WO2012137718A1 - シール部材及びエンジンのプラグチューブシール構造 - Google Patents
シール部材及びエンジンのプラグチューブシール構造 Download PDFInfo
- Publication number
- WO2012137718A1 WO2012137718A1 PCT/JP2012/058885 JP2012058885W WO2012137718A1 WO 2012137718 A1 WO2012137718 A1 WO 2012137718A1 JP 2012058885 W JP2012058885 W JP 2012058885W WO 2012137718 A1 WO2012137718 A1 WO 2012137718A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mounting hole
- seal
- cylinder head
- outer peripheral
- head cover
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F11/00—Arrangements of sealings in combustion engines
- F02F11/002—Arrangements of sealings in combustion engines involving cylinder heads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
- F16J15/022—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material
- F16J15/024—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity
- F16J15/025—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material the packing being locally weakened in order to increase elasticity and with at least one flexible lip
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/062—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces characterised by the geometry of the seat
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/02—Details
- H01T13/08—Mounting, fixing or sealing of sparking plugs, e.g. in combustion chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/006—Camshaft or pushrod housings
Definitions
- the present invention relates to a seal member and an engine plug tube seal structure.
- a spark plug mounting hole for inserting a plug tube in which a spark plug is accommodated is formed in the cylinder head cover.
- a seal member is disposed between the inner peripheral surface of the spark plug mounting hole and the outer peripheral surface of the plug tube, and seals between the cylinder head cover and the plug tube in an airtight and liquid tight manner.
- Patent Document 1 discloses a cylinder head cover having a flange portion protruding radially inward from a lower inner peripheral surface of a spark plug mounting hole, a plug tube inserted into the spark plug mounting hole, a cylinder head cover and a plug.
- An invention is disclosed that includes an annular seal member that is disposed between a tube, press-fitted into a spark plug mounting hole, and abutted and supported on the upper surface of the flange portion.
- the present invention has been developed from such a viewpoint, and an object of the present invention is to provide a seal member and an engine plug tube seal structure in which work efficiency when the seal member is removed is improved.
- the present invention is an elastically deformable seal member that is attached to a mounting hole formed in a base material and is disposed between the cylindrical member inserted into the mounting hole and the base material. And a first base that is inserted into the mounting hole, protrudes radially outward from the outer peripheral surface of the base, and engages with a first engaged portion formed on the inner peripheral surface of the mounting hole.
- the grip portion in the elastically deformable seal member, by having the grip portion protruding from the one end side of the mounting hole, when the grip portion is pressed toward the other end side of the mounting hole, the grip portion is radially inward. Elastically deforms so as to shrink, and the engagement state between the first engaging portion and the first engaged portion of the base material can be released, so that the seal member can be easily removed from the base material without using a tool. . Therefore, the working efficiency when removing and removing the seal member is improved.
- the grip portion is configured to have a higher rigidity than the seal lip portion.
- the grip portion is formed with higher rigidity than the seal lip portion, it is possible to prevent an operator from accidentally pressing the seal lip portion having low rigidity and performing an extraction operation.
- the gripping part formed continuously with the base part can be surely pressed to perform the extraction work. Therefore, when the operator presses the gripping part toward the other end side of the mounting hole, the gripping part is easily elastically deformed radially inward, so that the sealing member can be easily removed and attached. In addition, it is possible to prevent the seal member from being damaged during work.
- the gripping portion is formed with higher rigidity than the seal lip portion, the support force for supporting the seal lip portion is increased, so that the seal lip portion exhibits a sufficient tightening force against the tubular member. The space between the seal member and the tubular member is securely sealed in an airtight and liquid-tight manner.
- the second engagement portion further includes a second engagement portion that is recessed in the outer peripheral surface of the base portion near the grip portion and has an outer diameter smaller than the outer diameter of the first engagement portion and the grip portion. It is preferable that the portion is configured to engage with a second engaged portion that is formed to project radially inward from the inner peripheral surface of the mounting hole.
- the holding force (fixing force) of the seal member with respect to the base material can be further increased.
- the sealing member can be securely held on the base material by further increasing the holding force, foreign substances, oil and moisture can be further prevented from entering between the sealing member and the base material.
- the outer peripheral diameter of the second engaging portion is smaller than the outer peripheral diameters of the first engaging portion and the gripping portion, and the second engaging portion is recessed closer to the gripping portion of the base portion, thereby Since a thin part is provided in the vicinity of the part, it is possible to elastically deform the gripping part even if the force pressing the gripping part is relatively small, and the work efficiency when removing and removing the seal member is further improved. To do.
- the present invention provides a cylinder head cover that is attached to an upper portion of a cylinder head and has an ignition plug attachment hole, and a plug tube that is inserted into the ignition plug attachment hole and accommodates the ignition plug therein. And an elastically deformable seal member attached to the spark plug mounting hole and disposed between the cylinder head cover and the plug tube, wherein the cylinder head cover comprises: A first engaged portion that is recessed in the inner peripheral surface of the spark plug mounting hole, and is formed to project radially inward from the inner peripheral surface of the spark plug mounting hole, and the inner peripheral diameter is the first engaged surface.
- a second engaged portion smaller than the inner peripheral diameter of the joint portion, and the seal member includes a base inserted into the spark plug mounting hole, and an outer peripheral surface of the base A first engagement portion that protrudes radially outward and engages with the first engaged portion; a seal lip portion that elastically contacts the outer peripheral surface of the plug tube; and the base portion and the seal lip portion.
- a gripping portion formed between and projecting downward from the spark plug mounting hole and having a higher rigidity than the seal lip portion, and a recess provided on the outer peripheral surface of the base portion near the gripping portion.
- a diameter is smaller than an outer peripheral diameter of the first engaging portion and the grip portion, and a second engaging portion that engages with the second engaged portion.
- the gripping portion in the elastically deformable seal member, by having the gripping portion protruding downward from the spark plug mounting hole, when the gripping portion is pressed toward the upper side of the spark plug mounting hole, the gripping portion has a diameter. Since it can be elastically deformed to shrink inward in the direction and the engagement state between the first engagement portion and the first engaged portion of the cylinder head cover can be released, the sealing member can be easily removed from the cylinder head cover without using a tool. Can do. Therefore, the working efficiency when removing and removing the seal member is improved.
- the cylinder head cover further includes a cap member that contacts the upper surface of the seal member, and the cylinder head cover further includes a third engaged portion that is formed at an upper edge portion of the spark plug mounting hole and engages with the cap member.
- the sealing member is preferably configured so as to be held between the cap member and the second engaged portion.
- the cap member By providing a cap member that abuts on the upper surface of the seal member, it is possible to reduce the entry of foreign matter, oil and moisture into the seal member from the upper side of the spark plug mounting hole, thereby reducing the sealing failure caused by the entry of foreign matter.
