CN201535786U - Functional test fixture for oxygen sensor - Google Patents
Functional test fixture for oxygen sensor Download PDFInfo
- Publication number
- CN201535786U CN201535786U CN200920107807XU CN200920107807U CN201535786U CN 201535786 U CN201535786 U CN 201535786U CN 200920107807X U CN200920107807X U CN 200920107807XU CN 200920107807 U CN200920107807 U CN 200920107807U CN 201535786 U CN201535786 U CN 201535786U
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- China
- Prior art keywords
- anchor clamps
- lambda sensor
- test
- cover plate
- bottom cover
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- 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 Oxygen Concentration In Cells (AREA)
Abstract
The utility model provides a functional test fixture for an oxygen sensor, which comprises a box-type fixture shell. The bottom surface of the fixture shell is closed by a bottom cover plate which can be opened, and the wall body of the top surface of the fixture shell is provided with an inserting hole for an oxygen sensor joint to be inserted; the bottom cover plate is provided with a plurality of front test needles and back test needles which are correspondingly connected one to one through leads, wherein the number of the front test needles is equal to that of the back test needles; the front test needles used for being spliced with the oxygen sensor joint are inlaid in the bottom cover plate through needle sleeves, whereas the back test needles are respectively arranged in insulation lead sleeves directly inlaid in the bottom cover plate through the needle sleeves; and the insulation lead sleeves are used for being connected with test equipment. Different wiring modes which can be used on different test equipment are realized through converting the positions of the insulation lead sleeves; moreover, the functional test fixture can be rapidly disassembled and assembled in structure and has convenient maintenance and low manufacture cost, and the service life of the test fixture is prolonged by replacing the needle sleeves of the test needles.
Description
Technical field
The utility model relates to a kind of lambda sensor functional test anchor clamps.
Background technology
Lambda sensor is very important sensor in the Hyundai Motor, be used for monitoring the content or the concentration of oxygen in the engine exhaust, and according to measured signal voltage of data output, feed back to engine controller, thereby the size of control distributive value, it is installed in the exhaust system usually, directly contacts with exhaust airstream.
When making and use lambda sensor, often need test, to determine the reliability of its function to its function.In the prior art, be the function of test lambda sensor, at first need it is mechanically fixed, connect with testing apparatus with electric means then.For this reason, the anchor clamps that need the injection mo(u)lding structure usually.
For making the anchor clamps of this injection mo(u)lding of finishing mechanical fixation simultaneously and being electrically connected, just need have the injection mold of corresponding labyrinth, cause the manufacturing cost height.In addition, anchor clamps are often scrapped because of not changing to repair after the testing needle fracture; The mode of connection can't change, and can only use on special test equipment.
The utility model content
Task of the present utility model provides a kind of novel lambda sensor functional test anchor clamps, its defective at institute's utilization structure in the prior art is improved, not only solved the replacing problem of testing needle, prolonged the serviceable life of anchor clamps, and expanded the range of application of test fixture, reduce manufacturing cost.
At being proposed of task, the utility model proposes a kind of anchor clamps that are used to test the lambda sensor function, box anchor clamps housing, the bottom cover plate that this anchor clamps housing underrun can be opened is sealed, and is provided with the insertion mouth that is used to insert the lambda sensor joint on the end face wall body of this anchor clamps housing; On the anchor clamps housing, be provided with fixedly buckle, be used for the lambda sensor joint that inserts is fixed; On bottom cover plate, be provided with the quantity identical a plurality of fronts testing needle and the back side testing needle that respectively link to each other correspondingly by lead, the front testing needle that wherein is used for plugging with the lambda sensor joint is embedded in bottom cover plate by needle guard, back side testing needle then is contained in the insulator pin cover by needle guard respectively, and these insulator pin covers directly are embedded in the bottom cover plate with can pulling down and change the position and are used for being connected with testing apparatus.By the insulator pin cover that can embed with pulling down, make and the lead-in wire cover can be taken off from bottom cover plate, and after changing the position, insert in the bottom cover plate again, thereby changed putting in order of back side testing needle, realize the different modes of connection thus, all can realize general different testing apparatuss at different testing apparatuss.
