Circuit board testing machine of lateral touch spring type touch key

Abstract

The utility model relates to a lateral touch spring type touch button circuit board testing machine, which comprises a test board, a positioning jig, a test board, a lifting assembly and a touch test assembly, a plurality of test probes are arranged on the test board, the test probes extend towards the direction of the positioning jig, the positioning jig is used for placing a circuit board to be tested, and the lifting assembly is arranged on the test board. The positioning jig is arranged on the test board and arranged on the test board in a floating mode, the test board is movably arranged over the positioning jig through the lifting assembly, and the test board presses the circuit board to be tested downwards through the lifting assembly so as to enable the circuit board to be tested to be in contact conduction with the plurality of test probes; the touch test assembly comprises a touch pen and a lateral driving piece, the touch pen is movably arranged on the side edge of the positioning jig through the lateral driving piece, and the touch pen cooperates with the pressed circuit board to be tested so as to laterally touch the spring type touch key. According to the utility model, the spring type touch key is automatically touched through the touch test assembly, and the touch pen touches the spring type touch key in the side direction, so that the circuit board can be better compatible with other electrical tests of the circuit board.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit board test technical field, especially relate to a circuit board testing machine of side touch spring type touch button. BACKGROUND

[0002] Spring type touch button is also called touch spring, touch sensing spring and button spring, which uses spring to build a capacitive sensor to replace mechanical switch, and is mostly used in circuit boards of household appliances such as stove, washing machine, refrigerator and microwave oven. Spring type touch button can also be combined with other functions such as indicator light to expand the function of the button. After the assembly of the circuit board is completed, the electrical function of the circuit board needs to be tested, such as the power-on condition of the circuit board, the triggering of the button and the light-emitting condition of the indicator light. For the circuit board with spring type touch button and indicator light, the indicator light is usually arranged inside the spring type touch button. The existing circuit board testing machine cannot detect the triggering condition of the spring type touch button while detecting the light-emitting condition of the indicator light. During the test, the spring type touch button is usually touched manually to trigger a certain action on the circuit board, which may cause false touch and affect the test result.

[0003] Therefore, it is necessary to design a circuit board electrical testing machine for the circuit board with spring type touch button and indicator light arranged at the center of the spring type touch button. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problems in the prior art, the utility model provides a circuit board testing machine of side touch spring type touch button.

[0005] The utility model provides a circuit board testing machine of side touch spring type touch button, which comprises a test table, a positioning jig, a test plate, a lifting assembly and a touch test assembly. A plurality of test probes are arranged on the test table. The test probes extend towards the positioning jig. The positioning jig is used to place the circuit board to be tested and is arranged on the test table in a floating manner. The test plate is movably arranged above the positioning jig by the lifting assembly. The test plate is used to press the circuit board to be tested by the lifting assembly to make the circuit board to be tested contact with the plurality of test probes. The touch test assembly comprises a touch pen and a lateral driving member. The touch pen is movably arranged on the side of the positioning jig by the lateral driving member. The touch pen cooperates with the pressed circuit board to be tested to touch the spring type touch button laterally.

[0006] In some embodiments, the touch testing assembly further comprises a mounting base vertically arranged on the testing table and located at one side of the positioning jig, the side driving member is fixed on the mounting base, the mounting base is provided with a guide hole, the touch pen is inserted into the guide hole, the middle part of the touch pen is connected with the driving end of the side driving member through the fixing block, the side driving member drives the touch pen to move along the guide hole, the capacitive touch head of the touch pen is exposed from the fixing block and arranged towards the positioning jig.

[0007] In some embodiments, a plurality of touch pens and a plurality of side driving members are arranged side by side on the mounting base, and each touch pen is connected with one side driving member.

[0008] In some embodiments, the side driving member is a pen-shaped cylinder.

