Vehicle door of utility vehicle

Abstract

The invention relates to a vehicle door of a utility vehicle, comprising a cab which is open on both sides and is mounted on a chassis which has at least two axles with wheels (2) and means for ensuring the opening and closing of the door (1). The door (1) is mounted on a first frame (3) consisting of four struts (3a, 3b, 3c, 3d) rigidly connected to the cab at three points along the contour of the opening of the cab by means of a lower rod (6) and a first upper arm (8) connected to a second upper arm (9), forming a parallelogram.

Description

manual

[0001] The invention relates to a door for a road vehicle.

[0002] The road vehicle comprises in a known manner a cab for the driver, with an open shell on either side, in which are mounted means for controlling the tool, which are arranged at the front or rear of the vehicle chassis, which can be articulated or non-articulated and comprises at least two axles mounted on wheels (2).

[0003] Areas where passage is difficult due to narrow places or obstacles or vehicles on both sides often require the intervention of road vehicles.

[0004] For these reasons, they also comprise, in a manner also known per se, a door on each side which allows access to the cab in situations where there is little space between the side of the vehicle and the end of the area to be treated (for example a wall or a row of vehicles).

[0005] The means associated with the door to ensure its opening and closing consist, in a known manner, of sliding rails at the top and bottom of the opening.

[0006] This allows the operator to open the cab, for example when it is necessary to adjust a tool or the vehicle's suction device, requiring much less space than with a vertically hinged swing-out door.

[0007] Document DE2447698 describes a sliding door for a vehicle, which is guided in such a way that it can move longitudinally along a guide head, which can rotate around a vertical axis on a support arm, and the support arm is fixed to the vehicle body to rotate around the vertical axis.

[0008] When the door is opened, it can move to a middle position parallel to its closed position and then move in the longitudinal direction of the vehicle. The tilting of the sliding door in the parallel middle position is controlled by a connecting rod.

[0009] However, in systems of known type, a significant drawback still exists due to the position of the door relative to the front axle of the vehicle.

[0010] The axle is indeed in the same plane as the door, which makes it necessary to provide a certain cab height (usually high) so that the front wheels of the vehicle are completely disengaged and do not affect the opening and closing of the sliding door, especially when the front axle is turned.

[0011] U.S. Patent No. 4,493,2714 is the closest prior art known to the applicant, which shows a door for a road vehicle, which includes a cab open on both sides and mounted on a chassis, the chassis including at least two axles and devices for opening and closing the door respectively, and the door is mounted on a frame consisting of four pillars that match the contour of the cab opening and are fixed to the cab by arms forming a parallelogram.

[0012] The vehicle door designed according to the present invention can be moved without a slide rail, and the wheels are completely free whether it is opened or closed, and there is no need to raise the cab on the chassis.

[0013] Furthermore, the door of the invention is also associated with a specific cab profile, which comprises an inner / outer fixing channel.

[0014] The invention is characterized in that the devices for opening and closing the door, respectively, consist of parallelogram arms without any slide rails.

[0015] The present invention will be better understood through the following description of an embodiment with reference to the accompanying drawings:

[0016] Figure 1 It is a side view of a road vehicle equipped with the door of the present invention, with the door in the closed position.

[0017] Figure 2 express[ Figure 1 ] in the vehicle, the door of the present invention is open at this time.

[0018] Figure 3 It is a three-quarter view of the vehicle door designed according to the present invention as seen from the interior of the cab.

[0019] Figure 4 It is a cross-sectional view showing the various components used to install the vehicle door of the present invention in the cab.

[0020] Figure 5 It is a partial top view showing the door moving to the maximum open position.

[0021] Figure 6 is with [ Figure 5 ]Same top view, but this time the door is closed.

[0022] Figure 7 It is a top view showing the position of the door relative to the wheels during the opening process.

[0023] Figure 8 is a partial cross-sectional view showing a profile that can mate with the end of a door in either the closed or open position.

[0024] Figure 1 and 2 A road vehicle is shown equipped with a door (1) designed according to the invention, the door being in a closed position (i.e. closing the cab) and an open position (i.e. allowing free entry and exit from the cab).

[0025] On the chassis of the vehicle of known type there is mounted a box and suction means as well as means for maintaining the road, which will not be described in detail since they are not part of the present invention and are of known type.

[0026] like[ Figure 2 ]and[ Figure 7 ] as shown, the axle and front wheel (2) of the vehicle are located in the same plane as the door (1).

[0027] Figure 3 A door (1) designed according to the invention is shown as seen from inside the cab.

[0028] In the example shown, the door (1) is installed on the right side of the cab (with reference to the direction of travel of the vehicle).

[0029] The door (1) consists of a window (1') which is mounted by gluing on a first frame (3) which matches the contour of the cab opening.

