JP4852019B2 - Gap blocking structure - Google Patents

Description

  The present invention relates to a gap blocking structure arranged in an engine room of a vehicle or the like.

  An engine cover is disposed in the engine room of the vehicle. A cylinder head cover is disposed below the engine cover at a predetermined interval. The cylinder head cover covers the cylinder head of the engine.

  In recent vehicles, another cover (cylinder head cover cover) may be disposed on the cylinder head cover. When the cylinder head cover cover is disposed, engine noise can be suppressed. A gap is interposed between the cylinder head cover cover and the engine cover.

  Further, in recent vehicles, a space is often provided on the back side of the hood panel in the engine room from the viewpoint of securing a pedestrian protection space at the time of a collision. In addition, from the viewpoint of securing a pedestrian protection space at the time of a collision or from the viewpoint of improving the turning ability of the vehicle, the center of gravity of the engine is often arranged behind the front wheels (vehicle compartment side). Further, the space in the engine room itself tends to be narrowed due to the expansion of the vehicle compartment space.

For this reason, relatively heat-sensitive members such as hoses and harnesses and high-temperature members such as turbochargers and exhaust manifolds are close to the front and rear sides of the gap between the cylinder head cover cover and the engine cover. May be placed.
Japanese Utility Model Publication No. 6-40112 Japanese Utility Model Publication No. 63-60009 JP 2005-264790 A

  As a countermeasure against heat in the engine room, for example, Patent Document 1 discloses a heat shield plate in which a cylinder head cover is extended. According to the heat shield plate of Patent Document 1, the sealing gasket can be protected from the heat of the exhaust manifold.

  Patent Document 2 discloses a protective cover attached to a cylinder head cover. According to the protective cover of Patent Document 2, peripheral devices can be protected from the heat of the exhaust manifold.

  Patent Document 3 discloses a soundproof cover attached to an engine. The soundproof cover of Patent Document 3 includes a heat shield. With the heat shield, the sound absorbing member can be protected from the heat of the exhaust manifold.

  Neither of these patent documents 1 to 3 discloses a cylinder head cover cover. Further, the heat shield plate of Patent Document 1, the protective cover of Patent Document 2, and the heat shield portion of Patent Document 3 are all fixed to other members in a cantilever shape. Alternatively, it extends from another member. For this reason, when a free end vibrates, there exists a possibility that noises, such as a chatter sound, may generate | occur | produce. In addition, the air flow cannot be blocked near the free end. Therefore, heat shielding tends to be insufficient.

  The gap blocking structure of the present invention has been completed in view of the above problems. Therefore, an object of the present invention is to provide a gap blocking structure that hardly generates noise and has high heat blocking properties.

(1) In order to solve the above-described problem, the gap blocking structure of the present invention includes an engine cover, a cylinder head cover cover disposed on the front side of the cylinder head cover that is disposed at a predetermined interval on the back side of the engine cover, At least a part of a gap between the engine cover and the cylinder head cover cover is cut off, and the elastic member is formed integrally with one of the engine cover and the cylinder head cover cover, and the other elastic member it comprises of a blocking member bullet contact by utilizing an elastic force, and separates the shielding member, the heat source on one is, the protective subject member to the other, characterized by being arranged .

  A blocking member is disposed in the gap between the engine cover and the cylinder head cover cover of the gap blocking structure of the present invention. The blocking member is interposed between the heat source and the protection target member. For this reason, the member to be protected can be protected from the heat of the heat source.

  The blocking member is formed integrally with one of the engine cover and the cylinder head cover cover. For this reason, compared with the case where it forms in another body, a number of parts can be decreased.

  The other of the engine cover and the cylinder head cover cover (the one not formed integrally with the blocking member) includes an elastic member. The blocking member is in elastic contact with the elastic member. For this reason, the vibration of the blocking member can be suppressed. Accordingly, it is possible to suppress the generation of noise such as chattering noise.

  Further, since the blocking member is in elastic contact with the elastic member, no gap is generated between the blocking member and the elastic member. Therefore, it is possible to suppress the flow of air through the gap between the blocking member and the elastic member. As described above, according to the gap blocking structure of the present invention, the heat blocking property is enhanced.

