WO2009123130A1 - Sealing structure and sealing device - Google Patents

Sealing structure and sealing device Download PDF

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Publication number
WO2009123130A1
WO2009123130A1 PCT/JP2009/056520 JP2009056520W WO2009123130A1 WO 2009123130 A1 WO2009123130 A1 WO 2009123130A1 JP 2009056520 W JP2009056520 W JP 2009056520W WO 2009123130 A1 WO2009123130 A1 WO 2009123130A1
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WO
WIPO (PCT)
Prior art keywords
inclined surface
metal gasket
chamfered portion
chamfered
liquid seal
Prior art date
Application number
PCT/JP2009/056520
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French (fr)
Japanese (ja)
Inventor
丹治功
松本共永
今井勝麿
小山智幸
Original Assignee
Nok株式会社
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Publication date
Application filed by Nok株式会社 filed Critical Nok株式会社
Priority to JP2010505906A priority Critical patent/JP5051297B2/en
Publication of WO2009123130A1 publication Critical patent/WO2009123130A1/en

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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

Definitions

  • the present invention relates to a sealing structure and a sealing device for sealing a gap between three members.
  • An object of the present invention is to provide a sealing structure and a sealing device in which leakage of a liquid seal is suppressed.
  • the present invention employs the following means in order to solve the above problems.
  • the sealing structure of the present invention is A first member having a first surface and a second surface provided on one end side of the first surface; A second member having a third surface facing the first surface, and a fourth surface provided on one end side of the third surface; A third member having a fifth surface opposite to the second surface and the fourth surface; A metal gasket that seals a gap between the first surface and the third surface; An elastic gasket for sealing the gap between the second surface and the fourth surface and the fifth surface; A liquid seal filled in a gap formed between the metal gasket and the elastic gasket in the vicinity of the joining portion of the first member, the second member, and the third member; A sealing structure comprising: A chamfer is provided between the first surface and the second surface of the first member and between the third surface and the fourth surface of the second member, respectively.
  • the metal gasket protrudes toward the third member side from a corner portion between the chamfered portion and the first surface of the first member and a corner portion between the chamfered portion and the third surface of the second member. And arranged to The elastic gasket is provided with a protruding portion that protrudes toward the metal gasket and is in close contact with the metal gasket.
  • the protrusion is A first inclined surface that forms at least a part of the chamfered portion provided in the first member and forms a seal portion that prevents leakage of the liquid seal; A second inclined surface that forms a seal portion that at least partially adheres to the chamfered portion provided in the second member and prevents leakage of the liquid seal; It is provided between these 1st inclined surfaces and 2nd inclined surfaces, and is provided with the recessed part which stores a liquid seal.
  • the sealing device of the present invention comprises: A first member having a first surface and a second surface provided on one end side of the first surface; A second member having a third surface facing the first surface, and a fourth surface provided on one end side of the third surface;
  • a sealing device used for an apparatus comprising: a third member having a fifth surface opposite to the second surface and the fourth surface; A metal gasket that seals a gap between the first surface and the third surface; An elastic gasket for sealing the gap between the second surface and the fourth surface and the fifth surface; A liquid seal filled in a gap formed between the metal gasket and the elastic gasket in the vicinity of the joining portion of the first member, the second member, and the third member;
  • a sealing device comprising: Chamfered portions are provided between the first surface and the second surface of the first member and between the third surface and the fourth surface of the second member, respectively.
  • the metal gasket protrudes toward the third member side from a corner portion between the chamfered portion and the first surface of the first member and a corner portion between the chamfered portion and the third surface of the second member. And arranged to The elastic gasket is provided with a protruding portion that protrudes toward the metal gasket and is in close contact with the metal gasket.
  • the protrusion is A first inclined surface that forms at least a part of the chamfered portion provided in the first member and forms a seal portion that prevents leakage of the liquid seal; A second inclined surface that forms a seal portion that at least partially adheres to the chamfered portion provided in the second member and prevents leakage of the liquid seal; It is provided between these 1st inclined surfaces and 2nd inclined surfaces, and is provided with the recessed part which stores a liquid seal.
  • the gap between the first member and the second member is sealed by the metal gasket. Further, the gap between the first member and the second member and the third member is sealed by an elastic gasket. Then, in the vicinity of the joining portion of the first member, the second member, and the third member, a gap formed between the metal gasket and the elastic gasket is sealed with a liquid seal. Therefore, all the gaps between the members can be sealed.
  • the present invention by adopting a configuration including a recess for storing the liquid seal, leakage of the liquid seal can be suppressed as compared with the case where the liquid seal is simply applied to the planar portion.
  • at least a part of the inclined surfaces (first inclined surface and second inclined surface) of the protruding portion provided in the elastic gasket is provided in the first member and the second member, respectively.
  • a seal portion is formed in close contact with the surfaces (first inclined surface and second inclined surface) to prevent leakage of the liquid seal. Therefore, leakage of the liquid seal can be more reliably suppressed.
  • leakage of the liquid seal can be suppressed, workability in assembling the three members and each gasket is improved. For example, the work of wiping off the leaked liquid seal can be reduced.
  • the inclination angle of the chamfered portion provided in the first member and the inclination angle of the first inclined surface provided in the protruding portion are set to be approximately the same, and the first inclined surface faces the chamfered portion provided in the first member. Configured to contact, The inclination angle of the chamfered portion provided in the second member and the inclination angle of the second inclined surface provided in the protruding portion are set to be approximately the same, and the second inclined surface faces the chamfered portion provided in the second member. It is good to be comprised so that it may contact.
  • the inclination angle of the first inclined surface of the projecting portion is set so that the corner portion between the chamfered portion provided on the first member and the second surface is in line contact with the first inclined surface.
  • the inclination angle of the second inclined surface of the protruding portion is set so that the corner portion between the chamfered portion and the fourth surface provided in the second member is in line contact with the second inclined surface. Is also suitable.
  • angular part between the chamfered part provided in the 1st member and the 2nd surface was line-contacted with respect to the 1st inclined surface.
  • the corner between the chamfered portion and the fourth surface provided in the second member is in line contact with the second inclined surface.
  • the liquid seal which flowed out from the crevice will be between the surface of a metal gasket, the 1st inclined surface, and a chamfered part, and between the surface of a metal gasket, the 2nd inclined surface, and a chamfered part. It can be inserted. Thereby, the sealing performance of the joint part of 3 members is improved. And since the front-end
  • FIG. 1 is an exploded perspective view of members constituting a sealing structure according to Embodiment 1 of the present invention.
  • FIG. 2 is a partially enlarged perspective view of the elastic gasket according to the first embodiment of the present invention.
  • FIG. 3 is a partially enlarged front view of the elastic gasket according to the first embodiment of the present invention.
  • FIG. 4 is a partially enlarged schematic cross-sectional view (a view showing a state of assembling) of the sealing structure according to the first embodiment of the present invention.
  • FIG. 5 is a partially enlarged schematic cross-sectional view (a view showing a state after assembly) of the sealing structure according to Embodiment 1 of the present invention.
  • FIG. 1 is an exploded perspective view of members constituting a sealing structure according to Embodiment 1 of the present invention.
  • FIG. 2 is a partially enlarged perspective view of the elastic gasket according to the first embodiment of the present invention.
  • FIG. 3 is a partially enlarged front view of the elastic gasket according to the first embodiment of the
  • FIG. 6 is a partially enlarged schematic cross-sectional view (a diagram showing a state during assembly) of the sealing structure according to Embodiment 2 of the present invention.
  • FIG. 7 is a partially enlarged schematic cross-sectional view (a view showing a state after assembly) of the sealing structure according to Embodiment 2 of the present invention.
  • SYMBOLS 10 Metal gasket 20 Elastic body gasket 21, 25 Protrusion part 21a, 25a 1st inclined surface 21b, 25b 2nd inclined surface 21c, 25c Recessed part 21d Side wall surface 21X, 25X 1st part 21Y, 25Y 2nd part 30 Liquid seal DESCRIPTION OF SYMBOLS 100 Cylinder block 101 1st surface 102 2nd surface 103 Chamfering part 200 Cylinder head 201 3rd surface 202 4th surface 203 Chamfering part 300 Chain cover 301 5th surface E101, E102, E201, E202 Corner
  • Example 1 A sealing structure and a sealing device according to Example 1 of the present invention will be described with reference to FIGS.
  • the structure and sealing device for sealing the gap between the cylinder block (first member), the cylinder head (second member), and the chain cover (third member) constituting the engine structure of the internal combustion engine. Will be described as an example.
  • FIG. 1 is an exploded perspective view of members constituting a sealing structure according to Embodiment 1 of the present invention.
  • the liquid seal is omitted.
  • FIG. 2 is a partially enlarged perspective view of the elastic gasket according to the first embodiment of the present invention.
  • FIG. 3 is a partially enlarged front view of the elastic gasket according to the first embodiment of the present invention.
  • 4 and 5 are partially enlarged schematic cross-sectional views of the sealing structure according to Embodiment 1 of the present invention. 4 shows a state during the assembly, and FIG. 5 shows a state after the assembly.
  • “assembly” means assembly of three members (cylinder block, cylinder head, and chain cover).
  • the sealing structure according to the present embodiment is configured to seal a gap between three members, that is, the cylinder block 100, the cylinder head 200, and the chain cover 300.
  • the metal gasket 10 seals the gap between the cylinder block 100 and the cylinder head 200
  • the elastic gasket 20 seals the gap between the cylinder block 100 and the cylinder head 200 and the chain cover 300. It is configured to seal.
  • a gap formed between the metal gasket 10 and the elastic gasket 20 is configured so that the liquid seal 30 seals in the vicinity of the joining portion of these three members.
  • the cylinder block 100 is a box-shaped member having openings on the upper surface and the front end surface in FIG.
  • the upper surface of the cylinder block 100 is referred to as a first surface 101
  • the front end surface is referred to as a second surface 102.
  • the second surface 102 is provided on one end side of the first surface 101.
  • a chamfered portion 103 is provided between the first surface 101 and the second surface 102.
  • the cylinder head 200 is a box-shaped member having openings on the lower surface and the front end surface in FIG.
  • the lower surface of the cylinder head 200 is referred to as a third surface 201
  • the front end surface is referred to as a fourth surface 202.
  • a fourth surface 202 is provided on one end side of the third surface 201.
  • a chamfered portion 203 is provided between the third surface 201 and the fourth surface 202.
  • the third surface 201 of the cylinder head 200 is configured to face the first surface 101 of the cylinder block 100. Further, the second surface 102 of the cylinder block 100 and the fourth surface 202 of the cylinder head 200 are configured so as to be on the same plane by design.
  • the chain cover 300 is a box-shaped member having an opening (not shown) on the back end face in FIG.
  • the rear side end surface of the chain cover 300 is referred to as a fifth surface 301.
  • the fifth surface 301 is configured to face the second surface 102 of the cylinder block 100 and the fourth surface 202 of the cylinder head 200.
  • the metal gasket 10 is in close contact with the first surface 101 of the cylinder block 100 and the third surface 201 of the cylinder head 200, and seals the gap between the first surface 101 and the third surface 201.
