JP5764437B2 - Engine wiring harness wiring structure - Google Patents

Description

  The present invention relates to an engine wire harness wiring structure, and more particularly to an engine wire harness wiring structure capable of suppressing damage to the wire harness.

2. Description of the Related Art Conventionally, there is an engine wire harness wiring structure in which a wire harness is placed along an engine machine wall. (For example, refer to Patent Document 1).
However, this prior art has a problem because the wire harness is positioned via the clamp.

JP 2001-318343 A (see FIG. 1)

<Problem> The wire harness is easily damaged Since the wire harness is positioned via the clamp, the wire harness is easily damaged by the strong restraint force of the clamp.

  The subject of this invention is providing the wire harness wiring structure of the engine which can suppress damage to a wire harness.

Invention specific matters of the invention according to claim 1 are as follows.
As illustrated in FIGS. 1 (A) and 1 (B), in an engine wire harness routing structure in which a wire harness (2) is placed along an engine machine wall (1),
As illustrated in FIGS. 1A and 1B, a wire harness protection plate (3) is attached to the engine machine wall (1), and a wire is provided between the engine machine wall (1) and the wire harness protection plate (3). The harness (2) is inserted, and a wire harness contact rod (4) is installed between the engine machine wall (1) and the wire harness protection plate (3), and a wire is connected to the wire harness contact rod (4). Connect the harness (2),
As illustrated in FIGS. 1A and 1B, the wire harness contact rod (4) protrudes from the engine machine wall (1), and the protruding end (5) of the wire harness contact rod (4) is a wire. Insert it into the contact hole insertion hole (6) opened in the harness protection plate (3) ,
With the protruding direction of the wire harness contact rod (4) as the rear, as shown in FIG. 1 (A), the bent portion that is convex toward the side of the wire harness (2) when viewed from the rear. (2a) is provided, the curved portion (2a) is covered with a wire harness protection plate (3) from the rear, and when viewed from the rear, the curved portion (2a) is attached to the wire harness contact rod (4 ) Drowning from above,
As illustrated in FIG. 1B, the curved portion (2a) of the wire harness (2) is sandwiched between the engine machine wall (1) and the wire harness protection plate (3). Engine wiring harness routing structure.

(Invention of Claim 1)
The invention according to claim 1 has the following effects.
<< Effect >> Damage to the wire harness can be suppressed.
As illustrated in FIGS. 1A and 1B, a wire harness protection plate (3) is attached to the engine machine wall (1), and a wire is provided between the engine machine wall (1) and the wire harness protection plate (3). The harness (2) is inserted, and a wire harness contact rod (4) is installed between the engine machine wall (1) and the wire harness protection plate (3), and a wire is connected to the wire harness contact rod (4). Since the harness (2) is contacted, the wire harness (2) is positioned between the engine machine wall (1) and the wire harness protection plate (3) by the wire harness contact rod (4), and the wire harness ( The strong restraint force such as a clamp is not applied to 2), and damage to the wire harness (2) can be suppressed.

<< Effect >> Damage to the wire harness can be suppressed.
As illustrated in FIGS. 1A and 1B, the wire harness contact rod (4) protrudes from the engine machine wall (1), and the protruding end (5) of the wire harness contact rod (4) is a wire. Since it was inserted into the contact hole insertion hole (6) drilled in the harness protection plate (3), the wire harness contact hole was accidentally installed during the installation of the wire harness protection plate (3) to the engine machine wall (1) . Even if there is a problem that the wire harness (2) is sandwiched between the protruding end portion (5) of (4) and the wire harness protection plate (3), the wire harness (2) remains in the contact fitting insertion hole (6). It can be visually observed through the contact fitting insertion hole (6), and the installation operator of the wire harness protection plate (3) is noticed. Thereby, the opportunity by which the malfunction of the said pinching is eliminated by an installation operator is obtained, and damage to the wire harness (2) resulting from this malfunction can be suppressed.

<Effect> The position of the wire harness is stabilized.
As illustrated in FIGS. 1 (A) and 1 (B), the wire harness (2) is wound on the wire harness contact rod (4), so the wire harness (2) is pressed against the wire harness contact rod (4). Thus, the position of the wire harness (2) is stabilized.

<Effect> Support of the wire harness is stabilized.
As illustrated in FIGS. 1A and 1B, since the wire harness (2) is sandwiched between the engine machine wall (1) and the wire harness protection plate (3), the wire harness (2) is supported. Is stabilized.

1A and 1B are diagrams illustrating an engine according to an embodiment of the present invention, in which FIG. 1A is a main part rear view, and FIG. 1B is a cross-sectional view taken along line BB in FIG. The rear view of the engine of FIG. It is a vertical side view of the engine of FIG.

  1-3 is a figure explaining the wire harness wiring structure of the engine which concerns on embodiment of this invention, In this embodiment, it is about the vertical water-cooled inline 2-cylinder gasoline engine provided with the wire harness wiring structure. explain.