  (1-1) Preferably, in the configuration of (1) above, it is better to have a configuration in which a sound source is arranged on one side and a passenger compartment is arranged on the other side with the blocking member interposed therebetween. According to this structure, it can suppress that the noise from a sound source transmits to a vehicle interior.

  (1-2) Preferably, in the configuration of the above (1), when the blocking member is in elastic contact with the elastic member, the burying allowance of the blocking member with respect to the elastic member is set by the mounting structure of the engine cover. It is better to have a configuration that is possible.

  According to this configuration, the burial allowance can be freely set according to the vehicle type. In other words, the elastic contact force can be freely set in different vehicle types. Moreover, the burial allowance of a plurality of vehicles of the same vehicle type can be made uniform. In other words, it is possible to suppress variations in the heat shielding performance in the same vehicle type.

  (2) Preferably, in the configuration of the above (1), the blocking member extends in a direction intersecting with an arrangement direction of the heat source and the protection target member, and at least a part of the blocking member It is better to have a configuration in which a curved portion is arranged (corresponding to claim 2). Here, the “curved portion” refers to a portion that is not linear. For example, the “curved portion” includes an arc portion and a square portion.

  According to this configuration, the blocking member can be brought into elastic contact with the elastic member with a larger elastic contact force than in the case where the blocking member is linear. For this reason, it can suppress that noise generate | occur | produces from the interruption | blocking member more reliably. In addition, since the elastic contact force is increased, the heat shielding property is further increased.

  Further, since the rigidity of the blocking member itself is increased by the curved portion, the vibration of the blocking member can be suppressed. Therefore, the generation of noise from the blocking member itself can be further suppressed.

  (3) Preferably, in the configuration of (1) or (2), the elastic member is disposed on a back side of the engine cover, and the blocking member is integrally formed with the cylinder head cover cover. It is better to have a configuration (corresponding to claim 3).

  Various adjacent parts are arranged around the engine. For this reason, when attaching an engine cover, it is necessary to ensure the stroke for attachment so that it may not interfere with adjacent parts. If the blocking member is formed integrally with the engine cover, it is necessary to secure a stroke for the blocking member in addition to the mounting stroke.

  On the other hand, in this configuration, the blocking member is formed integrally with the cylinder head cover cover. For this reason, when attaching an engine cover, it is not necessary to ensure even the stroke for blocking members. Therefore, the engine cover can be easily attached. Further, it is not necessary to change the structure of the engine cover in order to ensure the stroke for the blocking member. For this reason, the freedom degree of design of an engine cover becomes high. Moreover, the manufacturing cost of the engine cover can be reduced.

  In addition, a sound absorbing member having elasticity may already be provided on the back side of the engine cover to reduce engine noise. If this sound absorbing member is also used as the elastic member of this configuration, the number of parts is reduced.

  Further, the cylinder head cover cover, the blocking member, and the engine cover are arranged in the order of cylinder head cover cover → blocking member → engine cover with respect to the engine. For this reason, the heat resistance required for each member is, in descending order, the cylinder head cover cover → the blocking member → the engine cover. Therefore, if the shielding member is formed integrally with the engine cover, it is necessary to produce not only the heat shielding member but also the engine cover from a material having higher heat resistance than before.

  On the other hand, in this configuration, the blocking member is formed integrally with the cylinder head cover cover. For this reason, it is not necessary to make the engine cover with a material having high heat resistance. Therefore, the manufacturing cost of the engine cover can be reduced. In addition, it is possible to dispose a highly heat-resistant blocking member simply by making a small design change to the existing cylinder head cover cover.

(4) Preferably, in any one of the above configurations (1) to (3), the cylinder head cover cover is integrally formed with an attachment portion to which the protection target member is attached. between the heat source, the blocking member is not good is the mutual arrangement interposed.

  According to this configuration, the number of parts can be reduced as compared with the case where the cylinder head cover cover and the mounting portion are separate. In addition, the member to be protected can be protected from the heat of the heat source more reliably.

  (4-1) Preferably, in the configuration of (4), the member to be protected is a wiring member such as a hose or a harness. According to this configuration, the routing path can be set so as to protect the routing member from the heat of the heat source.

