Alloy low-resistance resistor thermoelectric effect testing device

Abstract

The utility model discloses an alloy type low resistance value resistor thermoelectric effect testing device which comprises an alloy base, two sides of the upper end of a heating soldering iron are provided with installation screw grooves, installation screws are installed on the inner walls of the installation screw grooves in an inserted mode, the upper end of a bakelite heat insulation block is fixedly connected with a supporting cushion block, and a PCB is placed at the upper end of the supporting cushion block. According to the thermoelectric effect testing device for the alloy low-resistance resistor, the PCB and the bakelite heat insulation block can be fixedly installed through the installation screw rod and the installation screw groove, heating treatment can be carried out through the heating soldering iron, real-time temperature detection can be carried out through the infrared thermometer, in the detection process, covering protection can be carried out through the protective cover, and the testing efficiency is improved. And the bakelite heat insulation block can be quickly positioned, disassembled and assembled through the positioning installation insertion groove and the positioning installation insertion rod, the heating soldering iron can be positioned and spliced through the splicing insertion groove and the splicing insertion block, independent disassembly, assembly and replacement are facilitated, detection is more stable, and use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of alloy low-resistance resistor testing, in particular to a thermoelectric effect testing device for alloy low-resistance resistors. Background Art

[0002] As the most basic electronic component in electronic circuits, resistors are widely used in various electronic products. With the development of science and technology and the trend of reducing circuit energy consumption, the application end of electronic products has lower and lower demands on the resistance of current detection resistors. Therefore, in the past decade, various resistor manufacturers have continuously developed and launched low-resistance resistors made of alloy materials.

[0003] Due to the variety of alloy materials, each resistor manufacturer will select resistors according to different needs. In the selection of alloy resistor materials, in addition to considering the temperature coefficient characteristics of the material, the inductive reactance characteristics and thermoelectric effect of the material must also be considered. The temperature coefficient characteristics and inductive reactance characteristics are more commonly used resistor characteristics, and can be tested by temperature coefficient test and LCR inductance test. The thermoelectric effect of alloy resistors is a characteristic that is easily overlooked. When some alloy resistor materials are made into resistors and installed on the circuit board, a voltage difference that changes with temperature will be formed between the alloy material and the copper foil of the PCB board. When the temperature at both ends of the resistor is the same, the voltage difference between the copper foil to the alloy and the alloy to the copper foil can offset each other. However, in the actual circuit, due to the actual difference in the PCB boards at both ends of the resistor or the temperature difference caused by the power device during installation, there will be a certain temperature difference at both ends of the resistor. This temperature difference will cause the resistor to produce a certain thermoelectric effect. If the alloy material is not selected properly or the PCB board is not designed reasonably, the thermoelectric effect of the resistor will become larger, thereby affecting the control accuracy of the resistor to the current or voltage. Therefore, the thermoelectric effect test device of the alloy material is a necessary means to reasonably select the alloy material.

[0004] The existing alloy resistor thermoelectric effect detection is inconvenient, and the protection effect is poor, and the parts cannot be replaced independently, which is inconvenient to use. Therefore, a low-resistance alloy resistor thermoelectric effect test device is needed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a thermoelectric effect testing device for alloy low-resistance resistors to solve the problems mentioned in the above background technology that the thermoelectric effect detection of alloy resistors is inconvenient, the protection effect is poor, and the parts cannot be replaced independently, which makes it inconvenient to use.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an alloy low-resistance resistor thermoelectric effect testing device, comprising an alloy base, a bakelite insulation block is installed at the center of the lower end of the inner wall of the alloy base, and a PCB board is installed at the upper end of the bakelite insulation block, a connecting hinge is installed at one edge of the upper end of the alloy base, and a protective cover is installed on the other side of the connecting hinge, magnetic blocks are embedded and installed at the upper and lower edges of the alloy base and the protective cover, and an infrared thermometer is installed at the center of the upper end of the protective cover, a positioning installation rod is fixedly connected to the lower end of the inner wall of the alloy base, and the positioning installation rod is inserted and installed in the positioning installation slot, and the positioning installation slot It is opened on both sides of the lower end of the bakelite insulation block, and splicing slots are opened on both sides of the inner wall of the bakelite insulation block, the inner walls of the splicing slots are plugged with splicing blocks, and a heating iron is fixedly connected between the splicing blocks, the lower end of the heating iron is fixedly connected with an auxiliary positioning block, and the auxiliary positioning block is plugged and installed with the auxiliary positioning slot, the auxiliary positioning slot is opened at the center position of the lower end of the inner wall of the alloy base, installation screw grooves are opened on both sides of the upper end of the heating iron, and the inner walls of the installation screw grooves are plugged and installed with installation screws, the upper end of the bakelite insulation block is fixedly connected with a support pad, and a PCB board is placed on the upper end of the support pad, and the installation screw is plugged and installed with the support pad and the PCB board.