In addition, reliable more and convenient for the connection and the dismounting that make lambda sensor, on the anchor clamps housing, also be provided with fixedly buckle, it for example compresses the lambda sensor joint by the spring compression effect after the lambda sensor joint inserts automatically.Certainly this fixedly buckle is not essential, the socket connection that the lambda sensor joint also can be by himself and testing needle and fix with the friction of anchor clamps housing.Generally because lambda sensor joint bearing load not is this fixing enough, certainly, if use the said fixing buckle, then can be additionally fixed oxygen sensor connector more reliably.
The driving of the fixedly buckle of pressing plate form can have multiple mode, for example by on fixing buckle respectively effect spring and cylinder are arranged, under the mating reaction of the reset force of spring and cylinder thrust, realize that pressing plate carries out rotation around pivot between fixed position that the lambda sensor joint is compressed and off-position that the lambda sensor joint is unclamped.Certainly, can make spring and cylinder act on same end or each end of pressing plate respectively, the bearing effect that the pivot by pressing plate plays in the centre realizes that pressing plate carries out rotation around pivot between fixed position and off-position.
Can be provided with spring in the needle guard of this external front testing needle, after fixedly buckle unclamped, the lambda sensor joint was ejected automatically thus.
In addition, this test fixture need not the mold of labyrinth, anchor clamps housing and bottom cover plate adopt insulating material, testing needle, needle guard, lead, insulator pin cover, spring, clamping platen all are embedded in the bottom cover plate, can realize fast assembling-disassembling, easy to maintenance and low cost of manufacture, by changing the needle guard of testing needle, can change the testing needle of fracture, prolong the serviceable life of test fixture, keep in repair more convenient.
Description of drawings
Following according to preferred embodiment, in conjunction with the accompanying drawings the utility model is described.Accompanying drawing is depicted as:
Fig. 1: the profile synoptic diagram of lambda sensor functional test anchor clamps under assembled state;
Fig. 2 a: the cut-away view of lambda sensor functional test anchor clamps, removed the anchor clamps shell, but shown the lambda sensor joint in the grafting in this figure;
Fig. 2 b: the cut-away view of lambda sensor functional test anchor clamps, not only removed the anchor clamps shell, and taken off the lambda sensor joint in this figure;
Embodiment
Fig. 1 has represented a kind of embodiment of lambda sensor functional test anchor clamps 1, can see the profile of anchor clamps housing when lambda sensor joint 2 inserts in Fig. 1, wherein, and for the clear joint 2 that only schematically shows lambda sensor.Shown in the accompanying drawing only is schematic structure, and proportionate relationship shown in it and layout do not constitute the strictness restriction to practical structures.
In the embodiment shown in fig. 1, anchor clamps housing 3 is configured to box-shaped, and the bottom cover plate 4 that its underrun can be opened seals.In addition, be provided with on the end face wall body of anchor clamps housing 3 and insert mouth 5, lambda sensor joint 2 is inserted in anchor clamps housing 3 inner spaces by this insertion mouth 5.In addition, in the anchor clamps shell, also be provided with fixedly buckle 6, in this embodiment, described fixedly buckle 6 is configured to the pressing plate of lever-type structure, but this pressing plate by pivot 7 rotations be bearing on the anchor clamps housing 3, can see that in Fig. 2 a and 2b two lug portions 8 of pressing plate have the axis hole that is used to pass pivot 7, then can see the pivot 7 of signal in Fig. 2 a.The driving of the fixedly buckle 6 of pressing plate form can have multiple mode, for example by fixedly acting on spring and cylinder respectively at same end or each end on the buckle 6, under the mating reaction of the reset force of spring and cylinder thrust, realize that pressing plate carries out rotation between fixed position that lambda sensor joint 2 is compressed and off-position that lambda sensor joint 2 is unclamped.In other words, under the effect of spring, pressing plate compresses sensor connector 2, and after test was finished, cylinder ejected, and with length of spring compressed, pressing plate rotates, and joint 2 ejects from anchor clamps under the effect of needle guard 11 medi-springs automatically.At this for clarity sake, not shown spring and the cylinder that acts on pressing plate, but its position can promptly can act on the same end of pressing plate relative to one another according to concrete structure and needs flexible arrangement, also can act on an end of pressing plate separately.
