CN102435340B - Water temperature sensor used in motor vehicle - Google Patents
Water temperature sensor used in motor vehicle Download PDFInfo
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- CN102435340B CN102435340B CN 201110312223 CN201110312223A CN102435340B CN 102435340 B CN102435340 B CN 102435340B CN 201110312223 CN201110312223 CN 201110312223 CN 201110312223 A CN201110312223 A CN 201110312223A CN 102435340 B CN102435340 B CN 102435340B
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Abstract
The invention discloses a water temperature sensor used in a motor vehicle. The water temperature sensor comprises a housing. In the housing, a heat conducting glue is filled, a spot-welding connected skeleton is installed and a printed board which can collect temperatures and control a circuit is assembled. A thermistor and a magnetic switch are installed on an upper surface of the printed board. The thermistor and the magnetic switch are connected with a skeleton signal respectively. A heat-conducting fin clads on one end of the printed board which is close to the housing. The heat-conducting fin is located between the housing and the printed board and contacts with the thermistor. An annular earth tag is sleeved on the skeleton on which the printed board is installed. One end of the earth tag is welded with the printed board and the other end is connected with the housing. On the end of the housing, one end of the skeleton which is far from the printed board forms flanging connection with the housing. In the prior art, there are many disadvantages that: output reliability is low; a structure is complex and an assembly technology is cumbersome and the like. By using the water temperature sensor used in the motor vehicle, the above disadvantages can be overcome. The output reliability is good. The structure is simple and operability is strong.
Description
Technical field
The present invention relates to motor vehicle fittings and sensor detecting, particularly, relate to a kind of automobile-use cooling-water temperature sensor.
Background technology
At present, cooling-water temperature sensor is for detection of automobile cooling.The inner spring that adopts of ubiquitous cooling-water temperature sensor applies a pressure to heat-sensitive sheet on the market, guarantees contacting of heat-sensitive sheet and shell; Simultaneously, by lead heat-sensitive sheet is connected with the transmission plug, comes the output temperature signal by plug, this kind structure requires all very high to pliability, the temperature tolerance of lead; Otherwise lead ruptures easily, and is particularly not only relatively strict to the requirement of spring, and is difficult to guarantee the heat-sensitive sheet reliable ground, causes no signal output; In addition, in the operation engineering, assembly technology is loaded down with trivial details, and employee's proficiency is also had very high requirement.
The cooling-water temperature sensor of said structure, reliability is relatively poor, can't satisfy the requirement of auto vendor, and therefore, exigence is invented a kind of novel cooling-water temperature sensor.
Defectives such as in sum, in realizing process of the present invention, the inventor finds to exist at least in the prior art that output reliability is poor, complex structure and assembly technology are loaded down with trivial details.
Summary of the invention
The objective of the invention is to: at the problems referred to above, propose a kind of automobile-use cooling-water temperature sensor, to realize good, the simple in structure and workable advantage of output reliability.
For achieving the above object, the technical solution used in the present invention is: a kind of automobile-use cooling-water temperature sensor comprises shell, in the inside of described shell, be filled with heat-conducting glue, and the skeleton of spot welding connection be installed and be equipped with temperature acquisition and the printed board of control circuit; At the upper surface of described printed board, thermistor and magnetic switch are installed; Described thermistor and magnetic switch are connected with the skeleton signal respectively; Near an end of shell, be coated with conducting strip in described printed board, described conducting strip contacts between shell and printed board and with thermistor; Be equipped with on the skeleton of described printed board, be set with the ground lug of annular, an end of described ground lug is connected with shell with printed board welding, the other end; In the end of described shell, skeleton is connected with the shell flange at the end away from printed board.
Further, at the lower surface of described skeleton and printed board, lid is equipped with for fixing, insulation and protects the capping of skeleton and printed board.
Further, the end away from printed board is with O-ring seal at described skeleton.
