An LED product wiring harness connection detection device

Abstract

This utility model discloses an LED product wiring harness connection detection device, including a housing with a detection section on the housing. The detection section has a first wiring harness placement slot and a second wiring harness placement slot. A color sensor is located inside the housing, with its sensing end positioned within the first wiring harness placement slot. During wiring harness detection, the wiring harness covers the sensing end. The detection section also has a first terminal and a second terminal. The first wiring harness placement slot is connected to the first terminal, and the second wiring harness placement slot is connected to the second terminal. The first terminal is used to connect to the positive wiring harness of the LED product, and the second terminal is used to connect to the negative wiring harness of the LED product. The color sensor is connected to an indicator light to display the detection result. This LED product wiring harness connection detection device comprehensively judges whether the wiring harness connecting the positive and negative terminals of the LED product is correct by detecting the wiring harness color information and combining it with the LED product's lighting status, preventing defective products from being released and improving production quality and customer satisfaction.

Description

Technical Field

[0001] This utility model relates to the field of wire harness welding inspection technology, specifically to an LED product wire harness connection inspection device. Background Technology

[0002] In the LED product manufacturing process, wire harness soldering is a crucial step to ensure the product's proper power-on function. Given the different polarity requirements of LEDs, and to clearly distinguish the positive and negative terminals, different colored wire harnesses are typically used for soldering. However, in actual operation, workers may reverse the positive and negative wire harnesses of the LED product. Relying on manual inspection to troubleshoot such errors is not only inefficient but also prone to oversight. More seriously, when reversed polarity occurs, workers might reverse the connection again during subsequent LED testing to make the LED light up and pass the test. However, this "normal" lighting achieved through reverse connection does not comply with the LED product's polarity specifications.

[0003] Once such reverse-connected LED products are sold to customers, the mismatch between the LED polarity and the wiring harness color will cause the LEDs to fail to light up. This not only affects the customer's normal user experience but also negatively impacts the company's reputation. Therefore, developing a testing device capable of detecting wiring harness soldering errors and preventing defective products from leaving the market is of great significance for improving the production quality and customer satisfaction of LED products. Utility Model Content

[0004] The purpose of this invention is to provide an LED product wiring harness connection detection device. This device detects the wiring harness color information and combines it with the LED product lighting status to comprehensively judge whether the wiring harness connecting the positive and negative terminals of the LED product is correct, thereby preventing defective products from being released and improving production quality and customer satisfaction.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An LED product wiring harness connection detection device includes a housing, a detection section on the housing, a first wiring harness placement slot and a second wiring harness placement slot on the detection section, a color sensor inside the housing, the sensing end of the color sensor being disposed in the first wiring harness placement slot, and the wiring harness covering the sensing end of the color sensor during detection; a first terminal and a second terminal are also provided on the detection section, the first wiring harness placement slot being connected to the first terminal, and the second wiring harness placement slot being connected to the second terminal, the first terminal being electrically connected to the positive wiring harness of the LED product, and the second terminal being electrically connected to the negative wiring harness of the LED product; the color sensor is connected to an indicator light for displaying the detection result.

[0007] Preferably, the indicator lights include good product indicator lights and defective product indicator lights. When the wire harness is connected and the colors match, the good product indicator lights up; when the wire harness is connected but the colors do not match, the defective product indicator lights up.

[0008] Preferably, a power conversion module is also provided inside the housing to convert external AC power into low-voltage DC power required by the device; the detection part is a protrusion provided on the surface of the housing; the first terminal includes a first conductive sheet and a first conductive bolt, the first conductive sheet is connected to the positive terminal of the power conversion module through the first conductive bolt; the second terminal includes a second conductive sheet and a second conductive bolt, the second conductive sheet is connected to the negative terminal of the power conversion module through the second conductive bolt.

[0009] Preferably, a second sensor is also provided inside the housing. The sensing end of the second sensor is disposed in the first wire harness placement slot and is used to detect the presence or absence of the wire harness. When detecting the wire harness, the wire harness covers the sensing end of the second sensor.

[0010] Preferably, the housing further includes a first relay, a second relay, and a time relay;

[0011] The input terminal of the first relay is connected to the output terminal of the color sensor via a wire. The normally open terminal of the first relay is connected to the good product indicator light, and the normally closed terminal is connected to the defective product indicator light.

