Backpack for storing in the rear of a car

Abstract

The utility model relates to a kind of storage knapsack of automobile tail, including knapsack body, door panel and slow descent device, storage cavity is equipped in the knapsack body, the door panel is hinged in the knapsack body, the door panel rotates relative to the knapsack body with hinge as the rotation center, to open or close the storage cavity;The slow descent device is arranged in the storage cavity, one end of the slow descent device is connected with the storage cavity, the other end of the slow descent device is connected with the door panel, the slow descent device is used to slow down the descending speed of the door panel, improves the use safety and convenience.

Description

Technical Field

[0001] This utility model relates to a storage backpack at the rear of a car. Background Technology

[0002] In existing technologies, the rear of automobiles often uses storage boxes or compartments located at the rear of the vehicle. The storage space is formed by the cooperation of the box body and the box door. For example, in the bottom-opening box door structure, the box door is connected to the box body by a pull strap or pull cable, and the opening of the box door is controlled by a mechanical lock. It can only achieve a relatively simple storage function, but it has problems such as limited integrated functions, the pull strap cannot effectively limit the downward speed of the box door after the door lock is opened, the box door is prone to falling out when it opens quickly, and the box door is difficult to keep stable in the open position after it is opened, and items are prone to slipping when placing or taking out items. Utility Model Content

[0003] The purpose of this utility model is to provide a storage backpack for the rear of a car that effectively slows down the descent speed of the door panel during the opening process, while ensuring that the door panel remains stably in the predetermined opening position after opening, thereby improving safety and convenience of use.

[0004] The purpose of this utility model is achieved as follows: A storage backpack for the rear of a car includes a backpack body, a door panel, and a slow-descent device. The backpack body has a storage cavity. The door panel is hinged to the backpack body and rotates relative to the backpack body about the hinge point as a rotation center to open or close the storage cavity. The slow-descent device is disposed in the storage cavity, with one end connected to the storage cavity and the other end connected to the door panel. The slow-descent device is used to slow down the descent speed of the door panel.

[0005] By incorporating a storage cavity within the backpack body, hinged to the door panel, and arranging a slow-descent device within the storage cavity, with one end connected to the storage cavity and the other end connected to the door panel, the slow-descent device provides damping and support during the door panel's rotation relative to the backpack body, using the hinge point as the rotation center. This effectively slows down the door panel's descent speed, preventing items from falling out or colliding with the user due to rapid descent. Furthermore, it provides support and limits the door panel when it opens to a predetermined angle, ensuring it remains stably open. This allows users to easily access items with both hands, thus solving the technical problems of uncontrollable descent speed, easy item fall, and difficulty in maintaining a stable open position in existing automotive rear storage devices. This improves safety and convenience.

[0006] The objective of this utility model can also be achieved by the following technical measures: Furthermore, it also includes a lock, which comprises a lock case, a lock hook, a mechanical unlocking module, and an electronic unlocking module. The lock is mounted on the backpack body. The lock case has a lock opening. The mechanical unlocking module, the electronic unlocking module, and the lock hook are all located inside the lock case. The mechanical unlocking module and the electronic unlocking module are respectively connected to the lock hook. When either the mechanical unlocking module or the electronic unlocking module is working, it can drive the lock hook to move. A latch is provided on the door panel. When the door panel closes the storage cavity, the latch passes through the lock opening and inserts into the lock case. When either the mechanical unlocking module or the electronic unlocking module is working, it drives the lock hook to move, so that the lock hook and the latch are locked, or the lock hook and the latch are separated to unlock.

[0007] By incorporating a lock on the backpack body, the lock includes a hook, a mechanical unlocking module, and an electronic unlocking module housed within the lock housing. The mechanical and electronic unlocking modules are connected to the hook, and a latch is installed on the door panel. When the door panel closes the storage cavity, the latch passes through the lock opening and inserts into the lock housing. Both the mechanical and electronic unlocking modules can activate the hook, causing it to engage or disengage with the latch, thus locking and unlocking the door panel. This design allows for reliable unlocking via mechanical means and convenient electronic control, effectively improving the security and flexibility of the locking structure. Even in the event of a vehicle power outage or electronic system malfunction, the backpack can still be opened normally via the mechanical unlocking module. This solves the technical problems of existing locks, such as a single unlocking method, inability to unlock properly under power failure, and low locking reliability, thus enhancing the security and convenience of the car rear storage backpack in actual use.