Further, described skeleton comprises skeleton body and the plug that is positioned at enclosure, and plug comprises first signal terminal and secondary signal terminal; Described first signal terminal is connected with thermistor, and the secondary signal terminal is connected with magnetic switch.
Further, described heat-conducting glue comprises heat-conducting silicone grease.
Further, described shell comprises the copper shell.
The automobile-use cooling-water temperature sensor of various embodiments of the present invention, owing to comprise shell, the inside at shell is filled with heat-conducting glue, and the skeleton of spot welding connection is installed and is equipped with temperature acquisition and the printed board of control circuit; At the upper surface of printed board, thermistor and magnetic switch are installed; Thermistor and magnetic switch are connected with the skeleton signal respectively; Near an end of shell, be coated with conducting strip in printed board, conducting strip contacts between shell and printed board and with thermistor; Be equipped with on the skeleton of printed board, be set with the ground lug of annular, an end of ground lug is connected with shell with printed board welding, the other end; In the end of shell, skeleton is connected with the shell flange at the end away from printed board; Signal terminal can be injected on the skeleton, be equipped with temperature acquisition and be connected by spot welding with skeleton with the printed board of control circuit, ground lug directly contacts with shell, can guarantee the reliability of exporting; Simultaneously, also very simple in the assembling process of this automobile-use cooling-water temperature sensor, operability is stronger; Thereby the defective that can overcome that output reliability in the prior art is poor, complex structure and assembly technology is loaded down with trivial details is to realize good, the simple in structure and workable advantage of output reliability.
Other features and advantages of the present invention will be set forth in the following description, and, partly from instructions, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the instructions of writing, claims and accompanying drawing.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of instructions, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural representation of the axial cut-open view of automobile-use cooling-water temperature sensor according to the present invention;
Fig. 2 is the structural representation of the axial cut-open view of the front view of skeleton in the automobile-use cooling-water temperature sensor according to the present invention;
Fig. 3 is the structural representation of the axial cut-open view of the vertical view of skeleton in the automobile-use cooling-water temperature sensor according to the present invention.
By reference to the accompanying drawings, Reference numeral is as follows in the embodiment of the invention:
1-first signal terminal; 2-skeleton body; The 3-O-ring seal; The 4-ground lug; The 5-shell; The 6-magnetic switch; The 7-heat-conducting glue; The 8-capping; The 9-printed board; The 10-thermistor; The 11-conducting strip.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in restriction the present invention.
According to the embodiment of the invention, provide a kind of automobile-use cooling-water temperature sensor.As shown in Figure 1-Figure 3, present embodiment comprises shell 5, in the inside of shell 5, is filled with heat-conducting glue 7, and the skeleton of spot welding connection is installed and is equipped with temperature acquisition and the printed board of control circuit 9; At the upper surface of printed board 9, thermistor 10 and magnetic switch 6 are installed; Thermistor 10 and magnetic switch 6 are connected with the skeleton signal respectively; At printed board 9 end near shells 5, be coated with conducting strip 11, conducting strip 11 contacts between shell 5 and printed board 9 and with thermistor 10; On the skeleton that printed board 9 is installed, be set with the ground lug 4 of annular, an end of ground lug 4 is connected with printed board 9, the other end is connected with shell 5; In the end of shell 5, skeleton is connected with shell 5 flange at the end away from printed board 9.
Here, skeleton comprises the skeleton body 2 that is positioned at shell 5 inside, and be connected with 2 injection mouldings of skeleton body, first signal terminal 1 and secondary signal terminal; First signal terminal 1 is connected with thermistor 10, and the secondary signal terminal is connected with magnetic switch 6; Heat-conducting glue 7 comprises heat-conducting silicone grease, and shell 5 comprises the copper shell.
Further, in the above-described embodiments, at the lower surface of skeleton and printed board 9, lid is equipped with for fixing, insulation and protects the capping 8 of skeleton and printed board 9; At the upper surface of printed board 9, the end away from printed board is with O-ring seal 3 on the skeleton.
