A door structure with a foldable inner door panel.

Abstract

This invention discloses a foldable inner door structure, characterized by comprising an outer door panel and an inner door panel rotatably connected to the outer door panel. One end of a door hinge is connected to the vehicle body frame, and the other end is connected to the inner door panel. This foldable inner door structure allows for the folding of all four inner door panels. After the vehicle is parked and the doors are opened, the panels fold and retract, increasing the space for passengers to exit and open the doors. This ensures that even in relatively confined spaces, opening the doors compresses the space of the interior door trim panels, further increasing exit space and facilitating passenger entry and exit. It possesses strong practicality and promising application prospects.

Description

Technical Field

[0001] This invention belongs to the field of automotive technology, and more specifically, relates to a door structure with a foldable inner door panel. Background Technology

[0002] Car doors are used in automobiles. Existing cars have two-door and four-door designs. The limited opening angle and opening space of the doors can affect the normal entry and exit of passengers.

[0003] Existing door interior trim panels, due to their overall shape and structural design, impose certain requirements on the door opening angle. If the angle is too small, the thickness of the door panel will hinder passengers from getting in and out of the vehicle. In areas with limited opening space, the door opening angle is restricted, making it inconvenient for passengers to get out of the vehicle.

[0004] Announcement No. CN105649496A, Announcement Date: June 8, 2016, Patent: A Foldable Car Door. This invention discloses a foldable car door, belonging to the field of car doors. It includes a car door frame, a first guide rail, a second guide rail, a first fixed pulley, a second fixed pulley, a revolving door, a folding door, a first rotating joint, a second limiting rotating joint, leaf springs, etc. This door folds down completely after opening, reducing the space occupied by the door. However, this structure significantly impacts the overall appearance of the vehicle and makes it inconvenient for passengers to get in and out of the vehicle in a confined space. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the prior art and to provide a door structure in which the inner panel of the door folds as the door is opened after the vehicle is parked, thereby increasing the space for people to get out of the vehicle and facilitating people to get in and out of the vehicle.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: the provided foldable door structure includes an outer door panel and an inner door panel rotatably connected to the outer door panel, with one end of the door hinge connected to the vehicle frame and the other end connected to the inner door panel.

[0007] To make the above technical solutions more detailed and specific, the present invention also provides the following further preferred technical solutions to achieve satisfactory practical effects:

[0008] The door hinge is connected to the inner door panel via an upper push rod and a lower push rod.

[0009] One end of the upper push rod is connected to the door inner panel control point located on the inner panel of the door via an arc-shaped rod.

[0010] The bow-shaped rod includes an upper part and a lower part, which are bent at a certain angle. The corners of the upper and lower parts are rotatably connected to the inner door panel via an upper rotating shaft.

[0011] One end of the lower push rod is connected to the inner panel of the car door, and its opening and closing can be controlled by a limit lock.

[0012] The limiting lock includes a lower limiting lock fixing part fixed to the inner panel of the door, and a lower limiting lock movable part that is controllably connected to the lower limiting lock fixing part for opening and closing.

[0013] The edge of the inner door panel is rotatably connected to the edge of the outer door panel via a pivot. The pivot is provided with spring coils supporting the inner and outer door panels. The inner door panel includes a first inner panel arranged along the thickness direction of the door and a second inner panel arranged along the height direction of the door. The first inner panel is provided above and below the second inner panel. The first and second inner panels are rotatably connected by a pivot. The pivot is provided with spring coils supporting the first and second inner panels.

[0014] A storage box is provided below the second inner panel. The storage box is connected to the second inner panel via a pivot. A spring ring is provided on the pivot to support the second inner panel and the storage box.

[0015] The inner panel of the door is equipped with a telescopic track for the inner opening handle to avoid the inner opening handle.

[0016] The inner handle has a folding door panel lock / unlock button for controlling the limit lock connection, and a folding door panel lock / close button for controlling the limit lock opening.

[0017] Compared with the prior art, the present invention has the following advantages: The foldable door structure of the present invention can realize the folding of the inner panels of the four doors inside the vehicle. After the car is parked and the doors are opened, the folding and retraction are achieved, thereby increasing the space for people to get out of the car and opening the doors. It ensures that in a relatively narrow space, after the car doors are opened, the space of the interior door trim panels can be compressed, thereby increasing the space for getting out of the car and facilitating people to get in and out of the car. It has strong practicality and good application prospects. Attached Figure Description

[0018] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein:

[0019] Figure 1 This is a schematic diagram of the front structure of the vehicle door in the closed state according to the present invention;

[0020] Figure 2 This is a schematic diagram of the front structure of the vehicle door in the open state of the present invention;

[0021] Figure 3 This is a schematic diagram of the side structure of the vehicle door in the closed state according to the present invention;

[0022] Figure 4 This is a schematic diagram of the front structure of the vehicle door in the closed state of the present invention.

