JP2006189001A - Oil level gauge device of engine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oil level gauge device of an engine, by surely preventing disturbance of oil sticking to a gauge surface, when the gauge surface contacts with a wall surface of an oil return passage, and when the oil sticking to its wall surface sticks to the gauge surface, in a process of inserting and extracting a gauge body into and from its oil return passage, by using the oil return passage of the engine. <P>SOLUTION: A gauge main part 25 of the gage body 21 has the gauge surface 30 having oil level reference marks 31 and 32, a tip side guide inclined part 33 capable of guiding the gauge main part 25 to the wall surface of the oil return passage when lowering the gauge main part 25, a base end side guide inclined part 34 capable of guiding the gauge main part 25 to the wall surface of the oil return passage when lifting the gauger main part 15, and a pair of guard wall parts 35 arranged in both end parts in the width direction of the gauge surface 30 and projecting to the gauge surface side in the plane orthogonal direction of the gauge surface 30. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an oil level gauge device for checking the amount of oil for lubricating an engine.

  Conventionally, in order to check the amount of lubricating oil that is consumed little by little in an engine such as an automobile, a gauge insertion pipe leading to the engine oil pan is arranged on the side of the engine. An oil level gauge device in which a gauge body is inserted into a gauge insertion tube has been put into practical use (see, for example, Patent Document 1). In this oil level gauge device, once the gauge body is pulled out of the gauge insertion tube, the oil adhering to the gauge surface at the tip of the gauge body is wiped off, and then the gauge body is inserted into the gauge insertion tube to remove oil from the gauge surface. The oil in the pan is allowed to adhere, and then the gauge body is pulled out of the gauge insertion tube to check the level of oil adhering to the gauge surface.

  However, this type of external type oil level gauge device requires a space for arranging a gauge insertion pipe around the engine, and the number of parts including the gauge insertion pipe increases, resulting in an increase in cost. . Therefore, an oil return passage is formed in the engine body (cylinder head and cylinder block) in which the gauge insertion pipe is omitted and oil used for lubricating the valve train of the engine flows down to the oil pan. An oil level gauge device that can check the amount of oil by inserting a gauge main body into the oil return passage is used in practice (see, for example, Patent Document 2).

  Here, in the oil level gauge device, in order to reliably check the amount of oil, the gauge body is connected to the gauge insertion pipe (in the case of Patent Document 1) and the oil return passage (in the case of Patent Document 2). In the process of inserting and removing, the gauge surface contacts the part facing the gauge insertion space, so that the oil adhering to the part does not adhere to the gauge surface or the oil adhering to the gauge surface is not disturbed. It is important to. In the case of a gauge insertion tube, the gauge surface is unlikely to contact the inner surface of the gauge insertion tube due to the configuration of the gauge insertion tube and the gauge body.

JP 2002-106317 A Japanese Patent Laid-Open No. 2004-270510

  When the oil level gauge device is configured using the oil return passage of the engine as in Patent Document 2, the oil return passage is thickened and formed linearly in order to improve engine performance and make it compact. In many cases, it is disadvantageous. In other words, when priority is given to improving engine performance and downsizing, the oil return passage is relatively thin, and the walls are often non-linear and uneven, so the gauge body is inserted into and removed from the oil return passage. In the process, the gauge surface comes into contact with the wall surface of the oil return passage, and the oil attached to the wall surface adheres to the gauge surface or the oil attached to the gauge surface is disturbed.

In addition, there is a possibility that the tip of the gauge body having the gauge surface is caught on the wall surface of the oil return passage, and the gauge body cannot be smoothly inserted into and removed from the oil return passage. Therefore, it is difficult to reliably and smoothly check the amount of oil.
The object of the present invention is to use the oil return passage of the engine, in particular, in the process of inserting / removing the gauge body into / from the oil return passage, the gauge surface comes into contact with the wall surface of the oil return passage, and the oil adhered to the wall surface Prevents the oil adhering to the gauge surface or the oil adhering to the gauge surface from being disturbed, and smoothly inserting / removing the gauge body into / from the oil return passage to ensure a smooth oil amount. It is to provide an oil level gauge device for an engine that can be checked.

