CN102758664B - Oil gauge installation structure - Google Patents
Oil gauge installation structure Download PDFInfo
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- CN102758664B CN102758664B CN201210125099.9A CN201210125099A CN102758664B CN 102758664 B CN102758664 B CN 102758664B CN 201210125099 A CN201210125099 A CN 201210125099A CN 102758664 B CN102758664 B CN 102758664B
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- oil level
- level gage
- sealed department
- main body
- patchhole
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Abstract
The invention provides an oil gauge installation structure capable of preventing damage of a seal part in an oil gauge insertion hole. The oil gauge insertion hole (15) is successively provided with a guide-in part (41), the seal part (42) and a necking part (43) from the open end side. The seal part (42) is formed into a parallel hole with a smooth surface, and the inner diameter (D2) of the seal part is configured to be greater than the outer diameter (Di) of an insertion part (34) and is lower than the outer diameter (Do) of an O-shaped ring (25). The seal part (42) is disposed more outward than a conical surface (St) defined through connection of an open edge (41a) of the guide-in part (41) and an inner edge (43a) of the necking part (43).
Description
Technical field
The present invention relates to the mounting structure of the oil level gage in motor vehicle internal combustion engine etc., specifically, relate to the technology of the sealed department damage preventing oil level gage from inserting in the hole.
Background technique
In the internal-combustion engine (below be denoted as motor) of automobile-use, in order to the cooling etc. of the lubrication and piston of carrying out valve actuating gear, possess oil delivery to the lubrication system of each several part.When the lubrication system of wet sump formula, machine oil is stored in the oil sump of the bottom being arranged at crankcase, and by the oil pump pressurized delivered of transmission of crankshaft to oil circuit.The part being attached to cylinder wall in machine oil, be mixed into part in blow-by gas in firing chamber combustion, therefore consume gradually along with the running of motor.Therefore, the user of Motor Vehicle needs by adopting oil level gage suitably to check up Engine oil oil level (that is, the storage volume of machine oil).
Oil level gage is made up of oil level gage main body and handle (handle), pasta detection unit is formed in the bottom of described oil level gage main body, described handle (handle) integration is formed at the top of oil level gage main body, can confirm engine oil level by machine oil at the attachment state of pasta detection unit.Following such oil level gage etc. is known to: adopt the oil level gage (referenced patent document 1) using resin as raw-material shaft-like oil level gage main body in oil level gage; And adopt to have the oil level gage (referenced patent document 2) of flexible steel plate as the oil level gage main body of raw-material sabre (サ mono-ベ Le) shape.And handle is generally be raw-material injection-molded article with resin, and be embedded in this insertion part outside the elastomer seal such as handle has columned insertion part, O RunddichtringO, and this insertion part is embedded into the oil level gage patchhole being formed at motor.
Patent documentation 1: Japan Patent No. 4145079 publications
Patent documentation 2: Japanese Unexamined Patent Publication 9-195747 publication
Owing to there is a large amount of supplementary equipment classes, pipe arrangement, distribution class in motor, in order to make Inspection easily carry out (in order to the insertion and disengaging that make oil level gage become easy), oil level gage patchhole is formed in the cam cover of the topmost part being positioned at motor mostly.With the compactness etc. of motor in recent years also complement each other ground, the measuring hole being formed at cylinder head or cylinder block etc. is difficult to linearly be formed to oil sump from oil level gage patchhole.In such motor, oil level gage main body curves cannot be avoided when assembly lube bit table, for resinous oil level gage main body, likely owing to being exposed to the hot environment of engine interior and sclerosis and be difficult to carry out exactly the metering of oil level under bending state, or in order to check oil level and drawing oil bit table main body time lose, therefore mostly adopt the oil level gage with the oil level gage main body of army's knife-like.
On the other hand, in motor in recent years, in order to realize lightweight and cost reduction, mostly making cam cover become the injection-molded article of resin, oil level gage main body is formed as army's knife-like, under these circumstances problem as described below can occur.Namely, the internal surface (sealed department) of Inspection person metal oil level gage body contact oil level gage patchhole when inserting/extracting oil level gage, therefore, when making the plug increased frequency of oil level gage when the long time running due to motor, the edge due to oil level gage main body cannot be avoided sliding contact to occur and produces burr and wearing and tearing at sealed department.Consequently, by oil level gage insertion with when extracting, likely make the O type circle damage being assemblied in insertion part, or O type circle is no longer close to sealed department and blow-by gas is leaked.In order to avoid above-mentioned problem, although also can the metal collar of oil level gage patchhole etc. be had by press-in and make the collar integrated with cam cover, but when adopting the method, the component parts quantity of cam cover and manufacturing man-hours number increase, cannot avoid product cost to rise significantly.