- the cap member is engaged with the third engaged portion of the cylinder head cover, and the seal member is held between the cap member and the second engaged portion of the cylinder head cover.
- the cylinder head cover can be securely held, and the sealing failure of the seal member during assembly can be suppressed.
- the cap member is an annular member formed with higher rigidity than the seal member, and protrudes radially outward from the outer peripheral surface of the cap member, and has an outer periphery larger than the inner peripheral diameter of the spark plug mounting hole.
- a flange portion formed in a diameter, and a third engagement portion that engages with the third engaged portion, wherein the third engagement portion is in a radial direction from an outer peripheral surface of the flange portion.
- At least two extending portions extending outward and spaced from each other along the circumferential direction of the flange portion, and the third engaged portion is an upper edge of the spark plug mounting hole An annular support surface that extends along the portion and supports the extension portion from below, a peripheral wall portion that extends upward from the outer peripheral end of the support surface, and a radial direction from the upper end of the peripheral wall portion Projecting inward, spaced apart from each other along the circumferential direction of the peripheral wall
- At least two protrusions are, have, the extending portion is preferably so are insertable configured between said support surface and said protrusion.
- the extension portion is aligned with the position where there is no protrusion, and the cap member is rotated after being brought into contact with the support surface. Since the cap member can be attached to the cylinder head cover by inserting the extending portion between the support surface and the protrusion, the working efficiency at the time of attaching the cap member is improved.
- the cap member is rotated and then lifted so that the extending portion moves to a position where there is no protrusion (between adjacent protrusions). Since it can be removed from the cylinder head cover, the work efficiency when the cap member is removed is improved. That is, since the cap member can be detached and attached without using a tool, the maintainability is improved.
- the cap member is an annular member formed with higher rigidity than the seal member, and protrudes radially outward from the outer peripheral surface of the cap member, and has an outer periphery larger than the inner peripheral diameter of the spark plug mounting hole.
- a flange portion formed in a diameter, and a third engagement portion that engages with the third engaged portion, wherein the third engagement portion is in a radial direction from an outer peripheral surface of the flange portion.
- the third engaged portion is at least two protrusions that protrude upward from the upper edge portion of the spark plug mounting hole and are spaced apart from each other along the circumferential direction of the spark plug mounting hole, The opening is configured to allow the protrusion to be inserted.
- the Unisuru Preferably, the Unisuru.
- the cap member when the cap member is attached to the cylinder head cover, the cap member can be attached to the cylinder head cover by inserting the opening of the cap member into the protrusion, so that the work at the time of attaching the cap member can be performed. Efficiency is improved.
- the protrusion when removing the cap member from the cylinder head cover, by lifting the cap member, the protrusion can be removed from the opening and the cap member can be removed from the cylinder head cover. Will improve. That is, since the cap member can be detached and attached without using a tool, the maintainability is improved.
- the seal member may further include a cap seal portion that protrudes upward from the upper end of the base portion, and a concave groove portion that is opened downward is inserted into the cap seal portion on a lower surface of the flange portion.
- the cap member is configured to be fixed to the cylinder head cover in a state of being elastically deformed so that the cap seal portion contracts in the vertical direction.
- the cap seal portion of the seal member is inserted into the groove portion of the cap member in a state where the cap seal portion is elastically deformed so as to be contracted in the vertical direction. Since it is tightly sealed, foreign matter, oil and moisture can be prevented from entering between the sealing member and the cap member, and consequently, sealing failure caused by the entry of foreign matter can be prevented.
- FIG. 1 is a longitudinal sectional view of a plug tube seal structure for an automobile engine according to an embodiment of the present invention.
- (A) is a longitudinal sectional view of the cap member
- (b) is a longitudinal sectional view of the sealing member
- (c) is a longitudinal sectional view of the cylinder head cover.
- It is a disassembled perspective view of a cylinder head cover, a sealing member, and a cap member. It is explanatory drawing of a cylinder head cover, a sealing member, and a cap member, (a) is a partial expansion perspective view which shows the state which the cap member removed, (b) is the partial expansion which shows the state in which the cap member was mounted
- FIG. 1 is a partial expansion perspective view which shows the state which the cap member removed
- FIG. 2 is a partial expansion perspective view which shows the state which the cap member removed
- FIG. 3 is a partial expansion perspective view which shows the state which the cap member removed
- FIG. 4C is a cross-sectional view taken along line I, and FIG. 4C is a partially enlarged vertical cross-sectional view illustrating a state where the cap member is attached. It is explanatory drawing of the cylinder head cover which concerns on a 3rd modification, a sealing member, and a cap member, (a) is a partial expansion perspective view which shows the state which the cap member removed, (b) is a cap member mounted
- FIG. 1 is a longitudinal sectional view of a plug tube seal structure for an automobile engine according to an embodiment of the present invention.
- 2A is a longitudinal sectional view of the cap member 4
- FIG. 2B is a longitudinal sectional view of the seal member 3
- FIG. 2C is a longitudinal sectional view of the cylinder head cover 1.
- a cylinder head cover 1 constituting a part of the engine is formed with a circular spark plug mounting hole 1a penetrating in the vertical direction (plate thickness direction), and this spark plug mounting hole 1a.
- the plug tube 2 is inserted into the.
- a seal member 3 is disposed between the cylinder head cover 1 and the plug tube 2 over the entire circumference of the spark plug mounting hole 1a, and a cap member 4 is disposed above the seal member 3. .
- the cylinder head cover 1 as a base material is a synthetic resin member attached to an upper portion of a cylinder head (not shown). As shown in FIGS. 1 and 2 (c), a circular opening 11a penetrating in the vertical direction (axial direction) is formed in the upper wall 11 of the cylinder head cover 1, and the bottom of the opening 11a A cylindrical mounting wall 12 is formed at the edge portion so as to extend downward by a predetermined length.
- the mounting wall 12 has a circular hole 12a formed continuously with the opening 11a.
- the spark plug mounting hole 1 a is configured by the opening 11 a of the upper wall 11 and the hole 12 a of the mounting wall 12.
- a metal cylinder head cover 1 may be used.
- a groove portion 12 b that is recessed in an annular shape is formed on the upper inner peripheral surface of the mounting wall 12.
- a protruding portion 12c that protrudes by a predetermined length radially inward is formed.
- the upper wall 11 of the cylinder head cover 1 is provided with a fastening portion 13 that extends upward by a predetermined length, and the fastening portion 13 is continuously formed on a part of the outer peripheral surface of the mounting wall 12.
- the fastening portion 13 is formed with a bolt insertion hole 13a for inserting the bolt B, and a nut N into which the bolt B is screwed is fixed inside the bolt insertion hole 13a.
- FIG. 3 is an exploded perspective view of the cylinder head cover 1, the seal member 3, and the cap member 4.
- 4A and 4B are explanatory views of the cylinder head cover 1, the seal member 3, and the cap member 4.
