CN212934291U

CN212934291U - Low-inherent-capacitance piezoresistor

Info

Publication number: CN212934291U
Application number: CN202021586425.2U
Authority: CN
Inventors: 查泽军
Original assignee: Fujian Qiaoguang Electronic Technology Co ltd
Current assignee: Fujian Qiaoguang Electronic Technology Co ltd
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2021-04-09
Anticipated expiration: 2030-08-04

Abstract

The utility model relates to the technical field of resistors, in particular to a low inherent capacitance piezoresistor, which comprises a piezoresistor, wherein the top end of the piezoresistor is fixedly connected with a first fixed block, the outer side of a rotating shaft is fixedly connected with a protective cover, the bottom end of the piezoresistor is fixedly connected with a second fixed block, the outer side of a sliding rod is fixedly connected with a baffle plate, the bottom end of the second fixed block is fixedly connected with a spring, the right end of the piezoresistor is fixedly connected with a pin, and the top end of the pin is fixedly connected with a third clamping block, the utility model has the advantages that a lead is threaded at the notch of the pin, the lead is extruded and fixed by pushing an L-shaped extruding plate, the operation is simple, the protective function is realized, the first clamping block is rotated to the inner side of the second fixed block by rotating the protective cover, the safety of the device is improved, the device has wide market value and is worth popularizing.

Description

Low-inherent-capacitance piezoresistor

Technical Field

The utility model relates to a resistor technical field specifically is a low inherent capacitance piezoresistor.

Background

The piezoresistor is a voltage-limiting element sensitive to voltage change, and is characterized in that: at a given temperature, when the voltage exceeds a certain critical value, the resistance value thereof is sharply reduced, the current passing through it is sharply increased, and the voltage and the current do not have a linear relationship, and thus, the varistor is also called a nonlinear varistor.

However, the pins of the current piezoresistor are basically clamped by screws, the connection mode is easy to damage the wires, the screws are easy to slip, the wires are difficult to press, poor contact is caused, the wires are easy to be wet during placement, dust is easy to fall on the pins, and poor contact is caused, so that the piezoresistor with low inherent capacitance is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide the theme to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a low inherent capacitance piezoresistor, includes piezoresistor, the first fixed block of piezoresistor top fixedly connected with, the inboard rotation of first fixed block is connected with the pivot, pivot outside fixedly connected with protection casing, the first fixture block of protection casing left end low side fixedly connected with, piezoresistor bottom end fixedly connected with second fixed block, the inboard sliding connection in second fixed block bottom has the litter, litter outside fixedly connected with baffle, second fixed block bottom fixedly connected with spring, piezoresistor right-hand member fixedly connected with pin, pin top fixedly connected with third fixture block, the round bar has been placed to the pin inboard, round bar top fixedly connected with plank, the round bar bottom is rotated and is connected with the carousel, the crowded board of carousel bottom end fixedly connected with L type.

Preferably, a groove is formed in the inner side of the third clamping block, and the distance from the L-shaped extrusion plate to the bottom end of the inner side of the pin is consistent with the distance from the groove in the bottom side of the third clamping block to the L-shaped extrusion plate.

Preferably, the inner side of the right end of the second fixing block is provided with a hole, and the size of the hole is twice the width of the second fixture block.

Preferably, holes are formed in the front side and the rear side of the protective cover, and correspond to the notches in the inner sides of the pins.

Preferably, the bottom end of the spring is fixedly connected with the upper side of the bottom end of the sliding rod, and the spring is located at the circumferential position of the sliding rod.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the utility model, the lead is threaded at the notch of the pin through the arranged pin, the third fixture block, the rotary disc, the round bar and the L-shaped extrusion plate, the round bar is driven to rotate together by rotating the wood plate and then moves downwards, the round bar pushes the round disc and the L-shaped extrusion plate to move downwards together, so that the lead is extruded, the L-shaped extrusion plate prevents the lead from being exposed and fixes the lead, the contact area is increased, and the lead is prevented from being damaged;

2. the utility model discloses in, through pivot, protection casing, first fixture block, litter, spring and the baffle that sets up, the litter makes the spring tensile down, and through rotating the pivot, it is inboard to make protection casing and first fixture block rotatory to the second fixed block, loosens the litter, because the elasticity of spring makes the litter card in the inboard notch department of first fixture block, and very simple and easy fixes the protection casing, and protects pin department, has improved the security of this device.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic top view of the structure of fig. 1 according to the present invention;

FIG. 3 is a schematic view of the structure at A of FIG. 1 according to the present invention;

FIG. 4 is a schematic view of the structure of FIG. 1 at B according to the present invention;

fig. 5 is a schematic structural diagram of the point C in fig. 2 according to the present invention.

