching component that is transmission-connected to the wiring member and the conductor to control different wiring members, different conductors and wiring boards to form electrical connections in sequence, thereby forming an adjustment combination of multiple power-on potential sequences of the test fixture; the test system includes a control system and a test fixture electrically connected to the control system; the power-on test method includes information entry, model identification, potential switching, power-on test, and reset. The present invention is used for power-on testing of equipment, can realize automatic potential switching, and is applicable to a variety of wiring boards.

Description

Technical Field

[0001] The present invention relates to the technical field of testing equipment, and in particular to a testing tool, a testing system and a power-on testing method. Background Art

[0002] At present, electrical equipment and household appliances must be powered on and tested in the factory, mainly to detect whether the performance of the whole machine is normal. Only after passing the power-on performance test in the factory can the product flow into the post-process and market sales. When the air conditioner is powered on, the corresponding special quick wiring tool is manually connected to the air conditioner's wiring board. Because different models of air conditioners have different wiring boards, the selected special quick wiring tool will also be different. That is, different wiring boards require different wiring tools to meet the test power-on requirements. There are mainly the following problems:

[0003] (1) There are many types of terminal blocks, and the wiring potential sequence is different; the wiring tool cannot adjust the power-on potential and cannot be adjusted according to the type of terminal block, resulting in a large number of corresponding types of wiring tools, which is not only costly and difficult to manage, but also often used incorrectly;

[0004] (2) Depending on the type of wiring board, it is necessary to manually switch the wiring tooling, which reduces production efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a test tool, a test system and a power-on test method to solve the technical problems in the prior art that the wiring tool cannot adjust the power-on position, has many types, is difficult to manage, and is easy to use incorrectly.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A test fixture provided by the present invention is used to connect to a terminal block of an electrical device for power-on testing, comprising a fixture body, at least one conductor arranged on the fixture body and electrically connected to the terminal block, at least one wiring member connected to each potential of a power supply, and a potential switching component that is transmission-connected to both the wiring member and the conductor to control different wiring members, different conductors and the terminal block to form electrical connections in sequence, thereby forming an adjustment combination of multiple power-on potential sequences of the test fixture.

[0008] As a further improvement of the present invention, the potential switching assembly includes a support member, a push member, a first adjustment module, a second adjustment module, and a third adjustment module. A plurality of track grooves are arranged through the support member, and all of the wiring members are movably arranged in the plurality of track grooves respectively. One end of the wiring member is electrically connected to the power supply through a power line, and the other end is conductively connected to the push member; the first adjustment module is arranged on the tooling body, and the second adjustment module is arranged on the first adjustment module, and can move in a first direction under the drive of the first adjustment module; the third adjustment module is arranged on the second adjustment module, and can move in a second direction under the drive of the second adjustment module; the third adjustment module can move in a third direction in the direction of approaching or moving away from the wiring member.

[0009] As a further improvement of the present invention, the track groove includes a horizontal groove and a vertical groove, the vertical grooves are multiple in number and are arranged in parallel and at intervals, all the conductors are arranged one by one above one end of all the vertical grooves; the horizontal groove is arranged perpendicular to the vertical grooves and connects all the vertical grooves in sequence; the wiring member is located at the other end of the vertical groove in the initial state.

[0010] As a further improvement of the present invention, the support member includes a first support plate and a second support plate which are stacked, and the first support plate and the second support plate are respectively provided with positioning grooves with specifications larger than the track groove on opposite sides, and the wiring member is provided with a positioning boss which is adapted to the specifications of the positioning groove.

[0011] As a further improvement of the present invention, the first adjusting module includes a first motor, a first transmission gear group, a first screw rod, a first connecting block, a sliding rod and a second connecting block. The first screw rod and the sliding rod are arranged side by side at both ends of the second adjusting module. The first connecting block is screwed on the first screw rod, and the second connecting block is sleeved on the sliding rod. The second adjusting module is connected to both the first connecting block and the second connecting block, and the first motor is transmission-connected to the first screw rod through the first transmission gear group.

[0012] As a further improvement of the present invention, the second adjusting module includes a second motor, a second screw rod, a third connecting block, and a fixed limit piece; the two ends of the fixed limit piece are fixed on the first connecting block and the second connecting block, the second screw rod is rotatably arranged in the fixed limit piece, the second motor is transmission-connected to the second screw rod, the third connecting block is screwed on the second screw rod, and one end passes through the through opening of the fixed limit piece and is connected to the third adjusting module.

[0013] As a further improvement of the present invention, the second adjustment module further includes a second transmission gear set arranged between the second motor and the second screw rod.

