CN204855010U

CN204855010U - NTC temperature sensor

Info

Publication number: CN204855010U
Application number: CN201520527446.XU
Authority: CN
Inventors: 孔浩
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-07-20
Filing date: 2015-07-20
Publication date: 2015-12-09
Anticipated expiration: 2025-07-20

Abstract

The utility model relates to a NTC temperature sensor, this sensor mainly includes tensioning member, thermistor, wire, epoxy, for solving waterproof problem the utility model discloses still include following structure: PVC line skin, its suit is on thermistor's pin, first pyrocondensation pipe, its shrink solidification is on PVC line skin, the transparent sleeve pipe of double -walled thermal contraction, its suit is on first pyrocondensation pipe of part and wire to extend to outside the tensioning member along with the wire, second pyrocondensation pipe, its both ends cup joint respectively at the tensioning member open end and on stretching out the transparent sleeve pipe of double -walled thermal contraction of tensioning member. First, second pyrocondensation pipe, the transparent sleeve pipe of double -walled thermal contraction with the epoxy cooperation, have formed a plurality of seal structure through shrink solidification respectively, have reached high water -proof effects, even also can guarantee the sensitivity of sensor under high -humidity environment, can go on just measuring accurately fast.

Description

A kind of NTC temperature sensor

Technical field

The utility model relates to a kind of temperature sensor, is specifically related to a kind of NTC temperature sensor.

Background technology

Current NTC temperature sensor is because thermistor is encapsulated in tensioning member, but because of encapsulating structure problem, water proofing property is poor, and be vulnerable to external environment such as corrosive gas and affect, affect thermistor work, even damage temperature sensitive resistance, insufficient sensitivity when causing measuring tempeature, measuring accuracy is poor, even cannot use at some high humidity environments.

Utility model content

The utility model provide a kind of can the temperature sensor of waterproof, can use under the environment of high humility, and sensitivity is higher, measures rapidly accurately.

The utility model provides following technical scheme: a kind of NTC temperature sensor, mainly comprises tensioning member, thermistor, wire, epoxy resin; Described tensioning member is that one end is closed, the tubular shell of one end open; Described thermistor is placed in tensioning member; Described wire one end connects thermistor, and the other end extends tensioning member; Described epoxy resin is placed in tensioning member, and thermistor and part wire are solidificated in tensioning member; Described NTC temperature sensor also comprises following structure: PVC line skin, and it is sleeved on the pin of thermistor; First heat-shrink tube, its contraction is solidificated on PVC line skin; Double wall heat shrinks transparent casing, and it is set on part first heat-shrink tube and wire, and extends to outside tensioning member with wire; Second heat-shrink tube, its two ends are socketed in tensioning member openend respectively and shrink on transparent casing with the double wall heat stretching out tensioning member, shrink solidification.

In such scheme, heat-shrink tube, double wall heat is utilized to shrink the heat shrinkability characteristic of transparent casing, by coordinating with epoxy resin, be provided with multiple hermetically-sealed construction, reach high waterproof effect, even if the sensitivity of sensor also can be ensured under high humidity environment, can measure quickly and accurately.

Accompanying drawing explanation

Fig. 1 is the cut-open view of NTC temperature sensor

Embodiment

Below in conjunction with accompanying drawing, further detail explanation is made to the utility model.

As shown in Figure 1, this NTC temperature sensor mainly comprises tensioning member 1, thermistor 2, wire 4, epoxy resin 5.Tensioning member 1 is for closing one end, and the tubular shell of one end open, its blind end is temperature measuring head, is provided with thermistor 2 in this temperature measuring head, and thermistor 2 is close to inside temperature measuring head.Wire 4 one end connects the pin 21 of thermistor 2, and the other end extends tensioning member 1.The pin 21 of thermistor 2 puts PVC line skin 7, then welds upper conductor 4, puts the first heat-shrink tube 31, carries out contraction solidification, then puts double wall heat and shrinks transparent casing 6; Double wall heat shrinks transparent casing 6 one end and is set on part first heat-shrink tube 31, and the other end is sleeved on wire 4, and extends to outside tensioning member 1 with wire 4, then shrinks solidification.After said structure completes, epoxy resin 5 embedding in tensioning member 1, then tensioning member 1 openend cover on the second heat-shrink tube 32; Second heat-shrink tube 32 two ends are socketed in tensioning member 1 openend respectively and shrink on transparent casing 6 with the double wall heat stretching out tensioning member 1, and then the second heat-shrink tube 32 shrinks solidification, are close to tensioning member 1 and double wall heat and shrink transparent casing 6 and reach sealing effectiveness.

First heat-shrink tube 31, second heat-shrink tube 32 and double wall heat shrink transparent casing 6 and solidify through shrinking respectively, and by with being sealed and matched of epoxy resin 5, define multiple hermetically-sealed construction, can effectively prevent water from immersing.

By reference to the accompanying drawings detail explanation is done to embodiment of the present utility model above, but the utility model is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from the utility model aim.

Claims

1. a NTC temperature sensor, it mainly comprises tensioning member (1), thermistor (2), wire (4), epoxy resin (5); Described tensioning member (1) for closing one end, the tubular shell of one end open; Described thermistor (2) is placed in tensioning member (1); Described wire (4) one end connects the lead-in wire (21) of thermistor (2), and the other end extends tensioning member (1); Described epoxy resin (5) is placed in tensioning member (1), and the lead-in wire of thermistor (2) (21) and part wire (4) are solidificated in tensioning member (1); It is characterized in that: described NTC temperature sensor also comprises:

-PVC line skin (7); PVC line skin (7) is wrapped in the lead-in wire (21) of thermistor (2) outward;

-the first heat-shrink tube (31); First heat-shrink tube (31) shrinks and is solidificated in PVC line skin (7) outward;

-double wall heat shrinks transparent casing (6); Double wall heat shrinks transparent casing (6) and is set in part first heat-shrink tube (31) and wire (4) outward, and extends to tensioning member (1) outward with wire (4), shrinks solidification;

-the second heat-shrink tube (32); Second heat-shrink tube (32) two ends are socketed in tensioning member (1) openend respectively and shrink transparent casing (6) outward with the double wall heat stretching out tensioning member (1), shrink solidification.