JP4097555B2 - Interference prevention mechanism during cabylt - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mechanism for preventing a front lid or the like from interfering with other members of a vehicle adjacent to the lid when the cab of the vehicle is tilted.
[0002]
[Prior art]
Conventionally, a bumper cover that covers the gap between the upper flange of the front bumper and the front grille is pivotally attached to the inside of the front bumper, and a rising portion is formed at the rear edge of the bumper cover so that the bumper cover rotates downward. A front bumper cover device for a vehicle is provided in which a return spring for biasing is interposed between the bumper cover and the frame, and a lever that rotates downward in conjunction with the tilt of the cab is in contact with the lower surface of the bumper cover. It is known (see, for example, Patent Document 1).
[0003]
In the vehicle front bumper cover device configured as described above, the gap between the front bumper and the front grille is closed by the bumper cover, so that the traveling wind does not enter the gap and air resistance can be reduced. Can improve the appearance. When the bumper cover is tilted, the lever is rotated downward in conjunction with the tilt, so that the bumper cover is rotated downward by the elastic force of the return spring. As a result, the bumper cover can be prevented from interfering with the front grille.
[0004]
[Patent Document 1]
Japanese Utility Model Publication No. 64-52844
[Problems to be solved by the invention]
In a truck having a tiltable cab, when the engine is moved forward in order to increase the load capacity, the cab tilt center, radiator, intercooler, or the like needs to be moved forward.
However, in the vehicle front bumper cover device disclosed in Patent Document 1, when the cab tilt center, radiator, intercooler, or the like is moved forward, the front grille contacts the bumper, radiator, or the like when the cab is tilted. There was a fear.
An object of the present invention is to provide an interference prevention mechanism at the time of cab tilt that can reliably prevent the front lid from coming into contact with other members of the vehicle adjacent to the lid when the cab is tilted with a relatively simple configuration. It is in.
[0006]
[Means for Solving the Problems]
As shown in FIGS. 1 to 3, the invention according to claim 1 includes a cab 13 that is tiltably mounted on the chassis frame 14, and a front lid 19 that is provided on the front surface of the cab 13 so as to be able to jump up. A tilting pump 28 provided with a switching lever 29 for supplying and discharging pressure oil to and from the tilting cylinder 26 for tilting the cab 13 and switching the supply and discharge of the pressure oil is opposed to the switching lever 29 and of the chassis frame 14. The switching lid 36 that closes the switching operation hole 34a formed in the member 34 that covers the outer surface so as to be openable, the first locking means 31 that locks the front lid 19 in the closed state, and the switching lid 36 are closed. Second locking means 32 for locking in the state, a first lever 51 provided in the cab 13 for releasing the first locking means 31, and a second provided in the front lid 19. Tsu is the interference prevention mechanism during Kyabuchiruto that includes a second lever 52 for releasing the click means 32.
[0007]
In the cablt interference prevention mechanism according to the first aspect of the invention, first, the first lever 51 in the cab 13 is operated to release the first lock means 31 and to jump the front lid 19 by hand. Next, by operating the second lever 52 in the front lid 19, the second locking means 32 is released and the switching lid 36 is opened. Further, a hand is inserted through the switching operation hole 34a to operate the switching lever 29 of the tilt pump 28, and the tilt cylinder 26 is driven by the tilt pump 28 to tilt the cab 13. At this time, since the front lid 19 is in a state of being flipped up, the front lid 19 does not contact other members of the vehicle adjacent to the lid 19.
Further, the member 34 that covers the outer surface of the chassis frame 14 is a step cover, and a switching operation hole 34 a is preferably formed in the step cover 34.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 2 and 3, the cab 13 of the cab over type truck 10 is mounted on the chassis frame 14 so as to be tiltable. Specifically, the lower surface of the cab 13 is placed on the pair of side members 14 a of the chassis frame 14 via the pair of first air springs 11, and the lower surface of the cab 13 is attached to the second air spring 12 and the floating bar 16. Via the side member 14a. The lower end of the cab 13 is pivotally supported at the front ends of the pair of side members 14a via hinge pins 17 so that the cab 13 can be tilted about the hinge pins 17. Further, a concave portion 13a for accommodating an engine auxiliary machine (not shown) such as a reservoir tank of engine cooling water is formed on the front surface of the cab 13, and the concave portion 13a is closed openably by a front lid 19 (see FIG. 1, FIG. 4 and FIG. 5). The front lid 19 is attached to the cab 13 via a pair of hinges 19a, 19a (FIGS. 2, 3 and 5) so as to be able to jump up. 1 to 5 is a front bumper attached to the front end of the chassis frame 14 and extending in the vehicle width direction along the lower edge of the front end of the cab 13.