[0014] As a further improvement of the present invention, the third adjustment module includes a mounting seat, a telescopic member and a fixed column member arranged in sequence, the mounting seat is installed on the third connecting block, the telescopic member can control the telescopic movement of the fixed column member, and the fixed column member can be connected to the wiring member through a limiting structure when extended.

[0015] As a further improvement of the present invention, the limiting structure includes a hemispherical limiting portion arranged on the top of the wiring member and a limiting groove arranged on the bottom of the fixed column member and matched with the specifications of the limiting portion.

[0016] As a further improvement of the present invention, the telescopic member includes a push-pull electromagnet or a micro cylinder.

[0017] As a further improvement of the present invention, the pushing member includes a V-shaped spring sheet, and the contact end between the conductor and the spring sheet is an inclined structure adapted to the inclination direction of the spring sheet.

[0018] As a further improvement of the present invention, the tool body includes a shell and a cover plate covering an opening of the shell, and a window for the conductor to enter and exit is opened on the shell.

[0019] A test system provided by the present invention comprises a control system and the test tool electrically connected to the control system.

[0020] As a further improvement of the present invention, the control system stores information of wiring boards of different models and power-on potential sequencing information corresponding to wiring boards of different models.

[0021] The present invention provides a power-on test method, which uses the test system to perform a power-on test on a device under test, and specifically includes the following steps:

[0022] Step 100, information entry: before use, all the machine type wiring board information and wiring board power-on potential sorting information are preset in the control system for storage;

[0023] Step 200, model identification, before the power-on test, identify the wiring position status of the wiring board of the device under test, and identify the wiring board information corresponding to the paired device by scanning the model barcode or manually selecting the model. After the pairing is successfully identified, read the power-on potential sorting information corresponding to the wiring board pre-stored therein according to the scanned code content, and send a control signal to the potential switching component in the test tooling;

[0024] Step 300, potential switching, the potential switching component completes the adjustment combination of the potential sequence under the control of the control signal, so that each required wiring member moves to the bottom of the corresponding conductor, and pushes the conductor to extend from the tool body to achieve electrical conduction with the wiring board, thereby completing the required potential switching;

[0025] Step 400, power-on test, when all required wiring parts, conductors and wiring boards are electrically connected, the control system performs conduction state identification and judgment, and when all conduction is successful, normal power-on can be performed for detection, and power-on starts to perform power-on test;

[0026] Step 500, reset. After the power-on test is completed, the control system controls the potential switching component to move in the opposite direction of step 300, so that all the wiring components are reset to the initial position, waiting for the next potential switching and power-on test.

[0027] As a further improvement of the present invention, the power-on potential sequencing information of the wiring board in step 100 includes the required walking tracks of the wiring components to complete the potential sequencing and the action steps of the potential switching components corresponding to each walking track.

[0028] As a further improvement of the present invention, the preset process of the power-on potential sorting information includes the following specific steps:

[0029] Step 600, read the pre-entered wiring board information, obtain the potential sorting of the wiring board, generate the required number and position of wiring parts information, manually control the potential switching component to move forward, backward, left and right and reach the wiring parts, manually control the potential switching component to move up and down to approach the wiring parts and contact with them, manually control the potential switching component to move forward, backward, left and right to drive the wiring parts to move, and reach the required conductor to make the wiring parts electrically conductive and contact with the conductor, repeat the above actions in sequence, complete the sorting process of all required wiring parts moving to the corresponding conductors, the control system records the walking trajectories of all the above wiring parts and the corresponding action data of the potential switching components, generates a set of power-on potential sorting information and stores it; according to the above steps, the power-on potential sorting information generation and storage process of all types of wiring boards is completed, and all power-on potential sorting information is encoded and distinguished, waiting for the control system to call and identify.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The test tool provided by the present invention can realize automatic potential switching, realize free combination and sorting of power supply ports of power-on devices on wiring boards, and automatically switch lines according to different air-conditioning wiring boards. It is not only simple to operate and realize automatic switching process, but also does not require manual potential sorting, thus reducing labor costs and improving work efficiency. The test tool provided by the present invention is a universal power-on test tool, which realizes free potential switching and combination. According to wiring changes on different wiring boards (such as changes in the position of neutral and live wires), the wiring tool can be freely combined according to the wiring board sorting to meet wiring requirements, so that the neutral and live wires are sorted to achieve position correspondence, thereby improving efficiency, avoiding wasting time on manual switching of power-on devices, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a schematic diagram of the three-dimensional structure of the test tooling of the present invention when it is inverted;

