JP2009185677A - Oil-level oiling gage attachment structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oil-level oiling gage attachment structure enabling an oil-level stick bent in such a manner that the same can reach a horizontal oil level surface from an inclined inlet part to smoothly oil and inspect the oil when the oil-level oiling gage integrating an oiling pipe and an oil inspection part is provided at a side part of a cylinder block of an engine. <P>SOLUTION: The oil-level oiling gage includes a cylindrical outer guide pipe fixed to a side part attachment hole of a cylinder block having an oil passage formed inside thereof, an inlet member inserted in the outer guide pipe attachably and detachably under a liquid sealed condition, an inner oil supply pipe formed in a cylindrical shape and attached to a lower surface of the cylinder block attachably and detachably at a lower part thereof, and a bar shape oil-level stick fixed on the inlet member and communicating to an inside of the inner oil supply pipe through an inside of the outer guide pipe and made of material which can be bent and has elasticity. A gap of a fixed dimension is formed between an upper end part of the inner oil supply pipe and a lower end part of the outer guide pipe. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is applied to a general-purpose small engine, and an oil level oil gauge that integrates an oil supply pipe and an oil inspection part is installed on the side of a cylinder block of the engine so that the oil level oil gauge can be detached from the outside of the engine. The present invention relates to an oil level oil gauge installation structure.

  For the engine level oil gauge mounting structure of an engine that is configured in an inclined engine whose cylinder center is inclined at a predetermined angle with respect to a vertical line, for example, a technique disclosed in Patent Document 1 (Japanese Patent No. 36495412) is provided.

  In such a technique, in an inclined engine, an oil level refueling gauge is constituted by an upper member and a lower member, and the opening of the upper member has an oil seal having a diameter larger than that of the fitting hole coupled to the oil pipe. The oil pipe side is provided with a bolt hole in the flange portion located at the upper portion of the O-ring mounting portion, and a female screw is provided on the side of the opening facing the bolt hole. The lower part of the pipe is supported by being fitted to the opening of the crankcase cover and a boss provided at a position separated from the opening, and the outer periphery of the insertion part and the inner periphery of the oil pipe are sealed by an O-ring, A technique is disclosed in which an oil pipe inserted through the bolt hole is screwed onto the female screw and attached, and the oil pipe is firmly held at two locations.

Japanese Patent No. 3649512

  In the tilt engine shown in Patent Document 1 (Japanese Patent No. 36495412), since the cylinder is tilted with respect to the vertical line, the oil level oil gauge is horizontal with respect to the oil injection portion. For this reason, the oil inspection rod of the oil level oil supply gauge needs to bend in order to reach the horizontal oil surface from the inclined inlet.

  Accordingly, a guide tube for guiding the oil inspection rod is required. However, in Patent Document 1, the oil pipe is firmly held at two locations, that is, the oil pipe is firmly fixed at two locations. However, the oil inspection rod is fixed to the lower oil pipe and cannot be applied to the curved oil inspection rod as described above.

  In view of the problems of the prior art, the present invention can reach a horizontal oil surface from an inclined inlet when providing an oil level oil gauge integrated with an oil supply pipe and an oil inspection part on the side of an engine cylinder block. It is an object of the present invention to provide an oil level oil gauge mounting structure that enables smooth oil inspection and oil inspection of a curved oil inspection rod.

  The present invention achieves such an object, and an oil level oil gauge that integrates an oil supply pipe and an oil inspection part is installed on the side of a cylinder block of an engine so that the oil level oil gauge can be detached from the outside of the engine. In the attached oil level oil gauge mounting structure, the oil level oil gauge is fixed to the side mounting hole of the cylinder block and has a cylindrical outer guide pipe having an oil passage formed therein, and is attached to and detached from the outer guide pipe. An inlet member that is sealed in a fluid-tight and fluid-tight manner, an internal oil supply pipe that is formed in a cylindrical shape and is detachably attached to the lower surface of the cylinder block, and an inner guide pipe fixed to the inlet member A long oil inspection rod made of an elastic material that can be bent and deformed, and is inserted into the internal oil supply pipe through the internal oil supply pipe. A gap of a certain size is formed between the upper end portion and the lower end portion of the outer guide tube, and the inside of the outer guide tube is communicated with the cylinder block through the gap, and oil enters the cylinder block through the gap. Is also formed to be able to flow (claim 1).