[0030] The first frame (3) comprises four side surfaces (3a, 3b, 3c, 3d), namely a first front column (3a) and a second rear column (3b) on a vertical plane, which are connected together on a horizontal plane via a first upper side surface (3c) and a second lower side surface (3d).

[0031] Although they are located on the same vertical plane and horizontal plane respectively, the side surfaces (3a, 3b) and the side surfaces (3c, 3d) are not parallel to each other.

[0032] The first frame (3) is fixed to the cab by three arms (6, 8, 9), which will be described below.

[0033] The arrangement of the first frame (3) allows the door (1) to move between a closed position and an open position, the opening being performed by first deforming the door outwards and then moving it backwards to facilitate entry and exit.

[0034] The so-called front and rear of the vehicle refer to the direction of travel of the vehicle.

[0035] The door (1) is designed to be mounted by gluing a component to the first frame (3) to produce a composite assembly, such as Figure 4 shown.

[0036] To this end, the door (1) is pre-mounted at the factory on a first frame (3) designed to match a second frame (16) consisting of the profile (13).

[0037] A second frame (16) composed of a profile (13) is fixed to a shell (14) of a cab, and a frame (16') identical to the second frame (16) closes the shell (14) on the other side to form a closed space when the vehicle is traveling.

[0038] This allows attachment to be made inside or outside the basic structure, such as one or more locks, traffic lights or roof racks.

[0039] The principle of assembly by screwing together aluminium profiles eliminates the need for welding in the factory and for optional subsequent adjustments.

[0040] Without increasing the weight of the structure, the aluminum profiles can be reinforced with high-strength steel, which will also be fixed with screws.

[0041] The door (1) is characterized in that it can be moved to clear the opening without the need to provide slide rails at the top and bottom of the cab as in known types of models.

[0042] The door (1) is fixed to the cab shell at three fixing points: a lower point (4) and an upper point (5, 5') through a first frame (3), so that the door can move outward when opened and move inward when closed.

[0043] This makes it possible to convert the conventional opening movement along a circular trajectory into a substantially linear movement by moving the door opening away from the axle in a plane parallel to the cab, but without providing an overflow opening at least equal to the width of the door.

[0044] This allows rolling opening when necessary and where safety conditions are met, for example, in situations where frequent stopping and exiting are required.

[0045] The door itself is opened by a lower rod (6), one end of which is hinged to the above-mentioned attachment point (7) at the bottom of the vertical column (3d) at the bottom of the first frame (3), and the other end is hinged to a fixing point (4) at the rear of the shell, which is fixed to a vertical column (15) connected to the lower part of the second frame (16), which is composed of a profile part (13).

[0046] In the vertical plane, the attachment point (4) is higher than the attachment point (7).

[0047] The rod (6) of the attachment points (4, 7) is not straight but curved so as to compensate for the level difference between the attachment points (4) and (7) when the door is unlocked, thereby increasing the door opening range.

[0048] Advantageously, the rod (6) can be controlled by an electric push rod.

[0049] When the operator manually or electrically controls the opening of the door, the latter will move away from the frame (16) formed by the cab profile (13) due to the thrust exerted at the attachment point (7).

[0050] In the upper part of the door there is a parallelogram consisting of two arms (8, 9), the ends of which are respectively hinged to the upper horizontal pillar (3c) of the first frame (3) around the upper attachment points (5, 5') and are hinged in the upper part of the door (1) around the axis (11, 11'), which ensures the movement of the door without the use of slide rails as in known models.

[0051] More specifically, Figure 5 and 6 The movement of the door (1) is shown to clear the cab opening.

[0052] The first arm (8) of the parallelogram is located in front of the second arm (9) and is controlled by a gas spring (10).

[0053] When the door (1) is in the closed position, the gas spring (10) folds and holds the first arm (8) and the second arm (9) associated therewith in a static position to prevent the door (1) from being accidentally opened. Conversely, when the door (1) is in the open position, the gas spring (10) unfolds and holds the door in the corresponding position by preventing it from being accidentally closed.

[0054] The system can also be operated without gas springs.

[0055] exist Figure 7 It can be seen that during the opening process, the door (1) first moves away from the second frame (16), exceeds the axle carrying the front wheel (2), and then the arms (8, 9) forming a parallelogram will not send the door (1) back to the rear along a path basically parallel to the second frame.

[0056] The cross section of the profile component (13) is as follows Figure 8 shown.

[0057] The profile (13) cooperates with the door (1) to perform various functions.

[0058] The component piece (13) is made of a single piece and includes at least four grooves or slideways (21, 22, 23, 24) that allow movement, position adjustment or adding and removing functions and sealing at any time.

[0059] Windshield, doors and side windows.

