CN204831480U - Engine oil level sensor - Google Patents
Engine oil level sensor Download PDFInfo
- Publication number
- CN204831480U CN204831480U CN201520507361.5U CN201520507361U CN204831480U CN 204831480 U CN204831480 U CN 204831480U CN 201520507361 U CN201520507361 U CN 201520507361U CN 204831480 U CN204831480 U CN 204831480U
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- out cylinder
- level sensor
- ball float
- outer cylindrical
- conduction ball
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Abstract
The utility model discloses an engine oil level sensor locates the oil tank, including outer cylindrical and electrically conductive floater, outer cylindrical bottom detachably connects in the oil tank bottom, and the outer cylindrical bottom is equipped with the inlet port, and the outer cylindrical top is equipped with the exhaust hole, and electrically conductive floater slidable ground adaptation is installed inside outer cylindrical, even has external conductors on the electrically conductive floater, studs with the resistance card along the axial on the outer cylindrical inner wall. The utility model discloses well outer cylindrical non -deformable, electrically conductive floater motion is more smoothly more reliable to can ensure better detection accuracy.
Description
Technical field
The utility model relates to a kind of auto parts and components, and in particular, it relates to a kind of fuel level sensor.
Background technology
In traditional oils level sensor, be generally contact conducting by conductive spring leaf with ceramic resistor silk, reached the change of oil level display by the change of resistance value.Existing fuel level sensor, cantilever is longer, and without any protection, in the process of transport, and easily causes cantilever deflection in assembling process.After fuel tank has carried out demarcating, if the sub-pivot arm distortion of the oil float of fuel level sensor, the gross error indicated directly causing oil level, client's tend in the process used occurs that but oil meter shows gasoline but do not have gasoline inside actual fuel tank, easily causes the accident that vehicle casts anchor; If vehicle at high speeds problems occurs, by directly causing vehicle to stop working, very easily cause vehicle collision accident.Built-in oil sensor is developed again for this problem people, more reliable comparatively speaking, and oil float of built-in oil level sensor is all that slidable fit is on a guide rod at present, therefore higher to the flatness of guide rod, smoothness requirements, guide rod, once deform or foreign material attachment also can cause float movement to be obstructed, therefore designs a high-precision fuel level sensor do not affected by extraneous assembling and transportation and seems necessary.Publication number is that the invention of CN102032940A discloses a kind of liquid level sensor on April 27th, 2011, include column, float moving up and down is arranged with outside described column, the guide piece stoping float circumference to be rotated is provided with between column and float, the top of column is provided with upper cover, and bottom is provided with hermetic terminal; Column inside is evenly distributed with some reed capsules from top to bottom, and the output terminal of reed capsule is connected into the jointing holes set by upper cover; Float is provided with the magnet of reaction tongue reed pipe; Fuel tank is stretched out in the upper end of column, and the column of extension is connected with the assembly flange fixed with fuel tank.Thus, thus the induction of magnet and reed capsule can be avoided to produce deviation, to improve the measuring accuracy of liquid level.Further, connector is fixing to be become to be integrated with sensor on a sensor, makes the connection of its circuit simply, safely, reliably.Moreover the utility model production and assembly simple and fast, installation and maintenance are also very convenient.But as mentioned above, elongated column is comparatively fragile, once deform or foreign material attachment also can cause float movement to be obstructed.
Utility model content
All there is motion in traditional oils level sensor and existing built-in oil level sensor causes float movement to have some setbacks because of yielding, and then affect the problem of accuracy in detection, for overcoming this problem, the utility model provides one more reliably can guarantee the smooth and easy motion of float, improves the fuel level sensor of accuracy in detection.
The technical solution of the utility model is: a kind of fuel level sensor, be located in fuel tank, comprise out cylinder and conduction ball float, removably be connected to tank bottoms bottom out cylinder, be provided with oil supply hole bottom out cylinder, out cylinder top is provided with vent port, conduction ball float slidably adaptation is installed on out cylinder inside, and conduction ball float and out cylinder inwall interference fit, conduction ball float is connected with external wire, out cylinder inwall studs with resistor disc vertically.Oil can enter out cylinder inside, and conduction ball float balancing resistance and gravity under buoyancy, float on pasta all the time.Different from existing built-in oil level sensor, the conduction ball float of this fuel level sensor is not be through on guide rod, but entirety is placed in out cylinder, by the movement locus of out cylinder restriction conduction ball float, and the guide rod that hollow out cylinder is less relative to diameter, non-deformability is stronger, and no matter conducts electricity ball float and how to rotate and can contact with resistor disc, therefore the ball float that conducts electricity can more reliably move more swimmingly, and it is more accurate to detect.
