CN210349486U - Flame-retardant explosion-proof pressure-sensitive element - Google Patents
Flame-retardant explosion-proof pressure-sensitive element Download PDFInfo
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- CN210349486U CN210349486U CN201921221334.6U CN201921221334U CN210349486U CN 210349486 U CN210349486 U CN 210349486U CN 201921221334 U CN201921221334 U CN 201921221334U CN 210349486 U CN210349486 U CN 210349486U
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Abstract
The utility model relates to a flame-retardant explosion-proof pressure-sensitive element, which comprises an explosion-proof shell and a chip body arranged in the explosion-proof shell, wherein the chip body is connected with a lead pin; the chip body and the upper parts of the lead pins are wrapped by the insulating layer and are arranged in the inner cavity of the explosion-proof shell, and the lower parts of the lead pins extend to the outside of the explosion-proof shell; the middle part of the lead pin is provided with a bend, the lower end of the explosion-proof shell and the inner wall corresponding to the bending position are provided with grooves, and the bending clamp is clamped in the grooves to realize the upper limit and the lower limit of the chip body. The utility model omits the design of the insulating cover, and can effectively realize the explosion-proof effect through the fixing structure of the pin bending and the groove of the shell; and a new encapsulation structure is adopted, so that oxygen-free flame retardance inside and ceramic explosion prevention outside can be realized.
Description
Technical Field
The utility model relates to a pressure sensitive element, especially a fire-retardant explosion-proof pressure sensitive element.
Background
In actual use, the electronic components can be struck by lightning or subjected to electromagnetic induction of inductive elements, so that high voltage is formed, and phenomena such as combustion and explosion occur. In particular, the varistor is easily deteriorated and burns, causing the circuit board to be damaged.
In the prior art, a soft rubber sleeve is usually sleeved outside a component for flame retardance, so that the flame retardance effect is poor; later, some manufacturers add ceramic sleeves to perform explosion prevention and flame retardance, and most of explosion prevention structures place the encapsulated chip in a shell and then encapsulate the chip with an insulating cover; however, such a structure does not provide excellent flame retardant and explosion proof effects.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the flame-retardant and explosion-proof pressure-sensitive element has better explosion-proof and flame-retardant effects.
The utility model provides a technical scheme that its technical problem adopted is: a flame-retardant explosion-proof pressure-sensitive element comprises an explosion-proof shell and a chip body arranged in the explosion-proof shell, wherein the chip body is connected with a lead pin; the chip body and the upper parts of the lead pins are wrapped by the insulating layer and are arranged in the inner cavity of the explosion-proof shell, and the lower parts of the lead pins extend to the outside of the explosion-proof shell; the middle part of the lead pin is provided with a bend, the lower end of the explosion-proof shell and the inner wall corresponding to the bending position are provided with grooves, and the bending clamp is clamped in the grooves to realize the upper limit and the lower limit of the chip body.
Furthermore, explosion-proof shell be ceramic case, have better explosion-proof function.
Still further say, explosion-proof housing save the design of insulating cover, do not have upper cover or bottom, explosion-proof housing has open-ended hollow structure for the bottom, during explosion-proof housing was arranged in to the chip body, explosion-proof housing bottom was sealed through sealed glue.
Further say, in order to accomplish inside anaerobic fire-retardant, explosion-proof housing inner chamber in the clearance fill through sealed glue. The sealant is high-temperature-resistant insulating glue.
Further, the insulating layer of the utility model is an epoxy layer.
The utility model has the advantages that the defects in the background technology are overcome, the design of the insulating cover is omitted, and the explosion-proof effect can be effectively realized through the fixing structure of the pin bending and the groove of the shell; and a new encapsulation structure is adopted, so that oxygen-free flame retardance inside and ceramic explosion prevention outside can be realized.
