A jig structure for testing a washing machine door lock switch plate

Abstract

A kind of jig structure for washing machine door lock switch plate test, including base, slide rail, display control module, platform frame, carrier plate and needle plate pressing mechanism.Carrying plate is set on platform frame, and there are position avoiding groove and limiting groove in its test groove, to ensure that product microswitch is accurately closed.Needle plate pressing mechanism contains cylinder, flange linear ball bushing and guide shaft, cylinder drives needle plate fixing plate to press down, so that PIN needle contacts welding point.Display control module contains LED display panel and key control board, for displaying test results and controlling operation process.The jig improves test efficiency and accuracy, reduces manual operation risk and production cost.

Description

Technical Field

[0001] This utility model relates to a fixture structure, and more particularly to a fixture structure for testing the door lock switch plate of a washing machine. Background Technology

[0002] In the traditional testing process for washing machine door lock switch boards, the board is typically disassembled first, followed by functional testing. This functional testing primarily involves manually plugging and unplugging the connector wiring harness and manually toggling the microswitch. However, manually plugging and unplugging the connector wiring harness can easily lead to misalignment and damage to the PCBA connector pins, and may even cause the connectors to crack. Furthermore, manually toggling the microswitch during testing is prone to damage due to improper operation. Therefore, there is an urgent need to improve the existing testing method for washing machine door lock switch boards to address these problems. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A fixture structure for testing a washing machine door lock switch panel includes a base, a slide rail, a display control module, a platform, a carrier plate, and a needle plate pressing mechanism. The slide rail, display control module, and needle plate pressing mechanism are all fixed on the base. The platform is mounted on a slider of the slide rail and can slide along the slide rail. The carrier plate is fixed on the platform and has a test slot for placing the product to be tested. The test slot has several clearance slots, each of which penetrates the carrier plate, and each clearance slot has several limiting slots communicating with it on its side.

[0004] Preferably, the needle plate pressing mechanism includes a bracket, a top plate, a cylinder, a needle plate fixing plate, and a needle plate. The top plate is fixed to the base by the bracket and has a hollow area. The cylinder is fixed to the top plate and its output end passes through the hollow area of ​​the top plate and connects to the needle plate fixing plate. The needle plate is fixed to the needle plate fixing plate.

[0005] Preferably, the needle plate pressing mechanism further includes flanged linear ball bushings and guide shafts. Four flanged linear ball bushings are provided and fixed at the four corners of the top plate. The guide shafts are inserted into the inner holes of the flanged linear ball bushings, forming a clearance fit. The guide shafts can slide up and down inside the flanged linear ball bushings. The lower end of the guide shaft is fixed to the needle plate fixing plate. When the cylinder drives the needle plate fixing plate to move up and down, the guide shaft slides inside the flanged linear ball bushing, playing a guiding and stabilizing role, ensuring that the needle plate can be pressed down and raised smoothly and accurately.

[0006] Preferably, the needle plate fixing plate is provided with a plurality of through slots.

[0007] Preferably, the display control module includes an LED display panel and a button control panel, and the display screen is used to display test results and related information.

[0008] Preferably, the button control panel is provided with a plurality of operation buttons, which are used to control the operation process of the fixture.

[0009] This utility model has the following beneficial effects: This invention uses a cylinder to control the downward pressure of the pin plate, causing the PIN pins to move downwards and directly contact the solder points of the washing machine door lock switch board. This eliminates the need for manual wire harness insertion and removal, avoiding problems such as PIN misalignment, damage, and cracking of the PCBA connector ports caused by insertion and removal, thus reducing production costs. Simultaneously, the avoidance and limit slots on the carrier board solve the problem of easy damage from manual microswitch operation, enabling automatic microswitch shutdown in panelized mode, improving testing efficiency and product yield. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of a fixture for testing a washing machine door lock switch board according to the present invention. Figure 2 This is a front view of the fixture structure for testing a washing machine door lock switch plate according to this utility model; Figure 3 This is a schematic diagram of the carrier plate of a fixture structure for testing a washing machine door lock switch board according to the present invention; Figure 4 This is a schematic diagram of the needle plate fixing plate of the fixture structure for testing a washing machine door lock switch plate according to this utility model; In the diagram: 1. Base; 2. Slide rail; 3. Display control module; 31. LED display panel; 32. Button control board; 4. Platform frame; 5. Carrier plate; 51. Test slot; 52. Alternating groove; 53. Limiting groove; 6. Needle plate pressing mechanism; 61. Bracket; 62. Top plate; 63. Cylinder; 64. Needle plate fixing plate; 641. Through groove; 65. Needle plate; 66. Flange-mounted linear ball bushing; 67. Guide shaft. Detailed Implementation

[0011] The present invention will be further described below with reference to the accompanying drawings.

[0012] like Figures 1 to 4 As shown, a fixture structure for testing a washing machine door lock switch panel includes a base 1, a slide rail 2, a display control module 3, a platform 4, a carrier plate 5, and a needle plate pressing mechanism 6. The slide rail 2, display control module 3, and needle plate pressing mechanism 6 are all fixed to the base 1. The platform 4 is mounted on the slider of the slide rail 2 and can slide along the slide rail 2. The carrier plate 5 is fixed to the platform 4 and is used to place the product to be tested.

[0013] The carrier plate 5 has a test slot 51, and the test slot 51 has several clearance slots 52. Each clearance slot 52 penetrates the carrier plate 5, and each clearance slot 52 has several limiting slots 53 communicating with it on its side. The length of the test slot 51 on the carrier plate 5 is longer than the length of the product to be tested, which facilitates manually pushing the product to be tested forward gently in the test slot 51. The side wall of the limiting slot 53 presses against the micro switch, causing it to close automatically, replacing the traditional manual operation.

