CN210167195U - High-voltage-resistant piezoresistor - Google Patents

Abstract

The utility model discloses a high-voltage-resistant piezoresistor, which comprises an exhaust duct, two raised lines and a casing, wherein one side of the casing is glued with the raised lines, the other side of the casing is detachably connected with a plastic baffle through a first positioning block, one side of the plastic baffle is connected with a pin B jack, the other side of the plastic baffle is connected with a pin A jack, and is glued with a quartz sand layer through the inner surface of the casing, meanwhile, the heat dissipation plate is hollowed out on the outer surface of the heat dissipation plate and made of aluminum, so that heat in the machine shell rapidly passes through the quartz sand layer, the heating panel that transmits on the heating panel of making aluminium under the effect of heat transfer discharges, and the heating panel that aluminium was made is good heat dissipation conductor, and it is not good to have solved current piezoresistor heat dissipation function, and the device can be because of having a large amount of electricity to pass through in the twinkling of an eye and give off a large amount of heats, if can't discharge, will influence the life's of equipment problem.

Description

High-voltage-resistant piezoresistor

Technical Field

The utility model relates to a piezoresistor makes technical field, specifically is an anti high pressure piezoresistor.

Background

The voltage dependent resistor is a resistor device with nonlinear volt-ampere characteristics, and is mainly used for clamping voltage 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. The zinc oxide (ZnO) piezoresistor which is widely used at present has the main material composed of divalent element zinc (Zn) and hexavalent element oxygen (O). So from a materials perspective, a zinc oxide varistor is a "ii-vi oxide semiconductor". In taiwan, the piezoresistor is called a "surge absorber" and is sometimes also called an "electric shock (surge) suppressor (absorber)".

With the wide application of piezoresistor in household electrical appliances and other electronic products, current piezoresistor has the heat dissipation function not good, and the device can be because of having a large amount of electricity in the twinkling of an eye to pass through and give out a large amount of heats, if can't discharge, will influence the life of equipment, and the security is not high, and when piezoresistor became invalid, easy production gas made the organism explode, and the inconvenient dismantlement of piezoresistor main part in the piezoresistor is changed, provides one kind for this reason and has resisted high voltage piezoresistor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti high pressure varistor 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 an anti high pressure varistor ware, includes air discharge duct, sand grip and casing, casing one side glues with the sand grip mutually, the sand grip is total two, the opposite side of casing passes through locating piece one and can dismantle with the plastics baffle and be connected, plastics baffle one side and pin B jack connection, the opposite side and the pin A jack connection of plastics baffle, plastics baffle surface fretwork is equipped with the air discharge duct, the casing surface glues mutually with the radiator plate.

Preferably, one end of the pin A is electrically connected with the first line through a wire, one end of the pin B is electrically connected with the second line through a wire, one side of the pin B is glued with the piezoresistor main body, the inner surface of the piezoresistor main body is fixedly connected with the circuit board through a fixing column, one side of the circuit board is welded with the second piezoresistor, the circuit board is welded with one side of the piezoresistor, and the piezoresistor tee joint is connected with the discharge tube in parallel.

Preferably, the casing further comprises a second positioning block, a limiting step and a quartz sand layer, the casing is glued with one end of the second positioning block, the inner surface of the casing is glued with the quartz sand layer, and the quartz sand layer is connected with the limiting step in a gluing mode.

Preferably, the outer surface of the heat dissipation plate is hollowed to form heat dissipation holes, and the heat dissipation plate is made of aluminum.

Preferably, the plastic baffle further comprises pin insertion holes and a limiting bump, the pin insertion holes are arranged in the outer surface of the plastic baffle in a hollow mode, and one side of the plastic baffle is glued with the limiting bump.

Preferably, the number of the pin jacks is two, the plastic baffle is detachably connected with the pin B through the pin jacks, and the distance between the pin B and the pin A is 7 mm.

Preferably, the piezoresistor main body is positioned inside a casing, and the casing is made of polyethylene insulating material.