[0007] Preferably, the protective cover is a transparent structure, and the protective cover is installed with the alloy base in a flip cover manner through a connecting hinge, and the protective cover is installed with the alloy base in a magnetic splicing manner through a magnetic block.

[0008] Preferably, the infrared thermometer is vertically distributed to the PCB board.

[0009] Preferably, the bakelite insulation block is installed in a positioning and installation slot by inserting and positioning the alloy base through a positioning and installation plug rod, and the inner wall of the positioning and installation slot is a damping structure, and the bakelite insulation block is a door-type structure.

[0010] Preferably, the heating soldering iron is installed in a positioning and plug-in manner with the bakelite insulation block in the splicing slot through the splicing plug-in block, and the heating soldering iron is installed in an auxiliary plug-in manner with the alloy base in the auxiliary positioning groove through the auxiliary positioning block.

[0011] Preferably, the PCB board is bolted to the bakelite insulation block in the installation screw groove by means of an installation screw rod, and the PCB board is supported and placed on the bakelite insulation block by means of a support pad, and the support pad is made of rubber.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the alloy low-resistance resistor thermoelectric effect testing device can fix the PCB board and the bakelite insulation block with bolts by installing screws and installing screw grooves, and can be heated by a heating soldering iron, and can perform real-time temperature detection by an infrared thermometer, and during detection, it can be protected by a protective cover, and the bakelite insulation block can be quickly positioned and disassembled by a positioning installation slot and a positioning installation plug-in rod, and the heating soldering iron can be positioned and spliced ​​by a splicing slot and a splicing plug-in block, which is convenient for independent disassembly and replacement, and the detection is more stable and the use is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view of a thermoelectric effect test device for alloy low-resistance resistors of the utility model;

[0014] Figure 2 This is a cross-sectional view of a thermoelectric effect test device for alloy low-resistance resistors of the utility model;

[0015] Figure 3 This utility model is a kind of alloy low resistance resistor thermoelectric effect test device Figure 2 Enlarged view of point A in the middle;

[0016] Figure 4 This utility model is a kind of alloy low resistance resistor thermoelectric effect test device Figure 2 Enlarged view of point B in the middle;

[0017] Figure 5 This utility model is a kind of alloy low resistance resistor thermoelectric effect test device Figure 2 Enlarged view of point C in the middle;

[0018] Figure 6 This utility model is a kind of alloy low resistance resistor thermoelectric effect test device Figure 2 Enlarged view of point D in the middle;

[0019] Figure 7 This utility model is a kind of alloy low resistance resistor thermoelectric effect test device Figure 2 Enlarged view of point E in the middle.