[0012] The input terminal of the second relay is connected to the output terminal of the second sensor via a wire, and the control terminal of the second relay is connected to the input terminal of the time relay to transmit the signal received by the second sensor to the time relay.

[0013] The control terminal of the time relay is connected to the signal input terminal of the first relay to control the time when the branch it belongs to is disconnected.

[0014] Preferably, the color sensor is of the model ESR-501-RGB, the second sensor is of the model M3, and the first relay and the second relay are both of the model CDZ9-52PL; the time relay is of the model H3Y-2.

[0015] Preferably, a buzzer is also connected in series on the branch where the defective product indicator light is located. When the defective product indicator light is on, the buzzer will beep at the same time to give a reminder.

[0016] Preferably, there are defective product indicator light mounting holes, good product indicator light mounting holes and an indicator switch on the outer shell. The defective product indicator light is installed in the defective product indicator light mounting hole, and the good product indicator light is installed in the good product indicator light mounting hole; the indicator switch is connected to the power conversion module through a wire to control the power on and off of the entire device.

[0017] Preferably, it further includes a barcode reader and a display screen. There is a QR code on the LED product; during detection, the barcode reader first identifies the QR code information. After the scanning is completed, the first terminal and the second terminal are powered on to make the LED product powered on; subsequently, the detected LED product wire harness color information and the current information of the LED product are transmitted to the display screen.

[0018] In the above technical solution, by setting a color sensor and setting the sensing end of the color sensor in the first wire harness placement groove, when the wire harness covers the sensing end of the color sensor, it can identify whether the color of the wire harness matches the preset positive wire harness color, eliminating the error caused by manual visual inspection and improving the accuracy of wire harness color detection. At the same time, the signal detected by the color sensor is connected to the indicator light, and a first relay is set to control the on and off of the indicator light. When the wire harness is connected and the color corresponds, the first relay acts, the normally open terminal closes, and the good product indicator light lights up, indicating that the detection is qualified; when the wire harness is connected but the color does not correspond, the first relay does not act, and the normally closed terminal remains closed, and the defective product indicator light lights up. In addition, a buzzer BUZ is also connected in series on the branch where the defective product indicator light is located. When the defective product indicator light is on, the buzzer will beep at the same time to give a reminder. By combining sound and light, it intuitively reminds the user of the detection result, facilitating the user to promptly discover defective products, preventing defective products from flowing out, and improving the production quality of LED products and customer satisfaction.

[0019] By setting the second sensor and the time relay, when the second sensor detects that the wire harness is connected, the signal is transmitted to the time relay through the second relay. After receiving the signal, the time relay delays for a period of time to conduct. If the wire harness color is in line, the color sensor transmits the detected signal to the first relay. At this time, the first relay closes, and the good product indicator light lights up, avoiding the continuous lighting of the defective product indicator light when there is no wire harness connected.

[0020] By connecting the first and second terminals to the power conversion module, when testing the LED product, the end of the positive terminal of the LED product contacts the first conductive plate, and the end of the negative terminal contacts the second conductive plate. Current flows from the positive terminal of the power conversion module, through the first conductive bolt and the first conductive plate of the first terminal, to the positive terminal of the LED product, and then from the negative terminal of the LED product, through the second conductive plate and the second conductive bolt of the second terminal, back to the negative terminal of the power conversion module, forming a complete circuit. This ensures that the LED product can be lit with the correct polarity, guaranteeing the normal operation of the LED product during testing.

[0021] By combining the color of the positive electrode harness with the lighting status of the LED product, the problem of detecting reversed harness connections has been solved. Even in special cases where the positive and negative electrode harnesses of the LED product are reversed, and the negative electrode harness of the LED product is placed in the first harness placement slot during testing, the detection device can still accurately identify the problem. Although it meets the requirements from a color inspection perspective, the LED product cannot light up properly because the harness is reversed. This allows any product with harness connection problems to be detected promptly and accurately, improving the reliability of the detection system. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a flowchart of the present invention;

[0024] Figure 3 This is the circuit diagram and schematic diagram of this utility model;