Summary of the invention
The present invention completes in view of such background just, its object is to the mounting structure of the oil level gage providing a kind of sealed department damage preventing oil level gage from inserting in the hole.
In a first aspect of the present invention, the mounting structure of oil level gage is the structure of installing oil level gage 21 in the oil level gage patchhole 15 of internal-combustion engine 1, and wherein, described oil level gage comprises: oil level gage main body 22, and described oil level gage main body is using metal as raw material, pasta detection unit 24, described pasta detection unit is using resin as raw material and be formed at the end side of described oil level gage main body, handle 23, described handle is formed at the terminal side of described oil level gage main body, and has columned insertion part 34, and the elastomer seal 25 of ring-type, described insertion part is embedded in outside the elastomer seal of described ring-type, described oil level gage patchhole by arranging introduction part 41 continuously successively from open end side, sealed department 42 and diameter reducing part 43 and form, the internal diameter of described introduction part is set larger than the external diameter of described elastomer seal, described elastomer seal is crimped on the inner circumferential of described sealed department, the internal diameter of described diameter reducing part is set less than the internal diameter of described sealed department, described sealed department is positioned at the conical surface St position in the outer part than depicting by linking the peristome 41a of described introduction part and the inner edge 43a of described diameter reducing part.
In addition, in second aspect, the end chamfering 44 by described introduction part side of described sealed department.
In addition, in a third aspect, the bottom of described diameter reducing part becomes towards the expanding conical surface 47 of the direction of insertion of described oil level gage main body.
In addition, in fourth aspect, under the state that the end of described pasta detection unit is positioned at described diameter reducing part, the end of the described handle side by described oil level gage of this pasta detection unit is positioned at the position more leaning on this introduction part side than the end by described introduction part side of described sealed department.
In addition, in the 5th, described handle has covering part 32 above described insertion part, and described covering part covers the opening end of described oil level gage patchhole.
In addition, in the 6th, described oil level gage patchhole is integrally formed in resinous engine hood 6.
According to a first aspect of the invention, relative to oil level gage patchhole insert and when extracting oil level gage, oil level gage main body not easily touches sealed department, inhibits the damage of sealed department.In addition, according to second aspect, when insertion part being inserted in oil level gage patchhole, elastomer seal is guided by chamfering and enters into sealed department, inhibits the damage of elastomer seal.In addition, according to the third aspect, wiping the machine oil in oil level gage main body and the attachment of pasta detection unit when being extracted by oil level gage away by the conical surface, therefore inhibit the deterioration of the elastomer seal caused by the machine oil flowing into sealed department.In addition, machine oil is easily back to oil sump etc. by becoming along conical surface flowing.In addition, according to fourth aspect, relative to oil level gage patchhole insert and when extracting oil level gage, oil level gage main body not easily touches sealed department, more effectively inhibits the damage of sealed department.In addition, according to the 5th aspect, even if the top making the elastomer seal in insertion part assemble position in order to the raising that realizes update and lightweight attenuates, foreign matter also can be suppressed to enter in motor from oil level gage patchhole.In addition, according to the 6th aspect, oil level gage patchhole can easily be formed by molding and forming.
Accompanying drawing explanation
Fig. 1 is the plan view of the motor that mode of execution relates to.
Fig. 2 is the II portion enlarged view in Fig. 1.
Fig. 3 is the plan view of the oil level gage that mode of execution relates to.
Fig. 4 is the longitudinal section of the oil level gage holding part that mode of execution relates to.
Fig. 5 is the figure of the effect that mode of execution is shown.
Fig. 6 is the figure of the effect that mode of execution is shown.
Label declaration:
1: motor;
6: valve mechanism cover (engine hood);
11: oil level gage holding part;
12 ~ 14: measuring hole (ゲ mono-ジ hole);
15: oil level gage patchhole;
21: oil level gage;
22: oil level gage main body;
23: handle;
24: pasta detection unit;
25:O type circle (elastomer seal);
32: lip part (covering part);
34: insertion part;
41: introduction part;
41a: peristome;
42: sealed department;
43: diameter reducing part;
43a: inner edge;
44: chamfering;
46,47: the conical surface;
St: the conical surface.