[0008] Furthermore, a switch is provided on the side wall of the backpack body, and the switch is connected to the electronic unlocking module via a signal line. A pull rope is provided inside the backpack body, and the pull rope is connected to the mechanical unlocking module.

[0009] By installing a switch on the side wall of the backpack body that is connected to the electronic unlocking module via a signal line, and simultaneously installing a pull cord inside the backpack body that is connected to the mechanical unlocking module, users can control the electronic unlocking module through the external switch, and also directly drive the mechanical unlocking module to unlock in case of electronic system malfunction or power failure by pulling the cord. This achieves compatibility and backup for both electronic and mechanical unlocking methods, solving the technical problems of existing car rear storage backpack locks, such as the single unlocking method, inability to open in time in case of power failure or electronic unlocking failure, and inconvenient unlocking operation position. This significantly improves the reliability and convenience of lock use.

[0010] Furthermore, the electronic unlocking module is provided with a first signal connection terminal and a second signal connection terminal. The first signal connection terminal is used to connect to the vehicle computer, and the second signal connection terminal is connected to the switch via a signal line.

[0011] By setting a first signal connection terminal and a second signal connection terminal on the electronic unlocking module, the first signal connection terminal is used to connect to the vehicle's onboard computer, and the second signal connection terminal is connected to a switch on the side wall of the backpack body via a signal line. This allows the electronic unlocking module to be controlled by the vehicle's onboard computer for centralized or remote control, and also to be manually triggered for unlocking on-site via the switch on the body. This facilitates integration with the vehicle's original electronic control system, reduces additional wiring and control unit settings, and improves the convenience for users to operate directly from the rear of the vehicle. It solves the technical problems of existing car rear storage device locks being difficult to link with the vehicle's onboard system, having a single unlocking control method, and poor compatibility and operability.

[0012] Furthermore, the slow-descent device includes a gas strut, an upper ball joint support, and a lower ball joint support. The upper ball joint support is disposed in the storage cavity, and the lower ball joint support is disposed on the door panel. The upper end of the gas strut is connected to the upper ball joint support, and the lower end of the gas strut is connected to the lower ball joint support.

[0013] By constructing the slow-descent device as a structure consisting of a gas strut, an upper ball joint support, and a lower ball joint support, with the upper ball joint support located inside the storage cavity and the lower ball joint support located on the door panel, the gas strut is connected at both ends to the upper and lower ball joint supports respectively. This allows the gas strut to provide stable support and damping during the opening and closing of the door panel, while the ball joint support compensates for angular changes during door panel rotation, preventing uneven force distribution or jamming at the connection points. This effectively slows down the descent speed of the door panel, improves the smoothness and durability of the slow-descent process, and solves the technical problems of existing technologies that use simple straps or rigid connectors, which cannot achieve both good slow-descent effect and reliable support, are prone to shaking and impact, and have poor assembly compatibility.

[0014] Furthermore, it also includes a hinge, which comprises a first leaf and a second leaf. The first leaf and the second leaf are hinged together. The first leaf is connected to the door panel, and the second leaf is connected to the backpack body. The first leaf rotates around the hinge point as the rotation center. The rotation angle of the first leaf is 0° to 90°. When the first leaf rotates 0°, the door panel is in a horizontal state and the storage cavity is open. When the first leaf rotates 90°, the door panel is in a vertical state and the storage cavity is closed.

