JP4446928B2 - Protector cover for internal combustion engine - Google Patents

Description

  The present invention relates to an improvement in a protector cover for protecting a fuel supply system component arranged outside an intake manifold in an internal combustion engine of a vehicle from an impact at the time of a vehicle collision.

Patent Document 1 discloses a protector cover that covers a fuel pump in an internal combustion engine of an automobile. This protector cover is formed by assembling a metal plate with a large area on the back of the resin cover body with bolts, and forming the shaft end of the bolt and the metal plate with the fuel pump covered with the protector cover. By contacting the projecting portion with the fuel pump, components such as a fuel pipe disposed between the fuel pump and the protector cover are protected from an impact at the time of a vehicle collision.
Japanese Unexamined Patent Publication No. 2004-360581 (pages 4, 5 and 3, 7-9)

  However, in Patent Document 1 described above, in order to protect components such as the fuel pipe, the metal plate must be disposed over a wide range with respect to the cover body, and from the viewpoint of reducing the weight by making the protector cover heavy. Is not preferred. Also, bolts for assembling the metal plate to the cover main body are necessary, increasing the number of parts and increasing the manufacturing cost, and the fastening work is necessary and the assemblability is deteriorated.

  The present invention has been made in view of this point, and an object of the present invention is to provide a protector cover that is lightweight and inexpensive and can be easily assembled.

  In order to achieve the above object, the present invention is arranged such that a metal reinforcing member is accommodated in a resin protrusion on the back surface of the cover body instead of a metal plate having a large area as in Patent Document 1. Features.

Specifically, the present invention is directed to a protector cover for an internal combustion engine disposed outside the intake manifold so as to cover at least a fuel supply system component disposed outside the intake manifold. I took it.

That is, the invention according to claim 1 includes a cover main body, the cover main body is made of resin, and a projecting portion having a hollow portion opened on the surface side of the cover main body on the back surface of the cover main body. A metal reinforcing member inserted integrally from the cover body surface side is integrally accommodated in the hollow portion so as to project integrally toward the intake manifold side, and the tip of the protrusion portion is in contact with the intake manifold or It is located so that it may approach.

  According to a second aspect of the present invention, in the first aspect of the present invention, the intake manifold is integrally provided with a projecting portion toward the cover main body, and the front end of the projecting portion of the cover main body is disposed at the front end of the projecting portion. It is arranged to face each other so as to abut or approach.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the metal reinforcing member is a pin-shaped reinforcing member.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the protruding portion has a bottomed shape having a protruding end surface, and the end portion of the reinforcing member in the protruding portion protruding direction is the above. It is covered with a protruding end surface.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein a flange portion is integrally formed at an outer end portion of the cover body of the reinforcing member, and an outer surface of the flange portion is formed by the cover body. The side surface and the inner surface are covered with a resin material constituting the cover body.

  According to the first aspect of the invention, since the metal reinforcing member is integrally accommodated in the resin protrusion integrally provided on the back surface of the cover body, the metal reinforcing member has a large area as in Patent Document 1. Compared to the case where a metal plate is used, the reinforcing member is small, and a lightweight protector cover can be obtained. Further, since the reinforcing member is integrally accommodated in the protruding portion, there are no assembly bolts that cause an increase in the number of parts, and therefore, a fastening operation is not required, and it can be assembled inexpensively and easily. It can be a protector cover.

  According to the invention which concerns on Claim 2, the protrusion amount of the protrusion part (reinforcing member) of a cover main body reduces by the part which the protrusion part is protrudingly provided by the intake manifold, and can achieve further weight reduction of a protector cover. . Further, since the protrusion of the cover body hits the highly rigid protrusion of the intake manifold when the vehicle collides, it is possible to reduce damage to the intake manifold.

  According to the invention which concerns on Claim 3, although the reinforcement member is pin shape and its shape is small, it can fully exhibit the protection function with respect to the impact at the time of a vehicle collision.

  According to the invention which concerns on Claim 4, since a soft resin material pushes an intake manifold at the time of a vehicle collision compared with a metal material, the impact at the time of a vehicle collision can be absorbed efficiently.

  According to the fifth aspect of the invention, since the flange portion pushes the projection portion at the time of the vehicle collision, the resin projection portion and the metal reinforcing member cooperate to push the intake manifold reliably, and the impact absorption effect at the time of the vehicle collision Can be ensured.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a state where a protector cover 1 according to an embodiment of the present invention is attached to the outside of two resin intake manifolds 3. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 3 is a perspective view showing a state before the protector cover 1 is attached to the outside of the intake manifold 3. 4 is an enlarged cross-sectional view showing a portion A of FIG.