[0009] In some embodiments, the testing table is provided with a support frame for mounting a lifting assembly, the lifting assembly comprises a lifting cylinder and a lifting guide rod, the lifting cylinder is fixed on the fixed plate of the support frame and arranged towards the positioning jig, the testing plate is fixed with the driving end of the lifting cylinder, the testing plate is movably connected with the horizontal plate of the support frame through the lifting guide rod, and the lifting cylinder drives the testing plate to move up and down along the lifting guide rod.

[0010] In some embodiments, the testing plate is provided with a visual detection assembly, the visual detection assembly comprises a light shielding plate and a fiber probe, the light shielding plate is arranged around the edge of the testing plate, and the fiber probe is mounted on the testing plate and located directly above the LED lamp bead of the circuit board to be tested to detect the light emission of the LED lamp bead at the center of the spring touch button.

[0011] In some embodiments, the testing plate is provided with a plurality of jacks, the plurality of jacks are arranged at the lower end surface of the testing plate and arranged towards the positioning jig, and the lower end surface of the jack cooperates with the circuit board to be tested.

[0012] In some embodiments, the jack is an electrically insulated plastic rod.

[0013] In some embodiments, the positioning jig is provided with a positioning groove, the circuit board to be tested is clamped in the positioning groove, the positioning jig is provided with a pick-and-place groove on both sides of the positioning groove, and the pick-and-place groove is communicated with the positioning groove.

[0014] In some embodiments, the positioning jig is provided with a plurality of through holes matched with a plurality of test probes at the bottom of the positioning groove, the lower end of the test probe is fixed on the testing table, the upper end of the test probe is arranged in the through hole, and the test probe is in contact with the circuit board to be tested after being pressed through the through hole.

[0015] Compared with the prior art, the utility model discloses the beneficial effects are: through the touch pen of touch test subassembly automatic touch spring type touch button in the side, realize the trigger of spring type touch button in the testing process, to test the electric function of spring type touch button, and the touch pen is touched spring type touch button in the side, will not block the other electric test of test board to circuit board, can better and other electric test of circuit board are compatible. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the perspective structure schematic diagram of circuit board testing machine of side touch spring type touch button of the embodiment of the application.

[0017] Figure 2 It is the front view structure schematic diagram of circuit board testing machine of side touch spring type touch button of the embodiment of the application.

[0018] Figure 3 It is the side view structure schematic diagram of circuit board testing machine of side touch spring type touch button of the embodiment of the application.

[0019] Figure 4 It is the perspective structure schematic diagram of circuit board testing machine of side touch spring type touch button of the embodiment of the application in working condition one.

[0020] Figure 5 It is the perspective structure schematic diagram of circuit board testing machine of side touch spring type touch button of the embodiment of the application in working condition two.

[0021] Figure 6 It is the plane structure schematic diagram of circuit board of the embodiment of the application.

[0022] Reference signs: 1, test table;11, test probe;

[0023] 2, positioning jig;21, positioning groove;22, take and place groove;23, through -hole;24, sliding rod;25, return spring;

[0024] 3, test board;31, light shield;32, optical fiber probe;33, top rod;

[0025] 4, lifting assembly;41, lifting cylinder;42, lifting guide rod;

[0026] 5, touch test subassembly;51, touch pen;52, capacitive touch head;53, lateral drive part;54, mounting seat;55, guide hole;56, fixed block;

[0027] 6, support frame;61, vertical plate;62, horizontal plate;63, fixed plate;64, back plate;

[0028] 7, the circuit board to be measured; 71, spring touch button; 72, LED lamp bead. DETAILED DESCRIPTION

[0029] The specific implementation of the present application is described with reference to the drawings.

[0030] Reference Figure 1 , the figure is a schematic diagram of the three-dimensional structure of the circuit board testing machine for laterally touching spring touch buttons, from bottom to top in turn are test table 1, positioning jig 2, test plate 3 and lifting assembly 4, on one side of the positioning jig 2 is touch test assembly 5, the test plate 3 moves up and down through the lifting assembly 4, the touch test assembly 5 is arranged on the side of the positioning jig 2, the touch pen 51 of the touch test assembly 5 moves horizontally through the lateral driving member 53, so that the touch pen 51 laterally touches the spring touch button 71 on the circuit board to be measured 7.

