An external sliding door device for vehicles

Abstract

This invention discloses an external sliding door device for vehicles, comprising a sliding door, a traveling trolley, a swing arm, a rotating arm, a door frame mounted on the vehicle body, and a track. The track is located above or below the door frame. The traveling trolley moves on the track. One end of the swing arm is connected to the traveling trolley, and the other end is connected to one side of the inner surface of the sliding door. A roller assembly is provided at the other end of the rotating arm. The inner surface of the sliding door is provided with a guide rail, which includes a straight section and a curved section. The straight section is parallel to the sliding door and is arranged along the sliding direction. One end of the curved section is connected to the straight section, and the other end bends to the sliding door. The roller assembly is constrained to roll on the guide rail. When the roller assembly rolls to the curved section, it drives the rotating arm to rotate, thereby opening and closing the sliding door. This invention has a simple and compact structure, operates smoothly, avoids the disadvantages of shortened service life caused by using thin steel wire ropes or belt drives, and also avoids setting a track on the outer surface of the vehicle body.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more specifically to an external sliding door device for vehicles. Background Technology

[0002] Vehicle doors are important passageways for passengers to get on and off, and typically come in various forms such as inward-swinging doors, outward-swinging doors, and sliding doors. Inward-swinging doors have problems such as poor sealing, occupying passageway space, and posing a risk of injury to passengers, while outward-swinging doors, due to their greater outward opening, can easily injure people outside the vehicle.

[0003] The transmission system of existing vehicle external sliding door devices mainly uses thin steel wire ropes or belts to drive the trolley along a track. Because the sliding door's movement path is L-shaped, the thin steel wire ropes or belts experience friction with the track when bending. Furthermore, the rollers in these devices have small diameters, resulting in significant alternating stress when the ropes or belts fold back 180 degrees, making them prone to breakage. Additionally, this system requires three tracks both inside and outside the vehicle body. Therefore, the existing rope-and-pulley or belt drive mechanisms have a limited lifespan, causing inconvenience and aesthetic issues for the vehicle's layout and appearance, and failing to meet the standards and practical requirements for the entire lifespan of sliding doors. Summary of the Invention

[0004] In view of the technical problems existing in the prior art, the present invention provides an external sliding door device for vehicles. The device has a simple and compact structure, runs smoothly, avoids the disadvantages of shortening the service life caused by using thin steel wire rope or belt drive, and avoids setting tracks on the outer surface of the vehicle body.

[0005] The technical solution adopted in this invention is as follows: A vehicle external sliding door device is provided, including a sliding door, a traveling trolley, a swing arm, a rotating arm, a door frame mounted on the vehicle body, and a track. The track is located above or below the door frame, and is arranged along the sliding direction of the sliding door with one end gradually curving inward towards the inside of the door frame. The traveling trolley moves on the track. One end of the swing arm is connected to the traveling trolley, and the other end is connected to one side of the inner surface of the sliding door. A rotating arm is provided on the opposite side of the sliding door and the side connected to the swing arm. One end of the arm is rotatably connected to the vehicle body inside the door frame, and the side frame of the door frame on that side serves as the limit for the sliding door to slide when rotating. The other end of the arm is equipped with a roller assembly. The inner surface of the sliding door is provided with a guide rail, which includes a straight section and a curved section. The straight section is set along the sliding direction and is parallel to the sliding door. One end of the curved section is connected to the straight section, and the other end bends to the sliding door. The roller assembly is constrained to roll on the guide rail. When the roller assembly rolls to the curved section, it drives the arm to rotate to realize the opening and closing of the sliding door.

[0006] As a preferred embodiment of this technical solution, the roller assembly consists of two or more rollers, which roll on roller shafts that are fixed to a rotating arm; one roller is constrained to roll on the inner surface of the guide rail, while the remaining rollers are constrained to roll on the outer surface of the guide rail.

[0007] As a preferred embodiment of this technical solution, the track consists of two parallel guide bars and a connecting plate between the guide bars, and the track is installed horizontally or vertically on the vehicle body.

