Detection device for NTC thermistor

Abstract

The utility model discloses a detection device for NTC thermistors, which comprises a detection box, and a detection plate is slidably mounted in the detection box. A plurality of insertion assemblies are arranged on the surface of the detection plate, each insertion assembly comprises a mounting base fixed to the surface of the detection plate, the inner side of each mounting base is slidably connected with an insertion column block, and a cavity is formed in each insertion column block; wherein fixed pipes are symmetrically and fixedly mounted in the cavity, movable columns are slidably connected in the fixed pipes, arc-shaped hoops are fixedly connected to the ends, close to the top hole, of the movable columns, and insulating pads are fixedly mounted on the inner arc surfaces of the arc-shaped hoops; the two arc-shaped hoops push the insulation pads to clamp the thermistors, the problem that the thermistors shake in the moving process, poor contact occurs, and testing errors are caused is solved, and the thermistors of various sizes can be stably installed and tested through the device in cooperation with the movable inserting column blocks.

Description

Technical Field

[0001] The utility model relates to the technical field of shearing machines, in particular to a detection device for NTC thermistors. Background Art

[0002] Thermistor is a resistor device whose resistance value changes with temperature. Usually, the distance between the two electrodes of thermistor is usually between a few millimeters and tens of millimeters, and the common thermistor plug shaft diameters are 3mm, 5mm, 8mm, etc.

[0003] Publication No. CN113588129B discloses a detection device for NTC thermistors, including a base, a detection box with an opening at the bottom is screwed to the top outer wall of the base by bolts, a rectangular opening is opened on one side outer wall of the detection box, openings are opened on both sides of the top outer wall of the base, and the inner walls of the two openings are slidably connected with the same detection plate, the top outer wall of the detection plate is screwed with detection seats distributed at equal distances by bolts, the two sides of the top inner wall of the detection box are screwed with first electric slide rails by bolts, and the inner walls of the two first electric slide rails are slidably connected with the same sliding box, and the bottom outer wall of the sliding box is opened with a rectangular opening. This device is provided with an inspection mechanism in the inspection box, and the thermistor is detected separately by the inspection mechanism, which reduces the error of the existing detection device and improves the accuracy of resistance detection. However, the patent still has the following problems in actual use:

[0004] When testing a thermistor, it is necessary to connect the two plug shafts of the thermistor to the resistance measurement port of the digital multimeter while ensuring that the connection is correct and firm. However, the above-mentioned device and the existing test socket electrode sockets are of fixed size, resulting in the thermistor shaking when the plug shaft diameter of the thermistor changes, making it inconvenient to quickly and stably install and remove the thermistor. Furthermore, as the distance between the two electrodes of the thermistor changes, the electrodes cannot be quickly inserted into the test socket, and the plug shaft often needs to be bent, affecting the test efficiency. In addition, the single device cannot quickly adapt to thermistors of various sizes.

[0005] A detection device for an NTC thermistor is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a detection device for NTC thermistors, so as to solve the problem that the above-mentioned device proposed in the above-mentioned background technology and the existing test socket electrode socket have a fixed size, which causes the thermistor to shake when the plug shaft diameter of the thermistor changes, making it inconvenient to quickly and stably install and remove the thermistor.

[0007] To achieve the above object, the utility model provides the following technical solution: a detection device for an NTC thermistor, comprising a detection box, a detection plate is slidably installed inside the detection box, and a handle is fixedly installed on the outside of the detection plate;

[0008] The surface of the detection board is provided with a plurality of plug-in components, and the plug-in components include a mounting seat fixed to the surface of the detection board, the inner side of the mounting seat is provided with a recessed groove, and a plug-in column block is symmetrically slidably connected in the recessed groove, the interior of the plug-in column block is provided with a cavity, and the top surface of the plug-in column block is provided with a top hole;

[0009] A fixed tube is symmetrically fixedly installed inside the cavity, a movable column is slidably connected inside the fixed tube, an arc-shaped hoop is fixedly connected to one end of the movable column close to the top hole, and an insulating pad is fixedly installed on the inner arc surface of the arc-shaped hoop;

[0010] Wherein, a positioning component is arranged on the outer side of the column block.