  The oil level gauge device for an engine according to claim 1 is inserted into an oil return passage formed in the engine body of the engine, and the oil level of the engine provided with a gauge body whose tip can be inserted into the oil in the oil pan. In the gauge device, the gauge body includes a handle portion, a support portion supported by the engine body, a flexible gauge rod extending from the support portion, and a gauge main portion provided at a tip portion of the gauge rod. The gauge main part has an oil level reference mark indicating the upper and lower limits of the oil level, and the gauge surface to which the oil adheres is provided, and when the gauge main part is lowered and provided on the tip side of the gauge surface The tip side guide inclined part that can guide the gauge main part to the wall surface of the oil return passage and the base side of the gauge surface and raise the gauge main part And a base-side guide inclined portion capable of guiding the gauge main portion with respect to the wall surface of the oil return passage, and a guard provided at both ends in the width direction of the gauge surface and protruding in the direction perpendicular to the gauge surface and toward the gauge surface side And a wall portion.

  In this oil level gauge device, the gauge body includes a handle portion, a support portion, a gauge rod, and a gauge main portion. The gauge rod and the gauge main portion are inserted into the oil return passage, and the support portion is supported by the engine body. Then, the gauge main part enters the oil in the oil pan. When checking the amount of oil, hold the handle, pull out the gauge main part from the oil return passage, wipe off the oil adhering to the gauge surface of the gauge main part, and then place the gauge main part in the oil return passage. By inserting it into the oil pan, it will rush into the oil in the oil pan, and then pull out the gauge main part from the oil return passage to see the level of oil adhering to the gauge surface and use the oil reference mark on the gauge surface as a reference. Can be checked.

  The gauge main part has a gauge surface, a tip guide inclined part, a proximal guide inclined part, and a guard wall part. Especially, even when the oil return passage is non-linear and the wall surface is uneven. When the main part is lowered and inserted into the oil return passage, the guide main part can be guided with respect to the wall surface of the oil return passage by the tip-side guide inclined part, and the gauge main part is raised to return the oil return. When pulling out from the passage, the gauge main part can be guided with respect to the wall surface of the oil return passage by the proximal end guide inclined portion, and the gauge rod is flexible, so the oil return The gauge body (gauge main part) is smoothly inserted into and removed from the passage. Furthermore, since the gauge surface is guarded by the guard wall, the gauge surface comes into contact with the wall surface of the oil return passage, and the oil adhered to the wall surface adheres to the gauge surface or the oil adhered to the gauge surface. It is surely prevented from being disturbed.

In the invention of claim 1, the following configuration can be adopted.
Each of the distal end side guide inclined portion and the proximal end side guide inclined portion has a conical tapered portion projecting outward from the guard wall portion of the gauge main portion in the direction perpendicular to the plane of the gauge surface. The gauge main part has an inclined part provided between the gauge surface and the proximal guide inclined part and capable of guiding the gauge main part against the wall surface of the oil return passage when the gauge main part is lowered ( Claim 3). The gauge main part is molded by casting in a state where the tip part of the gauge rod is cast. The gauge bar is formed of a twisted wire (Claim 5).

  According to the oil level gauge device for an engine of the first aspect, particularly when the oil return passage is non-linear and the wall surface is uneven, the main gauge portion is lowered and inserted into the oil return passage. Further, the gauge main part can be guided with respect to the wall surface of the oil return passage by the tip side guide inclined part, and when the gauge main part is raised and pulled out from the oil return path, the base side guide inclined part can Since the gauge main part can be guided with respect to the wall of the return passage, and the gauge rod is flexible, the oil return should be made so that the gauge main part does not get caught on the wall of the oil return passage. The gauge body (gauge main part) can be smoothly inserted and removed from the passage, and the gauge surface can be guarded by the guard wall. Can be reliably prevented from coming into contact with the wall surface of the oil return passage and the oil adhering to the wall surface from adhering to the gauge surface, or from being disturbed by the oil adhering to the gauge surface. By using the oil return passage formed in, the amount of oil for engine lubrication can be reliably and smoothly checked.

