CN218633325U - Surge protector and electronic equipment - Google Patents

Abstract

The application provides a surge protector and electronic equipment relates to surge protection field, and surge protector includes base, first conducting rod and piezo-resistor, first conducting rod with the piezo-resistor interval set up in on the base, the interval is provided with first pin and second pin on the piezo-resistor, first pin is connected with the power end, be provided with the second conducting rod on the first pin, the second pin is the ground connection pin, the one end of first conducting rod pass through low temperature tin soldering the mode with the second conducting rod is connected, and the other end is connected with the power end, first conducting rod is in can break away from when the surge appears in the power end the second conducting rod to keeping away from the direction removal of second conducting rod makes first conducting rod can break away from under the fusing temperature of low temperature tin the second conducting rod can cut off the current return circuit when the surge appears in the power end, and the security performance is good.

Description

Surge protector and electronic equipment

Technical Field

The application relates to the field of surge protection, in particular to a surge protector and electronic equipment.

Background

Surges, also called surges, are a sharp pulse that occurs in just a few millionths of a second, and when a surge occurs, the magnitude of the voltage current exceeds twice the normal value. The source of the power supply system surge is divided into an external reason and an internal reason, wherein the external reason is mainly a lightning reason, and the internal reason is mainly the start and stop of electrical equipment, faults and the like. In electronic design, surge mainly refers to a strong pulse generated by a transient when a power supply is just turned on, and the circuit is likely to be burned out at a moment of the surge, such as PN junction capacitance breakdown, resistance burn-out and the like, because the linearity of the circuit is possibly higher than that of the pulse of the power supply, or because the power supply or other parts in the circuit are interfered by self or external sharp pulses, namely the surge.

The surge protector is a protection device which is mainly used for limiting overvoltage and overcurrent flowing into a circuit, has high-efficiency protection effect on electronic equipment, and can be switched on and shunted in a very short time when spike current or voltage is suddenly generated in an electric loop or a communication circuit due to external interference, so that other electronic equipment in the loop is prevented from being damaged by surge.

The existing surge protector is mainly a structure that a temperature fuse is attached to the surface of a piezoresistor, and the temperature fuse generates heat through the failure of the piezoresistor so as to conduct the heat of the piezoresistor to the fuse, so that the temperature fuse is disconnected and a current loop is disconnected. When the power frequency current in the loop is 1-10A, the temperature fuse can be fused by heat conducted on the surface of the piezoresistor, but when the power frequency current in the loop is more than 10A, the temperature fuse does not reach the fusing temperature, the current loop cannot be cut off, and the piezoresistor is ignited and burnt, so that potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the application provides a surge protector and an electronic device.

In a first aspect, the present application provides a surge protector, including: the device comprises a base, a first conducting rod and a piezoresistor, wherein the first conducting rod and the piezoresistor are arranged on the base at intervals, a first pin and a second pin are arranged on the piezoresistor at intervals, the first pin is connected with a power supply end, a second conducting rod is arranged on the first pin, the second pin is a grounding pin, one end of the first conducting rod is connected with the second conducting rod in a low-temperature soldering mode, the other end of the first conducting rod is connected with the power supply end, and the first conducting rod can be separated from the second conducting rod when the power supply end surges and moves towards the direction far away from the second conducting rod.

With reference to the first aspect, in one possible implementation, the surge protector further includes: the partition plate is arranged between the first conducting rod and the piezoresistor and connected with the base.

With reference to the first aspect, in one possible implementation, the surge protector further includes: the elastic sheet is arranged on the partition board and used for pushing the first conducting rod to move towards the direction far away from the second conducting rod.

With reference to the first aspect, in one possible embodiment, the spacer is an insulator.

With reference to the first aspect, in a possible implementation manner, a first slot is provided on the partition board, and the second conductive rod is inserted into the first slot.

With reference to the first aspect, in one possible implementation, the surge protector further includes: the first limiting strips are arranged on the base and connected with the partition plate, the first limiting strips are oppositely arranged, and the first limiting strips and the partition plate and the base form a first limiting groove for accommodating the first conducting rod.

With reference to the first aspect, in a possible implementation manner, a second slot is disposed on the base, the second slot is located at the bottom end of the first limiting groove, and one end of the first conducting rod, which is far away from the second conducting rod, is inserted into the second slot.

With reference to the first aspect, in a possible implementation manner, the surge protector further includes: the protective cover is sleeved on the partition plate.