  According to the present invention, it is possible to provide a gap blocking structure that hardly generates noise and has high heat blocking properties.

  Hereinafter, an embodiment in which the gap blocking structure of the present invention is embodied in a front engine type vehicle (a type in which an engine is located in front of a passenger compartment) will be described.

<First embodiment>
[Configuration of gap blocking structure]
First, the configuration of the gap blocking structure of this embodiment will be described. In the drawings shown below, the azimuth (left and right) is defined based on the case of looking forward from the rear of the vehicle. FIG. 1 shows a top view of the gap blocking structure of the present embodiment. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1 (adjacent members are also arranged). FIG. 3 shows a transparent perspective view of the gap blocking structure. FIG. 4 shows an exploded perspective view of the gap blocking structure.

  As shown in FIGS. 1 to 4, the gap blocking structure 1 is disposed in the engine room 90 of the vehicle. The vehicle compartment (not shown) is disposed behind the engine room 90. The gap blocking structure 1 includes an engine cover 2, a cylinder head cover 3, and a blocking member 4.

  The engine cover 2 is disposed below the hood panel 91. The engine cover 2 covers the diesel engine 92 from above. The engine cover 2 is detachably attached to the diesel engine 92 by a bolt-nut structure.

  Specifically, bolts (not shown) project from a predetermined position on the upper surface of the diesel engine 92. On the other hand, a bolt through hole (not shown) is formed at a predetermined position of the engine cover 2 so as to face the bolt. The engine cover 2 is attached to the diesel engine 92 by inserting a bolt relatively into the bolt through hole and screwing a nut (not shown) to the tip of the bolt.

  The engine cover 2 includes a cover main body 20 and a sound absorbing member 21. The sound absorbing member 21 is included in the elastic member of the present invention. The cover main body 20 is made of ABS (acrylonitrile, styrene, butadiene copolymer) resin, and has a shallow rectangular tray shape that opens downward. Hole portions 200 and 201 are formed in the cover main body 20.

  The sound absorbing member 21 is made of urethane foam, and is arranged in a layered manner on the lower surface (upper bottom surface) of the cover body 20. The sound absorbing member 21 is integrally formed with the cover body 20 by foam molding.

  The cylinder head cover cover 3 is disposed below the engine cover 2 at a predetermined interval. The cylinder head cover cover 3 covers the cylinder head cover 920 of the diesel engine 92 from above. FIG. 5 shows an enlarged view in the circle V of FIG.

  As shown in FIGS. 3 to 5, the cylinder head cover cover 3 includes a cover main body 30, a sound absorbing member 31, an attachment portion 32, and a boss portion 33. The cover main body 30 is made of PA (polyamide) and has a shallow and narrow tray shape that opens downward.

  The attachment portion 32 is disposed on the upper surface of the cover main body 30. The attachment portion 32 is formed integrally with the cover main body 30. The attachment portion 32 includes a hose recess 320 and a harness recess 321. Both the hose recess 320 and the harness recess 321 have a C-shape opening upward. A hose 940 is attached to the hose recess 320. A harness 941 is attached to the harness recess 321. Both the hose 940 and the harness 941 are included in the protection target member of the present invention.

  The boss portion 33 has a short-axis cylindrical shape, and protrudes from the upper surface of the cover main body 30. The in-cylinder space of the boss portion 33 penetrates the cylinder head cover cover 3 in the vertical direction. The boss portion 33 is disposed below the hole portion 200 of the engine cover 2.

  The sound absorbing member 31 is made of urethane foam, and is arranged in a layered manner in the lower opening of the cover main body 30. The sound absorbing member 31 is integrally formed with the cover main body 30 by foam molding.

  The blocking member 4 protrudes upward from the upper surface of the cover main body 30 of the cylinder head cover cover 3. The blocking member 4 is formed integrally with the cover body 30 of the cylinder head cover cover 3. The blocking member 4 has a plate shape extending in the left-right direction across the boss portion 33. The blocking member 4 extends in a crank shape. That is, the blocking member 4 includes curved portions 40a to 40f that bend in the front-rear direction. Further, the blocking member 4 is disposed behind the mounting portion 32. The upper end of the blocking member 4 is in elastic contact with the lower surface of the sound absorbing member 21 of the engine cover 2.

