JP2007170336A - Supporting structure of cover member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a support structure of a cover member for an engine and an intake manifold which improves cover-member-supporting strength while ensuring an ease of assembling the cover member. <P>SOLUTION: The support structure of the cover member covering the upper part of the engine and the intake manifold is provided with a support mechanism installed in the intake manifold so as to support the cover member while being locked with a locking part of the cover member. The support mechanism comprises a base part integrally formed on the top face of the intake manifold, a shaft-like part which is formed continuously with the base part and extends orthogonally to the direction of engine-cylinder row in a plan view, a nearly cylindrical elastic member mounted to the shaft-like part, and a support part which is formed integrally on the top face of the intake manifold and positioned below the shaft-like part and the elastic member so as to restrict downward displacement of the members. A clamp member is provided on the side of the bottom face of the cover member in the locking part so as to clamp the elastic member in the state in which the cover member is assembled to the intake manifold. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an engine and a support structure for a cover member that covers an upper portion of an intake manifold provided on one side of the engine.

  As is well known, harnesses and hoses are complicated in the upper and surrounding parts of the engine mounted in the engine room of the vehicle, so the appearance with the hood opened is not necessarily good. It is known that various radiated sounds from the engine penetrate the dash panel and enter the passenger compartment. In recent years, in order to improve such a problem, it has become common to apply a cover member that covers the upper part of the engine.

  In order to expand the desired effect of this type of cover member, it is desirable to cover the widest possible range above the engine. As one of them, a cover member that covers up to an upper portion of an intake manifold attached to the side of the engine together with the engine body is known. In order to support such a cover member, at least three support positions are required between the cover member and the engine head cover and the intake manifold. In the first place, the engine and the intake manifold are separate from each other. Since the positional accuracy on the surface may not be ensured satisfactorily, it is desirable to configure the support structure so that the assembling property of the cover member is not affected even if the positional accuracy varies slightly. In this support structure, it is desirable that the cover member be supported via an elastic body so as not to become a new drive source driven by the engine. Furthermore, considering engine maintenance, it is desirable that the support structure be as simple as possible.

  As disclosed in Japanese Patent Application No. 2004-224517, the present applicant has provided a boss portion extending in a direction perpendicular to the cylinder row direction of the engine as a support structure for the cover member on the intake manifold in response to such a request. The structure supported by the reinforcing ribs is integrally formed at the time of forming the intake manifold, and a metal bar member fitted with an elastic cylinder member is twisted into the boss part and protrudes forward of the boss part. A claw member with a C-shaped cross section attached was developed from above. According to this support structure, even if there is a variation in position between the engine and the intake manifold, it is absorbed by a rod-like member extending in a direction orthogonal to the cylinder row direction of the engine, the snap elasticity of the claw member, the degree of freedom of deformation of the elastic cylinder member, etc. Can achieve the intended purpose.

JP 2005-248788 A

However, when the cover member is assembled from above the engine and the intake manifold, the bending force acting on the rod-like member may act excessively on the boss portion depending on the amount of force, which may cause cracks in the boss portion. . As one of the factors, a variation in the degree of twisting of the metal rod-like member with respect to the resin boss portion can be considered.
Conventionally, for example, Japanese Patent Laying-Open No. 2005-248788 (Patent Document 1) discloses a support structure for a cover member that covers the intake manifold, but this includes a structure in which the cover member is supported only by the intake manifold. Is only shown.

  The present invention has been made in view of the above technical problem, and has an engine and an intake manifold capable of improving support strength for a cover member while ensuring ease of assembly of the cover member with a relatively simple configuration. It is an object of the present invention to provide a support structure for a cover member.

  Accordingly, an invention according to claim 1 of the present application is provided in the engine in a support structure for a cover member that covers an upper portion of an engine and an intake manifold provided on one side of the engine. A first support mechanism for supporting the cover member while engaging with the engagement portion; and the cover member is supported on the intake manifold and engaged with the second engagement portion on the cover member side. A second support mechanism portion, and the second support mechanism portion is formed integrally with the upper surface of the intake manifold, and is formed continuously with the base portion. A shaft-shaped portion extending in a direction orthogonal to the cylinder row direction of the engine and a substantially cylindrical elastic member, the elastic member being attached to the shaft-shaped portion so that the shaft-shaped portion is fitted into the cylinder And the top surface of the intake manifold And a support portion that is integrally formed and is positioned below the shaft-shaped portion and the elastic member attached to the shaft-shaped portion and restricts the downward displacement of the shaft-shaped portion and the elastic member. Is provided at a portion facing the elastic member on the second support mechanism portion side on the lower surface side of the cover member, and holds the elastic member in the assembled state of the cover member to the intake manifold. It is characterized by having a clamping member.

