TDR impedance tester device for wire harness

Abstract

The utility model discloses a TDR impedance tester device for a wire harness, and relates to the technical field of cable detection. Comprising a shell, a power supply assembly is installed in the shell, a clamping mechanism is installed on the outer wall of the shell, and the clamping mechanism comprises a fixing cylinder. The top of the shell is provided with a plurality of uniformly distributed positive electrode connectors, the bottom of the shell is provided with a plurality of uniformly distributed fixing cylinders, the bottom ends of the two sides of the opposite surfaces of the outer walls of the fixing cylinders are provided with clamping holes, the bottoms of the fixing cylinders are inserted with negative electrode connecting wires, and the tops of the two sides of the opposite surfaces of the outer walls of the negative electrode connecting wires are provided with clamping columns. And the clamping holes are matched with the clamping columns, and the negative connector is mounted at the bottom end of the negative connecting wire, so that the detection wire can be fixed conveniently, and the circuit is prevented from falling off during detection.

Description

Technical Field

[0001] The utility model relates to the technical field of cable detection, in particular to a TDR impedance tester device for a wire harness. Background Art

[0002] TDR, or time domain reflectometry, was mainly used in the communications industry in the early days to detect the breakpoints of communications cables, so it is also called a "cable detector". TDR sends a pulse or step signal to the transmission path. When the impedance changes in the transmission path, part of the energy will be reflected and the remaining energy will continue to be transmitted. As long as the amplitude of the transmitted wave is known and the amplitude of the reflected wave is measured, the impedance change can be calculated.

[0003] A TDR test device for a wiring harness with publication number CN208026798U has at least the following defects during use:

[0004] During use, the above device cannot quickly clamp and fix the detection harness, so the harness is prone to fall off during the detection process, resulting in detection failure. Therefore, a TDR impedance tester device that can clamp and fix the harness is urgently needed. Utility Model Content

[0005] The purpose of the utility model is to provide a TDR impedance tester device for a wiring harness to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a TDR impedance tester device for a wiring harness, comprising a shell, a power supply component is installed inside the shell, a clamping mechanism is installed on the outer wall of the shell, the clamping mechanism comprises a fixing cylinder, a plurality of fixing cylinders are provided and are evenly installed on the bottom of the shell, a spring is fixedly connected to the top of the inner part of the fixing cylinder, a positive electrode connecting wire is installed on the top of the fixing cylinder, a resistor is fixedly connected to the bottom end of the positive electrode connecting wire, clamping holes are respectively provided at the bottom ends of both sides of the opposite surfaces of the outer wall of the fixing cylinder, a negative electrode connecting wire is plugged into the bottom of the fixing cylinder, and the two ends of the opposite surfaces of the outer wall top of the negative electrode connecting wire are respectively fixedly connected with clamping columns, the clamping columns and the clamping holes, and the top of the negative electrode connecting wire is fixedly connected with an iron block.

[0007] Preferably, a fixing plate is threadedly connected to one side of the shell, a monitoring mechanism is installed on a side of the shell away from the fixing plate, and the monitoring mechanism includes a heat dissipation hole, which is opened at the top of one side of the outer wall of the shell.

[0008] Preferably, a display screen and a controller are respectively mounted on the top and bottom of one side of the housing opposite to the fixing plate.

[0009] Preferably, the power supply assembly includes a circuit board and a battery, and the circuit board and the battery are respectively installed at the top and bottom ends of the inner part of the shell, and the circuit board, the battery, the display screen and the controller are electrically connected in sequence.

[0010] Preferably, a plurality of evenly distributed positive electrode connectors are installed on the top of the housing, a negative electrode connector is installed on the bottom end of the negative electrode connecting line, and the positive electrode connector is matched with the corresponding negative electrode connector.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The TDR impedance tester device for the wiring harness is provided with a plurality of evenly distributed positive electrode connectors installed on the top of a shell, a plurality of evenly distributed fixing cylinders installed on the bottom of the shell, clamping holes are provided at the bottom ends of both sides of opposite surfaces of the outer wall of the fixing cylinder, a negative electrode connecting line is plugged into the bottom of the fixing cylinder, clamping columns are installed at the top ends of both sides of opposite surfaces of the outer wall of the negative electrode connecting line, the clamping holes and the clamping columns are matched, and a negative electrode connector is installed at the bottom end of the negative electrode connecting line, so that the detection line is conveniently fixed and the line is prevented from falling off during detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of a TDR impedance tester device for a wiring harness of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the installation mechanism of the TDR impedance tester device for wiring harness of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the power supply assembly of the TDR impedance tester device for wiring harness of the utility model;

[0016] Figure 4 The utility model is a schematic diagram of the structure of the monitoring mechanism of the TDR impedance tester device for wire harnesses.

[0017] In the figure: 1. shell; 2. monitoring mechanism; 201. display screen; 202. controller; 203. heat dissipation hole; 3. positive electrode connector; 4. negative electrode connector; 5. snap-on mechanism; 501. fixing cylinder; 502. snap-on hole; 503. positive electrode connecting wire; 504. resistor; 505. spring; 506. iron block; 507. snap-on column; 508. negative electrode connecting wire; 6. fixing plate; 7. circuit board; 8. battery. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] TDR, or time domain reflection technology, was mainly used in the communication industry in the early days to detect the breakpoint position of communication cables, so it is also called a "cable detector". TDR sends a pulse or step signal to the transmission path. When the impedance changes in the transmission path, part of the energy will be reflected and the remaining energy will continue to be transmitted. As long as the amplitude of the transmitted wave is known and the amplitude of the reflected wave is measured, the change in impedance can be calculated. The present application installs a number of evenly distributed positive connectors on the top of the shell, installs a number of evenly distributed fixed cylinders on the bottom of the shell, opens snap-in holes at the bottom ends of both sides of the opposite sides of the outer wall of the fixed cylinder, plugs the negative connection line at the bottom of the fixed cylinder, installs snap-in columns at the tops of both sides of the opposite sides of the outer wall of the negative connection line, and the snap-in holes and snap-in columns are adapted to each other. A negative connector is installed at the bottom end of the negative connection line, which is convenient for fixing the detection line to prevent the line from falling off during detection.

