CN212363477U

CN212363477U - NTC temperature sensor packaging structure

Info

Publication number: CN212363477U
Application number: CN202020822040.5U
Authority: CN
Inventors: 陈智华
Original assignee: Chuandong Magnetic Electronic Co Ltd
Current assignee: Chuandong Magnetic Electronic Co Ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-01-15
Anticipated expiration: 2030-05-15

Abstract

The utility model discloses a NTC temperature sensor packaging structure, including thermistor, thermistor is connected with two or is greater than two pins, still includes the fine pipe of silica gel glass and metal casing, metal casing's a side has been seted up and has been fed through the installing port in the metal casing, thermistor set up in the metal casing, the pin stretches out from the installing port, the fine pipe of silica gel glass is located between metal casing and the thermistor, each the cover has heat-resisting sleeve pipe, each on the pin heat-resisting sleeve pipe's outside cover has heat-resisting insulation support, the metal casing inner wall is equipped with the arch, protruding with the fine pipe interference fit of silica gel glass. The utility model provides a simple NTC temperature sensor packaging structure of installation.

Description

NTC temperature sensor packaging structure

Technical Field

The utility model relates to a sensor technical field, especially a NTC temperature sensor packaging structure.

Background

NTC temperature sensors are generally capable of withstanding relatively high temperatures, and their temperature sensing portions are capable of withstanding temperatures of 260 degrees celsius, and thus are generally useful in ovens, air fryers, and the like. In order to be usable with this temperature regulation, the NTC temperature sensor may be encapsulated with an inorganic epoxy, which withstands temperatures up to 400 degrees celsius. However, the flowability of the inorganic epoxy resin is poor, and it is difficult to realize automatic packaging, and manual packaging is required, but the manual packaging has low work efficiency and high labor cost.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the NTC temperature sensor packaging structure is convenient to mount.

The utility model provides a solution of its technical problem is:

the utility model provides a NTC temperature sensor packaging structure, includes thermistor, thermistor is connected with two or be greater than two pins, still includes the fine pipe of silica gel glass and metal casing, the installing port that communicates in the metal casing is seted up to metal casing's a side, thermistor set up in the metal casing, the pin stretches out from the installing port, the fine pipe of silica gel glass is located between metal casing and the thermistor, each the cover has heat-resisting sleeve pipe, each on the pin heat-resisting sleeve pipe's outside cover has heat-resisting insulation support, the metal casing inner wall is equipped with the arch, protruding with the fine pipe interference fit of silica gel glass.

As a further improvement of the above technical solution, the outer wall of the metal shell is provided with a groove, so that the inner wall of the metal shell forms the protrusion.

As a further improvement of the technical scheme, the end part, away from the thermistor, of each pin is called a connecting part, and the connecting part is riveted with a lead through a copper belt.

As a further improvement of the above technical solution, a second double-wall heat-shrinkable tube is disposed outside the connecting portion, and the second double-wall heat-shrinkable tube surrounds the connecting portion and the copper strip.

As a further improvement of the above technical solution, a first double-walled heat shrinkable tube is sleeved on the metal shell, the first double-walled heat shrinkable tube is disposed outside the installation opening, and the first double-walled heat shrinkable tube extends to surround the outside of the second double-walled heat shrinkable tube.

As a further improvement of the above technical solution, the heat-resistant sleeve is a polyimide sleeve.

As a further improvement of the technical scheme, the heat-resistant insulating sleeve is a glass fiber sleeve.

As a further improvement of the above technical solution, the heat-resistant sleeve and the heat-resistant insulating sleeve are respectively disposed in the metal housing, and the heat-resistant sleeve and the heat-resistant insulating sleeve respectively extend to the mounting opening.

As a further improvement of the technical scheme, the lead comprises a lead main body and a fluoroplastic layer surrounding the outer wall of the lead main body, and the pin is riveted with the lead main body through a copper strip.

The utility model has the advantages that: the heat-resistant sleeve wraps the pin to achieve a good high-temperature-resistant effect, so that the heat is prevented from being transferred to the thermistor by the external temperature directly passing through the pin, and the heat-resistant insulating sleeve surrounds the heat-resistant sleeve, so that on one hand, the heat-resistant performance is further improved, and on the other hand, the possibility of deformation of the pin can be effectively reduced through the heat-resistant sleeve and the heat-resistant insulating sleeve; the silica gel glass fiber tube is arranged between the thermistor and the metal shell, the thermistor protrudes from one end of the silica gel glass fiber tube and is arranged at the end part far away from the mounting opening in the metal shell, heat transfer is realized through the metal shell, heat is conducted to the thermistor, good heat conduction is realized, the silica gel glass fiber tube is tightly pressed through the bulge to realize interference fit, and therefore fixed connection between the silica gel glass fiber tube and the metal shell is realized; adopt inorganic epoxy to encapsulate thermistor relative ratio with the tradition, the utility model discloses an installation effectiveness of structure is higher, can adopt automation equipment such as manipulator to assemble in the in-service use.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

Fig. 1 is a schematic sectional structure of the present invention; wherein the second double wall heat shrinkable tube and the first double wall heat shrinkable tube are in an uncontracted state.

