A car trunk and its car

Abstract

This invention discloses an expandable car trunk and the corresponding vehicle. Driven by a single motor, the trunk carpet can be raised, extended, and retracted. It features low control costs, high reliability, and easy trunk expansion. Even with luggage on the carpet, the carpet can extend normally outside the vehicle. The lifting mechanism minimizes space encroachment under the carpet, allowing for improvements to existing vehicle models. Combined with a door-shaped roller blind, a waterproof zipper connects the extended carpet to create a sealed space, effectively expanding the trunk's capacity. Connecting the carpet to the tailgate with a pull cord enhances the load-bearing capacity of the suspended carpet. Furthermore, the carpet features a removable flip-top design in the middle, ensuring uninterrupted use of the storage compartment beneath it.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to an expandable car trunk and the car thereof. Background Technology

[0002] As more and more users travel by car, many choose to fold down the rear seats for rest. However, traditional car trunk space is limited, creating a significant demand for expandable space. Current car trunk expansion structures are often complex, significantly impacting the traditional car body structure, and after being folded down, they greatly encroach on trunk space and are not conducive to expansion operations.

[0003] For example, Chinese patent CN117446022A discloses a vehicle body space expansion module. This module is a hollow frame with one side having an inwardly folded edge that is fixedly connected to the vehicle body, and the other side having an openable panel. The module frame contains neatly arranged folding layers, which are linked to the panel. Opening the panel allows the folding layers to be pulled open, expanding the interior space. This significantly impacts traditional vehicle body structures and has low versatility for modifications.

[0004] For example, Chinese patent CN218505778U discloses a trunk floor for automobiles and an automobile. The trunk floor includes a floor body and a floor extension. The floor body is installed in the trunk of the automobile body. The front end of the floor extension is rotatably connected to the rear end of the floor body around a first axis, so that the floor extension can switch between a folded position and an unfolded position. If there are miscellaneous items on the carpet, the trunk needs to be emptied before it can be unfolded and used, which is inconvenient.

[0005] For example, Chinese patent CN217672403U discloses a rear extension device for an SUV, including an extension box, a slide rail, and an extension seat. The extension box is installed inside the SUV's trunk. The slide rail is located on both sides of the extension box and installed on the inner walls of both sides of the SUV. The extension box has sliding strips on both sides corresponding to the slide rail, so that the extension box can move along the slide rail and be stored in the SUV's trunk or extend outward from the SUV's trunk outlet. The extension seat is installed at the rear seat of the SUV and replaces the original SUV's rear seat. The extension seat is a folding seat, with one end hinged to the bottom of the inner end of the extension box; when stored, it takes up a lot of trunk space. Summary of the Invention

[0006] In view of the shortcomings of existing technology, the present invention provides a car trunk and the car thereof, which has high versatility for modification, does not encroach on the trunk space, does not affect the normal use of the trunk, and the trunk expansion operation is simple.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0008] A car trunk includes a movable carpet disposed within the trunk, a lifting structure and a sliding structure, and a drive structure for moving the sliding structure. The movable carpet is disposed on the lifting structure, and the lifting structure and the sliding structure are associated. A pull cord retractor is provided on the tailgate of the car, and the end of the movable carpet is provided with a fixing structure for connecting to the pull cord of the pull cord retractor.

[0009] The movable carpet has an openable carpet flap.

[0010] The car's trunk has a fold-down storage box located beneath the movable carpet.

[0011] The tailgate frame is equipped with a door-shaped roller shutter, and the edge of the movable carpet and the pulled-out roller shutter are connected by a zipper.

[0012] The drive structure includes a motor, a first lead screw, a second lead screw, and a clutch mechanism located between the first and second lead screws. The motor and the end of the first lead screw are connected. The lifting structure is a push mechanism that can move along the first lead screw. The lower part of the movable carpet is provided with a slide rail structure, and a slidable slider is provided on the slide rail structure. A second lead screw nut is provided on the second lead screw, and the second lead screw nut and the slider are connected by a movable connecting rod.