[0011] Preferably, a plurality of first springs are fixedly installed on one side of the cavity, the other end of the first spring is fixedly connected to a bending rod, and both ends of the bending rod are fixedly connected to a toothed column.

[0012] Preferably, a first movable groove is provided on a side of the fixed tube close to the tooth column, a plurality of teeth are fixedly connected to a side of the movable column close to the tooth column, the teeth are snap-connected to the tooth column, and the teeth are slidably connected to the first movable groove.

[0013] Preferably, one end of the movable column away from the arc hoop is fixedly connected to the first shift plate, the first shift plate slides through the top surface of the fixed tube, the first shift plate is slidably connected to a top groove opened on the top surface of the column block, and stable columns slidably connected to the recessed grooves are fixedly installed on both sides of the column block.

[0014] Preferably, the positioning assembly includes a spring tube fixed to the outside of the plug block, a second spring is provided inside the spring tube, both ends of the second spring are fixedly connected with telescopic columns, the telescopic columns slide through the two ends of the spring tube and are fixedly connected with friction pads.

[0015] Preferably, a second movable groove is opened on the outer side of the spring tube, and a second shift plate is slidably connected to the second movable groove, and the second shift plate is fixedly connected to one end of the telescopic column located inside the spring tube.

[0016] Preferably, a conductive gasket located just below the top hole is buried inside the mounting seat, a wire groove opened on the top surface of the mounting seat is provided just below the conductive gasket, and a plug post of the thermistor is plugged into the top hole.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the detection device for NTC thermistors allows two arc-shaped hoops to push the insulating pads to clamp the thermistors, thereby preventing the thermistors from shaking during movement, thereby causing poor contact and test errors, and then cooperates with the movable plug block so that the device can stably install and test thermistors of various sizes. The specific contents are as follows:

[0018] 1. The two electrode plug shafts of the thermistor are inserted into the plug column block through the top hole, and then the two first paddles are pinched to make the movable column slide in the fixed tube until the arc hoop pushes the insulating pad to clamp the thermistor, thus preventing the thermistor from shaking during movement, resulting in poor contact and test errors. In addition, the diameter of the top hole is larger than the electrode plug shaft of a common thermistor, which ultimately enables the device to stably install and test thermistors of various sizes.

[0019] 2. By pinching the two second paddles, the telescopic column drives the friction pad away from the recessed groove and moves the position of the plug block at the same time. By comparing with the thermistor, the distance between the two top holes is approximately equal to the spacing of the electrode plug shafts. Finally, the second paddle is released to allow the second spring to push the telescopic column to move until the friction pad abuts against the recessed groove, thereby preventing the plug block from sliding on the mounting seat at will. The device can also test thermistors of various sizes, thereby increasing the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the front cross-section structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the top view structure of the mounting base;

[0022] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of the middle B area;

[0023] Figure 4 for Figure 2 Schematic diagram of the enlarged structure of the A area in the middle;

[0024] Figure 5 It is a schematic diagram of the side structure of the mounting base.

[0025] In the figure: 1. detection box; 101. detection plate; 102. handle; 2. plug-in assembly; 201. mounting seat; 202. plug-in column block; 203. top hole; 204. first spring; 205. bending rod; 206. tooth column; 207. fixed tube; 208. first movable groove; 209. movable column; 210. teeth; 211. arc hoop; 212. insulating pad; 213. first dial plate; 214. top groove; 215. stabilizing column; 3. positioning assembly; 301. spring tube; 302. second spring; 303. telescopic column; 304. second movable groove; 305. second dial plate; 306. friction pad; 307. conductive gasket; 308. wire groove. DETAILED DESCRIPTION

[0026] 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 implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0027] See also Figure 1-5 The utility model provides a technical solution: a detection device for an NTC thermistor, comprising a detection box 1, a detection plate 101 is slidably installed inside the detection box 1, and a handle 102 is fixedly installed on the outside of the detection plate 101;

[0028] A plurality of plug-in components 2 are arranged on the surface of the detection board 101, and the plug-in components 2 include a mounting base 201 fixed on the surface of the detection board 101, a recessed groove is provided on the inner side of the mounting base 201, a plug-in column block 202 is symmetrically slidably connected in the recessed groove, a cavity is provided inside the plug-in column block 202, and a top hole 203 is provided on the top surface of the plug-in column block 202; the diameter of the top hole 203 is the diameter of most thermistors.