  According to the engine oil level gauge device of claim 2, the tip side guide inclined portion and the base end side guide inclined portion each have a cone projecting outward from the guard wall portion of the gauge main portion in the direction perpendicular to the surface of the gauge surface. Therefore, it is possible to enhance the guide function by the distal end side guide inclined portion and the proximal end side guide inclined portion, and more reliably prevent the gauge surface from contacting the wall surface of the oil return passage.

  According to the oil level gauge device for an engine of claim 3, the gauge main portion is provided between the gauge surface and the proximal guide inclined portion, and the wall of the oil return passage is lowered when the gauge main portion is lowered. Therefore, when lowering the gauge main part, make sure that the gauge main part does not get caught on the wall of the oil return path, so that the gauge main body is connected to the oil return path. It can be inserted and removed smoothly, and even if the inclined part contacts the wall surface of the oil return passage, the oil attached to the wall surface of the oil return passage is scratched by the inclined portion and the oil adheres to the gauge surface. Can be prevented.

  According to the oil level gauge device for an engine of claim 4, since the gauge main part is formed by casting in a state where the tip part of the gauge rod is cast, the gauge body can be manufactured easily and inexpensively. can do.

  According to the oil level gauge device for an engine of claim 5, since the gauge rod is composed of a twisted wire, it is possible to prevent movement of the gauge main part when the gauge body is inserted into and removed from the oil return passage. A flexible gauge rod can be bent freely, but the strength of this gauge rod can be increased, and the gauge rod can be twisted to ensure that the oil does not obstruct the movement of the gauge main part more securely. The gauge body can be smoothly inserted and removed from the return passage.

  The oil level gauge device of the present invention uses an oil return passage formed in an engine body in an automobile engine, and inserts the gauge body into the oil return passage to check the amount of oil for engine lubrication. In particular, in the gauge main part at the distal end of the gauge body, guide inclined parts are provided on the distal end side and proximal end side of the gauge surface having the oil level reference mark, and guards are provided at both ends in the width direction of the gauge surface. A wall is provided.

  As shown in FIG. 1, the engine 1 has an engine body 2 having a cylinder head 3 and a cylinder block 4, a cylinder head cover 5 is attached to the cylinder head 3, and an oil pan 6 is attached to the cylinder block 4. . A cylinder liner 7 is provided in the cylinder block 4, and a water jacket 8 and an oil gallery 9 are provided in the cylinder head 3 and the cinder block 4. A crankshaft 10 is provided below the cinder block 4, and an intake camshaft 11 and an exhaust camshaft 12 are provided inside the cylinder head cover 5 of the cylinder head 3.

  A plurality of upright oil return passages 13 and 14 are formed in the engine body 2 (the cylinder head 3 and the cinder block 4). The oil return passages 13 and 14 are passages through which the oil 15 used for lubricating the valve train of the engine 1 flows down to the oil pan 6. The oil return passages 13 and 14 are relatively thin and non-linear and the wall surfaces 13 a and 14 a are The shape is uneven, and the existing shape is given priority to the performance improvement and downsizing of the engine 1. The oil level gauge device 20 (hereinafter referred to as the oil level gauge device 20) of the engine of the present invention is configured using one of the oil return passages 13 among them.

The oil level gauge device 20 will be described.
As shown in FIGS. 1 to 9, the oil level gauge device 20 is inserted into the oil return passage 13 and the oil return passage 13, and the tip (gauge main portion 25) is placed in the oil 15 in the oil pan 6. A gauge body 21 that can be inserted, and the gauge body 21 is provided at a handle portion 22, a support portion 23 supported by the engine body 2, a support rod 24 extending from the support portion 23, and a distal end portion of the support rod 24. And a gauge main portion 25 provided.