[0025] In the diagram, 1 is the housing; 11 is the indicator switch; 2 is the detection unit; 21 is the first wire harness placement slot; 22 is the second wire harness placement slot; 23 is the first terminal; 231 is the first conductive sheet; 232 is the first conductive bolt; 24 is the second terminal; 241 is the second conductive sheet; 242 is the second conductive bolt; 25 is the sensing end of the color sensor; 26 is the sensing end of the second sensor; 3 is the power conversion module; S1 is the color sensor; S2 is the second sensor; KA1 is the first relay; KA2 is the second relay; KT1 is the time relay; LED1 is the good product indicator; LED2 is the defective product indicator; and BUZ is the buzzer. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] like Figures 1 to 3As shown, this utility model provides an LED product wiring harness connection detection device, including a housing 1, on which a detection part 2 is provided. The detection part 2 is a protrusion provided on the surface of the housing 1. A first wiring harness placement groove 21 and a second wiring harness placement groove 22 are arranged horizontally side-by-side on the detection part 2. The first wiring harness placement groove 21 is used to place the positive electrode wiring harness of the LED product, and the second wiring harness placement groove 22 is used to place the negative electrode wiring harness of the LED product. The detection part 2 also has a first terminal 23 and a second terminal 24. One end of the first wiring harness placement groove 21 is connected to the first terminal 23, and one end of the second wiring harness placement groove 22 is connected to the second terminal 24. The first terminal 23 is electrically connected to the positive electrode wiring harness of the LED product, and the second terminal 24 is electrically connected to the negative electrode wiring harness of the LED product, used to detect whether the LED product can light up normally.

[0028] A power conversion module 3 is provided on the PCB board to convert external 220V AC power into 24V low-voltage DC power required by the device. The first terminal 23 consists of a first conductive piece 231 and a first conductive bolt 232. The first conductive piece 231 is connected to the positive terminal of the power conversion module 3 via the first conductive bolt 232. The second terminal 24 consists of a second conductive piece 241 and a second conductive bolt 242. The second conductive piece 241 is connected to the negative terminal of the power conversion module 3 via the second conductive bolt 242. When testing the LED product, the wire harness corresponding to the positive terminal of the LED product is placed in the first wire harness placement slot 21, and the negative terminal wire harness of the LED product is placed in the second wire harness placement slot 22, such that the end of the positive terminal wire harness is in contact with the first conductive piece 231, and the end of the negative terminal wire harness is in contact with the second conductive piece 241. Current flows out from the positive terminal of the power conversion module 3, through the first conductive bolt 232 and the first conductive piece 231 of the first terminal 23, to the positive terminal harness of the LED product, and then flows out from the negative terminal harness of the LED product, through the second conductive piece 241 and the second conductive bolt 242 of the second terminal 24, back to the negative terminal of the power conversion module 3, forming a complete circuit. If the LED product lights up, the polarity of the LED product is correctly connected; if the LED product does not light up, the polarity of the LED product is incorrectly connected.

[0029] A color sensor S1, model ESR-501-RGB, is also installed on the PCB board. The sensing end 25 of the color sensor S1 is located in the first wire harness placement slot 21. When detecting the color of the wire harness, the wire harness must cover the sensing end 25 of the color sensor. Before using the color sensor S1, the corresponding color information needs to be pre-entered. This is done by placing the wire harness of the corresponding color in the first wire harness placement slot 21, so that the lamp head of the color sensor shines on the wire harness. The wavelength of the light reflected from the wire harness is recorded in the color sensor S1, completing the color information entry. Afterwards, the positive wire harness of the LED product to be tested is connected. The color sensor S1 compares the wavelength of the reflected light from the detected wire harness color with the initially entered color wavelength information to determine whether the wire harness color is correct.

[0030] Furthermore, by combining the color of the positive electrode harness with the lighting status of the LED product, the problem of detecting reversed harness connections is solved. Even in special cases where the positive and negative electrode harnesses of the LED product are reversed, and the negative electrode harness of the LED product is placed in the first harness placement slot 21 during testing, the detection device can still accurately identify the problem. Although the color inspection may meet the requirements, the LED product cannot light up properly due to the reversed harness connection. This ensures that any product with harness connection problems can be detected promptly and accurately, improving the reliability of the detection device.