[0013] The clutch mechanism includes a first bevel gear, a spring, a second bevel gear, a third bevel gear, and a rotating rod. The first bevel gear is mounted on a first lead screw, and the second bevel gear is mounted on a second lead screw. The lower part of the movable carpet is provided with a cam structure. When the movable carpet is in a horizontal reset state, the spring pushes the third bevel gear to connect the first and second bevel gears. When the movable carpet moves outward, the cam pushes the rotating rod to compress the spring, causing the third bevel gear to lift up, thus separating the first and second bevel gears.

[0014] The slide rail structure includes a pair of horizontal slide rails arranged side by side, with the pair of horizontal slide rails respectively located on both sides of the bottom surface of the movable carpet.

[0015] The pushing mechanism includes a first lead screw nut, a guide block, a movable column, and an L-shaped slide groove. The first lead screw is helically connected to the first lead screw nut. The guide block is located on the first lead screw nut and has an inclined through groove. The L-shaped slide groove is located on the vehicle body structure. One end of the movable column passes through the through groove of the guide block and is inserted into the L-shaped slide groove, while the other end is connected to the movable carpet.

[0016] One side of the L-shaped chute is set horizontally, and the other side is set vertically downward, with the horizontal direction facing the rear of the vehicle.

[0017] A car, including the aforementioned car trunk.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] This expandable car trunk has a reasonable structural design. Driven by a single motor, it can lift, extend, and retract the trunk carpet. It has low control costs, high reliability, and easy trunk expansion operation. Even when there is luggage on the carpet, it can still extend out of the vehicle normally. The lifting mechanism has minimal encroachment on the space under the carpet and can be improved on existing models. With the door-shaped roller shutter, it can be connected to the extended carpet via a waterproof zipper to form a sealed space, which can effectively expand the trunk space. Connecting the carpet to the tailgate with a pull rope can effectively improve the load-bearing capacity of the suspended carpet. Moreover, the carpet has a movable flip-top design in the middle, which does not affect the use of the storage box under the carpet. Attached Figure Description

[0020] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0021] Figure 1 This is a schematic diagram of the trunk storage state according to the present invention.

[0022] Figure 2 This is a schematic diagram of the trunk in the unfolded state of the present invention.

[0023] Figure 3 This is a top view of the trunk of the present invention.

[0024] Figure 4 This is a cross-sectional view of the trunk in its reset state according to the present invention.

[0025] Figure 5 This is a cross-sectional view of the trunk in the raised position according to the present invention.

[0026] Figure 6 This is a cross-sectional view of the trunk of the present invention in the extended state.

[0027] Figure 7 This is a schematic diagram of the lifting mechanism of the present invention.

[0028] Figure 8 This is a schematic diagram of the horizontal movement of the pushing mechanism of the present invention.

[0029] Figure 9 This is a schematic diagram of the clutch mechanism engagement of the present invention.

[0030] Figure 10 This is a schematic diagram of the clutch mechanism disconnection of the present invention.

[0031] In the picture:

[0032] 1. Rear seats; 2. Retractable carpet; 3. Fold-down lower storage box; 4. Luggage; 5. Tailgate; 6. Pull cord; 7. Pull cord fixing point; 8. Door sill pressure plate; 9. Carpet cover; 10. Slide rail structure; 11. Pull cord retractor; 12. Stepper motor; 13. Push-top mechanism; 14. First lead screw; 15. Horizontal slide rail; 16. Clutch mechanism; 17. Second lead screw nut; 18. Slider; 19. Tailgate frame; 20. Electric push rod; 21. Electric locking ring; 22. First lead screw nut; 23. Guide block; 24. Movable column; 25. L-shaped slide groove; 26. First bevel gear; 27. Spring; 28. Third bevel gear; 29. ​​Second lead screw; 30. Second bevel gear; 31. Rotating rod. Detailed Implementation

[0033] 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.