As preferably, resistor disc is two panels and is oppositely arranged.Conduction ball float forms parallel measure loop with two panels resistor disc simultaneously, detects more reliable, but also two-way can be detected by algorithm design the parsing carrying out different accuracy, obtain the result that precision is higher.
As preferably, is provided with filter screen along xsect in out cylinder, the position of filter screen is higher than oil supply hole.Filter screen can hinder oarse-grained foreign material to enter in out cylinder, avoids the motion affecting conduction ball float.
As preferably, out cylinder top is provided with top cover, and top cover is provided with external wire outlet.Conduction ball float external wire, from out cylinder top trace, adapts to the axially-movable of conduction ball float most.
As preferably, the matching allowance of conduction ball float and out cylinder inwall is 0.08mm-0.12mm.The magnitude of interference of 0.08mm-0.12mm can guarantee that conduction ball float fully contacts conduction with out cylinder inwall, and unlikely contact is too tight again, increases friction, to guarantee conduction ball float one-movement-freedom-degree.
As preferably, out cylinder inwall is polished surface.The polishing of out cylinder inwall to reduce friction factor as far as possible, thus can reduce conduction ball float moving resistance.
As preferably, the total sectional area of vent port be the 1-1.5 of oil supply hole total sectional area doubly.The total sectional area of vent port should be not less than oil supply hole total sectional area, and Quick air-discharge when can guarantee oil-feed like this, avoids the formation of vapour lock and hinder smooth and easy oil-feed.
The beneficial effects of the utility model are:
Work is more reliable more smooth and easy, and it is more accurate to detect.In the utility model, out cylinder is not easily out of shape, and the motion of conduction ball float is more smooth and easy more reliable, thus can guarantee better detection accuracy.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is a kind of plan structure schematic diagram of out cylinder in the utility model;
Fig. 3 is Making programme of the present utility model.
In figure, 1-out cylinder, 2-conducts electricity ball float, 3-oil supply hole, 4-vent port, 5-external wire, 6-resistor disc, 7-top cover, 8-filter screen.
Embodiment
Below in conjunction with accompanying drawing specific embodiment, the utility model is described in further detail.
Embodiment 1:
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of fuel level sensor, is located in fuel tank, and this fuel level sensor comprises out cylinder 1 and conduction ball float 2, and out cylinder 1 bottom thread is connected to fuel tank inner bottom part, and it is inner that conduction ball float 2 adaptation is installed on out cylinder 1.Out cylinder 1 is made with PA66, is provided with oil supply hole 3 bottom out cylinder 1, and out cylinder 1 top is provided with vent port 4.Conduction ball float 2 is hollow ball, and main body nitrile rubber makes, surface all copper facing.Conduction ball float 2 is connected with two external wires 5, out cylinder 1 inwall studs with resistor disc 6 vertically, and resistor disc 6 in tile, is oppositely arranged for two panels, the arc length of every sheet resistance sheet 6 is 2/5ths of out cylinder 1 inwall girth, and resistor disc 6 is concordant with out cylinder 1 inwall.Conduction ball float 2 forms parallel measure loop with two panels resistor disc 6 simultaneously, and two measure loop adopt different algorithm detections to carry out the testing result parsing of different accuracy, article one, the minimum variable of measure loop is 1, another minimum variable is for being 0.01, integer is read from a measure loop during reading, read decimal from another measure loop, thus obtain the higher result of precision.Conduction ball float 2 coordinates interference slightly with between out cylinder 1 inwall, the magnitude of interference is 0.1mm, also accurately control when the wall thickness of conduction ball float 2 makes simultaneously, out cylinder 1 inwall through polishing to reduce friction factor, in addition, the total sectional area size of vent port 4 is 1.5 times of oil supply hole 3 total sectional area, guarantee that vent port 4 has efficient exhaust capacity, when the inner oil level of out cylinder 1 changes, air above conduction ball float 2 can be discharged fast, vapour lock can not be formed, can guarantee that the buoyancy of conduction ball float 2 in fluid is greater than 10:1 with suffered drag ratio when running like this, conduction ball float 2 can slide swimmingly.Out cylinder 1 inner bottom part is provided with filter screen 8 along xsect, and the position of filter screen 8 is higher than oil supply hole 3.Out cylinder 1 top is provided with top cover 7, and top cover 7 is provided with two external wire outlets, and external wire 5 passes from external wire outlet.
