Thermistor testing device

Abstract

The utility model relates to the technical field of thermistor testing, and discloses a thermistor testing device, which comprises a thermistor tester. The thermistor tester is provided with an assembly seat, the assembly seat is internally provided with a plurality of limiting grooves, the top of the assembly seat is provided with a plurality of jacks, the jacks are communicated with the limiting grooves respectively, and the jacks are internally provided with elastic air pushing parts. The bottoms of the multiple elastic air pushing pieces are connected with limiting pieces, and the multiple limiting pieces are located in the multiple limiting grooves correspondingly. A tubular dust blowing piece used for blowing dust of the workpiece is installed on the assembling base and communicates with the multiple elastic air pushing pieces. The utility model provides a thermistor testing device which solves the problem that dust on pins of a thermistor is inconvenient to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of thermistor testing, in particular to a thermistor testing device. Background Art

[0002] A thermistor is a semiconductor device that consists of a resistor and an insulating layer, usually encapsulated in a ceramic or plastic shell. The resistance value of a thermistor changes with temperature, usually showing a positive temperature coefficient, that is, the resistance value decreases when the temperature rises. Thermistors are mainly used as temperature sensors and temperature adjustment elements. They can be used to measure ambient temperature, product temperature, or the temperature of other objects being measured. In the process of using thermistors, they need to be tested by a thermistor tester to ensure that their performance meets the design requirements. Through testing, we can understand the changes in the resistance value of the thermistor at different temperatures, so as to determine whether its performance is normal. In addition, through testing, potential problems of the thermistor can also be discovered;

[0003] When testing a thermistor, it is necessary to connect the test pen to the plug port on the thermistor tester, and then test the thermistor through the test pen. However, it is inconvenient to clean the dust on the surface of the thermistor before testing, and the test is usually carried out directly, which is easy to affect the test results.

[0004] In order to solve the above problems, a thermistor testing device is proposed in the present application. Utility Model Content

[0005] Based on the technical problems existing in the background technology, the utility model proposes a thermistor testing device.

[0006] The utility model provides a thermistor testing device, comprising a thermistor testing instrument;

[0007] The thermistor tester is provided with an assembly seat, a plurality of limit grooves are provided in the assembly seat, a plurality of sockets are provided on the top of the assembly seat, a plurality of the sockets are respectively connected with a plurality of limit grooves, a plurality of elastic air pushers are installed in the plurality of sockets, a plurality of the bottoms of the elastic air pushers are connected with limit members, and a plurality of the limit members are respectively located in a plurality of limit grooves;

[0008] A tubular dust blowing member for blowing dust off the workpiece is installed on the assembly seat, and the tubular dust blowing member is communicated with a plurality of elastic air pushing members.

[0009] Preferably, the elastic air-pushing member includes an air cylinder, and several of the air cylinders are respectively installed in several sockets. An air cavity is opened in the air cylinder, and a piston is slidably arranged in the air cavity. An elastic part connected to the piston is inserted on the air cylinder, and several air holes connected to the air cavity are opened at the bottom of the air cylinder.

[0010] Preferably, the elastic part includes a connecting rod, an end block and a spring, the top of the gas cylinder is provided with an opening connected to the air cavity, the connecting rod slides through the opening and is connected to the piston, the end block is installed on the top of the connecting rod, the spring is sleeved on the connecting rod and is located between the gas cylinder and the end block, and the two ends of the spring are respectively connected to the gas cylinder and the end block.

[0011] Preferably, the limiting member includes a limiting rod and a limiting block, the bottom of the air cylinder is provided with a through hole connected to the air cavity, the limiting rod slides through the through hole and is connected to the bottom of the piston, and the limiting block is installed at the bottom end of the limiting rod and abuts against the bottom of the limiting groove.

[0012] Preferably, the tubular dust-blowing component includes a dust-blowing pipe, which is installed on the front side of the assembly seat and located above a number of limit grooves, a number of dust-blowing nozzles are connected to the bottom of the dust-blowing pipe, and a number of the dust-blowing nozzles are respectively located above a number of limit grooves, and a number of conducting tubes are connected to the dust-blowing pipe, and a number of the conducting tubes are respectively connected to the bottoms of a number of air cylinders, and a number of the conducting tubes are respectively connected to a number of air cavities.

