JP4605777B2 - Cabin structure - Google Patents

Description

  The present invention relates to a cabin structure of a cabin having an intake air intake on the cabin side in an automobile in which the cabin is tilted up for maintenance.

In many large trucks, as shown in FIG. 8, an intake air intake (air inlet) Ai is installed above the rear portion of the cabin C, and the air sucked from the air inlet Ai is taken into the intake system ducts D1, H, The air cleaner Ac installed in the chassis frame F is sucked by D2.
In FIG. 8, symbol E indicates the engine, and symbol T indicates a tilt hinge for the cab tilt.

As shown in FIG. 9, the medium-sized or larger truck has a structure in which the cabin C can be lifted up around a tilt hinge T formed at the front lower part of the cabin C for maintenance of the engine E, so-called “tilt up”. It has become.

When the cabin C is tilted up, the air inlet Ai moves away from the air cleaner Ac on the chassis frame F side. For this purpose, the air duct is divided into two systems, a cabin side D1 and a vehicle frame side D2, and is connected to the duct D2 on the chassis frame F side by a bellows hose H of an elastic member fixed to the duct D1 on the cabin side.

By the way, recent automobiles capable of tilting up cabins tend to increase the tilt-up angle in consideration of maintainability, but if the tilt-up angle becomes much larger than before, for example, a long time such as engine replacement. The bellows hose H, which is an elastic member, hangs down vertically in the tilt-up state (for one week), and the “hanging” of the sagging state is attached. (In FIG. 9, symbol δ indicates the amount of deviation). As for the deformation of the bellows hose due to this “fouling”, the lower end of the bellows hose (near the contact position with the lower duct) is most easily deformed.
When tilting down in such a state of “fuzz”, the bellows hose H is displaced to the front side of the vehicle, and there is a possibility that the bellows hose H and the chassis side duct D2 do not fit well.

  Here, regarding the air intake duct device of the cab-over type vehicle, the sealing performance between the upper duct attached to the cabin side and the lower duct attached to the vehicle frame side is ensured, and a correction process such as an intake system for each vehicle is not required during vehicle assembly. An apparatus has been proposed (see Patent Document 1).

However, the device (Patent Document 1) easily adjusts an error at the time of assembling for each vehicle, prevents the bellows hose from becoming garbled after the vehicle is assembled, and makes the bellows hose and the chassis side duct well. It does not consider fitting.
Japanese Utility Model Publication No. 4-108422

  Accordingly, an object of the present invention is to attach the cabin to the cab back panel side even if the cabin is left tilted up for a long time in a medium or larger truck where the cabin can be tilted up for maintenance. The so-called “bellows hose” of the elastic member for connecting the intake duct provides a cabin structure that does not deform due to the gravity of the “bellows hose” itself.

The inventor conceived of providing a “support” that supports the bellows hose during tilt-up and prevents it from sagging.
Here, as the support member (90),
1. If it contacts the bellows hose (9) during normal driving, it may be rubbed and damaged. At the time of tilt-up, a trade-off property is required that the bellows hose (9) must be in reliable contact with it to prevent drooping.

Further, the inventor paid attention to the tilt lock release lever (50) as satisfying the above requirement. That is, the tilt lock release lever (50) uses the characteristic that the tilt up cannot be performed unless the lock is released with the tilt lock release lever (50) during the tilt up.
Specifically, the tilt lock release lever (50) is reliably moved (withdrawn) at the time of tilt up, but in a normal state after being tilted down, the tilt lock release lever (50) The fact that it is surely returned to the position is used.

  According to the present invention, the cabin side duct (8), the bellows hose (9) connected to the cabin side duct (8) and communicating with the chassis side duct (60), and the cabin (3) are tilted up. A bellows hose (9) that supports the bellows hose (9) so as not to hang downward in the vertical direction, and a support member (90) that is arranged so as not to interfere with the bellows hose (9) in a normal state after the tilt-down, The support member (90) is attached to the tilt lock release lever (50). When the cabin (3) is tilted up, the support member (90) comes into contact with the bellows hose (9) and supports it. In the state, it arrange | positions so that it may space apart from a bellows hose (9) (FIGS. 3-5).

The edge of the support member (90) is chamfered (FIGS. 6 and 7).

  Or the said support member (90) is coat | covered with the material which has the hardness below a bellows hose (9).

  The support member (90) is disposed so as to support the vicinity of the end portion of the bellows hose (9) not connected to the cabin side duct (8) when the cabin (3) is tilted up. (FIGS. 4 and 5).

  According to the present invention having the above-described structure, the bellows hose 9 is supported by the support member (90) provided on the tilt lock release lever (50) so as not to be deformed only at the time of tilt-up. Even if the bellows hose (9) is left tilted up, the bellows hose (9) is not deformed by the gravity of the bellows hose (9) itself.