[0034] Figure 2 It is a schematic diagram of the three-dimensional structure of the test system of the present invention when the cover is opened when the test system is placed upright;

[0035] Figure 3 This is a schematic diagram of the three-dimensional structure of the test tooling of the present invention after the tooling body is removed when the tooling body is placed upright. Figure 1 ;

[0036] Figure 4 It is a schematic diagram of the explosion structure when the test tooling of the present invention is placed upright;

[0037] Figure 5 It is a schematic diagram of the three-dimensional structure when the test tool of the present invention is placed upright and the tool body is removed and viewed from the side;

[0038] Figure 6 It is a structural schematic diagram of the first support plate in the support body of the test tool of the present invention as viewed from the side of the positioning groove;

[0039] Figure 7 It is a schematic structural diagram of the first support plate in the support body of the test fixture of the present invention viewed from the track groove side;

[0040] Figure 8 It is a schematic diagram of the structure when the terminal block and the push-pushing block in the test fixture of the present invention are installed together;

[0041] Fig. 9is a structural schematic diagram of a third connecting member and a third adjusting module in the test tooling of the present invention;

[0042] Fig.10 It is a schematic diagram of the structure of the fixed limiter in the test tooling of the present invention;

[0043] Fig.11 It is a schematic diagram of the structure of the shell in the testing tool of the present invention.

[0044] In the figure, 1, tooling body; 11, shell; 12, cover plate; 2, conductor; 3, wiring member; 31, positioning boss; 4, potential switching assembly; 41, support member; 411, track groove; 412, positioning groove; 42, push member; 43, first adjustment module; 431, first motor; 432, first transmission gear set; 433, first screw rod; 434, first connecting block; 435, slide rod; 436, second connecting block; 437, first fixing ring; 438, second fixing ring; 44, second adjustment module; 441, second motor; 442, second transmission gear set; 443, second screw rod; 444, third connecting block; 445, fixed limiting member; 45, third adjustment module; 451, mounting seat; 452, telescopic member; 453, fixed column member; 5, power cord; 6, limiting structure; 61, limiting part; 62, limiting groove; 7, control system. DETAILED DESCRIPTION

[0045] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0046] like Figure 1 As shown, the present invention provides a test fixture for connecting to a terminal block of an electrical device for power-on testing, comprising a fixture body 1, at least one conductor 2 disposed on the fixture body 1 and electrically connected to the terminal block, at least one wiring member 3 connected to each potential of a power supply, and a potential switching component 4 that is transmission-connected to both the wiring member 3 and the conductor 2 to control different wiring members 3, different conductors 2 and the terminal block to sequentially form electrical connections, thereby forming an adjustment combination of multiple power-on potential sequences of the test fixture.

[0047] Specifically, the conductor 2 is a probe made of a conductive material, specifically a copper probe, and the probe is provided with upper and lower limit blocks, such as Fig.11As shown, a window for the probe to be extended and retracted is provided on the tool body 1, and a limiting cavity for the upper and lower limiting probes is provided inside. The upper and lower limiting blocks on the probe are both located inside the limiting cavity of the tool body 1. The probe is movably limited on the tool body 1 through the upper and lower limiting blocks and the limiting cavity, and can be extended and retracted relative to the tool body 1. When the upper limiting block abuts against the top of the limiting cavity, the probe extends out of the tool body 1 and can contact the potential of the terminal block to form an electrically conductive state. When the lower limiting block abuts against the bottom of the limiting cavity, the probe retracts into the tool body 1 and is separated from the terminal block and is in a reset waiting state. The terminal block 3 is used for Connected to the power supply, and the number of the wiring pieces 3 is multiple, respectively connected to different potentials of the power supply, such as the live wire position, the zero line position, and the neutral line position. Since the number and position of the live wire, the zero line and the neutral line on each wiring board are different, when different electrical equipment are powered on, it is necessary to timely adjust the power-on potential sorting on the test tool to ensure that the wiring piece sorting method connected to the power supply and the potential sorting of the wiring board on the electrical equipment are unified, so that the power-on test can be carried out smoothly. It is also necessary to timely adjust the sorting positions of the multiple wiring pieces 3 on the test tool to form a correct potential sorting. The potential sorting adjustment combination of multiple wiring pieces 3 is realized by the potential switching component 4, so that the test tool has a wider application range and is suitable for power-on tests of various wiring boards. By adopting a telescopic design for the copper probe, the probe is automatically reset and hidden in the tool body 1 for the probe that is not in use, so as to avoid interference caused by the ejection of all probes when in use, and only the copper probe with the potential in use is ejected and contacts the wiring board.