[0031] Reference Figures 1 to 6 A circuit board testing machine for laterally touching spring touch buttons, comprising test table 1, positioning jig 2, test plate 3, lifting assembly 4 and touch test assembly 5, a plurality of test probes 11 are arranged on the test table 1, the test probes 11 extend towards the positioning jig 2, the positioning jig 2 places the circuit board to be measured 7 and is arranged on the test table 1 in a floating manner, the test plate 3 is movably arranged above the positioning jig 2 through the lifting assembly 4, the test plate 3 presses the circuit board to be measured 7 downward through the lifting assembly 4, so as to make the circuit board to be measured 7 contact and conduct with the plurality of test probes 11; the touch test assembly 5 comprises a touch pen 51 and a lateral driving member 53, the touch pen 51 is movably arranged on the side of the positioning jig 2 through the lateral driving member 53, the touch pen 51 cooperates with the circuit board to be measured 7 pressed downward to laterally touch the spring touch button 71.

[0032] The circuit board testing machine for laterally touching spring touch buttons of the present application automatically touches the spring touch button 71 on the side through the touch pen 51 of the touch test assembly 5, realizes the triggering of the spring touch button 71 during the testing process, tests the corresponding electrical function of the spring touch button 71, and the touch pen 51 laterally touches the spring touch button 71, which does not block the other electrical tests of the test plate 3 on the circuit board to be measured 7, and can better be compatible with the other electrical tests of the circuit board to be measured 7.

[0033] In order to install the touch test assembly 5, in the present embodiment, reference Figures 1 to 3The touch test assembly 5 also includes a mounting base 54, which is vertically mounted on the test table 1 and located on one side of the positioning fixture 2. A lateral drive 53 is fixed on the mounting base 54. A guide hole 55 is provided on the mounting base 54. A stylus 51 is inserted into the guide hole 55. The middle part of the stylus 51 is connected to the drive end of the lateral drive 53 through a fixing block 56. The lateral drive 53 drives the stylus 51 to move along the guide hole 55. The capacitive touch head 52 of the stylus 51 is exposed on the fixing block 56 and is positioned towards the positioning fixture 2.

[0034] Understandably, with this configuration, the capacitive touch head 52 is hemispherical and is used to simulate a human hand. The capacitive touch head 52 can simulate a human hand touching the spring-loaded touch button 71, thereby triggering the spring-loaded touch button 71. The inner wall of the guide hole 55 on the mounting base 54 is slidably connected to the outer wall of the stylus 51. The movement of the stylus 51 is guided through the guide hole 55 to ensure that the stylus 51 can stably touch the spring-loaded touch button 71. The lateral drive component 53 is fixed on the test platform 1 through the mounting base 54 to ensure that the lateral drive component 53 can stably drive the stylus 51.

[0035] In order to control each stylus 51 individually, in this embodiment, reference is made to... Figure 1 and Figure 2 Multiple styluses 51 and multiple lateral actuators 53 are arranged side by side on the mounting base 54, and each stylus 51 is connected to a lateral actuator 53.

[0036] Understandably, with this setup, four spring-loaded touch buttons 71 are arranged side by side on the circuit board under test 7. Each spring-loaded touch button 71 controls a different function, and each stylus 51 is controlled by a separate lateral drive 53. The movements of each stylus 51 are independent of each other, with intervals between the time each stylus 51 touches the corresponding spring-loaded touch button 71. This allows for better differentiation of the triggering of the functions of the four spring-loaded touch buttons 71 during the test.

[0037] To simplify the structure of the touch testing component 5, in this embodiment, refer to... Figure 2 The lateral drive component 53 is a pen-shaped cylinder.

[0038] Understandably, this configuration results in a smaller cylinder diameter and a slender overall shape for the pen-shaped cylinders, allowing the four pen-shaped cylinders to be arranged side-by-side on the mounting base 54. At the same time, the spacing between two adjacent pen-shaped cylinders matches the spacing between two adjacent spring-loaded touch buttons 71, making it suitable for testing small-pitch spring-loaded touch buttons 71.