- FIG. 4A is a partially enlarged perspective view showing a state in which the cap member 4 is detached
- FIG. It is a partial expansion perspective view which shows the state with which was mounted
- a support surface 14, a peripheral wall portion 15, and a plurality of (two) protrusions 16 and 16 are provided on the upper edge portion of the spark plug mounting hole 1 a. .
- the support surface 14 is an annular horizontal surface that abuts and supports an extended portion 43 of the cap member 4 to be described later.
- the support surface 14 extends along the upper edge of the spark plug mounting hole 1a.
- the peripheral wall portion 15 is a cylindrical wall portion formed to extend upward from the outer peripheral end of the support surface 14 by a predetermined length. The peripheral wall 15 is erected from the support surface 14 so as to surround the upper edge of the spark plug mounting hole 1a.
- the groove 12b corresponds to a “first engaged portion” in the claims
- the protrusion 12c corresponds to a “second engaged portion” in the claims
- the peripheral wall 15 and the protrusion 16 correspond to a “third engaged portion” in the claims.
- the plug tube 2 is a cylindrical metal member, and is appropriately selected from known plug tubes.
- the upper part (one end) of the plug tube 2 as a cylindrical member is inserted into the spark plug mounting hole 1a, and the lower part (the other end) is fixed to a cylinder head (not shown).
- the upper portion of the plug tube 2 is fixed to the cylinder head cover 1 via a seal member 3.
- a part of the plug top coil 21 is detachably accommodated inside the upper side of the plug tube 2, and an ignition plug (not shown) is detachably accommodated inside the lower side.
- the plug top coil 21 includes a shaft portion 21a to be inserted into the plug tube 2, a main body portion 21b formed by expanding the diameter of the upper portion of the shaft portion 21a, and a predetermined diameter outward from the outer peripheral surface of the main body portion 21b. And a flange portion 21c formed so as to protrude by a long length. An annular groove portion 21d is formed on the lower surface of the main body portion 21b. A bolt insertion hole 21e for inserting the bolt B is formed in the flange portion 21c.
- the plug top coil 21 is fixed to the upper surface of the cylinder head cover 1 by a bolt B inserted through the bolt insertion hole 21e and the bolt insertion hole 13a.
- the seal member 3 is formed of a substantially cylindrical body whose upper and lower surfaces are opened, and is made of an elastically deformable material (for example, rubber). As shown in FIG. 1, the seal member 3 is sandwiched between the inner peripheral surface of the spark plug mounting hole 1 a and the outer peripheral surface of the plug tube 2, and airtight and liquid-tight between the cylinder head cover 1 and the plug tube 2. It is a member that seals.
- the seal member 3 includes a base portion 31, a projecting portion 32, a seal lip portion 33, a grip portion 34, a groove portion 35, and a cap seal portion 36 (see FIG. 2B).
- the base 31 is an annular portion that is inserted into the spark plug mounting hole 1a.
- the base 31 extends along the vertical direction.
- the protrusion 32 is a part that engages (fits) with the groove 12b of the cylinder head cover 1.
- the protrusion 32 is formed to protrude from the upper outer peripheral surface of the base portion 31 by a predetermined length radially outward.
- the seal lip portion 33 is a portion that elastically contacts (pressure contact) the outer peripheral surface of the plug tube 2 and seals between the seal member 3 and the plug tube 2 in an air-tight and liquid-tight manner.
- the seal lip portion 33 extends radially inward from the lower end of the gripping portion 34 and is bent upward so as to be convex downward, and is extended upward from the radially inner end of the bent portion 33a. And a sealing portion 33b.
- the seal portion 33b is a ring-shaped portion that is spaced apart from the grip portion 34 inward in the radial direction by a predetermined length and into which the plug tube 2 is inserted. As shown in FIG. 2B, the seal portion 33b is formed so that the thickness gradually increases from the lower side toward the upper side. A tapered surface 33c is formed on the inner peripheral surface of the seal portion 33b. The taper surface 33c gradually decreases in diameter from the lower side toward the upper side. As shown in FIG. 1, the upper end of the seal portion 33 b is a free end, and the inner peripheral surface on the upper end side is in elastic contact with the outer peripheral surface of the plug tube 2.
- the sealing portion 33b presses the plug tube 2 by the urging force (elasticity) of the bent portion 33a, sufficient sealing force is exerted on the plug tube 2, and the sealing member 3 and the plug tube 2 is hermetically and liquid-tightly sealed.
- the grip portion 34 is a portion that is pressed by an operator when the seal member 3 is attached to and detached from the cylinder head cover 1.
- the grip portion 34 is formed between the base portion 31 and the seal lip portion 33 and protrudes (exposed) downward from the spark plug mounting hole 1a.
- the grip portion 34 is formed so as to be thicker than the seal lip portion 33, and has higher rigidity than the seal lip portion 33.
- a tapered surface 34 a that gradually decreases in diameter from the upper side to the lower side is formed on the outer peripheral surface of the grip portion 34.
- the groove portion 35 is an annular portion that engages (fits) with the protrusion 12 c of the cylinder head cover 1.
- the groove portion 35 is recessed in the outer peripheral surface of the base portion 31 near the grip portion 34.
- the minimum outer peripheral diameter of the groove portion 35 is smaller than the maximum outer peripheral diameter of the protrusion 32 and the grip portion 34.
- the protrusion 32 corresponds to a “first engagement portion” in the claims
- the groove portion 35 corresponds to a “second engagement portion” in the claims.
- the cap member 4 is an annular member that restricts the relative upward movement of the seal member 3 and prevents the seal member 3 from coming off from the upper side of the spark plug mounting hole 1a.
- the cap member 4 is in contact with the upper surface of the seal member 3 and is made of a material (for example, metal or synthetic resin) having a higher rigidity than the material constituting the seal member 3.
- the cap member 4 is configured to be detachable from the cylinder head cover 1. As illustrated in FIG. 4A, the cap member 4 includes a peripheral wall portion 41, a flange portion 42, and a plurality (two) of extended portions 43 and 43.
- the peripheral wall portion 41 is an annular wall portion extending along the vertical direction. As shown in FIG. 1, the peripheral wall portion 41 is inserted (fitted) into the groove portion 21 d of the plug top coil 21 and is connected to the plug top coil 21.
- the flange portion 42 is an annular portion formed to protrude from the lower outer peripheral surface of the peripheral wall portion 41 by a predetermined length radially outward.
- the outer peripheral diameter of the flange portion 42 is formed to be slightly larger than the inner peripheral diameter of the spark plug mounting hole 1a.
- An annular groove 42a that is recessed so as to open downward is formed on the lower surface of the flange 42, and the cap seal portion 36 of the seal member 3 is inserted into the groove 42a.
- the extending portion 43 is a portion that is inserted between the support surface 14 of the cylinder head cover 1 and the protruding portion 16. As shown in FIG. 4A, the extending portion 43 is formed by extending a predetermined length radially outward from the outer peripheral surface of the flange portion 42, and has an equal interval in the circumferential direction of the flange portion 42. Is provided.