  The handle portion 22 is provided at the base end portion of the gauge body 21 and is formed in a ring shape, the support portion 23 is provided on the distal end side of the handle portion 22 continuously with the handle portion 22, and the gauge rod 24 is a twisted wire. Constructed and flexible. With the handle portion 22, the gauge body 21 can be inserted into and removed from the oil return passage 13, the gauge rod 24 and the gauge main portion 25 are inserted into the oil return passage 13, and the support portion 23 is supported by the engine body 2. Thus, the gauge main portion 25 enters the oil 15 in the oil pan 6.

  Here, the support portion 23 includes a shaft portion 23a and a flange portion 23b. The shaft portion 23a is fitted into a cylindrical insertion portion 16 formed in the cylinder head cover 5, and the flange portion 23b is an upper end of the insertion portion 16. It abuts on the part and is supported. Further, a V-shaped cutout portion 23c is formed in the collar portion 23b, and the gauge main portion 25 is in a state in which the cutout portion 23c is engaged with the V-shaped positioning projection 17 formed in the cylinder head cover 5. The gauge surface 30 is oriented in a predetermined direction.

  When checking the amount of oil 15, hold the handle 22, pull out the gauge main part 25 from the oil return passage 13, wipe off the oil 15 adhering to the gauge surface 30 of the gauge main part 25, and By inserting the main portion 25 into the oil return passage 13 to enter the oil 15 in the oil pan 6, and subsequently pulling out the gauge main portion 25 from the oil return passage 13, the oil 15 adhered to the gauge surface 30. The oil level marks 31 and 32 on the gauge surface 30 are checked as a reference.

  As shown in FIGS. 6 to 9, the gauge main portion 25 includes a gauge surface 30, a distal-side guide inclined portion 33, a proximal-side guide inclined portion 34, a pair of guard wall portions 35, a proximal-side inclined portion 36, It has a tip side inclined portion 37 and a partial cylindrical guide portion 38. The gauge surface 30 is formed in a surface that is elongated in the length direction of the gauge rod 24 and faces in a direction orthogonal to the length direction, and has two oil level reference marks 31 and 32 that indicate the upper and lower limits of the oil level.

  The distal end side guide inclined portion 33 is provided on the distal end side of the gauge surface 30 (the distal end portion of the gauge main portion 25), and the gauge main portion 25 with respect to the wall surface 13a of the oil return passage 13 when the gauge main portion 25 is lowered. The base end side guide inclined portion 34 is provided on the base end side of the gauge surface 30 (base end portion of the gauge main portion 25), and oil return is performed when the gauge main portion 25 is raised. It has a function capable of guiding the gauge main portion 25 with respect to the wall surface 13 a of the passage 13.

  The pair of guard wall portions 35 are provided at both ends in the width direction of the gauge surface 30 so as to protrude at least over the entire length of the gauge surface 30 and in the direction perpendicular to the surface of the gauge surface 30 and toward the gauge surface 30. When the gauge main part 25 is raised and lowered, it has a function of guarding the gauge surface 30 so as not to contact the wall surface 13a of the oil return passage 13. The outer surface shape of the pair of guard wall portions 35 is formed in an arc shape in cross section, and the inner surface shape is formed in an inclined shape so that the distance between the pair of guard wall portions 35 increases as the distance from the gauge surface 30 increases. Yes. The distal end side guide inclined portion 33 and the proximal end side guide inclined portion 34 respectively have conical tapered portions 33a and 34a projecting outward from the guard wall portion 35 of the gauge main portion 25 in the direction perpendicular to the plane of the gauge surface 30. . The tapered portion 33a is reduced in diameter toward the distal end side, and the tapered portion 34a is reduced in diameter toward the proximal end side.