Because out cylinder 1 is communicated with fuel tank by oil supply hole 3, therefore the pasta in out cylinder 1 and the pasta in fuel tank contour, in fuel tank during fuel head change, conduction ball float 2 can overcome resistance and corresponding movement, all the time keep in touch with resistor disc 6 simultaneously, the change in location of conduction ball float 2 causes the effective length change of resistor disc 6 in measure loop, cause resistor disc 6 resistance change, by the corresponding relation of resistance value and level height, this fuel level sensor is demarcated during making, detect when resolving and can reflect oil level height by resistance measurement.
Embodiment 2:
Between conduction ball float 2 and out cylinder 1 inwall, the magnitude of interference is 0.08mm, and the total sectional area size of vent port 4 is 1.2 times of oil supply hole 3 total sectional area, and all the other are with embodiment 1.
Embodiment 3:
Between conduction ball float 2 and out cylinder 1 inwall, the magnitude of interference is 0.12mm, and the total sectional area size of vent port 4 is equal with oil supply hole 3 total sectional area, and all the other are with embodiment 1.
Claims (7)
1. a fuel level sensor, be located in fuel tank, it is characterized in that comprising out cylinder (1) and conduction ball float (2), out cylinder (1) bottom is removably connected to tank bottoms, out cylinder (1) bottom is provided with oil supply hole (3), out cylinder (1) top is provided with vent port (4), it is inner that conduction ball float (2) is slidably mounted on out cylinder (1), and conduction ball float (2) and out cylinder (1) inwall interference fit, conduction ball float (2) is connected with external wire (5), out cylinder (1) inwall studs with vertically resistor disc (6).
2. fuel level sensor according to claim 1, is characterized in that resistor disc (6) is oppositely arranged for two panels.
3. fuel level sensor according to claim 1, it is characterized in that being provided with filter screen (8) along xsect in out cylinder (1), the position of filter screen (8) is higher than oil supply hole (3).
4. fuel level sensor according to claim 1, is characterized in that out cylinder (1) top is provided with top cover (7), and top cover (7) is provided with external wire outlet.
5. fuel level sensor according to claim 1, is characterized in that conduction ball float (2) is 0.08mm-0.12mm with the matching allowance of out cylinder (1) inwall.
6. fuel level sensor according to claim 5, is characterized in that out cylinder (1) inwall is polished surface.
7. the fuel level sensor according to claim 1 or 2 or 3 or 4 or 5, is characterized in that the total sectional area of vent port (4) is 1-1.5 times of oil supply hole (3) total sectional area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520507361.5U CN204831480U (en) | 2015-07-13 | 2015-07-13 | Engine oil level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520507361.5U CN204831480U (en) | 2015-07-13 | 2015-07-13 | Engine oil level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204831480U true CN204831480U (en) | 2015-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520507361.5U Active CN204831480U (en) | 2015-07-13 | 2015-07-13 | Engine oil level sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN204831480U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500794A (en) * | 2016-10-22 | 2017-03-15 | 钟贵洪 | A kind of automobile oil level sensor |
| CN114217645A (en) * | 2022-02-22 | 2022-03-22 | 深圳海润游艇码头工程有限公司 | Yacht wharf intelligent water tank monitoring system and method |
-
2015
- 2015-07-13 CN CN201520507361.5U patent/CN204831480U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500794A (en) * | 2016-10-22 | 2017-03-15 | 钟贵洪 | A kind of automobile oil level sensor |
| CN114217645A (en) * | 2022-02-22 | 2022-03-22 | 深圳海润游艇码头工程有限公司 | Yacht wharf intelligent water tank monitoring system and method |
| CN114217645B (en) * | 2022-02-22 | 2022-05-06 | 深圳海润游艇码头工程有限公司 | Yacht wharf intelligent water tank monitoring system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200706 Address after: 310051 Jiangling Road, Hangzhou, Zhejiang, No. 1760, No. Co-patentee after: Chengdu Geely Automobile Manufacturing Co., Ltd Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Address before: 310051 Jiangling Road, Hangzhou, Zhejiang, No. 1760, No. Co-patentee before: CHENGDU GAOYUAN AUTOMOBILE INDUSTRY Co.,Ltd. Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. |