[0023] The markings in the diagram are as follows: 1. Inner folding spring coil of the door panel; 2. Fixing point of the inner door panel spring coil; 3. Outer folding spring coil of the door panel; 4. Inner folding spring coil near the inward-opening handle of the door panel; 5. Folding spring coil at the storage box; 6. Outer folding spring coil near the bottom of the door of the door panel; 7. Storage box; 8. Bottom of the inner door panel; 9. Upper part of the inner door panel; 10. Telescopic track of the inward-opening handle; 11. Folding door panel lock / unlock button; 12. Folding door panel lock / lock button; 13. Inward-opening handle; 14. Folding spring coil at the inward-opening handle; 15. 16. Door and window control telescopic cable, 17. Speaker telescopic cable, 18. Door lock control telescopic cable, 19. Door handle, 20. Door inner panel control point, 21. Upper rotating shaft, 22. Telescopic door panel push shaft, 23. Upper push rod, 24. Lower push rod, 25. Lower limit lock moving part, 26. Lower limit lock fixed part, 27. Lower part of bow-shaped rod, 28. Upper part of bow-shaped rod, 29. Door hinge, 30. Hinge positioning shaft. Detailed Implementation

[0024] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0025] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0026] This invention relates to a door structure with a foldable inner door panel, such as... Figure 1 , 2 As shown in Figures 3 and 4, the vehicle includes an outer door panel and an inner door panel rotatably connected to the outer door panel. One end of the door hinge 29 is connected to the vehicle body frame, and the other end is connected to the inner door panel. This invention enables the folding of the four inner door panels inside the vehicle. After the vehicle is parked and the doors are opened, the door hinge 29 drives the inner panels to fold and retract. This increases the space for passengers to exit the vehicle and ensures that even in relatively confined spaces, opening the doors compresses the space of the interior door trim panels, thereby increasing the space available for exiting the vehicle.

[0027] In this invention, the door hinge 29 is connected to the inner door panel via an upper push rod 23 and a lower push rod 24. One end of the upper push rod 23 is connected to the inner door panel control point 20 located on the inner door panel via an arc-shaped rod. The arc-shaped rod includes an upper part 28 and a lower part 27, which are bent at a certain angle. The corner of the upper part 28 and the lower part 27 is rotatably connected to the inner door panel via an upper rotating shaft 21.

[0028] In this invention, one end of the lower push rod 24 is controllably connected to the inner door panel via a limit lock. The limit lock includes a lower limit lock fixing part 26 fixed to the inner door panel, and a lower limit lock movable part 25 controllably connected to the lower limit lock fixing part 26. The lower limit lock fixing part 26 contains a built-in motor and a telescopic spring. The folding of the inner door panel can be initiated as needed, and the opening and closing of the lower limit lock fixing part 26 and the lower limit lock movable part 25 are controlled by the folding door panel unlock button 11 and the folding door panel lock button 12.

[0029] In this invention, such as Figure 3 , 4 As shown, the edge of the inner door panel is rotatably connected to the edge of the outer door panel via a pivot. A spring ring is mounted on the pivot to support the inner and outer door panels. The inner door panel includes a first inner panel arranged along the door thickness direction and a second inner panel arranged along the door height direction. The first inner panel is positioned above and below the second inner panel, and the first and second inner panels are rotatably connected via a pivot. A spring ring is mounted on the pivot to support both the first and second inner panels. A storage box is located below the second inner panel, and the storage box is connected to the second inner panel via a pivot. A spring ring is mounted on the pivot to support both the second inner panel and the storage box. The pivot enables the rotatable connection of the inner door panel. When the door is opened, the door hinge, through the upper push rod 23, the lower push rod 24, the bow-shaped rod, and the limit lock, connects and drives the inner door panel to move upward and inward synchronously, reducing the door thickness and increasing the exit space.

[0030] In this invention, the inner door panel is provided with an inward-opening handle telescopic track 10 to avoid obstructing the inward-opening handle. This ensures that the inward-opening handle remains stationary when the inner door panel moves, preventing interference with normal door opening operations. In this invention, the control wiring harnesses with electrical functions inside the inner door panel extend with the upward stretching of the door panel. The door and window control telescopic cable 16, speaker telescopic cable 17, and door lock control telescopic cable 18 have reserved extension lengths to accommodate the overall upward folding of the door panel without affecting the wiring harness arrangement of electrical components inside the door. This folding process compresses the door panel space, reduces the thickness of the inner door panel, and increases the space for passengers to exit the vehicle.