- the extending portion 43 is formed into a curved surface shape (arc shape) having substantially the same curvature as the peripheral wall portion 15 and the protruding portion 16.
- the length of the extending portion 43 along the circumferential direction is smaller than the interval between the adjacent protruding portions 16, 16 and is substantially the same as the length of the protruding portion 16 along the circumferential direction.
- the number of the extension part 43 and the projection part 16 is not limited, What is necessary is just at least 2 or more.
- the extending portion 43 corresponds to a “third engaging portion” in the claims.
- the groove 35 is engaged with the protrusion 12c, the cap member 4 is in contact with the upper surface of the seal member 3, and the plug top coil 21 connected to the cap member 4 is bolted to the cylinder head cover 1.
- FIG. 5 is a vertical cross-sectional view for explaining the removal process of the seal member 3.
- the holding part 34 of the sealing member 3 is pressed toward an axial direction upper side.
- the gripping portion 34 is elastically deformed so as to shrink inward in the radial direction, the projection 32 is detached from the groove portion 12 b of the cylinder head cover 1, and the projection 12 c of the cylinder head cover 1 is detached from the groove portion 35. That is, the engagement state between the seal member 3 and the cylinder head cover 1 is released.
- the seal member 3 is removed from the upper side of the spark plug mounting hole 1a with the cylinder head cover 1 attached to the cylinder head, the seal member is removed when moisture or mud adheres to the upper surface of the cylinder head cover 1.
- moisture or the like may enter the engine during the pulling out operation 3. Therefore, in the present embodiment, since the grip portion 34 of the seal member 3 protrudes from the lower side of the spark plug mounting hole 1a, the grip portion 34 cannot be pressed unless the cylinder head cover 1 is removed from the cylinder head. The seal member 3 cannot be removed.
- the seal member 3 when the seal member 3 is removed, the cylinder head cover 1 must be removed from the cylinder head, so that moisture adhering to the upper surface of the cylinder head cover 1 is prevented from entering the engine. Can do.
- the extending portion 43 is brought into contact with the support surface 14 in a position where the protruding portion 16 is not present (see FIGS. 4A and 4B). Subsequently, when the cap member 4 is rotated and the extending portion 43 is inserted between the support surface 14 and the protruding portion 16, the cap member 4 is attached to the cylinder head cover 1.
- the cylinder head cover 1 is attached to the cylinder head.
- the upper side of the plug tube 2 attached to the cylinder head is inserted into the seal member 3 (seal lip portion 33) (see FIG. 1).
- the flange portion 21 c of the plug top coil 21 is fixed to the cylinder head cover 1 with the bolt B.
- the elastically deformable seal member 3 includes the grip portion 34 that protrudes downward from the spark plug mounting hole 1a.
- the gripping portion 34 When pressed toward the upper side in the axial direction (toward the upper side of the spark plug mounting hole 1a), the gripping portion 34 is elastically deformed so as to shrink inward in the radial direction, and the protrusion 32 and the groove portion 12b of the cylinder head cover 1 are engaged. Since the state can be released and the engagement state between the groove 35 and the protrusion 12c of the cylinder head cover 1 can be released, the seal member 3 can be easily removed from the cylinder head cover 1 without using a tool. Therefore, the work efficiency when the seal member 3 is removed is improved.
- the grip portion 34 is formed with higher rigidity than the seal lip portion 33, it prevents the operator from accidentally pressing the seal lip portion 33 with low rigidity to perform the extraction operation,
- the gripping portion 34 formed continuously with the base portion 31 can be surely pressed to perform the extraction operation. Therefore, when the operator presses the grip portion 34 toward the upper side in the axial direction, the grip portion 34 is easily elastically deformed inward in the radial direction. In addition, it is possible to prevent the seal member 3 from being damaged during work.
- the holding portion 34 is formed with higher rigidity than the seal lip portion 33, the supporting force for supporting the seal lip portion 33 is increased, and therefore the seal lip portion 33 is sufficiently tight against the plug tube 2. By exerting a force, the seal member 3 and the plug tube 2 are reliably sealed in an airtight and liquid tight manner.
- the outer diameter of the groove 35 is smaller than the outer diameter of the protrusion 32 and the gripping portion 34, and the groove 35 is recessed near the gripping portion 34 of the base 31, so that Since the thin portion is provided, the gripping portion 34 can be elastically deformed even if the force for pressing the gripping portion 34 is relatively small, and the work efficiency when the seal member 3 is removed is further improved. .
- the groove 35 of the seal member 3 and the protrusion 12c of the cylinder head cover 1 are engaged.
- the holding force (fixing force) of the member 3 can be further increased. Further, since the holding force is further increased, the seal member 3 can be reliably held by the cylinder head cover 1, so that foreign matter, oil, and moisture can further enter between the seal member 3 and the cylinder head cover 1. It is possible to prevent a sealing failure caused by the entry of foreign matter.
- the cap member 4 that abuts on the upper surface of the seal member 3 is provided, and the plug top coil 21 is provided so as to close the insertion hole 4a of the cap member 4, so that foreign matter is introduced into the seal member 3 from above the spark plug mounting hole 1a. Oil and moisture can be prevented from entering, and as a result, sealing failure caused by entry of foreign matter and the like can be prevented.
- the cap seal portion 36 of the seal member 3 is inserted into the groove portion 42a of the cap member 4 in a state where the cap seal portion 36 is elastically deformed so as to be contracted in the vertical direction, whereby the seal member 3 and the cap member 4 are hermetically sealed. Since the liquid-tight sealing is performed, it is possible to prevent foreign matter, oil, and moisture from entering between the sealing member 3 and the cap member 4, and thus, it is possible to prevent a sealing failure caused by the entry of the foreign matter.
- the seal member 3 since the seal member 3 is sandwiched and held between the cap member 4 and the protrusion 12c of the cylinder head cover 1, the seal member 3 can be securely held by the cylinder head cover 1, and the seal member 3 can be secured when assembled. Seal failure can be suppressed.
- the extending portion 43 is aligned with the position where the protruding portion 16 is not provided, and the cap member 4 is rotated after being brought into contact with the support surface 14. And since the cap member 4 can be attached to the cylinder head cover 1 by inserting the extension part 43 between the support surface 14 and the projection part 16, the work efficiency at the time of attachment of the cap member 4 improves.
- the cap member 4 is rotated and lifted so that the extending portion 43 moves to a position where the protruding portion 16 does not exist. Therefore, the working efficiency when the cap member 4 is removed can be improved. That is, since the cap member 4 can be detached and attached without using a tool, the maintainability is improved.
- the outer peripheral surface of the gripping portion 34 is a tapered surface 34a that gradually decreases in diameter from the upper side to the lower side.
