Contact detection device for failure analysis of automobile production line

Abstract

The utility model discloses a contact detection device for failure analysis of an automobile production line, which belongs to the line detection jig technology and comprises a universal meter and a contact connection mechanism, and a connection lead is inserted into the surface of the universal meter. The contact connecting mechanism comprises an alligator clip electrically connected to one end of the connecting wire, the bottom of the alligator clip is rotatably connected with a conductive column, and the surface of the conductive column is fixedly connected with a conductive pen; detection personnel can freely select the connection mode with the line contact through the contact connection mechanism so as to meet the detection requirements under different space limitations, and the detection personnel do not need to store various types of contact connection structures, so that the detection personnel can store and use the contact connection structures more conveniently.

Description

Technical Field

[0001] This utility model relates to the field of circuit testing fixture technology, specifically to a contact testing device for failure analysis of automobile production lines. Background Technology

[0002] In automotive production lines, wire failure typically refers to problems with wiring harnesses or wire connections, leading to circuit interruptions or poor signal transmission. These problems can be caused by various factors, such as poor contact, wear, or breakage. Wire failure directly impacts vehicle performance and safety, potentially causing malfunctions, signal transmission errors, or short circuits. Currently, multimeters, along with wires and alligator clips, are commonly used contact testing fixtures for wire failure analysis in automotive production lines.

[0003] Currently, a Chinese patent discloses an automotive circuit detector (authorization announcement number CN206594248U). When using this device to detect the voltage of the power supply circuit, the probe is connected to the detection terminal of the electrical equipment, and the clamping end is connected to the negative terminal of the battery. At this time, the power supply circuit forms a closed loop through the detector. The tester toggles the selector switch to select a shunt resistor close to that of the electrical equipment and reads the voltage value displayed on the screen. If the read value is the power supply voltage, it indicates that the power supply circuit is normal; if the read value is lower than the power supply voltage but greater than 0V, it indicates that there is a loose connection fault in the power supply circuit; if the read value is 0V, it indicates that the power supply circuit is open. This device can accurately determine whether there is a loose connection or an open circuit in the power supply circuit.

[0004] Since the above device uses a wire clamp on one end and a terminal block on the other end to detect the line contact, it is only suitable for use when the line contact is in an unobstructed environment. When the line contact is in a narrow position such as inside the junction box socket, the wire clamp will not have enough space to hold the line contact, making it inconvenient to use.

[0005] Based on this, this utility model designs a contact detection device for failure analysis of automobile production lines to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, this utility model provides a contact detection device for failure analysis of automobile production lines.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A contact detection device for failure analysis of an automobile production line includes: a multimeter and a contact connection mechanism, wherein connecting wires are plugged into the surface of the multimeter.

[0009] Furthermore, the contact connection mechanism includes an alligator clip electrically connected to one end of a connecting wire, a conductive post rotatably connected to the bottom of the alligator clip, and a conductive pen fixedly connected to the surface of the conductive post.

[0010] Furthermore, the bottom of the alligator clip has an installation cavity, the conductive post is rotatably connected to the inside of the installation cavity, and the conductive pen is disposed inside the installation cavity.

[0011] Furthermore, the alligator clip has a transmission cavity that communicates with the mounting cavity. Both ends of the conductive post extend into the transmission cavity. The surface of the conductive post has a positioning groove, and a spring piece that is fixedly connected to the transmission cavity is engaged inside the positioning groove.

[0012] Furthermore, there are two positioning slots, and the spring piece engages with the positioning slot below.

[0013] Furthermore, the vertical cross-sectional shape of the positioning groove is an isosceles triangle, the vertical cross-sectional shape of the spring piece is V-shaped, and the corners of the positioning groove and the spring piece are rounded.

[0014] Furthermore, the center points of the two positioning grooves and the center line of the conductive column together form an angle of 90 degrees.

[0015] Furthermore, the alligator clip has an adjustment port on its side that communicates with the mounting cavity, and the corners of the adjustment port are rounded.

[0016] Beneficial effects

[0017] The testing personnel can freely choose the connection method with the line contacts through the contact connection mechanism to meet the testing needs under different space constraints, and there is no need for the testing personnel to store multiple types of contact connection structures, making it convenient for the testing personnel to store and use.

[0018] The conductive pen features a concealed installation, which not only reduces the space required for the contact connection mechanism when folded for easier storage by testing personnel, but also utilizes a positioning groove and spring clip positioning method to lock the conductive pen at multiple angles after adjustment. This ensures greater stability during storage and use, making it easier for testing personnel to store and use the pen. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of a contact detection device for failure analysis of an automobile production line.

[0021] Figure 2 This is a schematic diagram of the contact connection mechanism in a contact detection device for failure analysis of an automobile production line.

[0022] Figure 3 This is a cross-sectional schematic diagram of the contact connection mechanism in a contact detection device for failure analysis of an automobile production line.

[0023] Figure 4 This is a partial schematic diagram of the contact connection mechanism in a contact detection device for failure analysis of an automobile production line.

