CN216311480U

CN216311480U - Novel piezoresistor with plastic package structure

Info

Publication number: CN216311480U
Application number: CN202121804209.5U
Authority: CN
Inventors: 石开轩; 吴燕青; 胡安苹; 余熙北; 程时淼; 杨全芹; 张刚; 曾德备; 张波; 石向东
Original assignee: Shenzhen Weilin Hi Tech Co ltd
Current assignee: Shenzhen Weilin Hi Tech Co ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-04-15
Anticipated expiration: 2031-08-02

Abstract

The utility model discloses a novel piezoresistor with a plastic package structure, which comprises a protection structure, an external aluminum shell, side supporting shells and conductive supporting legs, wherein the protection structure is arranged outside the external aluminum shell, the side supporting shells are arranged on two sides of the outside of the external aluminum shell, the conductive supporting legs are arranged on two sides of the outside of the side supporting shells, an internal plastic package filler is filled in the external aluminum shell, an internal resistance sheet is wrapped in the internal plastic package filler, an internal conductive rod is arranged in the internal resistance sheet, and two ends of the internal conductive rod penetrate through the side supporting shells and are provided with fixing nuts. The outer polyethylene insulating layer is electroplated outside the outer aluminum shell, has good chemical properties, is good in acid resistance and corrosion resistance and is not easy to corrode in air, and the chromium coating is arranged outside the outer polyethylene insulating layer and does not have conductivity, so that the resistor has insulating property.

Description

Novel piezoresistor with plastic package structure

Technical Field

The utility model relates to the technical field of piezoresistors, in particular to a novel piezoresistor with a plastic package structure.

Background

The voltage dependent resistor is a resistor device with nonlinear current-voltage characteristics, and is mainly used for voltage clamping when a circuit bears overvoltage, and absorbing redundant current to protect a sensitive device. The resistor material of the varistor is a semiconductor, so it is one of the semiconductor resistors. When the voltage applied to the varistor is below its threshold value, the current flowing through it is extremely small, corresponding to a resistance of infinite value. That is, when the voltage across it is below its threshold, it behaves as an open-state switch. When the voltage across the varistor exceeds its threshold, the current flowing through it increases sharply, corresponding to a resistance of infinitesimal magnitude. That is, when the voltage applied to it is above its threshold, it behaves as a closed-state switch.

However, the novel piezoresistor of the existing plastic packaging structure has the problems of poor external insulation effect, poor corrosion resistance, inconvenience in disassembly and inconvenience in installation on a circuit board.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel piezoresistor with a plastic package structure to solve the problems of poor insulation effect, poor corrosion resistance, inconvenient disassembly and inconvenient installation in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a novel piezo-resistor of plastic envelope structure, includes protective structure, outside aluminum hull, side support shell and electrically conductive supporting legs, outside aluminum hull outside is provided with protective structure, the outside both sides of outside aluminum hull are provided with the side support shell, the outside both sides of side support shell are provided with electrically conductive supporting legs, outside aluminum hull inside packing has inside plastic envelope filler, the inside parcel of inside plastic envelope filler has inside resistance card, the inside of inside resistance card is provided with inside conducting rod, the both ends of inside conducting rod are passed the side and are supported the shell and be provided with fixation nut.

Preferably, the inner conductive rod penetrates through the center of the conductive supporting leg, the conductive supporting leg is fixed on the side supporting shell through the fixing nut, and the side supporting shell achieves the supporting purpose.

Preferably, the side surfaces of the conductive supporting legs are provided with a plurality of heat dissipation holes, the heat dissipation holes are formed in the conductive supporting legs and extend to the side supporting shell and the inside of the external aluminum shell, and the heat dissipation holes are convenient for dissipating heat inside the device.

Preferably, the interior of protective structure has set gradually chromium coating and outside polyethylene insulating layer, the surface of outside aluminum hull is electroplated to outside polyethylene insulating layer, the surface coating of outside polyethylene insulating layer has chromium coating, and outside polyethylene insulating layer has played insulating purpose.

Preferably, the outside both sides of outside aluminum hull and side support shell are provided with the joint structure, electrically conductive supporting legs bottom is provided with the pin, the top of pin is provided with coupling nut, coupling nut fixes pin and electrically conductive supporting legs each other, the outside of pin is provided with the elasticity card, and the elasticity card has played the purpose of joint.

Preferably, the inside of joint structure has set gradually first buckle and second buckle, and the second buckle sets up the outside at outside aluminum hull, and first buckle setting supports the outside of shell in the side, and first buckle mutually supports with the second buckle. The clamping structure is convenient for the device to be disassembled.