With reference to the first aspect, in one possible implementation, the protective cover is detachably connected to the base.

In a second aspect, the present application provides an electronic device, including the surge protector described above.

Compare prior art, the beneficial effect of this application:

the utility model provides a surge protector, the power end with first pin varistor the second conducting rod reaches first conducting rod forms closed current loop, works as when varistor's temperature risees, varistor passes through the second conducting rod conducts the heat extremely the second conducting rod with the junction of first conducting rod, and first conducting rod pass through the mode of low temperature soldering with the second conducting rod is connected, and the fusing temperature of temperature fuse is higher than the melting point temperature of soldering, thereby makes first conducting rod with the welding department of second conducting rod is fused under the fusing temperature that is less than temperature fuse, works as when surge appears in the power end, varistor temperature risees and conducts the heat to department, when the temperature of soldering department reaches the melting point of tin, the second conducting rod with first conducting rod disconnection to the direction of keeping away from second conducting rod removes, can be in the power end when appearing cut off current's return circuit, can effectively prevent varistor's continuation of varistor, has reduced the potential safety hazard, and the surge performance is good.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 shows an exploded view of a surge protector;

fig. 2 shows a schematic view of the overall structure of the surge protector;

fig. 3 shows a schematic diagram of a partially exploded structure of a surge protector;

fig. 4 shows a schematic structure of the current input end of the surge protector in a stretching state;

FIG. 5 is a schematic diagram showing a configuration in which a current input terminal of the surge protector is disconnected from the second conductive rod;

fig. 6 shows a schematic diagram of a varistor of the surge protector;

fig. 7 shows a schematic structural view of a protective cover of the surge protector;

fig. 8 is a schematic view showing the overall structure of a surge protector in another embodiment;

fig. 9 shows a partially exploded view of a surge protector in another embodiment.

Description of the main element symbols:

100-a base; 110-a base plate; 111-a second slot; 112-a third slot; 113-a fourth slot; 114-a cushion block; 115-shrapnel; 120-side plate; 121-a fixture block; 200-a separator; 210-a first slot; 300-a first conductive rod; 310-current input; 320-current output; 400-a voltage dependent resistor; 410-a first pin; 420-a second pin; 430-a second conductive rod; 500-a first stop bar; 600-a protective cover; 610-card slot; 700-second stop bar.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example one

Referring to fig. 1 to 2, an embodiment of the present invention provides a surge protector, including: a base 100, a partition 200, a first conductive rod 300, a pressure sensitive resistor 400 and a protective cover 600. The first conductive rod 300 and the piezoresistor 400 are arranged on the base 100 at an interval. The partition board 200 is disposed between the first conductive rod 300 and the varistor 400. The protective cover 600 is sleeved on the partition board 200, and the open end of the protective cover 600 is detachably connected with the base 100. The varistor 400 is connected to the first conductive rod 300.

Referring to fig. 3, in some embodiments, the base 100 includes: a bottom plate 110 and side plates 120. The side plates 120 are two oppositely arranged, and the side plates 120 are L-shaped side plates. The bottom plate 110 is disposed between the two side plates 120, and the bottom plate 110 is connected to the two side plates 120.

In some embodiments, the side plates 120 are insulators. The base plate 110 is an insulator.

In some embodiments, the side plate 120 is made of ceramic. The base plate 110 is made of ceramic.

In some embodiments, the partition board 200 is disposed between the two side plates 120, the partition board 200 is connected to the bottom plate 110, the partition board 200 is an insulator, and the partition board 200 is used to separate the varistor 400 from the first conductive rod 300.

Referring to fig. 3, in some embodiments, the partition board 200 is provided with a first slot 210. The first slot 210 is located at an end of the partition board 200 far from the bottom board 110.

Referring to fig. 3, 4 and 6, in some embodiments, the varistor 400 is provided with a first lead 410 and a second lead 420. The varistor 400 is cylindrical. One end of the first pin 410 is soldered to one end of the varistor 400, and the other end is connected to a power source. One end of the second pin 420 is soldered to the varistor 400, and the other end is grounded, and the second pin 420 is located at an end of the varistor 400 far from the first pin 410.

In some embodiments, the first lead 410 is a profiled lead, and the first lead 410 includes at least 2 bending portions. The second pin 420 is a special-shaped pin, and the second pin 420 includes at least 3 bending portions.