  The support member (90) may be fixed to the tilt lock release lever (50), and there is no fear of an increase in weight or cost.

   The bellows hose (9) is automatically supported by the support member (90) only by performing a tilt lock operation.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a normal state of a tilt type cabin according to an embodiment of the present invention, and FIG. 2 shows a state where the cabin is tilted up for engine maintenance, for example.

  In FIG. 1, a pair of tilt hinge brackets 2 are attached to the front end of the chassis frame 1 on the left and right, and a lower portion of the front end of a cabin 3 is rotatably supported by the pair of tilt hinges 2.

  A torii type cabriot mount bracket 4 as viewed from the rear of the vehicle is attached to both left and right side surfaces of the chassis frame 1 by known fastening means (bolts and nuts).

In the illustrated example of the chassis frame 1, an air cleaner mounting bracket 5 is provided in front of the cab mount rear bracket 4 on the left side rail.
An air cleaner 6 such as an intake system is supported via an air cleaner support member 7 so as to straddle the cab mount rear bracket 4 and the air cleaner bracket 5.

  An air duct (chassis side duct) 60 is formed integrally with the air cleaner 6 in the air cleaner 6, and a wire guide member is provided in an opening 60 a (a fitting portion with a cabin side duct described later) of the chassis side duct 60. 62 is formed (see FIG. 2).

  On the other hand, in the illustrated example of the rear surface (cab back panel) 30 of the cabin 3, the cabin side duct 8 is attached to the left corner portion by a support member 80.

The upper end of the cabin side duct 8 is positioned at a height substantially equal to the roof of the cabin, and an air intake port (air inlet) 8a is formed at the upper end. Further, the lower end of the cabin side duct 8 is positioned substantially in the vicinity of the lower end of the cab back panel 30, and a bellows hose 9 made of an elastic member is fixed to the lower end thereof.
In FIG. 1, the code | symbol E shows an engine.

  In the normal state of FIG. 1, the outer diameter side of the opening 60 a of the chassis side duct 60 is fitted to the inner diameter side of the bellows hose 9 on the cabin 3 side.

  2, the bellows hose 9 on the cabin 3 side and the chassis side duct 60 are separated from each other. Although not shown in FIGS. 1 and 2, the tilt-up and the tilt-down are performed by operating a tilt lock release lever.

  In the embodiment of the present invention, the tilt lock release lever is provided with a support member for supporting the bellows hose. Even if there is a possibility that the bellows hose may be biased as shown by δ in FIG. 9 due to the mass of the hose itself after a long-time tilt-up with a much larger tilt-up angle than in the prior art. As shown in FIG. 2, the support member for supporting the bellows hose is provided (the illustration is omitted in FIG. 2), so that the deviation does not occur.

  Hereinafter, a part of the cabin tilt lock mechanism and the support member for supporting the bellows hose provided on the tilt lock release lever will be described in detail with reference to FIGS.

  FIG. 3 is a view of the bellows hose 9 from the rear of the vehicle. In normal operation, that is, when the cabin is tilt-locked, FIG. 4 is operated with a tilt lock release lever (to be described later) in order to tilt up the cabin. FIG. 5 is a view showing a state immediately after (the cabin has not yet been tilted up), and FIG. 5 is a view taken in the direction of arrow Y in FIG.

  In FIG. 3, the air cleaner 6 is fixed to the chassis frame (not shown) by the means described above (the air cleaner support member 7, the cab mount rear bracket 4, and the air cleaner bracket 5).

  On the other hand, the cabin 3 is fixed to the cabin-side mount member 40 by a known means. An upper end of an air spring 70 that is a cab suspension is attached to the cabin side mount member 40 by a suspension bracket 42. Further, in front of the suspension bracket 42, a tilt lock bracket 43 for attaching a tilt lock mechanism portion L not clearly shown is directly attached to the cabin by a known fastening member.

The lock release lever 50 that operates the tilt lock mechanism L to release the lock is shown in FIGS.
6 and 7, the left and right ends of the lock release lever 50 are bent into a hook shape, the right end hook 52 is engaged with the tilt lock mechanism L, and the left end hook is an operation handle 53. It has become. 6 is close to the state seen from the rear of the vehicle, and FIG. 7 is close to the state seen from above the vehicle.

At the center of the shaft portion 51 of the unlocking lever 50, a support member 90 bent in an L shape is fixed to the shaft portion 51 by known means, for example, welding. Specifically, the support member 90 includes a horizontal portion 90h, a bent portion 90b, and a vertical portion 90v, and is welded to the shaft portion 51 at a position away from the bent portion 90b of the horizontal portion 90h.