In this invention, the following configuration is preferable.
(1) The gap is formed by inclining the upper end portion of the internal oil supply pipe so that the upper side of the engine is narrower than the lower side of the engine with respect to the center of the oil inspection rod (claim 2).
(2) The external guide tube is provided at a predetermined angle with respect to a vertical line, the internal oil supply tube is mounted bent in the vertical line direction from the installation direction of the external guide tube, and the oil inspection rod is mounted on the external line The inside of the internal oil supply pipe is bent from the inside of the guide pipe.

More preferably, it is configured as follows.
The engine is configured as an inclined engine in which a cylinder center is inclined at a predetermined angle with respect to a vertical line, and the centers of the outer guide pipe and the inlet member are installed in a direction parallel to the cylinder center, and a side space of the engine The inlet member can be attached / detached and refueled from the space (claim 4).

In the present invention, an oil level oil supply gauge is fixed to a side mounting hole of a cylinder block, and has a cylindrical outer guide pipe having an oil passage formed therein, and is detachably attached to the outer guide pipe and fluid-tightly sealed. The inserted inlet member, an internal oil supply pipe formed in a cylindrical shape and detachably attached to the lower surface of the cylinder block, and fixed to the inlet member and inserted into the external guide pipe and the internal oil supply pipe And a long oil inspection rod made of an elastic material that can be bent and deformed (Claim 1). More specifically, the external guide tube is inclined at a predetermined angle with respect to the vertical line. The internal oil supply pipe is bent and installed in the vertical direction from the installation direction of the external guide pipe, and the oil inspection rod is installed in a curved manner inside the internal oil supply pipe from within the external guide pipe (Claim 3).
An external guide pipe with an oil passage and an inlet member that can be attached to and detached from the external guide pipe are fixed to the side mounting hole of the cylinder block, while a cylindrical internal oil supply pipe is attached to the lower surface of the cylinder block to allow bending deformation. A long oil detection rod made of an elastic material is fixed to the inlet member and inserted into the internal oil supply pipe through the external guide pipe, so that the external guide pipe and the inlet member are inserted into the side mounting holes of the cylinder block. On the other hand, by attaching the cylindrical internal oil supply pipe separately to the lower surface of the cylinder block, it is possible to easily attach the curved oil inspection rod inserted into the internal oil supply pipe from the external guide pipe and the inlet member. it can.

  In addition, since the cylindrical internal oil supply pipe is attached and fixed to the lower surface of the cylinder block, the internal oil supply pipe can be securely fixed without interference with the outside, and the assemblability is good.

  In addition, a gap of a certain size is formed between the upper end portion of the internal oil supply pipe and the lower end portion of the external guide pipe, and the inside of the external guide pipe is communicated with the cylinder block through the gap so that the oil passes through the gap to the cylinder block. Since it is formed so as to be able to flow inside (Claim 1), the oil supplied into the outer guide pipe flows into the cylinder block through the gap and is supplied, so that the oil can be smoothly supplied. it can.

  Further, the gap is formed by inclining the upper end portion of the internal oil supply pipe so that the upper side of the engine is narrower than the lower side of the engine with respect to the center of the oil inspection rod (claim 2). Sometimes the oil hits the engine upper side of the internal oil supply pipe, and the oil supply is performed smoothly.

  If the cylinder center is used in an inclined engine inclined at a predetermined angle with respect to the vertical line, the center of the external guide pipe and the inlet member is installed toward the cylinder center, and the inlet member is attached and detached from the space of the engine side space. In addition, since the center of the external guide pipe and the inlet member is disposed in the working space of the tilt engine, the workability of the oil supply and the oil inspection work is good.

  Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this example are not intended to limit the scope of the present invention only to specific examples unless otherwise specified. Only.