  The base end side inclined portion 36 is provided between the gauge surface 30 and the base end side guide inclined portion 34, and when the gauge main portion 25 is lowered, the base end side inclined portion 36 is attached to the wall surface 13 a of the oil return passage 13. Has a guideable function. The proximal-side inclined portion 36 is formed so as to rise from the gauge surface 30 toward the proximal-side guide inclined portion 34, and has a relatively gentle gradient with respect to the length direction of the gauge main portion 25. The base end inclined portion 36 is connected to the maximum projecting portion of the base end guide inclined portion 34, and the distal end of the base end inclined portion 36 is connected to the gauge surface 30. The distal end portion of the gauge rod 24 is connected to the proximal-side guide inclined portion 34 (further, the proximal-side inclined portion 36) in an inner fitting shape. Here, the gauge main part 25 is formed by casting in a state in which the tip part of the gauge rod 24 is cast, for example, with a zinc material.

  The front end side inclined portion 37 is provided between the gauge surface 30 and the front end side guide inclined portion 33, and is formed so as to rise from the gauge surface 30 toward the front end side guide inclined portion 33. The inclined surface has a relatively steep slope with respect to the length direction. Therefore, the tip side inclined portion 37 also has a function capable of guiding the gauge main portion 25 with respect to the wall surface 13a of the oil return passage 13 when the gauge main portion 25 is lowered. Since the tip side inclined portion 37 can be shortened in the vertical direction, it is advantageous in securing the necessary length of the gauge surface 30 and shortening the length of the gauge main portion 25. Note that both end portions in the length direction of the pair of guard wall portions 35 are connected to the proximal-side inclined portion 36 and the distal-end-side inclined portion 37.

  The partial cylindrical guide portion 38 has a cross section including the outer surface portion of the pair of guard wall portions 35 in the portion between the distal end side guide inclined portion 33 and the proximal end side guide inclined portion 34 in the gauge main portion 15. Thus, it is formed of a portion having a substantially arcuate outer surface and has a function capable of guiding the gauge main portion 25 against the wall surface 13a of the oil return passage 13 when the gauge main portion 25 is raised and lowered.

The oil level gauge device 20 described above has the following effects.
When the gauge main portion 25 is lowered and inserted into the oil return passage 13, the distal end guide inclined portion 33 and the proximal end inclined portion 36 guide the gauge main portion 25 against the wall surface 13 a of the oil return passage 13. When the gauge main part 25 is raised and pulled out from the oil return passage 13, the gauge main part 25 can be guided to the wall surface 13a of the oil return passage 13 by the proximal end guide inclined part 34. Furthermore, the tip side inclined portion 37 and the partial cylindrical guide portion 38 also have a guide function, and the gauge rod 24 is flexible.

  Therefore, the gauge main body 25 (the gauge main portion 25) can be smoothly inserted and removed from the oil return passage 13 without fail so that the gauge main portion 25 is caught on the wall surface 13a of the oil return passage 13. Since the gauge surface 30 can be guarded by the pair of guard wall portions 35, the gauge surface 30 contacts the wall surface 13a of the oil return passage 13, and the oil 15 attached to the wall surface 13a adheres to the gauge surface 30, The oil 15 adhering to the surface 30 can be reliably prevented from being disturbed, and even when the base-side inclined portion 36 comes into contact with the wall surface 13a of the oil return passage 13, the base-end inclined portion 36 can The oil 15 adhering to the wall surface 13a of the return passage 13 can be scratched to prevent the oil 15 from adhering to the gauge surface 30, and as a result, Engine by utilizing the oil return passage 13 formed in the body 2, can be reliably and smoothly check the amount of oil 15 for lubricating the engine 1.