In the above-described embodiments, printed board 9 and skeleton are carried out spot welding be connected, be stamped capping 8 above, be used for fixing printed board 9 and skeleton 2, simultaneously printed board 9 is protected, the effect of reach insulation, fixing; Wherein, thermistor 10 and magnetic switch 6 are housed in the printed board 9, are used for obtaining temperature information and warning message, by being connected with first signal terminal 1 and secondary signal terminal on the skeleton, information is transmitted out; The connected mode of this kind signal has overcome the breaking phenomena that can cause with the lead connection; So just can not cause output line to disconnect because vibrating and pushing, cause signal to export.
In the above-described embodiments, thermistor 10 and conducting strip 11 can guarantee that thermistor 10 obtains the accuracy of temperature signal; Ground lug 4 is enclosed within on the skeleton, one end is connected with printed board 9 ground, pour into an amount of heat-conducting glue 7 in the shell 5, the integral body that skeleton and printed board 9 the formed shell 5 of packing into, outside water temperature passes to heat-conducting glue 7 by the copper shell, thermistor 10 contacts by conducting strip 11 and heat-conducting glue 7, obtains temperature information; Shell 5 and skeleton 2 are connected by flange, and contact is reliable.
In the above-described embodiments, directly first signal terminal 1 and secondary signal terminal are injected into respectively on the skeleton body 2, the printed board 9 that is equipped with temperature acquisition and control circuit and skeleton 2 are connected by spot welding; Simultaneously, ground lug 4 directly contacts with shell 5, can guarantee the reliability exported, and is simultaneously, also very simple, workable in the assembling process of automobile-use cooling-water temperature sensor.
The automobile-use cooling-water temperature sensor of above-described embodiment adopts printed board 9 to be connected by welding manner with skeleton, is stamped capping 8 above, is used for fixing and insulate, and protects printed board 9; Wherein, thermistor 10 and magnetic switch 6 are housed in the printed board 9, be used for temperature of reaction information and warning message, information passes to the terminal on the skeleton again, with its output, this kind mode connects reliably, has avoided opening circuit and short circuit phenomenon because of the output that reasons such as vibration, extruding cause, and conducting strip 11 is housed near the thermistor 10 improves heat transfer efficiency; Ground lug 4 is enclosed within on the skeleton, and an end is connected with printed board 9 ground; Pour into an amount of heat-conducting glue 7 in the shell 5, the integral body that skeleton and printed board 9 the formed shell 5 of packing into, outside temperature passes to heat-conducting glue 7 by the copper shell, and thermistor 10 contacts by conducting strip 11 and heat-conducting silicone grease, obtains temperature information; Shell 5 and skeleton 2 are connected by flange; This automobile-use cooling-water temperature sensor, simple and reasonable for structure, compact, output performance is reliable, and the processing technology feasibility is strong, is fit to produce in enormous quantities.
The automobile-use cooling-water temperature sensor of above-described embodiment, can be installed in water jacket or the thermostat of engine cylinder-body, cylinder cap and rise up in the water jacket, the temperature detection that is used for automobile cooling, and its temperature signal is converted into resistance signal outputs to automobile instrument and demonstrate relevant temperature, so that human pilot is understood the coolant temperature data in time, accurately.
