Accessory mounting structure for internal combustion engine

Abstract

To provide an auxiliary machine mounting structure of an internal combustion engine capable of protecting a terminal part from a floor panel at the time of vehicle collision while improving workability of connection work of a harness to the terminal part.SOLUTION: The auxiliary machine mounting structure for the engine 1 includes an engine 2 having an engine body 2 disposed below a floor panel 10 so that a cylinder shaft 1C is inclined with respect to a vertical axis L, and an alternator 2, wherein the alternator 2 includes an alternator body 2 a disposed on an upper inclined surface 3a side of a cylinder block 3 and disposed opposite to the floor panel 10 in a vertical direction, and a terminal portion 2 b disposed on an upper portion of the alternator body 2 a and connected to a harness 2. The terminal-part 22B is attached to the alternator-body 22E via a rotating member 22A rotatable around a rotating shaft H, and the rotating member 22E is fixed to the alternator-body 22A at a first stopping position and a second stopping position so as not to be rotatable.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an accessory mounting structure for an internal combustion engine. [Background technology]

[0002] BACKGROUND ART A water pump mounting structure for a vehicle having an internal combustion engine equipped with accessories such as a water pump and an alternator is known (see Patent Document 1).

[0003] In the water pump mounting structure for a vehicle described in Patent Document 1, the internal combustion engine is disposed in a tilted state on the vehicle. The alternator is disposed above the tilted cylinder block, and a terminal portion to which a harness is connected is provided on the top of the alternator.

[0004] That is, the alternator is disposed above the inclined cylinder block in order to facilitate the work of connecting a harness to the terminal portion. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 8-319829 Summary of the Invention [Problem to be solved by the invention]

[0006] The internal combustion engine is disposed in an engine compartment below the floor panel, and in this case, the alternator faces the floor panel in the vertical direction.

[0007] As a result, if the alternator is placed vertically close to the floor panel in order to shorten the vehicle's height dimension, the gap between the terminal part and the floor panel becomes small, and if the floor panel deforms downward during a vehicle collision, there is a risk that the alternator's terminal part will come into contact with the floor panel, so there is still room for improvement.

[0008] The present invention has been made in light of the above-mentioned circumstances, and aims to provide an accessory mounting structure for an internal combustion engine that can improve the workability of connecting a harness to a terminal portion while protecting the terminal portion from the floor panel in the event of a vehicle collision. [Means for solving the problem]

[0009] The present invention is an accessory mounting structure for an internal combustion engine having an engine body arranged below a floor panel with its cylinder axis inclined relative to a vertical axis, and an accessory to which power is transmitted from the crankshaft of the engine body, wherein the accessory is arranged on the upper inclined surface side of the engine body and has an accessory body arranged vertically facing the floor panel, and a terminal portion arranged on top of the accessory body to which a harness is connected, the terminal portion being attached to the accessory body via a rotating member that can rotate around a rotating axis, and the rotating member being fixed so as not to be rotatable relative to the accessory body at a plurality of stop positions. [Effects of the Invention]

[0010] As described above, according to the present invention, the workability of connecting the harness to the terminal portion can be improved, and the terminal portion can be protected from the floor panel in the event of a vehicle collision. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a front view of an engine equipped with an accessory mounting structure for an internal combustion engine according to one embodiment of the present invention. [Figure 2] FIG. 2 is a perspective view of an alternator in an auxiliary equipment mounting structure for an internal combustion engine according to one embodiment of the present invention, showing a state in which terminal portions are oriented vertically. [Figure 3] FIG. 3 is a perspective view of an alternator in an auxiliary equipment mounting structure for an internal combustion engine according to one embodiment of the present invention, showing a state in which terminal portions are oriented horizontally. DETAILED DESCRIPTION OF THE INVENTION

[0012] An accessory mounting structure for an internal combustion engine in one embodiment of the present invention is an accessory mounting structure for an internal combustion engine having an engine body arranged below a floor panel with the cylinder axis inclined relative to the vertical axis, and an accessory to which power is transmitted from the crankshaft of the engine body, wherein the accessory is arranged on the upper inclined surface side of the engine body and has an accessory body arranged vertically facing the floor panel, and a terminal portion arranged on top of the accessory body to which a harness is connected, the terminal portion being attached to the accessory body via a rotating member that is rotatable around a rotating axis, and the rotating member being fixed so as not to be rotatable relative to the accessory body at a plurality of stop positions.