  The distal-end-side guide inclined portion 33 and the proximal-side guide inclined portion 34 each have a conical tapered portion 33a projecting outward from the pair of guard wall portions 35 of the gauge main portion 25 in the direction perpendicular to the plane of the gauge surface 30. 34a, the guide function by the distal end side guide inclined portion 33 and the proximal end side guide inclined portion 34 is enhanced, and the gauge surface 25 can be more reliably prevented from contacting the wall surface 13a of the oil return passage 13. it can.

  Since the gauge main portion 25 is formed by casting in a state where the tip end portion of the gauge rod 24 is cast, the gauge body 21 can be manufactured easily and inexpensively. Since the gauge rod 24 is composed of a twisted wire, the flexible gauge rod 24 can be freely attached so as not to hinder the movement of the gauge main portion 25 when the gauge body 21 is inserted into and removed from the oil return passage 13. The gauge rod 24 can be bent, but the strength of the gauge rod 24 is increased, and the torsion of the gauge rod 24 is allowed. The main body 21 can be inserted and removed smoothly.

  Here, as shown in FIG. 1, a bolt 18 having an oil 15 circulation pump (not shown) attached to the lower portion of the engine 1 protrudes into the oil return passage 13, and the gauge main portion 25 is connected to the bolt 18. Although there is a possibility of contact, as described above, the gauge main portion 25 is further provided by the guide functions of the distal end side guide inclined portion 33, the proximal end side guide inclined portion 34, the proximal end side inclined portion 36, and the distal end side inclined portion 37. When the notch portion 23c of the support portion 23 is engaged with the protrusion portion 17 so that the gauge surface 30 is easily directed to the opposite side of the gauge main portion 25 when passing through the vicinity of the bolt 18, It is possible to reliably prevent the gauge main portion 25 from being caught by the bolt 18 by making the gauge surface 30 face the predetermined direction.

Next, a modified embodiment in which the above embodiment is partially modified will be described.
1] As shown in FIGS. 10 and 11, the main gauge portion 25A includes a gauge surface 30 having oil level reference marks 31 and 32, a distal-side guide inclined portion 33, a proximal-side guide inclined portion 34, and a pair of guards. It has a wall portion 35, a base end side inclined portion 36A, a front end side inclined portion 37A, and a partial cylindrical guide portion 38, and basically the gauge main portion 25 except for the base end side inclined portion 36A and the front end side inclined portion 37A. The description is omitted because it is similar.

  The proximal-side inclined portion 36A is provided between the gauge surface 30 and the proximal-side guide inclined portion 34, and is formed so as to rise from the gauge surface 30 toward the proximal-side guide inclined portion 34. An inclined surface having a relatively gentle slope with respect to the length direction of the main portion 25A, and also inclined on both sides in the width direction of the gauge surface 30 with a center line in the length direction of the gauge main portion 25A as a boundary. Have The proximal-side inclined portion 36A has the same function as the proximal-side inclined portion 36, and further, when the gauge main portion 25 is inserted into the oil return passage 13, from the wall surface 13a to the proximal-side inclined portion. Even when the oil 15 adheres to 36 </ b> A, the oil 15 has a function of leading the outside to both sides in the width direction of the gauge surface 30.

  The tip side inclined portion 37A is provided between the gauge surface 30 and the tip side guide inclined portion 33, and is formed so as to rise from the gauge surface 30 toward the tip side guide inclined portion 33, and the gauge main portion 25A. The inclined surface has a relatively gentle gradient with respect to the length direction of the gauge surface 30 and is inclined to both sides in the width direction of the gauge surface 30 with the center line in the length direction of the gauge main portion 25A as a boundary. The tip side inclined portion 37A has the same function as the tip side inclined portion 37. Further, when the gauge main portion 25 is pulled out from the oil return passage 13, the oil 15 is supplied from the wall surface 13a to the tip side inclined portion 37A. Even if it adheres, it has the function of deriving the oil 15 to the outside on both sides of the gauge surface 30 in the width direction.