  1-3, 5 is an injector as a fuel supply system component disposed outside the intake manifold 3, and 7 is a fuel pipe as a fuel supply system component disposed outside the intake manifold 3. One end of two brackets 9 are integrally fixed to the fuel pipe 7, and the other end of each bracket 9 is attached to a mounting portion 11 protruding from the intake manifold 3 with a bolt 13. It is horizontally disposed above the injector 5.

  Each intake manifold 3 is provided with a plurality of boss portions 15 having screw holes 15a integrally projecting, and the protector cover 1 is disposed outside the intake manifold 3 so as to cover the injector 5 and the fuel pipe 7. Thus, the bolts 17 are attached to the intake manifold 3 by screwing them into the screw holes 15a of the boss portions 15 described above.

The protector cover 1 includes a resin cover main body 19. On the back surface of the cover main body 19, a protrusion 21 having a hollow portion 21a that opens to the front surface side of the cover main body 19 is provided in the direction indicated by the arrow P1 in FIG. ) And the P2 direction (side surface) toward the intake manifold 3 side. These projections 21, as shown in FIG. 4 is a bottom shape with a the hollow portion 21a and the protruding end surface 21b, the pin-like made of a metal having a through-hole 23a in a circular cross section in the hollow portion 21a The reinforcing member 23 is inserted from the surface side of the cover body 19 by press-fitting and accommodated integrally, and the end of the reinforcing member 23 in the protruding direction of the protruding portion is spaced from the protruding end surface 21b with a slight gap C1. It is covered with the protruding end surface 21b. In addition, although it is preferable to form the protruding end surface 21b, the protruding portion 21 may not be formed. Further, the reinforcing member 23 may be solid with no through-holes 23a, or may have a hollow bottom shape in which either one of both ends in the longitudinal direction is closed. Or other shapes. Further, the outer peripheral surface of the reinforcing member 23 may be roughened by knurling so that the reinforcing member 23 is difficult to be removed from the hollow portion 21 a of the protruding portion 21. In addition, the gap C1 cannot be formed in place of press-fitting the reinforcing member 23 into the hollow portion 21a of the protruding portion 21. You may insert integrally.

  A flange portion 23b projecting outward is integrally formed on the outer end of the cover body 19 of the reinforcing member 23, and the outer surface of the flange portion 23b is exposed from the cover body 19 flush with the outer surface of the cover body 19. The side surface 23c and the inner surface 23d are covered with a resin material constituting the cover main body 19.

  On the other hand, each of the intake manifolds 3 is provided with a plurality of block-like protrusions 25 integrally projecting toward the cover body 19, and the tips of the protrusions 21 of the protector cover 1 are connected to the intake manifolds 3. The protrusion 25 is positioned so as to be close to the tip of the protrusion 25 with a small gap C2 therebetween. The tips of the protrusions 21 may be brought into contact with the tips of the protrusions 25 so that the gap C2 is not formed. When the vehicle collides from the front, the projection 21 on the front side of the cover body 19 pushes the front projection 25 of the intake manifold 3 from the direction of the arrow P1 in FIG. ing. At the time of a vehicle collision from the side, the side projection 21 pushes the side projection 25 of the intake manifold 3 from the direction of the arrow P2 in FIG. 1, and similarly absorbs the impact at the time of the collision.

  Thus, in this embodiment, since the pin-shaped metal reinforcing member 23 is integrally accommodated in each of the hollow portions 21a of the plurality of projecting portions 21 projecting from the back surface of the cover body 19, the patent literature Compared with the case where a metal plate having a large area such as 1 is assembled to the cover body, the reinforcing member 23 can be made smaller, and there is no need for an assembly bolt that increases the number of parts, and the fastening operation of the reinforcing member 23 is also possible. The protector cover 1 that is unnecessary, lightweight, inexpensive and can be easily assembled can be obtained. Furthermore, although the reinforcing member 23 has a pin shape and is small in shape, it can sufficiently exert a protection function against an impact at the time of a vehicle collision.