[0013] As a result, the accessory mounting structure for an internal combustion engine according to one embodiment of the present invention can improve the workability of connecting the harness to the terminal portion, while protecting the terminal portion from the floor panel in the event of a vehicle collision. [Example]

[0014] An auxiliary equipment mounting structure for an internal combustion engine according to one embodiment of the present invention will now be described with reference to the drawings. 1 to 3 are diagrams showing an accessory mounting structure for an internal combustion engine according to one embodiment of the present invention.

[0015] In Figures 1 to 3, the up / down, front / rear, left / right directions are based on the internal combustion engine when installed in a vehicle, and the front / rear direction of the vehicle is the front-rear direction, the left / right direction of the vehicle (vehicle width direction) is the left / right direction, and the vertical direction of the vehicle (height direction) is the up / down direction.

[0016] First, the configuration will be described. In Fig. 1, engine 1 is disposed below floor panel 10 and includes engine body 2. Engine body 2 includes cylinder block 3, cylinder head 4, cylinder head cover 5, and oil pan 6. Engine 1 of this embodiment constitutes an internal combustion engine. Note that Fig. 1 shows a state in which a chain cover 8 is attached to the rear end of cylinder block 3 and cylinder head 4.

[0017] The cylinder block 3 is provided with a plurality of cylinders (not shown), which are arranged in a row in the front-to-rear direction of the engine 1. The engine 1 is arranged so that the central axis of the cylinder (hereinafter referred to as the cylinder axis 1C) is inclined with respect to the vertical axis L. In other words, the engine 1 is arranged so as to be inclined obliquely with respect to the ground.

[0018] Each cylinder houses a piston (not shown), and the pistons are connected to the crankshaft 7 via a connecting rod (not shown). The crankshaft 7 has a central axis of rotation that extends in the front-to-rear direction and rotates around the central axis of rotation.

[0019] The pistons reciprocate within the cylinders, thereby rotating the crankshaft 7 via connecting rods. A plurality of intake ports and a plurality of exhaust ports (not shown) are formed in the cylinder head 4.

[0020] The intake ports are connected to the cylinders, respectively, and introduce intake air into the cylinders. The exhaust manifold is connected to multiple cylinders through exhaust ports, and collects exhaust gases discharged from the multiple cylinders and discharges them from an exhaust port to a catalytic converter (not shown).

[0021] An intake manifold 11 is connected to the intake surface (right side surface) of the cylinder head 4. The intake manifold 11 is connected to an air cleaner 13 via an intake pipe 12. The air cleaner 13 purifies the air taken in from an intake duct (not shown) and sends it to the intake manifold 11 through the intake pipe 12. The intake manifold 11 distributes the intake air introduced from the intake pipe 12 to each cylinder.

[0022] A water pump 21 and an alternator 22 are disposed on the front wall 3A of the cylinder block 3. The water pump 21 is fastened to the chain cover 8 with a plurality of bolts 15A. The water pump 21 is provided with a water pump pulley 21A, and a belt 23 is wound around the water pump pulley 21A.

[0023] A crank pulley 7A is attached to the front end of the crankshaft 7, and a belt 23 is wound around the crank pulley 7A.

[0024] The alternator 22 is located above the water pump 21 and the crank pulley 7A, and includes an alternator body 22A that incorporates a rotor, a stator, and the like (not shown).

[0025] The alternator body 22A is disposed on the upper inclined surface 3a side of the cylinder block 3, and faces the floor panel 10 in the vertical direction. The inclined surface 3a in this embodiment forms the upper inclined surface of the engine body.

[0026] 2, bosses 22a and 22b are formed on alternator body 22A, and as shown in Fig. 1, bosses 22a and 22b are fastened to brackets 31A and 31B of cylinder block 3 by bolts 15B and 15C. In this embodiment, alternator 22 constitutes an auxiliary machine, and alternator body 22A constitutes an auxiliary machine.

[0027] The alternator main body 22A is provided with an alternator pulley 22C, and a belt 23 is wound around the alternator pulley 22C.