2] As shown in FIG. 12, the pair of guard walls 35B of the gauge main portion 25B is provided so as to protrude in the direction perpendicular to the gauge surface 30 and toward the gauge surface 30 side, and a pair of guard walls The inner surface shape of the portion 35B is formed to be perpendicular to the gauge surface 30 and the outer surface shape is formed in a curved shape connected to the outer surface of the partial cylindrical guide portion 38. The guard wall portion 35A has the same function as the guard wall portion 35A, and further increases the guard property for guarding the gauge surface 30, and ensures that the wall surface 13a of the oil return passage 13 contacts the gauge surface 30. Can be prevented.

3] The gauge rod 24 may be formed of a metal or a synthetic resin material on a simple and long rod-like member.
4] The distal end side guide inclined portion 33 and the proximal end side guide inclined portion 34 may be configured to have a spherical inclined portion at the distal end portion.

5] The guard walls 35 and 35A may be formed partially or intermittently in addition to being continuously formed over at least the entire length of the gauge surface 30.

6] Other than the above, the present invention can be implemented with modifications other than those disclosed above, and the oil level gauge device can be used in various engines other than automobiles and automobiles. The present invention can be applied.

It is sectional drawing of the engine which has the oil level gauge apparatus which concerns on an Example. It is a perspective view of the principal part of an engine and a gauge main part. It is a top view of the principal part of an engine and a gauge main part. It is a side view of a gauge main body. It is a front view of a gauge main body. It is a perspective view of a gauge main part. It is a side view of a gauge main part. It is a front view of a gauge main part. It is sectional drawing of a gauge main part. It is a side view of the gauge main part which concerns on a change form. It is a front view of the gauge main part which concerns on a change form. It is sectional drawing of the gauge main part which concerns on another modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Engine 2 Engine main body 6 Oil pan 13 Oil return passage 13a Wall surface 15 Oil 20 Oil level gauge apparatus 21 Gauge main body 22 Handle part 23 Support part 24 Gauge rod 25, 25A, 25B Gauge main part 30 Gauge surface 31, 32 Oil level reference | standard Mark 33 Tip side guide inclined part 33a Taper part 34 Base end side guide inclined part 34a Taper part 35, 35B Guard wall part 36, 36A Base end side inclined part 37, 37A Tip side inclined part

Claims (5)

In an oil level gauge device for an engine having a gauge body that can be inserted into an oil return passage formed in the engine body of the engine and the tip portion can enter the oil in the oil pan.
The gauge body includes a handle portion, a support portion supported by the engine body, a flexible gauge rod extending from the support portion, and a gauge main portion provided at a tip portion of the gauge rod,
The gage main part has an oil level reference mark indicating the upper and lower limits of the oil level, and a gage surface to which oil adheres, and an oil return passage provided on the tip side of the gage surface and when the gage main part is lowered The tip side guide inclined part that can guide the gauge main part against the wall surface of the gauge and the gauge main part that is provided on the proximal end side of the gauge surface and guides the gauge main part against the wall surface of the oil return passage when the gauge main part is raised Oil level of an engine having a possible base end side guide inclined portion and a guard wall portion provided at both end portions in the width direction of the gauge surface and projecting in the direction perpendicular to the gauge surface and toward the gauge surface side Gauge device.   The distal end side guide inclined portion and the proximal end side guide inclined portion each have a conical taper portion projecting outward from the guard wall portion of the gauge main portion in the direction perpendicular to the plane of the gauge surface. 1. An oil level gauge device for an engine according to 1.   The gauge main part has an inclined part provided between the gauge surface and the proximal guide inclined part and capable of guiding the gauge main part against the wall surface of the oil return passage when the gauge main part is lowered. The engine oil level gauge device according to claim 2.   The oil level gauge device for an engine according to any one of claims 1 to 3, wherein the gauge main portion is formed by casting in a state where a tip end portion of a gauge rod is cast.   The engine oil level gauge device according to any one of claims 1 to 4, wherein the gauge rod is formed of a twisted wire.

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