  The invention according to claim 2 of the present application is the invention according to claim 1, wherein the intake manifold is configured by joining a plurality of divided molded bodies formed by resin injection molding, and the base portion and the shaft-shaped portion. The support portion is formed so as to extend along the die-cutting direction of any one of the divided molded bodies.

  Furthermore, the invention according to claim 3 of the present application is the invention according to claim 2, wherein the intake manifold includes a surge tank portion disposed on one side of the engine and a curve extending upward from the surge tank portion. And a branch pipe portion connected to the engine, and a joining line between the divided molded bodies that are joined to each other extends along a substantially vertical plane.

  Furthermore, in the invention according to claim 4 of the present application, in the invention according to claim 3, the base portion is disposed in the vicinity of the joining line, and is formed on one of the divided molded bodies forming the joining line. In addition, the shaft portion, the support portion, and the rib supporting the support portion are formed so as to extend above the other divided molded body from the base portion.

  Furthermore, the invention according to claim 5 of the present application is the invention according to claim 3, wherein the base portion is disposed in the vicinity of the joining line and is formed on one of the divided molded bodies forming the joining line. In addition, the shaft-like portion and the support portion are formed so as to extend from the base portion above the divided molded body on which the base portion is formed, and a rib for supporting the support portion is provided below the support portion. It is formed between the upper surface of the divided molded body in which is formed.

  According to the invention according to claim 1 of the present application, since the support portion for restricting the downward displacement of the shaft-like portion and the elastic member is provided in the second support mechanism portion, the support mechanism portion provided on the intake manifold side is compared. The support strength can be improved while ensuring the ease of assembling the cover member with a simple structure.

  Further, according to the invention according to claim 2 of the present application, since the base portion, the shaft-like portion, and the support portion are formed so as to extend along the die-cutting direction of any one divided molded body, the base portion, the shaft-like shape are formed. The molding of the part and the support part can be facilitated.

  Further, according to the invention of claim 3 of the present application, since the joining line between the divided molded bodies to be joined extends along a substantially vertical plane, the structure of the intake manifold can be simplified.

  Furthermore, according to the invention according to claim 4 of the present application, the shaft-shaped portion formed on one of the divided molded bodies, the support portion, and the rib supporting the support portion are located above the other adjacent divided molded body. By forming so as to extend in the direction, it is possible to ensure the support strength for the cover member.

  Furthermore, according to the invention according to claim 5 of the present application, the rib that supports the support portion is formed between the upper surface of the divided molded body on which the base portion is formed below the support portion. The support strength for the cover member can be further improved.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
(Embodiment 1)
FIGS. 1 to 8 illustrate the first embodiment of the present invention. FIG. 1 shows an engine 10 and an intake manifold 20 having a support structure for a cover member 30, and a cover removed therefrom. It is a disassembled perspective view which shows a member. In this figure, the cylinder block 2 of the engine 10 and the various auxiliary devices provided in the periphery thereof are shown by phantom lines (dashed lines) only in their outer shapes. In FIG. 1, the right front side of the paper corresponds to the rear side of the engine 10, and the back left side of the paper corresponds to the front side of the engine.

  The engine 10 has an engine main body portion 4 including a cylinder block 2 and a cylinder head 3 disposed on the upper side of the cylinder block 2, and four cylinders are arranged along a longitudinal direction D1 of the engine main body portion 4. Is an in-line four-cylinder engine. In the engine room (not shown), the engine 10 has a crankshaft (not shown) incorporated in the engine 1 along the vehicle width direction so that the longitudinal direction of the main body 4 is parallel to the longitudinal direction of the vehicle body. It is arranged horizontally so as to extend. A transmission (not shown) is disposed on the rear side of the engine 1.

  A cylinder head cover 5 is disposed above the cylinder head 3. Further, an intake manifold 20 for introducing intake air into each cylinder is disposed on the side of the engine body 4 (the left front side in FIG. 1). The intake manifold 20 includes four branch pipe portions 21A, 21B, 21C, and 21D, and each branch pipe portion communicates with each cylinder configured in the engine main body portion 4.