- the present invention is not limited to this, and for example, FIG. As shown to (b), you may make it the vertical surface 34b formed in the same outer diameter along an axial direction (along the up-down direction).
- the groove portion 35 is omitted, the outer peripheral surface of the gripping portion 34 is extended to the lower outer peripheral surface of the protrusion 32, and the outer peripheral surface of the gripping portion 34 is set to the vertical surface 34b.
- FIG. 6A the groove portion 35 is omitted, the outer peripheral surface of the gripping portion 34 is extended to the lower outer peripheral surface of the protrusion 32, and the outer peripheral surface of the gripping portion 34 is set to the vertical surface 34b.
- the outer peripheral surface of the grip portion 34 may be a vertical surface 34b while being provided with the groove portion 35. Even in this case, the oil and moisture attached to the grip portion 34 easily fall down along the vertical surface 34b due to its own weight, so that deterioration of the seal member 3 caused by the adhesion of oil or the like can be reduced.
- FIG. 7 is an explanatory view of a cylinder head cover 1, a seal member 3 and a cap member 4 according to a first modification, and (a) is a partially enlarged perspective view showing a state in which the cap member 4 is detached. (B) is a partially enlarged perspective view showing a state in which the cap member 4 is mounted.
- a plurality of (three) projecting portions 17, 17... are formed to protrude upward by a predetermined length from the upper edge of the spark plug mounting hole 1 a, and a plurality of (three) extending portions 43 are formed.
- 43... are different from the above-described embodiment in that openings 43a are respectively formed in.
- the protrusions 17 are formed in a curved surface shape that is substantially the same as the curvature of the spark plug mounting hole 1a, and are provided at equal intervals in the circumferential direction of the spark plug mounting hole 1a.
- the protrusion 17 includes a main body portion 17a that protrudes upward by a predetermined length from the upper surface of the upper wall 11, and a claw portion 17b that extends from the upper outer peripheral surface of the main body portion 17a by a predetermined length radially outward. Yes.
- claw part 17b is a site
- a tapered surface 17c is formed on the outer peripheral surface of the claw portion 17b so as to gradually incline radially outward from the upper side to the lower side.
- the extending portions 43 are provided at equal intervals in the circumferential direction of the flange portion 42.
- the extending portion 43 is formed with an opening 43a penetrating in the vertical direction.
- the opening 43a has a shape that fits the protrusion 17 and is configured to allow the protrusion 17 to be inserted.
- the number of the protrusion parts 17 and the extension parts 43 is not limited, and may be at least two or more.
- the extending portion 43 corresponds to the “third engaging portion” in the claims
- the protrusion 17 corresponds to the “third engaged portion” in the claims.
- the claw portion 17b When the opening 43a gets over the claw portion 17b, the claw portion 17b returns to its original state, the claw portion 17b is hooked on the upper surface of the extension portion 43, and the lower side of the main body portion 17a is inserted into the opening portion 43a. Thus, the cap member 4 is attached to the cylinder head cover 1.
- FIG. 8 is an explanatory view of a cylinder head cover 1, a seal member 3, and a cap member 4 according to a second modification, and (a) is a partially enlarged perspective view showing a state in which the cap member 4 is detached. (B) is a sectional view taken along the line II of (a), and (c) is a partially enlarged longitudinal sectional view showing a state in which the cap member 4 is mounted.
- a plurality of (four) protrusions 17, 17... are protruded upward from the support surface 14 by a predetermined length (in FIG. 8A). Only three are shown), and the point that the extended portion 43 is formed at the lower end of the outer periphery of the flange portion 42 is different from the first modified example described above.
- the extension part 43 is a part inserted between the peripheral wall part 15 and the protrusion part 17 of the cylinder head cover 1 as shown in FIG.
- the extending portion 43 has an annular portion 43b extending downward from the outer peripheral end of the flange portion 42 by a predetermined length, and a diameter from the inner peripheral lower end of the annular portion 43b.
- a plurality of (four) hooking portions 43c and 43c are provided that extend inward in the direction by a predetermined length and are provided at equal intervals in the circumferential direction of the annular portion 43b.
- the hook portion 43 c is a portion that is located below the claw portion 17 b in a state where the cap member 4 is fixed to the cylinder head cover 1. That is, in the present modification, the cap member 4 can be prevented from coming out of the cylinder head cover 1 by the hooking portion 43c and the projection portion 17.
- the length of the hooking portion 43 c along the circumferential direction is smaller than the interval between the adjacent protruding portions 17 and 17 and the length along the circumferential direction of the protruding portion 17. Further, the interval between the adjacent hooking portions 43 c and 43 c is larger than the length along the circumferential direction of the protruding portion 17.
- the extending portion 43 corresponds to the “third engaging portion” in the claims
- the protrusion 17 is the “third engaged portion” in the claims. Corresponds to “joint”.
- the hook portion 43 c is adjusted to a position where there is no protrusion 17 and is brought into contact with the support surface 14. At this time, a portion of the annular portion 43 b where the hooking portion 43 c is not formed is located between the peripheral wall portion 15 and the protruding portion 17.
- the cap member 4 is rotated and the hook portion 43 c of the extension portion 43 is inserted between the support surface 14 and the claw portion 17 b of the projection portion 17, the cap member 4 is attached to the cylinder head cover 1.
- the cap member 4 when removing the cap member 4 from the cylinder head cover 1, the cap member 4 is rotated so that the hooking portion 43 c moves to a position where there is no protrusion 17.
- the cap member 4 is lifted, the cap member 4 is detached from the cylinder head cover 1. Also by this modification, the working efficiency at the time of removal and attachment of the cap member 4 is improved. That is, since the cap member 4 can be detached and attached without using a tool, the maintainability is improved.
- FIG. 9 is an explanatory view of a cylinder head cover 1, a seal member 3, and a cap member 4 according to a third modification, and (a) is a partially enlarged perspective view showing a state in which the cap member 4 is detached. (B) is a partially enlarged perspective view showing a state in which the cap member 4 is mounted.
- a single protrusion 17 is formed to protrude upward by a predetermined length from the upper edge of the spark plug mounting hole 1a, and a single extension 43 having an opening 43a is formed as a flange.
- the fastening portion 44 is formed on the outer peripheral surface of the portion 42 and extends from the outer edge of the upper surface of the flange portion 42 to the radially outer side by a predetermined length, which is different from the first modified example.
- the protrusion 17 is formed in a straight line and is disposed on the opposite side of the fastening portion 13 with the spark plug attachment hole 1a interposed therebetween.
- the extension part 43 is formed in a substantially rectangular shape and has a rectangular opening 43a.
- the fastening portion 44 includes a curved rising portion 44a that protrudes upward by a predetermined length from the upper surface of the flange portion 42, and a horizontal mounting portion 44b that extends by a predetermined length radially outward from the upper end outer surface of the rising portion 44a. , Is composed of.
- a bolt insertion hole 44c penetrating along the vertical direction is formed in the attachment portion 44b.