[0031] A first relay KA1, model CDZ9-52PL, is also installed on the PCB board. The input terminal of the first relay KA1 is connected to the output terminal of the color sensor S1 via a wire. The output terminal of the first relay KA1 is connected to an indicator light to display the detection result. The indicator light includes a good product indicator LED1 and a defective product indicator LED2. The normally closed terminal of the first relay KA1 is connected to the defective product indicator LED2, and the normally open terminal of the first relay KA1 is connected to the good product indicator LED1. When the wire harness color matches, the first relay KA1 receives a signal and controls the normally open terminal to conduct, and the good product indicator LED1 lights up; when the wire harness is connected but the color does not match, the first relay KA1 does not receive a signal, maintains the original state, and the normally closed terminal is conducted, and the defective product indicator LED2 lights up.

[0032] The PCB board also includes a second sensor S2 (model M3), a second relay KA2 (model CDZ9-52PL), and a time relay KT1 (model H3Y-2). The sensing end 26 of the second sensor is also located in the first wire harness placement slot 21 to detect the presence of a wire harness. During detection, the wire harness must cover the sensing end 26 of the second sensor. The output of the second sensor S2 is connected to the input of the second relay KA2. The control end of the second relay KA2 is connected to the input of the time relay KT1 via a wire. The control end of the time relay KT1 is connected to the signal input of the first relay KA1. When the second sensor S2 detects a wire harness connection, it transmits a sensing signal to the second relay KA2, which then transmits the signal to the time relay KT1. After receiving the signal, the time relay KT1 delays for a period before conducting. If the wire harness color matches, the color sensor S1 transmits the detected signal to the first relay KA1, at which point the first relay KA1 closes, and the good product indicator LED1 lights up. By setting a second sensor S2 and a time relay KT1, the defective product indicator LED2 is prevented from continuously lighting up when the wireless beam is connected.

[0033] In this embodiment, a buzzer BUZ is connected in series on the branch where the defective product indicator LED2 is located. When the defective product indicator LED2 is lit, the buzzer BUZ will simultaneously sound as a reminder. The housing 1 is provided with mounting holes for the defective product LED2 indicator, the good product LED1 indicator, and an indicator switch 11. The defective product LED2 indicator is installed in the mounting hole for the defective product LED2 indicator, and the good product LED1 indicator is installed in the mounting hole for the good product LED1 indicator. The indicator switch 11 is connected to the power conversion module 3 via a wire to control the power supply of the entire device.

[0034] In a preferred embodiment, the device further includes a barcode reader and a display screen, and a QR code is affixed to the LED product. During detection, the barcode reader first identifies the QR code information, and after scanning, it powers on the first terminal 23 and the second terminal 24 to power on the LED product. Subsequently, the device transmits the detected LED product color information and the detected current information to the display screen for display, enabling the wire harness polarity soldering error detection device to automatically detect the wire harness connection status and color information, determine whether the wire harness soldering is correct, and improve the production quality of LED products and customer satisfaction.

[0035] The usage process of this utility model:

[0036] 1. First, color information is entered. Connect the external power supply and turn on the indicator switch 11. Place the positive wire harness of the LED product with the correct color in the first wire harness placement slot 21 of the detection unit 2, so that the lamp head of the color sensor shines on the wire harness. The wavelength of the light generated by the wire harness reflection is recorded in the color sensor S1, and the color information is entered.

[0037] 2. After color information entry is complete, testing is performed. First, connect the positive wire harness of the LED product to be tested to the first terminal 23 and the negative wire harness to the second terminal 24. When connecting the wire harness, it must completely cover the sensing terminals 26 of the color sensor S1 and the second sensor S2. After the second sensor S2 detects the wire harness connection, it transmits the signal to the second relay KA2. The second relay KA2 then transmits the signal to the time relay KT1. Upon receiving the signal, the time relay KT1 enters a preset delay stage. Simultaneously, the color sensor S1 detects the color of the positive wire harness and compares the wavelength of the reflected light from the detected positive wire harness with the wavelength information of the reflected light from the initially entered color. If the positive wire harness is connected and the color matches, the first relay KA1 activates, its normally open terminal closes, and the good product indicator LED1 lights up, indicating that the test is qualified. If the positive wire harness is connected but the color does not match, the first relay KA1 does not activate, its normally closed terminal remains closed, the defective product indicator LED2 lights up, and the buzzer BUZ connected in series with the defective product indicator LED2 branch sounds an alarm, indicating that the test is unqualified.

