CN-224202577-U - Temperature sensor inlaid with injection molding shell

CN224202577UCN 224202577 UCN224202577 UCN 224202577UCN-224202577-U

Abstract

The utility model discloses a temperature sensor inlaid with an injection molding shell, which comprises a metal shell, a temperature sensing resistor component, a packaging structure and an injection molding shell, wherein the head of the temperature sensing resistor component is packaged in the packaging structure, the packaging structure is at least partially packaged in the metal shell, the injection molding shell is injection molded on the metal shell, a first engagement part is arranged on the outer wall of the metal shell, and the injection molding shell is in engagement connection with the first engagement part. According to the utility model, the injection molding shell is obtained by injection molding on the metal shell, the first engagement part is arranged on the metal shell, the injection molding shell is in engagement connection with the first engagement part, the matching degree of the injection molding shell and the metal shell is good, the binding force is strong, the binding property of the injection molding shell and the metal shell is enhanced, and the anti-drop effect is achieved.

Inventors

HU XUEXUE
MA WEIWEI
LUO MAN
ZHENG XIANGYANG
ZHANG QINAN

Assignees

孝感华工高理电子有限公司

Dates

Publication Date: 20260505
Application Date: 20250610

Claims (9)

1. The utility model provides a inlay temperature sensor of shell of moulding plastics, includes metal casing, temperature-sensing resistance subassembly and packaging structure, temperature-sensing resistance subassembly's head encapsulation in the packaging structure, packaging structure at least part encapsulation in the metal casing, its characterized in that still includes the shell of moulding plastics, the shell of moulding plastics mould plastics in on the metal casing, be equipped with first interlock portion on the outer wall of metal casing, the shell of moulding plastics with first interlock portion interlock is connected.
2. The temperature sensor of a mosaic injection molded housing according to claim 1, wherein the first snap-in portion comprises a plurality of first snap-in grooves and/or a plurality of first snap-in protrusions arranged in sequence along an axial direction of the metal housing.
3. The temperature sensor of the insert injection molding shell according to claim 1, wherein a second engaging portion is provided on an inner wall of the metal housing, and the package structure is engaged with the second engaging portion.
4. A temperature sensor of a mosaic injection molded housing according to claim 3, wherein the second snap-in portion comprises a plurality of second snap-in grooves and/or a plurality of second snap-in protrusions arranged in sequence along the axial direction of the metal housing.
5. The temperature sensor of a mosaic injection molded case according to claim 1, wherein a side of the metal housing facing the encapsulation structure is provided with a tapered groove, and an end of the encapsulation structure facing the metal housing is formed with a tapered portion, and the tapered portion is embedded in the tapered groove.
6. The temperature sensor of claim 1, wherein the metal shell comprises a base plate and a sleeve, the base plate is arranged at one end of the sleeve, an extension part is formed by extending the periphery of the base plate out of the sleeve, the packaging structure is at least partially packaged in the sleeve, the injection molding shell is sleeved on the sleeve and is abutted to the extension part, and the first engagement part is arranged on the outer wall of the sleeve.
7. The insert molded case temperature sensor of claim 1, wherein the encapsulation structure comprises a first encapsulation layer and a second encapsulation layer, the head of the temperature sensitive resistor assembly being encapsulated within the first encapsulation layer, the first encapsulation layer being encapsulated within the second encapsulation layer, the second encapsulation layer being at least partially encapsulated within the metal housing.
8. The insert molded housing temperature sensor of claim 7, wherein the first encapsulation layer has a hardness greater than a hardness of the second encapsulation layer.
9. The temperature sensor of claim 1, wherein the length of the injection molded housing is greater than the length of the metal shell, and the package structure is housed within the injection molded housing.

Description

Temperature sensor inlaid with injection molding shell Technical Field The utility model relates to the technical field of temperature sensors, in particular to a temperature sensor inlaid with an injection molding shell. Background Temperature data are key parameters in the fields of industrial production, medical equipment, environmental monitoring and the like, and directly influence the running stability, the product quality and the safety of equipment, and a temperature sensor is an important equipment for monitoring the temperature. The temperature sensor provides accurate regulation and control basis for the system through real-time monitoring and feedback data. The thermistor of the existing temperature sensor is packaged in a plastic shell through a packaging material, one end of the plastic shell is plugged through a metal shell, the plastic shell is sleeved on the metal shell, and because of different thermal expansion coefficients of metal and plastic, the risk that the plastic shell is separated from the metal shell and the potential safety hazard exist in the long-term use process. As disclosed in patent CN 214104173U, a temperature sensor at the bottom of a cooker and an electric cooker are provided, a plastic shell is sleeved on a metal shell, the risk of the plastic shell falling out exists, the use of the temperature sensor is affected, and potential safety hazards exist. Disclosure of utility model In order to solve the problems, the utility model provides a temperature sensor inlaid with an injection molding shell, which comprises a metal shell, a temperature sensing resistor component and a packaging structure, wherein the head of the temperature sensing resistor component is packaged in the packaging structure, the packaging structure is at least partially packaged in the metal shell, the temperature sensor further comprises the injection molding shell, the injection molding shell is injection molded on the metal shell, a first engaging part is arranged on the outer wall of the metal shell, and the injection molding shell is in engaged connection with the first engaging part. Further, the first engaging portion comprises a plurality of first engaging grooves and/or a plurality of first engaging protrusions which are sequentially distributed along the axial direction of the metal shell. Further, a second engaging portion is arranged on the inner wall of the metal shell, and the packaging structure is in engaging connection with the second engaging portion. Further, the second engaging portion comprises a plurality of second engaging grooves and/or a plurality of second engaging protrusions which are sequentially distributed along the axial direction of the metal shell. Further, a conical groove is formed in one side, facing the packaging structure, of the metal shell, a conical portion is formed in one end, facing the metal shell, of the packaging structure, and the conical portion is embedded into the conical groove. Further, the metal shell comprises a base plate and a sleeve, the base plate is arranged at one end of the sleeve, the periphery of the base plate extends out of the sleeve to form an extension portion, the packaging structure is at least partially packaged in the sleeve, the injection molding shell is sleeved on the sleeve and is abutted to the extension portion, and the first engagement portion is arranged on the outer wall of the sleeve. Further, the packaging structure comprises a first packaging layer and a second packaging layer, the head of the temperature-sensing resistor component is packaged in the first packaging layer, the first packaging layer is packaged in the second packaging layer, and the second packaging layer is at least partially packaged in the metal shell. Further, the hardness of the first encapsulation layer is greater than the hardness of the second encapsulation layer. Further, the length of the injection molding shell is larger than that of the metal shell, and the packaging structure is accommodated in the injection molding shell. Compared with the prior art, the utility model has the following beneficial effects due to the adoption of the technical scheme: 1) According to the temperature sensor provided by the utility model, the injection molding shell is obtained by injection molding on the metal shell, the first engagement part is arranged on the metal shell, the injection molding shell is in engagement connection with the first engagement part, the matching degree of the injection molding shell and the metal shell is good, the binding force is strong, the binding property of the injection molding shell and the metal shell is enhanced, and the anti-drop effect is achieved. 2) According to the temperature sensor provided by the utility model, the second engaging part is arranged on the inner wall of the metal shell, and the packaging structure is in engaged connection with the metal shell through the second engaging part, so that the connecti