  • the elastic gasket 20 is in close contact with the second surface 102 of the cylinder block 100, the fourth surface 202 of the cylinder head 200, and the fifth surface 301 of the chain cover 300, and the second surface 102, the fourth surface 202, and the The gap between the five surfaces 301 is sealed.
  • the metal gasket 10 has a chain cover more than the corner E101 between the chamfered portion 103 and the first surface 101 in the cylinder block 100 and the corner E201 between the chamfered portion 203 and the third surface 201 in the cylinder head 200. It arrange
  • the elastic gasket 20 is provided with a protruding portion 21 that protrudes toward the metal gasket 10 and is in close contact with the end face of the metal gasket 10.
  • the protruding portions 21 are provided with inclined surfaces at positions facing the chamfered portion 103 in the cylinder block 100 and positions facing the chamfered portion 203 in the cylinder head 200, respectively.
  • these inclined surfaces are referred to as a first inclined surface 21a and a second inclined surface 21b, respectively.
  • the inclination angle of the chamfered portion 103 provided in the cylinder block 100 and the inclination angle of the first inclined surface 21a provided in the protruding portion 21 are set to be approximately the same. Further, the inclination angle of the chamfered portion 203 provided in the cylinder head 200 and the inclination angle of the second inclined surface 21 b provided in the protruding portion 21 are set to be approximately the same.
  • a concave portion 21c having an opening on the metal gasket 10 side is provided at the center of the protruding portion 21. Accordingly, the recess 21c is provided between the first inclined surface 21a and the second inclined surface 21b.
  • the metal gasket 10 is disposed between the first surface 101 of the cylinder block 100 and the third surface 201 of the cylinder head 200. Thereby, the clearance gap between the 1st surface 101 and the 3rd surface 201 is sealed by the metal gasket 10 (refer FIG. 4).
  • the liquid seal 30 is injected into the concave portion 21 c provided in the protruding portion 21 of the elastic gasket 20.
  • the injection amount of the liquid seal 30 is an amount that fills a gap formed between the inner wall surface of the recess 21c in the elastic gasket 20 and the vicinity of the tip of the metal gasket 10 when the three members are assembled. It is set a little more than.
  • the chain cover 300 is fixed to the cylinder block 100 and the cylinder head 200 while the elastic gasket 20 is in close contact with the fifth surface 301 of the chain cover 300.
  • a region T indicates a region where the end face of the metal gasket 10 is in close contact.
  • the pair of side wall surfaces 21d in the protruding portion 21 are compressed toward the chain cover 300 side by the end surface of the metal gasket 10. Accordingly, a part of the end face of the metal gasket 10 enters the recess 21c as shown in FIG.
  • the first inclined surface 21 a of the protruding portion 21 is in close contact with the chamfered portion 103 in the cylinder block 100 to form a seal portion S 1 that prevents the liquid seal 30 from leaking.
  • the inclination angle of the chamfered portion 103 and the inclination angle of the first inclined surface 21a are set to be approximately the same, they contact each other in a surface contact state.
  • the surface contact portion corresponds to the seal portion S1.
  • the second inclined surface 21b of the protruding portion 21 is in close contact with the chamfered portion 203 of the cylinder head 200 to form a seal portion S2 that prevents the liquid seal 30 from leaking. And since the inclination angle of the chamfered portion 203 and the inclination angle of the second inclined surface 21b are set to be approximately the same, they contact each other in a surface contact state. This surface contact portion corresponds to the seal portion S2.
  • the gap between the cylinder block 100 and the cylinder head 200 is sealed by the metal gasket 10. Further, the gaps between the cylinder block 100 and the cylinder head 200 and the chain cover 300 are sealed by the elastic gasket 20. A gap formed between the metal gasket 10 and the elastic gasket 20 is sealed by the liquid seal 30 in the vicinity of the joining portion of the cylinder block 100, the cylinder head 200, and the chain cover 300. Therefore, all the gaps between the members can be sealed.
  • the elastic gasket 20 is provided with the concave portion 21c for storing the liquid seal 30, the liquid seal can be compared with a case where the liquid seal is simply applied to the planar portion. Leakage can be suppressed.
  • the liquid seal 30 is injected into the concave portion 21c, and the liquid seal 30 is stored in the concave portion 21c, and the liquid seal 30 is in a semi-dry state while the chain cover 300 is removed from the cylinder block. 100 and cylinder head 200 are fixed. In this process, a gap formed between the inner wall surface of the recess 21 c in the elastic gasket 20 and the vicinity of the tip of the metal gasket 10 is filled with the liquid seal 30.
  • the injection amount of the liquid seal 30 is set slightly larger than the amount of filling the gap. Accordingly, a part of the liquid seal 30 may leak out of the recess 21c.
  • the first inclined surface 21a of the protruding portion 21 provided on the elastic gasket 20 is in close contact with the chamfered portion 103 of the cylinder block 100 to form the seal portion S1. Therefore, the liquid seal 30 can be prevented from leaking to the seal surface between the cylinder block 100 and the elastic gasket 20 (the contact surface between the second surface 102 and the elastic gasket 20).
  • the second inclined surface 21b of the protruding portion 21 provided on the elastic gasket 20 is in close contact with the chamfered portion 203 of the cylinder head 200 to form a seal portion S2. Therefore, the liquid seal 30 can be prevented from leaking to the seal surface between the cylinder head 200 and the elastic gasket 20 (the close contact surface between the fourth surface 202 and the elastic gasket 20).
  • the first inclined surface 21 a in the protruding portion 21 is pressed against the chamfered portion 103 in the cylinder block 100.
  • the second inclined surface 21b of the protruding portion 21 is pressed against the chamfered portion 203 of the cylinder head 200.
  • FIG. Accordingly, there is no gap between the tip of the second portion 21Y and the surface of the metal gasket 10, or a slight gap is present even if there is a gap.
  • the liquid seal 30 can be suppressed to some extent from flowing out of the recess 21c.
  • the sealing structure and the sealing device according to the present embodiment leakage of the liquid seal 30 can be suppressed. Therefore, the workability in assembling the three members and the gaskets is improved (for example, the wiping work of the leaked liquid seal 30 can be reduced).
  • sticker in a present Example the case where the liquid seal
  • the metal gasket 10 is disposed near the tip of the metal gasket 10.
  • a liquid seal 30 is applied. While the liquid seal 30 is in a semi-dry state, the chain cover 300 is fixed to the cylinder block 100 and the cylinder head 200 while the elastic gasket 20 is in close contact with the fifth surface 301 of the chain cover 300. Even in such a case, the gap formed between the inner wall surface of the recess 21 c in the elastic gasket 20 and the vicinity of the tip of the metal gasket 10 is filled with the liquid seal 30. Therefore, the same effect as in the case of the present embodiment can be obtained.
  • Example 2 shows the second embodiment of the present invention.
  • the first embodiment the case where the inclined surface provided in the projecting portion is in surface contact with the chamfered portion provided in the cylinder block and the chamfered portion provided in the cylinder head is shown.
  • the case where the said chamfer part (more specifically, the corner
  • FIG. 6 and 7 are partially enlarged schematic cross-sectional views of the sealing structure according to Example 2 of the present invention.
  • FIG. 6 shows a state during assembly
  • FIG. 7 shows a state after assembly.
  • assembly means assembly of three members (cylinder block, cylinder head, and chain cover).
  • the configuration of the elastic gasket 20 is different from that in the first embodiment.
  • Other configurations are the same as those of the first embodiment.
  • the elastic gasket 20 in the present embodiment is also provided with a protruding portion 25 that protrudes toward the metal gasket 10 and is in close contact with the end face of the metal gasket 10 as in the first embodiment.
  • the protrusions 25 are provided with inclined surfaces at positions facing the chamfered portion 103 in the cylinder block 100 and positions facing the chamfered portion 203 in the cylinder head 200, respectively.
  • these inclined surfaces are referred to as a first inclined surface 25a and a second inclined surface 25b, respectively.
  • the first inclined surface 25a of the protruding portion 25 is a corner between the chamfered portion 103 and the second surface 102 provided in the cylinder block 100 with respect to the first inclined surface 25a.
  • E102 is configured to be in line contact.
  • the inclination angle of the first inclined surface 25a (inclination angle with respect to the seal surface between the cylinder block 100 and the elastic gasket 20 (the contact surface between the second surface 102 and the elastic gasket 20)) is The chamfered portion 103 is set to be smaller than that.
  • the lower end of the first inclined surface 25a is set to be lower in FIGS. 6 and 7 than the corner E102.
  • the corner E102 of the cylinder block 100 is in line contact with the first inclined surface 25a of the protrusion 25.
  • the 1st inclined surface 25a is pressed by the corner
  • the dimensions of the respective parts are set so that the tip of the first portion 25X is in close contact with the surface of the metal gasket 10 due to the bending deformation.
  • the second inclined surface 25b of the projecting portion 25 is in line contact with the second inclined surface 25b at a corner E202 between the chamfered portion 203 provided on the cylinder head 200 and the fourth surface 202. It is configured as follows. In order to realize this, the inclination angle of the second inclined surface 25b (inclination angle with respect to the seal surface between the cylinder head 200 and the elastic gasket 20 (the contact surface between the fourth surface 202 and the elastic gasket 20)) is set. The chamfered portion 203 is set to be smaller than that. Further, the upper end of the second inclined surface 25b is set so as to be on the upper side in FIGS.
  • the corner E202 of the cylinder head 200 is in line contact with the second inclined surface 25b of the protrusion 25.
  • the 2nd inclined surface 25b is pressed by the corner
  • the dimensions of the respective parts are set so that the tip of the second portion 25Y is in close contact with the surface of the metal gasket 10 due to the bending deformation.
  • a recess 25c having an opening on the metal gasket 10 side is provided as in the case of the first embodiment. Accordingly, the recess 25c is provided between the first inclined surface 25a and the second inclined surface 25b.
  • the corner portion E102 (that is, the end portion of the chamfered portion 103) of the cylinder block 100 is in close contact with the first inclined surface 25a of the protruding portion 25, and the seal portion that prevents the liquid seal 30 from leaking. S3 is formed.
  • the corner E102 contacts the first inclined surface 25a in a line contact state. This line contact portion corresponds to the seal portion S3.
  • the corner portion E202 of the cylinder head 200 (that is, the end portion of the chamfered portion 203) is in close contact with the second inclined surface 25b of the protruding portion 25, thereby forming a seal portion S4 that prevents the liquid seal 30 from leaking.
  • the corner E202 is in line contact with the second inclined surface 25b. This line contact portion corresponds to the seal portion S4.
  • Example 2 By adopting the configuration as described above, the same effects as in the case of the first embodiment can be obtained in this embodiment.
  • a configuration is adopted in which leakage of the liquid seal 30 is suppressed by the seal portions S3 and S4 that are in a line contact state.
  • the seal portion In general, in the case of line contact, the seal portion is more likely to have a higher surface pressure peak than in the case of surface contact, and the sealing performance can be improved. Therefore, the sealing performance of Example 2 can be made higher than that of Example 1.
  • the tip of the first portion 25X and the tip of the second portion 25Y are in close contact with the surface of the metal gasket 10 during assembly. Therefore, the liquid seal 30 that has flowed out from the recess 25c is placed between the surface of the metal gasket 10, the first inclined surface 25a, and the chamfered portion 103, and between the surface of the metal gasket 10, the second inclined surface 25b, and the chamfered portion 203. It can be inserted between. Thereby, the sealing performance of the joint part of 3 members is improved.
  • tip of the 2nd part 25Y are a line contact state with respect to the surface of the metal gasket 10, it aims at such an effect and is liquid-sealed actively from the recessed part 25c. Even if 30 is caused to flow out, leakage of the liquid seal 30 can be suppressed. Therefore, the leakage of the liquid seal 30 can be suppressed while enhancing the sealing performance of the joint portion of the three members. Thus, leakage of the liquid seal (leakage to the contact surface between the second surface 102 and the elastic gasket 20 and the contact surface between the fourth surface 202 and the elastic gasket 20) can be more reliably suppressed.