Embodiment
Below, a mode of execution of the mounting structure of the oil level gage applied the present invention in motor car engine is explained with reference to accompanying drawing.In addition, in the explanation of mode of execution, with the left side in Fig. 1 for a left side, with paper nearby side be front.
The structure > of < mode of execution
Motor 1 shown in Fig. 1 is in-line four cylinder four-cycle diesel engine, and this motor 1 is made up of cylinder block 2, lower body 3, cylinder head 4, oil sump 5, valve mechanism cover 6 etc.Be provided with oil level gage holding part 11 in valve mechanism cover 6, on the other hand, run through in the right front portion of cylinder block 2, lower body 3 and cylinder head 4 and be provided with measuring hole 12 ~ 14.Also as shown in Figure 2, oil level gage 21 inserts from the oil level gage patchhole 15 being formed at oil level gage holding part 11, and the machine oil that impregnated in oil sump 5 through measuring hole 12 ~ 14.
(oil level gage)
As shown in Figure 3, oil level gage 21 is made up of following parts: oil level gage main body 22, its with thinner steel plate (such as Steel Spring Plate) for raw material; The handle 23 of resin injection molding product, it is fixedly connected on the upper end of oil level gage main body 22; Resinous pasta detection unit 24, the portion integral of itself and oil level gage main body 22; And as a pair O sealed type circle 25 of elastomer seal, it is assemblied in handle 23.
Handle 23 is made up of following part: annulus 31, and it is for Inspection person lodge finger; Discoid lip part 32, it is formed at the below of annulus 31; The axle portion 33 that diameter is smaller, it extends downward from the lower surface of lip part 32; And the insertion part 34 that diameter is larger, it extends downward from the lower end in axle portion 33.Be formed with the annular slot 35 of upper and lower a pair in insertion part 34, in these annular slots 35, keep O type circle 25.Insertion part 34 is formed as having the cylindric of certain outer diameter D i, and, be formed with tapering 34a in order to easily be inserted in oil level gage patchhole 15 in the underpart of this insertion part 34.Further, O type circle 25, by being embedded in annular slot 35 outward and expanding, makes the outer diameter D o of O type circle 25 larger than free diameter.
Pasta detection unit 24 is shaping and integrated with the periphery of oil level gage main body 22 by embedding molded (insert mold), and this pasta detection unit 24 has length L1 along the length direction of oil level gage main body 22.
(oil level gage holding part)
As shown in Figure 4, valve mechanism cover 6 is the injection-molded articles of the resin being integrally formed with oil level gage holding part 11.The projecting top in valve mechanism cover 6 of oil level gage holding part 11, is formed with oil level gage patchhole 15 at the center of oil level gage holding part 11.Oil level gage patchhole 15 is formed in the mode arranging introduction part 41, sealed department 42 and diameter reducing part 43 from open end side successively continuously.
The internal diameter D1 that introduction part 41 is set to peristome 41a is larger than the outer diameter D o (with reference to figure 3) of O type circle 25, and this introduction part 41 is formed as the taper of the undergauge gradually towards sealed department 42 side.Further, sealed department 42 is formed as the parallel hole of surface smoothing, and sealing portion 42 is set to: internal diameter D2 is larger and less than the outer diameter D o of O type circle 25 than the outer diameter D i (with reference to figure 3) of insertion part 34.In addition, be provided with chamfering 44 between introduction part 41 and sealed department 42, this chamfering 44 makes introduction part 41 and sealed department 42 gently continuous.On the other hand, diameter reducing part 43 triangular cross-sectional configuration that central authorities are retracted in above-below direction, and specially the internal diameter D3 of minimum central part (inner edge 43a) is set as less than the internal diameter D2 of sealed department 42, the conical surface that top and the bottom are formed as upward or below is expanding 46,47 of this diameter reducing part 43.And then sealed department 42 is positioned at than conical surface St position in the outer part, described conical surface St is the face depicted by linking the peristome 41a of the introduction part 41 and inner edge 43a of diameter reducing part 43.In this case, specially the distance L2 between the peristome 41a of the introduction part 41 and inner edge 43a of diameter reducing part 43 is set as that the length L1 of the pasta detection unit 24 than oil level gage 21 is short.