  As shown in FIG. 1, a solenoid valve that supplies negative pressure to a negative pressure actuator that operates an intake flow control valve and a variable intake valve (not shown) between the intake manifold 20 and between the engine 10 and the intake manifold 20. , Harnesses such as harnesses to the ignition plugs of the cylinders of the engine 10, and piping such as delivery pipes are complicated. In the first embodiment, a resin cover member 30 having a shape covering the upper side of the engine 10 and the upper side of the intake manifold 20 is adopted, and these harnesses and piping are supported above the engine 10 and the intake manifold 20. The cover member 30 is generally covered. Thereby, in addition to the improvement in designability, radiation of various noises from the engine can be suppressed. Although not particularly illustrated, a plurality of linear ribs that increase strength may be integrally provided on the surface of the cover member 30.

  In the first embodiment, two support mechanism portions (first support mechanism portions) 11 are provided on the upper surface side of the engine 10, and two support mechanism portions (second support mechanism portions) are provided on the upper surface side of the intake manifold 20. ) 50 and the cover member 30 is stably supported at a total of four points above the engine 10 and the intake manifold 20. On the other hand, on the lower surface side of the cover member 30 (side facing the engine and the intake manifold 20), the first and second engaging portions 40, which are engaged with the first and second support mechanism portions 11, 50, respectively. 60 is provided.

  First, the 1st support mechanism part 11 provided in the upper surface side (specifically cylinder head cover 5) of the engine 10 and the 1st engaging part 40 corresponding to it are demonstrated. In the first embodiment, the first support mechanism portion 11 is disposed at a corner portion of the engine head cover 5 (a corner portion far from the intake manifold 20). FIG. 2 is an explanatory cross-sectional view showing an engagement state between the first support mechanism portion 11 provided on the engine 10 side and the first engagement portion 40 provided on the cover member 30 side. The first support mechanism portion 11 includes a boss portion 11 a formed on the upper surface of the engine 10. A hole is provided in the center of the boss portion 11a, and a lower portion 11b ″ of the pin member 11b is press-fitted therein. A male screw is engraved on the upper portion 11b ′ of the pin member 11b, and the male screw is engaged therewith. The lower part of the coupling member 11c is screwed in. The engaging member 11c has a hollow shaft, and a female screw that engages with the upper part 11b 'of the pin member 11b is engraved on the inner periphery of the lower part. The member 11c is disposed in such a manner that the member 11c is erected from the upper heboss portion 11a of the engine 10 via a pin member 11b. A portion 11c ′ is formed, and the engaging portion 11c ′ includes a seat portion 11c ″ that largely protrudes from the outer peripheral surface thereof.

  The first engagement portion 40 includes a cylindrical attachment portion 41 that protrudes downward from the lower surface of the cover member 30 main body. A hollow elastic member 42 made of rubber or the like is attached inside the attachment portion 41. A slit 41 a is partially provided on the peripheral wall of the attachment portion 41, and the flange 42 a protruding from the outer peripheral surface of the elastic member 42 is fitted into the slit 41 a, so that the elastic member 42 is attached to the attachment portion 41. Mounted inside. Further, the inner peripheral surface of the elastic member 42 is provided with a flange 42b that protrudes inward.

  When the cover member 30 is mounted on the engine 10, the first engagement portion 40 on the cover member 30 side is pushed into the first support mechanism portion 11 on the engine 10 side from above the engine 10, and the lower surface of the elastic member 42 Is pushed until it hits the seat 11c ″ of the engaging member 11c. As a result, the flange portion 42b of the elastic member 42 fits into the concave portion of the outer peripheral surface of the engaging portion 11c ′ of the engaging member 11c, and the first engagement. The portion 40 and the first support mechanism portion 11 are engaged.When the cover member 30 is removed, when the cover member 10 is lifted above the engine 10, the engagement member is caused by elastic deformation of the elastic member 42. The engagement with 11c is released.

  As described above, in the present embodiment, the first support mechanism 11 and the first engagement portion 40 can be easily engaged and released, but for example, a fastening means such as a screw or the like. The method may be adopted. In the present embodiment, another set of the first support mechanism portion 11 and the first engagement portion 40 is provided, but the structure thereof is the same as that described with reference to FIG. Therefore, further explanation is omitted here.