[0015] By setting a hinge structure including a first and a second leaf, the first and second leaf are hinged together, with the first leaf connected to the door panel and the second leaf connected to the backpack body. The rotation angle of the first leaf relative to the second leaf is limited to 0° to 90°. When the first leaf rotates 0°, the door panel is in a horizontal position and the storage cavity is open. When the first leaf rotates 90°, the door panel is in a vertical position and the storage cavity is closed. This allows the door panel to reliably be in a horizontal position when open, forming a support platform similar to a small table. When closed, it can accurately return to a vertical closed position. This achieves clear limits and guidance for the opening and closing positions and angles of the door panel, solving the technical problems in the prior art where the rear storage box door of a car has poor stress state after opening, cannot form a stable platform, and has poor opening angle limiting effect, making it prone to accidental closing.

[0016] Further, the first page includes a U-shaped portion and a vertical portion, the vertical portion being disposed on one side of the U-shaped portion and integrally formed with the U-shaped portion, and the vertical portion being connected to the door panel; the second page is an L-shaped page, a receiving cavity is formed between the horizontal piece and the vertical piece of the L-shaped page, the vertical piece is connected to the backpack body and located in the storage cavity, and the front end of the horizontal piece is hinged to the other side of the U-shaped portion; when the first page rotates 0°, the vertical portion is in a horizontal state, and when the first page rotates 90°, the U-shaped portion enters the receiving cavity, and the vertical portion is in a vertical state.

[0017] By designing the first page as an integral part of a U-shaped section and a vertical section, with the vertical section connected to the door panel, and designing the second page as an L-shaped section, a receiving cavity is formed between the horizontal and vertical sections. The vertical section is fixed to the backpack body and located inside the storage cavity. The front end of the horizontal section is hinged to the other side of the U-shaped section. This allows the vertical section to be in a horizontal state when the first page rotates 0°, and the door panel to open horizontally. When the first page rotates 90°, the U-shaped section enters the receiving cavity and the vertical section is in a vertical state, and the door panel vertically closes the storage cavity. This allows the hinge structure to be partially hidden inside the receiving cavity when closed. The overall structure is compact and aesthetically pleasing, and can reliably limit the posture of the door panel under both horizontal and vertical extreme conditions. This solves the technical problems of existing hinge structures, such as large size, unsightly exposure, easy interference during opening and closing, and unstable door panel posture.

[0018] Furthermore, the backpack body is provided with a first sealing strip and a second sealing strip around the storage cavity, the first sealing strip and the second sealing strip being arranged vertically, one above the other; an upper abutment is formed at the top of the back of the door panel, and a lower abutment is provided near the top of the back of the door panel. When the door panel closes the storage cavity, the upper abutment abuts against the first sealing strip, and the lower abutment abuts against the second sealing strip.

[0019] By vertically aligning a first sealing strip and a second sealing strip around the perimeter of the storage cavity on the backpack body, and forming an upper abutment at the top of the back panel and a lower abutment below it, the upper abutment presses against the first sealing strip and the lower abutment presses against the second sealing strip when the storage cavity is closed. This creates two sealing contact areas between the door panel and the backpack body, achieving multi-level sealing and a greater compression stroke. This effectively improves the waterproof, dustproof, and sound insulation performance of the storage cavity, reducing the risk of rainwater, dust, and noise entering the storage cavity during driving. It solves the technical problems of existing automotive rear storage devices, such as simple sealing structure, poor sealing effect, and susceptibility to water seepage and dust accumulation under rain, snow, and harsh conditions.

[0020] Furthermore, the backpack body is provided with a license plate mounting area below the storage cavity, and the backpack body is provided with a license plate light and a tailgate switch connected to the vehicle computer above the license plate mounting area. The light from the license plate light is directed towards the license plate mounting area, and the backpack body is provided with a rear surround view camera connected to the vehicle computer at the bottom of the license plate mounting area.