[0020] In the figure: 1. alloy base, 2. protective cover, 3. infrared thermometer, 4. bakelite insulation block, 5. heating iron, 6. magnetic block, 7. connecting hinge, 8. mounting screw, 9. PCB board, 10. supporting pad, 11. mounting screw groove, 12. auxiliary positioning groove, 13. auxiliary positioning block, 14. splicing slot, 15. splicing plug-in block, 16. positioning installation slot, 17. positioning installation plug-in rod. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-7 The utility model provides a technical solution: a thermoelectric effect test device for alloy low-resistance resistors, comprising an alloy base 1, a protective cover 2, an infrared thermometer 3, a bakelite insulation block 4, a heating soldering iron 5, a magnetic block 6, a connecting hinge 7, an installation screw 8, a PCB board 9, a support pad 10, an installation screw groove 11, an auxiliary positioning groove 12, an auxiliary positioning block 13, a splicing slot 14, a splicing plug-in block 15, a positioning installation slot 16 and a positioning installation plug-in rod 17. A bakelite insulation block 4 is installed at the center of the lower end of the inner wall of the alloy base 1, and a PCB board 9 is installed at the upper end of the bakelite insulation block 4. The bakelite insulation block 4 is inserted and positioned with the alloy base 1 in the positioning installation slot 16 through the positioning installation plug-in rod 17, and the inner wall of the positioning installation slot 16 is a damping structure, and the bakelite insulation block 4 is a door-type structure, so that the bakelite insulation block 4 is convenient for rapid positioning, insertion, disassembly and assembly, and convenient for replacement and use.

[0023] The PCB board 9 is fixedly installed with the bakelite insulation block 4 by bolts in the installation screw groove 11 through the installation screw rod 8, and the PCB board 9 is supported and placed with the bakelite insulation block 4 through the support pad 10. The support pad 10 is made of rubber material, so that the PCB board 9 can be fixed with bolts and can be stably placed through the support pad 10.

[0024] A connecting hinge 7 is installed on one edge of the upper end of the alloy base 1, and a protective cover 2 is installed on the other side of the connecting hinge 7. The protective cover 2 is a transparent structure, and the protective cover 2 is installed with the alloy base 1 in a flip-cover manner through the connecting hinge 7. The protective cover 2 is installed with the alloy base 1 in a magnetically spliced ​​manner through a magnetic block 6, so that the protective cover 2 can be covered and protected to avoid being affected, and the detection is more stable.

[0025] Magnetic blocks 6 are embedded in the upper and lower edges of the alloy base 1 and the protective cover 2, and an infrared thermometer 3 is installed at the center of the upper end of the protective cover 2. The infrared thermometer 3 is vertically distributed to the PCB board 9, so that the infrared thermometer 3 can perform real-time temperature detection, and the detection effect is better.

[0026] A positioning installation plug rod 17 is fixedly connected to the lower end of the inner wall of the alloy base 1, and the positioning installation plug rod 17 is plugged and installed with the positioning installation slot 16. The positioning installation slot 16 is opened on both sides of the lower end of the bakelite insulation block 4, and splicing slots 14 are opened on both sides of the inner wall of the bakelite insulation block 4. Splicing blocks 15 are plugged and installed on the inner wall of the splicing slot 14, and a heating iron 5 is fixedly connected between the splicing blocks 15. The heating iron 5 is positioned and plugged with the bakelite insulation block 4 in the splicing slot 14 through the splicing blocks 15, and the heating iron 5 is auxiliary plugged and installed with the alloy base 1 in the auxiliary positioning groove 12 through the auxiliary positioning block 13. In this way, the heating iron 5 is convenient for quick positioning and disassembly, stable installation, and easy use.

[0027] An auxiliary positioning block 13 is fixedly connected to the lower end of the heating soldering iron 5, and the auxiliary positioning block 13 is inserted and installed in the auxiliary positioning groove 12. The auxiliary positioning groove 12 is opened at the center position of the lower end of the inner wall of the alloy base 1. Installation screw grooves 11 are opened on both sides of the upper end of the heating soldering iron 5, and the inner walls of the installation screw grooves 11 are inserted and installed with installation screws 8. The upper end of the bakelite insulation block 4 is fixedly connected to a support pad 10, and a PCB board 9 is placed on the upper end of the support pad 10. The installation screw 8 is inserted and installed with the support pad 10 and the PCB board 9.