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

1. the high-voltage-resistant piezoresistor is glued with the quartz sand layer through the inner surface of the machine shell, the outer surface of the radiating plate is provided with the radiating plate in a hollowed mode, the radiating plate is made of aluminum, heat in the machine shell rapidly passes through the quartz sand layer and is transmitted to the radiating plate made of aluminum to be exhausted under the action of heat transfer, and the radiating plate made of aluminum is a good radiating conductor, so that the problems that the existing piezoresistor is poor in radiating function, a large amount of heat is emitted due to instant passing of a large amount of electricity, and the service life of equipment is influenced if the heat cannot be exhausted are solved;

2. the high-voltage-resistant piezoresistor is made of the polyethylene insulating material, so that arc discharge can be inhibited, open fire in the case is avoided, and meanwhile, the outer surface of the plastic baffle is hollowed with the exhaust groove, so that gas generated when the piezoresistor fails is exhausted through the exhaust groove, and the problems that the existing piezoresistor is low in safety and the body is exploded due to the fact that gas is easily generated when the piezoresistor fails are solved;

3. according to the high-voltage-resistant piezoresistor, the other side of the casing is detachably connected with the plastic baffle through the first positioning block, and meanwhile, the casing is glued with one end of the second positioning block, so that an installer can directly fix the plastic baffle through the first positioning block and the second positioning block, when the piezoresistor main body is replaced by detaching the plastic baffle, the exhaust groove can be directly scratched, and the plastic baffle can be taken down, so that the problem that the piezoresistor main body in the conventional piezoresistor is inconvenient to detach and replace is solved;

4. this kind of anti high voltage piezoresistor crosses the wire through the piezoresistor tee and puts a tub parallel connection, and circuit board one side welds with two weldings of piezoresistor to circuit board and one side welding of piezoresistor make a piezoresistor establish ties with three of piezoresistor, and piezoresistor one and three parallelly connected with two of piezoresistor, utilize simultaneously to put down the tub and can restrict surge voltage, play overvoltage protection effect to the circuit, thereby make the utility model discloses certain anti high pressure ability has.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of the main structure of the varistor of the present invention;

FIG. 3 is a schematic view of a partial structure of the present invention;

FIG. 4 is a schematic view of the structure of the heat dissipation plate of the present invention;

fig. 5 is a schematic view of the plastic baffle of the present invention.

In the figure: the air exhaust device comprises an air exhaust groove 1, convex strips 2, a machine shell 3, a heat dissipation plate 4, a first positioning block 5, a plastic baffle 6, a pin A7, a pin B8, a first circuit 9, a first piezoresistor 10, a piezoresistor main body 11, a second piezoresistor 12, a third piezoresistor 13, a second circuit 14, a discharge tube 15, a second positioning block 16, a limiting step 17, a quartz sand layer 18, a heat dissipation hole 19, a pin jack 20, a limiting bump 21 and a circuit board 22.

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 technical scheme in the utility model, all other embodiments that ordinary skilled person in the art obtained under the prerequisite of not making the creative work all belong to the scope of the utility model protection.

Referring to fig. 1 to 5, the present invention provides a technical solution: the utility model provides an anti high pressure varistor ware, including air discharge duct 1, sand grip 2 and casing 3, 3 one side of casing and sand grip 2 veneer mutually, sand grip 2 is total two, the opposite side of casing 3 passes through locating piece one 5 and can dismantle with plastics baffle 6 and be connected, 6 one side of plastics baffle and pin B8 jack connection, the opposite side and the pin A7 jack connection of plastics baffle 6, 6 surface fretworks of plastics baffle are equipped with air discharge duct 1, 3 surfaces of casing and 4 veneers mutually of heating panel.

Furthermore, one end of the pin A7 is electrically connected with the first line 9 through a lead, one end of the pin B8 is electrically connected with the second line 14 through a lead, one side of the pin B8 is glued with the varistor main body 11, the inner surface of the varistor main body 11 is fixedly connected with the circuit board 22 through a fixing column, one side of the circuit board 22 is welded with the second varistor 12, the circuit board 22 is welded with one side of the first varistor 10, the circuit board 22 is welded with one side of the third varistor 13, and the third varistor 13 is connected with the discharge tube 15 in parallel through a lead, so that the discharge tube is connected with the.

Further, the casing 3 further comprises a second positioning block 16, a limiting step 17 and a quartz sand layer 18, the casing 3 is glued with one end of the second positioning block 16, the inner surface of the casing 3 is glued with the quartz sand layer 18, and the quartz sand layer 18 is glued with the limiting step 17, so that the piezoresistor main body 11 is placed in the casing 3 and cannot easily shake due to limitation of the limiting step 17.

Further, the fretwork of 4 surfaces of heating panel is equipped with louvre 19, and heating panel 4 adopts aluminium to make, makes the utility model discloses have the heat dissipation function to the practicality has.

Further, the plastic baffle 6 further comprises a pin jack 20 and a limiting bump 21, the pin jack 20 is arranged on the outer surface of the plastic baffle 6 in a hollow mode, and one side of the plastic baffle 6 is glued with the limiting bump 21.

Further, the pin insertion holes 20 are two in number, the plastic baffle 6 is detachably connected with the pin B8 through the pin insertion holes 20, and the distance between the pin B8 and the pin A7 is 7 mm.

