CN2532471Y - Lubricant pressure sensor - Google Patents
Lubricant pressure sensor Download PDFInfo
- Publication number
- CN2532471Y CN2532471Y CN 02219695 CN02219695U CN2532471Y CN 2532471 Y CN2532471 Y CN 2532471Y CN 02219695 CN02219695 CN 02219695 CN 02219695 U CN02219695 U CN 02219695U CN 2532471 Y CN2532471 Y CN 2532471Y
- Authority
- CN
- China
- Prior art keywords
- resistance
- assembly
- pressure sensor
- palladium
- plated film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a mobiloil pressure sensor including a shell, a septum chamber disc with an oil intake spiral pipe, a septum chamber composed of a plurality of membrances, a spring damp component, an adjustable resistance assembly and an outlet terminal of the adjustable resistance assembly. The pressure sensor is characterized in that thick-film resistance cards are adopted as resistance cards in the changeable resistance assembly; the utility model has the advantages of fastness, thermal resistance and fast thermal dispersing, overcoming the deficiency that the current pressure sensor becomes invalid because the resistance wire is very easy to be burnt out when the pressure sensor is in short-time short circuit condition.
Description
Technical field: the utility model relates to a kind of engine oil pressure pickup.
Background technology: engine oil pressure pickup is important part in diesel motor and the petrol engine, it reaches bayonet gauge in the panel board with the machine oil oil mass in the engine and oil pressure information, make driver or operator can grasp the situation of machine oil at any time, to avoid engine to damage because of oil starvation, resistor disc in the existing engine oil pressure pickup generally is to arrange to make around resistance wire on a slice insulating thin, because the resistance wire that adopts is all very thin, in case when occurring the situation of circuit short time short circuit accidentally, be very easy to blow, especially two ends copper rivet joint and swing contact contact point place, because of the above-mentioned situation of the relatively large easier appearance of its contact resistance, cause engine oil pressure pickup to lose efficacy.
Summary of the invention: the purpose of this utility model for overcome the deficiencies in the prior art provide a kind of durable, be difficult for the engine oil pressure pickup that damages because of circuit short circuit in short-term.
The utility model is to take following technical solution to achieve the above object: the resistor disc in the variable resistor assembly adopts the thick-film resistor sheet.
Because thick-film resistor has firm, heat-resisting, rapid heat dissipation, therefore can fast the heat that produces because of the short circuit of circuit short time be left, thereby avoid damaging.
The utility model is described in further detail below in conjunction with accompanying drawing.
Description of drawings:
Accompanying drawing 1 is the utility model embodiment inner structure synoptic diagram;
Accompanying drawing 2 is the thick-film resistor structural representation.
Specific embodiment: as shown in Figure 1, the utility model specific embodiment and the existing the same film chamber dish 3 that one one end has the barrel-shaped shell 4 at the end and has the oil-feed screwed pipe that still has, shell 4 is formed by stretching by sheet iron, diaphragm 5 is affixed on film chamber dish 3 edges after rolling compresses sealing and fixing on shell 4 openings edge, space between diaphragm 5 and the film chamber dish 3 forms the film chamber 2 of having only an import, diaphragm 5 outsides be sticked damping spring assembly and variable resistor assembly, the resistor disc 1 that different is in the variable resistor assembly adopts the thick-film resistor sheet, as shown in Figure 2, the thick-film resistor sheet is a substrate by the rectangle ceramic sheet, ceramic substrate 1a surface is provided with by some contiguous mutually and disconnected palladium-silver plated film band 1b, palladium-silver plated film band 1b is aplysia punctata and is arranged in fan-shaped swing contact and slips the district, the arc of being covered with Ruthenium resistance plated film band 1c is arranged on palladium-silver plated film band 1b homonymy one end, and every adjacent palladium-silver plated film band 1b is communicated with by a bit of Ruthenium resistance plated film band 1c.
Claims (3)
1, a kind of engine oil pressure pickup, comprise shell, have the film chamber dish of oil-feed screwed pipe and film chamber, spring damping assembly and variable resistor assembly and the exit thereof that diaphragm is formed, be provided with push rod in the spring damping assembly, the variable resistor assembly is provided with swing contact and resistor disc, described push rod is subjected to the film chamber to expand or shrink and promote and then drive the swing contact and slip to slidably reciprocate in the district at resistor disc and change the resistance of resistance assembly output, and it is characterized in that: described resistor disc (1) adopts the thick-film resistor sheet.
2, engine oil pressure pickup according to claim 1, it is characterized in that: described thick-film resistor sheet is to be provided with swing contact contiguous mutually by some and that disconnected palladium-silver plated film band (1b) arrangement forms to slip the district on ceramic substrate (1a), is connected with resistance between the adjacent palladium-silver plated film band (1).
3, engine oil pressure pickup according to claim 1 and 2 is characterized in that: described palladium-silver plated film band (1b) is aplysia punctata to be arranged, and slips the district and is fan-shaped, on palladium-silver plated film band (1b) homonymy one end arc of being covered with Ruthenium resistance plated film band (1c) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02219695 CN2532471Y (en) | 2002-03-29 | 2002-03-29 | Lubricant pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02219695 CN2532471Y (en) | 2002-03-29 | 2002-03-29 | Lubricant pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2532471Y true CN2532471Y (en) | 2003-01-22 |
Family
ID=33698130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02219695 Expired - Fee Related CN2532471Y (en) | 2002-03-29 | 2002-03-29 | Lubricant pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2532471Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113363033A (en) * | 2021-07-01 | 2021-09-07 | 西安欣贝电子科技有限公司 | Composite-structure thick-film oil level sensor resistor disc and preparation method thereof |
-
2002
- 2002-03-29 CN CN 02219695 patent/CN2532471Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113363033A (en) * | 2021-07-01 | 2021-09-07 | 西安欣贝电子科技有限公司 | Composite-structure thick-film oil level sensor resistor disc and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030122 Termination date: 20100329 |