[0034] like Figures 1 to 10 As shown, the expandable car trunk includes a movable carpet 2, a lifting structure and a sliding structure, as well as a drive structure for moving the sliding structure. The movable carpet 2 is located inside the car trunk behind the rear seat 1. The movable carpet can be lifted and extended from above the door sill of the car tailgate. Since the movable carpet moves as a whole, it can extend out of the car normally to form an expanded space even when luggage 4 is placed on the carpet.

[0035] The movable carpet 2 is mounted on a lifting structure, which is linked to a sliding structure. A pull cord retractor 11 is installed on the tailgate 5 of the vehicle. The end of the movable carpet has a fixing structure for connecting to the pull cord of the pull cord retractor. Preferably, the pull cord retractors are a pair arranged opposite each other. Two pull cord fixing points 7 are respectively provided on both sides of the end of the movable carpet near the door sill plate 8. These fixing points can be fixing holes or fixing rings. Connecting the movable carpet to the tailgate via the pull cord 6 after it extends can improve the load-bearing capacity of the suspended carpet.

[0036] like Figure 1 and Figure 2 As shown, the movable carpet 2 has a through hole in the middle, and a carpet flap 9 that can be opened is provided on the movable carpet corresponding to the through hole. Preferably, the through hole is a square through hole with the top and bottom facing each other. One side of the carpet flap is connected to the edge of the through hole by a hinge or a flexible strip. The carpet flap can be flipped open to facilitate the retrieval and placement of items under the carpet.

[0037] Furthermore, a fold-down lower storage box 3 is provided under the movable carpet in the trunk of the car. The fold-down lower storage box is equipped with a through hole and a carpet cover. When the movable carpet is in the initial state in the trunk of the car, the storage box can be opened through the through hole after the carpet cover is opened. When the movable carpet moves backward and extends, the rear seats are folded forward, and the cover of the fold-down lower storage box is flipped open to create a larger expansion space.

[0038] The tailgate frame 19 of the tailgate 5 is equipped with a door-shaped roller shutter. The edge of the movable carpet and the pulled-out roller shutter are connected by a zipper. That is, the movable carpet extends out of the tailgate. By pulling the cord to connect the carpet to the tailgate, the load-bearing capacity of the suspended carpet can be improved. At this time, the door-shaped roller shutter installed on the tailgate frame is pulled out. The door-shaped roller shutter is connected to the movable carpet to form a closed space, thereby expanding the usable space of the trunk.

[0039] The sliding structure can be a lead screw structure, and the drive structure includes a motor. A set of guide rods arranged parallel to the lead screw are located in the trunk. A horizontally arranged sliding plate is mounted on the lead screw, with the sliding plate helically engaged with the lead screw and clearance-fitted with the guide rods. The end of the lead screw is connected to the motor's shaft, allowing the motor to drive the sliding plate to move along the vehicle's front-to-back direction. The lifting structure is a scissor lift structure, mounted on the sliding plate, with a drive motor on the sliding plate for raising and lowering the scissor lift structure. The lower part of the movable carpet near the rear seat end is connected to the top of the scissor lift structure. When in use, the tailgate is opened via an electric push rod. At this time, the electronically controlled locking ring tightens to fix the electric push rod. The drive motor of the lifting structure operates to raise the scissor lift structure, thereby raising the movable carpet. When the movable carpet is raised above the tailgate sill plate, the motor drives the lead screw to rotate, driving the sliding plate to move backward, thus extending the movable carpet. The end of the movable carpet is connected to the tailgate via a pull rope, thus forming an extended space. This meets the user's need for expanding the trunk space. It has a simple structure, good load-bearing capacity, is easy to use, and has high versatility for modification.

[0040] The above-mentioned drive scheme uses two motors; the present invention preferably uses a single stepper motor to control the lifting and extension; the lifting, extension and resetting of the trunk carpet can be achieved by a single motor drive, which has low control cost and high reliability; and the structure is compact, does not occupy the trunk space and does not affect the normal use of the trunk.