After lambda sensor joint 2 is inserted in anchor clamps housing 3 inner spaces by this insertion mouth 5, peg graft with four the front testing needles 10 that are located on the bottom cover plate 4.Wherein, above-mentioned front testing needle 10 be not direct injection moulding or interlocking in bottom cover plate 4, but be inserted at first respectively in the needle guard 11, needle guard 11 is embedded in the bottom cover plate of being made by insulating material 4 with press-fit manner then.Thus, after certain testing needle fracture, also can change easily.And needle guard of the prior art is fixed on the body by Shooting Technique, can't change after the testing needle fracture, and whole anchor clamps are scrapped because of keeping in repair.Therefore, the utility model proposes anchor clamps and can change needle guard fast, prolonged the anchor clamps life-span.
Shown in Fig. 2 a to 2b, on bottom cover plate 4, also be provided with other four back side testing needles 12.As shown in the figure, four back side testing needles 12 here become row in addition, connect correspondingly with above-mentioned four front testing needles 10 respectively by the lead (not shown), and with aforementioned four front testing needles, 10 the same being inserted into respectively in the needle guard.For clarity sake, it is also not shown in the drawings to connect lead, but it for example can be laid in the wiring groove at the bottom cover plate back side.Different with above-mentioned four front testing needles that plug with lambda sensor joint 2 10 is, other becomes four back side testing needles 12 needle guard separately of row is not directly to be embedded in the bottom cover plate 4, but be assemblied in respectively in the insulator pin cover 13, insulator pin cover 13 is embedded in the bottom cover plate 4 then.These insulator pins cover 13 is connected with corresponding back side testing needle 12 on the one hand, draws on the other hand and is connected to testing apparatus, and the signal of sensor is sent on the testing apparatus.By with insulator pin cover 13 versatilely, can be embedded in the bottom cover plate 4 with pulling down and change the position, can again it be taken off from bottom cover plate 4 and shift one's position, promptly change the annexation of front and back testing needle and testing apparatus, just realized the different modes of connection.For example, testing apparatus for the category-A type, need be in first insulator pin cover position feed measurement signal, carry voltage in second insulator pin cover position, testing apparatus for the category-B type then need be carried voltage in first insulator pin cover position, in second insulator pin cover position feed measurement signal, so when the test fixture 1 that the utility model proposed is migrated category-B type testing apparatus from category-A type testing apparatus, only need first and second insulator pins cover switch, promptly exchange the position of back side testing needle, can adapt to the wiring requirement of A and two kinds of different measuring equipment of B.
This structure has huge advantage, because different testing apparatus electrical wirings is different, because the mode of connection of original anchor clamps can not change, therefore every testing apparatus must be equipped with unit clamp.Test fixture 1 after the improvement can be realized general, and the bottom cover plate 4 of test fixture 1 is opened, and just can realize different wiring combinations by the position that changes four insulator pin covers 13, and anchor clamps can be applicable on the different testing apparatuss, reach general purpose.
For with test fixture 1 overall fixed on testing apparatus, shown in Fig. 2 a, on bottom cover plate 4, also have aperture 14 near side-walls, can insert the stationary shaft bolt that is fixedly connected on the testing apparatus thus, thereby whole test fixture 1 is fixed on the testing apparatus.In addition, also on the adjacent wall of anchor clamps housing 3, also be provided with the threaded line pipe 15 of perforation, be screwed into gib screw thus, on the stationary shaft bolt that inserts by above-mentioned aperture 14, realize thus more whole test fixture 1 being fixed on the testing apparatus up to roof pressure.