[0048] It should be further noted that the test fixture can be Figure 1 Use the placement direction shown, or Figure 2 Use in the orientation shown.

[0049] like Figure 2As shown, the potential switching assembly 4 includes a support member 41, a push member 42, a first adjustment module 43, a second adjustment module 44, and a third adjustment module 45. The support member 41 is fixed in the tooling body 1. The support member 41 is used to carry the first adjustment module 43, the second adjustment module 44, the third adjustment module 45 and the wiring member 3. A plurality of track grooves 411 are arranged throughout the support member 41. All the wiring members 3 are movably arranged in the plurality of track grooves 411. Specifically, the potential switching assembly 4 can control the movement of the wiring member 3 along the track groove 411. One end of the wiring member 3 is electrically connected to the power supply through the power line 5, and the other end is conductively connected to the push member 42. Further, the wiring member 3 can be made of conductive material, or conductive material can be arranged inside the wiring member 3 to form a conductive circuit with the push member 42. Of course, in the present invention, the tooling body 1 is preferably made of insulating material. The first adjustment module 43 is arranged on the tooling body 1, and the second adjustment module 44 is arranged on the first adjustment module 43, and can move in the first direction under the drive of the first adjustment module 43; the third adjustment module 45 is arranged on the second adjustment module 44, and can move in the second direction under the drive of the second adjustment module 44; the third adjustment module 45 can move in the third direction in the direction of approaching or moving away from the wiring member 3.

[0050] Specifically, the conductor 2 and the terminal 3 are arranged vertically, and the conductor 2 is located at the upper part and the terminal 3 is located at the lower part. The first direction of movement is a horizontal forward and backward movement in the direction of approaching or moving away from the conductor 2 and moving away from or approaching the terminal 3. The second direction of movement is a horizontal left and right movement along the radial direction of the conductor 2 or the terminal 3; the third direction of movement is a vertical up and down movement along the axial direction of the conductor 2 or the terminal 3.

[0051] As an optional embodiment of the present invention, the track groove 411 includes a horizontal groove and a vertical groove. There are multiple vertical grooves, which are arranged in parallel and spaced apart. All the conductors 2 are arranged one by one above one end of all the vertical grooves. The horizontal grooves are arranged perpendicular to the vertical grooves and connect all the vertical grooves in sequence. The connection between the horizontal grooves and the vertical grooves is a connecting structure, so that the wiring member 3 can move along the horizontal grooves and all the vertical grooves. The wiring member 3 is located at the other end of the vertical groove in the initial state.

[0052] like Figure 6 and Figure 7 As shown, further, in order to limit the terminal 3 and prevent it from slipping out of the track groove 411 of the support member 41, the support member 41 includes a first support plate and a second support plate stacked, and the first support plate and the second support plate are respectively provided with a positioning groove 412 with a specification larger than the track groove 411 on the opposite side, and the terminal 3 is provided with a positioning boss 31 that matches the specification of the positioning groove 412. It should be noted that the shape of the positioning groove 412 is the same as that of the track groove 411; Figure 8As shown, when the first support plate and the second support plate are stacked together, the positioning boss 31 of the terminal 3 is located in the positioning groove 412. Since the specification of the track groove 411 is smaller than that of the positioning groove 412, and the specification of the track groove 411 is smaller than that of the positioning boss 31, the terminal 3 is limited on the support member 41 and will not fall out from the upper or lower side of the track groove 411.

[0053] like Figure 3 As shown, as an optional embodiment of the present invention, the first adjustment module 43 includes a first motor 431, a first transmission gear set 432, a first screw rod 433, a first connection block 434, a slide rod 435 and a second connection block 436. The first screw rod 433 and the slide rod 435 are arranged side by side at both ends of the second adjustment module 44. The first connection block 434 is screwed on the first screw rod 433, and the second connection block 436 is sleeved on the slide rod 435. The second adjustment module 44 is connected to the first connection block 434 and the second connection block 436. The first motor 431 is connected to the first screw rod 433 through the first transmission gear set 432. When in use, the first motor 431 rotates to drive the first transmission gear set 432 to rotate, the first screw rod 433 rotates accordingly, the first connection block 434 and the second connection block 436 move forward and backward along the axial direction of the first screw rod 433, and drive the second adjustment module 44 to move forward and backward accordingly.

