CN215677336U - Single-ended NTC encapsulation temperature sensor that moulds plastics suitable for bullet head shell - Google Patents
Single-ended NTC encapsulation temperature sensor that moulds plastics suitable for bullet head shell Download PDFInfo
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- CN215677336U CN215677336U CN202122253197.8U CN202122253197U CN215677336U CN 215677336 U CN215677336 U CN 215677336U CN 202122253197 U CN202122253197 U CN 202122253197U CN 215677336 U CN215677336 U CN 215677336U
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Abstract
The utility model discloses a single-ended NTC injection molding packaging temperature sensor suitable for a bullet shell, which comprises a sensing end, wherein the sensing end comprises a sensing element and a wire electrically connected with the sensing element, and a conducting structure between the sensing element and the wire is formed into an insulating sleeve through injection molding. The single-ended NTC injection molding packaging temperature sensor suitable for the bullet shell optimizes the product structure, simplifies the production process and improves the product performance.
Description
Technical Field
The utility model relates to the technical field of temperature sensing, in particular to a single-ended NTC injection molding packaging temperature sensor suitable for a bullet shell.
Background
In the prior art, a bullet type temperature sensor is generally coated with epoxy resin or coated with epoxy resin, then a welding point is added with sleeve insulation, and then a metal shell is placed in the bullet type temperature sensor, and then the bullet type temperature sensor is encapsulated and fixed by epoxy resin. Referring to fig. 1 and 2, since the epoxy resin 100 is in a liquid state, the coating process is not easy to control, and the coating thickness is inspected by visual inspection, which is likely to cause inconsistent or substandard insulation thickness, resulting in poor insulation and voltage resistance; and when the sleeve insulation is added and the encapsulation is carried out again, the product is easy to have extremely many bubbles, and in addition, epoxy resin possibly exists on the glass shell of the sensing element and is not wiped cleanly, so that the thermal conductivity of the epoxy resin is small, and the improvement of the response time of the product is not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a single-ended NTC injection molding packaging temperature sensor suitable for a bullet shell, which optimizes the product structure, simplifies the production process and improves the product performance.
The utility model discloses a single-ended NTC injection molding packaging temperature sensor suitable for a bullet shell, which adopts the technical scheme that:
the utility model provides a single-ended NTC encapsulation temperature sensor of moulding plastics suitable for bullet shell, includes the sensing end, the sensing end includes sensing element to and the wire rod of being connected with sensing element electricity, conduction structure between sensing element and the wire rod forms insulating cover through moulding plastics.
Preferably, the sensing element is an NTC resistor.
Preferably, the insulating sleeve is oval.
Preferably, an annular groove is formed in the outer side of the insulating sleeve.
Preferably, the top of the insulating sleeve is provided with a first insulating part and a second insulating part which are arranged at intervals, the first insulating part and the second insulating part are respectively provided with a wire, and the sensing element is arranged on the top between the first insulating part and the second insulating part.
The single-ended NTC injection molding packaging temperature sensor applicable to the bullet shell disclosed by the utility model has the beneficial effects that: and after the sensing element is electrically connected with the wire, the insulating sleeve is directly obtained by injection molding. The conducting structure of the sensing element and the wire is protected in an injection molding insulation mode, the thickness of the insulation sleeve can be kept consistent and controllable through a reasonable injection molding structure, the insulation and voltage resistance performance of a product is improved, the problem of response time is solved, the product structure is optimized, the production process is simplified, and the performance of the product is improved. And after the sensing element is reasonably protected by injection molding and insulation, the size of the sensing element can be controlled, and only the conducting structure of the sensing element and the wire is subjected to injection molding, so that the glass shell of the sensing element can be reserved and exposed, the subsequent process is simple, the production efficiency is high, and the performance of the product is well improved. Therefore, the insulating and voltage-resisting performance is excellent, consistent and reliable, the thermal response time of the product is fast, and the product is kept stable.
Drawings
FIG. 1 is a schematic view of a prior art epoxy over-thinned structure.
Fig. 2 is a schematic view of a prior art epoxy over-thick coating.
Fig. 3 is a schematic structural diagram of a single-ended NTC injection-molded temperature sensor suitable for a bullet housing according to the present invention.
Fig. 4 is a cross-sectional view of a single-ended NTC injection molded encapsulated temperature sensor suitable for use with a bullet housing in accordance with the present invention.