[0031] In embodiments of the present invention, such as Figure 2 , 4 As shown, according to the structure of the inner panel, there are also pivot connections at the top and bottom near the door handle, which are supported by spring rings, leaving room for movement and facilitating folding.

[0032] In this invention, the inner handle 13 has a folding door panel unlocking button 11 on one side to control the connection of the limit lock, and a folding door panel locking button 12 to control the opening of the limit lock. The folding door panel unlocking button 11 and the folding door panel locking button 12 are electrically connected to the vehicle controller to activate and control the connection and disconnection of the limit lock.

[0033] The present invention relates to a foldable door structure for the inner panels of four doors, which allows for folding of the inner panels of all four doors. After the car is parked and the doors are opened, the panels fold and retract, thereby increasing the space for passengers to get out and open the doors. This ensures that even in relatively narrow spaces, the space of the interior door trim panels can be compressed after the doors are opened, thus increasing the space for getting out of the car and facilitating passengers to get in and out. The invention has strong practicality and good application prospects.

[0034] This invention relates to a foldable door structure with a foldable inner door panel. The folding door panel unlock button 11 is a switch to initiate the folding of the door panel, similar to the logic of a door unlocking device. The lower limit lock includes a movable part and a fixed part. When the unlock signal of the folding door panel unlock button 11 is activated, the movable part 25 and the fixed part 26 of the lower limit lock are rigidly connected. Thus, when the owner unlocks and pushes open the car door, the door hinge 29 is pulled out from the direction the door is pushed open, simultaneously driving the rigidly connected lower limit lock, which in turn folds the door panel. This door panel folding method initiates the folding of the door panel through the physical lever pulling principle of the door hinge. Similarly, when restoring, as long as the car door is closed, the hinge moves into the interior of the door, causing the door panel to return to its folded-out state.

[0035] When the door panel folding switch is closed, the lower limit lock movable part 25 and the lower limit lock fixed part 26 are no longer rigidly connected. In this way, each time the door is opened, as the door hinge 29 is pulled open, the lower limit lock movable part 25 will not pull the lower limit lock fixed part 26 to work together, and the entire inner door panel will not start to fold.

[0036] When the car arrives at the parking space, the owner's car door opening space is small, making it inconvenient to get out of the car. When it is necessary to fold the door panel, the folding door panel lock and unlock button is activated to release the limit control of the built-in motor and telescopic spring of the lower limit lock fixing part 26. In this way, the passenger can open the car door by pulling the inner opening handle 13, and at the same time, the inner door panel can be folded.

[0037] The execution method is as follows: Figure 2As shown, the door leaves the initial position of the door hinge 29 and hinge positioning shaft 30, and pushing the door handle 19 opens the door. Simultaneously, under the stretching action of the door hinge 29, the upper push rod 23 and lower push rod 24 are pulled, causing the lower limit lock movable part 25 to disengage from the lower limit lock fixed part 26. The lower limit lock fixed part 26 has a built-in motor, and the end of the motor shaft has a limit hook that limits the lower limit lock movable part 25. A telescopic spring is provided on the shaft, and the unlocking and locking of the lower limit lock movable part 25 can be controlled by the folding door panel lock / unlock button 11. A wiring harness connects to the lower limit lock movable part 25, and the opening and closing mechanism is achieved through current. When powered on, the lower limit lock movable part 25 is unlocked; when powered off, it re-locks. The locking and unlocking structure here can be similar to the door unlocking and locking structure on existing vehicles. The upper push rod 23 pulls the telescopic door panel push shaft 22, and the upper part 28 of the bow rod pulls the lower part 27 of the bow rod through the upper rotating shaft 21, which drives the control point 20 of the inner door panel to push the entire door panel upward.

[0038] like Figure 4 As shown, the outer folding spring ring 3 of the synchronous portal panel, the inner folding spring ring 4 near the inward opening handle of the portal panel, and the folding spring ring 5 at the storage box are in an extended state under the elastic force of the spring rings; among them, the inner folding spring ring 1 of the portal panel, the outer folding spring ring 6 near the bottom of the door of the portal panel, and the folding spring ring 14 at the inward opening handle are in a contracted state under the overall upward force of the spring ring 15 near the bottom center of the portal panel and near the storage box.

