CN212133921U

CN212133921U - Water temperature sensor

Info

Publication number: CN212133921U
Application number: CN202021110676.3U
Authority: CN
Inventors: 莫小燕
Original assignee: Guangdong Shunde Kaige Electronic Industry Co Ltd
Current assignee: Guangdong Shunde Kaige Electronic Industry Co Ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2020-12-11
Anticipated expiration: 2030-06-16

Abstract

The utility model relates to a water temperature sensor, it includes metal casing, thermistor and lead-out wire, metal casing is equipped with the inner chamber, the both ends of inner chamber are blind end and open the end respectively, thermistor sets up in the inner chamber, and be close to the blind end, one side of thermistor blind end dorsad is equipped with the pin, pin and lead-out wire one end electric connection, the pin is sealed through the shrink sleeve parcel with the lead-out wire junction outside, the shrink sleeve is equipped with the chuck outward, the chuck includes the support ring, interior jack catch and outer jack catch, the one end of interior jack catch is connected with the interior anchor ring of support ring, the other end of interior jack catch inclines to the central axis direction of support ring, the one end of outer jack catch is connected with the outer anchor ring of support ring, the other end of outer jack catch is thermistor dorsad, and lean out, the. The thermistor of the water temperature sensor is fixed in the closed end of the inner cavity through the chuck, the thermistor cannot move, the distance between the thermistor and the temperature sensing end is ensured, and the heat exchange efficiency is improved.

Description

Water temperature sensor

Technical Field

The utility model relates to a temperature sensor, especially a water temperature sensor.

Background

Current water temperature sensor, including metal casing, thermistor and lead-out wire, metal casing is equipped with the inner chamber, and the both ends of inner chamber are blind end and open the end respectively, and thermistor sets up in the inner chamber and near the blind end, and thermistor is equipped with the pin to one side of blind end dorsad, pin and lead-out wire one end electric connection, and the pin is sealed through the shrink sleeve parcel with the lead-out wire junction outside, still pack epoxy layer between the blind end of inner chamber and the open end to encapsulate thermistor in the inner chamber. However, since the thermistor is fixed only after the epoxy resin layer is cured because the epoxy resin layer is fluid when it is filled, the thermistor is easily displaced before the epoxy resin layer is cured, and the temperature measurement effect is unstable.

Disclosure of Invention

An object of the utility model is to provide a rational in infrastructure, effectual temperature sensor is fixed a position when thermistor installs.

The purpose of the utility model is realized like this:

the utility model provides a water temperature sensor, includes metal casing, thermistor and lead-out wire, and metal casing is equipped with the inner chamber, and the both ends of inner chamber are blind end and open the end respectively, and thermistor sets up in the inner chamber and near the blind end, and thermistor is equipped with the pin to one side of blind end dorsad, pin and lead-out wire one end electric connection, and the pin is sealed through the shrink sleeve parcel with the lead-out wire junction outside, its characterized in that, the shrink sleeve is equipped with the chuck outward, and the chuck includes support ring, interior jack catch and outer jack catch, and the one end of interior jack catch is connected with the interior anchor ring of support ring, and the other end of interior jack catch inclines to the central axis direction of support ring, and the one end of outer jack catch is connected with the outer anchor ring face of support ring, and the other end of outer jack catch is.

The purpose of the utility model can also adopt the following technical measures to solve:

more specifically, an epoxy resin layer is filled between the closed end and the open end of the inner cavity.

As a further alternative, the orientation of the inner jaws coincides with the orientation of the outer jaws.

As a further scheme, the number of the outer clamping jaws is more than two, and the outer clamping jaws are mutually separated.

As a further scheme, more than two inner clamping jaws are arranged, and the inner clamping jaws are mutually separated, so that when epoxy resin is filled, the epoxy resin can enter the closed end through the clamping chuck to fill a gap between the thermistor and the inner cavity wall, and the heat transfer efficiency of the thermistor is improved.

As a further scheme, a limiting convex ring surface, a sealing ring positioning groove (13) and a threaded connection section are sequentially arranged between the periphery of the metal shell corresponding to the closed end and the open end, and a tangent plane is axially arranged on the outer wall of the threaded connection section.

As a further scheme, the metal shell is provided with a temperature sensing end, and the outer side of the closed end of the inner cavity is the temperature sensing end; the temperature sensing end extends outwards and is in a bullet shape or a needle shape.

The utility model has the advantages as follows:

the thermistor of the water temperature sensor is fixed in the closed end of the inner cavity through the chuck, and the thermistor cannot shift in the process of filling epoxy resin or waiting for curing of the epoxy resin so as to ensure the distance between the thermistor and the temperature sensing end, improve the heat exchange efficiency and realize rapid detection of the temperature in liquid.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a first embodiment of the present invention.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Fig. 4 is a schematic view of the top view structure of the chuck of the present invention.