[0041] like Figures 4 to 10 As shown, the preferred single-motor drive scheme of the present invention is as follows:

[0042] The drive structure includes a stepper motor 12, a first lead screw 14, a second lead screw 29, and a clutch mechanism 16 disposed between the first lead screw and the second lead screw. The stepper motor, the first lead screw, and the second lead screw are arranged sequentially from front to back at the bottom of the trunk. The rotating shaft of the stepper motor is connected to the front end of the first lead screw, and the rear end of the first lead screw and the front end of the second lead screw are connected through the clutch mechanism.

[0043] The lifting structure is a push mechanism 13 that can move along the first lead screw. The lower part of the movable carpet is provided with a slide rail structure 10, and below the slide rail structure is a slider 18 that can slide back and forth on the slide rail. The second lead screw is provided with a second lead screw nut 17, and the second lead screw nut and the slider are connected by a movable connecting rod. Furthermore, a support block is provided behind the second lead screw. The support block is fixed to the bottom of the trunk. The support block and the slider are also movably connected by a connecting rod. That is, the lower end of the connecting rod is hinged to the support block, and the upper end of the connecting rod is hinged to the lower part of the slider. By setting up a connecting rod structure for support, the structure is stable and reliable.

[0044] Preferably, the slide rail structure includes a pair of horizontal slide rails 15 arranged side by side, with the horizontal slide rails positioned in the front-to-back direction. The pair of horizontal slide rails are respectively located on both sides of the bottom surface of the movable carpet, and the structure is stable and reliable.

[0045] like Figure 7 and Figure 8 As shown, the preferred pushing mechanism includes a first lead screw nut 22, a guide block 23, a movable column 24, and an L-shaped slide 25. The first lead screw is helically connected to the first lead screw nut 22. The guide block 23 is mounted on the first lead screw nut 22 and has an inclined through groove. The L-shaped slide 25 is mounted on the vehicle body structure. One end of the movable column passes through the through groove of the guide block and inserts into the L-shaped slide, while the other end is connected to the movable carpet. Furthermore, one side of the L-shaped slide is horizontally positioned, and the other side is vertically downward, with the horizontal direction facing the rear of the vehicle. Through the constraint of the through groove inserted into the L-shaped slide, when the first lead screw rotates, the movable carpet can move vertically first and then horizontally.

[0046] like Figure 9 and Figure 10As shown, the preferred clutch mechanism includes a first bevel gear 26, a spring 27, a second bevel gear 28, a third bevel gear 30, and a rotating rod 31. The first bevel gear 26 is mounted on the first lead screw 14, and the second bevel gear 30 is mounted on the second lead screw. The lower part of the movable carpet 2 is provided with a cam structure. When the movable carpet is in the horizontal reset state, the spring pushes the third bevel gear to connect the first bevel gear and the second bevel gear. When the movable carpet moves outward, the cam pushes the rotating rod to compress the spring, causing the third bevel gear to lift up, thus separating the first bevel gear and the second bevel gear. At this time, when the movable carpet continues to move outward, the second bevel gear will not rotate. When the motor reverses and the movable carpet returns to the horizontal reset point, the clutch mechanism re-engages, thereby driving the movable carpet to vertical reset.

[0047] In this invention, a slide rail is arranged on each side of the bottom surface of the movable carpet. A slider is slidably mounted on the slide rail. The slider is rotatably connected to the second lead screw nut through a connecting rod. A stepper motor is provided on the carriage under the movable carpet. One end of the first lead screw is connected to the stepper motor. The rotation of the stepper motor drives the first lead screw to rotate. The first lead screw passes through the push mechanism, which is connected to the movable carpet. The other end of the first lead screw is connected to the second lead screw through a clutch mechanism. Two pull rope fixing points are provided on both sides of the front end of the movable carpet. Two pull rope retractors are provided on the tailgate. The pull rope retractors are connected to the two fixing points through pull ropes.