[0024] The labels in the diagram represent:

[0025] 100. Multimeter; 200. Connecting wire; 300. Contact connection mechanism; 310. Alligator clip; 311. Mounting cavity; 312. Transmission cavity; 313. Adjustment port; 320. Conductive post; 321. Positioning groove; 330. Conductive pen; 340. Spring. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] The present invention will be further described below with reference to the embodiments.

[0028] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-4 A contact detection device for failure analysis of an automobile production line includes: a multimeter 100 and a contact connection mechanism 300. A connecting wire 200 is inserted into the surface of the multimeter 100, and the other end of the connecting wire 200 is electrically connected to a plug that matches the socket.

[0029] The Multimeter 100 is a multifunctional electrical measuring instrument that utilizes electrical principles such as electromagnetic induction and Ohm's law. By selecting different measurement ranges and scales, it converts measured quantities such as current, voltage, and resistance into a small DC current suitable for meter display, thereby enabling the measurement of various electrical quantities. Its structure is complex but its design is ingenious, and it is widely used in various measurement tasks in the electronics field.

[0030] Common multimeter 100 models include, but are not limited to, the following structures:

[0031] The meter head, also known as the measuring head, is the core component of the multimeter 100, used to display measurement results. Inside the meter head is a coil and a magnetic sensing element. When current passes through the coil, the magnetic sensing element induces a voltage proportional to the current. This voltage is amplified by the meter head and displayed as the measured value. The dial on the meter head is printed with various symbols, scale lines, and numerical values ​​to indicate different measurement items and ranges.

[0032] Measurement Circuit: Depending on the measurement function, the multimeter 100 contains multiple measurement modules, such as DC current measurement, DC voltage measurement, AC voltage measurement, and resistance measurement. These modules are switched via different switches to select the corresponding measurement range. The measurement circuit is responsible for converting various measured quantities (such as current, voltage, and resistance) into a small DC current suitable for meter measurement.

[0033] Conversion circuit: Multimeter 100 usually has multiple ranges, and the conversion circuit is responsible for amplifying or reducing the measurement signal to a range suitable for the meter display.

[0034] Power supply and switching section: This section provides power to the measurement circuit, including battery or external power. The selector switch is used to select different measurement modes such as voltage, current, and resistance, as well as to switch between different measurement ranges.

[0035] Protection circuit: For safety, multimeter 100 is usually equipped with overload protection and short circuit protection to prevent damage caused by misoperation or abnormal measurement object.

[0036] Probe jacks: Used to connect to two points of the circuit under test for measurement. When using, insert the plug of one of the connecting wires 200 into the jack marked "+" and insert the plug of the other connecting wire 200 into the jack marked "-".

[0037] When using it, first set the multimeter 100 to the resistance measurement range, then connect the two contact connection mechanisms 300 to the two contacts at the two ends of the corresponding circuit. If the resistance value is zero or close to zero, it indicates that the circuit is conducting well; if the resistance value reaches the upper limit of the digital display or pointer, it indicates that there is a circuit failure or other fault.

[0038] like Figure 2 , Figure 3 and Figure 4As shown, the contact connection mechanism 300 includes an alligator clip 310 electrically connected to one end of the connecting wire 200. A conductive post 320 is rotatably connected to the bottom of the alligator clip 310, and a conductive pen 330 is fixedly connected to the surface of the conductive post 320. A mounting cavity 311 is provided at the bottom of the alligator clip 310, and the conductive post 320 is rotatably connected to the inside of the mounting cavity 311. The conductive pen 330 is disposed inside the mounting cavity 311. This allows the conductive pen 330 to be hidden inside the alligator clip 310 when not in use, which not only reduces the size of the entire contact connection mechanism 300, but also reduces the burden on the testing personnel in storing or using the alligator clip 310. An adjustment port 313 communicating with the mounting cavity 311 is provided on the side end of the alligator clip 310. The corners of the adjustment port 313 are rounded, which reduces the difficulty for the testing personnel in removing the conductive pen 330.

[0039] When using this utility model, if the tester needs to stably connect the connecting wire 200 to the line contact by clamping, the tester only needs to press open the alligator clip 310 and stably clamp the alligator clip 310 on the line contact. At this time, the connecting wire 200 can establish a path with the line contact through the alligator clip 310, and the tester can then carry out the subsequent resistance test normally.

[0040] When the tester needs to test the circuit contacts that are difficult to hold with the alligator clip 310, the tester only needs to rotate the conductive pen 330 out of the mounting cavity 311 by 90 degrees, and then connect the conductive pen 330 to the circuit contact. At this time, the connecting wire 200 establishes a circuit with the circuit contact through the alligator clip 310, conductive post 320 and conductive pen 330, and the tester can then carry out the subsequent resistance test normally.

[0041] Compared to existing contact connection structures, the contact connection mechanism 300 allows testing personnel to freely choose the connection method with the circuit contacts to meet testing needs under different space constraints. Furthermore, it eliminates the need for testing personnel to store multiple types of contact connection structures, making storage and use more convenient.