The effect > of < mode of execution
Inspection person when confirm engine oil level, by finger hooking in the annulus 31 of handle 23, from the oil level gage patchhole 15 drawing oil bit table 21 of valve mechanism cover 6.Now, if oil level gage main body 22 tilt state under drawing oil level gage 21, as shown in Figure 5, oil level gage main body 22 cannot be avoided to contact with the inner circumferential of oil level gage patchhole 15.
But, in the present embodiment, as described above, sealed department 42 is positioned at the conical surface St position in the outer part than depicting by linking the peristome 41a of the introduction part 41 and inner edge 43a of diameter reducing part 43, even therefore under the state of oil level gage main body 22 closest to the inner circumferential of oil level gage patchhole 15 (even under the state both contacted at oil level gage main body 22 and the peristome 41a of introduction part 41 and the inner edge 43a of diameter reducing part 43), also guarantee there is gap c between oil level gage main body 22 and sealed department 42.Thus, even if be damaged to the peristome 41a of the introduction part 41 and inner edge 43a of diameter reducing part 43 sometimes, but the sealed department 42 also no longer damaged because of the edge of oil level gage main body 22, thus the impaired situation of tightness between sealing portion 42 and the O type circle 25 contacted with the inner peripheral surface in sealing portion 42 not easily occurs, or cause owing to contacting with sealed department 42 situation that O type circle 25 damages.
On the other hand, when drawing oil bit table 21, the machine oil being attached to oil level gage main body 22 and pasta detection unit 24 drips in oil level gage patchhole 15, but this machine oil is by being wiped away by diameter reducing part 43 and not easily flowing into sealed department 42 and introduction part 41.Thus, restrained effectively by the deterioration and swelling with the O type circle 25 caused by the contact of machine oil, what can maintain between oil level gage patchhole 15 and oil level gage 21 for a long time is airtight.Further, the machine oil being attached to diameter reducing part 43 drops in measuring hole 12 ~ 14 by flowing through the conical surface 46,47, thus is promptly got rid of from oil level gage patchhole 15.
On the other hand, oil level gage 21, after end is to the confirmation of engine oil level, is inserted in measuring hole 12 ~ 14 from oil level gage patchhole 15 by Inspection person.Now, inserted by oil level gage 21 under the state that pasta detection unit 24 tilts, pasta detection unit 24 contacts with the inner circumferential of oil level gage patchhole 15.
But, in the present embodiment, due to pasta detection unit 24 for resin is made, therefore, even if the end contact of pasta detection unit 24 also can not to make sealed department 42 that damage or wearing and tearing occur substantially.And, as mentioned above, because the length L1 of the pasta detection unit 24 of oil level gage 21 is longer than the distance L2 between the peristome 41a of introduction part 41 and the inner edge 43a of diameter reducing part 43, therefore, as shown in Figure 6, even if when pasta detection unit 24 is inserted into a certain degree, oil level gage main body 22 also can not contact with sealed department 42.Further, owing to being provided with chamfering 44 between introduction part 41 and sealed department 42, therefore, when being inserted to sealed department 42 insertion part 34, O type circle 25 enters into sealed department 42 swimmingly.And then, as shown in Figure 2, when insertion part 34 is inserted in oil level gage patchhole 15 completely, lip part 32 covers the upper end of oil level gage holding part 11 completely, even if there is larger gap between oil level gage patchhole 15 (introduction part 41) and the axle portion 33 of handle 23, also can prevent dust etc. from entering into oil level gage patchhole 15.
More than complete the explanation to concrete mode of execution, but form of the present invention is not limited to these mode of executions.Such as, in the above-described embodiment, have employed with steel plate is raw-material oil level gage main body, but also can adopt oil level gage main body steel wire being rolled into coiled type.In addition, in the above-described embodiment oil level gage patchhole is formed at resinous valve mechanism cover, but oil level gage patchhole also can be formed at aluminum alloy is raw-material valve mechanism cover, can also be formed at other motor composed component (cylinder head, cylinder block etc.).In addition, for concrete structure and shape, the raw material etc. of oil level gage and oil level gage holding part, also can suitably set without departing from the spirit and scope of the invention.