[0013] The above technical solution of the utility model has the following beneficial technical effects:

[0014] By means of the elastic air pushing piece and the limiting piece, the elastic air pushing piece can be pulled upward so that the limiting piece moves to the top of the limiting groove, and air enters the elastic air pushing piece during the pulling process, and then the thermistor is inserted into the limiting groove so that the pin is placed outside the limiting groove. Subsequently, the force applied to the elastic air pushing piece can be withdrawn to reset it, and the thermistor is pressed against the limiting piece at the bottom of the elastic air pushing piece. During the resetting process, the elastic air pushing piece can blow gas into the limiting groove and then discharge it from the limiting groove, and the pin of the thermistor can be blown with air. This structure can clean the dust on the pin of the thermistor during the limiting process, thereby ensuring the test results.

[0015] By setting up the tubular dust blowing piece, during the resetting process of the elastic air pushing piece, part of the gas can enter the tubular dust blowing piece, and then the pins on the thermistor can be blown by the tubular dust blowing piece, thereby enhancing the effect of cleaning the pins on the thermistor. This structure can further improve the effect of cleaning the dust on the pins of the thermistor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic diagram of the structure of a thermistor testing device.

[0017] Figure 2 For this utility model Figure 1 Schematic diagram of the structure of the middle assembly seat.

[0018] Figure 3 For this utility model Figure 2 Schematic diagram of the local plane structure in.

[0019] Figure numerals: 1, thermistor tester; 2, assembly seat; 3, limit groove; 4, elastic air pusher; 41, air cylinder; 42, piston; 43, elastic part; 431, connecting rod; 432, end block; 433, spring; 44, air hole; 5, limiter; 51, limiter rod; 52, limiter block; 6, tubular dust blowing member; 61, dust blowing pipe; 62, dust blowing nozzle; 63, conducting pipe. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0021] like Figure 1-3 As shown, a thermistor testing device proposed by the utility model comprises a thermistor tester 1;

[0022] In this embodiment, an assembly seat 2 is installed on the thermistor tester 1, and a plurality of limit grooves 3 are provided in the assembly seat 2. A plurality of sockets are provided on the top of the assembly seat 2, and the plurality of sockets are respectively connected to the plurality of limit grooves 3, and elastic air pushers 4 are installed in the plurality of sockets. The elastic air pusher 4 includes an air cylinder 41, and the plurality of air cylinders 41 are respectively installed in the plurality of sockets, and an air cavity is provided in the air cylinder 41, and a piston 42 is slidably provided in the air cavity, and an elastic part 43 connected to the piston 42 is inserted on the air cylinder 41, and a plurality of air holes 44 connected to the air cavity are provided at the bottom of the air cylinder 41. The elastic part 43 includes a connecting rod 431, an end block 432 and a spring 433. An opening connected to the air cavity is opened at the top of the gas cylinder 41. The connecting rod 431 slides through the opening and is connected to the piston 42. The end block 432 is installed on the top of the connecting rod 431. The spring 433 is sleeved on the connecting rod 431 and is located between the gas cylinder 41 and the end block 432, and the two ends of the spring 433 are respectively connected to the gas cylinder 41 and the end block 432.

[0023] In this embodiment, the bottoms of the plurality of elastic air-pushing members 4 are all connected to the limiting members 5, and the plurality of limiting members 5 are respectively located in the plurality of limiting grooves 3. The limiting members 5 include a limiting rod 51 and a limiting block 52. The bottom of the air cylinder 41 is provided with a through hole communicating with the air cavity. The limiting rod 51 slides through the through hole and is connected to the bottom of the piston 42. The limiting block 52 is installed at the bottom end of the limiting rod 51 and abuts against the bottom of the limiting groove 3.

[0024] It should be noted that: when in use, the end block 432 can be pulled upward so that the spring 433 is stretched, and the connecting rod 431 drives the piston 42 to move upward in the air cylinder 41, and the external air can enter the air cavity through the air hole 44 opened at the bottom of the air cylinder 41. When the piston 42 moves upward, the limit block 52 can be driven to move to the top of the limit groove 3 through the limit rod 51, and then the thermistor can be inserted into the limit groove 3 so that the pin is placed outside the limit groove 3, and then the force applied to the end block 432 can be withdrawn. Under the action of the spring 433, the piston 42, the limit rod 51 and the limit block 52 can return to their original positions, and the thermistor can be pressed against by the limit block 52 at the bottom of the limit rod 51. In the process of returning to its original position, the piston 42 can discharge the gas from the air hole 44 opened at the bottom of the gas cylinder 41 and enter the limit groove 3, and then be discharged from the limit groove 3, so that the pins of the thermistor can be blown. This structure can clean the dust on the pins of the thermistor during the process of limiting the position of the thermistor, thereby ensuring the test results.