  Next, the second support mechanism portion 50 provided on the upper surface side of the intake manifold 20 and the second engagement portion 60 corresponding thereto will be described. FIG. 3 is a front view of the intake manifold 20 attached to the side portion of the engine body 4, and FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. 3 and 4, the engine 10 is omitted.

  In the first embodiment, as can be clearly seen from FIG. 3, the second support mechanism portion 50 is provided on the upper surface side of the intake manifold 20 so as to be symmetrical with respect to the left and right branch pipe portions 21 a and 21 d. . The intake manifold 20 is configured by combining three divided molded bodies, that is, an outer divided molded body 20A, a middle divided molded body 20B, and an inner divided molded body 20C. In the first embodiment, the second support mechanism section is formed. 50 is formed integrally with the middle divided body 20B.

  As shown in FIG. 4, the intake manifold 20 includes a surge tank portion 24 disposed on the side of the engine 10, and the branch pipe portion 21c (the same applies to the branch pipe portions 21a, 21b, and 21d). It extends upward from the portion 24 and is curved and connected to the engine 10. In the first embodiment, as shown in FIG. 4, the structure of the intake manifold 20 is simplified, and the outer divided molded body 20 </ b> A and the middle divided molded body 20 </ b> B that are joined to each other have a joint line L <b> 1 formed by them. It is formed so as to extend along a vertical plane.

  Further, the second support mechanism portion 50 has a longitudinal direction D2 set in a direction substantially orthogonal to the mold split surface S1 of the middle split molded body 20B, and is in the same direction as the mold release direction of the middle split molded body 20B. It will be formed protruding. In addition, since the 2nd support mechanism part 50 is formed in the upper surface of the branch pipe parts 21a and 21d in this Embodiment 1, it is shown with the virtual line (two-dot chain line) in FIG.

  5 and 6 are a front view and a side view, respectively, of the second support mechanism unit 50 provided on the intake manifold 20 side. Here, since the structures of the two second support mechanism portions 50 formed symmetrically are the same, only the second support mechanism portion 50 formed in the branch pipe portion 21d of the intake manifold 30 is shown and branched. A description of the structure of the other second support mechanism 50 provided in the tube portion 21a is omitted.

  The second support mechanism 50 is formed continuously with the leg (base) 51 formed integrally with the upper surface of the intake manifold 20 (strictly, the middle divided molded body 20B), and the leg 51, A shaft-like portion 52 extending in a direction D2 (see FIG. 6) perpendicular to the cylinder row direction D1 (see FIG. 1) of the engine 10 and the shaft-like portion 52 so that the shaft-like portion 52 is fitted into the cylinder. And a cylindrical rubber member (elastic member) 56 (see FIG. 6) to be attached. The longitudinal direction of the rubber member 56 attached to the shaft-like portion 52 and the shaft-like portion 52 extends in a direction D2 substantially orthogonal to the cylinder row direction D1 of the engine 10 in plan view.

  In the first embodiment, the second support mechanism portion 50 is formed integrally with the upper surface of the middle divided molded body 20B, and the shaft portion 52 and the rubber member 56 attached to the shaft portion 52 are provided. A support portion 53 that is positioned below and restricts the downward displacement of the shaft-like portion 52 and the rubber member 56, and is formed integrally with the upper surface of the middle divided molded body 20B, and is a reinforcement that supports the support portion 53 below the support portion 53. Ribs 54 are provided. The support portion 53 and the reinforcing rib 54 are for reinforcing the shaft-like portion 52 and the rubber member 56 against a load from above on the shaft-like portion 52 and the rubber member 56 attached to the shaft-like portion 52. 5, the support portion 53 has a curved surface 53 a along the outer peripheral surface of the shaft-like portion 52 on the side facing the shaft-like portion 52. On the other hand, as can be seen from FIG. 6, the reinforcing rib 54 is formed as an inclined rib that extends from the vicinity of the lower end portion of the leg portion 51 to converge below the protruding end portion of the support portion 53.

  Here, the size and arrangement of the shaft-like portion 52, the support portion 53, and the rubber member 56 are determined between the support portion 53 and the rubber member 56 in a state where the rubber member 56 is attached to the shaft-like portion 52. Is set to have a slight gap. Thus, when the cover member 30 is pressed from above and the clamp member 62 is pressed against the shaft-like portion 52 and the rubber member 56, the initial displacement (the cover member) downward of the shaft-like portion 52 and the rubber member 56 is achieved. The displacement at the time of assembling 30 is effectively received by the support portion 53.