[0028] That is, the belt 23 is wound around the crank pulley 7A, the water pump pulley 21A, and the alternator pulley 22C, and the power of the crank pulley 7A is transmitted to the water pump pulley 21A and the alternator pulley 22C via the belt 23.

[0029] An idler pulley 25 is disposed on the front wall 3A side of the cylinder block 3, and the belt 23 is wound around the idler pulley 25. The idler pulley 25 applies tension to the belt 23 to prevent the belt 23 from bending.

[0030] A rod-shaped terminal portion 22B is provided on the upper portion of the alternator body 22A, and a harness 24 (see FIGS. 2 and 3) is electrically connected to the terminal portion 22B. The harness 24 is connected to a battery (not shown), and the battery is charged with the power generated by the alternator 22.

[0031] A bulging portion 22D is provided on the upper portion of alternator body 22A, and bulging portion 22D bulges upward from alternator body 22A. A rotating member 22E is rotatably provided on bulging portion 22D, and rotating member 22E is electrically connected to the stator and terminal portion 22B.

[0032] The rotating member 22E is provided to be rotatable about a rotation axis H (see FIGS. 2 and 3) that extends horizontally in the front-rear direction, and the terminal portion 22B is detachably attached to the rotating member 22E by a bolt (not shown).

[0033] The rotating member 22E is provided so as to be rotatable between a first stop position and a second stop position. The first stop position is a rotation position where the terminal portion 22B protrudes upward from the upper end portion 22d of the bulging portion 22D and extends in the vertical direction (up-down direction), and the upper end of the terminal portion 22B is located directly below the floor panel 10.

[0034] The second stop position is a rotation position where the terminal portion 22B is located below the upper end portion 22d of the bulging portion 22D, extends in a horizontal direction perpendicular to the rotation axis H, and the tip of the terminal portion 22B faces the air cleaner 13. In this embodiment, the upper end portion 22d constitutes the upper end portion of the accessory.

[0035] The first and second stop positions may be any structure that fixes rotating member 22E to bulging portion 22D so that it cannot rotate. For example, rotating member 22E may be provided with a protrusion, and bulging portion 22D may be provided with a fitting portion that fits with the protrusion at the first and second fixing positions.

[0036] The first stop position is not limited to the position where terminal portion 22B faces the vertical direction, but may be a rotation position where terminal portion 22B is tilted relative to vertical axis L. The second stop position is not limited to the position where terminal portion 22B faces the horizontal direction perpendicular to rotation axis H, but may be a rotation position where terminal portion 22B is tilted relative to the horizontal direction perpendicular to rotation axis H.

[0037] In this way, the rotating member 22E is fixed to the alternator main body 22A so as not to be able to rotate at a plurality of stop positions.

[0038] An upper end 22d of the bulging portion 22D is located at a position lower than an upper end 13a of the air cleaner 13, and the terminal portion 22B is fixed so as not to be able to rotate below the upper end 22d of the bulging portion 22D when the terminal portion 22B is located at the second stop position. In other words, the terminal portion 22B is fixed so as not to be able to rotate in a state facing horizontally.

[0039] The overall length of terminal portion 22B is formed to be shorter than the width of alternator body 22A. This prevents terminal portion 22B from protruding outward from the outer periphery of alternator body 22A when terminal portion 22B is oriented in a horizontal direction perpendicular to rotation axis H, thereby preventing terminal portion 22B from interfering with peripheral members of engine 1.

[0040] Next, the effects of the accessory mounting structure for the engine 1 according to this embodiment will be described. The accessory mounting structure for the engine 1 of this embodiment comprises an engine 1 having an engine body 2 arranged below the floor panel 10 with the cylinder axis 1C inclined relative to the vertical axis L, and an alternator 22 to which power is transmitted from the crankshaft 7 of the cylinder block 3.

[0041] The alternator 22 is arranged on the upper inclined surface 3a side of the cylinder block 3 and has an alternator main body 22A arranged vertically facing the floor panel 10, and a terminal portion 22B arranged on top of the alternator main body 22A and to which the harness 24 is connected.

[0042] The terminal portion 22B is attached to the alternator body 22A via a rotating member 22E that is rotatable around a rotation axis H, and the rotating member 22E is fixed to a first stop position and a second stop position relative to the alternator body 22A so as not to be rotatable.