  A gap between the lower surface of the sound absorbing member 21 of the engine cover 2 and the upper surface of the cover body 30 of the cylinder head cover cover 3 is blocked by the blocking member 4 between the front portion and the rear portion. A turbocharger 93 is disposed behind the blocking member 4. The turbocharger 93 is included in the heat source of the present invention. In contrast, an intake pipe 94 is disposed in front of the blocking member 4.

[Function and effect]
Next, the function and effect of the gap blocking structure of this embodiment will be described. A blocking member 4 is disposed in a gap between the engine cover 2 and the cylinder head cover cover 3 of the gap blocking structure 1 of the present embodiment. The blocking member 4 is interposed between the turbocharger 93 and the attachment portion 32 (that is, the hose 940 and the harness 941). For this reason, the hose 940 and the harness 941 can be protected from the heat of the turbocharger 93 (schematically shown in FIG. 5 by the white arrow A1).

  The blocking member 4 is integrally formed with the cylinder head cover cover 3. For this reason, the number of parts can be reduced as compared with the case where the blocking member 4 is separated from the cylinder head cover cover 3.

  The engine cover 2 includes a sound absorbing member 21. The upper end of the blocking member 4 is in elastic contact with the sound absorbing member 21. For this reason, the vibration of the blocking member 4 can be suppressed. Accordingly, it is possible to suppress the generation of noise such as chattering noise.

  Further, since the upper end of the blocking member 4 is in elastic contact with the sound absorbing member 21, no gap is generated between the upper end of the blocking member 4 and the sound absorbing member 21. Therefore, it is possible to suppress the air from flowing through the gap between the blocking member 4 and the sound absorbing member 21. As described above, according to the gap blocking structure 1 of the present embodiment, the heat blocking performance is enhanced.

  Further, according to the gap blocking structure 1 of the present embodiment, the intake pipe 94 is disposed in the front and the vehicle compartment is disposed in the rear, with the blocking member 4 interposed therebetween. For this reason, it is possible to suppress the intake noise from the intake pipe 94 (schematically indicated by the white arrow A2 in FIG. 5) from being transmitted to the passenger compartment.

  Further, according to the gap blocking structure 1 of the present embodiment, the blocking member 4 is in a direction (left-right direction) that intersects the arrangement direction (front-rear direction) between the turbocharger 93 and the mounting portion 32 (that is, the hose 940 and the harness 941). ). The blocking member 4 is formed with curved portions 40a to 40f. Therefore, the upper end of the blocking member 4 can be brought into elastic contact with the sound absorbing member 21 with a larger elastic contact force than when the blocking member 4 is linear. Therefore, it is possible to suppress the generation of noise from the upper end of the blocking member 4 more reliably. In addition, the heat shielding property between the upper end of the blocking member 4 and the sound absorbing member 21 becomes higher. Further, since the blocking member 4 extends in a crank shape, the sound insulation of the passenger compartment with respect to the intake pipe 94 is improved.

  Further, since the rigidity of the blocking member 4 itself is increased by the curved portions 40a to 40f, the vibration of the blocking member 4 can be suppressed. Therefore, it is possible to further suppress the generation of noise from the blocking member 4 itself.

  Further, in recent vehicles, the short nose is progressing, and the cowl of the passenger compartment is disposed forward (in the direction of the engine room 90) and the diesel engine 92 is disposed rearward (in the direction of the passenger compartment) of the conventional vehicle. It tends to be. For this reason, various adjacent members are disposed around the engine cover 2, such as a wiper mounting portion 95 shown in FIG. 2. Therefore, when the engine cover 2 is attached, it is difficult to secure a stroke in the vertical direction even in the present situation. If the blocking member 4 is formed integrally with the engine cover 2, it is necessary to secure a stroke for the blocking member 4 when the engine cover 2 is attached. For this reason, it is more difficult to secure a stroke in the vertical direction than in the current situation.