[0042] It should be noted that the multimeter 100, connecting wire 200, alligator clip 310, and conductive pen 330 mentioned above are all devices with relatively mature existing technology. Specific models can be selected according to actual needs. The multimeter 100 can be powered by its built-in power supply or by AC power; the specific power supply method should be selected depending on the situation, and will not be elaborated upon here.

[0043] In some embodiments, such as Figure 4As shown, in a preferred embodiment of this utility model, the alligator clip 310 has a transmission cavity 312 communicating with the mounting cavity 311. Both ends of the conductive post 320 penetrate into the transmission cavity 312. The surface of the conductive post 320 has a positioning groove 321. The inner side of the positioning groove 321 is engaged with a spring piece 340 fixedly connected to the transmission cavity 312. This can stably lock the unused conductive pen 330 in the mounting cavity 311. There are two positioning grooves 321. The spring piece 340 is engaged with the lower positioning groove 321, which can provide multi-angle... The conductive pen 330 is locked to meet the needs of the testing personnel. The vertical cross-sectional shape of the positioning groove 321 is an isosceles triangle, and the vertical cross-sectional shape of the spring piece 340 is V-shaped. The corners of the positioning groove 321 and the spring piece 340 are rounded, which can reduce the burden of connecting or separating the positioning groove 321 and the spring piece 340. The center point of the two positioning grooves 321 and the axis of the conductive post 320 together form an angle of 90 degrees, which can limit the adjustment range of the conductive pen 330, so that the testing personnel can easily and accurately adjust the angle of the conductive pen 330.

[0044] When the conductive pen 330 is initially placed inside the mounting cavity 311, the spring piece 340 can limit the conductive post 320 and the conductive pen 330 inside the mounting cavity 311 through the positioning groove 321 connected thereto. This can reduce the situation where the conductive pen 330 slides randomly during the storage or use of the alligator clip 310, thereby reducing the storage and use burden on the testing personnel.

[0045] When the conductive pen 330 is rotated 90 degrees outward from the mounting cavity 311 by the inspector, the conductive pen 330 drives the conductive post 320 to rotate 90 degrees. The conductive post 320 simultaneously drives the two positioning slots 321 to rotate 90 degrees. During this process, the positioning slot 321, which is engaged with the spring piece 340, gradually separates from the spring piece 340. The other positioning slot 321 gradually rotates towards the spring piece 340. When the conductive pen 330 has just rotated to 90 degrees, the other positioning slot 321 is aligned with the spring piece 340. The spring piece 340 loses its obstruction and quickly returns to its original position. The spring piece 340 is engaged with the other positioning slot 321. At this time, the spring piece 340 locks the conductive post 320 and the conductive pen 330 in this position through the other positioning slot 321. This allows the inspector to operate the conductive pen 330 more stably and further reduces the burden on the inspector.

[0046] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A contact detection device for failure analysis of an automotive production line, comprising: A multimeter (100) has a connecting wire (200) inserted into its surface: characterized in that one end of the connecting wire (200) is electrically connected to a contact connection mechanism (300). The contact connection mechanism (300) includes an alligator clip (310) electrically connected to one end of a connecting wire (200), a conductive post (320) rotatably connected to the bottom of the alligator clip (310), and a conductive pen (330) fixedly connected to the surface of the conductive post (320).

2. The contact detection device for automobile production line failure analysis according to claim 1, characterized in that: The bottom of the alligator clip (310) is provided with an installation cavity (311), the conductive post (320) is rotatably connected to the inside of the installation cavity (311), and the conductive pen (330) is disposed inside the installation cavity (311).

3. The contact detection device for automobile production line failure analysis according to claim 2, characterized in that: The alligator clip (310) has a transmission cavity (312) that communicates with the mounting cavity (311). Both ends of the conductive post (320) extend into the transmission cavity (312). The surface of the conductive post (320) has a positioning groove (321). The inner side of the positioning groove (321) is fitted with a spring piece (340) that is fixedly connected to the transmission cavity (312).

4. The contact detection device for automobile production line failure analysis according to claim 3, characterized in that: There are two positioning slots (321), and the spring piece (340) is engaged with the positioning slot (321) below.

5. The contact detection device for automobile production line failure analysis according to claim 3, characterized in that: The vertical cross-sectional shape of the positioning groove (321) is an isosceles triangle, the vertical cross-sectional shape of the spring piece (340) is V-shaped, and the corners of the positioning groove (321) and the spring piece (340) are rounded.

6. The contact detection device for automobile production line failure analysis according to claim 4, characterized in that: The center points of the two positioning grooves (321) and the axis of the conductive post (320) together form an angle of 90 degrees.

7. The contact detection device for automobile production line failure analysis according to claim 2, characterized in that: The alligator clip (310) has an adjustment port (313) at its side end that communicates with the mounting cavity (311), and the corners of the adjustment port (313) are rounded.

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