CN221056566U

CN221056566U - Piezoresistor testing device

Info

Publication number: CN221056566U
Application number: CN202322701555.6U
Authority: CN
Inventors: 周永; 周飞; 聂双
Original assignee: Hefei Hailaijia Electrical Appliance Co ltd
Current assignee: Hefei Hailaijia Electrical Appliance Co ltd
Priority date: 2023-10-09
Filing date: 2023-10-09
Publication date: 2024-05-31
Anticipated expiration: 2033-10-09

Abstract

The application relates to the field of piezoresistors and discloses a piezoresistor testing device which comprises a base, wherein the front end of the upper surface of the base is fixedly connected with a placing plate, the middle part of the upper surface of the placing plate is fixedly connected with a detection plate, the rear end of the upper surface of the placing plate is fixedly connected with a mounting frame, the middle part of the upper surface of the mounting frame is provided with a connecting hole, the inner wall of the connecting hole is fixedly connected with a fixing sleeve, and the inside of the fixing sleeve is provided with a fixing assembly; according to the application, the piezoresistor is placed on the detection plate, the piezoresistor can be fixed through the protective sleeve under the cooperation of the spring, the fixing sleeve and the connecting sleeve, meanwhile, the position of the supporting rod can be moved, the fixing ring is rotated, and the pins of the piezoresistor are placed in the fixing ring, so that the piezoresistor can be conveniently fixed during detection, and the problem that the detection result is error due to movement during detection of the piezoresistor is prevented.

Description

Piezoresistor testing device

Technical Field

The application relates to the field of piezoresistors, in particular to a piezoresistor testing device.

Background

The varistor is a resistance device with varistor characteristics, the resistance value of the varistor can be changed along with the magnitude of externally applied pressure or force, the varistor is composed of conductive particles and insulating materials, when the varistor is subjected to external force, the contact area or path between the conductive particles can be changed, so that the resistance value is changed, meanwhile, the varistor needs to be detected after production, and the varistor can be detected through an oscilloscope or a universal meter.

However, most of the conventional piezoresistor detection methods require a tester to be held by a worker for detection, which is inconvenient for fixing the piezoresistor during detection and easily affects the detection result of the piezoresistor.

The above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of utility model

The application provides a piezoresistor testing device, which aims to solve the problem that the traditional piezoresistor detection method is mostly inconvenient to fix a piezoresistor during detection.

The application provides a piezoresistor testing device which adopts the following technical scheme:

The utility model provides a piezoresistor testing arrangement, includes the base, the front end fixedly connected with of base upper surface places the board, and the middle part fixedly connected with pick-up plate of board upper surface should place, and the rear end fixedly connected with mounting bracket of board upper surface should place, the connecting hole has been seted up at the middle part of mounting bracket upper surface, the inner wall fixedly connected with fixed cover of this connecting hole, and the inside of this fixed cover is provided with fixed subassembly, one side fixedly connected with rack of base upper surface, the middle part fixedly connected with oscilloscope of this rack upper surface, the middle part of base upper surface is provided with locating component.

Preferably, the fixed subassembly includes presses pole, adapter sleeve, spring and spacing ring, the inner wall of fixed cover with press pole sliding connection, the pole body and the adapter sleeve fixed connection of this press pole lower extreme, the upper end and the lower extreme of spring all with fixed cover and adapter sleeve fixed connection, the pole body and the spacing ring fixed connection of pressing the pole upper end.

Preferably, the positioning assembly comprises a pulley, a supporting rod, a rotating sleeve and a fixed ring, an annular groove is formed in the middle of the upper surface of the placing plate, the pulleys are connected to the two sides of the inner bottom surface of the annular groove in a sliding mode, the upper surface of the pulley is rotationally connected with the supporting rod, the upper end of the supporting rod is rotationally connected with the rotating sleeve, and the upper surface of the rotating sleeve is fixedly connected with the fixed ring.

Preferably, the lower end of the pressing rod is fixedly connected with a protective layer, and the upper end of the pressing rod is fixedly connected with a top block.

