JP2018071457A - Engine cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To readily and properly route wiring in a space between a cylinder head and an engine cover.SOLUTION: An engine cover 20 for covering upward of a cylinder head of an engine 1 includes: a cover body 21 disposed on an outer side; and a sound insulation part 22 disposed on a side of the cylinder head of the cover body 21 to insulate sound. A cut-in part 23 (23A, 23B) formed with cut-in capable of storing wiring is provided on the side of the cylinder head of the sound insulation part 22.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an engine cover for covering an upper portion of an engine cylinder head, and more particularly to a wiring arrangement technique above the cylinder head.

  Conventionally, an engine provided in a vehicle is made of a resin above the cylinder head in order to protect each component disposed on the upper part of the cylinder head, prevent oil from splashing outside, or perform sound insulation. Some engine covers are provided.

  In the space between the cylinder head and the engine cover, wiring (for example, a wire harness) for electrical components such as a spark plug, an injector, and various valves is routed. The wiring is generally routed in a state where the outer periphery is protected by being accommodated in a corrugated tube.

  For example, in the vicinity of the cylinder head, a technique is known in which a ditch is provided in an insulator disposed between the intake manifold and the wire harness to be fixed (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 10-176543

  In order to suppress the size of the engine, the space between the cylinder head and the engine cover is limited, and it is not easy to route the wiring in this space. In particular, it is very difficult to accommodate the wiring in the corrugated tube. Moreover, if a corrugated tube is used, the number of parts will increase and parts cost and parts management cost will rise.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a technique capable of easily and appropriately arranging wiring in a space between a cylinder head and an engine cover.

  In order to achieve the above-described object, an engine cover according to an aspect of the present invention is an engine cover for covering an upper portion of an engine cylinder head, and includes a cover body disposed on the outside, and a cylinder head side of the cover body. The sound insulation portion is provided with a sound insulation portion for sound insulation, and on the cylinder head side of the sound insulation portion, a cut portion formed with a cut capable of accommodating the wiring is provided.

  In the engine cover, the sound insulation portion may be provided with a block attachment portion to which a block in which a predetermined circuit that can be connected to the wiring accommodated in the cut portion is formed can be attached at a position adjacent to the cut portion. Good.

  In the engine cover, the cut portion includes a first cut portion that extends in the first direction and a second cut portion that extends in the second direction intersecting the first direction, and the block attachment portion includes the first cut portion. You may form in the part which a notch part and a 2nd notch part cross | intersect.

  In the engine cover, the cut portion may include a first cut portion extending in the first direction and a second cut portion extending in the second direction intersecting the first direction.

  According to the present invention, wiring can be easily and appropriately arranged in the space between the cylinder head and the engine cover.

It is typical sectional drawing which shows a part of engine which concerns on one Embodiment of this invention. It is a perspective view of the engine cover concerning one embodiment of the present invention. It is a perspective view from the lower part side of the engine cover concerning one embodiment of the present invention. It is a perspective view from the lower side of the engine cover which concerns on the modification of this invention. It is the disassembled perspective view which expanded a part of engine cover concerning the modification of the present invention.

  Hereinafter, an engine cover according to an embodiment of the present invention will be described with reference to the accompanying drawings. The same parts are denoted by the same reference numerals, and their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

  FIG. 1 is a schematic cross-sectional view showing a part of an engine according to an embodiment of the present invention. FIG. 2 is a perspective view of an engine cover according to an embodiment of the present invention. FIG. 3 is a perspective view from the lower side of the engine cover according to the embodiment of the present invention.

  The engine 1 includes a cylinder head cover 10 that covers an upper portion of a cylinder head that is disposed on an upper portion of a cylinder block that accommodates a piston (not shown), and an engine cover 20 that is disposed so as to cover the top of the cylinder head cover 10. Between the cylinder head cover 10 and the engine cover 20, electrical components (not shown) necessary for the operation of the engine 1 (for example, spark plugs, injectors, valves, etc.) are arranged.

  The engine cover 20 is made of, for example, a resin member, and is formed on the uppermost part (outside) of the engine 1 and on the cylinder head cover 10 side of the cover body 21. And a sound insulation part 22 for sound insulation. In the present embodiment, the sound insulating portion 22 is formed and arranged in a shape that fills the space between the cover main body 21 and the cylinder head cover 10. The sound insulation part 22 is formed of a rubber-like member, for example, ethylene propylene diene rubber (EPDM).

  The sound insulation part 22 is provided with a cut part 23 in which a cut for accommodating a wire harness 30 which is an example of wiring is formed. In the present embodiment, the sound insulating portion 22 has a plurality of first cut portions 23A in which cuts extending in the longitudinal direction (first direction) of the engine cover 20 are formed as the cut portions 23 as shown in FIG. There are provided a plurality of second cut portions 23B formed with cuts extending in the short direction (second direction) perpendicular to the longitudinal direction.

  In the present embodiment, the wire harness 30 for transmitting electric power and signals to the electrical components arranged between the cylinder head cover 10 and the engine cover 20 is shown in FIG. 2 and FIG. A connector 31 for connecting to a wiring or the like (not shown) is disposed outside, and below the engine cover 20 is behind the cut portions of the first cut portion 23A and the second cut portion 23B as shown in FIG. It is pushed in, accommodated inside the sound insulation part 22, and routed so as to reach a predetermined position. The wire harness 30 housed inside the sound insulation part 22 is in a state in which the periphery is protected by the sound insulation part 22. For this reason, it is not necessary to accommodate the wire harness 30 in the corrugated tube.