  Further, in the first embodiment, as described above, the intake manifold 20 is configured by joining the outer divided molded body 20A, the middle divided molded body 20B, and the inner divided molded body 20C after injection molding, and the second support structure. Although the portion 50 is provided on the upper surface of the middle divided molded body 20B, the leg portion 51 of the second support mechanism section 50 is connected to the outer divided molded body 20A and the middle divided molded body 20B by a joining line L1 (see FIG. 4), the shaft-shaped portion 52, the support portion 53, and the reinforcing rib 54 are formed so as to extend from the leg portion 51 above the outer divided molded body 20A.

  Furthermore, in the first embodiment, the leg portion 51, the shaft-like portion 52, the support portion 53, and the reinforcing rib 54 are formed so as to protrude in the same direction as the die cutting direction of the middle divided molded body 20B after injection molding. Yes. Accordingly, the second support mechanism portion 50 can be easily formed at the time of injection molding of the middle divided molded body 20B, and the leg portion 51, the shaft-like portion 52, the support portion 53, and the reinforcing rib 54 are easily formed. be able to. Furthermore, in this case, there is a manufacturing advantage that the existing mold can be continuously utilized by forming the mold of the second support mechanism portion 50 in the mold for the existing middle divided molded body 20B. .

  7 and 8 are a perspective view and a cross-sectional view showing an engagement state between the second support mechanism portion 50 provided on the intake manifold 20 side and the second engagement portion 60 provided on the cover member 30 side, respectively. It is explanatory drawing. More strictly, FIG. 8 is a cross-sectional view in which the shaft-like portion 52 of the second support mechanism portion 50 is cut along a vertical plane along its longitudinal direction.

  The second engagement portion 60 includes a block-shaped attachment portion 61 that protrudes downward from the lower surface of the cover member 30 main body. A clamp member 62 having a substantially C-shaped cross section as a whole is attached to the attachment portion 61. The clamp member 62 is an integrated member connected at the upper end and opened at the lower end, and is formed of a member having elasticity such as a thin spring steel. The clamp member 62 is fixed to the attachment portion 61 with a screw 63. The screw 63 passes through the upper end connection portion of the clamp member 62 and is screwed into a hole drilled in the lower surface of the attachment portion 61, thereby fixing the clamp member 62 to the cover member 30. When the cover member 30 is made of resin as in the first embodiment, it is convenient for processing that the screw 63 is a wood screw and the female screw is not engraved in the hole of the attachment portion 61.

  As can be clearly understood from FIG. 7, the clamp member 62 has the rubber member 56 attached to the shaft-like portion 52 on the second support mechanism portion 50 side in the assembled state of the cover member 30 with respect to the intake manifold 20. The shaft portion 52 and the rubber member 56 are engaged with each other by being held in a direction orthogonal to the longitudinal direction (the direction indicated by reference sign D2 in FIG. 8).

  When the cover member 30 is attached to the intake manifold 20, the second engagement portion 60 on the cover member 30 side is biased from above the intake manifold 20 against the second support mechanism portion 50 on the intake manifold 20 side. Let At this time, the lower end of the clamp member 62 is pressed against the rubber member 56 attached to the shaft-like portion 52, and the clamp member 62 is elastically deformed so that the lower end is opened. Then, the shaft-like portion 52 and the rubber member 56 are inserted between the clamp members 62, and the second support mechanism portion 50 and the second engagement portion 60 are engaged.

  When the cover member 30 is mounted, a downward load is applied to the shaft-like portion 52 and the rubber member 56. However, by providing the support portion 53 and the reinforcing rib 54, the cover member 30 is durable and stable. Can be improved. That is, it is possible to improve the support strength of the support mechanism 50 with respect to the cover member 20 while ensuring the ease of assembling the cover member 30 while making the support mechanism 50 on the intake manifold 20 side simple. Moreover, since the support part 53 and the reinforcing rib 54 support the shaft-like part 52 and the rubber member 56 even after mounting, the support stability of the cover member 30 can be improved. When removing the cover member 30, when the cover member 10 is lifted above the intake manifold 20, the clamp member 62 is elastically deformed so that the lower end of the clamp member 62 is opened again, and the shaft-like portion 52 and the rubber member 56 are engaged. Is released.