[0021] By setting a license plate mounting area below the storage compartment of the backpack body, and installing a license plate light and a tailgate switch connected to the vehicle's onboard computer above the license plate mounting area, with the license plate light's beam pointing towards the license plate mounting area, and a rear-view camera connected to the vehicle's onboard computer at the bottom of the license plate mounting area, the license plate, license plate light, tailgate switch, and rear-view camera are rationally integrated and arranged within the rear space of the vehicle. This ensures the requirements for license plate illumination and rear visibility without affecting the installation and use of the storage backpack. It also facilitates connection with the original vehicle's electronic control system, enabling integrated control of the tailgate switch and imaging system. This solves the technical problems of existing technologies where adding a rear storage backpack to the vehicle results in limited license plate mounting space, easy obstruction or complex modification of the license plate light and rear-view camera, and a cluttered and unsightly overall layout.

[0022] Furthermore, it also includes a decorative cover, which has the license plate mounting area. The decorative cover has a light-transmitting opening at the top of the license plate mounting area corresponding to the position of the license plate light, and an operating opening at the position corresponding to the position of the tailgate switch. The decorative cover has an opening at the bottom of the license plate mounting area corresponding to the position of the rear surround view camera. The decorative cover is detachably mounted on the backpack body and located below the storage cavity. The license plate light corresponds to the light-transmitting opening, the tailgate switch corresponds to the operating opening, and the rear surround view camera extends out of the opening. The pull cord is located inside the backpack body and below the storage cavity. The decorative cover covers the pull cord, and the end of the pull cord is provided with a pull ring.

[0023] A decorative cover is installed in the license plate mounting area, with light-transmitting openings corresponding to the license plate light position, an operating opening corresponding to the tailgate switch position, and an opening corresponding to the rear surround view camera position. The decorative cover is detachably installed on the backpack body and located below the storage cavity, with the license plate light corresponding to the light-transmitting opening, the tailgate switch corresponding to the operating opening, and the rear surround view camera extending from the openings. A pull cord connected to the mechanical unlocking module is arranged inside the backpack body and located below the storage cavity, with the pull cord covered by the decorative cover, and a pull ring is provided at the end of the pull cord. Therefore, while ensuring that the license plate light illumination, tailgate opening and closing functions are normal and the rear surround view camera's field of vision are not affected, the electrical components and pull rope inside the rear license plate area are effectively concealed and aesthetically pleasing, improving the overall appearance of the rear area. The removable decorative cover facilitates future maintenance and repair. At the same time, when electronic unlocking fails, the user only needs to remove the decorative cover to expose the pull rope, and pull the ring to achieve mechanical unlocking. This further solves the technical problems of exposed wiring harnesses and pull ropes affecting aesthetics and being easily damaged in existing technologies, as well as the lack of a convenient emergency mechanical unlocking method when electronic unlocking fails.

[0024] The beneficial effects of this utility model are as follows: This invention solves the technical problems of uncontrollable descent speed of car rear storage compartment doors, easy falling of items, and difficulty in maintaining the open position after the door is opened, by setting a storage cavity inside the backpack body, hinged to the door body, and arranging a slow-descent device inside the storage cavity. One end of the slow-descent device is connected to the storage cavity, and the other end is connected to the door panel. When the door panel opens or closes the storage cavity relative to the backpack body with the hinge point as the rotation center, the slow-descent device provides damping and support for the door panel's rotation process, which can effectively slow down the descent speed of the door panel, prevent the door panel from flipping down quickly and causing stored items to fall or collide with the user. It also provides support and limit when the door panel is opened to a predetermined angle, keeping the door panel stably in the open state, which is convenient for the user to store and retrieve items with both hands. This solves the technical problems of uncontrollable descent speed of car rear storage compartment doors, easy falling of items, and difficulty in maintaining the open position after the door is opened, thus improving the safety and convenience of use. Attached Figure Description

[0025] Figure 1 This is a diagram showing the storage backpack installed at the rear of a car (the door panel is rotated 90°, and the door panel is in a vertical position with the storage compartment closed).

[0026] Figure 2 This is a schematic diagram of a storage backpack (the door panel is rotated 90°, and the door panel is in a vertical position with the storage cavity closed).

[0027] Figure 3 This is the emergency use configuration for the storage backpack (the decorative cover and the backpack body are separated).