[0029] A fixed tube 207 is symmetrically fixedly installed inside the cavity, a movable column 209 is slidably connected inside the fixed tube 207, an arc hoop 211 is fixedly connected to one end of the movable column 209 close to the top hole 203, and an insulating pad 212 is fixedly installed on the inner arc surface of the arc hoop 211;

[0030] Wherein, a positioning component 3 is arranged on the outer side of the column block 202 .

[0031] A plurality of first springs 204 are fixedly installed on one side of the cavity, and a bending rod 205 is fixedly connected to the other end of the first spring 204, and both ends of the bending rod 205 are fixedly connected to a tooth column 206; a first movable groove 208 is opened on the side of the fixed tube 207 close to the tooth column 206, and a plurality of teeth 210 are fixedly connected to the side of the movable column 209 close to the tooth column 206, and the teeth 210 are engaged with the tooth column 206, and the teeth 210 are slidably connected to the first movable groove 208; the tooth column 206 can stably resist the gap between the teeth 210 under the push of the first spring 204, so that the movable column 209 can stably resist the polar axis of the thermistor, and an anti-deflection column is slidably connected through the middle part of the bending rod 205, and the anti-deflection column is fixedly connected to the inner wall of the cavity.

[0032] One end of the movable column 209 away from the arc hoop 211 is fixedly connected to the first selector plate 213, and the first selector plate 213 slides through the top surface of the fixed tube 207. The first selector plate 213 is slidably connected to a top groove 214 opened on the top surface of the column block 202, and both sides of the column block 202 are fixedly installed with stabilizing columns 215 slidably connected to the recessed groove; the stabilizing columns 215 can increase the stability of the column block 202 when sliding, and the top surface of the fixed tube 207 is also provided with a through groove, and the first selector plate 213 is slidably connected to the through groove.

[0033] The positioning assembly 3 includes a spring tube 301 fixed to the outside of the column block 202, a second spring 302 is arranged inside the spring tube 301, both ends of the second spring 302 are fixedly connected with telescopic columns 303, the telescopic columns 303 slide through the two ends of the spring tube 301 and are fixedly connected with friction pads 306; a second movable groove 304 is opened on the outside of the spring tube 301, the second movable groove 304 is slidably connected with a second shift plate 305, and the second shift plate 305 is fixedly connected to one end of the telescopic column 303 located inside the spring tube 301; the second spring 302 can push the friction pad 306 to fit tightly against the recessed groove, so that the column block 202 cannot slide on the mounting seat 201 at will, and can keep the position of the column block 202 fixed when the thermistor is installed.

[0034] A conductive gasket 307 is buried inside the mounting base 201 and is located directly below the top hole 203. A wire groove 308 is provided on the top surface of the mounting base 201 and is directly below the conductive gasket 307. The top hole 203 is plugged with a plug of the thermistor. After the thermistor's electrode is inserted, it will fit with the conductive gasket 307. A wire connected to the conductive gasket 307 can be installed in the wire groove 308 and connected to external parts such as a voltmeter or power supply through the wire.

[0035] Working principle: Before using this detection device for NTC thermistor, you need to check the overall condition of the device to make sure it can work normally. Figure 1 - Figure 5As shown, when the device tests thermistors of different sizes, the two second plates 305 are firstly pinched to move closer to each other and squeeze the second spring 302, so that the telescopic column 303 drives the friction pad 306 away from the concave groove, and at the same time moves the position of the plug block 202. By comparing with the thermistor, the distance between the top holes 203 on the two plug blocks 202 is roughly equal to the distance between the two electrode plug shafts of the thermistor. Finally, the second plate 305 is released to allow the second spring 302 to push the telescopic column 303 to move until the friction pad 306 abuts against the concave groove, so that the plug block 202 cannot slide on the mounting seat 201 at will, and the device can test thermistors of various sizes, thereby increasing the practicality of the device.