[0043] This allows the worker to easily access the terminal portion 22B by rotating the terminal portion 22B to the first stop position using the rotating member 22E, causing the terminal portion 22B to protrude upward from the upper end portion 22d of the bulge portion 22D and face vertically.

[0044] Therefore, the worker can easily connect the harness 24 to the terminal portion 22B, and the workability of the work of connecting the harness 24 can be improved.

[0045] In addition, after connecting the harness 24 to the terminal portion 22B, the terminal portion 22B can be rotated to a second stop position by the rotating member 22E, so that the terminal portion 22B is oriented in a horizontal direction perpendicular to the rotation axis H, thereby increasing the gap between the floor panel 10 and the terminal portion 22B.

[0046] Therefore, in the event of a vehicle collision, floor panel 10 is less likely to come into contact with terminal portion 22B and rotating member 22E, and terminal portion 22B and rotating member 22E can be protected from floor panel 10.

[0047] In addition, since the rotating member 22E can be fixed at the first stop position and the second stop position, when the rotating member 22E is fixed at the second stop position, it is possible to prevent the terminal portion 22B from rotating unintentionally due to vibrations while the vehicle is running.

[0048] Furthermore, according to the accessory mounting structure for engine 1 of this embodiment, engine 1 has air cleaner 13. Upper end 22d of bulging portion 22D is located at a position lower than upper end 13a of air cleaner 13, and terminal portion 22B is fixed so as not to be able to rotate below upper end 22d of bulging portion 22D when in the second stop position.

[0049] As a result, when floor panel 10 is deformed downward during a vehicle collision, floor panel 10 can be caused to collide with air cleaner 13 before colliding with bulging portion 22D.

[0050] Therefore, the impact when floor panel 10 is deformed downward can be absorbed by air cleaner 13, and the impact on rotating member 22E and terminal portion 22B can be reduced. Therefore, terminal portion 22B and rotating member 22E can be protected from floor panel 10 more effectively.

[0051] Furthermore, according to the accessory mounting structure for the engine 1 of this embodiment, the terminal portion 22B is detachably attached to the rotating member 22E by a bolt.

[0052] As a result, if a problem occurs with terminal portion 22B, it can be resolved by removing the bolt to detach terminal portion 22B from alternator 22, and then replacing only terminal portion 22B with respect to alternator main body 22A. As a result, the workability of maintenance work on alternator 22 and the work of replacing terminal portion 22B can be improved.

[0053] The auxiliary machine is not limited to the alternator 22, but may be an ISG (Integrated Starter Generator) or the like.

[0054] While an embodiment of the present invention has been disclosed, it will be apparent to one skilled in the art that modifications may be made thereto without departing from the scope of the present invention, and it is intended that all such modifications and equivalents be included in the following claims. [Explanation of symbols]

[0055] 1. Engine (internal combustion engine) 1C Cylinder shaft 2 Engine body 3a Inclined surface (upper inclined surface of engine body) 10 Floor Panel 13 Air cleaner 13a Upper end (upper end of air cleaner) 22 Alternator (auxiliary) 22A alternator body (auxiliary body) 22B Terminal section 22d Upper end (upper end of auxiliary machinery) 22E Rotating member H Rotating shaft L Vertical axis

Claims

1. an internal combustion engine having an engine body disposed below a floor panel with a cylinder axis inclined relative to a vertical axis; an accessory mounting structure for an internal combustion engine having an accessory to which power is transmitted from a crankshaft of the engine body, the accessory is disposed on an upper inclined surface side of the engine body and is disposed facing the floor panel in the vertical direction; a terminal portion disposed on an upper portion of the auxiliary main body and to which a harness is connected; the terminal portion is attached to the auxiliary main body via a rotating member that is rotatable around a rotation axis, 10. An accessory mounting structure for an internal combustion engine, wherein the rotating member is fixed to the accessory body so as not to be rotatable at a plurality of stop positions.

2. the internal combustion engine has an air cleaner, An upper end of the accessory is located at a position lower than an upper end of the air cleaner, 2. The accessory mounting structure for an internal combustion engine according to claim 1, wherein the terminal portion can be fixed so as not to be rotatable at a stop position lower than an upper end of the accessory among the plurality of stop positions.

3. 3. The accessory mounting structure for an internal combustion engine according to claim 1, wherein the terminal portion is detachably provided on the rotating member.

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