Drawings
FIGS. 1-3 are schematic structural views of the present invention;
in the figure: 1. an explosion-proof housing; 2. a chip body; 3. a wire lead; 4. an insulating layer; 5. sealing glue; 6. bending; 7. and (4) a groove.
Detailed Description
The invention will now be described in further detail with reference to the drawings and preferred embodiments. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1, the flame-retardant explosion-proof pressure-sensitive element comprises an explosion-proof shell 1 and a chip body 2 arranged in the explosion-proof shell 1, wherein the chip body 2 is connected with a lead pin 3; explosion-proof housing 1 is ceramic case, has better explosion-proof function, and explosion-proof housing 1 has saved the design of insulating cover, does not have upper cover or bottom, and explosion-proof housing 1 has open-ended hollow structure for the bottom, and during explosion-proof housing 1 was arranged in to chip body 2, and sealed through sealed glue 55 in explosion-proof housing 1 bottom, sealed glue 5 was high temperature resistant insulating cement.
The chip body 2 and the upper parts of the lead pins 3 are wrapped by the insulating layer 4 and are arranged in the inner cavity of the explosion-proof shell 1, the insulating layer 4 is an epoxy resin layer, and the lower parts of the lead pins 3 extend to the outside of the explosion-proof shell 1; in order to achieve oxygen-free flame retardation inside, gaps in the inner cavity of the explosion-proof shell 1 are filled with sealant 5, and the sealant 5 is high-temperature-resistant insulating glue.
The middle part of the lead pin 3 is provided with a bend 6, the lower end of the explosion-proof shell 1 and the inner wall corresponding to the bending position are provided with a groove 7, and the bend 6 is clamped in the groove 7 to realize the upper limit and the lower limit of the chip body 2.
As shown in fig. 2 and 3, the groove 7 may be formed by partially cutting the inner wall of the lower end of the explosion-proof housing 1, and the shape of the bend 6 may be a sharp corner or an arc.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (6)
1. A flame-retardant explosion-proof pressure-sensitive element comprises an explosion-proof shell and a chip body arranged in the explosion-proof shell, wherein the chip body is connected with a lead pin; the method is characterized in that: the chip body and the upper parts of the lead pins are wrapped by the insulating layer and are arranged in the inner cavity of the explosion-proof shell, and the lower parts of the lead pins extend to the outside of the explosion-proof shell; the middle part of the lead pin is provided with a bend, the lower end of the explosion-proof shell and the inner wall corresponding to the bending position are provided with grooves, and the bending clamp is clamped in the grooves to realize the upper limit and the lower limit of the chip body.
2. A flame retardant and explosion proof pressure sensitive element according to claim 1 wherein: the explosion-proof shell is a ceramic shell.
3. A flame retardant and explosion proof pressure sensitive element according to claim 2 wherein: the chip body is arranged in the explosion-proof shell, and the bottom of the explosion-proof shell is sealed by sealant.
4. A flame retardant and explosion proof pressure sensitive element according to claim 2 wherein: and gaps in the inner cavity of the explosion-proof shell are filled by sealant.
5. A flame retardant and explosion proof pressure sensitive element according to claim 3 or 4 wherein: the sealant is high-temperature-resistant insulating glue.
6. A flame retardant and explosion proof pressure sensitive element according to claim 1 wherein: the insulating layer is an epoxy resin layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921221334.6U CN210349486U (en) | 2019-07-30 | 2019-07-30 | Flame-retardant explosion-proof pressure-sensitive element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921221334.6U CN210349486U (en) | 2019-07-30 | 2019-07-30 | Flame-retardant explosion-proof pressure-sensitive element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210349486U true CN210349486U (en) | 2020-04-17 |
Family
ID=70216678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921221334.6U Active CN210349486U (en) | 2019-07-30 | 2019-07-30 | Flame-retardant explosion-proof pressure-sensitive element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210349486U (en) |
-
2019
- 2019-07-30 CN CN201921221334.6U patent/CN210349486U/en active Active
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