The left and right corner portions 90c outside the bent portion 90b of the vertical portion 90v of the support member 90 are edge-treated (chamfered), and even if they contact the bellows hose 9 (see FIGS. 4 and 5), the bellows hose 9 It is configured not to be damaged.

The support member 90 is preferably covered with rubber or the like after edge processing or after edge processing.

Further, the support member 90 is not limited to a plate, and may be a rod or a hollow pipe. In other words, any member that does not interfere with other members other than the bellows hose, has a rigidity that does not cause the bellows hose 9 to be damaged when it contacts the bellows hose 9, and does not deform the bellows hose 9. Applicable.

Referring to FIG. 5 (in the figure, Fr indicates the front of the vehicle and Lh indicates the left side of the vehicle), the side close to the handle 53 of the shaft 51 of the unlocking lever 50 is attached to the horizontal joist 32 of the cabin 3. The grommet 35 attached to the guide hole 34a of the guide member 34 is inserted.

In the state shown in FIG. 5, that is, in the tilted-up state (see FIG. 2), the unlocking lever 50 is pulled out to the left, and the support member 90 provided on the unlocking lever 50 has a bellows hose 9 at the vertical portion 90v. Is in contact with the vicinity of the lower end (near the connecting portion with the chassis duct 60). In the tilted-up state, the bellows hose 9 generates a component force in the direction of the arrow Y, so the bellows hose 9 tends to be biased in the direction of the arrow Y, but is biased by the support member 90 provided on the lock release lever 50. Is blocked.
Therefore, even if the cabin is left tilted up for a long time, the bellows hose 9 is not deformed by the gravity of the bellows hose 9 itself.

Normally, as shown by the broken line in FIG. 5, the lock release lever 50 is pushed rightward, and the support member 90 provided on the lock release lever 50 is shifted to the right from the bellows 9. Even if relative movement occurs between the cabin 3 side and the chassis frame 1 side during traveling, the support member 90 provided on the tilt lock release lever 50 and the bellows hose 9 do not contact each other.

The support member 90 having an extremely simple configuration may be fixed to the tilt lock release lever 50, and there is no concern about an increase in weight or cost.

  A special operation by the support member 90 for the bellows hose 9 is not required. That is, if the tilt lock operation is performed, the bellows hose 9 is automatically supported by the support member 90.

It should be noted that the illustrated embodiment is merely an example, and is not a description to limit the technical scope of the present invention.

FIG. 3 is a layout view showing a positional relationship between the cabin and the intake system according to the embodiment of the present invention, and shows a state in which the cabin is tilt-locked (support members and the like are not shown). FIG. 3 is a layout diagram showing a positional relationship between the cabin and the intake system according to the embodiment of the present invention, and shows a state where the cabin is tilted up (support members and the like are not shown). FIG. 3 is a layout diagram showing a positional relationship between an intake system and a tilt lock release lever according to an embodiment of the present invention, and a diagram showing a state in which a cabin is tilt-locked. FIG. 5 is a layout view showing a positional relationship between the intake system and the tilt lock release lever according to the embodiment of the present invention, and showing a state immediately after the tilt lock release lever is pulled out. FIG. 5 is a sectional view taken along the arrow Z in FIG. 4. The front view of the tilt lock release lever which concerns on embodiment of this invention. Top view corresponding to FIG. The side view which shows arrangement | positioning with a cabin and an intake system, and the figure which showed the tilt lock state. The figure which showed the state in which the bellows hose was crushed by the tilt-up for a long time.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Chassis frame 2 ... Tilt hinge bracket 3 ... Cabin 4 ... Cab mount rear bracket 5 ... Air cleaner bracket 6 ... Air cleaner 7 ... Air cleaner support member 8 ... Cab side Duct 8a ... Air inlet 9 ... Bellows hose 30 ... Rear / cab back panel 50 ... Tilt lock release lever 60 ... Chassis side duct 90 ... Support member

Claims (4)

A cabin side duct, a bellows hose coupled to the cabin side duct and communicating with the chassis side duct, and the bellows hose supported so that the bellows hose does not hang downward in the vertical direction when the cabin is tilted up. The support member is arranged so as not to interfere with the bellows hose in the state, and the support member is attached to the tilt lock release lever, and supports the bellows hose when the cabin is tilted up. And the structure of the cabin arrange | positioned so that it may isolate from a bellows hose in the normal state after a tilt down. The cabin structure according to claim 1, wherein an edge of the support member is chamfered. The cabin structure according to claim 1, wherein the support member is coated with a material having a hardness equal to or less than that of the bellows hose. The said support member is arrange | positioned so that the end vicinity of the side which is not couple | bonded with the cabin side duct of a bellows hose may be supported when a cabin is tilted up. The structure of the cabin.

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