Claims (4)
1. a mounting structure for oil level gage, the mounting structure of described oil level gage is insert in the hole at the oil level gage of internal-combustion engine to install the structure of oil level gage, and the feature of the mounting structure of this oil level gage is,
Described oil level gage comprises:
Oil level gage main body, described oil level gage main body is using metal as raw material;
Pasta detection unit, described pasta detection unit is using resin as raw material and be formed at the end side of described oil level gage main body;
Handle, described handle is formed at the terminal side of described oil level gage main body, and has columned insertion part; And
The elastomer seal of ring-type, is embedded in described insertion part outside the elastomer seal of described ring-type,
Described oil level gage patchhole is formed by arranging introduction part, sealed department and diameter reducing part continuously successively from open end side, the internal diameter of described introduction part is set larger than the external diameter of described elastomer seal, described elastomer seal is crimped on the inner circumferential of described sealed department, the internal diameter of described diameter reducing part is set less than the internal diameter of described sealed department
Described introduction part to be formed as towards described sealed part side undergauge gradually,
The internal diameter of described sealed department is set to, larger and less than the external diameter of described elastomer seal than the external diameter of the insertion part of described oil level gage,
Described diameter reducing part is the triangular cross-sectional configuration that above-below direction central part is retracted, and the bottom of described diameter reducing part becomes towards the expanding conical surface of direction of insertion,
Described sealed department is positioned at the conical surface position in the outer part than being depicted by the link peristome of described introduction part and the inner edge of described diameter reducing part,
Under the state that the end of described pasta detection unit is positioned at described diameter reducing part, the end of the described handle side by described oil level gage of this pasta detection unit is positioned at the position more leaning on this introduction part side than the end by described introduction part side of described sealed department.
2. the mounting structure of oil level gage according to claim 1, is characterized in that,
The end chamfering by described introduction part side of described sealed department.
3. the mounting structure of oil level gage according to claim 1, is characterized in that,
Described handle has covering part above described insertion part, and described covering part covers the opening end of described oil level gage patchhole.
4. the mounting structure of oil level gage according to claim 2, is characterized in that, described oil level gage patchhole is formed at resinous engine hood.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011096773A JP5271379B2 (en) | 2011-04-25 | 2011-04-25 | Oil level gauge mounting structure |
| JP2011-096773 | 2011-04-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102758664A CN102758664A (en) | 2012-10-31 |
| CN102758664B true CN102758664B (en) | 2015-05-20 |
Family
ID=47053278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210125099.9A Active CN102758664B (en) | 2011-04-25 | 2012-04-25 | Oil gauge installation structure |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5271379B2 (en) |
| CN (1) | CN102758664B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6188565B2 (en) * | 2013-12-20 | 2017-08-30 | 株式会社マーレ フィルターシステムズ | Oil level gauge insertion part structure |
| JP5952865B2 (en) * | 2014-07-03 | 2016-07-13 | 本田技研工業株式会社 | Oil level gauge assembly structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2742151Y (en) * | 2004-09-30 | 2005-11-23 | 长安汽车（集团）有限责任公司 | Resistance type engine machine oil level rule |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54163244U (en) * | 1978-05-06 | 1979-11-15 | ||
| JPH048339Y2 (en) * | 1985-05-04 | 1992-03-03 | ||
| JPH06566Y2 (en) * | 1987-06-24 | 1994-01-05 | 日産自動車株式会社 | Oil level gauge support structure |
| JP4145079B2 (en) * | 2002-06-18 | 2008-09-03 | 本田技研工業株式会社 | Oil level gauge mounting structure |
| JP2004036437A (en) * | 2002-07-02 | 2004-02-05 | Kubota Corp | Oil level detector for engine |
| JP4614926B2 (en) * | 2006-08-02 | 2011-01-19 | 本田技研工業株式会社 | Oil injection structure for internal combustion engine |
| JP2009075051A (en) * | 2007-09-25 | 2009-04-09 | Ohashi Tekko Kk | Composite component integrated with metal band plate, and its manufacturing method |
-
2011
- 2011-04-25 JP JP2011096773A patent/JP5271379B2/en not_active Expired - Fee Related
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2012
- 2012-04-25 CN CN201210125099.9A patent/CN102758664B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2742151Y (en) * | 2004-09-30 | 2005-11-23 | 长安汽车（集团）有限责任公司 | Resistance type engine machine oil level rule |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5271379B2 (en) | 2013-08-21 |
| CN102758664A (en) | 2012-10-31 |
| JP2012229625A (en) | 2012-11-22 |
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