[0008] As a preferred embodiment of this technical solution, when the track is vertically arranged, two parallel guide bars are arranged vertically. The traveling trolley includes hinge plates, a rotating shaft, and a swing arm seat. Two hinge plates are provided, and both hinge plates and the swing arm seat are rotatably sleeved on the rotating shaft. The two hinge plates are symmetrically arranged on both sides of the rotating shaft, and the swing arm seat is arranged on the opposite side of the two hinge plates, connecting the swing arm. Each hinge plate is provided with corresponding upper rollers and lower rollers. The upper rollers roll on the upper surface of the upper guide bar, and the lower rollers roll on the lower surface of the lower guide bar.

[0009] With the above structure, the external sliding door device of the vehicle of the present invention drives the sliding door to open and close by moving the trolley. The rotating arm assists the sliding door to slide by rolling the rollers on the door guide rail. The sliding door runs smoothly when opening and closing, avoiding the disadvantage of shortening the service life caused by using thin steel wire rope or belt drive, and also avoiding the aesthetic problem caused by setting guide rails on the outside of the vehicle. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the present invention (sliding door fully open);

[0011] Figure 2 This is another structural schematic diagram of the present invention;

[0012] Figure 3 This is a schematic diagram of the structure of the roller on the rotating arm of the present invention when it rolls to the curved section;

[0013] Figure 4 A schematic diagram of the sliding door of the present invention when it is ready to close;

[0014] Figure 5 This is a schematic diagram of the sliding door of the present invention when it is fully closed;

[0015] Figure 6 This is a schematic diagram of the structure of the walking vehicle of the present invention;

[0016] Figure 7 This is a schematic diagram of the hinge plate of the walking trolley of the present invention;

[0017] Figure 8 This is another structural schematic diagram of the hinge plate of the walking trolley of the present invention;

[0018] In the diagram, 1 is the sliding door, 2 is the trolley, 2.1 is the hinge plate, 2.2 is the swing arm seat, 2.3 is the pivot, 3 is the track, 4 is the car body, 5 is the swing arm, 6 is the door frame, 7 is the swing arm, and 8 is the guide rail. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] like Figures 1-8 As shown, the present invention provides a vehicle external sliding door device, including a sliding door 1, a traveling trolley 2, a swing arm 5, a rotating arm 7, a door frame 6 mounted on the vehicle body 4, and a track 3. The track 3 is located above or below the door frame 6, and is arranged along the sliding direction of the sliding door 1 with one end gradually curving inward toward the door frame 6. The traveling trolley 2 moves on the track 3 by a drive, and the sliding door 1 slides on and outside the door frame 6 under the drive of the traveling trolley 2. One end of the swing arm 5 is connected to the traveling trolley 2, and the other end is connected to one side of the inner surface of the sliding door 1. A rotating arm 7 is arranged on the opposite side of the sliding door 1 and the side connected to the swing arm 5, and one end of the rotating arm 7 rotates. The sliding door 1 is connected to the vehicle body 4 inside the door frame 6. When rotating, the side frame of the door frame 6 on that side serves as the limit for the sliding door 1 to slide. That is, when the sliding door 1 drives the rotating arm 7 to rotate to the side frame, the rotating arm can no longer rotate. A roller assembly is provided at the other end of the rotating arm 7. A guide rail 8 extending along the sliding direction of the sliding door 1 is provided on the inner surface of the sliding door 1. The guide rail 8 includes a straight section and a curved section. The straight section is set along the sliding direction and is parallel to the sliding door 1. One end of the curved section is connected to the straight section, and the other end bends to the sliding door 1. The roller assembly on the rotating arm 7 is constrained to roll on the guide rail 8. When the roller assembly rolls to the curved section, it drives the rotating arm to rotate, thereby realizing the opening and closing of the sliding door 1.