- the flange part 21c of the plug top coil 21 is arrange
- the bolt B is inserted into the bolt insertion hole 13 a of the cylinder head cover 1, the bolt insertion hole 44 c of the cap member 4, and the bolt insertion hole 21 e of the plug top coil 21, and the bolt B is inserted into the nut N.
- the cylinder head cover 1, the cap member 4, and the plug top coil 21 are integrally connected. That is, the cap member 4 is fixed to the cylinder head cover 1 using a fastening means between the cylinder head cover 1 and the plug top coil 21.
- the extending portion 43 (opening 43a) and the fastening portion 44 correspond to the “third engaging portion” in the claims, and the protrusion 17 and the fastening portion 13 in the claims are the “first engagement portions”. Corresponds to “3 engaged parts”.
- the cap member 4 When the cap member 4 is attached to the cylinder head cover 1, when the protrusion 17 is inserted into the opening 43 a of the extension 43, the inner surface of the opening 43 a and the claw 17 b of the protrusion 17 come into contact with each other. However, when the extension part 43 is pushed in, the claw part 17b is elastically deformed so as to shrink radially inward.
- the claw portion 17b When the opening 43a gets over the claw portion 17b, the claw portion 17b returns to its original state, the claw portion 17b is hooked on the upper surface of the extension portion 43, and the lower side of the main body portion 17a is inserted into the opening portion 43a. .
- the bolt B is inserted into the bolt insertion hole 13 a of the cylinder head cover 1, the bolt insertion hole 44 c of the cap member 4, and the bolt insertion hole 21 e of the plug top coil 21, and the bolt B is screwed into the nut N. .
- the cap member 4 is attached to the cylinder head cover 1 through the above steps.
- Cylinder head cover (base material) 1a Spark plug mounting hole 11a Opening portion 12a Hole portion 12b Groove portion (first engaged portion) 12c Protrusion (second engaged portion) 13 Fastening portion 14 Support surface (third engaged portion) 15 peripheral wall (third engaged portion) 16, 17 Protrusion (third engaged portion) 2 Plug tube (tubular member) 3 Seal member 31 Base 32 Projection (first engagement portion) 33 Seal lip part 34 Grasping part 35 Groove part (second engaging part) 36 Cap seal portion 4 Cap member 41 Peripheral wall portion 42 Flange portion 42a Groove portion 43 Extension portion (third engagement portion) 43a Opening (third engagement portion) B Bolt N Nut
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Abstract
Description
また、把持部がシールリップ部よりも高剛性に形成されていることにより、シールリップ部を支持する支持力が高まるため、シールリップ部は筒状部材に対して十分な緊迫力を発揮して、シール部材と筒状部材との間が気密及び液密に確実にシールされる。
また、第2係合部の外周径は、第1係合部及び把持部の外周径よりも小さいと共に、当該第2係合部が、基部の把持部寄りに凹設されることにより、把持部の近傍に薄肉な部位が設けられるため、把持部を押圧する力が比較的小さくても、当該把持部を弾性変形させることが可能となり、シール部材の抜脱時の作業効率がより一層向上する。
また、キャップ部材は、シリンダヘッドカバーの第3被係合部に係合され、シール部材は、キャップ部材とシリンダヘッドカバーの第2被係合部との間に挟圧保持されるため、シール部材をシリンダヘッドカバーに確実に保持できると共に、組み付け時のシール部材のシール不良を抑制できる。
一方、キャップ部材をシリンダヘッドカバーから取り外す際には、延出部が突起部のない位置(隣り合う突起部の間)まで移動するように、キャップ部材を回転させてから持ち上げることにより、キャップ部材をシリンダヘッドカバーから外すことができるため、キャップ部材の抜脱時の作業効率が向上する。
すなわち、工具を用いることなくキャップ部材の脱着作業を行うことができるため、メンテナンス性が向上する。
一方、キャップ部材をシリンダヘッドカバーから取り外す際には、キャップ部材を持ち上げることにより、開口部から突起部が外れて、キャップ部材をシリンダヘッドカバーから外すことができるため、キャップ部材の抜脱時の作業効率が向上する。
すなわち、工具を用いることなくキャップ部材の脱着作業を行うことができるため、メンテナンス性が向上する。
図1に示すように、エンジンの一部を構成するシリンダヘッドカバー1には、上下方向(板厚方向)に貫通した円形状の点火プラグ取付孔1aが形成されており、この点火プラグ取付孔1aには、プラグチューブ2が挿入されている。シリンダヘッドカバー1とプラグチューブ2との間には、点火プラグ取付孔1aの全周に亘ってシール部材3が配置されており、このシール部材3の上側には、キャップ部材4が配置されている。
図3及び図4に示すように、点火プラグ取付孔1aの上縁部には、支持面14と、周壁部15と、複数(2つ)の突起部16,16と、が設けられている。
周壁部15は、支持面14の外周端から上側に所定長だけ延出して形成された円筒状の壁部である。周壁部15は、点火プラグ取付孔1aの上縁部を囲むように、支持面14から立設されている。
シール部材3は、基部31と、突部32と、シールリップ部33と、把持部34と、溝部35と、キャップシール部36(図2(b)参照)と、を有している。
キャップ部材4は、図4(a)に示すように、周壁部41と、フランジ部42と、複数(2つ)の延出部43,43と、を有している。
なお、図5は、シール部材3の抜脱工程を説明するための縦断面図である。
このとき、把持部34が径方向内側に縮まるように弾性変形し、突部32がシリンダヘッドカバー1の溝部12bから外れると共に、溝部35からシリンダヘッドカバー1の突部12cが外れる。すなわち、シール部材3とシリンダヘッドカバー1との係合状態が解除される。
続いて、キャップ部材4を回転させて、延出部43を支持面14と突起部16との間に挿入すると、キャップ部材4がシリンダヘッドカバー1に取り付けられる。