Compared with the prior art, the utility model has the beneficial effects that: the novel piezoresistor with the plastic package structure is reasonable in structure and has the following advantages:

(1) through being provided with chromium-plated layer, outside polyethylene insulation layer and having realized the resistance external insulation and have the purpose of corrosion resisting property, consequently, the outside electricity of outside aluminum hull has outside polyethylene insulation layer, and outside polyethylene insulation layer has good chemical properties, and acidproof, corrosion resisting property is good, is difficult to corrode in the air, and the outside of outside polyethylene insulation layer is provided with chromium-plated layer, and chromium-plated layer does not have electric conductivity to make the resistance have insulating property.

(2) Through being provided with outside aluminum hull, the side supports the shell, fixation nut, the purpose of convenient dismantlement has been realized to first buckle and second buckle, current device is generally all integrative, lead to the internal damage to be difficult to change, therefore, in use, through rotating fixation nut, fixation nut separates with inside conducting rod, then take off through electrically conductive supporting legs, then through breaking first buckle off with the fingers and thumb, first buckle separates with the second buckle, thereby outside aluminum hull will separate with the side supports the shell, thereby conveniently open outside aluminum hull, the convenience is maintained internally.

(3) The purpose of convenient installation is realized through being provided with electrically conductive supporting legs, pin and elasticity card, and the current device is inconvenient to be installed on the circuit board, consequently, during the use, through installing electrically conductive supporting legs on, then fix the pin through coupling nut, then insert the circuit board through the pin on, will block in the corresponding hole on the circuit board through the elasticity card, realized simple to operate's purpose.

Drawings

FIG. 1 is a front view of the external structure of the present invention;

FIG. 2 is a schematic front view of the internal structure of the present invention;

FIG. 3 is a schematic side view of a portion of the present invention;

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

FIG. 5 is an enlarged view of the structure at B in FIG. 1 according to the present invention;

fig. 6 is an enlarged structural diagram of the interior of the protective structure of the present invention.

In the figure: 1. a protective structure; 101. a chromium plating layer; 102. an outer polyethylene insulation layer; 2. an outer aluminum shell; 3. a side support shell; 4. fixing a nut; 5. an inner conductive rod; 6. the conductive supporting leg; 7. a pin; 8. a clamping structure; 801. a first buckle; 802. a second buckle; 9. an internal resistor disc; 10. an internal plastic package filler; 11. heat dissipation holes; 12. a connecting nut; 13. an elastic card.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-6, an embodiment of the present invention is shown: a novel piezoresistor with a plastic package structure comprises a protective structure 1, an external aluminum shell 2, a side supporting shell 3 and conductive supporting legs 6, wherein the protective structure 1 is arranged outside the external aluminum shell 2, a chromium coating 101 and an external polyethylene insulating layer 102 are sequentially arranged inside the protective structure 1, the external polyethylene insulating layer 102 is electroplated on the surface of the external aluminum shell 2, and the chromium coating 101 is coated on the surface of the external polyethylene insulating layer 102;

an external polyethylene insulating layer 102 is electroplated outside the external aluminum shell 2, the external polyethylene insulating layer 102 has good chemical properties, is good in acid resistance and corrosion resistance and is not easy to corrode in the air, a chromium coating 101 is arranged outside the external polyethylene insulating layer 102, and the chromium coating 101 does not have conductivity, so that the resistor has insulating property;

two sides of the outer part of the outer aluminum shell 2 are provided with side supporting shells 3, the side supporting shells 3 play a supporting role, two sides of the outer part of the side supporting shells 3 are provided with conductive supporting feet 6, the conductive supporting feet 6 play a conductive role, the inner part of the outer aluminum shell 2 is filled with an inner plastic package filler 10, the inner part of the inner plastic package filler 10 is wrapped with an inner resistance sheet 9, an inner conductive rod 5 is arranged inside the inner resistance sheet 9, the inner conductive rod 5 plays a conductive role, and two ends of the inner conductive rod 5 penetrate through the side supporting shells 3 and are provided with fixing nuts 4;

the inner conductive rod 5 penetrates through the center of the conductive supporting leg 6, and the fixing nut 4 fixes the conductive supporting leg 6 on the side supporting shell 3;

the side surfaces of the conductive supporting legs 6 are provided with a plurality of heat dissipation holes 11, the heat dissipation holes 11 play a role in heat dissipation, the heat dissipation holes 11 are arranged on the conductive supporting legs 6, and the heat dissipation holes 11 extend to the side supporting shell 3 and extend to the inside of the external aluminum shell 2;

clamping structures 8 are arranged on two sides of the outer portions of the outer aluminum shell 2 and the side supporting shell 3, pins 7 are arranged at the bottoms of the conductive supporting legs 6, the pins 7 are convenient to mount on a circuit board, connecting nuts 12 are arranged at the tops of the pins 7, the connecting nuts 12 fix the pins 7 and the conductive supporting legs 6 mutually, and elastic clamping pieces 13 are arranged outside the pins 7;