FIG. 1 is a cross-sectional view of a main part perpendicular to the crankshaft of a general-purpose small tilt engine according to an embodiment of the present invention, and FIG. is there.
1 and 2, the engine is a general-purpose small-tilt engine, and the cylinder axis 10 is inclined by an inclination angle θ (θ = 45 ° to 65 °) with respect to a vertical line 20 passing through the crankshaft center 9.

Reference numeral 100 denotes an oil level refueling gauge, which is installed on the work space side W of the engine 1 with an inclination equal to the inclination angle θ. An external guide tube 1 is fixed to the liquid nectar in a mounting screw hole 5 formed in a side portion of the cylinder block 6 of the engine. The external guide tube 1 is formed in a cylindrical shape, and an oil passage 1a is formed therein, and the upper portion is expanded (1b is an expanded portion) and connected to the cylindrical portion 3a.
The upper cylindrical portion 3a of the outer guide tube 1 is provided with an inlet member 4 that is detachably attached to the inner periphery of the cylindrical portion 3a and is fluid-tightly sealed by an O-ring, a flat packing, or the like. . The inlet member 4 is formed by a seal portion 4a made of a rubber-like material having a seal groove 4b formed on the outer periphery, and a grip portion 4c fixed to the seal portion 4a.

On the lower surface 8 of the cylinder block 6, an internal oil supply pipe 2 made of a curved pipe having an oil passage 2b formed therein is attached. As shown in FIG. 2, the internal oil supply pipe 2 is attached to the lower surface 8 of the boss portion 6 a of the cylinder block 6 with two bolts 7 at both ends of the mounting plate 6 b fixed to the outer periphery thereof.
The center of the upper part of the internal oil supply pipe 2 coincides with the center of the outer guide pipe 1, and the lower part is formed in a bent pipe part 2c bent in the vertical direction from the center.

  Between the oil passages 1a and 2b, a long oil inspection rod 3 made of an elastic material that can be bent and deformed is inserted. The oil inspection rod 3 is installed by curving a rod-like or long plate or the like, the upper end portion is fixed to the inlet member 4, and the oil passage 1 a in the external guide pipe 1 and the oil passage in the internal oil supply pipe 2. 2b is inserted into the oil pan 7 fixed to the lower surface of the cylinder block 6, and the oil level in the oil pan 7 is detected. Thereby, the oil detection rod 3 can be inserted between the oil passages 1a and 2b by grasping the grip portion 4c and the oil level can be detected.

  The upper end portion of the internal oil supply pipe 2 is expanded in a funnel shape, and a gap 11 is formed between the upper end portion of the expanded portion 2a and the lower surface of the external guide tube 1 facing the upper end portion. The The gap 11 is installed with the upper end inclined at an angle of α ° with respect to the center of the oil detection rod 3 so that the upper side of the engine is narrower than the lower side of the engine with respect to the center of the oil detection rod 3. Yes.

  Therefore, according to this configuration, the external guide pipe 1 having the oil passage 1a and the inlet member 4 detachable from the external guide pipe 1 are fixed to the side mounting screws 5 of the cylinder block 6, while the cylindrical internal oil supply The pipe 2 is attached to the lower surface 8 of the cylinder block 6, and a rod-shaped oil inspection rod 3 made of an elastic material that can be bent and deformed is fixed to the inlet member 4 and passed through the external guide tube 1 to the internal oil supply tube 2. Since the external guide tube 1 and the inlet member 4 are fixed to the side mounting screws 5 of the cylinder block 6, the cylindrical internal oil supply tube 3 is connected to the lower surface 8 of the cylinder block 6. By attaching the pipe 1 and the inlet member 4 separately, the curved oil inspection rod 3 inserted from the outer guide pipe 1 and the inlet member 4 to the internal oil supply pipe 2 can be easily attached.

  Further, since the cylindrical internal oil supply pipe 2 is attached and fixed to the lower surface 8 of the cylinder block 6, the internal oil supply pipe 2 can also be securely fixed without interference with the outside, and the assemblability is also good.