In the drawings: 1-thermistor, 2-pin, 3-bump, 4-heat-resistant insulating sleeve, 5-metal shell, 6-silica gel glass fiber tube, 7-heat-resistant sleeve, 8-groove, 9-copper strip, 10-second double-wall heat-shrinkable tube, 11-first double-wall heat-shrinkable tube, 12-mounting opening and 13-fluoroplastic layer.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.

Referring to fig. 1, an NTC temperature sensor packaging structure, including thermistor 1, thermistor 1 is connected with two or is greater than two pin 2, still includes the fine pipe 6 of silica gel glass and metal casing 5, a side of metal casing 5 is seted up and is communicated the installing port 12 in the metal casing 5, thermistor 1 set up in the metal casing 5, pin 2 stretches out from installing port 12, the fine pipe 6 of silica gel glass is located between metal casing 5 and thermistor 1, each the cover has heat-resisting sleeve pipe 7, each on pin 2 the outside cover of heat-resisting sleeve pipe 7 has heat-resisting insulation support 4, the 5 inner walls of metal casing are equipped with protruding 3, protruding 3 with the fine pipe 6 interference fit of silica gel glass.

In this embodiment, the heat-resistant sleeve 7 wraps the pin 2 to achieve a better high-temperature-resistant effect, so that the external temperature is prevented from directly transmitting heat to the thermistor 1 through the pin 2, and the heat-resistant insulating sleeve 4 surrounds the heat-resistant sleeve 7, so that on one hand, the heat-resistant performance is further improved, and on the other hand, the possibility of deformation of the pin 2 can be effectively reduced through the heat-resistant sleeve 7 and the heat-resistant insulating sleeve 4; the silica gel glass fiber tube 6 is arranged between the thermistor 1 and the metal shell 5, the thermistor 1 protrudes from one end of the silica gel glass fiber tube 6 and is arranged at the end part, far away from the mounting opening 12, in the metal shell 5, heat transfer is realized through the metal shell 5, heat is conducted to the thermistor 1, so that good heat conduction is realized, the silica gel glass fiber tube 6 is tightly pressed through the bulge 3 to realize interference fit, and therefore the fixed connection between the silica gel glass fiber tube 6 and the metal shell 5 is realized; adopt inorganic epoxy to encapsulate 1 relative ratio of thermistor with the tradition, the utility model discloses an installation effectiveness of structure is higher, can adopt automation equipment such as manipulator to assemble in the in-service use.

In the art, the silicone fiberglass tube 6 may also be referred to as a silicone rubber fiberglass sleeve or a high temperature fire sleeve or a fire sleeve.

The metal housing 5 is a metal-supported housing, and metal generally has good heat-conducting properties.

Preferably, the thermistor 1 is connected with two pins 2, and the two pins 2 are respectively electrically connected with the thermistor 1 and form a series connection.

In some embodiments, the outer wall of the metal shell 5 is provided with a groove 8, such that the inner wall of the metal shell 5 forms the protrusion 3. This simple structure, setting are convenient, and in the in-service use, can adopt external force to push metal casing 5's outer wall and make metal casing 5 produce deformation to metal casing 5's outer wall forms this recess 8, and metal casing 5's inner wall corresponds recess 8 and forms protruding 3.

In some embodiments, the end of each of the pins 2 remote from the thermistor 1 is referred to as a connection, which is riveted with a wire by means of copper tape 9. This simple structure, setting convenience, when in actual use, technical personnel in this field can bend this connecting portion and make pin 2 form a U type, and the tip of wire bends equally and forms a U type, and the U type on the pin 2 and the mutual lock joint of the U type of wire then rivet at the position that surrounds this lock joint through copper strips 9. As an alternative connection, the person skilled in the art can rivet the connection and the conductor directly with the copper strip 9 directly around it.

In some embodiments, a second double-walled heat shrink tube 10 is provided outside the connection, the second double-walled heat shrink tube 10 surrounding the connection and the copper tape 9. This simple structure, setting are convenient, through the setting of second double-walled pyrocondensation pipe 10, after second double-walled pyrocondensation pipe 10 contracts, can protect connecting portion and copper strips 9 junction between them better.

A double-wall heat-shrinkable tube is a type of heat-shrinkable tube, and is formed by compounding and processing an outer layer of high-quality and soft cross-linked polyolefin material and an inner layer of hot melt adhesive. The outer layer material has the advantages of insulation, corrosion resistance, wear resistance and the like, and the inner layer has the advantages of low melting point, water resistance, sealing, high adhesion and the like.

In the actual use process, the inner layer hot melt adhesive of the second double-wall heat-shrinkable tube 10 can be tightly connected with the copper strip 9 and the connecting part after the second double-wall heat-shrinkable tube 10 is shrunk, so that the tensile strength between the copper strip 9 and the connecting part is effectively improved.