[0054] like Figure 4 As shown, as an optional embodiment of the present invention, the second adjustment module 44 includes a second motor 441, a second transmission gear set 442, a second screw rod 443, a third connection block 444, and a fixed stopper 445; both ends of the fixed stopper 445 are fixed on the first connection block 434 and the second connection block 436, the second screw rod 443 is rotatably arranged in the fixed stopper 445, the second motor 441 is transmission-connected to the second screw rod 443 through the second transmission gear set 442, the third connection block 444 is screwed on the second screw rod 443, and one end passes through the through opening of the fixed stopper 445 and is connected to the third adjustment module 45. Fig. 9 and Fig.10 As shown, specifically, the second motor 441 is installed on the fixed stopper 445, and the fixed stopper 445 is a hollow cylinder structure, which is formed by connecting two semicircular stopper cylinders. The top and bottom of the fixed stopper 445 have through openings. The third connecting block 444 includes a cylinder, an upper convex strip and a lower convex strip. The cylinder is screwed on the second screw rod 443, and there is a gap between the cylinder and the inside of the fixed stopper 445. The upper convex strip and the lower convex strip are relatively arranged at the top and bottom of the cylinder, and the upper convex strip and the lower convex strip are respectively slidably penetrated at the top and bottom through openings of the fixed stopper 445, so that when the second screw rod 443 rotates, the third connecting block 444 can move axially along the fixed stopper 445. The third adjustment module 45 is installed at the bottom of the lower convex strip.

[0055] like Figure 5 As shown, as an optional embodiment of the present invention, the third adjustment module 45 includes a mounting seat 451, a telescopic member 452 and a fixed column member 453 which are arranged in sequence, the mounting seat 451 is installed on the lower convex strip at the bottom of the third connecting block 444, the telescopic member 452 can control the telescopic movement of the fixed column member 453, and the fixed column member 453 can be connected to the wiring member 3 through the limiting structure 6 when it is extended.

[0056] In specific use, when it is necessary to control the movement of the wiring member 3, the first adjustment module 43 and the second adjustment module 44 are used to drive the third adjustment module 45 to move to the top of the wiring member 3, and then the fixed column 453 in the third adjustment module 45 is lowered and the wiring member 3 is positioned by the limiting structure 6. At this time, the first adjustment module 43 and the second adjustment module 44 are moved forward, backward, left and right to drive the wiring member 3 to move along the horizontal groove and the vertical groove of the track groove 411 to move to the bottom of the corresponding conductor 2. In order to ensure that electrical conduction can be achieved, the top of the push member 42 is higher than the bottom of the conductor 2, so that when the wiring member 3 moves to the bottom of the conductor 2, the push member 42 can push the conductor 2 out of the tooling body 1.

[0057] The push-pull electromagnet is driven to move forward, backward, left and right by using a motor, a lead screw and a gear set, so as to provide power for the forward, backward, left and right movement of the terminal 3 and ensure stable operation.

[0058] like Fig. 9 As shown, further, the limiting structure 6 includes a hemispherical limiting portion 61 arranged on the top of the connecting member 3 and a limiting groove 62 arranged at the bottom of the fixed column 453 and matched with the limiting portion 61.

[0059] like Figure 8 As shown, by adopting a convex hemispherical limiting portion 61 structural design for one end of the terminal 3, the end face of the fixed column 453 at the bottom of the push-pull electromagnet is designed as a concave hemispherical limiting groove 62, and the contact point between one end of the terminal 3 and the fixed column 453 adopts spherical contact. When the push-pull electromagnet is pushed out, the end face of the fixed column 453 can effectively and firmly contact the top surface of the terminal 3, ensuring the reliability of moving the terminal 3 forward, backward, left and right.

[0060] Furthermore, the telescopic member 452 includes a push-pull electromagnet or a micro cylinder.

[0061] like Figure 8 As shown, further, in order to ensure the smooth completion of the pushing action and the smooth separation after the pushing is completed, the pushing member 42 includes a V-shaped spring sheet, and the contact end between the conductor 2 and the spring sheet is an inclined structure adapted to the inclination direction of the spring sheet.

[0062] like Figure 4As shown, as an optional embodiment of the present invention, the tool body 1 includes a shell 11 and a cover plate 12 covering the open portion of the shell 11, and a window for the conductor 2 to enter and exit is opened on the shell 11.

[0063] The present invention provides a test system, comprising a control system 7 and a test fixture electrically connected to the control system 7. It should be noted that the control system 7 is implemented by programming using products in the prior art.

[0064] Furthermore, in order to realize the automatic operation of the test system, the control system 7 stores information of wiring boards of different models and power-on potential sequencing information corresponding to the wiring boards of different models.