FIG. 5 is a schematic sectional view of the structure of FIG. 4B-B.

Fig. 6 is a schematic view of the bottom view of the chuck of the present invention.

Fig. 7 is a schematic structural diagram of another embodiment of the present invention.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

referring to fig. 1 to 6, a water temperature sensor comprises a metal shell 1, a thermistor 3 and a lead-out wire 2, wherein the metal shell 1 is provided with an inner cavity, two ends of the inner cavity are respectively a closed end and an open end, the thermistor 3 is arranged in the inner cavity and close to the closed end, one side of the thermistor 3, which is back to the closed end, is provided with a pin 31, the pin 31 is electrically connected with one end of the lead-out wire 2, the outside of the joint of the pin 31 and the lead-out wire 2 is wrapped and sealed by a heat-shrinkable sleeve 4, the chuck 7 is arranged outside the heat-shrinkable sleeve 4, the chuck 7 comprises a support ring 71, an inner chuck 73 and an outer chuck 72, one end of the inner chuck 73 is connected with the inner annular surface of the support ring 71, the other end of the inner chuck 73 inclines towards the central axis direction of the support ring 71, one end of the outer chuck 72 is connected with the outer annular surface of the support ring 71, the other end of the outer chuck 72 is back to the thermistor 3 and inclines outwards, and the other end of the outer chuck 72 is tightly supported on the inner wall of the inner cavity.

An epoxy resin layer 5 is filled between the closed end and the open end of the inner cavity.

The orientation of the inner jaw 73 coincides with the orientation of the outer jaw 72.

The outer claws 72 are provided with more than two, and the outer claws 72 are mutually separated.

The inner claws 73 are provided with more than two, and the inner claws 73 are mutually separated. The number of the inner claws 73 and the outer claws 72 is four in this embodiment.

The periphery of the metal shell 1 is provided with a limiting convex ring surface 12, a sealing ring positioning groove 13 and a threaded connection section 14 in sequence between the corresponding closed end and the open end, and the outer wall of the threaded connection section 14 is axially provided with a tangent plane 141.

The metal shell 1 is provided with a temperature sensing end 11, and the outer side of the closed end of the inner cavity is provided with the temperature sensing end 11; the temperature-sensing end 11 extends outward and is in the shape of a bullet (or, the outward extending part of the temperature-sensing end 11 is in the shape of a needle, as shown in fig. 7).

Claims

1. A water temperature sensor comprises a metal shell (1), a thermistor (3) and an outgoing line (2), wherein the metal shell (1) is provided with an inner cavity, two ends of the inner cavity are respectively a closed end and an open end, the thermistor (3) is arranged in the inner cavity and close to the closed end, one side of the thermistor (3) back to the closed end is provided with a pin (31), the pin (31) is electrically connected with one end of the outgoing line (2), the outside of the joint of the pin (31) and the outgoing line (2) is wrapped and sealed by a heat-shrinkable sleeve (4), the water temperature sensor is characterized in that a chuck (7) is arranged outside the heat-shrinkable sleeve (4), the chuck (7) comprises a support ring (71), an inner chuck (73) and an outer chuck (72), one end of the inner chuck (73) is connected with the inner ring surface of the support ring (71), and the other end of the inner chuck (73) inclines towards, one end of the outer clamping jaw (72) is connected with the outer ring surface of the support ring (71), the other end of the outer clamping jaw (72) is back to the thermistor (3) and inclines outwards, and the other end of the outer clamping jaw (72) is tightly supported on the inner wall of the inner cavity.

2. A water temperature sensor according to claim 1, wherein an epoxy layer (5) is further filled between the closed end and the open end of the inner chamber.

3. A water temperature sensor according to claim 1, characterised in that the orientation of the inner jaw (73) coincides with the orientation of the outer jaw (72).

4. Water temperature sensor according to claim 1, characterised in that there are more than two outer jaws (72), each outer jaw (72) being spaced apart from each other.

5. A water temperature sensor according to claim 1, wherein there are more than two inner catches (73), each inner catch (73) being spaced apart from each other.

6. The water temperature sensor according to claim 1, characterized in that a limiting convex ring surface (12), a sealing ring positioning groove (13) and a threaded connection section (14) are sequentially arranged between the corresponding closed end and the open end of the periphery of the metal shell (1), and a tangent plane (141) is axially arranged on the outer wall of the threaded connection section (14).

7. The water temperature sensor according to claim 4, wherein the metal shell (1) is provided with a temperature sensing end (11), and the temperature sensing end (11) is arranged outside the closed end of the inner cavity; the temperature sensing end (11) extends outwards and is in a bullet shape or a needle shape.