Abstract

A sealing structure and a sealing device which minimize leakage of a liquid seal therefrom. Chamfered sections (103, 203) are respectively formed between a first surface (101) and a second surface (102) of a cylinder block (100) and between a third surface (201) and a fourth surface (202) of a cylinder head (200). A gasket (20) constructed from an elastic body is provided with a projection (21) projecting toward a metal gasket (10) and in close contact with the metal gasket (10). The projection (21) is provided with a first slope surface (21a) at least a part of which is in close contact with the chamfered section (103) of the cylinder block (100) and which forms a seal section (S1) for preventing leakage of a liquid seal (30), a second slope surface (21b) at least a part of which is in close contact with the chamfered section (203) of the cylinder head (200) and which forms a seal section (S2) for preventing leakage of the liquid seal (30), and a recess (21c) in which the liquid seal (30) is contained.

Description

密封構造及び密封装置Sealing structure and sealing device
　本発明は、３部材間の隙間を密封する密封構造及び密封装置に関するものである。 The present invention relates to a sealing structure and a sealing device for sealing a gap between three members.
　３部材間の隙間を密封する場合、特に３部材の合わさり部付近を如何に密封するかが密封性に大きく影響する。従来、この合わさり部付近の密封方法として、３部材のうちの２部材間の隙間を封止する金属製ガスケットに隣接して弾性体製ガスケットを設けたり、合わさり部付近に生じてしまう隙間を封止するために液状シールを充填したりする技術が知られている（特許文献１，２参照）。 When sealing the gap between the three members, how to seal the vicinity of the mating part of the three members particularly affects the sealing performance. Conventionally, as a sealing method in the vicinity of the mating portion, an elastic gasket is provided adjacent to the metal gasket that seals the gap between two of the three members, or the gap that occurs in the vicinity of the mating portion is sealed. A technique of filling a liquid seal in order to stop is known (see Patent Documents 1 and 2).
　前者の場合には、２部材間の隙間を金属製ガスケットと弾性体製ガスケットによって密封することになる。従って、これらの弾性反発力の違いから、安定的な密封性を得るのが難しいという問題がある。これに伴い、例えば、金属製ガスケットにおけるビード設計が複雑になってしまうというような問題も生じる。そのため、一般的には、後者の場合の方が安定的な密封性が得られ易い。 In the former case, the gap between the two members is sealed with a metal gasket and an elastic gasket. Therefore, there is a problem that it is difficult to obtain a stable sealing property due to the difference in the elastic repulsion force. In connection with this, the problem that the bead design in a metal gasket will become complicated will arise, for example. Therefore, in general, the latter case is more likely to provide stable sealing performance.
　しかしながら、後者の場合には、装置組立時等において、塗布した液状シールが漏れ出してしまうことがある。そのため、漏れ出した液状シールをふき取る手間がかかるなど、組立作業性が悪いという欠点がある。
特許第３５７２２０１号公報 特開２００２－２７６４６２号公報 However, in the latter case, the applied liquid seal may leak when the apparatus is assembled. For this reason, there is a drawback that the assembling workability is poor, for example, it takes time to wipe off the leaked liquid seal.
Japanese Patent No. 3572201 JP 2002-276462 A
　本発明の目的は、液状シールの漏れの抑制を図った密封構造及び密封装置を提供することにある。 An object of the present invention is to provide a sealing structure and a sealing device in which leakage of a liquid seal is suppressed.
　本発明は、上記課題を解決するために以下の手段を採用した。 The present invention employs the following means in order to solve the above problems.
　すなわち、本発明の密封構造は、
　第１面と、第１面の一端側に設けられる第２面とを有する第１部材と、
　第１面に対向する第３面と、第３面の一端側に設けられる第４面とを有する第２部材と、
　第２面及び第４面に対向する第５面を有する第３部材と、
　第１面と第３面との間の隙間を密封する金属製ガスケットと、
　第２面及び第４面と第５面との間の隙間を密封する弾性体製ガスケットと、
　第１部材と第２部材と第３部材との合わさり部付近において、前記金属製ガスケットと弾性体製ガスケットとの間にできる隙間内に充填される液状シールと、
　を備える密封構造であって、
　第１部材における第１面と第２面との間、及び第２部材における第３面と第４面との間にはそれぞれ面取り部が設けられ、
　前記金属製ガスケットは、第１部材における面取り部と第１面との間の角部、及び第２部材における面取り部と第３面との間の角部よりも第３部材側に向かって突出するように配置されると共に、
　前記弾性体製ガスケットには、前記金属製ガスケット側に向かって突出し、該金属製ガスケットに密着する突出部が設けられており、
　該突出部は、
　第１部材に設けられた面取り部に少なくとも一部が密着し、液状シールの漏れを防止するシール部を形成する第１傾斜面と、
　第２部材に設けられた面取り部に少なくとも一部が密着し、液状シールの漏れを防止するシール部を形成する第２傾斜面と、
　これら第１傾斜面と第２傾斜面との間に設けられ、液状シールを溜める凹部とを備えることを特徴とする。 That is, the sealing structure of the present invention is
A first member having a first surface and a second surface provided on one end side of the first surface;
A second member having a third surface facing the first surface, and a fourth surface provided on one end side of the third surface;
A third member having a fifth surface opposite to the second surface and the fourth surface;
A metal gasket that seals a gap between the first surface and the third surface;
An elastic gasket for sealing the gap between the second surface and the fourth surface and the fifth surface;
A liquid seal filled in a gap formed between the metal gasket and the elastic gasket in the vicinity of the joining portion of the first member, the second member, and the third member;
A sealing structure comprising:
A chamfer is provided between the first surface and the second surface of the first member and between the third surface and the fourth surface of the second member, respectively.
The metal gasket protrudes toward the third member side from a corner portion between the chamfered portion and the first surface of the first member and a corner portion between the chamfered portion and the third surface of the second member. And arranged to
The elastic gasket is provided with a protruding portion that protrudes toward the metal gasket and is in close contact with the metal gasket.
The protrusion is
A first inclined surface that forms at least a part of the chamfered portion provided in the first member and forms a seal portion that prevents leakage of the liquid seal;
A second inclined surface that forms a seal portion that at least partially adheres to the chamfered portion provided in the second member and prevents leakage of the liquid seal;
It is provided between these 1st inclined surfaces and 2nd inclined surfaces, and is provided with the recessed part which stores a liquid seal.
　また、本発明の密封装置は、
　第１面と、第１面の一端側に設けられる第２面とを有する第１部材と、
　第１面に対向する第３面と、第３面の一端側に設けられる第４面とを有する第２部材と、
　第２面及び第４面に対向する第５面を有する第３部材と、を備える装置に用いられる密封装置において、
　第１面と第３面との間の隙間を密封する金属製ガスケットと、
　第２面及び第４面と第５面との間の隙間を密封する弾性体製ガスケットと、
　第１部材と第２部材と第３部材との合わさり部付近において、前記金属製ガスケットと弾性体製ガスケットとの間にできる隙間内に充填される液状シールと、
　を備える密封装置であって、
　第１部材における第１面と第２面との間、及び第２部材における第３面と第４面との間にはそれぞれ面取り部が設けられており、
　前記金属製ガスケットは、第１部材における面取り部と第１面との間の角部、及び第２部材における面取り部と第３面との間の角部よりも第３部材側に向かって突出するように配置されると共に、
　前記弾性体製ガスケットには、前記金属製ガスケット側に向かって突出し、該金属製ガスケットに密着する突出部が設けられており、
　該突出部は、
　第１部材に設けられた面取り部に少なくとも一部が密着し、液状シールの漏れを防止するシール部を形成する第１傾斜面と、
　第２部材に設けられた面取り部に少なくとも一部が密着し、液状シールの漏れを防止するシール部を形成する第２傾斜面と、
　これら第１傾斜面と第２傾斜面との間に設けられ、液状シールを溜める凹部とを備えることを特徴とする。 Moreover, the sealing device of the present invention comprises:
A first member having a first surface and a second surface provided on one end side of the first surface;
A second member having a third surface facing the first surface, and a fourth surface provided on one end side of the third surface;
In a sealing device used for an apparatus comprising: a third member having a fifth surface opposite to the second surface and the fourth surface;
A metal gasket that seals a gap between the first surface and the third surface;
An elastic gasket for sealing the gap between the second surface and the fourth surface and the fifth surface;
A liquid seal filled in a gap formed between the metal gasket and the elastic gasket in the vicinity of the joining portion of the first member, the second member, and the third member;
A sealing device comprising:
Chamfered portions are provided between the first surface and the second surface of the first member and between the third surface and the fourth surface of the second member, respectively.
The metal gasket protrudes toward the third member side from a corner portion between the chamfered portion and the first surface of the first member and a corner portion between the chamfered portion and the third surface of the second member. And arranged to
The elastic gasket is provided with a protruding portion that protrudes toward the metal gasket and is in close contact with the metal gasket.
The protrusion is
A first inclined surface that forms at least a part of the chamfered portion provided in the first member and forms a seal portion that prevents leakage of the liquid seal;
A second inclined surface that forms a seal portion that at least partially adheres to the chamfered portion provided in the second member and prevents leakage of the liquid seal;
It is provided between these 1st inclined surfaces and 2nd inclined surfaces, and is provided with the recessed part which stores a liquid seal.
　これらの発明によれば、第１部材と第２部材との間の隙間は金属製ガスケットによって密封される。また、第１部材及び第２部材と第３部材との間の隙間は弾性体製ガスケットによって密封される。そして、第１部材と第２部材と第３部材との合わさり部付近において、金属製ガスケットと弾性体製ガスケットとの間にできる隙間は、液状シールによって密封される。従って、各部材間の隙間を全て密封することができる。 According to these inventions, the gap between the first member and the second member is sealed by the metal gasket. Further, the gap between the first member and the second member and the third member is sealed by an elastic gasket. Then, in the vicinity of the joining portion of the first member, the second member, and the third member, a gap formed between the metal gasket and the elastic gasket is sealed with a liquid seal. Therefore, all the gaps between the members can be sealed.
　そして、本発明においては、液状シールを溜める凹部を備える構成を採用したことによって、平面状の部分に単に液状シールを塗布する場合に比べて、液状シールの漏れを抑制することができる。また、本発明においては、弾性体製ガスケットに設けられた突出部の傾斜面（第１傾斜面及び第２傾斜面）の少なくとも一部が、第１部材及び第２部材にそれぞれ設けられた傾斜面（第１傾斜面及び第２傾斜面）に密着して、液状シールの漏れを防止するシール部を形成する。従って、液状シールの漏れをより確実に抑制することができる。このように、本発明によれば、液状シールの漏れを抑制できるので、３部材及び各ガスケットの組立の際の作業性が向上する。例えば、漏れた液状シールのふき取り作業などを減らすことができる。 In the present invention, by adopting a configuration including a recess for storing the liquid seal, leakage of the liquid seal can be suppressed as compared with the case where the liquid seal is simply applied to the planar portion. In the present invention, at least a part of the inclined surfaces (first inclined surface and second inclined surface) of the protruding portion provided in the elastic gasket is provided in the first member and the second member, respectively. A seal portion is formed in close contact with the surfaces (first inclined surface and second inclined surface) to prevent leakage of the liquid seal. Therefore, leakage of the liquid seal can be more reliably suppressed. Thus, according to the present invention, since leakage of the liquid seal can be suppressed, workability in assembling the three members and each gasket is improved. For example, the work of wiping off the leaked liquid seal can be reduced.
　第１部材に設けられた面取り部の傾斜角度と前記突出部に備えられた第１傾斜面の傾斜角度は同程度に設定され、第１傾斜面は第１部材に設けられた面取り部に面接触するように構成されており、
　第２部材に設けられた面取り部の傾斜角度と前記突出部に備えられた第２傾斜面の傾斜角度は同程度に設定され、第２傾斜面は第２部材に設けられた面取り部に面接触するように構成されているとよい。 The inclination angle of the chamfered portion provided in the first member and the inclination angle of the first inclined surface provided in the protruding portion are set to be approximately the same, and the first inclined surface faces the chamfered portion provided in the first member. Configured to contact,
The inclination angle of the chamfered portion provided in the second member and the inclination angle of the second inclined surface provided in the protruding portion are set to be approximately the same, and the second inclined surface faces the chamfered portion provided in the second member. It is good to be comprised so that it may contact.
　また、前記突出部の第１傾斜面の傾斜角度は、第１部材に設けられた面取り部と第２面との間の角部が第１傾斜面に対して線接触するように設定されており、
　前記突出部の第２傾斜面の傾斜角度は、第２部材に設けられた面取り部と第４面との間の角部が第２傾斜面に対して線接触するように設定されていることも好適である。 In addition, the inclination angle of the first inclined surface of the projecting portion is set so that the corner portion between the chamfered portion provided on the first member and the second surface is in line contact with the first inclined surface. And