[0065] Embodiment 1:

[0066] In this embodiment, the power cord 5 in the test fixture is fixed to one end of the wiring member 3 by screws, and the spring is fixed to the other end of the wiring member 3. The cover plate 12 and the shell 11 serve as a shell to protect the internal structure of the test fixture. The control system 7 mainly controls the operation of the automatic potential switching component 4 to achieve any combination of potentials. The first motor 431 is installed on the shell 11, one gear in the first transmission gear set 432 is installed on the first motor 431, and the other gear is installed on the first screw rod 433. The first fixing ring 437 is respectively installed on the cover plate 12 and the shell 11 (to realize the positioning of the two ends of the first screw rod 433), the first screw rod 433 is installed on the first fixing ring 437, the first connecting block 434 is installed on the first screw rod 433, and the second motor 441 is installed It is installed on the hollow cylindrical fixed limit piece 445, the support piece 41 is installed on the shell 11, the mounting seat 451 is installed on the second screw rod 443 through the third connecting block 444, the push-pull electromagnet is installed on the mounting seat 451, the second fixed ring 438 is respectively installed on the cover plate 12 and the shell 11 (to realize the positioning of both ends of the slide rod 435), the slide rod 435 is installed on the second fixed ring 438, the second connecting block 436 is installed on the slide rod 435, one gear in the second transmission gear set 442 is installed on the second motor 441, and the other gear is installed on the second screw rod 443, the semi-cylindrical fixed limit piece 445 and the second screw rod 443 are installed on the first connecting block 434 and the second connecting block 436, and the probe is installed in the limiting cavity of the shell 11.

[0067] The present invention provides a power-on test method, which uses a test system to perform a power-on test on a device under test, and specifically includes the following steps:

[0068] Step 100, information entry: before use, all machine type wiring board information and wiring board power-on potential sorting information are preset in the control system for storage; wherein the wiring board power-on potential information includes the required walking track of the wiring parts to complete the potential sorting and the action steps of the potential switching component 4 corresponding to each walking track; specifically, before use, the potential sorting paths of different machine type wiring boards are preset in the control system for storage;

[0069] Step 200, model identification, before the power-on test, identify the wiring position status of the wiring board of the device under test, and identify the wiring board information corresponding to the paired device by scanning the model barcode or manually selecting the model. If the identification and pairing fails, the identification and pairing are performed again. If the identification and pairing is successful, the control system reads the power-on potential sorting information corresponding to the wiring board pre-stored therein according to the scanned code content, and sends a control signal to the potential switching component in the test tooling;

[0070] Step 300, potential switching, the potential switching component completes the adjustment combination of the potential sorting under the control of the control signal, so that each required wiring member moves to the bottom of the corresponding conductor, and pushes the conductor to extend from the tooling body to achieve electrical conduction with the wiring board, and completes the required potential switching; specifically, the control system sends action signals to the three adjustment modules in the potential switching component in sequence according to the pre-stored walking path, completes the corresponding front and back, left and right and lifting and lowering movements, moves the third adjustment module to the corresponding standby wiring member and connects it with the wiring member limit, and the control system sends action signals to the first and second adjustment modules again, and performs corresponding front and back left and right movements to move the wiring member to the use position, that is, under the conductor and push the corresponding conductor; before the potential switching component is started, each wiring member is in the track groove and is located at one end of the vertical groove away from the probe. When the control system scans the code to obtain the potential information of the wiring board, the first motor starts to rotate, the first motor drives the first transmission gear group to rotate, the first transmission gear group drives the first screw rod to rotate, the first screw rod drives the first connecting block to move forward, and the first connecting block drives the second screw rod, the fixed limit member, the third connecting block and the second motor to move forward to the set position. The second screw rod drives the third connecting block to move rightward (leftward), and the third connecting block drives the push-pull electromagnet to move rightward (leftward) until the push-pull electromagnet reaches directly above the set connecting piece.

[0071] The push-pull electromagnet starts to push out so that the fixed column is connected to the spherical surface of the terminal (the bottom of the fixed column at the connection is a hemispherical concave design, and the top of the terminal is a spherical convex design to ensure reliable contact). Then, the first motor starts to rotate, the first motor drives the first transmission gear set to rotate, the first transmission gear set drives the first screw rod to rotate, the first screw rod drives the first connecting block to move backward, the first connecting block drives the second screw rod, the fixed limiter, the third connecting block and the second motor to move backward, and the second screw rod drives the third connecting block and the terminal to move backward until they reach the set position (the middle position of the track groove).

[0072] The second motor starts, the second motor drives the second transmission gear set to rotate, the second transmission gear set drives the second screw to rotate, the second screw drives the third connecting block to move left (or right), the third connecting block drives the push-pull electromagnet to move left (or right), the push-pull electromagnet drives the terminal to move left (or right), until the terminal reaches a vertical slot corresponding to a probe to be ejected).