  In the first embodiment, since the shaft-like portion 52 and the rubber member 56 extend in a direction D2 substantially orthogonal to the cylinder row direction D1 of the engine 10 in plan view, the clamp member 62, the shaft-like portion 52, and the rubber member 56 The engagement position has a degree of freedom in the substantially orthogonal direction D2. That is, the engagement position is arbitrary in a predetermined range in the direction of the line D2 shown in FIG. Therefore, even if the relative positional relationship is not constant between the first support mechanism portion 11 and the second support mechanism portion 50, that is, from the engine 10 to the intake manifold 20, the cover member 30 is smoothly attached. The cover member 30 can cover the harnesses and piping that are complicated from the engine 10 to the intake manifold 20. A sound insulating material 33 (see FIG. 8) is provided on the lower surface of the cover member 30 so as to reduce the noise of the engine 10 and the intake manifold 20. Thereby, not only the design property by the cover member 30 is improved but also the engine noise can be reduced.

  Further, the mounting of the cover member 30 is completed by pressing the cover member 30 against the engine 10 and the intake manifold 20 from above, so that the mounting operation is extremely simple. Similarly, when removing the cover member 30, the cover member 30 can be removed by lifting the cover member 30 upward, so that the removal work is very simple.

(Embodiment 2)
In the first embodiment described above, the second support mechanism 50 provided on the intake manifold 20 side is integrally formed on the upper surface of the middle divided molded body 20B. However, the second support mechanism 50 is not limited to this, Even when the support mechanism is integrally formed on the upper surface of the outer divided molded body 20A, for example, the same effects as those obtained by the support structure of the cover member 30 according to the first embodiment can be obtained. FIGS. 9 and 10 are respectively a front view and a side view of a second support mechanism 70 according to a mode (second embodiment) in which the second support mechanism is integrally formed on the upper surface of the outer divided molded body 20A, for example. It is. In the following, the same components as those in the first embodiment are denoted by the same reference numerals, and further description thereof is omitted.

  In the second embodiment, as can be seen from FIG. 10, the base 71 of the second support mechanism portion 70 is adjacent to the joining line L2 between the outer divided molded body 20B and the middle divided molded body 20B. The shaft portion 72 and the support portion 73 are formed from the base portion 71 so as to extend in a direction perpendicular to the joining line L2 of the outer divided molded body 20A, and the reinforcing rib 74 is formed on the support portion 53. It is formed as a rib extending vertically downward from the lower side of the projecting side end portion. The lower end portion of the reinforcing rib 74 is supported on the branch pipe portion by forming the second support structure portion 70 integrally with the outer divided molded body 20A. A cylindrical rubber member 76 is attached to the shaft-like portion 72 so that the shaft-like portion 72 is inserted into the cylinder. The engagement structure between the second support mechanism portion 70 and the second engagement portion on the cover member 30 side when the cover member 30 is mounted has been described with reference to FIGS. Since it is the same as that of a thing, further description is abbreviate | omitted.

  When the cover member 30 is mounted, a downward load is applied to the shaft-like portion 72 and the rubber member 76. However, by providing the support portion 73 and the reinforcing rib 74, the cover member 30 is durable and stable. Can be improved. That is, it is possible to improve the support strength of the support mechanism portion 70 with respect to the cover member 20 while ensuring the ease of assembling the cover member 30 while making the support mechanism portion 50 on the intake manifold 20 side simple. Further, in the second embodiment, the reinforcing rib 74 extends vertically downward from the lower side of the projecting side end portion of the support portion 53 and is supported on the branch pipe portion. Therefore, compared with the case of the first embodiment. The support strength of the second support mechanism 70 can be further improved.

  Further, also in the second embodiment, as in the first embodiment, the leg portion 71, the shaft-like portion 72, the support portion 73, and the reinforcing rib 74 that are integrally formed on the upper surface of the outer divided molded body 20A are provided. The outer divided molded body 20A after the injection molding is formed so as to protrude in the same direction as the die cutting direction. Thereby, the second support mechanism part 70 can be easily formed at the time of the injection molding of the outer divided molded body 20A, and the leg part 71, the shaft-like part 72, the support part 73, and the reinforcing rib 74 are easily formed. be able to. Further, in this case, by forming the mold of the second support mechanism portion 70 in the existing mold for the outer divided molded body 20A, the manufacturing advantage that the existing mold can be continuously used. There is.