The inclination angle of the second inclined surface of the protruding portion is set so that the corner portion between the chamfered portion and the fourth surface provided in the second member is in line contact with the second inclined surface. Is also suitable.
　前記突出部における第１傾斜面と前記凹部との間の第１部分は、第１部材に設けられた面取り部と第２面との間の角部が第１傾斜面に対して線接触した状態では前記金属製ガスケット表面に向かって撓み、その先端が該金属製ガスケット表面に接触する程度の可撓性を有すると共に、
　前記突出部における第２傾斜面と前記凹部との間の第２部分は、第２部材に設けられた面取り部と第４面との間の角部が第２傾斜面に対して線接触した状態では前記金属製ガスケット表面に向かって撓み、その先端が該金属製ガスケット表面に接触する程度の可撓性を有するとよい。 As for the 1st part between the 1st inclined surface and the said recessed part in the said protrusion part, the corner | angular part between the chamfered part provided in the 1st member and the 2nd surface was line-contacted with respect to the 1st inclined surface. In the state, it is bent toward the surface of the metal gasket, and has a flexibility such that its tip contacts the surface of the metal gasket,
In the second portion between the second inclined surface and the recess in the protruding portion, the corner between the chamfered portion and the fourth surface provided in the second member is in line contact with the second inclined surface. In a state, it is good to have flexibility to such an extent that it bends toward the surface of the metal gasket, and its tip comes into contact with the surface of the metal gasket.
　このようにすれば、凹部から流れ出させた液状シールを、金属製ガスケットの表面と第１傾斜面と面取り部との間、及び金属製ガスケットの表面と第２傾斜面と面取り部との間にめり込ませることができる。これにより、３部材の合わさり部の密封性が高められる。そして、第１部分の先端、及び第２部分の先端は、金属製ガスケットの表面に対して線接触状態であることから、このような効果を狙って積極的に凹部から液状シールを流れ出させたとしても、液状シールの漏れを抑制できる。そのため、３部材の合わさり部の密封性能を高めつつも、液状シールの漏れを抑制することができる。 If it does in this way, the liquid seal which flowed out from the crevice will be between the surface of a metal gasket, the 1st inclined surface, and a chamfered part, and between the surface of a metal gasket, the 2nd inclined surface, and a chamfered part. It can be inserted. Thereby, the sealing performance of the joint part of 3 members is improved. And since the front-end | tip of a 1st part and the front-end | tip of a 2nd part are in a line contact state with respect to the surface of metal gaskets, the liquid seal was actively flowed out from the recessed part aiming at such an effect. However, leakage of the liquid seal can be suppressed. Therefore, the leakage of the liquid seal can be suppressed while enhancing the sealing performance of the joint portion of the three members.
　なお、上記各構成は、可能な限り組み合わせて採用し得る。 Note that the above configurations can be combined as much as possible.
　以上説明したように、本発明によれば、液状シールの漏れを抑制することができる。 As described above, according to the present invention, leakage of the liquid seal can be suppressed.
図１は本発明の実施例１に係る密封構造を構成する部材の展開斜視図である。1 is an exploded perspective view of members constituting a sealing structure according to Embodiment 1 of the present invention. 図２は本発明の実施例１に係る弾性体製ガスケットの一部拡大斜視図である。FIG. 2 is a partially enlarged perspective view of the elastic gasket according to the first embodiment of the present invention. 図３は本発明の実施例１に係る弾性体製ガスケットの一部拡大正面図である。FIG. 3 is a partially enlarged front view of the elastic gasket according to the first embodiment of the present invention. 図４は本発明の実施例１に係る密封構造の一部拡大模式的断面図（組立途中の様子を示す図）である。FIG. 4 is a partially enlarged schematic cross-sectional view (a view showing a state of assembling) of the sealing structure according to the first embodiment of the present invention. 図５は本発明の実施例１に係る密封構造の一部拡大模式的断面図（組立後の様子を示す図）である。FIG. 5 is a partially enlarged schematic cross-sectional view (a view showing a state after assembly) of the sealing structure according to Embodiment 1 of the present invention. 図６は本発明の実施例２に係る密封構造の一部拡大模式的断面図（組立途中の様子を示す図）である。FIG. 6 is a partially enlarged schematic cross-sectional view (a diagram showing a state during assembly) of the sealing structure according to Embodiment 2 of the present invention. 図７は本発明の実施例２に係る密封構造の一部拡大模式的断面図（組立後の様子を示す図）である。FIG. 7 is a partially enlarged schematic cross-sectional view (a view showing a state after assembly) of the sealing structure according to Embodiment 2 of the present invention.
符号の説明Explanation of symbols
　１０　金属製ガスケット
　２０　弾性体製ガスケット
　２１，２５　突出部
　２１ａ，２５ａ　第１傾斜面
　２１ｂ，２５ｂ　第２傾斜面
　２１ｃ，２５ｃ　凹部
　２１ｄ　側壁面
　２１Ｘ，２５Ｘ　第１部分
　２１Ｙ，２５Ｙ　第２部分
　３０　液状シール
　１００　シリンダブロック
　１０１　第１面
　１０２　第２面
　１０３　面取り部
　２００　シリンダヘッド
　２０１　第３面
　２０２　第４面
　２０３　面取り部
　３００　チェーンカバー
　３０１　第５面
　Ｅ１０１，Ｅ１０２，Ｅ２０１，Ｅ２０２　角部
　Ｓ１，Ｓ２，Ｓ３，Ｓ４　シール部 DESCRIPTION OF SYMBOLS 10 Metal gasket 20 Elastic body gasket 21, 25 Protrusion part 21a, 25a 1st inclined surface 21b, 25b 2nd inclined surface 21c, 25c Recessed part 21d Side wall surface 21X, 25X 1st part 21Y, 25Y 2nd part 30 Liquid seal DESCRIPTION OF SYMBOLS 100 Cylinder block 101 1st surface 102 2nd surface 103 Chamfering part 200 Cylinder head 201 3rd surface 202 4th surface 203 Chamfering part 300 Chain cover 301 5th surface E101, E102, E201, E202 Corner | angular part S1, S2, S3 S4 Seal part
　以下に図面を参照して、この発明を実施するための最良の形態を、実施例に基づいて例示的に詳しく説明する。ただし、この実施例に記載されている構成部品の寸法、材質、形状、その相対配置などは、特に特定的な記載がない限りは、この発明の範囲をそれらのみに限定する趣旨のものではない。 Hereinafter, the best mode for carrying out the present invention will be described in detail by way of example with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention only to those unless otherwise specified. .
　（実施例１）
　図１～図５を参照して、本発明の実施例１に係る密封構造及び密封装置について説明する。なお、本実施例においては、内燃機関の機関構造を構成する、シリンダブロック（第１部材），シリンダヘッド（第２部材）及びチェーンカバー（第３部材）間の隙間を密封する構造及び密封装置を例にして説明する。 Example 1
A sealing structure and a sealing device according to Example 1 of the present invention will be described with reference to FIGS. In this embodiment, the structure and sealing device for sealing the gap between the cylinder block (first member), the cylinder head (second member), and the chain cover (third member) constituting the engine structure of the internal combustion engine. Will be described as an example.
　図１は本発明の実施例１に係る密封構造を構成する部材の展開斜視図である。なお、図１においては、液状シールは省略している。図２は本発明の実施例１に係る弾性体製ガスケットの一部拡大斜視図である。図３は本発明の実施例１に係る弾性体製ガスケットの一部拡大正面図である。図４及び図５は本発明の実施例１に係る密封構造の一部拡大模式的断面図である。なお、図４は組立途中の様子を示し、図５は組立後の様子を示している。ここで、「組立」とは、３部材（シリンダブロックとシリンダヘッドとチェーンカバー）の組立を意味する。 FIG. 1 is an exploded perspective view of members constituting a sealing structure according to Embodiment 1 of the present invention. In FIG. 1, the liquid seal is omitted. FIG. 2 is a partially enlarged perspective view of the elastic gasket according to the first embodiment of the present invention. FIG. 3 is a partially enlarged front view of the elastic gasket according to the first embodiment of the present invention. 4 and 5 are partially enlarged schematic cross-sectional views of the sealing structure according to Embodiment 1 of the present invention. 4 shows a state during the assembly, and FIG. 5 shows a state after the assembly. Here, “assembly” means assembly of three members (cylinder block, cylinder head, and chain cover).
　＜密封構造全体＞
　本実施例に係る密封構造の全体構成について説明する。本実施例に係る密封構造は、３部材、すなわち、シリンダブロック１００とシリンダヘッド２００とチェーンカバー３００との間の隙間を密封するように構成されている。 <Entire sealing structure>
The overall structure of the sealing structure according to the present embodiment will be described. The sealing structure according to the present embodiment is configured to seal a gap between three members, that is, the cylinder block 100, the cylinder head 200, and the chain cover 300.
　より具体的には、シリンダブロック１００とシリンダヘッド２００との間の隙間を金属製ガスケット１０が密封し、シリンダブロック１００及びシリンダヘッド２００とチェーンカバー３００との間の隙間を弾性体製ガスケット２０が密封するように構成されている。また、これらの３部材の合わさり部付近において、金属製ガスケット１０と弾性体製ガスケット２０との間にできる隙間は、液状シール３０が密封するように構成されている。 More specifically, the metal gasket 10 seals the gap between the cylinder block 100 and the cylinder head 200, and the elastic gasket 20 seals the gap between the cylinder block 100 and the cylinder head 200 and the chain cover 300. It is configured to seal. Further, a gap formed between the metal gasket 10 and the elastic gasket 20 is configured so that the liquid seal 30 seals in the vicinity of the joining portion of these three members.
　シリンダブロック１００は、図１中、上面と手前側端面にそれぞれ開口部を有する箱状の部材である。以下、シリンダブロック１００における上面を第１面１０１と称し、手前側端面を第２面１０２と称する。なお、図から明らかなように、第１面１０１の一端側に第２面１０２が設けられる。そして、第１面１０１と第２面１０２との間には、面取り部１０３が設けられている。 The cylinder block 100 is a box-shaped member having openings on the upper surface and the front end surface in FIG. Hereinafter, the upper surface of the cylinder block 100 is referred to as a first surface 101, and the front end surface is referred to as a second surface 102. As is clear from the figure, the second surface 102 is provided on one end side of the first surface 101. A chamfered portion 103 is provided between the first surface 101 and the second surface 102.
　シリンダヘッド２００は、図１中、下面と手前側端面にそれぞれ開口部を有する箱状の部材である。以下、シリンダヘッド２００における下面を第３面２０１と称し、手前側端面を第４面２０２と称する。なお、図から明らかなように、第３面２０１の一端側に第４面２０２が設けられる。そして、第３面２０１と第４面２０２との間には、面取り部２０３が設けられている。 The cylinder head 200 is a box-shaped member having openings on the lower surface and the front end surface in FIG. Hereinafter, the lower surface of the cylinder head 200 is referred to as a third surface 201, and the front end surface is referred to as a fourth surface 202. As is clear from the figure, a fourth surface 202 is provided on one end side of the third surface 201. A chamfered portion 203 is provided between the third surface 201 and the fourth surface 202.
　ここで、シリンダヘッド２００における第３面２０１は、シリンダブロック１００における第１面１０１に対向するように構成されている。また、シリンダブロック１００における第２面１０２とシリンダヘッド２００における第４面２０２は、設計上、同一平面上にあるように構成されている。 Here, the third surface 201 of the cylinder head 200 is configured to face the first surface 101 of the cylinder block 100. Further, the second surface 102 of the cylinder block 100 and the fourth surface 202 of the cylinder head 200 are configured so as to be on the same plane by design.
　チェーンカバー３００は、図１中、奥側端面に開口部（不図示）を有する箱状の部材である。以下、チェーンカバー３００における奥側端面を第５面３０１と称する。この第５面３０１は、シリンダブロック１００における第２面１０２及びシリンダヘッド２００における第４面２０２に対向するように構成されている。 The chain cover 300 is a box-shaped member having an opening (not shown) on the back end face in FIG. Hereinafter, the rear side end surface of the chain cover 300 is referred to as a fifth surface 301. The fifth surface 301 is configured to face the second surface 102 of the cylinder block 100 and the fourth surface 202 of the cylinder head 200.
　金属製ガスケット１０は、シリンダブロック１００における第１面１０１とシリンダヘッド２００における第３面２０１にそれぞれ密着し、これら第１面１０１と第３面２０１との間の隙間を密封する。 The metal gasket 10 is in close contact with the first surface 101 of the cylinder block 100 and the third surface 201 of the cylinder head 200, and seals the gap between the first surface 101 and the third surface 201.
　弾性体製ガスケット２０は、シリンダブロック１００における第２面１０２及びシリンダヘッド２００における第４面２０２とチェーンカバー３００における第５面３０１にそれぞれ密着し、これら第２面１０２及び第４面２０２と第５面３０１との間の隙間を密封する。 The elastic gasket 20 is in close contact with the second surface 102 of the cylinder block 100, the fourth surface 202 of the cylinder head 200, and the fifth surface 301 of the chain cover 300, and the second surface 102, the fourth surface 202, and the The gap between the five surfaces 301 is sealed.
　＜密封装置＞
　密封装置（金属製ガスケット，弾性体製ガスケット及び液状シール）について、更に詳細に説明する。 <Sealing device>
The sealing device (metal gasket, elastic gasket and liquid seal) will be described in more detail.
　金属製ガスケット１０は、シリンダブロック１００における面取り部１０３と第１面１０１との間の角部Ｅ１０１、及びシリンダヘッド２００における面取り部２０３と第３面２０１との間の角部Ｅ２０１よりもチェーンカバー３００側に向かって突出するように配置されている（図４及び図５参照）。 The metal gasket 10 has a chain cover more than the corner E101 between the chamfered portion 103 and the first surface 101 in the cylinder block 100 and the corner E201 between the chamfered portion 203 and the third surface 201 in the cylinder head 200. It arrange | positions so that it may protrude toward the 300 side (refer FIG.4 and FIG.5).