  In this regard, according to the gap blocking structure 1 of the present embodiment, the blocking member 4 is formed integrally with the cylinder head cover cover 3. For this reason, when attaching the engine cover 2, it is not necessary to ensure the stroke for the blocking member 4. Therefore, the engine cover 2 can be easily attached. Further, it is not necessary to change the structure of the engine cover 2 in order to ensure the stroke for the blocking member 4. For this reason, the freedom degree of design of the engine cover 2 becomes high. Moreover, the manufacturing cost of the engine cover 2 can be reduced.

  In addition, on the back side of the engine cover 2, an elastic sound absorbing member 21 is already provided to reduce noise of the diesel engine 92. In the case of the gap blocking structure 1 of the present embodiment, the sound absorbing member 21 is also used as an elastic member for the gap blocking structure 1 of the present invention. For this reason, compared with the case where the elastic member for the clearance gap structure 1 of this invention is arrange | positioned separately, a number of parts decreases.

  Further, the blocking member 4 is formed integrally with the cylinder head cover cover 3. For this reason, compared with the case where the blocking member 4 is formed integrally with the engine cover 2, the engine cover 2 does not need to be made of a material having high heat resistance. Therefore, the manufacturing cost of the engine cover 2 can be reduced. Further, the existing cylinder head cover cover 3 is originally made of a material having high heat resistance. For this reason, the blocking member 4 with high heat resistance can be disposed only by making a small design change to the existing cylinder head cover cover 3.

  The cylinder head cover cover 3 is integrally formed with a mounting portion 32. In addition, the blocking member 4 is interposed between the attachment portion 32 and the turbocharger 93. For this reason, the hose 940 and the harness 941 can be more reliably protected from the heat of the turbocharger 93. In addition, the mounting portion 32 can set the routing route so that the hose 940 and the harness 941 are not affected by the heat of the turbocharger 93. In addition, a hose recess 320 and a harness recess 321 are separately arranged in the attachment portion 32. For this reason, it can control that hose 940 and harness 941 interfere. Further, the number of parts can be reduced as compared with the case where the cylinder head cover cover 3 and the mounting portion 32 are separate.

  Further, the diesel engine 92 has a louder noise than a gasoline engine (for example, an Otto cycle engine, a Miller cycle engine, an Atkinson cycle engine, etc.). For this reason, the cylinder head cover 3 is often disposed. Therefore, when the gap blocking structure 1 of the present embodiment is used for the diesel engine 92, the existing cylinder head cover cover 3 and the engine cover 2 can be used to arrange the gap blocking structure 1 of the present embodiment.

  Further, according to the gap blocking structure 1 of the present embodiment, the upper end of the blocking member 4 can be brought into elastic contact with the sound absorbing member 21 simultaneously with the mounting operation of the engine cover 2. For this reason, compared with the case where the process of making the upper end of the interruption | blocking member 4 elastically contact the sound-absorbing member 21 separately is required, the number of processes decreases.

  Further, the buried margin L1 (see FIG. 5) for the lower surface of the sound absorbing member 21 at the upper end of the blocking member 4 can also be set by the mounting structure (bolt-nut structure) of the engine cover 2. For this reason, the burial allowance L1 can be set freely according to the vehicle type. In other words, the elastic contact force can be set freely. Moreover, the burial allowance L1 of the several vehicle of the same vehicle type can be equalize | homogenized. In other words, it is possible to suppress variations in the shielding performance against the heat and sound of the gap shielding structure 1.

< Reference form>
A gap blocking mechanism according to this reference embodiment, the gap blocking mechanism according to the first embodiment, the difference is that the blocking member exhibits a wavy. Moreover, the attachment part is not arrange | positioned at the cover for cylinder head covers. Therefore, only the differences will be described here.

FIG. 6 shows a transparent perspective view of the gap blocking structure of the reference embodiment. In addition, about the site | part corresponding to FIG. 3, it shows with the same code | symbol. As shown in FIG. 6, the blocking member 4 extends in a wavy shape (sine curve shape) in the left-right direction. That is, the curved portion is arranged over substantially the entire length of the blocking member 4. Further, the cylinder head cover cover 3 is not provided with an attachment portion for attaching a hose or a harness.