In some embodiments, an epoxy encapsulation layer is provided on the varistor 400. An epoxy encapsulating layer is arranged on the second pin 420.

In some embodiments, the cross-sectional area of the varistor 400 is less than the cross-sectional area of the spacer 200.

In some embodiments, a second conductive rod 430 is disposed on the first pin 410. The second conductive rod 430 is an electrode rod, one end of the second conductive rod 430 is connected to one end of the first pin 410 away from the power end, the other end of the second conductive rod is inserted into the first slot 210, and the second conductive rod 430 is matched with the first slot 210.

In some embodiments, the second conductive rod 430 is a copper rod.

Referring to fig. 3 to 5, in some embodiments, one end of the first conductive rod 300 connected to the second conductive rod 430 is a current input end 310, and the other end is a current output end 320. The current input end 310 is welded to the second conductive rod 430 by low-temperature soldering, the current output end 320 is located at one end of the partition board 200 close to the open end, and the current input end 310 is located at one side of the current output end 320 close to the first slot 210. When the temperature of the welding position of the current input end 310 and the second conductive rod 430 is higher than the melting point of tin, the welding position is fused, and the current input end 310 is disconnected from the second conductive rod 430.

In some embodiments, the first conductive rod 300 is a special-shaped conductive rod, at least 7 bending portions are disposed on the first conductive rod 300, and the current input end 310 is a bending portion. The current output end 320 is a straight portion. When the power end generates surge, the current in the power end flows into the current input end 310 through the first pin 410, the voltage dependent resistor 400 and the second conducting rod 430, and flows out from the current output end 320 to the alarm device to form a closed loop, so that the alarm device is started and sends out alarm prompt.

In some embodiments, the first conductive rod 300 is one of a stainless steel wire, a spring wire, a hard steel wire, a spring steel, a piano wire, a phosphor copper wire, and a beryllium copper wire.

Referring to fig. 3, in some embodiments, the bottom plate 110 is provided with a second slot 111, a third slot 112, a fourth slot 113 and a pad 114. The second slot 111 is located at one side of the first slot 210, the current output end 320 is inserted into the second slot 111, and the current input end 310 is welded to the second conductive rod 430 by low-temperature soldering, so that the current input end 310 is in a stretched state, and in the stretched state, the current input end 310 has a tendency to move in a direction away from the second conductive rod 430. The third slot 112 is disposed at one side of the second slot 111. One end of the first pin 410, which is far away from the second conductive rod 430, is inserted into the third slot 112. The fourth slot 113 is disposed on a side of the second slot 111 away from the third slot 112. One end of the second pin 420, which is far away from the varistor 400, is inserted into the fourth slot 113. The spacers 114 are connected to an end of the bottom plate 110 away from the first slot 210, and the two spacers 114 are disposed oppositely.

In some embodiments, the current output 320 and the second slot 111 are matched with each other. The first pin 410 and the third socket 112 are mated with each other. The second pin 420 and the fourth socket 113 are matched with each other.

In some embodiments, the second slot 111, the third slot 112 and the fourth slot 113 are equal in size and are located on the same horizontal line.

In some embodiments, there is a first distance between the second slot 111 and the third slot 112, and a second distance between the second slot 111 and the fourth slot 113, and the first distance and the second distance are equal.

In some embodiments, the first slot 210 and the second slot 111 are equal in size.

Referring to fig. 3 to 5, in some embodiments, a first limiting strip 500 is disposed on the bottom plate 110. The first stopper 500 is prism-shaped, the first stopper 500 is connected to the bottom plate 110, the first stopper 500 is connected to the partition plate 200, the first stopper 500 is provided in two opposite positions, and the first stopper 500 is an insulator.

In some embodiments, two of the first spacing bars 500 form a first spacing groove with the partition board 200 and the bottom plate 110 for accommodating the current output end 320 of the first conductive rod 300. The second slot 111 is disposed at the bottom of the first limiting groove.

In some embodiments, the base 100 is a square base. The partition board 200 is a square partition board.

Referring to fig. 8 and 9, in another embodiment, the partition 200 is a circular partition. The partition board 200 is further provided with: the spring plate 115 and the second limiting strip 700. The second stopper bar 700 is prism-shaped, and the second stopper bar 700 is connected to the separator 200. The two second limiting strips 700 are oppositely arranged, and the second limiting strips 700 are insulators. The two second limiting strips 700 and the bottom plate 110 form a second limiting groove for accommodating the elastic sheet 115. The elastic piece 115 is a U-shaped elastic piece, one end of the elastic piece 115 is inserted into the second receiving groove, and the other end of the elastic piece 115 abuts against the current input end 310, so that the current input end 310 has a tendency to move in a direction away from the second conductive rod 430.