[0025] In this embodiment, a tubular dust blowing member 6 for blowing dust from a workpiece is installed on the assembly seat 2, and the tubular dust blowing member 6 is connected to a plurality of elastic air pushing members 4. The tubular dust blowing member 6 includes a dust blowing pipe 61, which is installed on the front of the assembly seat 2 and located above a plurality of limit grooves 3, a plurality of dust blowing nozzles 62 are connected to the bottom of the dust blowing pipe 61, and the plurality of dust blowing nozzles 62 are respectively located above a plurality of limit grooves 3, and a plurality of conducting pipes 63 are connected to the dust blowing pipe 61, and the plurality of conducting pipes 63 are respectively connected to the bottoms of a plurality of air cylinders 41, and the plurality of conducting pipes 63 are respectively connected to a plurality of air cavities.

[0026] It should be noted that: in order to further improve the effect of cleaning dust on the thermistor pins, when the piston 42 returns to its original position, a part of the air can enter the dust blowing tube 61 along the conductive tube 63, and then the pins on the thermistor can be blown by the dust blowing nozzle 62 at the bottom of the dust blowing tube 61, which can effectively blow away the dust on the pins. This structure can further improve the effect of cleaning dust on the thermistor pins.

[0027] In a specific embodiment, after the thermistor is limited, the data line on the test pen can be connected to the plug port on the thermistor tester 1, and then the thermistor can be tested by the test pen.

[0028] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A thermistor testing device, comprising a thermistor tester (1), characterized in that: The thermistor tester (1) is provided with an assembly seat (2), a plurality of limit grooves (3) are provided in the assembly seat (2), a plurality of sockets are provided on the top of the assembly seat (2), a plurality of the sockets are respectively connected with a plurality of limit grooves (3), a plurality of elastic air pushing members (4) are installed in the plurality of the sockets, a plurality of the bottoms of the plurality of elastic air pushing members (4) are connected with limit members (5), and a plurality of the limit members (5) are respectively located in a plurality of limit grooves (3); A tubular dust blowing member (6) for blowing dust off the workpiece is installed on the assembly seat (2), and the tubular dust blowing member (6) is connected to a plurality of elastic air pushing members (4).

2. A thermistor testing device according to claim 1, characterized in that: The elastic air-pushing member (4) comprises an air cylinder (41), a plurality of the air cylinders (41) are respectively installed in a plurality of sockets, an air cavity is provided in the air cylinder (41), a piston (42) is slidably arranged in the air cavity, an elastic part (43) connected to the piston (42) is inserted on the air cylinder (41), and a plurality of air holes (44) connected to the air cavity are provided at the bottom of the air cylinder (41).

3. A thermistor testing device according to claim 2, characterized in that: The elastic part (43) comprises a connecting rod (431), an end block (432) and a spring (433); an opening connected to the air cavity is provided at the top of the gas cylinder (41); the connecting rod (431) slides through the opening and is connected to the piston (42); the end block (432) is installed on the top of the connecting rod (431); the spring (433) is sleeved on the connecting rod (431) and is located between the gas cylinder (41) and the end block (432); and the two ends of the spring (433) are respectively connected to the gas cylinder (41) and the end block (432).

4. A thermistor testing device according to claim 3, characterized in that: The limiting member (5) comprises a limiting rod (51) and a limiting block (52); a through hole communicating with the air cavity is provided at the bottom of the air cylinder (41); the limiting rod (51) slides through the through hole and is connected to the bottom of the piston (42); the limiting block (52) is mounted on the bottom end of the limiting rod (51) and abuts against the bottom of the limiting groove (3).

5. A thermistor testing device according to claim 3, characterized in that: The tubular dust blowing member (6) comprises a dust blowing pipe (61), the dust blowing pipe (61) is mounted on the front of the assembly seat (2) and is located above a plurality of limiting grooves (3), the bottom of the dust blowing pipe (61) is connected to a plurality of dust blowing nozzles (62), the plurality of dust blowing nozzles (62) are respectively located above a plurality of limiting grooves (3), the dust blowing pipe (61) is connected to a plurality of conducting pipes (63), the plurality of conducting pipes (63) are respectively connected to the bottoms of a plurality of air cylinders (41), and the plurality of conducting pipes (63) are respectively connected to a plurality of air cavities.

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