Gap blocking mechanism 1 of the present reference embodiment, portions common configurations, has the same effect as the gap blocking mechanism according to the first embodiment. Further, the gap blocking mechanism 1 according to the present reference embodiment, the blocking member 4 exhibits a wavy. For this reason, the upper end of the blocking member 4 can be elastically contacted with the sound absorbing member of the engine cover 2 with a larger elastic contact force. Therefore, it is possible to suppress the generation of noise from the upper end of the blocking member 4 more reliably. In addition, the heat shielding property between the upper end of the blocking member 4 and the sound absorbing member becomes higher. Further, since the blocking member 4 extends in a wave shape, the sound insulation of the passenger compartment with respect to the intake pipe 94 is improved. Further, the gap blocking mechanism 1 according to the present reference embodiment, no attachment portion is formed in the cover 3 for a cylinder head cover. For this reason, manufacture of the cover 3 for cylinder head covers becomes easy.

< Second embodiment>
The difference between the gap blocking structure of the present embodiment and the gap blocking structure of the first embodiment is that the blocking member is formed integrally with the engine cover instead of the cylinder head cover cover. Therefore, only the differences will be described here.

  FIG. 7 shows a cross-sectional view of the vicinity of the cylinder head cover cover of the gap blocking structure of the present embodiment. In addition, about the site | part corresponding to FIG. 5, it shows with the same code | symbol. As shown in FIG. 7, the sound absorbing member 35 of the cylinder head cover cover 3 passes from the lower surface (back surface) of the cover body 30 to the upper surface (front surface) via the rear end of the cover body 30. The sound absorbing member 35 is included in the elastic member of the present invention. The sound absorbing member 35 is made of urethane foam. The sound absorbing member 35 is integrally formed with the cover body 30 by foam molding.

  On the other hand, a plate-shaped blocking member 5 protrudes from the lower surface of the cover body 20 of the engine cover 2. The cover body 20 is made of PA. The blocking member 5 is formed integrally with the cover body 20. The lower end of the blocking member 5 is elastically in contact with a portion of the sound absorbing member 35 that wraps around the upper surface of the cover body 30.

  The gap blocking structure 1 of the present embodiment has the same effects as the gap blocking structure of the first embodiment with respect to the parts having the same configuration. When a sufficient stroke can be secured when the engine cover 2 is attached, the blocking member 5 may be disposed on the engine cover 2 as in the gap blocking structure 1 of the present embodiment.

  Further, according to the gap blocking structure 1 of the present embodiment, the lower end of the blocking member 5 can be brought into elastic contact with the sound absorbing member 35 simultaneously with the mounting operation of the engine cover 2. For this reason, compared with the case where the process of making the lower end of the interruption | blocking member 5 elastically contact the sound absorption member 35 separately is required, the number of processes decreases.

  Further, the burying allowance L2 (see FIG. 7) with respect to the upper surface of the sound absorbing member 35 at the lower end of the blocking member 5 can also be set by the mounting structure of the engine cover 2. For this reason, the burial allowance L2 can be set freely according to the vehicle type. In other words, the elastic contact force can be set freely. Moreover, the burial allowance L2 of the several vehicle of the same vehicle type can be equalize | homogenized. In other words, it is possible to suppress variations in the shielding performance against the heat and sound of the gap shielding structure 1.

<Others>
The embodiment of the gap blocking structure of the present invention has been described above. However, the embodiment is not particularly limited to the above embodiment. Various modifications and improvements that can be made by those skilled in the art are also possible.

  For example, in the above embodiment, the clearance blocking structure of the present invention is used for a front engine type vehicle, but a rear engine type (a type in which an engine is located behind the passenger compartment) vehicle (for example, a bus), a midship type ( The clearance blocking structure of the present invention may be used for a vehicle of a type in which an engine is in the vicinity of the passenger compartment.

  Further, the arrangement direction of the engine cover 2 and the cylinder head cover cover 3 is not particularly limited. For example, the engine cover 2 may be arranged on the front, rear, left and right sides of the engine. Further, the cylinder head cover cover 3 may be disposed so as to be appropriately inclined in accordance with the shape of the engine and the angle of the cylinder.

