DE3319215A1 - Operating device of an automatically pivotable front panel flap in tiltable drivers' cabs on motor vehicles - Google Patents

Abstract

The invention relates to motor vehicle technology. The aim of the invention is to achieve improved maintenance of the aggregates of motor vehicles through the front panel flap in a tilted and untilted driver's cab. The object of the invention is to provide operation of the front panel flap which guarantees good accessibility from the front to the engine compartment without additional flaps and covers, and reduces the wear of buffer elements on the front panel flap. The essence of the invention is, then, that a linkage is arranged in a hinged fashion on the front panel flap, which is mounted rotatably on the frame side, and that an internal and an external sliding piece are situated between the joints of the linkage, and that there are seated on the internal sliding piece two guide bolts which can be displaced in an oblong guide of the external sliding piece. Situated on the external sliding piece is a detent pawl which is rotatably mounted and provided with a guide edge, incline and step. The field of application of the invention is tiltable drivers' cabs on motor vehicles.

Description

'l'itel

Actuating device of an automatically pivoting Ybrder wall flap in tiltable cabs on gene field of application of the invention field of application of the invention is automotive engineering. Objects of application are preferred Commercial vehicles with tilting cab.

Characteristics of the known technical solutions They are tiltable Driver's cabs known, in which by a correspondingly large distance between Lower edge of the front wall flap and upper edge of the bumper or frame cross member tilted of the Bahrerhaus is possible without having to open the front wall flap beforehand. They have the disadvantage that the inflowing through the gap described Air swirls and thus the air resistance is increased and that the front view the vehicle is adversely affected. Often the space in between also has an influence on the height of the vehicle.

@@ ind worthwhile tilting cabs are known, in which before the Tilting of the cab, the front wall flap attached via appropriate hinges must be opened. During the tilting process, this flap swings through the hinge independently over the bumper area.

The disadvantage of these solutions is that that before to the Tilting necessary opening the front wall can be eaten and damage in this can be the result.

Furthermore, tiltable cabs are known, @@ d @ @ -chen the front wall flap via a @tarre Z @ an @ t @@ ru is automatically swiveled out when tilting and that before disadvantages described are eliminated.

However, these solutions in turn have the disadvantage that by the rigid Connection of the forced connection a folding down of the front flap to carry out simple control and maintenance work (e.g. oil level when not tipped of the cab are either not possible or due to other complex solutions (additional flaps and covers) can be realized.

This disadvantage is to be eliminated by the solution according to the invention.

OBJECT OF THE INVENTION The aim of the invention is in tilting cabs On Eutzkraftwagen good maintenance of the engine and the aggregates through the front wall flap Can be reached when the cab is tilted or not.

The essence of the invention The technical problem The technical problem of the invention is to provide an actuation of the front wall flap which good accessibility from the front to the engine compartment without additional flaps and covers Guaranteed with tilted and not tilted cab and the wear of the buffer elementess on the front flap.

The Features of the Invention There is one on a tilt cab automatically pivoting front wall flap with a linkage, wolches articulated one side with the cab and on the other side with the frame side rotatably mounted front wall flap is connected.

The features of the invention are that between both Articulated this linkage an inner and an outer sliding piece are arranged On the inner shim there are guide pins that are in the free space a slot guide of the outer sliding piece between the front and rear Karvensegment are unu can be moved in it.

There is a pawl in a pivot point on the outer sliding piece rotatably mounted, an actuating element and a guide cable with step and Has run-up curve. The approach curve rests on the guide pin.

There is one between the front wall flap and the sliding pieces Tension spring on one side of the hinged connection to the front wall flap and is rotatably arranged on the other side on the pawl.

While the cab is being tilted, the sliding pieces are pushed through the tension spring is tightly tensioned, so that the actuating device looks like a rigid linkage works.

With the further swiveling of the cab and thus the bearing cheek around the cab pivot point, the linkage and the sliding pieces are out of position postponed. The front wall flap is connected via the articulated connection of the inner the front wall of 6 Ki pivot points, from the immersion area of the front wall when tilting swung out.

When the cab is tilted back, the processes are reversed Direction, whereby the tension spring braces the sliding pieces against each other. Is this The cab is tilted back in the driving position, the front flap is with the upper edge the tension @ eder to the stop buffer under tension. All tolerances occurring will be thanks to the free drying and the ability to move the sliding pieces without any adjustment effort recorded.

Should the front wall flap when the cab is not tilted opened, it will be the spring force of the Tension spring pivoted out of its position. It slides with the flap in an articulated manner connected inner sliding piece in the slot guide via the guide bolts along the run-up curve of the spur pawl until the front guide pin on the front Curve segment is present and a we @@ ere @renb @ -gung is limited.

The step of the pawl engages in the inside guide pin, thereby maintaining the front door in the open position.

When the flap is closed, the locking pawl is activated via the actuating element unlocked by drilling the step so that the guide pins are released and the front wall flap can be pivoted back into its original position.

Exemplary embodiment The invention is intended to play in an exemplary embodiment below are explained in more detail.

The associated drawing shows in Figure 1 a device of an automatic swiveling vpe on a tilting driver's cab.