[0028] Figure 4 This is a schematic diagram of a storage backpack (the door panel is rotated 90°, and the door panel is in a vertical position and closes the storage cavity; the door panel is not shown in this attached diagram).

[0029] Figure 5 This is a diagram showing the storage backpack installed at the rear of a car (the door panel is rotated 0°, the door panel is in a horizontal position, and the storage compartment is open).

[0030] Figure 6 This is a schematic diagram of a storage backpack (the door panel is rotated 0°, the door panel is in a horizontal position, and the storage compartment is open).

[0031] Figure 7 This is another angle diagram of the storage backpack (door panel rotated 0°, door panel in horizontal position and storage compartment open).

[0032] Figure 8 This is another angle diagram of the storage backpack (the door panel is rotated 0°, the door panel is in a horizontal position and the storage cavity is open, the door panel is used as a small table).

[0033] Figure 9 This is a schematic diagram of a storage backpack (the door panel is rotated 0°, the door panel is in a horizontal position and the storage compartment is open; the door panel is not shown in this attached diagram).

[0034] Figure 10 This is a schematic diagram of the hinge (with the first page rotated 90°).

[0035] Figure 11 This is a schematic diagram of the hinge (first page rotated 0°).

[0036] Figure 12 This is a cross-sectional view of a storage backpack.

[0037] Figure 13 This is a cross-sectional view of a gas strut. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments: Implementation examples, in conjunction with Figures 1 to 13 As shown, a storage backpack for the rear of a car includes a backpack body 1, a door panel 2, and a slow-descent device. The backpack body 1 has a storage cavity 11 inside. The door panel 2 is hinged to the backpack body 1 and rotates relative to the backpack body 1 about the hinge point as the rotation center to open or close the storage cavity 11. The slow-descent device is disposed in the storage cavity 11. One end of the slow-descent device is connected to the storage cavity 11, and the other end of the slow-descent device is connected to the door panel 2. The slow-descent device is used to slow down the descent speed of the door panel 2.

[0039] Furthermore, it also includes a lock, which comprises a lock case, a lock hook 3, a mechanical unlocking module, and an electronic unlocking module. The lock is mounted on the backpack body 1. The lock case has a lock opening 31. The mechanical unlocking module, the electronic unlocking module, and the lock hook 3 are all located inside the lock case. The mechanical unlocking module and the electronic unlocking module are respectively connected to the lock hook 3. When the mechanical unlocking module or the electronic unlocking module is working, it can drive the lock hook 3 to move. The door panel 2 is provided with a latch 21. When the door panel 2 closes the storage cavity 11, the latch 21 passes through the lock opening 31 and inserts into the lock case. When the mechanical unlocking module or the electronic unlocking module is working, it drives the lock hook 3 to move, so that the lock hook 3 hooks tightly with the latch 21 to achieve locking, or so that the lock hook 3 separates from the latch 21 to achieve unlocking.

[0040] Furthermore, a switch 12 is provided on the side wall of the backpack body 1, and the switch 12 is connected to the electronic unlocking module via a signal line. A pull rope 4 is provided inside the backpack body 1, and the pull rope 4 is connected to the mechanical unlocking module.

[0041] Furthermore, the electronic unlocking module is provided with a first signal connection terminal and a second signal connection terminal. The first signal connection terminal is used to connect to the vehicle computer (i.e., the vehicle control unit), and the second signal connection terminal is connected to the switch 12 via a signal line.

[0042] Furthermore, the slow-descent device includes a gas strut 5, an upper ball joint support 51, and a lower ball joint support 52. The upper ball joint support 51 is disposed in the storage cavity 11, and the lower ball joint support 52 is disposed on the door panel 2. The upper end of the gas strut 5 is connected to the upper ball joint support 51, and the lower end of the gas strut 5 is connected to the lower ball joint support 52.