[0048] When in use, the tailgate is opened via the electric push rod 20. At this time, the electric locking ring 21 tightens to fix the electric push rod. The stepper motor rotates, which first drives the push mechanism to move vertically upward. At the same time, the clutch mechanism is in the closed state. The first lead screw also drives the second lead screw to rotate, driving the second lead screw nut to tighten, thereby driving the slider to move vertically upward as well. At this time, the movable carpet will be raised to the designated position. The stepper motor continues to rotate, the clutch mechanism is disengaged, and the first lead screw will drive the push device to move horizontally. The movable carpet extends out of the tailgate. Connecting the carpet to the tailgate with a pull rope can increase the load-bearing capacity of the suspended carpet. At this time, pull out the door-shaped roller shutter installed on the tailgate frame. The door-shaped roller shutter is connected to the movable carpet to form a sealed space, thereby expanding the usable space of the trunk. When the motor reverses, the movable carpet can be reset. The carpet has a movable flip-top design in the middle. When reset, the storage box below can be opened for use.

[0049] This invention enables the lifting, extension, and resetting of the trunk carpet using a single motor drive. It boasts low control costs and high reliability, allowing the carpet to extend normally even when luggage is placed on it. The lifting mechanism minimizes the space encroachment on the area beneath the carpet, allowing for improvements to existing vehicle models. Combined with a door-shaped roller blind, the carpet can be connected to the extended area via a waterproof zipper to create a sealed space, effectively expanding the trunk's capacity. Connecting the carpet to the tailgate via a pull cord enhances the load-bearing capacity of the suspended carpet. Furthermore, the carpet features a removable flip-top design in the middle, ensuring uninterrupted use of the storage compartment beneath it.

[0050] The above description is merely an illustration of preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0051] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A car trunk, comprising a movable carpet disposed within the trunk, characterized in that: It also includes a lifting structure and a sliding structure, as well as a drive structure for driving the sliding structure to move. The movable carpet is mounted on the lifting structure, and the lifting structure and the sliding structure are associated. A pull cord retractor is provided on the tailgate of the car, and the end of the movable carpet is provided with a fixing structure for connecting to the pull cord of the pull cord retractor. The drive structure includes a motor, a first lead screw, a second lead screw, and a clutch mechanism located between the first and second lead screws. The motor and the end of the first lead screw are connected. The lifting structure is a push mechanism that can move along the first lead screw. The lower part of the movable carpet is provided with a slide rail structure, on which a slidable slider is provided. A second lead screw nut is provided on the second lead screw, and the second lead screw nut and the slider are connected by a movable connecting rod. The clutch mechanism includes a first bevel gear, a spring, a second bevel gear, a third bevel gear, and a rotating rod. The first bevel gear is located on the first lead screw, and the second bevel gear is located on the second lead screw. The lower part of the movable carpet is provided with a cam structure. When the movable carpet is in its horizontal reset state, the spring pushes the third bevel gear, connecting the first and second bevel gears. When the movable carpet moves outward, the cam pushes the rotating rod to compress the spring, causing the third bevel gear to lift and separating the first and second bevel gears. The pushing mechanism includes a first lead screw nut, a guide block, a movable column, and an L-shaped slide groove. The first lead screw is helically connected to the first lead screw nut. The guide block is located on the first lead screw nut and has an inclined through groove. The L-shaped slide groove is located on the vehicle body structure. One end of the movable column passes through the through groove of the guide block and inserts into the L-shaped slide groove, while the other end is connected to the movable carpet.

2. The automobile trunk as described in claim 1, characterized in that: The movable carpet has an openable carpet flap.

3. The automobile trunk as described in claim 1, characterized in that: The car's trunk has a fold-down storage box located beneath the movable carpet.

4. The automobile trunk as described in claim 1, characterized in that: The tailgate frame is equipped with a door-shaped roller shutter, and the edge of the movable carpet and the pulled-out roller shutter are connected by a zipper.

5. The automobile trunk as described in claim 1, characterized in that: The slide rail structure includes a pair of horizontal slide rails arranged side by side, with the pair of horizontal slide rails respectively located on both sides of the bottom surface of the movable carpet.

6. The automobile trunk as described in claim 1, characterized in that: One side of the L-shaped chute is set horizontally, and the other side is set vertically downward, with the horizontal direction facing the rear of the vehicle.

7. A car, characterized in that: Including the vehicle trunk as described in any one of claims 1 to 6.

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