  As described above, according to the engine cover 20 according to the present embodiment, the cut portion 23 formed with the cut that can accommodate the wire harness 30 is provided on the cylinder head side of the sound insulation portion 22. The harness 30 can be pushed into the cut-in portion 23 to be accommodated for easy wiring, and the periphery of the wire harness 30 can be appropriately protected without using a corrugated tube.

  Further, according to the engine cover 20 according to the present embodiment, since the plurality of first cut portions 23A and the second cut portions 23B are provided as the cut portions 23, the engine cover can be removed from a desired position outside the engine 1. The wire harness 30 can be easily routed up to a predetermined position immediately below 20. For this reason, the engine cover 20 having the same configuration can be used for various engines having different configurations.

  Next, a modified example of the engine cover 20 according to the embodiment will be described.

  FIG. 4 is a perspective view from the lower side of the engine cover according to the modification of the present invention. FIG. 5 is an exploded perspective view showing an enlarged part of an engine cover according to a modification of the present invention.

  A plurality of cut portions 25 are formed in the sound insulating portion 22 of the engine cover 20 according to the modification. As the cut portion 25, there are a plurality of first cut portions 25A extending in the longitudinal direction and a plurality of second cut portions 25B extending in the short direction. At a location where the first cut portion 25A and the second cut portion 25B intersect, a block mounting portion 26 to which a block 40 having a predetermined shape can be attached from the outside is formed. The block attachment portion 26 has, for example, a shape in which one surface of a hexahedron is opened, and a contact 26A connected to a wire harness arranged in the cut portion 25 is provided on the surface on the cut portion 25 side. ing. In FIG. 5, one contact is shown for convenience, but when the wire harness includes a plurality of wires, a plurality of contacts 26 </ b> A may be provided.

  The block 40 includes a circuit therein, and a contact point 40A connected to the contact point 26A of the block attachment portion 26 is provided on a side surface of the block attachment portion 26 that faces the surface on the cut portion 25 side. In addition, in FIG. 5, although one contact is shown for convenience, when it is necessary to connect with several wiring of a wire harness, multiple contact 40A may be sufficient. In the present embodiment, the block 40 is, for example, a hexahedron. The circuit in the block 40 may include wiring for making a desired connection relationship for a plurality of wire harnesses routed to a plurality of surrounding cut portions 25, an IC for performing a predetermined process, and the like. Good. In addition, you may make it connect the wiring and connector for connecting the circuit inside the block 40, and the electrical component of the engine 1 to the lower surface of the block 40. FIG.

  As described above, in the engine cover 20 according to the present modification, the block attachment portion 26 is provided at a location where the first cut portion 25A and the second cut portion 25B intersect with each other. In addition to the effect, by making the circuit of the block 40 attached to the block attachment portion 26 a desired circuit, wiring suitable for an arbitrary engine can be easily formed (wired).

  Note that the present invention is not limited to the above-described embodiments and modifications, and can be appropriately modified and implemented without departing from the spirit of the present invention.

  For example, in the above-described embodiment, the sound insulating portion 22 includes the plurality of first cut portions 23A and the second cut portions 23B. However, the present invention is not limited to this, and the electric component of the engine 1 to be used is provided. A cut portion may be provided only in a portion serving as the path.

  Moreover, in the said modification, although the block attaching part 26 was provided in the location where the 1st notch part 25A and the 2nd notch part 25B cross | intersect, this invention is not limited to this, 1st notch part 25A or You may make it provide the block attaching part 26 in the position adjacent to only one side of the 2nd notch part 25B.

  Moreover, in the said modification, although the block attaching part 26 was provided in all the locations where the 1st notch part 25A and the 2nd notch part 25B cross | intersect, this invention is not limited to this, The 1st notch part You may make it provide a block attaching part only in a part of location which 25A and the 2nd notch part 25B cross | intersect.

  In the above modification, the block 40 is mounted from the lower side (cylinder head side) to the block mounting portion 26, but the present invention is not limited to this, and the block mounting portion is mounted from the upper side. May be formed.

DESCRIPTION OF SYMBOLS 1 Engine 10 Cylinder head cover 20 Engine cover 21 Cover main body 22 Sound insulation part 23 Notch part 23A 1st notch part 23B 2nd notch part 25 Notch part 25A 1st notch part 25B 2nd notch part 26 Block attachment part 26A Contact 30 Wire harness 31 Connector 40 Block 40A Contact

Claims (4)

An engine cover for covering the upper part of the cylinder head of the engine,
A cover body arranged on the outside;
A sound insulation part disposed on the cylinder head side of the cover body for sound insulation;
An engine cover provided with a notch formed with a notch capable of accommodating wiring on the cylinder head side of the sound insulating part. The sound insulation portion is formed with a block attachment portion to which a block in which a predetermined circuit that can be connected to the wiring accommodated in the cut portion is formed can be attached at a position adjacent to the cut portion. Engine cover as described in The notch is
A first cut portion extending in a first direction;
A second cut portion extending in a second direction intersecting the first direction,
The engine cover according to claim 2, wherein the block attachment portion is formed at a portion where the first cut portion and the second cut portion intersect. The notch is
A first cut portion extending in a first direction;
The engine cover according to claim 1, further comprising: a second cut portion extending in a second direction intersecting the first direction.

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