[0039] Synchronously, under the upward force, the entire door panel moves upward. The inner handle 13 lever is positioned within the inner handle telescopic track 10, ensuring that the inner handle lever remains fixed in its position inside the door, thus achieving the overall folding of the door panel. Simultaneously, the control wiring harness with electrical functions located inside the inner door panel folds upward. The door and window control telescopic cable 16, speaker telescopic cable 17, and door lock control telescopic cable 18, combined with the reserved telescopic length of the wiring harness, work in conjunction with the overall upward folding of the door panel. This folding process compresses the door panel space, reduces the thickness of the inner door panel, and increases the space for passengers to exit the vehicle.

[0040] When the car door is closed, such as Figure 1 , 3As shown, under the pushing action of the door hinge 29, the upper push rod 23 and the lower push rod 24 are pushed, causing the lower limit lock movable part 25 to engage with the lower limit lock fixed part 26 in a fixed position. If the vehicle is locked, after receiving a remote locking signal through the door lock button 12, the limiting function of the lower limit lock fixed part 26 is activated, thus achieving the fixed limiting effect on the lower door panel. At the same time, pulling the upper push rod 23 pushes the telescopic door panel push shaft 22 to apply a pushing force to the upper part 28 of the bow-shaped rod, causing the upper rotating shaft 21 to push the lower part 27 of the bow-shaped rod, which in turn drives the inner door panel control point 20 to push the entire door panel downward, realizing the unfolded state of the door panel. Among them, the synchronous door panel outward folding spring ring 3, the door panel inner near the inward opening handle folding spring ring 4, and the storage box folding spring ring 5 achieve the retracted state under the action of the spring ring elasticity. The springs 1 inside the door panel, 6 outside the door panel near the bottom of the door, 14 at the inside handle, and 15 inside the door panel near the bottom and middle of the storage box are all in an extended state under the action of the overall downward force.

[0041] Additionally, when the folding door panel lock / unlock button 11 is activated when exiting the vehicle, the door panel will be in the folding state by default when unlocking the vehicle to get back in after locking the car and leaving. If the folding door panel lock / unlock button 11 is not activated before exiting the vehicle, the door panel will not fold when the vehicle is unlocked from the outside.

[0042] The present invention relates to a foldable door structure for the inner panels of four doors, which allows for folding of the inner panels of all four doors. After the car is parked and the doors are opened, the panels fold and retract, thereby increasing the space for passengers to get out and open the doors. This ensures that even in relatively narrow spaces, the space of the interior door trim panels can be compressed after the doors are opened, thus increasing the space for getting out of the car and facilitating passengers to get in and out. The invention has strong practicality and good application prospects.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] The present invention has been described above by way of example with reference to the accompanying drawings. However, the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention or any direct application to other situations shall fall within the protection scope of the present invention.

Claims

1. A door structure with a foldable inner door panel, characterized in that: The system includes an outer door panel and an inner door panel rotatably connected to the outer door panel. One end of a door hinge is connected to the vehicle body frame, and the other end is connected to the inner door panel. The door hinge is connected to the inner door panel via an upper push rod and a lower push rod. One end of the upper push rod is connected to a door panel control point located on the inner door panel via a bow-shaped rod. The bow-shaped rod includes an upper part and a lower part, which form a certain bending angle. The corner of the upper and lower parts of the bow-shaped rod is connected via the upper push rod. A rotating shaft is rotatably connected to the inner door panel; the edge of the inner door panel is rotatably connected to the edge of the outer door panel via the rotating shaft, and a spring ring is provided on the rotating shaft to support the inner door panel and the outer door panel; the inner door panel includes a first inner panel arranged along the thickness direction of the door and a second inner panel arranged along the height direction of the door, with the first inner panel provided above and below the second inner panel, and the first inner panel and the second inner panel are rotatably connected by a rotating shaft, and a spring ring is provided on the rotating shaft to support the first inner panel and the second inner panel.

2. The foldable door structure with an inner door panel according to claim 1, characterized in that: One end of the lower push rod is connected to the inner panel of the car door, and its opening and closing can be controlled by a limit lock.

3. The foldable door structure with an inner door panel according to claim 2, characterized in that: The limiting lock includes a lower limiting lock fixing part fixed to the inner panel of the door, and a lower limiting lock movable part that is controllably connected to the lower limiting lock fixing part for opening and closing.

4. The foldable door structure with an inner door panel according to any one of claims 1 to 3, characterized in that: A storage box is provided below the second inner panel. The storage box is connected to the second inner panel via a pivot. A spring ring is provided on the pivot to support the second inner panel and the storage box.

5. The foldable door structure with an inner door panel according to claim 4, characterized in that: The inner panel of the car door is equipped with a telescopic track for the inner door handle to avoid the inner door handle.

6. The foldable door structure with an inner door panel according to claim 5, characterized in that: The inner handle has an open button for controlling the folding door panel connected to the limit lock, and a close button for controlling the folding door panel to be closed.

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