そして、キャップ部材4を持ち上げると、キャップ部材4がシリンダヘッドカバー1から外れる。
一方、キャップ部材4をシリンダヘッドカバー1から取り外す際には、延出部43が突起部16のない位置まで移動するように、キャップ部材4を回転させてから持ち上げることにより、キャップ部材4をシリンダヘッドカバー1から外すことができるため、キャップ部材4の抜脱時の作業効率が向上する。
すなわち、工具を用いることなくキャップ部材4の脱着作業を行うことができるため、メンテナンス性が向上する。
参照する図面において、図7は、第1変形例に係るシリンダヘッドカバー1、シール部材3及びキャップ部材4の説明図であり、(a)は、キャップ部材4が外れた状態を示す部分拡大斜視図であり、(b)は、キャップ部材4が装着された状態を示す部分拡大斜視図である。
突起部17は、上壁11の上面から上側に所定長だけ突出する本体部17aと、本体部17aの上部外周面から径方向外側に所定長だけ延出する爪部17bと、から構成されている。
本変形例によっても、キャップ部材4の抜脱時及び取付時の作業効率が向上する。すなわち、工具を用いることなくキャップ部材4の脱着作業を行うことができるため、メンテナンス性が向上する。
参照する図面において、図8は、第2変形例に係るシリンダヘッドカバー1、シール部材3及びキャップ部材4の説明図であり、(a)は、キャップ部材4が外れた状態を示す部分拡大斜視図であり、(b)は、(a)のI-I線断面図であり、(c)は、キャップ部材4が装着された状態を示す部分拡大縦断面図である。
このとき、環状部43bのうち、引掛部43cが形成されていない部分が、周壁部15と突起部17との間に位置する。
そして、キャップ部材4を持ち上げると、キャップ部材4がシリンダヘッドカバー1から外れる。
本変形例によっても、キャップ部材4の抜脱時及び取付時の作業効率が向上する。すなわち、工具を用いることなくキャップ部材4の脱着作業を行うことができるため、メンテナンス性が向上する。
参照する図面において、図9は、第3変形例に係るシリンダヘッドカバー1、シール部材3及びキャップ部材4の説明図であり、(a)は、キャップ部材4が外れた状態を示す部分拡大斜視図であり、(b)は、キャップ部材4が装着された状態を示す部分拡大斜視図である。
延出部43は、略矩形状に形成されており、矩形状の開口部43aを有している。
以上の工程を経て、キャップ部材4がシリンダヘッドカバー1に取り付けられる。
そして、爪部17bを弾性変形させながら、キャップ部材4を持ち上げると、開口部43aから突起部17が外れて、キャップ部材4がシリンダヘッドカバー1から外れる。
本変形例によっても、キャップ部材4の抜脱時及び取付時の作業効率が向上する。
1a 点火プラグ取付孔
11a 開口部
12a 孔部
12b 溝部(第1被係合部)
12c 突部(第2被係合部)
13 締結部
14 支持面(第3被係合部)
15 周壁部(第3被係合部)
16,17 突起部(第3被係合部)
2 プラグチューブ(筒状部材)
3 シール部材
31 基部
32 突部(第1係合部)
33 シールリップ部
34 把持部
35 溝部(第2係合部)
36 キャップシール部
4 キャップ部材
41 周壁部
42 フランジ部
42a 溝部
43 延出部(第3係合部)
43a 開口部(第3係合部)
B ボルト
N ナット
Claims (8)
- 基材に形成された取付孔に取り付けられ、前記取付孔に挿入される筒状部材と前記基材との間に配置される弾性変形可能なシール部材であって、
前記取付孔に挿入される基部と、
前記基部の外周面から径方向外側に突出形成され、前記取付孔の内周面に形成される第1被係合部に係合する第1係合部と、
前記筒状部材の外周面に弾接するシールリップ部と、
前記基部と前記シールリップ部との間に形成され、前記取付孔の一端側から突出する把持部と、
を備えたことを特徴とするシール部材。 - 前記把持部は、前記シールリップ部よりも高剛性に形成されていることを特徴とする請求の範囲第1項に記載のシール部材。
- 前記基部の前記把持部寄りの外周面に凹設され、外周径が前記第1係合部及び前記把持部の外周径よりも小さい第2係合部を更に備え、
前記第2係合部は、前記取付孔の内周面から径方向内側に突出形成される第2被係合部に係合することを特徴とする請求の範囲第1項又は第2項に記載のシール部材。 - シリンダヘッドの上部に取り付けられ、点火プラグ取付孔が形成されたシリンダヘッドカバーと、
前記点火プラグ取付孔に挿入され、内部に点火プラグを収容するプラグチューブと、
前記点火プラグ取付孔に取り付けられ、前記シリンダヘッドカバーと前記プラグチューブとの間に配置された弾性変形可能なシール部材と、
を備えたエンジンのプラグチューブシール構造であって、
前記シリンダヘッドカバーは、
前記点火プラグ取付孔の内周面に凹設された第1被係合部と、
前記点火プラグ取付孔の内周面から径方向内側に突出形成され、内周径が前記第1被係合部の内周径よりも小さい第2被係合部と、を有し、
前記シール部材は、
前記点火プラグ取付孔に挿入された基部と、
前記基部の外周面から径方向外側に突出形成され、前記第1被係合部に係合する第1係合部と、
前記プラグチューブの外周面に弾接するシールリップ部と、
前記基部と前記シールリップ部との間に形成され、前記点火プラグ取付孔から下側に突出すると共に、前記シールリップ部よりも高剛性に形成された把持部と、
前記基部の前記把持部寄りの外周面に凹設され、外周径が前記第1係合部及び前記把持部の外周径よりも小さいと共に、前記第2被係合部に係合する第2係合部と、を有することを特徴とするエンジンのプラグチューブシール構造。 - 前記シール部材の上面に当接するキャップ部材を更に備え、
前記シリンダヘッドカバーは、前記点火プラグ取付孔の上縁部に形成され、前記キャップ部材が係合する第3被係合部を更に有しており、
前記シール部材は、前記キャップ部材と前記第2被係合部との間に挟圧保持されていることを特徴とする請求の範囲第4項に記載のエンジンのプラグチューブシール構造。 - 前記キャップ部材は、前記シール部材よりも高剛性に形成された環状の部材であり、当該キャップ部材の外周面から径方向外側に突出し、前記点火プラグ取付孔の内周径よりも大きい外周径に形成されたフランジ部と、前記第3被係合部に係合する第3係合部と、を有しており、
前記第3係合部は、
前記フランジ部の外周面から径方向外側に延出すると共に、前記フランジ部の周方向に沿って互いに間隔を空けて設けられた少なくとも2つの延出部であり、
前記第3被係合部は、
前記点火プラグ取付孔の上縁部に沿って延在し、前記延出部を下側から支持する環状の支持面と、
前記支持面の外周端から上側に延出形成された周壁部と、
前記周壁部の上端から径方向内側に突出し、前記周壁部の周方向に沿って互いに間隔を空けて設けられた少なくとも2つの突起部と、を有しており、
前記延出部は、前記支持面と前記突起部との間に挿入可能に構成されていることを特徴とする請求の範囲第5項に記載のエンジンのプラグチューブシール構造。 - 前記キャップ部材は、前記シール部材よりも高剛性に形成された環状の部材であり、当該キャップ部材の外周面から径方向外側に突出し、前記点火プラグ取付孔の内周径よりも大きい外周径に形成されたフランジ部と、前記第3被係合部に係合する第3係合部と、を有しており、
前記第3係合部は、
前記フランジ部の外周面から径方向外側に延出すると共に、前記フランジ部の周方向に沿って互いに間隔を空けて設けられた少なくとも2つの延出部と、
前記各延出部に形成された開口部と、を有し、
前記第3被係合部は、
前記点火プラグ取付孔の上縁部から上側に突出し、前記点火プラグ取付孔の周方向に沿って互いに間隔を空けて設けられた少なくとも2つの突起部であり、
前記開口部は、前記突起部を挿入可能に構成されていることを特徴とする請求の範囲第5項に記載のエンジンのプラグチューブシール構造。 - 前記シール部材は、前記基部の上端から上側に突出形成されたキャップシール部を更に有し、
前記フランジ部の下面には、前記キャップシール部が挿入され、下方に開口する凹状の溝部が形成されており、
前記キャップ部材は、前記キャップシール部が上下方向に縮まるように弾性変形した状態で、前記シリンダヘッドカバーに固定されていることを特徴とする請求の範囲第6項又は請求の範囲第7項に記載のエンジンのプラグチューブシール構造。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013508858A JP5677565B2 (ja) | 2011-04-06 | 2012-04-02 | シール部材及びエンジンのプラグチューブシール構造 |
EP12768118.7A EP2696114B1 (en) | 2011-04-06 | 2012-04-02 | Seal member, and plug tube seal structure for engine |
US14/110,107 US9169803B2 (en) | 2011-04-06 | 2012-04-02 | Seal member, and plug tube seal structure for engine |