Detailed Description
The utility model will be further elucidated and described with reference to the embodiments and drawings of the specification:
referring to fig. 3 and 4, the single-ended NTC injection-molded temperature sensor suitable for a bullet shell comprises a sensing end 10, wherein the sensing end 10 comprises a sensing element 12, and a wire 14 electrically connected to the sensing element 12, and a conductive structure between the sensing element 12 and the wire 14 is formed by injection molding to form an insulating sleeve 20.
After the sensing element 12 is electrically connected to the wire 14, the insulating sheath 20 is directly obtained by injection molding. The conducting structure of the sensing element 12 and the wire 14 adopts injection insulation protection, and through a reasonable injection structure, the thickness of the insulation sleeve 20 can be kept consistent and controllable, the insulation and voltage resistance performance of a product is improved, the response time problem is solved, the product structure is optimized, the production process is simplified, and the performance of the product is improved. And after the sensing element 12 is reasonably protected by injection molding and insulation, the size of the sensing element is controllable, and only the conducting structure of the sensing element 12 and the wire 14 is subjected to injection molding, so that the glass shell of the sensing element 12 can be reserved and exposed, the subsequent process is simple, the production efficiency is high, and the performance of the product is also well improved. Therefore, the insulating and voltage-resisting performance is excellent, consistent and reliable, the thermal response time of the product is fast, and the product is kept stable.
In the scheme, the size of the insulating sleeve 20 formed by injection molding is controllable and controllable, the installation requirement can be met, the insulating and voltage-resisting purposes can also be met, the voltage-resisting value can reach AC5000V or above, and meanwhile, the pins of the sensing element 12 basically have no contact disconnection.
In this embodiment, the sensing element 12 is an NTC resistor.
In this embodiment, the insulating sheath 20 is oval. Specifically, since the metal shell is required to be placed later, and the metal shell is usually circular, the elliptical insulating sleeve 20 and the circular metal shell have enough space left for filling the subsequent potting adhesive after being matched. Further, an annular groove 22 is formed on the outer side of the insulating sleeve 20. Specifically, the annular groove 22 is opened up to two, and the annular groove 22 is used for the inflow of the potting adhesive, so that the insulating sleeve 20 and the potting adhesive are fixed together, and are firmer.
In this embodiment, the top of the insulating sleeve 20 is provided with a first insulating portion 24 and a second insulating portion 26 which are arranged at intervals, the first insulating portion 24 and the second insulating portion 26 are respectively provided with the wires 14, and the sensing element 12 is arranged on the top between the first insulating portion 24 and the second insulating portion 26. Specifically, only after the conducting structure of the NTC resistor and the wire 14 is subjected to injection molding, the glass shell of the NTC resistor can be reserved and exposed, and the glass shell of the NTC resistor is the place most sensitive to temperature sensing, so that the exposed glass shell can effectively ensure that the reaction time is short.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. The single-ended NTC injection molding packaging temperature sensor suitable for the bullet shell is characterized by comprising a sensing end, wherein the sensing end comprises a sensing element and a wire electrically connected with the sensing element, and a conduction structure between the sensing element and the wire is formed into an insulating sleeve through injection molding.
2. The single-ended NTC injection molded encapsulated temperature sensor adapted for a bullet housing of claim 1, wherein said sensing element is an NTC resistor.
3. The single-ended NTC injection molded encapsulated temperature sensor adapted for a bullet housing of claim 1, wherein said insulating sleeve is oval in shape.
4. The single-ended NTC injection-molded encapsulated temperature sensor adapted for a bullet housing of claim 3, wherein an annular groove is formed at an outer side of said insulating sleeve.
5. The single-ended NTC injection-molded encapsulated temperature sensor adapted for a bullet housing of claim 1, wherein the top of the insulation sleeve is provided with a first insulation portion and a second insulation portion which are spaced apart from each other, the first insulation portion and the second insulation portion are respectively provided with wires therein, and the sensing element is provided at the top between the first insulation portion and the second insulation portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122253197.8U CN215677336U (en) | 2021-09-17 | 2021-09-17 | Single-ended NTC encapsulation temperature sensor that moulds plastics suitable for bullet head shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122253197.8U CN215677336U (en) | 2021-09-17 | 2021-09-17 | Single-ended NTC encapsulation temperature sensor that moulds plastics suitable for bullet head shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215677336U true CN215677336U (en) | 2022-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122253197.8U Active CN215677336U (en) | 2021-09-17 | 2021-09-17 | Single-ended NTC encapsulation temperature sensor that moulds plastics suitable for bullet head shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215677336U (en) |
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2021
- 2021-09-17 CN CN202122253197.8U patent/CN215677336U/en active Active
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