CN218211654U

CN218211654U - Double-function water temp. sensor for automobile

Info

Publication number: CN218211654U
Application number: CN202222682375.3U
Authority: CN
Inventors: 邵万曙; 邵作友; 商曹荣
Original assignee: Wenzhou Day Electromechanical Technology Co ltd
Current assignee: Wenzhou Day Electromechanical Technology Co ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2023-01-03
Anticipated expiration: 2032-10-08

Abstract

The utility model discloses a difunctional temperature sensor for car, which comprises a housin, the end cover, the casing has the first cavity of coaxial intercommunication, the second cavity, the third cavity, set up side by side in the third cavity and be fixed with thermistor one through heat conduction silicone grease, thermistor two, the end cover lower part is equipped with flange portion, the flange portion upper end is equipped with first toper portion, the flange portion lower extreme is equipped with second toper portion, flange portion installs in first cavity, the sealing washer has been installed between second toper portion and the first cavity bottom face, when second toper portion lower extreme and second cavity mouth end contact fit, sealing washer and second toper portion, first cavity bottom face and first cavity inner wall correspond the butt, first cavity mouth end is equipped with riveting limit and first toper portion contact fit.

Description

Double-function water temp. sensor for automobile

Technical Field

The utility model relates to a temperature sensor technical field specifically is difunctional temperature sensor for car.

Background

Water temperature sensor for car installs on engine cylinder body, be used for measuring the temperature of engine coolant liquid and turn into the signal of telecommunication with temperature signal and provide temperature display instrument and ECU, this type of water temperature sensor's structure adopts the spring promptly for the spring compression structure among the prior art, parts such as middle insulating pad are with resistance assembly in the casing, the accessory is many, assembly process production efficiency is low, adopt the plane structure of borduring to be connected between casing and the end cover simultaneously, it seals to set up the rubber circle between end cover lower extreme and the casing correspondence terminal surface, the end cover lower extreme corresponds contactless between the terminal surface with the casing, this kind of structure, casing and end cover rotate easily, especially behind the high temperature rubber circle expend with heat and contract with cold more obviously, lead to sealed inefficacy easily, output accuracy is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a difunctional temperature sensor for car to solve the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: the difunctional water temperature sensor for the automobile comprises a shell 1 and an end cover 2, wherein the shell 1 is provided with a first cavity 101, a second cavity 102 and a third cavity 103 which are coaxially communicated, a thermistor I4 and a thermistor II 5 are arranged in the third cavity 103 in parallel and fixed through heat-conducting silicone grease 3, a flange part 201 is arranged at the lower part of the end cover 2, a first conical part 202 is arranged at the upper end of the flange part 201, a second conical part 203 is arranged at the lower end of the flange part 201, the flange part 201 is installed in the first cavity 101, a sealing ring 7 is installed between the second conical part 203 and the bottom end face of the first cavity 101, when the lower end of the second conical part 203 is in contact fit with the end face of the second cavity 102, the sealing ring 7 is in butt joint with the second conical part 203, the bottom end face of the first cavity 101 and the inner wall of the first cavity 101, and a riveting edge 104 is arranged at the end of the first cavity 101 and is in contact fit with the first conical part 202.

Further, it is provided with respectively with to mould in the end cover 2 interior moulding the inserted sheet 8 that thermistor one 4 with two 5 correspond of thermistor, inserted sheet 8 with thermistor one 4 with equally divide between two 5 of thermistor and do not connect through indisputable fluorine dragon wire 6.

Further, the teflon wire 6 has a slack in the second cavity 102.

The utility model has the advantages that: the utility model provides a difunctional temperature sensor for car adopts heat conduction silicone grease to seal thermistor admittedly, when guaranteeing temperature sensitivity, ensures that two thermistor's position is stable, and through the second cavity that sets up as the buffering cavity, the teflon wire has the relaxation section in the second cavity, effectively avoids the influence of casing expend with heat and contract with cold to the teflon wire, guarantees the electric connection stability, has reduced spare part compared with prior art, and the equipment is simple, and production efficiency is high, and the temperature measurement precision is high; the double-conical part structure has firm connection and good sealing effect of the turned edge type riveting edge.