　また、弾性体製ガスケット２０には、金属製ガスケット１０に向かって突出し、金属製ガスケット１０の端面に密着する突出部２１が設けられている。この突出部２１は、シリンダブロック１００における面取り部１０３に対向する位置、及び、シリンダヘッド２００における面取り部２０３に対向する位置に、それぞれ傾斜面が設けられている。以下、これらの傾斜面を、それぞれ第１傾斜面２１ａ，第２傾斜面２１ｂと称する。 Further, the elastic gasket 20 is provided with a protruding portion 21 that protrudes toward the metal gasket 10 and is in close contact with the end face of the metal gasket 10. The protruding portions 21 are provided with inclined surfaces at positions facing the chamfered portion 103 in the cylinder block 100 and positions facing the chamfered portion 203 in the cylinder head 200, respectively. Hereinafter, these inclined surfaces are referred to as a first inclined surface 21a and a second inclined surface 21b, respectively.
　ここで、本実施例においては、シリンダブロック１００に設けられた面取り部１０３の傾斜角度と突出部２１に備えられた第１傾斜面２１ａの傾斜角度は同程度に設定されている。また、シリンダヘッド２００に設けられた面取り部２０３の傾斜角度と突出部２１に備えられた第２傾斜面２１ｂの傾斜角度は同程度に設定されている。 Here, in the present embodiment, the inclination angle of the chamfered portion 103 provided in the cylinder block 100 and the inclination angle of the first inclined surface 21a provided in the protruding portion 21 are set to be approximately the same. Further, the inclination angle of the chamfered portion 203 provided in the cylinder head 200 and the inclination angle of the second inclined surface 21 b provided in the protruding portion 21 are set to be approximately the same.
　また、突出部２１の中央には、金属製ガスケット１０側に開口を有する凹部２１ｃが設けられている。従って、この凹部２１ｃは、第１傾斜面２１ａと第２傾斜面２１ｂとの間に設けられている。 Further, a concave portion 21c having an opening on the metal gasket 10 side is provided at the center of the protruding portion 21. Accordingly, the recess 21c is provided between the first inclined surface 21a and the second inclined surface 21b.
　組立時においては、まず、図４に示すように、シリンダブロック１００とシリンダヘッド２００を固定する。このとき、シリンダブロック１００における第１面１０１とシリンダヘッド２００における第３面２０１との間に、金属製ガスケット１０を配置させる。これにより、第１面１０１と第３面２０１との間の隙間が金属製ガスケット１０によって密封される（図４参照）。 At the time of assembly, first, the cylinder block 100 and the cylinder head 200 are fixed as shown in FIG. At this time, the metal gasket 10 is disposed between the first surface 101 of the cylinder block 100 and the third surface 201 of the cylinder head 200. Thereby, the clearance gap between the 1st surface 101 and the 3rd surface 201 is sealed by the metal gasket 10 (refer FIG. 4).
　そして、弾性体製ガスケット２０における突出部２１に設けられた凹部２１ｃに液状シール３０を注入する。なお、液状シール３０の注入量は、３部材が組み立てられた際に、弾性体製ガスケット２０における凹部２１ｃの内壁面と金属製ガスケット１０の先端付近との間に形成される隙間を充填する量よりもやや多めに設定される。 Then, the liquid seal 30 is injected into the concave portion 21 c provided in the protruding portion 21 of the elastic gasket 20. In addition, the injection amount of the liquid seal 30 is an amount that fills a gap formed between the inner wall surface of the recess 21c in the elastic gasket 20 and the vicinity of the tip of the metal gasket 10 when the three members are assembled. It is set a little more than.
　そして、この液状シール３０が半乾燥状態の間に、弾性体製ガスケット２０をチェーンカバー３００の第５面３０１に密着させた状態で、チェーンカバー３００をシリンダブロック１００及びシリンダヘッド２００に固定する。 Then, while the liquid seal 30 is in a semi-dry state, the chain cover 300 is fixed to the cylinder block 100 and the cylinder head 200 while the elastic gasket 20 is in close contact with the fifth surface 301 of the chain cover 300.
　チェーンカバー３００をシリンダブロック１００及びシリンダヘッド２００に固定させる過程において、金属製ガスケット１０の端面は、突出部２１における凹部２１ｃの両側の一対の側壁面２１ｄの端面に密着する。なお、図３中、領域Ｔは、金属製ガスケット１０の端面が密着する領域を示している。 In the process of fixing the chain cover 300 to the cylinder block 100 and the cylinder head 200, the end surface of the metal gasket 10 is in close contact with the end surfaces of the pair of side wall surfaces 21d on both sides of the recess 21c in the protruding portion 21. In FIG. 3, a region T indicates a region where the end face of the metal gasket 10 is in close contact.
　そして、組立時においては、金属製ガスケット１０の端面によって、突出部２１における一対の側壁面２１ｄがチェーンカバー３００側に向かって圧縮される。従って、金属製ガスケット１０の端面の一部は、図５に示すように、凹部２１ｃ内に進入した状態となる。 At the time of assembly, the pair of side wall surfaces 21d in the protruding portion 21 are compressed toward the chain cover 300 side by the end surface of the metal gasket 10. Accordingly, a part of the end face of the metal gasket 10 enters the recess 21c as shown in FIG.
　また、突出部２１の第１傾斜面２１ａはシリンダブロック１００における面取り部１０３に密着し、液状シール３０の漏れを防止するシール部Ｓ１を形成する。本実施例においては、面取り部１０３の傾斜角度と第１傾斜面２１ａの傾斜角度は同程度に設定されていることから、これらは面接触の状態で接触する。この面接触した部分がシール部Ｓ１に相当する。 Further, the first inclined surface 21 a of the protruding portion 21 is in close contact with the chamfered portion 103 in the cylinder block 100 to form a seal portion S 1 that prevents the liquid seal 30 from leaking. In the present embodiment, since the inclination angle of the chamfered portion 103 and the inclination angle of the first inclined surface 21a are set to be approximately the same, they contact each other in a surface contact state. The surface contact portion corresponds to the seal portion S1.
　同様に、突出部２１の第２傾斜面２１ｂはシリンダヘッド２００における面取り部２０３に密着し、液状シール３０の漏れを防止するシール部Ｓ２を形成する。そして、面取り部２０３の傾斜角度と第２傾斜面２１ｂの傾斜角度は同程度に設定されていることから、これらは面接触の状態で接触する。この面接触した部分がシール部Ｓ２に相当する。 Similarly, the second inclined surface 21b of the protruding portion 21 is in close contact with the chamfered portion 203 of the cylinder head 200 to form a seal portion S2 that prevents the liquid seal 30 from leaking. And since the inclination angle of the chamfered portion 203 and the inclination angle of the second inclined surface 21b are set to be approximately the same, they contact each other in a surface contact state. This surface contact portion corresponds to the seal portion S2.
　＜本実施例の優れた点＞
　本実施例に係る密封構造によれば、シリンダブロック１００とシリンダヘッド２００との間の隙間は金属製ガスケット１０によって密封される。また、シリンダブロック１００及びシリンダヘッド２００とチェーンカバー３００との間の隙間は弾性体製ガスケット２０によって密封される。そして、シリンダブロック１００とシリンダヘッド２００とチェーンカバー３００との合わさり部付近において、金属製ガスケット１０と弾性体製ガスケット２０との間にできる隙間は、液状シール３０によって密封される。従って、各部材間の隙間を全て密封することができる。 <Excellent points of this embodiment>
According to the sealing structure according to the present embodiment, the gap between the cylinder block 100 and the cylinder head 200 is sealed by the metal gasket 10. Further, the gaps between the cylinder block 100 and the cylinder head 200 and the chain cover 300 are sealed by the elastic gasket 20. A gap formed between the metal gasket 10 and the elastic gasket 20 is sealed by the liquid seal 30 in the vicinity of the joining portion of the cylinder block 100, the cylinder head 200, and the chain cover 300. Therefore, all the gaps between the members can be sealed.
　そして、本実施例においては、弾性体製ガスケット２０に、液状シール３０を溜める凹部２１ｃを備える構成を採用したことによって、平面状の部分に単に液状シールを塗布する場合に比べて、液状シールの漏れを抑制することができる。 In this embodiment, since the elastic gasket 20 is provided with the concave portion 21c for storing the liquid seal 30, the liquid seal can be compared with a case where the liquid seal is simply applied to the planar portion. Leakage can be suppressed.
　すなわち、本実施例の場合には、凹部２１ｃに液状シール３０を注入し、凹部２１ｃ内に液状シール３０を溜めた状態で、液状シール３０が半乾燥状態の間に、チェーンカバー３００をシリンダブロック１００及びシリンダヘッド２００に固定する。この過程で、弾性体製ガスケット２０における凹部２１ｃの内壁面と金属製ガスケット１０の先端付近との間に形成される隙間が、液状シール３０によって充填された状態となる。 That is, in the case of the present embodiment, the liquid seal 30 is injected into the concave portion 21c, and the liquid seal 30 is stored in the concave portion 21c, and the liquid seal 30 is in a semi-dry state while the chain cover 300 is removed from the cylinder block. 100 and cylinder head 200 are fixed. In this process, a gap formed between the inner wall surface of the recess 21 c in the elastic gasket 20 and the vicinity of the tip of the metal gasket 10 is filled with the liquid seal 30.
　ここで、この隙間を液状シール３０によって完全に充填させるために、本実施例では、上記の通り、液状シール３０の注入量を、当該隙間を充填する量よりもやや多めに設定している。従って、液状シール３０の一部が凹部２１ｃの外に漏れることがある。 Here, in order to completely fill the gap with the liquid seal 30, in this embodiment, as described above, the injection amount of the liquid seal 30 is set slightly larger than the amount of filling the gap. Accordingly, a part of the liquid seal 30 may leak out of the recess 21c.
　しかしながら、本実施例においては、弾性体製ガスケット２０に設けられた突出部２１の第１傾斜面２１ａがシリンダブロック１００における面取り部１０３に密着し、シール部Ｓ１を形成している。従って、シリンダブロック１００と弾性体製ガスケット２０とのシール面（第２面１０２と弾性体製ガスケット２０との密着面）に液状シール３０が漏れてしまうことを抑制できる。 However, in the present embodiment, the first inclined surface 21a of the protruding portion 21 provided on the elastic gasket 20 is in close contact with the chamfered portion 103 of the cylinder block 100 to form the seal portion S1. Therefore, the liquid seal 30 can be prevented from leaking to the seal surface between the cylinder block 100 and the elastic gasket 20 (the contact surface between the second surface 102 and the elastic gasket 20).
　また、弾性体製ガスケット２０に設けられた突出部２１の第２傾斜面２１ｂがシリンダヘッド２００における面取り部２０３に密着し、シール部Ｓ２を形成している。従って、シリンダヘッド２００と弾性体製ガスケット２０とのシール面（第４面２０２と弾性体製ガスケット２０との密着面）に液状シール３０が漏れてしまうことを抑制できる。 Further, the second inclined surface 21b of the protruding portion 21 provided on the elastic gasket 20 is in close contact with the chamfered portion 203 of the cylinder head 200 to form a seal portion S2. Therefore, the liquid seal 30 can be prevented from leaking to the seal surface between the cylinder head 200 and the elastic gasket 20 (the close contact surface between the fourth surface 202 and the elastic gasket 20).
　また、突出部２１における凹部２１ｃの両側の両側壁面２１ｄによって、液状シール３０が、凹部２１ｃの両側に漏れ出してしまうことも抑制できる。 Moreover, it is possible to prevent the liquid seal 30 from leaking to both sides of the recess 21c by the side wall surfaces 21d on both sides of the recess 21c in the protrusion 21.
　なお、本実施例においては、組立時においては、突出部２１における第１傾斜面２１ａが、シリンダブロック１００における面取り部１０３に押圧される。これにより、突出部２１における第１傾斜面２１ａと凹部２１ｃとの間の部分（以下、第１部分２１Ｘと称する）は、その先端が金属製ガスケット１０の表面に向かって撓むように変形する。従って、この第１部分２１Ｘの先端と金属製ガスケット１０の表面との間は、隙間がないか、隙間があっても僅かな隙間となる。 In the present embodiment, at the time of assembly, the first inclined surface 21 a in the protruding portion 21 is pressed against the chamfered portion 103 in the cylinder block 100. Thereby, the part (henceforth the 1st part 21X) between the 1st inclined surface 21a and the recessed part 21c in the protrusion part 21 deform | transforms so that the front-end | tip may bend toward the surface of the metal gasket 10. FIG. Therefore, there is no gap between the tip of the first portion 21X and the surface of the metal gasket 10, or a slight gap is present even if there is a gap.
　同様に、組立時においては、突出部２１における第２傾斜面２１ｂが、シリンダヘッド２００における面取り部２０３に押圧される。これにより、突出部２１における第２傾斜面２１ｂと凹部２１ｃとの間の部分（以下、第２部分２１Ｙと称する）は、その先端が金属製ガスケット１０の表面に向かって撓むように変形する。従って、この第２部分２１Ｙの先端と金属製ガスケット１０の表面との間も、隙間がないか、隙間があっても僅かな隙間となる。 Similarly, at the time of assembly, the second inclined surface 21b of the protruding portion 21 is pressed against the chamfered portion 203 of the cylinder head 200. Thereby, the part (henceforth the 2nd part 21Y) between the 2nd inclined surface 21b and the recessed part 21c in the protrusion part 21 deform | transforms so that the front-end | tip may bend toward the surface of the metal gasket 10. FIG. Accordingly, there is no gap between the tip of the second portion 21Y and the surface of the metal gasket 10, or a slight gap is present even if there is a gap.
　以上のことから、液状シール３０が凹部２１ｃの外に流れ出ること自体もある程度抑制できる。 From the above, the liquid seal 30 can be suppressed to some extent from flowing out of the recess 21c.
　以上のように、本実施例に係る密封構造及び密封装置によれば、液状シール３０の漏れを抑制できる。従って、３部材及び各ガスケットの組立の際の作業性が向上する（例えば、漏れた液状シール３０のふき取り作業などを減らすことができる）。なお、本実施例における液状シールの塗布工程については、弾性体製ガスケット２０における突出部２１に設けられた凹部２１ｃに液状シール３０を注入する場合を説明した。しかしながら、この塗布工程においては、シリンダブロック１００及びシリンダヘッド２００側に液状シール３０を塗布することも可能である。この場合、まず、第１面１０１と第３面２０１との間に金属製ガスケット１０が配置されるように、シリンダブロック１００とシリンダヘッド２００とを固定した後に、金属製ガスケット１０の先端付近に液状シール３０を塗布する。そして、この液状シール３０が半乾燥状態の間に、弾性体製ガスケット２０をチェーンカバー３００の第５面３０１に密着させた状態で、チェーンカバー３００をシリンダブロック１００及びシリンダヘッド２００に固定する。このような場合でも、弾性体製ガスケット２０における凹部２１ｃの内壁面と金属製ガスケット１０の先端付近との間に形成される隙間が、液状シール３０によって充填された状態となる。従って、本実施例の場合と同様の効果を得ることができる。 As described above, according to the sealing structure and the sealing device according to the present embodiment, leakage of the liquid seal 30 can be suppressed. Therefore, the workability in assembling the three members and the gaskets is improved (for example, the wiping work of the leaked liquid seal 30 can be reduced). In addition, about the application | coating process of the liquid seal | sticker in a present Example, the case where the liquid seal | sticker 30 was inject | poured into the recessed part 21c provided in the protrusion part 21 in the elastic-body gasket 20 was demonstrated. However, in this application process, it is also possible to apply the liquid seal 30 to the cylinder block 100 and the cylinder head 200 side. In this case, first, after the cylinder block 100 and the cylinder head 200 are fixed so that the metal gasket 10 is disposed between the first surface 101 and the third surface 201, the metal gasket 10 is disposed near the tip of the metal gasket 10. A liquid seal 30 is applied. While the liquid seal 30 is in a semi-dry state, the chain cover 300 is fixed to the cylinder block 100 and the cylinder head 200 while the elastic gasket 20 is in close contact with the fifth surface 301 of the chain cover 300. Even in such a case, the gap formed between the inner wall surface of the recess 21 c in the elastic gasket 20 and the vicinity of the tip of the metal gasket 10 is filled with the liquid seal 30. Therefore, the same effect as in the case of the present embodiment can be obtained.