In the figure: the device comprises a piezoresistor, 2-a first fixed block, 3-a rotating shaft, 4-a protective cover, 5-a first fixture block, 6-a second fixed block, 7-a sliding rod, 8-a baffle, 9-a spring, 10-a pin, 11-a third fixture block, 12-a round rod, 13-a wood plate, 14-a rotary table and 15-an L-shaped extruded plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution:

the utility model provides a low inherent capacitance piezoresistor, including piezoresistor 1, the first fixed block 2 of 1 top fixedly connected with of piezoresistor, 2 inboard rotations of first fixed block are connected with

pivot

3, 3 outside fixedly connected with protection casing 4 of pivot, the first fixture block 5 of 4 left ends low side fixedly connected with of protection casing, 1 bottom fixedly connected with second fixed block 6 of piezoresistor, the inboard sliding connection in bottom of second fixed block 6 has litter 7, litter 7 outside fixedly connected with baffle 8, 6 bottom fixedly connected with springs 9 of second fixed block, 1 right-hand member fixedly connected with pin 10 of piezoresistor, pin 10 top fixedly connected with third fixture block 11, round bar 12 has been placed to pin 10 inboard, 12 top fixedly connected with planks 13 of round bar, 12 bottom rotations of round bar are connected with

carousel

14, 14 bottom fixedly connected with L type extruded sheet 15 of carousel.

A groove is formed in the inner side of the third clamping block 11, and the distance from the L-shaped extrusion plate 15 to the bottom end of the inner side of the pin 10 is consistent with the distance from the groove in the bottom side of the third clamping block 11 to the L-shaped extrusion plate 15, so that the L-shaped extrusion plate 15 can be fixed to the bottom end; a hole is formed in the inner side of the right end of the second fixing block 6, and the size of the hole is twice the width of the first fixture block 5, so that the first fixture block 5 can enter the inner side of the second fixing block 6; holes are formed in the front side and the rear side of the protective cover 4, and correspond to notches in the inner sides of the pins 10, so that the protective cover 4 is prevented from impacting the lead; the bottom end of the spring 9 is fixedly connected with the upper side of the bottom end of the slide rod 7, and the spring 9 is positioned at the circumferential position of the slide rod 7, so that the slide rod 7 can be automatically locked.

The working process is as follows: the zinc oxide voltage sensitive ceramic resistor disc of the voltage sensitive resistor 1 is made of ceramic, the temperature of the ceramic resistor disc in the firing process is 1190 degrees, the inherent capacitance is higher as the temperature is higher, the lowest temperature in the process of firing the ceramic resistor disc is fixed, the inherent capacitance of the voltage sensitive resistor 1 is reduced, when the device is installed, the slide rod 7 is pulled down, the slide rod 7 enables the spring 9 to stretch, the protective cover 4 is enabled to rotate upwards by rotating the rotating shaft 3, the slide rod 7 is released, the spring 9 is enabled to move upwards, the lead is threaded at the notch of the pin 10, the wood plate 13 is enabled to be separated from the notch of the third clamping block 11 by rotating the wood plate 13, the wood plate 13 drives the round rod 12 to rotate together, then the round rod 12 moves downwards, the round rod 12 pushes the round plate 14 and the L-shaped extruding plate 15 to move downwards together, so as to extrude the lead, the L-shaped extruding plate 15 prevents the lead from being exposed and, the safety is improved, at the moment, the sliding rod 7 is pulled down, the sliding rod 7 enables the spring 9 to stretch, the protective cover 4 and the first fixture block 5 are enabled to rotate to the inner side of the second fixture block 6 by rotating the rotating shaft 3, the sliding rod 7 is loosened, and due to the elastic force of the spring 9, the sliding rod 7 is enabled to be clamped at the notch on the inner side of the first fixture block 5, so that the protective cover 4 is fixed, and the installation is completed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A low intrinsic capacitance varistor comprising a varistor (1), characterized in that: the device is characterized in that a first fixed block (2) is fixedly connected to the top end of the piezoresistor (1), a rotating shaft (3) is rotatably connected to the inner side of the first fixed block (2), a protective cover (4) is fixedly connected to the outer side of the rotating shaft (3), a first clamping block (5) is fixedly connected to the lower side of the left end of the protective cover (4), a second fixed block (6) is fixedly connected to the bottom end of the piezoresistor (1), a sliding rod (7) is slidably connected to the inner side of the bottom end of the second fixed block (6), a baffle (8) is fixedly connected to the outer side of the sliding rod (7), a spring (9) is fixedly connected to the bottom end of the second fixed block (6), a pin (10) is fixedly connected to the right end of the piezoresistor (1), a third clamping block (11) is fixedly connected to the top end of the pin (10), a, the bottom end of the round rod (12) is rotatably connected with a turntable (14), and the bottom end of the turntable (14) is fixedly connected with an L-shaped extrusion plate (15).

2. A low intrinsic capacitance varistor as recited in claim 1, wherein: and a groove is formed in the inner side of the third clamping block (11), and the distance from the L-shaped extrusion plate (15) to the bottom end of the inner side of the pin (10) is consistent with the distance from the groove in the bottom side of the third clamping block (11) to the L-shaped extrusion plate (15).

3. A low intrinsic capacitance varistor as recited in claim 1, wherein: and a hole is formed in the inner side of the right end of the second fixing block (6), and the size of the hole is twice the width of the first fixing block (5).

4. A low intrinsic capacitance varistor as recited in claim 1, wherein: holes are formed in the front side and the rear side of the protective cover (4), and correspond to the notches in the inner sides of the pins (10).

5. A low intrinsic capacitance varistor as recited in claim 1, wherein: the bottom end of the spring (9) is fixedly connected with the upper side of the bottom end of the sliding rod (7), and the spring (9) is located at the circumferential position of the sliding rod (7).