Drawings

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

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the dual-function water temperature sensor for the automobile comprises a shell 1 and an end cover 2, wherein the shell 1 is provided with a first cavity 101, a second cavity 102 and a third cavity 103 which are coaxially communicated, a thermistor i 4 and a thermistor ii 5 are arranged in the third cavity 103 in parallel and fixed through a heat-conducting silicone grease 3, and the thermistor is fixedly sealed by the heat-conducting silicone grease 3, so that the position stability of the two thermistors is ensured while the temperature sensitivity is ensured, and further, the thermistor i 4, the thermistor ii 5 and the shell 1 are mutually insulated, and the interference is reduced; the lower part of the end cover 2 is provided with a flange part 201, the upper end of the flange part 201 is provided with a first conical part 202, the lower end of the flange part 201 is provided with a second conical part 203, the flange part 201 is arranged in the first cavity 101, a sealing ring 7 is arranged between the second conical part 203 and the bottom end face of the first cavity 101, when the lower end of the second conical part 203 is in contact fit with the opening end of the second cavity 102, the sealing ring 7 is correspondingly abutted against the second conical part 203, the bottom end face of the first cavity 101 and the inner wall of the first cavity 101, the opening end of the first cavity 101 is provided with a riveting edge 104 which is in contact fit with the first conical part 202, here, the first conical part 202 is designed, the riveting edge 104 is correspondingly conical, the riveting edge 104 can be formed in a curling mode during riveting, so as to avoid bottom end impact, meanwhile, through the design of the second conical part 203, the sealing ring 7 shrinks at low temperature, at the moment, the sealing ring 7 generates axial direction to enable the sealing ring 7 to be tightly wrapped on the second conical part 203, so that the sealing ring 7 is tightly wrapped, the sealing effect is ensured, meanwhile, the sealing ring 7 is firmly pressed against the end face of the end cover 2, and the end cover 2, thus the end cover 2 is in contact with the first conical part 202, and the first conical part 1, and the end cover 1, so as to be in a firm connection; when the temperature is high, the sealing ring 7 expands, and at the moment, due to the limiting effect of the inner wall of the first cavity 101, the sealing ring 7 respectively abuts against the second conical part 203 and the bottom end face of the first cavity 101, so that the tightness is guaranteed, and meanwhile, the shell 1 and the end cover 2 are prevented from loosening, namely, the water temperature sensor in the technical scheme can keep the shell 1 and the end cover 2 firmly connected when the temperature changes, and the reliability of the water temperature sensor is effectively guaranteed.

Further preferably, the end cover 2 is internally injected with an insert 8 corresponding to the thermistor I4 and the thermistor II 5, and the insert 8 is connected with the thermistor I4 and the thermistor II 5 through Teflon leads 6; the preferred teflon wire 6 has a slack in the second lumen 102; through the arrangement, the electric signals of the thermistor I4 and the thermistor II 5 are respectively transmitted to the ECU and the temperature display instrument through the inserting piece 8, the two functions are not interfered with each other, and the precision is guaranteed; through the second cavity 102 that sets up as the buffering cavity, teflon wire 6 has the relaxation section in second cavity 102, effectively avoid 1 expend with heat and contract with cold of casing to produce influences such as dragging teflon wire 6, guarantee electric connection stability, it is good to adopt 6 resistant high low temperature performance of teflon wire, be favorable to guaranteeing that signal of telecommunication's stability reduces the temperature measurement error, through the above setting, this technical scheme compares prior art and has still reduced spare part, the equipment is simple, high production efficiency, temperature response is sensitive, high accuracy, temperature error range control 1 ℃.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

In the description of the present invention, it should be understood that the terms "upper", "lower", "between", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Difunctional water temperature sensor for car includes casing (1), end cover (2), its characterized in that: the shell (1) is provided with a first cavity (101), a second cavity (102) and a third cavity (103) which are coaxially communicated, the third cavity (103) is internally arranged in parallel and is fixedly provided with a thermistor I (4) and a thermistor II (5) through heat-conducting silicone grease (3), the lower portion of the end cover (2) is provided with a flange portion (201), the upper end of the flange portion (201) is provided with a first conical portion (202), the lower end of the flange portion (201) is provided with a second conical portion (203), the flange portion (201) is arranged in the first cavity (101), a sealing ring (7) is arranged between the second conical portion (203) and the bottom end face of the first cavity (101), when the lower end of the second conical portion (203) is in contact fit with the opening end of the second cavity (102), the sealing ring (7) is in butt joint with the second conical portion (203), the bottom end face of the first cavity (101) and the inner wall of the first cavity (101), and the first cavity (101) is provided with a riveting edge (104) in contact fit with the first conical portion (202).

2. The dual function water temperature sensor for automobile as claimed in claim 1, wherein: the injection molding is provided with in end cover (2) respectively with thermistor one (4) with inserted sheet (8) that thermistor two (5) correspond, inserted sheet (8) with thermistor one (4) with equally divide between thermistor two (5) and do not connect through indisputable fluorine dragon wire (6).

3. The dual function water temperature sensor for automobile as claimed in claim 2, wherein: the Teflon wire (6) has a slack section within the second lumen (102).