[0039] In order to suspend the test board 3 directly above the positioning fixture 2, in this embodiment, refer to Figures 1 to 5, the test bench 1 is provided with a support frame 6 on which the lifting assembly 4 is installed, the lifting assembly 4 comprises a lifting cylinder 41 and a lifting guide rod 42, the lifting cylinder 41 is fixed on a fixed plate 63 of the support frame 6 and is arranged towards the positioning jig 2, the test plate 3 is fixed with a driving end of the lifting cylinder 41, and the test plate 3 is movably connected with a horizontal plate 62 of the support frame 6 through the lifting guide rod 42, and the lifting cylinder 41 drives the test plate 3 to move up and down along the lifting guide rod 42.

[0040] It should be further explained that the support frame 6 is composed of a vertical plate 61, the horizontal plate 62, the fixed plate 63 and a back plate 64, the two vertical plates 61 are fixed vertically on the test bench 1, the positioning jig 2 is located between the two vertical plates 61, the horizontal plate 62 is fixed vertically between the two vertical plates 61, the fixed plate 63 and the back plate 64 are fixed vertically between the two vertical plates 61 and are arranged perpendicularly to the horizontal plate 62, and the back plate 64 is used for installing electromagnetic valves of the control pen-shaped cylinder and the lifting cylinder 41.

[0041] It can be understood that, in this way, the support frame 6 is provided with the lifting cylinder 41 and the lifting guide rod 42, the lower end of the lifting guide rod 42 is fixed with the test plate 3, the upper end of the lifting guide rod 42 is slidably connected with the horizontal plate 62, the lifting cylinder 41 is a three-piston-rod cylinder, and in combination with the two lifting guide rods 42, the test plate 3 can be stably driven to move up and down, so that the test plate 3 is stably hoisted above the positioning jig 2.

[0042] In order to detect the light-emitting condition of the LED lamp bead 72 at the center of the spring-type touch button 71, in the embodiment, referring to Figures 1 to 6 , the test plate 3 is provided with a visual detection assembly, the visual detection assembly comprises a light shield plate 31 and a fiber probe 32, the light shield plate 31 is arranged around the edge of the test plate 3, and the fiber probe 32 is installed on the test plate 3 and is located above the LED lamp bead 72 of the circuit board 7 to be detected, so as to detect the light-emitting condition of the LED lamp bead 72 at the center of the spring-type touch button 71.

[0043] It can be understood that, in this way, the test plate 3 is provided with a plurality of fiber probes 32, each fiber probe 32 detects one LED lamp bead 72, the fiber probe 32 detects the light-emitting condition of the LED lamp bead 72, the fiber probe 32 converts the collected light signals into electric signals through a photoelectric conversion module, and the electric signals are transmitted to a computer to determine whether the LED lamp bead 72 normally emits light; the light shield plate 31 arranged around the edge of the test plate 3 is used to isolate external light, the light shield plate 31 is a brown semi-transparent plate and can filter a large amount of external light, so that the detection process of the fiber probe 32 is not disturbed by too much light, and the test plate 3 is not provided with the light shield plate 31 on one side of the touch test assembly 5, so as to avoid interference with the action of the lateral touch assembly.

[0044] In order to provide sufficient distance for detection of the fiber probe 32, in the embodiment, referring toFigure 5 The test board 3 is provided with multiple push rods 33, which are spaced apart on the lower end face of the test board 3 and are positioned toward the positioning fixture 2. The lower end face of the push rods 33 cooperates with the circuit board 7 to be tested.

[0045] Understandably, this setup, with the push rod 33 contacting the circuit board under test 7, ensures that during the test, the circuit board under test 7 and the test board 3 are separated by the push rod 33. This allows the fiber optic probe 32 to detect the LED beads 72 on the circuit board under test 7, preventing the fiber optic probe 32 from hitting the spring-loaded touch button 71. The length of the push rod 33 is greater than the height of the light shield 31, ensuring that when the push rod 33 contacts the circuit board under test 7, the light shield 31 will not contact the positioning fixture 2, thus ensuring that multiple push rods 33 can apply downward pressure evenly to the circuit board under test 7.

