CN218724847U

CN218724847U - Water temperature detector

Info

Publication number: CN218724847U
Application number: CN202222824932.0U
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: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-03-24
Anticipated expiration: 2032-10-25

Abstract

The utility model discloses a water temperature detector, which comprises a metal shell, a thermistor, insulating heat-conducting filler and a wire, wherein the tail end of the metal shell is provided with an inner cavity extending forwards; the periphery of the metal shell is provided with an annular groove for arranging a sealing ring, the tail end of the metal shell is provided with a bulge, and the periphery of the bulge is provided with an annular clamping groove; the insulating heat-conducting filler extends out of the tail end of the metal shell and wraps the protrusion and the annular clamping groove. The metal casing afterbody of this kind of water temperature detector is equipped with the draw-in groove, and insulating heat conduction filler covers outside the draw-in groove, forms reliable connection, prevents that insulating heat conduction filler from breaking away from, and increases insulating heat conduction filler and metal casing's laminating area, and the reinforcing resists the ability that moisture invaded.

Description

Water temperature detector

Technical Field

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

Background

Chinese patent document No. CN212133921U discloses a water temperature sensor in 2020, 12/11, which comprises a metal shell, a thermistor and an outgoing line, wherein the metal shell is provided with an inner cavity, two ends of the inner cavity are respectively a closed end and an open end, the thermistor is arranged in the inner cavity and close to the closed end, one side of the thermistor, which faces away from the closed end, is provided with a pin, the pin is electrically connected with one end of the outgoing line, the outside of the joint of the pin and the outgoing line is wrapped and sealed by a heat-shrinkable sleeve, the heat-shrinkable sleeve is externally provided with a chuck, the chuck comprises a support ring, an inner jaw and an outer jaw, one end of the inner jaw is connected with an inner annular surface of the support ring, the other end of the inner jaw inclines towards the central axis direction of the support ring, one end of the outer jaw is connected with an outer annular surface of the support ring, the other end of the outer jaw faces away from the thermistor and inclines outwards, and the other end of the outer jaw is tightly supported on the inner wall of the inner cavity. The potting material in the inner cavity of the metal shell of the structure is only attached to the wall of the inner cavity, and the inner cavity wall is smooth and easy to loosen.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a temperature detector that simple structure is reasonable, insulating heat conduction filler connects reliably, the leakproofness is good.

The purpose of the utility model is realized like this:

a water temperature detector comprises a metal shell, a thermistor, insulating heat-conducting filler and a lead, wherein the tail end of the metal shell is provided with an inner cavity extending forwards; the periphery of the metal shell is provided with an annular groove for arranging a sealing ring, the tail end of the metal shell is provided with a bulge, and the periphery of the bulge is provided with an annular clamping groove; the insulating heat-conducting filler extends out of the tail end of the metal shell and wraps the protrusion and the annular clamping groove.

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

more specifically, the tail end of the inner cavity is also internally provided with an internal thread.

As a further scheme, the tail end periphery of the metal shell is provided with a connector, the protrusion is arranged at the tail end of the connector, the annular groove is arranged at the periphery of the connector, and the periphery of the connector is larger than the peripheries of the metal shell and the protrusion.

As a further alternative, the wire extends laterally outside the metal shell with respect to a central axis of the metal shell.

The utility model has the advantages as follows:

(1) The metal casing afterbody of this kind of water temperature detector is equipped with the draw-in groove, and insulating heat conduction filler covers outside the draw-in groove, forms reliable connection, prevents that insulating heat conduction filler from breaking away from, and increases insulating heat conduction filler and metal casing's laminating area, and the reinforcing resists the ability that moisture invaded.

(2) The internal thread at the tail part of the inner cavity of the metal shell of the water temperature detector increases the adhesive force of the insulating heat-conducting filler, and further prevents separation.

Drawings

Fig. 1 is a schematic view of the structure of the metal shell of the present invention.

Fig. 2 is a schematic view of the top view structure of the metal casing of the present invention.

FIG. 3 isbase:Sub>A schematic sectional view A-A of FIG. 2.

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

Fig. 5 is a schematic cross-sectional structure of fig. 4.

Detailed Description

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

referring to fig. 1 to 5, a water temperature detector comprises a metal shell 1, a thermistor 2, an insulating heat-conducting filler 4 and a lead 5, wherein the tail end of the metal shell 1 is provided with an inner cavity 16 extending forwards, the thermistor 2 is arranged in the inner cavity 16 and electrically connected with the lead 5, the lead 5 extends out of the metal shell 1, and the thermistor 2 is encapsulated in the inner cavity 16 by the insulating heat-conducting filler 4; the periphery of metal casing 1 is equipped with annular groove 12 that is used for setting up sealing washer 3, and the tail end of metal casing 1 is equipped with arch 15, and the periphery of arch 15 is equipped with ring groove 14.

The insulating heat-conducting filler 4 extends to the outside of the tail end of the metal shell 1 and wraps the protrusion 15 and the ring-shaped clamping groove 14.

The tail end of the inner cavity 16 is also provided with an internal thread 13.

The tail end periphery of metal casing 1 is equipped with connector 11, arch 15 sets up the tail end at connector 11, annular groove 12 sets up in connector 11 periphery, and connector 11 periphery is greater than metal casing 1 and protruding 15 periphery.

The wires extend out of the metal casing 1 transversely with respect to the central axis of the metal casing 1.

The insulating and heat conducting filler 4 may be injection molded.

The foregoing is the preferred embodiment of the present invention, showing and describing the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but rather that various changes and modifications may be made without departing from the spirit and scope of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water temperature detector comprises a metal shell (1), a thermistor (2), an insulating heat-conducting filler (4) and a lead (5), wherein the tail end of the metal shell (1) is provided with an inner cavity (16) extending forwards, the thermistor (2) is arranged in the inner cavity (16) and is electrically connected with the lead (5), the lead (5) extends out of the metal shell (1), and the thermistor (2) is encapsulated in the inner cavity (16) by the insulating heat-conducting filler (4); the method is characterized in that: an annular groove (12) for arranging a sealing ring (3) is formed in the periphery of the metal shell (1), a protrusion (15) is arranged at the tail end of the metal shell (1), and an annular clamping groove (14) is formed in the periphery of the protrusion (15); the insulating heat-conducting filler (4) extends out of the tail end of the metal shell (1) and wraps the protrusion (15) and the annular clamping groove (14).

2. The water temperature probe as recited in claim 1, wherein: an internal thread (13) is also arranged in the tail end of the inner cavity (16).

3. The water temperature probe as recited in claim 1, wherein: the tail end periphery of metal casing (1) is equipped with connector (11), protruding (15) set up the tail end at connector (11), annular groove (12) set up in connector (11) periphery, and connector (11) periphery is greater than metal casing (1) and protruding (15) periphery.

4. The water temperature probe as recited in claim 1, wherein: the lead transversely extends out of the metal shell (1) relative to the central axis of the metal shell (1).