[0028] Working principle: When using the alloy low-resistance resistor thermoelectric effect test device, first weld the resistor on the PCB board 9, then place the PCB board 9 on the support pad 10 on the bakelite insulation block 4, then insert the mounting screw 8 through the PCB board 9 and the support pad 10 into the mounting screw groove 11 for bolt fixation, then flip the protective cover 2 closed by connecting the hinge 7, and magnetically fix it by the magnetic block 6, then electrically heat it by the heating soldering iron 5, then detect the temperature of the resistor by the infrared thermometer 3, and record it, and the resistance value can be detected, and then the thermoelectric effect is calculated, and when the bakelite insulation block 4 and the heating soldering iron 5 need to be disassembled and replaced, they can be quickly plugged in, disassembled, and replaced through the splicing slot 14, the splicing plug block 15, the positioning installation slot 16 and the positioning installation plug rod 17. This is the use process of the alloy low-resistance resistor thermoelectric effect test device.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A thermoelectric effect test device for alloy low-resistance resistors, comprising an alloy base (1), a bakelite heat insulation block (4) is installed at the center of the lower end of the inner wall of the alloy base (1), and a PCB board (9) is installed at the upper end of the bakelite heat insulation block (4), characterized in that: A connecting hinge (7) is installed on one edge of the upper end of the alloy base (1), and a protective cover (2) is installed on the other side of the connecting hinge (7). Magnetic blocks (6) are embedded and installed on the upper and lower edges of the alloy base (1) and the protective cover (2), and an infrared thermometer (3) is installed at the center position of the upper end of the protective cover (2). A positioning installation plug rod (17) is fixedly connected to the lower end of the inner wall of the alloy base (1), and the positioning installation plug rod (17) is plugged and installed with a positioning installation slot (16). The positioning installation slot (16) is provided on both sides of the lower end of the bakelite heat insulation block (4), and splicing slots (14) are provided on both sides of the inner wall of the bakelite heat insulation block (4). The inner wall of the splicing slot (14) is plugged and installed with a splicing plug block ( 15), and a heating soldering iron (5) is fixedly connected between the splicing plug-in blocks (15), the lower end of the heating soldering iron (5) is fixedly connected to an auxiliary positioning block (13), and the auxiliary positioning block (13) is plugged and installed with an auxiliary positioning groove (12), the auxiliary positioning groove (12) is opened at the center position of the lower end of the inner wall of the alloy base (1), the upper end of the heating soldering iron (5) is opened with mounting screw grooves (11) on both sides, and the inner wall of the mounting screw groove (11) is plugged and installed with mounting screws (8), the upper end of the bakelite heat insulation block (4) is fixedly connected to a supporting pad (10), and a PCB board (9) is placed on the upper end of the supporting pad (10), and the mounting screw (8) is plugged and installed with the supporting pad (10) and the PCB board (9).

2. The device for testing the thermoelectric effect of a low-resistance alloy resistor according to claim 1, characterized in that: The protective cover (2) is a transparent structure, and the protective cover (2) is installed with the alloy base (1) in a flip cover manner via a connecting hinge (7), and the protective cover (2) is installed with the alloy base (1) in a magnetic splicing manner via a magnetic block (6).

3. The device for testing the thermoelectric effect of a low-resistance alloy resistor according to claim 2, characterized in that: The infrared thermometer (3) and the PCB board (9) are arranged in a vertical position.

4. The device for testing the thermoelectric effect of a low-resistance alloy resistor according to claim 3, characterized in that: The bakelite heat insulation block (4) is inserted and positioned with the alloy base (1) in the positioning installation slot (16) by means of a positioning installation plug rod (17), the inner wall of the positioning installation slot (16) is a damping structure, and the bakelite heat insulation block (4) is a door-shaped structure.

5. The device for testing the thermoelectric effect of alloy low-resistance resistors according to claim 4, characterized in that: The heating soldering iron (5) is installed in a positioning and plugging manner with the bakelite heat insulation block (4) in a splicing slot (14) via a splicing plug block (15), and the heating soldering iron (5) is installed in an auxiliary plugging manner with the alloy base (1) in an auxiliary positioning groove (12) via an auxiliary positioning block (13).

6. The device for testing the thermoelectric effect of a low-resistance alloy resistor according to claim 5, characterized in that: The PCB board (9) is bolted and installed with the bakelite heat insulation block (4) in the installation screw groove (11) via the installation screw rod (8), and the PCB board (9) is supported and placed with the bakelite heat insulation block (4) via the support pad (10), and the support pad (10) is made of rubber.

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