[0046] To avoid damage to the circuit board 7 under test by the push rod 33, in this embodiment, reference is made to... Figure 5 The top rod 33 is an electrically insulated plastic rod.

[0047] Understandably, this design, with the lower end of the push rod 33 being conical, reduces the contact area with the circuit board 7 under test. The electrical insulation of the push rod 33 prevents short circuits on the circuit board 7 under test, ensuring the safety of the circuit board 7. The plastic material of the push rod 33 is relatively soft, preventing scratches on the circuit board 7 under test.

[0048] To facilitate the handling of the circuit board 7 under test, in this embodiment, reference is made to... Figure 1 The positioning fixture 2 is provided with a positioning groove 21, and the circuit board 7 to be tested is snapped into the positioning groove 21. The positioning fixture 2 is provided with pick-up and put-down grooves 22 on both sides of the positioning groove 21, and the pick-up and put-down grooves 22 are connected to the positioning groove 21.

[0049] Understandably, with this setup, the shape of the positioning groove 21 matches the shape of the circuit board 7 under test. When placing the circuit board 7 under test, the worker's fingers are at the pick-and-place groove 22, which allows the circuit board 7 under test to be stably held in the positioning groove 21. After the test is completed, the worker's fingers can apply force to the edge of the circuit board 7 under test at the pick-and-place groove 22 to pick up the circuit board 7 under test.

[0050] In order to complete the electrical test of the circuit board 7 under test, in this embodiment, reference is made to... Figure 3 The positioning fixture 2 has multiple through holes 23 that are matched with multiple test probes 11 through the bottom of the positioning groove 21. The lower end of the test probe 11 is fixed to the test stage 1, and the upper end of the test probe 11 is set in the through hole 23. The test probe 11 makes contact and conduction with the circuit board 7 under test after being pressed down through the through hole 23.

[0051] It needs to be further explained that four slide rods 24 are arranged between the positioning jig 2 and the test table 1, the four slide rods 24 are located at four corners of the positioning jig 2, the upper end of the slide rod 24 is fixed with the positioning jig 2, the lower end of the slide rod 24 is slidably connected with the test table 1, the reset spring 25 is further arranged between the positioning jig 2 and the test table 1, when the test plate 3 presses the positioning jig 2, the positioning jig 2 descends along the slide rod 24, the reset spring 25 is compressed, at the same time, the circuit board 7 to be tested is contacted and conducted with the test probe 11 to perform corresponding electrical test, the lateral driving member 53 drives the touch pen 51 to move, so that the capacitive touch head 52 is contacted with the spring type touch button 71, the spring type touch button 71 is triggered, the optical fiber probe 32 of the test plate 3 detects the light emitting condition of the LED lamp bead 72 at the center of the spring type touch button 71; after the test is completed, when the test plate 3 moves upward and separates from the positioning jig 2, the reset spring 25 pushes the positioning jig 2 to ascend along the slide rod 24, so that the test probe 11 is separated from the circuit board 7 to be tested.

[0052] It can be understood that in this way, the test probe 11 is contacted or separated from the circuit board 7 to be tested in the positioning groove 21 through the through hole 23, the test plate 3 presses the circuit board 7 to be tested to make the circuit board 7 to be tested contacted and conducted with the test probe 11, the test plate 3 moves upward, the circuit board 7 to be tested is separated from the test probe 11 under the action of the reset spring 25, the test probe 11 is contacted with corresponding points on the circuit board 7 to be tested, power supply and test are provided for the circuit board 7 to be tested, the computer connected with the test probe 11 reads the electrical parameters of the circuit board 7 to be tested, so that the test is completed.