Further, piezo-resistor main part 11 is located inside casing 3, and casing 3 adopts polyethylene insulation material to make, makes the utility model discloses can restrain arc discharge, avoid appearing the naked light in the casing 3.

The working principle is as follows: an operator puts the piezoresistor main body into the machine shell 3 in advance, then the utility model is installed into a designated electric appliance or a circuit board through the pin A7 and the pin B8, the other side of the machine shell 3 is detachably connected with the plastic baffle 6 through the first positioning block 5, simultaneously, the machine shell 3 is glued with one end of the second positioning block 16, so that the installer can directly fix the plastic baffle 6 with the second positioning block 16 through the first positioning block 5, when the piezoresistor main body 11 is replaced by detaching the plastic baffle 6, the exhaust groove 1 can be directly scratched, the plastic baffle 6 is taken down, the problem that the piezoresistor main body in the traditional piezoresistor is inconvenient to detach and replace is solved, then the inner surface of the machine shell 3 is glued with the quartz sand layer 18, meanwhile, the outer surface of the radiating plate 4 is hollowed out to be provided with the radiating plate 4, and the radiating plate 4 is made of aluminum, so that the heat in, give the heating panel 4 of the transmission on the heating panel 4 of aluminium of making under the effect of heat transfer and discharge, the heating panel 4 that the aluminium was made is good heat dissipation conductor, it is not good to have solved current piezoresistor heat dissipation function, the device can be because of having a large amount of electricity to pass through in the twinkling of an eye and give off a large amount of heats, if unable discharge, the problem that will influence the life of equipment, it makes to recycle casing 3 adopts polyethylene insulating material, can restrain arc discharge, the naked light appears in avoiding casing 3, 6 surface fretworks of plastics baffle are equipped with exhaust duct 1 simultaneously, make the gas that produces when piezoresistor became invalid discharge through exhaust duct 1, it is not high to have solved current piezoresistor security, when piezoresistor became invalid, produce gas easily and make the problem that the organism was exploded.

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 (7)

1. The utility model provides an anti high pressure varistor ware, includes air discharge duct (1), sand grip (2) and casing (3), its characterized in that, casing (3) one side and sand grip (2) veneer mutually, sand grip (2) are total two, the opposite side of casing (3) passes through locating piece (5) and can dismantle with plastics baffle (6) and be connected, plastics baffle (6) one side and pin B (8) jack connection, the opposite side and pin A (7) jack connection of plastics baffle (6), plastics baffle (6) surface fretwork is equipped with air discharge duct (1), casing (3) surface and heating panel (4) veneer mutually.

2. A high voltage resistant varistor as claimed in claim 1, wherein: one end of the pin A (7) is electrically connected with the first line (9) through a wire, one end of the pin B (8) is electrically connected with the second line (14) through a wire, one side of the pin B (8) is glued with the piezoresistor main body (11), the inner surface of the piezoresistor main body (11) is fixedly connected with the circuit board (22) through a fixing column, one side of the circuit board (22) is welded with the second piezoresistor (12), the circuit board (22) is welded with one side of the first piezoresistor (10), the circuit board (22) is welded with one side of the third piezoresistor (13), and the third piezoresistor (13) is connected with the discharge tube (15) in parallel through a wire.

3. A high voltage resistant varistor as claimed in claim 1, wherein: the casing (3) further comprises a second positioning block (16), a limiting step (17) and a quartz sand layer (18), the casing (3) is glued with one end of the second positioning block (16), the inner surface of the casing (3) is glued with the quartz sand layer (18), and the quartz sand layer (18) is glued with the limiting step (17).

4. A high voltage resistant varistor as claimed in claim 1, wherein: the radiating plate (4) is provided with radiating holes (19) in a hollow mode in the outer surface, and the radiating plate (4) is made of aluminum.

5. A high voltage resistant varistor as claimed in claim 1, wherein: the plastic baffle (6) further comprises pin insertion holes (20) and limiting convex blocks (21), the pin insertion holes (20) are arranged in the hollow outer surface of the plastic baffle (6), and one side of the plastic baffle (6) is glued with the limiting convex blocks (21).

6. A high voltage resistant varistor according to claim 5, characterized in that: the pin jacks (20) are two in number, the plastic baffle (6) is detachably connected with the pin B (8) through the pin jacks (20), and the distance between the pin B (8) and the pin A (7) is 7 mm.

7. A high voltage resistant varistor according to claim 2, characterized in that: the piezoresistor main body (11) is positioned inside the machine shell (3), and the machine shell (3) is made of polyethylene insulating materials.

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