It should be noted that the present invention is not limited to the illustrated embodiments, and it goes without saying that various improvements and design changes can be made without departing from the scope of the present invention.
For example, in the above-described embodiment, an in-line four-cylinder engine is assumed as the engine, but it goes without saying that the present invention is applicable to engines having other numbers of cylinders or other cylinder types. In addition, although the two second support mechanism portions are provided on the upper surface side of the intake manifold 20, one second support mechanism portion is provided at the center in the cylinder row direction of the intake manifold 20 without being limited thereto. It may be provided, or three or more second support mechanism portions may be provided along the cylinder row direction.

It is a disassembled perspective view which shows the engine and the intake manifold provided with the support structure of the cover member which concerns on Embodiment 1 of this invention, and the cover member in the state removed from them. FIG. 6 is an explanatory cross-sectional view showing an engagement state between the first support mechanism portion on the engine side and the first engagement portion on the cover member side. It is a front view of the intake manifold attached to the side part of an engine main-body part. It is a cross-sectional arrow view along the AA line in FIG. It is a front view of the 2nd support mechanism part provided in the intake manifold side. It is a side view of the 2nd support mechanism part provided in the intake manifold side. It is a perspective view showing the engagement state of the 2nd support mechanism part provided in the intake manifold side, and the 2nd engagement part provided in the cover member side. FIG. 6 is an explanatory cross-sectional view showing an engagement state between a second support mechanism provided on the intake manifold side and a second engagement part provided on the cover member side. It is a front view of the 2nd support mechanism part provided in the intake manifold side concerning Embodiment 2 of the present invention. It is a side view of the 2nd support mechanism part provided in the intake manifold side concerning the above-mentioned Embodiment 2.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Engine, 11 ... 1st support mechanism part, 20 ... Intake manifold, 20A ... Outer division molded body, 20B ... Middle division molded body, 20C ... Inner division molded body, 30 ... Cover member, 40 ... First engagement Joint part, 50, 70 ... second support mechanism part, 51, 71 ... leg part (base part), 52, 72 ... shaft-like part, 53, 73 ... support part, 54, 74 ... reinforcing rib, 56, 76 ... Rubber member (elastic member), 60 ... second engaging portion.

Claims (5)

In the support structure of the cover member that covers the engine and the upper side of the intake manifold provided on one side of the engine,
A first support mechanism which is provided in the engine and supports the cover member while being engaged with the first engagement portion on the cover member side;
A second support mechanism portion that is provided in the intake manifold and supports the cover member while engaging with the second engagement portion on the cover member side;
The second support mechanism section is
A base integrally formed on the upper surface of the intake manifold;
An axial portion that is formed continuously with the base and extends in a direction orthogonal to the cylinder row direction of the engine in plan view;
An elastic member having a substantially cylindrical shape, the elastic member being attached to the shaft-like portion so that the shaft-like portion is fitted into the cylinder;
A support portion that is integrally formed on the upper surface of the intake manifold, is positioned below the shaft-shaped portion and an elastic member attached to the shaft-shaped portion, and regulates a downward displacement of the shaft-shaped portion and the elastic member; While having
The second engaging portion is
A clamp member that is provided on a lower surface side of the cover member and that faces the elastic member on the second support mechanism side, and clamps the elastic member when the cover member is assembled to the intake manifold; A support structure for the cover member.   The intake manifold is configured by joining a plurality of divided molded bodies formed by resin injection molding, and the base portion, the shaft-shaped portion, and the support portion extend along the die-cutting direction of any one of the divided molded bodies. The cover member support structure according to claim 1, wherein the cover member support structure is formed. The intake manifold includes a surge tank portion disposed on one side of the engine, and a branch pipe portion that extends upward from the surge tank portion and is connected to the engine.
The support structure for a cover member according to claim 2, wherein a joining line between the divided molded bodies joined to each other extends along a substantially vertical plane.   The base is disposed in the vicinity of the joining line, and is formed on one of the divided molded bodies forming the joining line, and from the base, the shaft-like part, the support part, and a rib that supports the support part, 4. The cover member support structure according to claim 3, wherein the cover member support structure is formed to extend above the other divided molded body. The base is disposed in the vicinity of the joining line and is formed on one of the split molded bodies forming the joining line, and the shaft-like part and the support part are split from the base to form the base. Formed to extend above the body,
The support structure for a cover member according to claim 3, wherein the rib for supporting the support portion is formed between the upper surface of the divided molded body on which the base portion is formed below the support portion. .

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