[0053] The touch pen 51 of the touch test assembly 5 automatically touches the spring type touch button 71 in the embodiment of the application, the lateral driving member 53 drives the touch pen 51 to laterally touch the spring type touch button 71 in the test process, so that the spring type touch button 71 is triggered, the electrical function of the spring type touch button 71 is tested, and the optical fiber probe 32 on the test plate 3 will not block the detection of the LED lamp bead 72 at the center of the spring type touch button 71, so that the light emitting condition of the LED lamp bead 72 is detected, the trigger test of the spring type touch button 71 and the light emitting test of the LED lamp bead 72 are compatible with each other and do not affect each other, and the test efficiency can be improved.

[0054] The above is not any limitation on the technical range of the application, any modification, equivalent change and modification made to the above embodiment according to the technical essence of the application still belongs to the range of the technical scheme of the application.

Claims

1. A circuit board testing machine for side touch spring type touch buttons, characterized by, The utility model provides a test platform, positioning fixture, test board, lifting assembly and touch test component, the test platform is provided with a plurality of test probes, the test probe extends to the positioning fixture, the positioning fixture places the circuit board to be measured and sets up in the test platform in the floating mode, the test board is set up in the positioning fixture through the lifting assembly, the test board is pressed down the circuit board to be measured through the lifting assembly to contact the plurality of test probes, the touch test component includes touch pen and lateral drive, the touch pen is set up in the lateral drive in the side of positioning fixture, the touch pen cooperates with the circuit board to be measured after being pressed down and touches the spring type touch button laterally.

2. The circuit board tester of claim 1, wherein, The touch test component further includes a mounting seat, the mounting seat is vertically arranged on the test platform and located on one side of the positioning fixture, the lateral drive is fixed on the mounting seat, a guide hole is formed in the mounting seat, the touch pen is inserted into the guide hole, the middle part of the touch pen is connected with the driving end of the lateral drive through a fixing block, the lateral drive drives the touch pen to move along the guide hole, the capacitive touch head of the touch pen is exposed from the fixing block and arranged towards the positioning fixture.

3. The circuit board tester of claim 2, wherein, A plurality of touch pens and a plurality of lateral drives are arranged side by side on the mounting seat, and each touch pen is connected with one lateral drive.

4. The circuit board tester of claim 3, wherein, The lateral drive is a pen-shaped cylinder.

5. The circuit board tester of claim 1, wherein, The test platform is provided with a support frame for mounting the lifting assembly, the lifting assembly includes a lifting cylinder and a lifting guide rod, the lifting cylinder is fixed on the fixed plate of the support frame and arranged towards the positioning fixture, the test board is fixed with the driving end of the lifting cylinder, the test board is movably connected with the horizontal plate of the support frame through the lifting guide rod, and the lifting cylinder drives the test board to move up and down along the lifting guide rod.

6. The circuit board tester of claim 1, wherein, A visual detection component is arranged on the test board, the visual detection component includes a light shielding plate and a fiber probe, the light shielding plate is arranged around the edge of the test board, and the fiber probe is mounted on the test board and located above the LED lamp bead of the circuit board to be measured to detect the light emission of the LED lamp bead in the center of the spring type touch button.

7. The circuit board tester of claim 6, wherein, A plurality of jacks are arranged on the test board, the plurality of jacks are arranged at intervals on the lower end surface of the test board and arranged towards the positioning fixture, and the lower end surface of the jack cooperates with the circuit board to be measured.

8. The circuit board tester of claim 7, wherein, The jack is an electrically insulated plastic rod.

9. The circuit board tester of claim 1, wherein, A positioning groove is arranged on the positioning fixture, the circuit board to be measured is clamped in the positioning groove, and taking and placing grooves are arranged on both sides of the positioning groove.

10. The circuit board tester of claim 9, wherein, A plurality of through holes matched with the plurality of test probes are arranged through the groove bottom of the positioning groove, the lower end of the test probe is fixed on the test platform, the upper end of the test probe is arranged in the through hole, and the test probe is in contact with the circuit board to be measured after being pressed down through the through hole.

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