Preferably, two placing grooves are respectively formed in one side of the upper surface of the placing frame, detection needles are arranged in the placing grooves, and the detection needles are electrically connected with the oscilloscopes.

In summary, the application has the following beneficial technical effects:

1. Through oscilloscope and the probe that sets up, can detect the piezo-resistor on the pick-up board, place the piezo-resistor on the pick-up board, under the cooperation of spring, fixed cover and adapter sleeve, can fix the piezo-resistor through the protective sheath, can remove the position of bracing piece simultaneously, and rotate solid fixed ring, place the pin of piezo-resistor in solid fixed ring to can be convenient for detect the time fixed to the piezo-resistor, thereby prevent the piezo-resistor because of producing the problem that removes the result that makes the detection when detecting and produce the error.

Drawings

FIG. 1 is a schematic overall construction of an embodiment of the application;

FIG. 2 is a schematic structural view of a securing assembly according to an embodiment of the present application;

Fig. 3 is an enlarged view at a in fig. 2.

Reference numerals illustrate: 1. a base; 2. placing a plate; 3. a detection plate; 4. a mounting frame; 5. a fixed sleeve; 6. pressing a pressing rod; 7. connecting sleeves; 8. a spring; 9. a protective layer; 10. a limiting ring; 11. a top block; 12. a placing rack; 13. an oscilloscope; 14. a probe; 15. a pulley; 16. a support rod; 17. a rotating sleeve; 18. and a fixing ring.

Detailed Description

The application is described in further detail below with reference to fig. 1-3.

The embodiment of the application discloses a piezoresistor testing device, referring to fig. 1, which comprises a base 1, wherein the front end of the upper surface of the base 1 is fixedly connected with a placing plate 2, the middle part of the upper surface of the placing plate 2 is fixedly connected with a detecting plate 3, the detecting plate 3 can be used for placing piezoresistors to be detected, the rear end of the upper surface of the placing plate 2 is fixedly connected with a mounting frame 4, the mounting frame 4 is L-shaped, the middle part of the upper surface of the mounting frame 4 is provided with a connecting hole, the inner wall of the connecting hole is fixedly connected with a fixing sleeve 5, the inside of the fixing sleeve 5 is provided with a hole groove, the pressing rod 6 can be limited, and the inside of the fixing sleeve 5 is provided with a fixing component;

Specifically, referring to fig. 2, the fixed assembly includes a pressing rod 6, a connecting sleeve 7, a spring 8 and a limiting ring 10, the inner wall of the fixing sleeve 5 is slidably connected with the pressing rod 6, the pressing rod 6 can slide inside the fixing sleeve 5, the rod body at the lower end of the pressing rod 6 is fixedly connected with the connecting sleeve 7, the connecting sleeve 7 is used for fixing the spring 8, the upper end and the lower end of the spring 8 are fixedly connected with the fixing sleeve 5 and the connecting sleeve 7, the spring 8 can provide downward elasticity for the connecting sleeve 7, the fixing sleeve 5 can fix the spring 8, the rod body at the upper end of the pressing rod 6 is fixedly connected with the limiting ring 10, and the limiting ring 10 can limit the position of the pressing rod 6.

One side fixedly connected with rack 12 of base 1 upper surface, the detection device can be placed to rack 12, and the middle part fixedly connected with oscilloscope 13 of this rack 12 upper surface, oscilloscope 13 can detect the piezo-resistor, and the opposite side of rack 12 supports through the three support column that sets up simultaneously, and the middle part of base 1 upper surface is provided with locating component.

Specifically, referring to fig. 3, the locating component includes pulley 15, bracing piece 16, rotating sleeve 17 and solid fixed ring 18, the annular channel has been seted up at the middle part of placing board 2 upper surface, the annular channel sets up to the shape of turning round, the both sides of this annular channel inner bottom surface all sliding connection has pulley 15, pulley 15 can freely slide in the annular channel inside, the upper surface and the bracing piece 16 rotation of pulley 15 are connected, the shaft of bracing piece 16 upper end passes the annular channel setting and is in the upper end of pick-up board 3, the upper end and the rotating sleeve 17 of bracing piece 16 rotate to be connected, rotating sleeve 17 can rotate on bracing piece 16, the upper surface and solid fixed ring 18 fixed connection of this rotating sleeve 17, gu fixed ring 18 sets up to the L, can place the pin of piezo-resistor on solid fixed ring 18 and fix.