[0036] Then, the two electrode plug shafts of the thermistor are inserted into the plug column block 202 through the top hole 203, and then the two first paddles 213 are pinched to make the movable column 209 slide in the fixed tube 207 until the arc hoop 211 pushes the insulating pad 212 to clamp the thermistor, thereby preventing the thermistor from shaking during the movement, thereby causing poor contact and test errors. In addition, the diameter of the top hole 203 is larger than that of the electrode plug shaft of a common thermistor, thereby enabling the device to stably install and test thermistors of various sizes.

[0037] During the movement of the movable column 209, the teeth 210 will squeeze the toothed column 206, so that the bending rod 205 will slide outward and squeeze the first spring 204, and then the first spring 204 will push the toothed column 206 to engage with the teeth 210, so that the position of the movable column 209 is fixed, ensuring that the arc hoop 211 squeezes the thermistor electrode plug shaft, thereby ensuring the stability of the electrode plug shaft installation.

[0038] 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 detection device for an NTC thermistor, comprising a detection box (1), a detection plate (101) being slidably mounted inside the detection box (1), and a handle (102) being fixedly mounted on the outer side of the detection plate (101); It is characterized in that Also includes: The surface of the detection board (101) is provided with a plurality of plug-in components (2), the plug-in components (2) comprising a mounting seat (201) fixed to the surface of the detection board (101), the inner side of the mounting seat (201) is provided with a recessed groove, a plug-in column block (202) is symmetrically slidably connected in the recessed groove, a cavity is provided inside the plug-in column block (202), and a top hole (203) is provided on the top surface of the plug-in column block (202); A fixed tube (207) is symmetrically fixedly installed inside the cavity, a movable column (209) is slidably connected inside the fixed tube (207), an arc-shaped hoop (211) is fixedly connected to one end of the movable column (209) close to the top hole (203), and an insulating pad (212) is fixedly installed on the inner arc surface of the arc-shaped hoop (211); Wherein, a positioning component (3) is arranged on the outer side of the column block (202).

2. A detection device for NTC thermistor according to claim 1, characterized in that: A plurality of first springs (204) are fixedly mounted on one side of the cavity, the other end of the first spring (204) is fixedly connected to a bending rod (205), and both ends of the bending rod (205) are fixedly connected to a toothed column (206).

3. A detection device for NTC thermistor according to claim 1, characterized in that: A first movable groove (208) is provided on a side of the fixed tube (207) close to the rodent column (206), and a plurality of teeth (210) are fixedly connected to a side of the movable column (209) close to the rodent column (206), the teeth (210) are snap-fitted and connected to the rodent column (206), and the teeth (210) are slidably connected to the first movable groove (208).

4. A detection device for NTC thermistor according to claim 1, characterized in that: One end of the movable column (209) away from the arc hoop (211) is fixedly connected to the first shift plate (213), and the first shift plate (213) slides through the top surface of the fixed tube (207). The first shift plate (213) is slidably connected to a top groove (214) opened on the top surface of the column insertion block (202), and stable columns (215) slidably connected to the recessed grooves are fixedly installed on both sides of the column insertion block (202).

5. A detection device for NTC thermistor according to claim 1, characterized in that: The positioning assembly (3) comprises a spring tube (301) fixed to the outside of the plug block (202), a second spring (302) is provided inside the spring tube (301), both ends of the second spring (302) are fixedly connected to telescopic columns (303), and the telescopic columns (303) slide through the two ends of the spring tube (301) and are fixedly connected to friction pads (306).

6. A detection device for NTC thermistor according to claim 5, characterized in that: A second movable groove (304) is provided on the outer side of the spring tube (301), a second shifting plate (305) is slidably connected to the second movable groove (304), and the second shifting plate (305) is fixedly connected to one end of the telescopic column (303) located inside the spring tube (301).

7. A detection device for NTC thermistor according to claim 1, characterized in that: A conductive gasket (307) located directly below the top hole (203) is embedded inside the mounting seat (201), a wire groove (308) opened on the top surface of the mounting seat (201) is provided directly below the conductive gasket (307), and a plug post of a thermistor is plugged into the top hole (203).

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