　（実施例２）
　図６及び図７には、本発明の実施例２が示されている。上記実施例１においては、シリンダブロックに設けられた面取り部及びシリンダヘッドに設けられた面取り部に対して突出部に備えられた傾斜面が面接触する場合を示したが、本実施例では、当該面取り部（より具体的には面取り部の端部である角部）が当該傾斜面に対して線接触する場合を示す。 (Example 2)
6 and 7 show the second embodiment of the present invention. In the first embodiment, the case where the inclined surface provided in the projecting portion is in surface contact with the chamfered portion provided in the cylinder block and the chamfered portion provided in the cylinder head is shown. The case where the said chamfer part (more specifically, the corner | angular part which is an edge part of a chamfer part) carries out a line contact with respect to the said inclined surface is shown.
　その他の構成および作用については実施例１と同一なので、同一の構成部分については同一の符号を付して、その説明は省略する。 Since other configurations and operations are the same as those in the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted.
　図６及び図７は本発明の実施例２に係る密封構造の一部拡大模式的断面図である。なお、図６は組立途中の様子を示し、図７は組立後の様子を示している。ここで、「組立」とは、３部材（シリンダブロックとシリンダヘッドとチェーンカバー）の組立を意味する。 6 and 7 are partially enlarged schematic cross-sectional views of the sealing structure according to Example 2 of the present invention. FIG. 6 shows a state during assembly, and FIG. 7 shows a state after assembly. Here, “assembly” means assembly of three members (cylinder block, cylinder head, and chain cover).
　本実施例においては、弾性体製ガスケット２０の構成が、上記実施例１の場合と異なっている。その他の構成は上記実施例１と同一である。 In this embodiment, the configuration of the elastic gasket 20 is different from that in the first embodiment. Other configurations are the same as those of the first embodiment.
　本実施例における弾性体製ガスケット２０も、実施例１と同様に、金属製ガスケット１０に向かって突出し、金属製ガスケット１０の端面に密着する突出部２５が設けられている。この突出部２５は、シリンダブロック１００における面取り部１０３に対向する位置、及び、シリンダヘッド２００における面取り部２０３に対向する位置に、それぞれ傾斜面が設けられている。以下、これらの傾斜面を、それぞれ第１傾斜面２５ａ，第２傾斜面２５ｂと称する。 The elastic gasket 20 in the present embodiment is also provided with a protruding portion 25 that protrudes toward the metal gasket 10 and is in close contact with the end face of the metal gasket 10 as in the first embodiment. The protrusions 25 are provided with inclined surfaces at positions facing the chamfered portion 103 in the cylinder block 100 and positions facing the chamfered portion 203 in the cylinder head 200, respectively. Hereinafter, these inclined surfaces are referred to as a first inclined surface 25a and a second inclined surface 25b, respectively.
　そして、本実施例においては、突出部２５の第１傾斜面２５ａが、当該第１傾斜面２５ａに対して、シリンダブロック１００に設けられた面取り部１０３と第２面１０２との間の角部Ｅ１０２が線接触するように構成されている。これを実現するために、第１傾斜面２５ａの傾斜角度（シリンダブロック１００と弾性体製ガスケット２０とのシール面（第２面１０２と弾性体製ガスケット２０との密着面）に対する傾斜角度）は、面取り部１０３のそれよりも小さくなるように設定されている。また、第１傾斜面２５ａの下端が、角部Ｅ１０２よりも、図６，７中下側となるように設定されている。 In the present embodiment, the first inclined surface 25a of the protruding portion 25 is a corner between the chamfered portion 103 and the second surface 102 provided in the cylinder block 100 with respect to the first inclined surface 25a. E102 is configured to be in line contact. In order to realize this, the inclination angle of the first inclined surface 25a (inclination angle with respect to the seal surface between the cylinder block 100 and the elastic gasket 20 (the contact surface between the second surface 102 and the elastic gasket 20)) is The chamfered portion 103 is set to be smaller than that. In addition, the lower end of the first inclined surface 25a is set to be lower in FIGS. 6 and 7 than the corner E102.
　そして、組立時においては、上記の通り、シリンダブロック１００における角部Ｅ１０２が、突出部２５における第１傾斜面２５ａに対して線接触する。これにより、第１傾斜面２５ａは角部Ｅ１０２によって押圧される。これにより、突出部２５における第１傾斜面２５ａと凹部２１ｃとの間の部分（以下、第１部分２５Ｘと称する）は、その先端が金属製ガスケット１０の表面に向かって撓むように変形する。そして、本実施例においては、この撓み変形によって、この第１部分２５Ｘの先端が金属製ガスケット１０の表面に対して密着するように、各部の寸法が設定されている。 And at the time of assembly, as described above, the corner E102 of the cylinder block 100 is in line contact with the first inclined surface 25a of the protrusion 25. Thereby, the 1st inclined surface 25a is pressed by the corner | angular part E102. Thereby, the part (henceforth the 1st part 25X) between the 1st inclined surface 25a and the recessed part 21c in the protrusion part 25 deform | transforms so that the front-end | tip may bend toward the surface of the metal gasket 10. FIG. In this embodiment, the dimensions of the respective parts are set so that the tip of the first portion 25X is in close contact with the surface of the metal gasket 10 due to the bending deformation.
　同様に、突出部２５の第２傾斜面２５ｂが、当該第２傾斜面２５ｂに対して、シリンダヘッド２００に設けられた面取り部２０３と第４面２０２との間の角部Ｅ２０２が線接触するように構成されている。これを実現するために、第２傾斜面２５ｂの傾斜角度（シリンダヘッド２００と弾性体製ガスケット２０とのシール面（第４面２０２と弾性体製ガスケット２０との密着面）に対する傾斜角度）は、面取り部２０３のそれよりも小さくなるように設定されている。また、第２傾斜面２５ｂの上端が、角部Ｅ２０２よりも、図６，７中上側となるように設定されている。 Similarly, the second inclined surface 25b of the projecting portion 25 is in line contact with the second inclined surface 25b at a corner E202 between the chamfered portion 203 provided on the cylinder head 200 and the fourth surface 202. It is configured as follows. In order to realize this, the inclination angle of the second inclined surface 25b (inclination angle with respect to the seal surface between the cylinder head 200 and the elastic gasket 20 (the contact surface between the fourth surface 202 and the elastic gasket 20)) is set. The chamfered portion 203 is set to be smaller than that. Further, the upper end of the second inclined surface 25b is set so as to be on the upper side in FIGS.
　そして、組立時においては、上記の通り、シリンダヘッド２００における角部Ｅ２０２が、突出部２５における第２傾斜面２５ｂに対して線接触する。これにより、第２傾斜面２５ｂは角部Ｅ２０２によって押圧される。これにより、突出部２５における第２傾斜面２５ｂと凹部２１ｃとの間の部分（以下、第２部分２５Ｙと称する）は、その先端が金属製ガスケット１０の表面に向かって撓むように変形する。そして、本実施例においては、この撓み変形によって、この第２部分２５Ｙの先端が金属製ガスケット１０の表面に対して密着するように、各部の寸法が設定されている。 And at the time of assembly, as described above, the corner E202 of the cylinder head 200 is in line contact with the second inclined surface 25b of the protrusion 25. Thereby, the 2nd inclined surface 25b is pressed by the corner | angular part E202. Thereby, the part (henceforth the 2nd part 25Y) between the 2nd inclined surface 25b and the recessed part 21c in the protrusion part 25 deform | transforms so that the front-end | tip may bend toward the surface of the metal gasket 10. FIG. In this embodiment, the dimensions of the respective parts are set so that the tip of the second portion 25Y is in close contact with the surface of the metal gasket 10 due to the bending deformation.
　また、突出部２５の中央には、上記実施例１の場合と同様に、金属製ガスケット１０側に開口を有する凹部２５ｃが設けられている。従って、この凹部２５ｃは、第１傾斜面２５ａと第２傾斜面２５ｂとの間に設けられている。 In the center of the protrusion 25, a recess 25c having an opening on the metal gasket 10 side is provided as in the case of the first embodiment. Accordingly, the recess 25c is provided between the first inclined surface 25a and the second inclined surface 25b.
　組立手順及び組立時における弾性体製ガスケット２０の状態以外の点については、上記実施例１と同一であるので、その説明は省略する。 Since the points other than the assembly procedure and the state of the elastic gasket 20 at the time of assembly are the same as those in the first embodiment, description thereof will be omitted.
　本実施例においては、突出部２５の第１傾斜面２５ａに対して、シリンダブロック１００における角部Ｅ１０２（つまり、面取り部１０３の端部）が密着し、液状シール３０の漏れを防止するシール部Ｓ３を形成する。本実施例においては、上記の通り、角部Ｅ１０２が第１傾斜面２５ａに対して線接触の状態で接触する。この線接触した部分がシール部Ｓ３に相当する。 In the present embodiment, the corner portion E102 (that is, the end portion of the chamfered portion 103) of the cylinder block 100 is in close contact with the first inclined surface 25a of the protruding portion 25, and the seal portion that prevents the liquid seal 30 from leaking. S3 is formed. In the present embodiment, as described above, the corner E102 contacts the first inclined surface 25a in a line contact state. This line contact portion corresponds to the seal portion S3.
　同様に、突出部２５の第２傾斜面２５ｂに対して、シリンダヘッド２００における角部Ｅ２０２（つまり、面取り部２０３の端部）が密着し、液状シール３０の漏れを防止するシール部Ｓ４を形成する。そして、上記の通り、角部Ｅ２０２が第２傾斜面２５ｂに対して線接触の状態で接触する。この線接触した部分がシール部Ｓ４に相当する。 Similarly, the corner portion E202 of the cylinder head 200 (that is, the end portion of the chamfered portion 203) is in close contact with the second inclined surface 25b of the protruding portion 25, thereby forming a seal portion S4 that prevents the liquid seal 30 from leaking. To do. As described above, the corner E202 is in line contact with the second inclined surface 25b. This line contact portion corresponds to the seal portion S4.
　以上のような構成を採用したことで、本実施例においても、上記実施例１の場合と同様の効果を得ることができる。また、本実施例の場合には、線接触状態であるシール部Ｓ３，Ｓ４によって液状シール３０の漏れを抑制する構成を採用している。一般的には、シール部は面接触の場合よりも線接触の場合の方が、面圧ピークを高くし易く、密封性能を高くすることができる。従って、実施例１に比べて実施例２の方が密封性能を高くすることができる。 By adopting the configuration as described above, the same effects as in the case of the first embodiment can be obtained in this embodiment. In the case of the present embodiment, a configuration is adopted in which leakage of the liquid seal 30 is suppressed by the seal portions S3 and S4 that are in a line contact state. In general, in the case of line contact, the seal portion is more likely to have a higher surface pressure peak than in the case of surface contact, and the sealing performance can be improved. Therefore, the sealing performance of Example 2 can be made higher than that of Example 1.
　また、本実施例の場合には、組立時において、第１部分２５Ｘの先端と第２部分２５Ｙの先端が金属製ガスケット１０の表面に対して密着する。そのため、凹部２５ｃから流れ出させた液状シール３０を、金属製ガスケット１０の表面と第１傾斜面２５ａと面取り部１０３との間、及び金属製ガスケット１０の表面と第２傾斜面２５ｂと面取り部２０３との間にめり込ませることができる。これにより、３部材の合わさり部の密封性が高められる。そして、第１部分２５Ｘの先端、及び第２部分２５Ｙの先端は、金属製ガスケット１０の表面に対して線接触状態であることから、このような効果を狙って積極的に凹部２５ｃから液状シール３０を流れ出させたとしても、液状シール３０の漏れを抑制できる。そのため、３部材の合わさり部の密封性能を高めつつも、液状シール３０の漏れを抑制することができる。このように、液状シールの漏れ（第２面１０２と弾性体製ガスケット２０との密着面や第４面２０２と弾性体製ガスケット２０との密着面への漏れ）をより確実に抑制できる。 In the case of the present embodiment, the tip of the first portion 25X and the tip of the second portion 25Y are in close contact with the surface of the metal gasket 10 during assembly. Therefore, the liquid seal 30 that has flowed out from the recess 25c is placed between the surface of the metal gasket 10, the first inclined surface 25a, and the chamfered portion 103, and between the surface of the metal gasket 10, the second inclined surface 25b, and the chamfered portion 203. It can be inserted between. Thereby, the sealing performance of the joint part of 3 members is improved. And since the front-end | tip of the 1st part 25X and the front-end | tip of the 2nd part 25Y are a line contact state with respect to the surface of the metal gasket 10, it aims at such an effect and is liquid-sealed actively from the recessed part 25c. Even if 30 is caused to flow out, leakage of the liquid seal 30 can be suppressed. Therefore, the leakage of the liquid seal 30 can be suppressed while enhancing the sealing performance of the joint portion of the three members. Thus, leakage of the liquid seal (leakage to the contact surface between the second surface 102 and the elastic gasket 20 and the contact surface between the fourth surface 202 and the elastic gasket 20) can be more reliably suppressed.