Referring to fig. 2, the lower end of the pressing rod 6 is fixedly connected with the protective layer 9, the protective layer 9 can prevent the pressure dependent resistor from being damaged due to overlarge pressure when the pressing rod 6 presses and fixes the pressure dependent resistor, and the upper end of the pressing rod 6 is fixedly connected with the top block 11, and the top block 11 can conveniently pull the pressing rod 6.

Referring to fig. 1, two placement grooves are respectively formed on one side of the upper surface of the placement frame 12, the inside of each placement groove is provided with a probe 14, the probe 14 is electrically connected with the oscilloscope 13, and the arranged probe 14 can be used for testing piezoresistors.

The implementation principle of the piezoresistor testing device provided by the embodiment of the application is as follows: when the piezoresistor detection device is used, the piezoresistor can be firstly placed in the middle of the detection plate 3, the pressing rod 6 and the protective layer 9 can be fixed on the main body of the piezoresistor through the set spring 8, meanwhile, the position of the supporting rod 16 can be moved, the rotating sleeve 17 and the fixed ring 18 are rotated, pins of the piezoresistor are placed in the fixed ring 18, then the set oscilloscope 13 can be started, the set probe 14 is taken out, the pointer of the probe 14 is contacted with the pins of the piezoresistor, the piezoresistor is detected, and supporting legs are arranged at four corners of the lower surface of the base 1.

The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;

finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. The utility model provides a piezoresistor testing arrangement, includes base (1), its characterized in that, the front end fixedly connected with of base (1) upper surface places board (2), and the middle part fixedly connected with pick-up plate (3) of board (2) upper surface should be placed, and the rear end fixedly connected with mounting bracket (4) of board (2) upper surface should be placed, connecting hole has been seted up at the middle part of mounting bracket (4) upper surface, and the inner wall fixedly connected with fixed cover (5) of this connecting hole, the inside of this fixed cover (5) is provided with fixed subassembly, one side fixedly connected with rack (12) of base (1) upper surface, the middle part fixedly connected with oscilloscope (13) of this rack (12) upper surface, the middle part of base (1) upper surface is provided with locating component.

2. The piezoresistor testing device according to claim 1, wherein the fixing component comprises a pressing rod (6), a connecting sleeve (7), a spring (8) and a limiting ring (10), the inner wall of the fixing sleeve (5) is in sliding connection with the pressing rod (6), a rod body at the lower end of the pressing rod (6) is fixedly connected with the connecting sleeve (7), the upper end and the lower end of the spring (8) are fixedly connected with the fixing sleeve (5) and the connecting sleeve (7), and the rod body at the upper end of the pressing rod (6) is fixedly connected with the limiting ring (10).

3. The piezoresistor testing device according to claim 1, wherein the positioning assembly comprises a pulley (15), a supporting rod (16), a rotating sleeve (17) and a fixing ring (18), an annular groove is formed in the middle of the upper surface of the placing plate (2), the pulley (15) is slidably connected to two sides of the inner bottom surface of the annular groove, the upper surface of the pulley (15) is rotationally connected with the supporting rod (16), the upper end of the supporting rod (16) is rotationally connected with the rotating sleeve (17), and the upper surface of the rotating sleeve (17) is fixedly connected with the fixing ring (18).

4. The piezoresistor testing device according to claim 2, wherein the lower end of the pressing rod (6) is fixedly connected with a protective layer (9), and the upper end of the pressing rod (6) is fixedly connected with a top block (11).

5. The piezoresistor testing device according to claim 1, wherein two placement grooves are respectively formed in one side of the upper surface of the placement frame (12), the interior of each placement groove is provided with a detection needle (14), and the detection needles (14) are electrically connected with the oscilloscope (13).