In sum, the automobile-use cooling-water temperature sensor of various embodiments of the present invention, owing to comprise shell, the inside at shell is filled with heat-conducting glue, and the skeleton of spot welding connection is installed and is equipped with temperature acquisition and the printed board of control circuit; At the upper surface of printed board, thermistor and magnetic switch are installed; Thermistor and magnetic switch are connected with the skeleton signal respectively; Near an end of shell, be coated with conducting strip in printed board, conducting strip contacts between shell and printed board and with thermistor; Be equipped with on the skeleton of printed board, be set with the ground lug of annular, an end of ground lug is connected with shell with printed board welding, the other end; In the end of shell, skeleton is connected with the shell flange at the end away from printed board; Signal terminal can be injected on the skeleton, be equipped with the printed board of temperature acquisition and control circuit and skeleton by being welded to connect, ground lug directly contacts with shell, can guarantee the reliability of exporting; Simultaneously, also very simple in the assembling process of this automobile-use cooling-water temperature sensor, operability is stronger; Thereby the defective that can overcome that output reliability in the prior art is poor, complex structure and assembly technology is loaded down with trivial details is to realize good, the simple in structure and workable advantage of output reliability.
It should be noted that at last: the above only is the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment the present invention is had been described in detail, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. automobile-use cooling-water temperature sensor, it is characterized in that: comprise shell, the inside at described shell is filled with heat-conducting glue, and skeleton is installed and is equipped with temperature acquisition and the printed board of control circuit;
At the upper surface of described printed board, thermistor and magnetic switch are installed; Described thermistor is connected with the skeleton signal respectively with magnetic switch; Near an end of shell, be coated with conducting strip in described printed board, described conducting strip contacts between shell and printed board and with thermistor;
Be equipped with on the skeleton of described printed board, be set with the ground lug of annular, an end of described ground lug and printed board welding, the other end links to each other with shell; In the end of described shell, near the end of described skeleton away from printed board, skeleton is connected with the shell flange;
End away from printed board on described skeleton is with O-ring seal.
2. automobile-use cooling-water temperature sensor according to claim 1 is characterized in that: at the lower surface of described skeleton and printed board, lid is equipped with for fixing, insulation and protects the capping of skeleton and printed board.
3. automobile-use cooling-water temperature sensor according to claim 2, it is characterized in that: described skeleton comprises skeleton body and the plug that is positioned at enclosure, plug comprises first signal terminal and secondary signal terminal; Described first signal terminal is connected with thermistor, and the secondary signal terminal is connected with magnetic switch.
4. automobile-use cooling-water temperature sensor according to claim 3, it is characterized in that: described heat-conducting glue comprises heat-conducting silicone grease.
5. automobile-use cooling-water temperature sensor according to claim 4, it is characterized in that: described shell comprises the copper shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110312223 CN102435340B (en) | 2011-10-14 | 2011-10-14 | Water temperature sensor used in motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110312223 CN102435340B (en) | 2011-10-14 | 2011-10-14 | Water temperature sensor used in motor vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN102435340A CN102435340A (en) | 2012-05-02 |
| CN102435340B true CN102435340B (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110312223 Active CN102435340B (en) | 2011-10-14 | 2011-10-14 | Water temperature sensor used in motor vehicle |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103382879A (en) * | 2013-07-18 | 2013-11-06 | 芜湖东方汽车仪表有限公司 | Water temperature sensing alarm |
| CN105414698B (en) * | 2015-12-24 | 2018-02-23 | 深圳市金洲精工科技股份有限公司 | A kind of micro- brill welding temperature detection control apparatus and method |
| CN112284558A (en) * | 2020-09-02 | 2021-01-29 | 孝感华工高理电子有限公司 | Novel water temperature sensor |
| CN116818156A (en) * | 2023-08-30 | 2023-09-29 | 河北美泰电子科技有限公司 | MEMS automobile pressure sensor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03179227A (en) * | 1989-12-07 | 1991-08-05 | Matsushita Electric Works Ltd | Thermistor for hot water control |
| CN201011501Y (en) * | 2007-01-04 | 2008-01-23 | 曲阜天博汽车零部件制造有限公司 | Combined water temperature sensor for internal combustion engine |
| CN202305049U (en) * | 2011-10-14 | 2012-07-04 | 无锡盛邦电子有限公司 | Water temperature sensor for motor vehicle |
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| CN102435340A (en) | 2012-05-02 |
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