[0009]
On the other hand, a pair of lower brackets 18 protruding upward are fixed to the front ends of the pair of side members 14a (FIGS. 2 and 3). Front ends of a pair of link levers 21 fixed to both ends of a torque tube (not shown) are fitted into upper ends of these lower brackets 18, respectively, and a pair of hinge pins 17 are inserted.
[0010]
A pair of cab frames 13b extending in the traveling direction of the track 10 are fixed to the bottom surface of the floor panel 13d of the cab 13, and the bottom surfaces of the pair of cab frames 13b facing the pair of link levers 21 are substantially T. A pair of letter-shaped upper brackets 22 are fixed to each other. The lower end of the upper bracket 22 is rotatably attached to the other end of the link lever 21. A pair of pins 23 are provided at the front end of the upper bracket 22 so as to extend in the vehicle width direction, and the pins 23 and the hinge pins 17 are connected by a shock absorber 24. The first air spring 11 is mounted between the upper surface of the link lever 21 and the lower surface of the front end of the upper bracket 22.
[0011]
Near the rear end of the upper bracket 22, the tip of the plunger 26a of the tilt cylinder 26 pivotally attached to the side member 14a is pivoted. An upper end of a tilt stopper 27 that can hold the cab 13 at a predetermined angle when the cab 13 is tilted is pivotally attached to the rear end of the upper bracket 22. The tilt stopper 27 is urged along the tilt cylinder 26 by a spring (not shown).
[0012]
A tilt pump 28 (FIGS. 1 to 3) for supplying and discharging pressure oil to and from the cylinder 26 is connected to the tilt cylinder 26, and the tilt pump 28 is driven by an electric motor (not shown). . The tilt pump 28 is attached in the vicinity of the front end of the side member 14a, and the tilt pump 28 is provided with a switching lever 29 for manually switching supply / discharge of the pressure oil. Further, on the outer surface in the vicinity of the front end of the side member 14a, the step 33 for getting on and off the cab 13 and the side member 14a and the like from being seen from the periphery of the step 33 are prevented, that is, the outer surface of the side member 14a is provided. An overlying plastic step cover 34 is attached. A switching operation hole 34a is formed in the step cover 34 so as to face the switching lever 29, and the switching operation hole 34a is closed by a plastic switching lid 36 so as to be opened.
[0013]
Further, between the lower end of the front lid 19 and the lower edge of the concave portion 13a on the front surface of the cab 13, a first locking means 31 for locking the front lid 19 in a closed state is provided (FIG. 1). A first lever 51 connected to the first lock means 31 via a first wire 41 is provided below the instrument panel 13 c in the driver's seat of the cab 13. By operating the first lever 51, the first locking means 31 can be released. On the other hand, a second locking means 32 is provided between the upper end of the switching lid 36 and the upper edge of the switching operation hole 34a to lock the switching lid 36 in a closed state. In addition, a second lever 52 connected to the second locking means 32 via a second wire 42 is provided in the recess 13 a on the front surface of the cab 13. By operating the second lever 52, the second locking means 52 can be released.
[0014]
Further, a pair of side members 14a facing the rear end of the cab 13 is provided with a rear arch 37 formed in a substantially inverted U shape (FIGS. 2 and 3). A pair of rear brackets 38 are fixed to both side edges of the rear arch 37 so as to face the pair of cab frames 13b. The pair of rear brackets 38 are attached with the floating bars 16 formed in a substantially hat shape via the pair of second air springs 12. 2 and 3 is an intercooler for cooling the intake air compressed by the turbocharger, and reference numeral 40 is a radiator for cooling the engine coolant.