[0073] Then, the first motor starts to rotate, the first motor drives the first transmission gear set to rotate, the first transmission gear set drives the first screw to rotate, the first screw drives the first connection block to move backward, the first connection block drives the second screw, the fixed limit piece, the third connection block and the second motor to move backward, the second screw drives the third connection block and the terminal piece to move backward, until the spring piece contacts the probe, the spring piece pushes the probe out of the window of the shell 11 to the set distance, and then, the push-pull electromagnet retracts, so that the concave surface of the fixed column is separated from the convex spherical surface of the terminal piece, at this time, the terminal piece is stuck in the positioning groove through the positioning boss to prevent the terminal piece from sliding and falling out up and down at will, so as to achieve the first contact and conduction between the probe and the spring piece. Then, the above-mentioned action process is repeated, and the terminal piece is adsorbed along the preset path to move forward, backward, left and right to start the cycle of the second and third groups of potential switching, until all required potential switching is completed;

[0074] Step 400, power-on test, when all required wiring parts, conductors and wiring boards are electrically connected, the control system performs conduction state identification and judgment, and performs identification and judgment again when it is identified that the wiring parts are not in place. After the wiring parts are in place, that is, when the conduction is successful, the power can be turned on normally to realize the detection, and the power-on test is performed at the beginning;

[0075] Step 500, reset. After the power-on test is completed, the control system controls the potential switching component to move in the opposite direction of step 300, so that all the wiring components are reset to the initial position, waiting for the next potential switching and power-on test.

[0076] In step 100, the power-on potential sequencing information of the wiring board includes the required walking tracks of the wiring components to complete the potential sequencing and the action steps of the potential switching components corresponding to each walking track.

[0077] The preset process of the power-on potential sorting information includes the following specific steps:

[0078] Step 600, read the pre-entered wiring board information, obtain the potential sorting of the wiring board, generate the required number and position of wiring parts information, manually control the potential switching component to move up, down, left, and right and reach the wiring parts, manually control the potential switching component to approach the wiring parts and contact with them, manually control the potential switching component to move up, down, left, and right to drive the wiring parts to move, and reach the required conductor to make the wiring parts electrically conductive and contact with the conductor, repeat the above actions in sequence, complete the sorting process of all required wiring parts moving to the corresponding conductors, the control system records the walking trajectories of all the above wiring parts and the corresponding action data of the potential switching components, generates a set of power-on potential sorting information and stores it; according to the above steps, the power-on potential sorting information generation and storage process of all types of wiring boards is completed, and all power-on potential sorting information is encoded and distinguished, waiting for the control system to call and identify.

[0079] First of all, it should be explained here that “inward” refers to the direction toward the center of the accommodating space, and “outward” refers to the direction away from the center of the accommodating space.

[0080] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the attached Figure 2 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0081] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0082] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0083] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0084] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0085] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A test fixture, used to connect to a terminal block of an electrical device for power-on testing, characterized in that: The test tool comprises a tool body, at least one conductor disposed on the tool body and electrically connected to a wiring board, at least one wiring member connected to each potential of a power supply, and a potential switching component that is transmission-connected to the wiring member and the conductor to control different wiring members, different conductors and wiring boards to form electrical connections in sequence, thereby forming an adjustment combination of multiple power-on potential sequences of the test tool; The potential switching assembly includes a support member, a push member, a first adjustment module, a second adjustment module, and a third adjustment module. A plurality of track grooves are provided through the support member, and all the wiring members are movably provided in the plurality of track grooves respectively. One end of the wiring member is electrically connected to the power supply through a power line, and the other end is conductively connected to the push member; the first adjustment module is provided on the tool body, and the second adjustment module is provided on the first adjustment module, and can move in a first direction under the drive of the first adjustment module; the third adjustment module is provided on the second adjustment module, and can move in a second direction under the drive of the second adjustment module; the third adjustment module can move in a third direction in a direction close to or away from the wiring member; Potential switching: The potential switching component completes the adjustment combination of the potential sorting under the control of the control signal, so that each required wiring member moves to the bottom of the corresponding conductor, and pushes the conductor to extend from the tooling body to achieve electrical conduction with the terminal board, thereby completing the required potential switching.

2. The test tool according to claim 1, characterized in that: The support member comprises a first support plate and a second support plate which are stacked, and a positioning groove having a specification larger than that of the track groove is respectively arranged on one side opposite to the first support plate and the second support plate, and a positioning boss having a specification matching that of the positioning groove is arranged on the wiring member; The track groove includes a horizontal groove and a vertical groove. There are multiple vertical grooves, which are arranged in parallel and at intervals. All the conductors are arranged one by one above one end of all the vertical grooves. The horizontal groove is arranged perpendicular to the vertical grooves and connects all the vertical grooves in sequence. The wiring member is located at the other end of the vertical groove in the initial state.