The outline of the engine is as follows.
2 and 3, the cylinder head (23) is assembled to the upper part of the cylinder block (22), the head cover (24) is assembled to the upper part of the cylinder head (23), and the front part of the cylinder block (22) is assembled. The timing transmission case (25) is assembled, the engine cooling fan (26) is arranged in front of the timing transmission case (25), the oil pan (27) is assembled at the lower part of the cylinder block (22), and the cylinder block (22 ) Is disposed behind the flywheel (8).
A crankshaft (28) is installed and accommodated in the cylinder block (22). The crankshaft (28) drives the winding timing transmission belt (29) in the timing transmission case (25), and Drive the flywheel (8).

  As shown in FIG. 3, a bearing case (30) is attached to the rear end wall (22a) of the cylinder block (22), and the rear end of the crankshaft (28) is supported by a bearing (31) supported by the bearing case (30). The journal part (32) is supported. An oil seal (39) is disposed behind the bearing (31). A charging coil (34) is attached to a projecting portion (33) protruding rearward from the bearing case (30), and the charging coil (34) is accommodated in the flywheel (8), and the inner periphery of the flywheel (8). When the magnetic body (35) arranged in the passage passes around the charging coil (34), the charging coil (34) generates electric power. The wire harness (1) is derived from the charging coil (34), and the charging coil (34) is connected to the battery (not shown) via the rectifier circuit (not shown) via the wire harness (1). .

As shown in FIGS. 1 (A) and 1 (B), a wire harness routing structure in which a wire harness (2) is placed along an engine machine wall (1) is provided.
As shown in FIGS. 1 (A) and 1 (B), a wire harness protection plate (3) is attached to the engine machine wall (1), and the wire harness is placed between the engine machine wall (1) and the wire harness protection plate (3). (2) is inserted, and a wire harness contact rod (4) is installed between the engine machine wall (1) and the wire harness protection plate (3), and the wire harness is connected to the wire harness contact rod (4). (2) is in contact.

As shown in FIGS. 1A and 1B, the wire harness contact rod (4) protrudes from the engine machine wall (1), and the protruding end portion (5) of the wire harness contact rod (4) is the wire harness. It is made to fit in the contact hole insertion hole (6) opened in the protective plate (3).
The wire harness (2) is wound on the wire harness contact rod (4).
The wire harness (2) is sandwiched between the engine machine wall (1) and the wire harness protection plate (3).

  As shown in FIG. 3, the engine machine wall (1) to which the wire harness protection plate (3) is attached is an end plate (9) attached along the rear end wall (22a) of the cylinder block (22). The end plate (9) covers the flywheel (8) from the front side and serves as a mounting portion for a starter motor (not shown). The end plate (9) is integrally formed with a bearing case (30) at the center thereof. The engine machine wall (1) to which the wire harness protection plate (3) is attached may be the rear end wall (22a) of the cylinder block (22).

The left and right ends of the wire harness protection plate (3) are attached to the engine machine wall (1) with mounting bolts (10) and (10), and the central part in the left and right direction is bent in a rearward projecting manner. A gap (12) is provided between the recess (11) on the rear side and the wire harness protection plate (3), and the wire harness (2) is inserted through the gap (12). A wire harness contact rod (4) is installed in the gap (12). The wire harness contact rod (4) protrudes backward from the engine machine wall (1). In the wire harness (2), the wire harness contact rod (4) is bent from the upper side, and a part of the load is supported on the wire harness contact rod (4).
In this embodiment, the protruding direction of the wire harness contact rod (4) is the rear, and as shown in FIG. 1 (A), when viewed from the rear, the wire harness (2) is convex toward one side. The bending portion (2a) is provided, and the bending portion (2a) is covered with the wire harness protection plate (3) from the rear, and the bending portion (2a) is connected to the wire harness on the inner peripheral side when viewed from the rear. As shown in FIG. 1B, the bent portion (2a) of the wire harness (2) is interposed between the engine machine wall (1) and the wire harness protection plate (3). ).

(1) Engine wall
(2) Wire harness
(3) Wire harness protection plate
(4) Wire harness contact
(5) Protruding end of wire harness contact rod
(6) Contact fitting insertion hole

Claims (1)

In the engine wiring harness wiring structure with the wiring harness (2) along the engine machine wall (1),
The wire harness protection plate (3) is attached to the engine machine wall (1), the wire harness (2) is inserted between the engine machine wall (1) and the wire harness protection plate (3), and the engine machine wall (1 ) And the wire harness protection plate (3), the wire harness contact rod (4) is installed, and the wire harness (2) is contacted to the wire harness contact rod (4).
The wire harness contact rod (4) protrudes from the engine machine wall (1), and the protruding end portion (5) of the wire harness contact rod (4) is formed in the wire harness protection plate (3). is fitted to (6),
The wire harness contact rod (4) is provided with a curved portion (2a) that is convex toward one lateral side when viewed from the rear, with the protruding direction of the wire harness contact rod (4) as the rear, and this curved portion (2a ) Is covered with a wire harness protection plate (3) from the rear, and when viewed from the rear, the curved portion (2a) is dripped from the upper side to the wire harness contact rod (4) on the inner periphery side ,
A wire harness wiring structure for an engine, characterized in that a curved portion (2a) of a wire harness (2 ) is sandwiched between an engine machine wall (1) and a wire harness protection plate (3).

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