CN201280017251.XA CN103492770B (zh) | 2011-04-06 | 2012-04-02 | 密封部件和发动机的火花塞管密封结构 |
Applications Claiming Priority (2)
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JP2011-084156 | 2011-04-06 | ||
JP2011084156 | 2011-04-06 |
Publications (1)
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WO2012137718A1 true WO2012137718A1 (ja) | 2012-10-11 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2012/058885 WO2012137718A1 (ja) | 2011-04-06 | 2012-04-02 | シール部材及びエンジンのプラグチューブシール構造 |
Country Status (5)
Country | Link |
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US (1) | US9169803B2 (ja) |
EP (1) | EP2696114B1 (ja) |
JP (1) | JP5677565B2 (ja) |
CN (1) | CN103492770B (ja) |
WO (1) | WO2012137718A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US11270348B2 (en) | 2017-05-19 | 2022-03-08 | Abl Ip Holding, Llc | Systems and methods for tracking products transported in shipping containers |
GB2581398B (en) | 2019-02-18 | 2021-03-31 | Caterpillar Energy Solutions Gmbh | Seal and method for a fuel gas supply to a pre-combustion chamber |
WO2021065129A1 (ja) * | 2019-09-30 | 2021-04-08 | Nok株式会社 | 密封装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0723861U (ja) * | 1993-10-08 | 1995-05-02 | エヌオーケー株式会社 | 密封装置 |
JP2003035365A (ja) * | 2001-07-24 | 2003-02-07 | Koyo Sealing Techno Co Ltd | シールリング |
JP2005155455A (ja) * | 2003-11-26 | 2005-06-16 | Honda Motor Co Ltd | 燃料噴射弁のシール構造 |
JP2007085414A (ja) * | 2005-09-21 | 2007-04-05 | Nok Corp | 密封装置 |
JP2007321605A (ja) * | 2006-05-31 | 2007-12-13 | Mahle Filter Systems Japan Corp | ヘッドカバーのシール構造 |
JP4198708B2 (ja) | 2005-10-28 | 2008-12-17 | 小島プレス工業株式会社 | 合成樹脂製のシリンダヘッドカバーに対するプラグチューブガスケットの取付構造 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2459732A1 (de) * | 1974-12-18 | 1976-06-24 | Wolfgang Dr Kranert | Dichtelement |
JPH0313582Y2 (ja) * | 1985-11-18 | 1991-03-27 | ||
DD249732A1 (de) | 1986-06-03 | 1987-09-16 | Verkehrs & Tiefbau Kom | Dichtung |
JP2587793Y2 (ja) * | 1992-04-28 | 1998-12-24 | 株式会社テネックス | ロッカーカバー |
JP2914195B2 (ja) * | 1994-10-14 | 1999-06-28 | 住友電装株式会社 | 内燃機関のプラグキャップ |
JP2001263159A (ja) * | 2000-03-16 | 2001-09-26 | Tennex Corp | 内燃機関のシリンダヘッドカバー用オイルシール |
US6390042B1 (en) * | 2000-05-05 | 2002-05-21 | Delphi Technologies, Inc. | Self-sealing releasable and reusable plug |
JP4014423B2 (ja) * | 2001-03-09 | 2007-11-28 | 株式会社マーレ フィルターシステムズ | シリンダヘッドカバーにおける点火栓チューブ挿入部のシール装置 |
WO2006011552A1 (ja) * | 2004-07-28 | 2006-02-02 | Hitachi, Ltd. | 内燃機関用点火コイル装置 |
WO2006077677A1 (ja) | 2005-01-21 | 2006-07-27 | Nok Corporation | ガスケット |
US7854433B2 (en) * | 2005-02-24 | 2010-12-21 | Freudenberg-Nok General Partnership | Dynamic seal |
-
2012
- 2012-04-02 CN CN201280017251.XA patent/CN103492770B/zh active Active
- 2012-04-02 EP EP12768118.7A patent/EP2696114B1/en not_active Not-in-force
- 2012-04-02 US US14/110,107 patent/US9169803B2/en active Active
- 2012-04-02 WO PCT/JP2012/058885 patent/WO2012137718A1/ja active Application Filing
- 2012-04-02 JP JP2013508858A patent/JP5677565B2/ja active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0723861U (ja) * | 1993-10-08 | 1995-05-02 | エヌオーケー株式会社 | 密封装置 |
JP2003035365A (ja) * | 2001-07-24 | 2003-02-07 | Koyo Sealing Techno Co Ltd | シールリング |
JP2005155455A (ja) * | 2003-11-26 | 2005-06-16 | Honda Motor Co Ltd | 燃料噴射弁のシール構造 |
JP2007085414A (ja) * | 2005-09-21 | 2007-04-05 | Nok Corp | 密封装置 |
JP4198708B2 (ja) | 2005-10-28 | 2008-12-17 | 小島プレス工業株式会社 | 合成樹脂製のシリンダヘッドカバーに対するプラグチューブガスケットの取付構造 |
JP2007321605A (ja) * | 2006-05-31 | 2007-12-13 | Mahle Filter Systems Japan Corp | ヘッドカバーのシール構造 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2696114A4 |
Also Published As
Publication number | Publication date |
---|---|
CN103492770B (zh) | 2016-04-13 |
JP5677565B2 (ja) | 2015-02-25 |
EP2696114A4 (en) | 2014-10-15 |
EP2696114A1 (en) | 2014-02-12 |
CN103492770A (zh) | 2014-01-01 |
US9169803B2 (en) | 2015-10-27 |
EP2696114B1 (en) | 2017-03-01 |
JPWO2012137718A1 (ja) | 2014-07-28 |
US20140020647A1 (en) | 2014-01-23 |
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