The current output end 320 of the first conductive rod 300 is inserted into the second insertion slot 111 from the first limiting slot, the current input end 310 of the first conductive rod 300 is welded with the second conductive rod 430 by low-temperature soldering, so that the current input end 310 is in a stretched state, a first closed loop is formed by current of the power end through an external device, when the power end is in surge, including the situations of excessive current and excessive voltage, the current in the power end flows into the current input end 310 through the first pin 410, the piezoresistor 400 and the second conductive rod 430, and flows out from the current output end 320 to the alarm device to form a second closed loop, so that the alarm device in the second closed loop sends out an alarm prompt to remind workers in the field, the safety of the operation of the external device is improved, the second closed loop is connected in parallel with the first closed loop, the piezoresistor 400 in the second closed loop is influenced by heat, the heat generated by the piezoresistor 400 is transferred from the second conductive rod 430 to the second closed loop, and the second closed loop is disconnected from the current input end 310, and the second closed loop is disconnected from the fuse 430, so that the fuse wire 310 is broken temperature of the second conductive rod 430 is reduced, and the fuse wire can be disconnected from the second closed loop, and the fuse wire 310.

Referring to fig. 3, in some embodiments, a clamping block 121 is disposed on a side of the side plate 120 away from the first limiting strip 500. The two clamping blocks 121 are oppositely arranged, and the clamping blocks 121 are located at one end of the side plate 120 close to the bottom plate 110.

Referring to fig. 7, in some embodiments, the protective cover 600 is prism-shaped, two opposite clamping grooves 610 are formed in the protective cover 600, the clamping grooves 610 are matched with the clamping blocks 121, the clamping blocks 121 are clamped in the clamping grooves 610, so that the protective cover 600 is detachably connected to the bottom plate 110, the open end of the protective cover 600 and the bottom plate 110 are located in the same plane, and the protective cover 600 is made of ceramic material, so that the insulation performance of the surge protector is improved, and the dustproof performance of the surge protector is also improved.

Example two

Referring to fig. 1 to fig. 7, an electronic device according to an embodiment of the present disclosure includes the surge protector according to the first embodiment.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are exemplary and should not be construed as limiting the present application and that changes, modifications, substitutions and alterations in the above embodiments may be made by those of ordinary skill in the art within the scope of the present application.

Claims (10)

1. A surge protector, comprising: the device comprises a base, a first conducting rod and a piezoresistor;

the first conducting rod and the piezoresistor are arranged on the base at intervals;

the piezoresistor is provided with a first pin and a second pin at intervals;

the first pin is connected with a power supply end, and a second conducting rod is arranged on the first pin;

the second pin is a grounding pin;

one end of the first conducting rod is connected with the second conducting rod in a low-temperature soldering mode, the other end of the first conducting rod is connected with a power supply end, and the first conducting rod can be separated from the second conducting rod when the power supply end surges and moves towards the direction far away from the second conducting rod.

2. The surge protector of claim 1, further comprising: a partition plate;

the partition plate is arranged between the first conducting rod and the piezoresistor and connected with the base.

3. The surge protector of claim 2, further comprising: a spring plate;

the elastic sheet is arranged on the partition board and used for pushing the first conducting rod to move towards the direction far away from the second conducting rod.

4. The surge protector of claim 2, wherein the separator is an insulator.

5. The surge protector of claim 2, wherein the partition is provided with a first slot;

the second conducting rod is inserted into the first slot.

6. The surge protector of claim 5, further comprising: a first limit strip;

the first limiting strips are arranged on the base and connected with the partition plate, the first limiting strips are oppositely arranged, and the first limiting strips, the partition plate and the base form a first limiting groove for accommodating the first conducting rod.

7. The surge protector of claim 6, wherein the base is provided with a second slot;

the second slot is located at the bottom end of the first limiting groove, and one end, far away from the second conducting rod, of the first conducting rod is inserted into the second slot.

8. The surge protector of claim 2, further comprising: a protective cover;

the protective cover is sleeved on the partition plate.

9. The surge protector of claim 8, wherein the protective cover is removably attached to the base.

10. An electronic device, comprising a surge protector according to any of claims 1-9.

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