[0060] In the example shown, the first groove (21) makes it possible to connect the profile (13) with a steel element mounted on the aluminum profile in order to reinforce the aluminum profile and to secure the locking system of the vehicle door.

[0061] The groove 21 is designed to strengthen the connection of the cab bearing structure.

[0062] The grooves (23) and (24) can be mounted on frame elements such as footrests, wind deflectors, accessory brackets, rearview mirrors, handles, roof carriers, windshield guards, working or signal lights, cameras and other electrical appliances.

[0063] The grooves (22, 23, 24) are shaped to accommodate the wires of the device to be fixed without piercing the frame.

[0064] The grooves 21 and 22 face toward the interior of the cab and are used to fix elements when high rigidity is required.

[0065] The groove (22) can be used to place accessories such as a display, a rear-view camera, a handle, and a mobile phone holder.

[0066] The grooves (23) and (24) face the outside of the cab and, while securing the components, also allow the passage of cables to supply light signal components or other electrical equipment.

[0067] These grooves make it possible to adjust the position or add or remove functions at any moment in the movement.

[0068] List of digital reference symbols

[0069] 1. Door

[0070] 1'.Glass plate

[0071] 2. Wheels

[0072] 3. First Framework

[0073] 3a. First front pillar

[0074] 3b. Second rear support

[0075] 3c. First upper side

[0076] 3d. Second lower side

[0077] 4. Door lower attachment point

[0078] 5. Attachment points on the door

[0079] 5'. Attachment point on door

[0080] 6. Downswing

[0081] 7. Attachment point under the pole

[0082] 8. Parallelogram Arm

[0083] 9. Parallelogram Arm

[0084] 10. Gas spring

[0085] 11. Rotation axis

[0086] 11'. Rotation axis

[0087] 13. Profile

[0088] 14. Housing

[0089] 15. Shell rear support

[0090] 16. Second Frame

[0091] 21. Notch

[0092] 22. Notch

[0093] 23. Notch

[0094] 24. Notch

Claims

1. A door device for a road vehicle, the road vehicle comprising a cab with open shells on both sides mounted on a chassis, the chassis comprising at least two axles (2) and means for ensuring the opening and closing of a door (1), the door being mounted on a first frame (3), the first frame being designed to match a second frame (16) fixed to the cab shell (14), the second frame being composed of a profile (13), the first frame (3) being formed by four uprights (3a, 3b, 3c, 3d) matching the profile of the cab opening and being fixed to the cab at three points by a lower rod (6), a first upper arm (8) being connected to a second upper arm (9) to form a parallelogram, characterised in that The profile (13) constituting the second frame (16) is made of one part and comprises at least four grooves or slides (21, 22, 23, 24) so ​​that the position can be adjusted or functions can be added and removed at any moment of movement.

2. The vehicle door according to claim 1, characterized in that The arrangement of the first frame (3) allows the door (1) to be moved between a closed position and an open position by moving it outwards and then backwards within the door of the cab without the need for slide rails on the top and bottom of the cab.

3. Vehicle door according to one of the preceding claims, characterized in that It comprises a window (1') mounted on a first frame (3) by adhesive, wherein the first frame is formed by a first front support (3a) and a second rear support (3b) in the vertical plane, and is connected together by a first upper side (3c) and a second lower side (3d) in the horizontal plane.

4. Vehicle door according to one of the preceding claims, characterized in that The lower rod (6) is controlled by an electric push rod.

5. Vehicle door according to one of the preceding claims, characterized in that It is fixed to the cab shell through a first frame (3) at three fixing points: a lower point (4), an upper point (5, 5'), and moves outward when opening and moves inward when closing according to the movement of arms (6, 8, 9).

6. The vehicle door according to claim 5, characterized in that The outward deflection movement of the door during the opening process is controlled by a lower rod (6), one end of which is hinged to a lower attachment point (4) at the bottom of a vertical column at the rear of the first frame (3), and the other end is hinged to an attachment point (7) above a lower horizontal column (3d) at the bottom of the door (1), and the lower attachment point (4) is located on a vertical plane higher than the attachment point (7).

7. The vehicle door according to claim 6, characterized in that The rod (6) connecting the attachment points (4, 7) is arcuate in order to compensate for the height difference between the attachment points (4) and (7) when the door is deflected.

8. The vehicle door according to any one of claims 5 to 7, characterized in that The two ends of the two upper arms (8, 9) forming a parallelogram are respectively hinged around points on the upper horizontal column (3c) of the first frame (3), and are hinged around axes (11, 11') to the upper part of the door (1), and the first arm (8) is located in front of the second arm (9).

9. The vehicle door according to claim 8, characterized in that The first arm (8) is controlled by a gas spring (10).

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