In some embodiments, the metal shell 5 is sleeved with a first double-walled heat-shrinkable tube 11, the first double-walled heat-shrinkable tube 11 is disposed outside the mounting port 12, and the first double-walled heat-shrinkable tube 11 extends to surround the outside of the second double-walled heat-shrinkable tube 10. This simple structure, it is convenient to set up, first double-walled heat-shrinkable tube 11 is the outer wall of its hot melt adhesive inlayer zonulae occludens metal casing 5 after the shrink, first double-walled heat-shrinkable tube 11 extends to the second double-walled heat-shrinkable tube 10 outside, surround the outside of installing port 12 effectively, improve the tensile strength of installing port 12 position department, in addition, first double-walled heat-shrinkable tube 11 surrounds the outer wall of laminating second double-walled heat-shrinkable tube 10, further improve the tensile strength between wire and the pin 2.

In some embodiments, the heat resistant sleeve 7 is a polyimide sleeve. The structure is simple and convenient to set. Polyimide is one of the organic polymer materials with the best combination property. The high-temperature-resistant ceramic material has high temperature resistance of more than 400 ℃, long-term use temperature range of-200 ℃ to 300 ℃, no obvious melting point in part, high insulating property, dielectric constant of 4.0 at 103 Hz, dielectric loss of only 0.004 to 0.007, and excellent performance.

In some embodiments, the heat resistant insulating sleeve 4 is a fiberglass sleeve. The structure is simple and the arrangement is convenient. In the art, fiberglass sleeves are also known as: glass fiber sleeve, high temperature sleeve, alkali-free glass fiber sleeve, B-type glass fiber sleeve, high temperature-resistant sleeve and the like. The fireproof heat-insulating fireproof cable has excellent performance, and has excellent characteristics of fire prevention, heat insulation, flame retardance and the like.

In some embodiments, the heat-resistant bushing 7 and the heat-resistant insulating bushing 4 are respectively disposed in the metal housing 5, and the heat-resistant bushing 7 and the heat-resistant insulating bushing 4 respectively extend to the mounting opening 12. The structure is simple and the arrangement is convenient. During the use, this metal casing 5 is used for placing the place that needs retrieval environment temperature, therefore, and metal casing 5 has comparatively good heat conductivility, through this heat-resisting sleeve 7, heat-resisting insulating sleeve 4's setting, can effectually protect pin 2.

In some embodiments, the lead comprises a lead body, a fluoroplastic layer 13 surrounding the outer wall of the lead body, and the pin 2 is riveted to the lead body by a copper tape 9. This simple structure, setting are convenient, and in the in-service use, this wire is the fluoroplastics electric wire. It has excellent corrosion resistance, and is oil, strong acid, strong alkali and strong oxidant resistant. Optionally, in this embodiment, the main body of the wire may be a wire made of a wire material, such as a copper wire or a silver wire.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims

1. The utility model provides a NTC temperature sensor packaging structure, includes thermistor (1), thermistor (1) is connected with two or more than two pin (2), its characterized in that: still include the fine pipe of silica gel glass (6) and metal casing (5), a side of metal casing (5) is seted up and is communicated installing port (12) in metal casing (5), thermistor (1) set up in metal casing (5), pin (2) are stretched out from installing port (12), the fine pipe of silica gel glass (6) are located between metal casing (5) and thermistor (1), each the cover has heat-resisting sleeve pipe (7), each on pin (2) the outside cover of heat-resisting sleeve pipe (7) has heat-resisting insulation support (4), metal casing (5) inner wall is equipped with arch (3), arch (3) with the fine pipe of silica gel glass (6) interference fit.

2. The NTC temperature sensor package structure of claim 1, wherein: the outer wall of the metal shell (5) is provided with a groove (8), so that the inner wall of the metal shell (5) forms the protrusion (3).

3. The NTC temperature sensor package structure of claim 1, wherein: each pin (2) is far away from the end part of the thermistor (1) and is called as a connecting part, and the connecting part is riveted with a lead through a copper strip (9).

4. The NTC temperature sensor package structure of claim 3, wherein: and a second double-wall heat-shrinkable tube (10) is arranged on the outer side of the connecting part, and the connecting part and the copper strip (9) are surrounded by the second double-wall heat-shrinkable tube (10).

5. The NTC temperature sensor package structure of claim 4, wherein: the metal shell (5) is sleeved with a first double-wall heat-shrinkable tube (11), the first double-wall heat-shrinkable tube (11) is arranged on the outer side of the mounting port (12), and the first double-wall heat-shrinkable tube (11) extends to the outer side surrounding the second double-wall heat-shrinkable tube (10).

6. The NTC temperature sensor package structure of claim 1, wherein: the heat-resistant sleeve (7) is a polyimide sleeve.

7. The NTC temperature sensor package structure of claim 1, wherein: the heat-resistant insulating sleeve (4) is a glass fiber sleeve.

8. The NTC temperature sensor package structure of claim 1, wherein: the heat-resistant sleeve (7) and the heat-resistant insulating sleeve (4) are respectively arranged in the metal shell (5), and the heat-resistant sleeve (7) and the heat-resistant insulating sleeve (4) respectively extend to the mounting opening (12).

9. The NTC temperature sensor package structure of claim 3, wherein: the lead comprises a lead body and a fluoroplastic layer (13) surrounding the outer wall of the lead body, and the pin (2) is riveted with the lead body through a copper strip (9).