[0038] At this point, the barcode reader identifies the QR code information of the LED product. After scanning, the power conversion module 3 supplies power to the LED product through the first terminal 23 and the second terminal 24, causing the LED product to light up, indicating that the positive and negative terminals of the LED product are correctly connected. The device also transmits the detected color information of the LED product wiring harness and the current information of the LED product to the display screen for display. The operator can view detailed test data on the display screen. After the test is completed, the wiring harness is removed from the wiring harness placement slot in the test section 2, ready for the next test. After all tests are completed, the indicator switch 11 is turned off and the power cord is disconnected.

[0039] This embodiment is merely an illustration of the concept and implementation of this utility model, and is not intended to limit it. Under the concept of this utility model, the technical solution without substantial changes is still within the protection scope.

Claims

1. An LED product wiring harness connection detection device, comprising a housing, characterized in that, The housing has a detection section, which includes a first wire harness placement slot and a second wire harness placement slot. A color sensor is located inside the housing, with its sensing end positioned within the first wire harness placement slot. When detecting a wire harness, the wire harness covers the sensing end of the color sensor. The detection section also includes a first terminal and a second terminal. The first wire harness placement slot is connected to the first terminal, and the second wire harness placement slot is connected to the second terminal. The first terminal is electrically connected to the positive wire harness of the LED product, and the second terminal is electrically connected to the negative wire harness of the LED product. The color sensor is connected to an indicator light to display the detection results.

2. The LED product wiring harness connection detection device as described in claim 1, characterized in that, The indicator lights include good product indicator lights and defective product indicator lights. When the wire harness is connected and the colors match, the good product indicator light will light up; when the wire harness is connected but the colors do not match, the defective product indicator light will light up.

3. The LED product wiring harness connection detection device as described in claim 2, characterized in that, Inside the housing, a power conversion module is also provided to convert external AC power into low-voltage DC power required by the device; the detection part is a protrusion on the surface of the housing; the first terminal includes a first conductive sheet and a first conductive bolt, the first conductive sheet is connected to the positive terminal of the power conversion module through the first conductive bolt; the second terminal includes a second conductive sheet and a second conductive bolt, the second conductive sheet is connected to the negative terminal of the power conversion module through the second conductive bolt.

4. The LED product wiring harness connection detection device as described in claim 3, characterized in that, A second sensor is also provided inside the housing. The sensing end of the second sensor is disposed in the first wire harness placement slot and is used to detect the presence or absence of the wire harness. When detecting the wire harness, the wire harness covers the sensing end of the second sensor.

5. The LED product wiring harness connection detection device as described in claim 4, characterized in that, The housing also contains a first relay, a second relay, and a time relay; The input terminal of the first relay is connected to the output terminal of the color sensor via a wire. The normally open terminal of the first relay is connected to the good product indicator light, and the normally closed terminal is connected to the defective product indicator light. The input terminal of the second relay is connected to the output terminal of the second sensor via a wire, and the control terminal of the second relay is connected to the input terminal of the time relay to transmit the signal received by the second sensor to the time relay. The control terminal of the time relay is connected to the signal input terminal of the first relay to control the time when the branch it belongs to is disconnected.

6. The LED product wiring harness connection detection device as described in claim 5, characterized in that, The color sensor is model ESR-501-RGB, the second sensor is model M3, the first relay and the second relay are both model CDZ9-52PL; the time relay is model H3Y-2.

7. The LED product wiring harness connection detection device as described in claim 2, characterized in that, A buzzer is also connected in series on the branch where the defective product indicator light is located. When the defective product indicator light is on, the buzzer will sound simultaneously to remind the user.

8. The LED product wiring harness connection detection device as described in claim 7, characterized in that, The housing is provided with mounting holes for defective product indicator lights, mounting holes for good product indicator lights, and an indicator switch. The defective product indicator lights are installed in the defective product indicator light mounting holes, and the good product indicator lights are installed in the good product indicator light mounting holes. The indicator switch is connected to the power conversion module via a wire to control the power supply of the entire device.

9. The LED product wiring harness connection detection device as described in any one of claims 1 to 8, characterized in that, It also includes a barcode reader and a display screen. The LED product has a QR code. During testing, the barcode reader first identifies the QR code information. After scanning the code, it powers on the first and second terminals to power on the LED product. Then, it transmits the LED product wiring harness color information and LED product current information detected by the device to the display screen.

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