The actuation device of an automatically pivoting front wall flap consists of an inner sliding piece 1, which via guide pins 3 in the slot guide 5 @ an outer sliding piece 2 is performed, and a linkage 11, which over an angle flange 10 and a lock nut 12 adjustable in length with the outer sliding piece 2 is connected. The inner sliding piece 1 is at its front The end at the pivot point DP 2 is articulated to the front wall flap via an articulation angle above 14 16 connected, while the linkage 11 at @ienem upper Ens via a joint 13 in the pivot point DP 3 articulated with the driver's cab-side bearing cheek 19, which in Dr @ hpunkt D1F the driver's cab is rotatably mounted in a driver's cab bearing block 20 on the ram side is. The front wall flap 16 is at its lower part via a hinge angle below 15th mounted in the pivot point DP 1 in a frame-side hinge 21, while the upper part on a stop buffer 18 arranged on the wall 17, also under spring tension of the tension spring 7 is applied.

On the outer sliding piece 2 is a bolt 9 in the pivot point DP 4 a pawl 4 rotatably arranged, the selement from an actuation 8 and a leading edge 6 with a step 6a and an overrun curve 6b. Above a tension spring 7 on the front side in the pivot point DP 2 and on the rear Side is arranged in the upper part of the pawl 4, d curve 6b of the pawl 4 to the Führbol conditions and at the same time the outer sliding piece inner sliding piece 1 braced.

With a rigid linkage, there are constant relative movements between Frame and cab transferred to the front wall flap 16, which leads to increased wear leads to the stop buffer 18. By the two sliding pieces 1 and 2, which by the Tension spring 7 can be displaced against one another in its elongated hole guide 5 within the framework of the free stretches a (corresponding to relative paths) are tensioned in the solution according to the invention these movements are recorded within the sliding pieces 1 and 2 while the front wall flap 16 itself remains largely in Ruge, so that the wear on the stop buffer 18 can be kept low.

When the cab is tilted, sliding pieces 1 and 2 are through the tension spring 7 firmly clamped, the rear of the two guide pins 3 on the rear curve segment t 5 comes to rest, so that the actuator like a rigid linkage works. Associated with this by tilting the cab further rotation of the bearing cheek 19 about the pivot point DPF of the cab the rod 11 and the sliding pieces connected to it via the angle flange 10 1 and 2 moved out of their position. The front wall flap 16 is on the articulated Connection of the inner sliding piece 1 via the trembling pivot points DP 2 and on the frame side DP 1 from @@ pocket area of the front wall 17 when tilting pivoted out. When the cab is tilted back, the process is reversed Direction, the tension spring 7 also pushing the sliding pieces 1 and 2 against each other braced and the condition of a rigid linkage is maintained.

When the cab is fully tilted back into the driving position, The front wall flap 16 is back in its starting position according to FIG.

It lies with its upper edge on the Asnchlagpuller 1 @ under construction by the tension spring 7, so that at this point through the built-in free stretches a and the ability to move the sliding pieces 1 and 2 all occurring tolerances can be recorded during assembly without any adjustment effort.

To carry out simple control and maintenance work in not In the tilted state of the cab, the front wall flap 16 is overcome the spring force of the tension spring 7 is pivoted out of its position about the pivot point DP 1. The inner sliding piece 1 slides towards the articulated connection with the front wall flap 6 in the slot guide 5 via the guide pins 3 en of the ramp 6b of the The pawl 4 along until the front of the two guide pins 3 on the front Curve member 5a is applied and a further thrusting movement is limited. simultaneously the step 6a of the pawl 4 engages in the rear of the two guide pins 3 on, whereby the front flap is held in the open position.

About the actuating element 8, the pawl 4 is rotated Unlocked clockwise on the stub 6a, so that the guide pin 3 is released and the front wall flap 16 is pivoted back into its starting position according to FIG can be. The actuating device is preferably for reasons of stability to be arranged on both sides of the front wall flap 16.

List of the reference symbols used 1 inner sliding piece 2 outer sliding piece 3 guide pin 4 locking pawl d5 slot guide 5a front Curve segment 5b Rear curve segment 6 Leading edge 6a Step 6b approach curve 7 tension spring 8 actuating element 9 bolt; pivot point 10 angle flange 11 linkage 12 Lock nut 13 Articulation piece 14 Articulation angle, top 15 Articulation angle, bottom 16 Front wall flap 17 Front wheel 18 Stop buffer 19 Bearing cheek, cab side 20 Bearing block 21 Frame-side hinge bracket DP 1 pivot point 1 DP 2 pivot point 2 3 pivot point 3 DPF pivot point in the driver's cab on a free stretch

Claims (1)

Invention claim 1. Actuating device of an automatically pivotable front wall flap in the case of tilting cabs on motor vehicles, with a linkage which is articulated on one side with the cab, preferably on the Laß @ rwange and on the the other side is connected to the front pe, the frame-side rotatable GE marked in that there is an inner slide piece between the two joints of the G @ an (@) (1) and an external set (2) are located and on the inner sliding part (1) two guide pins (3) are arranged, ie in the -r @ iraum an elongated hole guide (5) of the outer sliding piece (2), between a front curve segment (5a) and a rear curve segment (5b) can be displaced in the area of the lines (a), and on the outer sliding piece (2) in a pivot point (9) rotatably mounted a Locking pawl (4) is arranged, which has a B @ actuating element (8) and a leading edge (6) with a step (6a) and a ramp curve (6b), which on the guide pin (3) and between the front wall flap (16) and the rail pieces (1; 2) a tension spring (7) is located on one side, preferably on the articulated Connection to the front wall flap (16) and on the other side to the pawl (4) is rotatably arranged.