[0020] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: a TDR impedance tester device for a wiring harness, comprising a shell 1, a power supply component is installed inside the shell 1, a clamping mechanism 5 is installed on the outer wall of the shell 1, the clamping mechanism 5 comprises a fixed cylinder 501, the fixed cylinder 501 is provided with a plurality of springs 505 fixedly connected to the top of the inner part of the fixed cylinder 501, a positive electrode connecting line 503 is installed on the top of the fixed cylinder 501, a resistor 504 is fixedly connected to the bottom end of the positive electrode connecting line 503, clamping holes 502 are respectively opened at the bottom ends of the opposite sides of the outer wall of the fixed cylinder 501, a negative electrode connecting line 508 is plugged into the bottom of the fixed cylinder 501, and the top of the outer wall of the negative electrode connecting line 508 is fixedly connected to the bottom end of the fixed cylinder 501. The two ends of the opposite surfaces are respectively fixedly connected with clamping columns 507, the clamping columns 507 and the clamping holes 502, and the top of the negative electrode connecting line 508 is fixedly connected with an iron block 506. By installing a number of evenly distributed positive electrode connecting heads 3 on the top of the outer shell 1, and installing a number of evenly distributed fixed cylinders 501 on the bottom of the outer shell 1, clamping holes 502 are provided at the bottom ends of both sides of the opposite surfaces of the outer wall of the fixed cylinder 501, and the negative electrode connecting line 508 is inserted at the bottom of the fixed cylinder 501. The clamping columns 507 are installed on the tops of both sides of the opposite surfaces of the outer wall of the negative electrode connecting line 508, and the clamping holes 502 and the clamping columns 507 are adapted to each other. The negative electrode connecting head 4 is installed at the bottom end of the negative electrode connecting line 508. This is convenient for fixing the detection line to prevent the line from falling off during detection.

[0021] A fixing plate 6 is threadedly connected to one side of the housing 1 , and a monitoring mechanism 2 is installed on the side of the housing 1 away from the fixing plate 6 . The monitoring mechanism 2 includes a heat dissipation hole 203 , which is opened at the top of one side of the outer wall of the housing 1 .

[0022] A display screen 201 and a controller 202 are respectively mounted on the top and bottom of one side of the housing 1 opposite to the fixing plate 6 .

[0023] The power supply assembly includes a circuit board 7 and a battery 8, which are respectively mounted at the top and bottom of the housing 1. The circuit board 7, the battery 8, the display screen 201 and the controller 202 are electrically connected in sequence.

[0024] A plurality of evenly distributed positive electrode connectors 3 are installed on the top of the housing 1 , and a negative electrode connector 4 is installed on the bottom of the negative electrode connecting line 508 . The positive electrode connector 3 and the corresponding negative electrode connector 4 are matched.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A TDR impedance tester device for a wiring harness, comprising a housing (1), characterized in that: A power supply assembly is installed inside the housing (1); a clamping mechanism (5) is installed on the outer wall of the housing (1); the clamping mechanism (5) comprises a fixing cylinder (501); a plurality of fixing cylinders (501) are provided and are evenly installed at the bottom of the housing (1); a spring (505) is fixedly connected to the top of the fixing cylinder (501); a positive electrode connecting wire (503) is installed on the top of the fixing cylinder (501); a resistor (504) is fixedly connected to the bottom end of the positive electrode connecting wire (503); clamping holes (502) are respectively provided at the bottom ends of opposite sides of the outer wall of the fixing cylinder (501); a negative electrode connecting wire (508) is plugged into the bottom of the fixing cylinder (501); clamping posts (507) are respectively fixedly connected to the two ends of the opposite sides of the outer wall top of the negative electrode connecting wire (508); the clamping posts (507) and the clamping holes (502) are connected; and an iron block (506) is fixedly connected to the top end of the negative electrode connecting wire (508).

2. A TDR impedance tester device for a wiring harness according to claim 1, characterized in that: A fixing plate (6) is threadedly connected to one side of the housing (1), and a monitoring mechanism (2) is installed on a side of the housing (1) away from the fixing plate (6). The monitoring mechanism (2) comprises a heat dissipation hole (203), and the heat dissipation hole (203) is provided at the top end of one side of the outer wall of the housing (1).

3. A TDR impedance tester device for a wiring harness according to claim 2, characterized in that: A display screen (201) and a controller (202) are respectively mounted on the top and bottom of one side of the housing (1) opposite to the fixing plate (6).

4. A TDR impedance tester device for a wiring harness according to claim 1, characterized in that: The power supply component comprises a circuit board (7) and a battery (8), wherein the circuit board (7) and the battery (8) are respectively mounted at the top end and the bottom end of the interior of the housing (1), and the circuit board (7), the battery (8), the display screen (201) and the controller (202) are electrically connected in sequence.

5. A TDR impedance tester device for a wiring harness according to claim 1, characterized in that: A plurality of evenly distributed positive electrode connectors (3) are installed on the top of the housing (1), a negative electrode connector (4) is installed on the bottom of the negative electrode connecting line (508), and the positive electrode connector (3) and the corresponding negative electrode connector (4) are compatible.

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