[0014] The needle plate pressing mechanism 6 includes a bracket 61, a top plate 62, a cylinder 63, a needle plate fixing plate 64, and a needle plate 65. The top plate 62 is fixed to the base 1 by the bracket 61 and has a hollow area. The cylinder 63 is fixed to the top plate 62, and its output end passes through the hollow area of ​​the top plate 62 and connects to the needle plate fixing plate 64. The needle plate 65 is fixed to the needle plate fixing plate 64. The needle plate pressing mechanism 6 also includes flanged linear ball bushings 66 and guide shafts 67. There are four flanged linear ball bushings 66, which are fixed to the four corners of the top plate 62 by flange bolts. The guide shaft 67 is inserted into the inner hole of the flanged linear ball bushing 66, and a clearance fit is formed between them. The guide shaft 67 can slide up and down inside the flanged linear ball bushing 66, and its lower end is fixed to the needle plate fixing plate 64. The needle plate fixing plate 64 is provided with several through slots 641 for the PIN needles on the needle plate 65 to be pressed down and contact the solder joints of the test plate.

[0015] The display control module 3 includes an LED display panel 31 and a button control board 32. The button control board 32 is equipped with several operation buttons for controlling the operation process of the fixture, such as start, stop, and needle plate pressing and raising. The LED display panel 31 is used to display test results and other relevant information, allowing operators to intuitively understand the test situation.

[0016] In practice, when testing the washing machine door lock switch board using this fixture structure, the tester places the product under test face down in the test slot 51 of the carrier plate 5, ensuring that the micro switch of the product can be accurately locked into the limiting slot 53 of the carrier plate 5. Then, by manually and gently pushing the product under test forward, all micro switches are closed. This is achieved by the guiding and limiting effect of the limiting slot 53 of the carrier plate 5.

[0017] Press the close switch on the button control board 32. At this time, the platform frame 4 drives the carrier plate 5 to move along the slide rail 2 to the test area. Press the lower switch on the button control board 32, and the cylinder 63 starts, driving the needle plate fixing plate 64 to move downward, so that the test PIN needle on the needle plate 65 passes through the through groove of the needle plate fixing plate 64 and accurately contacts the solder pin of the connector port of the product under test, forming an electrical circuit.

[0018] Pressing the test switch on the button control panel 32 initiates a system test of the micro switch's functionality. The test results are displayed in real-time on the LED display panel 31, allowing operators to intuitively determine whether the product is qualified.

[0019] After the test is completed, press the rise switch on the button control board 32 to raise the needle plate 65, and press the release switch on the button control board 32 to move the platform 4 and the carrier plate 5 to the pick-up and drop-off area. Finally, manually push the product under test backward to fully open its microswitches under the action of the limiting groove 53 of the carrier plate 5. Repeat the above steps to continue the test until the test process is completed.

[0020] Throughout the testing process, this fixture structure effectively avoids product damage caused by traditional manual plugging and unplugging of wire harnesses and manual toggling of microswitches, improving testing accuracy and efficiency while reducing production costs.

[0021] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A fixture structure for testing a washing machine door lock switch panel, comprising a base (1), a slide rail (2), and a display control module (3), characterized in that: It also includes a platform frame (4), a carrier plate (5) and a needle plate pressing mechanism (6). The slide rail (2), the display control module (3) and the needle plate pressing mechanism (6) are all fixed on the base (1). The platform frame (4) is installed on the slider of the slide rail (2) and can slide along the slide rail (2). The carrier plate (5) is fixed on the platform frame (4). The carrier plate (5) is provided with a test groove (51). The test groove (51) is provided with several clearance grooves (52). Each clearance groove (52) penetrates the carrier plate (5), and each clearance groove (52) is provided with several limiting grooves (53) communicating with it on its side.

2. The fixture structure for testing a washing machine door lock switch panel according to claim 1, characterized in that: The needle plate pressing mechanism (6) includes a bracket (61), a top plate (62), a cylinder (63), a needle plate fixing plate (64), and a needle plate (65). The top plate (62) is fixed on the base (1) by the bracket (61). The top plate (62) has a hollow area. The cylinder (63) is fixed on the top plate (62), and its output end passes through the hollow area of ​​the top plate (62) and connects to the needle plate fixing plate (64). The needle plate (65) is fixed on the needle plate fixing plate (64).

3. The fixture structure for testing a washing machine door lock switch panel according to claim 2, characterized in that: The needle plate pressing mechanism (6) also includes a flanged linear ball bushing (66) and a guide shaft (67). There are four flanged linear ball bushings (66), which are fixed at the four corners of the top plate (62). The guide shaft (67) is inserted into the inner hole of the flanged linear ball bushing (66) respectively, forming a clearance fit between them. The guide shaft (67) can slide up and down in the flanged linear ball bushing (66). The lower end of the guide shaft (67) is fixed on the needle plate fixing plate (64).

4. The fixture structure for testing a washing machine door lock switch panel according to claim 2, characterized in that: The needle plate fixing plate (64) is provided with several through slots (641).

5. The fixture structure for testing a washing machine door lock switch panel according to claim 1, characterized in that: The display control module (3) includes an LED display panel (31) and a button control panel (32).

6. The fixture structure for testing a washing machine door lock switch panel according to claim 5, characterized in that: The button control panel (32) is equipped with several operation buttons.

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