[0021] In specific implementations, this invention has several embodiments, such as A, where the track 3 is located above the door frame 6, and the rotating arm 7 is located below the door frame 6; B, where the track 3 is located below the door frame 6, and the rotating arm 7 is located above the door frame 6. The connection between the swing arm 5 and the sliding door 1 is located on the side of the sliding door 1 closest to the curved side of the track 3. The inner side of the guide rail 8 on the sliding door 1 is the side closest to the inner surface of the sliding door 1, and the opposite side is the outer side. The roller assembly consists of two rollers, three rollers, or four rollers. One roller is located on the inner side of the guide rail 8. Both the rollers and the guide rail are enveloping rollers, meaning that the rolling surfaces of the guide rail and the rollers are enveloping surfaces. The enveloping surface can be a concave arc surface, a convex arc surface, or a circular arc surface, and the corresponding rolling surface of the roller is a convex arc surface, a concave arc surface, or a circular arc surface. When the roller rolls on the straight section of the guide rail 8, the rotating arm 7 is erected at a certain angle to the vehicle body. When the roller reaches the curved section of the guide rail 8, the inner roller stops at the curved section, and at least one of the outer rollers continues to roll on the outer surface of the curved section, thereby driving the rotating arm 7 to rotate and realize the opening or closing of the sliding door 1.

[0022] The track 3 of this invention consists of two parallel guide bars and a connecting plate connecting the guide bars. The track 3 is installed horizontally or vertically on the vehicle body. When the track 3 is installed vertically, the two parallel guide bars are arranged vertically. The traveling trolley 2 includes a hinge plate 2.1, a rotating shaft 2.3, and a swing arm seat 2.2. Two hinge plates 2.1 are provided. Both hinge plates 2.1 and the swing arm seat 2.2 are rotatably sleeved on the rotating shaft 2.3. The two hinge plates 2.1 are symmetrically arranged on both sides of the rotating shaft 2.3. The swing arm seat 2.2 is arranged on the opposite side of the two hinge plates 2.1 and is connected to the swing arm 5. Each hinge plate 2.1 is provided with a corresponding upper roller and a lower roller. The upper roller rolls around the upper surface of the upper guide bar, and the lower roller rolls around the lower surface of the lower guide bar. The upper roller and the lower roller are clamped on the guide bar, realizing the transfer of the weight of the sliding door 1 to the vehicle body 4.

[0023] In a specific implementation of the present invention, the traveling trolley 2 is driven by a motor. As an example, the motor can be set inside the rotating shaft, and the rollers can be driven to rotate by a transmission mechanism.

[0024] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of this patent.

Claims

1. A vehicle external sliding door device, characterized in that: The system includes a sliding door, a trolley, a swing arm, a rotary arm, a door frame mounted on the vehicle body, and a track. The track is located above or below the door frame, running along the sliding direction of the sliding door and gradually curving inwards at one end. The trolley moves on the track. One end of the swing arm is connected to the trolley, and the other end is connected to one side of the inner surface of the sliding door. A rotary arm is located on the opposite side of the sliding door from the swing arm. One end of the rotary arm is rotatably connected to the vehicle body inside the door frame, and its rotation is limited by the side frame of that side of the door frame. The other end of the rotary arm is equipped with a roller assembly. The inner surface of the sliding door has a guide rail, which includes a straight section and a curved section. The straight section is parallel to the sliding door and runs along the sliding direction. One end of the curved section connects to the straight section, and the other end curves towards the sliding door. The roller assembly is constrained to roll on the guide rail. When the roller assembly rolls to the curved section, it drives the rotary arm to rotate. The sliding door is opened and closed by means of a roller assembly consisting of two or more rollers. The rollers roll on roller shafts, which are fixed to a rotating arm. One roller is constrained to roll on the inner surface of the guide rail, while the remaining rollers are constrained to roll on the outer surface of the guide rail. The track consists of two parallel guide bars and a connecting plate connecting the guide bars. The track is set horizontally or vertically on the vehicle body. When the track is set vertically, the two parallel guide bars are set vertically. The traveling trolley includes hinge plates, a rotating shaft, and a swing arm seat. Two hinge plates are provided, and both hinge plates and the swing arm seat are rotatably sleeved on the rotating shaft. The two hinge plates are symmetrically arranged on both sides of the rotating shaft. The swing arm seat is located on the opposite side of the two hinge plates and connects to the swing arm. Each hinge plate is provided with corresponding upper and lower rollers. The upper roller rolls around the upper surface of the upper guide bar, and the lower roller rolls around the lower surface of the lower guide bar.

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