To the description that the utility model carries out, is a kind of exemplary explanation by accompanying drawing.Various technical characterictics in this proposition not only can use individually, also can be combined to form different technical schemes by different way mutually, and these are all in the scope of the utility model design.
Claims (7)
1. be used to test the anchor clamps (1) of lambda sensor function, comprise:
-box anchor clamps housing (3), the bottom cover plate (4) that this anchor clamps housing (3) underrun can be opened is sealed, and is provided with the insertion mouth (5) that is used to insert lambda sensor joint (2) on the end face wall body of this anchor clamps housing (3);
-on described anchor clamps housing (3), be provided with the securing fixedly buckle of lambda sensor joint (2) (6) that is used for inserting;
-on bottom cover plate (4), be provided with the quantity identical a plurality of fronts testing needles (10) and the back side testing needle (12) that respectively link to each other correspondingly by lead, the front testing needle (10) that wherein is used for plugging with lambda sensor joint (2) is embedded in bottom cover plate (4) by needle guard (11), back side testing needle (12) then is contained in the insulator pin cover (13) by the needle guard of oneself respectively, and these insulator pin covers (13) can directly be embedded in the bottom cover plate (4) with pulling down and be used for being connected with testing apparatus.
2. the anchor clamps (1) that are used to test the lambda sensor function as claimed in claim 1 is characterized in that described fixedly buckle (6) is configured to the pressing plate of lever-type structure, and this pressing plate can be bearing on the anchor clamps housing (3) to rotation by pivot (7).
3. the anchor clamps (1) that are used to test the lambda sensor function as claimed in claim 2, it is characterized in that, effect has spring and cylinder respectively on fixing buckle (6), promotes and the cooperation realization pressing plate of spring reset power carries out rotation around pivot (7) between fixed position that lambda sensor joint (2) is compressed and off-position that lambda sensor joint (2) is unclamped by cylinder.
4. the anchor clamps (1) that are used to test the lambda sensor function as claimed in claim 1 is characterized in that, are provided with the spring that is used for testing needle (10) ejection in the needle guard (11) of described front testing needle (10).
5. the anchor clamps (1) that are used to test the lambda sensor function as claimed in claim 1 is characterized in that, the lead that described front testing needle (10) and back side testing needle (12) are connected correspondingly is laid in the wiring groove at bottom cover plate (4) back side.
6. the anchor clamps (1) that are used to test the lambda sensor function as claimed in claim 1, it is characterized in that, go up close side-walls in described bottom cover plate (4) and also have aperture (14), insertion is used for fixing the stationary shaft bolt that is connected on the testing apparatus in this aperture (14).
7. the anchor clamps (1) that are used to test the lambda sensor function as claimed in claim 6, it is characterized in that, on the adjacent wall of described anchor clamps housing (3), also be provided with the threaded line pipe (15) of perforation, by this be screwed into the threaded line pipe gib screw and up to roof pressure on the stationary shaft bolt that inserts by above-mentioned aperture (14), be used for whole test fixture (1) is fixed to testing apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920107807XU CN201535786U (en) | 2009-04-30 | 2009-04-30 | Functional test fixture for oxygen sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920107807XU CN201535786U (en) | 2009-04-30 | 2009-04-30 | Functional test fixture for oxygen sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201535786U true CN201535786U (en) | 2010-07-28 |
Family
ID=42535565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920107807XU Expired - Fee Related CN201535786U (en) | 2009-04-30 | 2009-04-30 | Functional test fixture for oxygen sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201535786U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167761A (en) * | 2017-07-21 | 2017-09-15 | 威胜集团有限公司 | A kind of special fixture tested for embedded electric energy meter |
-
2009
- 2009-04-30 CN CN200920107807XU patent/CN201535786U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167761A (en) * | 2017-07-21 | 2017-09-15 | 威胜集团有限公司 | A kind of special fixture tested for embedded electric energy meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100728 Termination date: 20180430 |