when the conductive support leg is used, the conductive support leg is mounted on the conductive support leg 6, the pin 7 is fixed through the connecting nut 12, the conductive support leg is inserted into a circuit board through the pin 7, and the conductive support leg is clamped in a corresponding hole in the circuit board through the elastic clamping piece 13, so that the purpose of convenience in mounting is achieved;

a first buckle 801 and a second buckle 802 are sequentially arranged inside the clamping structure 8, the second buckle 802 is arranged outside the external aluminum shell 2, the first buckle 801 is arranged outside the lateral support shell 3, and the first buckle 801 and the second buckle 802 are matched with each other;

during the use, through rotating fixation nut 4, fixation nut 4 parts with inside conducting rod 5, then through taking off electrically conductive supporting legs 6, then through breaking first buckle 801 off with the fingers and thumb, first buckle 801 parts with second buckle 802 to outside aluminum hull 2 will part with side support shell 3, thereby conveniently opens outside aluminum hull 2, conveniently maintains to inside.

When the embodiment of the application is used, the lead 7 is fixed through the connecting nut 12 by being installed on the conductive supporting leg 6, then the lead 7 is inserted into the circuit board, and the lead is clamped in the corresponding hole on the circuit board through the elastic clamping piece 13, so that the rapid installation is realized, the outer polyethylene insulating layer 102 is electroplated outside the outer aluminum shell 2, the outer polyethylene insulating layer 102 has good chemical performance, acid resistance and corrosion resistance, and is not easy to corrode in the air, the chromium coating 101 is arranged outside the outer polyethylene insulating layer 102, the chromium coating 101 does not have conductivity, so that the resistor has insulating property, when the resistor is internally damaged, the fixing nut 4 is separated from the inner conductive rod 5 by rotating the fixing nut 4, then the first buckle 801 is separated from the second buckle 802 by taking down the conductive supporting leg 6, and then the first buckle 801 is pulled, thereby outside aluminum hull 2 will part with side support shell 3 to the convenience is opened outside aluminum hull 2, is convenient to inside maintenance.

Claims

1. The utility model provides a novel piezo-resistor of plastic envelope structure which characterized in that: including protective structure (1), outside aluminum hull (2), side support shell (3) and electrically conductive supporting legs (6), outside aluminum hull (2) outside is provided with protective structure (1), outside both sides of aluminum hull (2) outside are provided with side support shell (3), the outside both sides of side support shell (3) are provided with electrically conductive supporting legs (6), outside aluminum hull (2) inside packing has inside plastic envelope filler (10), the inside parcel of inside plastic envelope filler (10) has internal resistance piece (9), the inside of internal resistance piece (9) is provided with inside conducting rod (5), the both ends of inside conducting rod (5) are passed side support shell (3) and are provided with fixation nut (4).

2. The novel piezoresistor of plastic package structure according to claim 1, characterized in that: the inner conductive rod (5) penetrates through the center of the conductive supporting leg (6), and the conductive supporting leg (6) is fixed on the side supporting shell (3) by the fixing nut (4).

3. The novel piezoresistor of plastic package structure according to claim 1, characterized in that: the side face of the conductive supporting leg (6) is provided with a plurality of heat dissipation holes (11), the heat dissipation holes (11) are formed in the conductive supporting leg (6), and the heat dissipation holes (11) extend to the side face supporting shell (3) and extend to the inside of the external aluminum shell (2).

4. The novel piezoresistor of plastic package structure according to claim 1, characterized in that: the interior of protective structure (1) has set gradually chromium-plated layer (101) and outside polyethylene insulating layer (102), the surface of outside aluminum hull (2) is electroplated to outside polyethylene insulating layer (102), the surface coating of outside polyethylene insulating layer (102) has chromium-plated layer (101).

5. The novel piezoresistor of plastic package structure according to claim 1, characterized in that: outside aluminium shell (2) and the outside both sides of side support shell (3) are provided with joint structure (8), electrically conductive supporting legs (6) bottom is provided with pin (7), the top of pin (7) is provided with coupling nut (12), coupling nut (12) pin (7) and electrically conductive supporting legs (6) reciprocal anchorage, the outside of pin (7) is provided with elasticity card (13).

6. The novel piezoresistor of plastic package structure according to claim 5, characterized in that: the inside of joint structure (8) is provided with first buckle (801) and second buckle (802) in proper order, and second buckle (802) set up the outside in outside aluminum hull (2), and first buckle (801) set up the outside that supports shell (3) in the side, and first buckle (801) and second buckle (802) are mutually supported.