3. The test tool according to claim 1 or 2, characterized in that: The first adjusting module includes a first motor, a first transmission gear set, a first screw rod, a first connecting block, a sliding rod and a second connecting block. The first screw rod and the sliding rod are arranged side by side at two ends of the second adjusting module. The first connecting block is screwed on the first screw rod, and the second connecting block is sleeved on the sliding rod. The second adjusting module is connected to both the first connecting block and the second connecting block. The first motor is transmission-connected to the first screw rod through the first transmission gear set.

4. The test fixture according to claim 3, characterized in that: The second adjusting module includes a second motor, a second screw rod, a third connecting block, a fixed limit piece, and a second transmission gear set; the two ends of the fixed limit piece are fixed on the first connecting block and the second connecting block, the second screw rod is rotatably arranged in the fixed limit piece, the second motor is transmission-connected to the second screw rod through the second transmission gear set, the third connecting block is screwed on the second screw rod, and one end passes through the through opening of the fixed limit piece and is connected to the third adjusting module.

5. The test tool according to claim 4, characterized in that: The third adjustment module includes a mounting seat, a telescopic member and a fixed column member which are arranged in sequence. The mounting seat is installed on the third connecting block. The telescopic member can control the telescopic movement of the fixed column member. When the fixed column member is extended, it can be connected with the connecting member through a limiting structure.

6. The test tool according to claim 5, characterized in that: The limiting structure includes a hemispherical limiting portion arranged on the top of the connecting piece and a limiting groove arranged on the bottom of the fixed column piece and matched with the specification of the limiting portion. The telescopic piece includes a push-pull electromagnet or a micro cylinder.

7. The test tool according to claim 1, characterized in that: The tool body comprises a shell and a cover plate arranged at an opening of the shell, and a window for the conductor to enter and exit is opened on the shell.

8. A testing system, characterized in that: A test fixture as claimed in any one of claims 1 to 7 comprising a control system and electrically connected to the control system, wherein the control system stores information of wiring boards of different models and power-on potential sequencing information corresponding to wiring boards of different models.

9. A power-on test method, characterized in that: Using the test system as claimed in claim 8 to perform a power-on test on a device under test specifically comprises the following steps: Step 100, information entry: before use, all the machine type wiring board information and wiring board power-on potential sorting information are preset in the control system for storage; Step 200, model identification, before the power-on test, identify the wiring position status of the wiring board of the device under test, and identify the wiring board information corresponding to the paired device by scanning the model barcode or manually selecting the model. After the pairing is successfully identified, read the power-on potential sorting information corresponding to the wiring board pre-stored therein according to the scanned code content, and send a control signal to the potential switching component in the test tooling; Step 400, power-on test, when all required wiring parts, conductors and wiring boards are electrically connected, the control system performs conduction state identification and judgment, and when all conduction is successful, normal power-on can be performed for detection, and power-on starts to perform power-on test; Step 500, reset. After the power-on test is completed, the control system controls the potential switching component to move in the opposite direction of step 300, so that all the wiring components are reset to the initial position, waiting for the next potential switching and power-on test.

10. The power-on test method according to claim 9, characterized in that: The power-on potential sequencing information of the wiring board in step 100 includes the required walking tracks of the wiring components to complete the potential sequencing and the action steps of the potential switching components corresponding to each walking track.

11. The power-on test method according to claim 10, characterized in that: The preset process of the power-on potential sorting information includes the following specific steps: Step 600, read the pre-recorded wiring board information, obtain the potential sorting of the wiring board, generate the required number and position of wiring parts information, manually control the potential switching component to move forward, backward, left and right and reach the wiring parts, manually control the potential switching component to move up and down to approach the wiring parts and contact with them, manually control the potential switching component to move forward, backward, left and right to drive the wiring parts to move, and reach the required conductor to make the wiring parts electrically conductive and contact with the conductor, repeat the above actions in sequence, complete the sorting process of all the required wiring parts moving to the corresponding conductors, the control system records the walking tracks of all the above wiring parts and the corresponding action data of the potential switching components, generates a set of power-on potential sorting information and stores it; According to the above steps, the generation and storage process of the power-on potential sequencing information of all types of wiring boards is completed, and all the power-on potential sequencing information is coded and distinguished, waiting for the control system to retrieve and identify.

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