Claims (8)

  1. 　第１面と、第１面の一端側に設けられる第２面とを有する第１部材と、
    　第１面に対向する第３面と、第３面の一端側に設けられる第４面とを有する第２部材と、
    　第２面及び第４面に対向する第５面を有する第３部材と、
    　第１面と第３面との間の隙間を密封する金属製ガスケットと、
    　第２面及び第４面と第５面との間の隙間を密封する弾性体製ガスケットと、
    　第１部材と第２部材と第３部材との合わさり部付近において、前記金属製ガスケットと弾性体製ガスケットとの間にできる隙間内に充填される液状シールと、
    　を備える密封構造であって、
    　第１部材における第１面と第２面との間、及び第２部材における第３面と第４面との間にはそれぞれ面取り部が設けられ、
    　前記金属製ガスケットは、第１部材における面取り部と第１面との間の角部、及び第２部材における面取り部と第３面との間の角部よりも第３部材側に向かって突出するように配置されると共に、
    　前記弾性体製ガスケットには、前記金属製ガスケット側に向かって突出し、該金属製ガスケットに密着する突出部が設けられており、
    　該突出部は、
    　第１部材に設けられた面取り部に少なくとも一部が密着し、液状シールの漏れを防止するシール部を形成する第１傾斜面と、
    　第２部材に設けられた面取り部に少なくとも一部が密着し、液状シールの漏れを防止するシール部を形成する第２傾斜面と、
    　これら第１傾斜面と第２傾斜面との間に設けられ、液状シールを溜める凹部とを備えることを特徴とする密封構造。     A first member having a first surface and a second surface provided on one end side of the first surface;
    A second member having a third surface facing the first surface, and a fourth surface provided on one end side of the third surface;
    A third member having a fifth surface opposite to the second surface and the fourth surface;
    A metal gasket that seals a gap between the first surface and the third surface;
    An elastic gasket for sealing the gap between the second surface and the fourth surface and the fifth surface;
    A liquid seal filled in a gap formed between the metal gasket and the elastic gasket in the vicinity of the joining portion of the first member, the second member, and the third member;
    A sealing structure comprising:
    A chamfer is provided between the first surface and the second surface of the first member and between the third surface and the fourth surface of the second member, respectively.
    The metal gasket protrudes toward the third member side from a corner portion between the chamfered portion and the first surface of the first member and a corner portion between the chamfered portion and the third surface of the second member. And arranged to
    The elastic gasket is provided with a protruding portion that protrudes toward the metal gasket and is in close contact with the metal gasket.
    The protrusion is
    A first inclined surface that forms at least a part of the chamfered portion provided in the first member and forms a seal portion that prevents leakage of the liquid seal;
    A second inclined surface that forms a seal portion that at least partially adheres to the chamfered portion provided in the second member and prevents leakage of the liquid seal;
    A sealing structure comprising a concave portion provided between the first inclined surface and the second inclined surface and storing a liquid seal.
  2. 　第１部材に設けられた面取り部の傾斜角度と前記突出部に備えられた第１傾斜面の傾斜角度は同程度に設定され、第１傾斜面は第１部材に設けられた面取り部に面接触するように構成されており、
    　第２部材に設けられた面取り部の傾斜角度と前記突出部に備えられた第２傾斜面の傾斜角度は同程度に設定され、第２傾斜面は第２部材に設けられた面取り部に面接触するように構成されていることを特徴とする請求項１に記載の密封構造。     The inclination angle of the chamfered portion provided in the first member and the inclination angle of the first inclined surface provided in the protruding portion are set to be approximately the same, and the first inclined surface faces the chamfered portion provided in the first member. Configured to contact,
    The inclination angle of the chamfered portion provided in the second member and the inclination angle of the second inclined surface provided in the protruding portion are set to be approximately the same, and the second inclined surface faces the chamfered portion provided in the second member. The sealing structure according to claim 1, wherein the sealing structure is configured to contact with each other.
  3. 　前記突出部の第１傾斜面の傾斜角度は、第１部材に設けられた面取り部と第２面との間の角部が第１傾斜面に対して線接触するように設定されており、
    　前記突出部の第２傾斜面の傾斜角度は、第２部材に設けられた面取り部と第４面との間の角部が第２傾斜面に対して線接触するように設定されていることを特徴とする請求項１に記載の密封構造。     The inclination angle of the first inclined surface of the protrusion is set so that the corner between the chamfered portion and the second surface provided in the first member is in line contact with the first inclined surface,
    The inclination angle of the second inclined surface of the protruding portion is set so that the corner portion between the chamfered portion and the fourth surface provided in the second member is in line contact with the second inclined surface. The sealing structure according to claim 1.
  4. 　前記突出部における第１傾斜面と前記凹部との間の第１部分は、第１部材に設けられた面取り部と第２面との間の角部が第１傾斜面に対して線接触した状態では前記金属製ガスケット表面に向かって撓み、その先端が該金属製ガスケット表面に接触する程度の可撓性を有すると共に、
    　前記突出部における第２傾斜面と前記凹部との間の第２部分は、第２部材に設けられた面取り部と第４面との間の角部が第２傾斜面に対して線接触した状態では前記金属製ガスケット表面に向かって撓み、その先端が該金属製ガスケット表面に接触する程度の可撓性を有することを特徴とする請求項３に記載の密封構造。     As for the 1st part between the 1st inclined surface and the said recessed part in the said protrusion part, the corner | angular part between the chamfered part provided in the 1st member and the 2nd surface was line-contacted with respect to the 1st inclined surface. In the state, it is bent toward the surface of the metal gasket, and has a flexibility such that its tip contacts the surface of the metal gasket,
    In the second portion between the second inclined surface and the recess in the protruding portion, the corner between the chamfered portion and the fourth surface provided in the second member is in line contact with the second inclined surface. 4. The sealing structure according to claim 3, wherein the sealing structure is flexible so that the metal gasket is bent toward the surface of the metal gasket and a tip thereof is in contact with the surface of the metal gasket.
  5. 　第１面と、第１面の一端側に設けられる第２面とを有する第１部材と、
    　第１面に対向する第３面と、第３面の一端側に設けられる第４面とを有する第２部材と、
    　第２面及び第４面に対向する第５面を有する第３部材と、を備える装置に用いられる密封装置において、
    　第１面と第３面との間の隙間を密封する金属製ガスケットと、
    　第２面及び第４面と第５面との間の隙間を密封する弾性体製ガスケットと、
    　第１部材と第２部材と第３部材との合わさり部付近において、前記金属製ガスケットと弾性体製ガスケットとの間にできる隙間内に充填される液状シールと、
    　を備える密封装置であって、
    　第１部材における第１面と第２面との間、及び第２部材における第３面と第４面との間にはそれぞれ面取り部が設けられており、
    　前記金属製ガスケットは、第１部材における面取り部と第１面との間の角部、及び第２部材における面取り部と第３面との間の角部よりも第３部材側に向かって突出するように配置されると共に、
    　前記弾性体製ガスケットには、前記金属製ガスケット側に向かって突出し、該金属製ガスケットに密着する突出部が設けられており、
    　該突出部は、
    　第１部材に設けられた面取り部に少なくとも一部が密着し、液状シールの漏れを防止するシール部を形成する第１傾斜面と、
    　第２部材に設けられた面取り部に少なくとも一部が密着し、液状シールの漏れを防止するシール部を形成する第２傾斜面と、
    　これら第１傾斜面と第２傾斜面との間に設けられ、液状シールを溜める凹部とを備えることを特徴とする密封装置。     A first member having a first surface and a second surface provided on one end side of the first surface;
    A second member having a third surface facing the first surface, and a fourth surface provided on one end side of the third surface;
    In a sealing device used for an apparatus comprising: a third member having a fifth surface opposite to the second surface and the fourth surface;
    A metal gasket that seals a gap between the first surface and the third surface;
    An elastic gasket for sealing the gap between the second surface and the fourth surface and the fifth surface;
    A liquid seal filled in a gap formed between the metal gasket and the elastic gasket in the vicinity of the joining portion of the first member, the second member, and the third member;
    A sealing device comprising:
    Chamfered portions are provided between the first surface and the second surface of the first member and between the third surface and the fourth surface of the second member, respectively.
    The metal gasket protrudes toward the third member side from a corner portion between the chamfered portion and the first surface of the first member and a corner portion between the chamfered portion and the third surface of the second member. And arranged to
    The elastic gasket is provided with a protruding portion that protrudes toward the metal gasket and is in close contact with the metal gasket.
    The protrusion is
    A first inclined surface that forms at least a part of the chamfered portion provided in the first member and forms a seal portion that prevents leakage of the liquid seal;
    A second inclined surface that forms a seal portion that at least partially adheres to the chamfered portion provided in the second member and prevents leakage of the liquid seal;
    A sealing device comprising: a concave portion provided between the first inclined surface and the second inclined surface and storing a liquid seal.
  6. 　前記突出部に備えられた第１傾斜面の傾斜角度は、第１部材に設けられた面取り部の傾斜角度と同程度に設定され、第１傾斜面は第１部材に設けられた面取り部に面接触するように構成されており、
    　前記突出部に備えられた第２傾斜面の傾斜角度は、第２部材に設けられた面取り部の傾斜角度と同程度に設定され、第２傾斜面は第２部材に設けられた面取り部に面接触するように構成されていることを特徴とする請求項５に記載の密封装置。     The inclination angle of the first inclined surface provided in the protruding portion is set to be approximately the same as the inclination angle of the chamfered portion provided in the first member, and the first inclined surface is formed on the chamfered portion provided in the first member. Configured to make surface contact,
    The inclination angle of the second inclined surface provided in the protruding portion is set to be approximately the same as the inclination angle of the chamfered portion provided in the second member, and the second inclined surface is formed on the chamfered portion provided in the second member. The sealing device according to claim 5, wherein the sealing device is configured to be in surface contact.
  7. 　前記突出部の第１傾斜面の傾斜角度は、第１部材に設けられた面取り部と第２面との間の角部が第１傾斜面に対して線接触するように設定されており、
    　前記突出部の第２傾斜面の傾斜角度は、第２部材に設けられた面取り部と第４面との間の角部が第２傾斜面に対して線接触するように設定されていることを特徴とする請求項５に記載の密封装置。     The inclination angle of the first inclined surface of the protrusion is set so that the corner between the chamfered portion and the second surface provided in the first member is in line contact with the first inclined surface,
    The inclination angle of the second inclined surface of the protruding portion is set so that the corner portion between the chamfered portion and the fourth surface provided in the second member is in line contact with the second inclined surface. The sealing device according to claim 5.
  8. 　前記突出部における第１傾斜面と前記凹部との間の第１部分は、第１部材に設けられた面取り部と第２面との間の角部が第１傾斜面に対して線接触した状態では前記金属製ガスケット表面に向かって撓み、その先端が該金属製ガスケット表面に接触する程度の可撓性を有すると共に、
    　前記突出部における第２傾斜面と前記凹部との間の第２部分は、第２部材に設けられた面取り部と第４面との間の角部が第２傾斜面に対して線接触した状態では前記金属製ガスケット表面に向かって撓み、その先端が該金属製ガスケット表面に接触する程度の可撓性を有することを特徴とする請求項７に記載の密封装置。     As for the 1st part between the 1st inclined surface and the said recessed part in the said protrusion part, the corner | angular part between the chamfered part provided in the 1st member and the 2nd surface was line-contacted with respect to the 1st inclined surface. In the state, it is bent toward the surface of the metal gasket, and has a flexibility such that its tip contacts the surface of the metal gasket,
    In the second portion between the second inclined surface and the recess in the protruding portion, the corner between the chamfered portion and the fourth surface provided in the second member is in line contact with the second inclined surface. The sealing device according to claim 7, wherein the sealing device is flexible so as to bend toward a surface of the metal gasket in a state and a tip of the metal gasket contacts the surface of the metal gasket.
PCT/JP2009/056520 2008-04-02 2009-03-30 Sealing structure and sealing device WO2009123130A1 (en)