[0015]
A procedure for tilting the cab 13 of the track 10 thus configured will be described.
First, by operating the first lever 51 provided in the driver's seat of the cab 13, the first locking means 31 of the front lid 19 is released, and the front lid 19 is jumped up by hand. Next, by operating a second lever 52 provided in the front lid 19, the second locking means 32 is released and the switching lid 36 is opened. Further, a hand is inserted from the switching operation hole 34a to operate the switching lever 29 of the tilt pump 28, and the tilt cylinder 26 is driven by the tilt pump 28 to tilt the cab 13. At this time, since the front lid 19 is in a state of being flipped up, the cab 13 can be tilted smoothly without the front lid 19 contacting the front bumper 20, the intercooler 39, the radiator 40, and the like. That is, since the cab 13 cannot be tilted unless the front lid 19 is lifted up, it is possible to reliably prevent the front lid 19 from coming into contact with the front bumper 20, the radiator 40, or the like when the cab 13 is tilted.
[0016]
Since the switching operation hole 34a is provided in the plastic step cover 34 and the switching operation hole 34a is closed by the plastic switching lid 36, the setting of the switching operation hole 34a and the production of the switching lid 36 are relatively easy. It can be performed easily and the appearance of the track 10 is hardly impaired.
In this embodiment, the step cover is mentioned as a member covering the outer surface of the chassis frame, but a front bumper or the like may be used.
[0017]
【The invention's effect】
As described above, according to the present invention, the tilting pump is provided with the switching lever for switching the supply and discharge of the pressure oil to and from the tilting cylinder, and is a member that faces the switching lever and covers the outer surface of the chassis frame. The switching operation hole provided in is closed so that the switching lid can be opened, a first lever for releasing the first locking means of the front lid is provided in the cab, and the second locking means of the switching lid is further released. Since the second lever is provided in the front lid, the first locking means is released by the first lever and the front lid is lifted up, and then the second locking means is released by the second lever and the switching lid The switch lever of the tilting pump can be operated only after opening. That is, since the cab cannot be tilted unless the front lid is lifted up, it is possible to reliably prevent the front lid from coming into contact with other members of the vehicle, such as a front bumper and a radiator, close to the lid when the cab is tilted.
[Brief description of the drawings]
FIG. 1 is a side view of a cab showing an interference prevention mechanism at the time of carburing according to an embodiment of the present invention.
2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a cross-sectional view corresponding to FIG. 2 showing a state in which the cab is tilted.
FIG. 4 is a perspective view of a cab showing a state where a front lid is closed.
FIG. 5 is a perspective view of a cab showing a state where a front lid is opened.
[Explanation of symbols]
10 Cabover truck (vehicle)
13 Cab 14 Chassis frame 19 Front lid 26 Cylinder 28 Tilt pump 29 Switching lever 31 First locking means 32 Second locking means 34 Step cover 34a Switching operation hole 36 Switching lid 51 First lever 52 Second lever

Claims (2)

A cab (13) mounted on the chassis frame (14) so as to be tiltable;
A front lid (19) provided on the front surface of the cab (13) so as to be jumped up;
A tilt pump (28) provided with a switching lever (29) for supplying and discharging pressure oil to and from the cylinder (26) for tilting the cab (13) and switching supply and discharge of the pressure oil;
A switching lid (36) for closing the switching operation hole (34a) formed in the member (34) facing the switching lever (29) and covering the outer surface of the chassis frame (14);
First locking means (31) for locking the front lid (19) in a closed state;
A second locking means (32) for locking the switching lid (36) in a closed state;
A first lever (51) provided in the cab (13) for releasing the first locking means (31);
A mechanism for preventing interference at the time of carburet, comprising a second lever (52) provided in the front lid (19) for releasing the second locking means (32). The mechanism for preventing interference at the time of cablit according to claim 1, wherein the member (34) covering the outer surface of the chassis frame (14) is a step cover, and a switching operation hole (34a) is formed in the step cover (34).

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