  A gap 11 having a fixed size is formed between the upper end portion of the inner oil supply pipe 2 and the lower end portion of the outer guide pipe 2, and the inside of the outer guide pipe 1 is communicated with the cylinder block 6 through the gap 11. Is formed so as to be able to flow into the cylinder block 6 through the gap 11, so that the oil supplied into the external guide pipe 1 flows into the cylinder block 6 through the gap 11 and is supplied. Refueling can be performed smoothly.

  In addition, the gap 11 is formed such that the upper end of the internal oil supply pipe 2 is α with respect to the center of the oil detection rod 3 so that the upper side of the engine is narrower than the lower side of the engine with respect to the center of the oil detection rod 3. Since it is installed at an angle, the oil hits the engine upper side of the internal oil supply pipe 2 at the time of refueling, and does not scatter and refueling is performed smoothly.

  Further, as in this embodiment, when the cylinder center is used in an inclined engine inclined at a predetermined angle with respect to the vertical line, the center of the outer guide pipe 1 and the inlet member 4 is set parallel to the direction of the cylinder center 10. Since the inlet member 4 can be attached and detached and refueled from the space W in the side space of the engine, the center of the external guide tube 1 and the inlet member 4 is disposed in the working space of the inclined engine. Workability of oil inspection work is good.

  According to the present invention, in providing an oil level oil gauge that integrates an oil supply pipe and an oil detection part at the side of a cylinder block of an engine, a curved oil detection that can reach a horizontal oil surface from an inclined inlet part. It is possible to provide an oil level oil gauge mounting structure that enables smooth oil supply and oil inspection of the rod.

It is principal part sectional drawing orthogonal to the crankshaft of the general purpose small engine concerning the Example of this invention. It is principal part sectional drawing (Z arrow view of FIG. 1) parallel to a crankshaft centerline.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 External guide pipe 1a Oil path 2 Internal oil supply pipe 2b Oil path 3 Oil detection rod 4 Inlet member 4 Grip part 5 Mounting screw hole 6 Cylinder block 6b Mounting plate 7 Oil pan 8 Cylinder block bottom face 10 Cylinder axis 11 Gap 100 Oil Level oil gauge

Claims (4)

  In the oil level oil gauge mounting structure in which an oil level oil gauge integrated with an oil supply pipe and an oil inspection part is installed on the side of the cylinder block of the engine, and the oil level oil gauge can be detached from the outside of the engine. The oil level refueling gauge is inserted in a cylindrical external guide tube fixed to the side mounting hole of the cylinder block and having an oil passage formed therein, and is detachably and fluidly sealed in the external guide tube. An inlet member, an internal oil supply pipe formed in a cylindrical shape and detachably attached to the lower surface of the cylinder block, and fixed to the inlet member and inserted through the external guide pipe into the internal oil supply pipe; and A long oil inspection rod made of an elastic material capable of bending deformation, and an upper end portion of the internal oil supply pipe and a lower end portion of the external guide pipe Is formed with a gap of a certain size, and the inside of the outer guide pipe is communicated with the cylinder block through the gap so that oil can also flow through the gap into the cylinder block. Oil level oil gauge mounting structure.   2. The oil according to claim 1, wherein the gap is formed by inclining an upper end portion of the internal oil supply pipe so that the upper side of the engine is narrower than the lower side of the engine with respect to the center of the oil inspection rod. Level oil gauge mounting structure.   The external guide pipe is provided at a predetermined angle with respect to a vertical line, the internal oil supply pipe is mounted bent from the installation direction of the external guide pipe in the vertical line direction, and the oil inspection rod is installed from within the external guide pipe. 2. The oil level oil gauge mounting structure according to claim 1, wherein the oil supply pipe is installed in a curved manner.   The engine is configured as an inclined engine in which a cylinder center is inclined at a predetermined angle with respect to a vertical line, and the centers of the outer guide pipe and the inlet member are installed in a direction parallel to the cylinder center, and a side space of the engine The oil level oil gauge mounting structure according to claim 1 or 2, wherein the inlet member can be attached and detached and lubricated from the space.

Images