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CN105736697A (en) * 2015-12-09 2016-07-06 中国船舶重工集团公司第七二六研究所 Watertight coating structure
GB2535685A (en) * 2014-11-17 2016-08-31 Ford Global Tech Llc An engine cover having a sealed joint
JP7363744B2 (en) 2020-10-30 2023-10-18 株式会社豊田自動織機 electric compressor

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JP2004068672A (en) * 2002-08-05 2004-03-04 Taiho Kogyo Co Ltd Sealing structure for engine
JP2006250199A (en) * 2005-03-09 2006-09-21 Nissan Motor Co Ltd Seal structure for three-member assembly
JP2008019793A (en) * 2006-07-13 2008-01-31 Toyota Motor Corp Seal structure of internal combustion engine

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Publication number Priority date Publication date Assignee Title
JP2002257241A (en) * 2001-02-27 2002-09-11 Nippon Gasket Co Ltd Gasket for three-face superimposed part
JP2004068672A (en) * 2002-08-05 2004-03-04 Taiho Kogyo Co Ltd Sealing structure for engine
JP2006250199A (en) * 2005-03-09 2006-09-21 Nissan Motor Co Ltd Seal structure for three-member assembly
JP2008019793A (en) * 2006-07-13 2008-01-31 Toyota Motor Corp Seal structure of internal combustion engine

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Publication number Priority date Publication date Assignee Title
GB2535685A (en) * 2014-11-17 2016-08-31 Ford Global Tech Llc An engine cover having a sealed joint
GB2535685B (en) * 2014-11-17 2018-03-07 Ford Global Tech Llc An engine cover having a sealed joint
CN105736697A (en) * 2015-12-09 2016-07-06 中国船舶重工集团公司第七二六研究所 Watertight coating structure
JP7363744B2 (en) 2020-10-30 2023-10-18 株式会社豊田自動織機 electric compressor

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