  Further, in this embodiment, since the protruding portion 25 is provided on the intake manifold 3, the protruding amount of the protruding portion 21 (reinforcing member 23) of the cover body 19 is reduced correspondingly, and the weight of the protector cover 1 is reduced. Can be further improved. Further, since the protrusion 21 of the cover body 19 hits the highly rigid protrusion 25 of the intake manifold 3 at the time of a vehicle collision, damage to the intake manifold 3 can be reduced.

  Furthermore, in this embodiment, since the protrusion 21 on the back surface of the cover body 19 has a bottom, the protruding end surface 21b of the protrusion 21 made of a soft resin material compared to the metal material and the metal reinforcing member 23 cooperate. Since the tip of the protruding portion 25 of the intake manifold 3 is pushed at the time of a vehicle collision, the impact at the time of the vehicle collision can be efficiently absorbed and the fuel supply system components such as the injector 5 and the fuel pipe 7 can be protected.

  In addition, in this embodiment, since the side surface and the inner surface of the flange portion 23b of the reinforcing member 23 are covered with the resin material constituting the cover main body 19, the flange portion 23b pushes the projection portion 21 when the vehicle collides, and the projection portion 21 reliably pushes the tip of the protruding portion 25 of the intake manifold 3 to ensure the impact absorption effect at the time of a vehicle collision.

  Furthermore, in this embodiment, since a slight gap C1 is provided between the end of the reinforcing member 23 on the protruding side of the protruding portion and the protruding end surface 21b of the protruding portion 21, the reinforcing member 23 is connected to the protruding portion 21. The resin soot generated when press-fitting into the hollow portion 21a is accommodated in the gap C1 so that the reinforcing member 23 can be press-fitted with high accuracy, and there is a manufacturing error between the reinforcing member 23 and the cover main body 19 (projecting portion 21). When this occurs, the flange 23b of the reinforcing member 23 does not protrude outside the cover body 19.

  In this embodiment, since the gap C2 is formed between the tip of the protrusion 21 of the cover body 19 and the tip of the protrusion 25 of the intake manifold 3, vibration (chattering noise) of the internal combustion engine is applied to the protector cover 1. It is possible to prevent transmission.

  In this embodiment, the intake manifold 3 is made of resin, but may be made of metal.

  The present invention is useful as a protector cover for protecting a fuel supply system component disposed outside an intake manifold in an internal combustion engine of a vehicle from an impact at the time of a vehicle collision.

It is a perspective view which shows the state which attached the protector cover to the intake manifold outer side. It is sectional drawing in the II-II line of FIG. It is a perspective view which shows the state before attaching a protector cover to an intake manifold outer side. It is sectional drawing which expands and shows the A section of FIG.

Explanation of symbols

1 Protector cover 3 Intake manifold 5 Injector (fuel supply system parts)
7 Fuel pipe (fuel supply system parts)
19 Cover body 21 Protruding part 21b Protruding end surface 23 Reinforcing member 23b Flange part 25 Protruding part

Claims (5)

A protector cover for an internal combustion engine disposed outside the intake manifold so as to cover at least a fuel supply system component disposed outside the intake manifold ;
A cover body is provided, and the cover body is made of resin. On the back surface of the cover body, a protrusion having a hollow portion opened on the surface side of the cover body is protruded integrally toward the intake manifold side. In the hollow portion, a metal reinforcing member inserted from the cover body surface side is integrally accommodated, and the tip of the protruding portion is positioned so as to contact or approach the intake manifold. A protector cover for an internal combustion engine. The protector cover for an internal combustion engine according to claim 1,
An internal combustion engine characterized in that a projection is integrally provided on the intake manifold so as to project toward the cover body, and is opposed to the tip of the projection so that the tip of the projection of the cover body contacts or approaches. Institution protector cover. The protector cover for an internal combustion engine according to claim 1 or 2,
A protector cover for an internal combustion engine, wherein the metal reinforcing member is a pin-shaped reinforcing member. The protector cover for an internal combustion engine according to any one of claims 1 to 3,
The protector cover for an internal combustion engine, wherein the protrusion has a bottomed shape having a protruding end surface, and an end of the reinforcing member in the protruding direction of the protrusion is covered with the protruding end surface. The protector cover for an internal combustion engine according to any one of claims 1 to 4,
A flange portion is integrally formed at the outer end of the cover body of the reinforcing member, the outer surface of the flange portion is exposed from the cover body, and the side surface and the inner surface thereof are covered with a resin material constituting the cover body. A protector cover for an internal combustion engine.

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