  Further, the blocking members 4 and 5 may not be disposed over the entire length in the left-right direction of the gap between the engine cover 2 and the cylinder head cover cover 3. What is necessary is just to arrange | position so that the interruption | blocking members 4 and 5 may interpose between a protection object member (the hose 940, the harness 941) and the heat source (turbocharger 93). Moreover, in the said embodiment, although the clearance gap structure of this invention was used for the diesel engine 92, you may use the clearance gap cutoff structure of this invention for a gasoline engine.

  Further, the mounting structure of the engine cover 2 is not limited to the bolt-nut structure. A pin having a spherical tip instead of the bolt may be disposed in the diesel engine 92, and a concave portion having a spherical inner space may be disposed in the engine cover 2 instead of the bolt through hole. Then, the engine cover 2 may be attached to the diesel engine 92 by press-fitting a pin into the recess. Even in this case, the burial margins L1 and L2 can be freely set by adjusting the press-fitting allowance of the pin to the recess.

In the first embodiment and the reference embodiment, the cover main body 20 of the engine cover 2 is made of ABS resin, but may be made of other resin such as PP (polypropylene). In the above embodiment, the cover main body 30 of the cylinder head cover cover 3 is made of PA, and in the second embodiment, the cover main body 20 of the engine cover 2 is made of PA, but may be made of other resin. What is necessary is just to ensure desired heat resistance.

  Moreover, in the said embodiment, although the turbocharger 93 was illustrated as a heat source of this invention, an exhaust manifold etc. may be sufficient, for example. A plurality of heat sources may be arranged.

  Moreover, in the said embodiment, although the hose and the harness were illustrated as a protection object member of this invention, for example, various sensors, various valves, etc. may be sufficient. A plurality of members to be protected may be arranged.

  Moreover, in the said embodiment, although the intake piping 94 was illustrated as a sound source of a structure (1-1), an air cleaner etc. may be sufficient, for example. A plurality of sound sources may be arranged.

It is a top view of the gap blocking structure of the first embodiment. It is II-II sectional drawing of FIG. It is a permeation | transmission perspective view of the clearance gap interruption | blocking structure. It is a disassembled perspective view of the clearance gap structure. It is an enlarged view in the circle V of FIG. It is a permeation | transmission perspective view of the clearance gap structure of a reference form. It is sectional drawing of the cover vicinity for cylinder head covers of the clearance gap structure of 2nd embodiment.

Explanation of symbols

1: Clearance blocking structure.
2: engine cover, 20: cover body, 21: sound absorbing member (elastic member), 200: hole, 201: hole.
3: cover for cylinder head cover, 30: cover body, 31: sound absorbing member, 32: mounting portion, 33: boss portion, 35: sound absorbing member (elastic member), 320: recess for hose, 321: recess for harness.
4: Blocking member, 40a-40f: curved part.
5: Blocking member.
90: Engine room, 91: Hood panel, 92: Diesel engine, 93: Turbocharger (heat source), 94: Intake piping, 95: Wiper mounting part, 920: Cylinder head cover, 940: Hose (member to be protected), 941: Harness (member to be protected).
A1: Arrow, A2: Arrow, L1: Buried allowance, L2: Buried allowance.

Claims (3)

An engine cover,
A cylinder head cover cover disposed on the front side of the cylinder head cover disposed at a predetermined interval on the back side of the engine cover;
At least a part of a gap between the engine cover and the cylinder head cover cover is cut off, and the elastic member is formed integrally with one of the engine cover and the cylinder head cover cover, and the other elastic member A blocking member that elastically contacts using the elastic force of
With
A heat source is disposed on one side and a member to be protected is disposed on the other side, with the shielding member interposed therebetween .
The cylinder head cover cover is integrally formed with an attachment portion to which the member to be protected is attached,
A gap blocking structure in which the blocking member is interposed between the mounting portion and the heat source . The blocking member extends in a direction intersecting the arrangement direction of the heat source and the protection target member,
The gap blocking structure according to claim 1, wherein a curved portion is disposed on at least a part of the blocking member. The elastic member is disposed on the back side of the engine cover,
The gap blocking structure according to claim 1, wherein the blocking member is formed integrally with the cylinder head cover cover.

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