[0043] Furthermore, it also includes a hinge 6, which comprises a first leaf 61 and a second leaf 62. The first leaf 61 and the second leaf 62 are hinged together. The first leaf 61 is connected to the door panel 2, and the second leaf 62 is connected to the backpack body 1. The first leaf 61 rotates around the hinge point as the rotation center. The rotation angle of the first leaf 61 is 0° to 90°. When the first leaf 61 rotates 0°, the door panel 2 is in a horizontal state and the storage cavity 11 is open. When the first leaf 61 rotates 90°, the door panel 2 is in a vertical state and the storage cavity 11 is closed.

[0044] Further, the first page 61 includes a U-shaped portion 611 and a vertical portion 612. The vertical portion 612 is disposed on one side of the U-shaped portion 611 and is integrally formed with the U-shaped portion 611. The vertical portion 612 is connected to the door panel 2. The second page 62 is an L-shaped page. A receiving cavity 623 is formed between the horizontal piece 621 and the vertical piece 622 of the L-shaped page. The vertical piece 622 is connected to the backpack body 1 and located in the storage cavity 11. The front end of the horizontal piece 621 is hinged to the other side of the U-shaped portion 611. When the first page 61 rotates 0°, the vertical portion 612 is in a horizontal state. When the first page 61 rotates 90°, the U-shaped portion 611 enters the receiving cavity 623, and the vertical portion 612 is in a vertical state.

[0045] Furthermore, the bottom of the storage cavity 11 has an L-shaped notch 111, the second leaf 62 is placed inside the L-shaped notch 111, and the vertical piece 622 of the L-shaped leaf is locked to the vertical inner wall of the L-shaped notch 111 by bolts.

[0046] Furthermore, the backpack body 1 is provided with a first sealing strip 7 and a second sealing strip 8 around the storage cavity 11. The first sealing strip 7 and the second sealing strip 8 are arranged vertically, one above the other. An upper abutment 22 is formed at the top of the back of the door panel 2, and a lower abutment 23 is provided near the top of the back of the door panel 2. When the door panel 2 closes the storage cavity 11, the upper abutment 22 abuts against the first sealing strip 7, and the lower abutment 23 abuts against the second sealing strip 8.

[0047] Furthermore, both the first sealing strip 7 and the second sealing strip 8 are annular strips.

[0048] Furthermore, the backpack body 1 is provided with a first connecting rib 13 and a second connecting rib 14 around the storage cavity 11, and the first connecting rib 13 and the second connecting rib 14 are arranged one above the other in the vertical direction. The first connecting rib 13 is a T-shaped connecting rib, and the first sealing strip 7 is a hollow first sealing strip 7. The bottom of the first sealing strip 7 has a first slot 71 with a width smaller than the width of the transverse rib of the T-shaped connecting rib. The T-shaped connecting rib passes through the first slot 71 and is inserted into the first sealing strip 7. The transverse rib of the T-shaped connecting rib is tightly attached to the inner wall of the first sealing strip 7, and the vertical rib of the T-shaped connecting rib extends outward through the first slot 71. The second sealing strip 8 includes a hollow front strip 81 and a hollow rear strip 82, which are connected. The bottom of the hollow rear strip 82 has a second snap 821, and silicone sheets 822 are spaced apart on the inner wall of the hollow rear strip 82. The second connecting rib 14 passes through the second snap 821 and is inserted into the inner cavity of the hollow rear strip 82, and the silicone sheets 822 are tightly attached to the second connecting rib 14.

[0049] Furthermore, when the door panel 2 closes the storage cavity 11, the upper abutment part 22 abuts against the hollow first sealing strip 7, and the lower abutment part 23 abuts against the hollow front sealing strip 81.

[0050] Furthermore, the backpack body 1 is provided with a license plate mounting area 15 below the storage cavity 11, and a license plate light 16 and a tailgate switch 17 connected to the vehicle computer are provided above the license plate mounting area 15. The light of the license plate light 16 is directed toward the license plate mounting area 15, and a rear surround view camera 18 connected to the vehicle computer is provided at the bottom of the backpack body 1 in the license plate mounting area 15.

[0051] Furthermore, it also includes a decorative cover 9, which has a license plate mounting area 15. The license plate mounting area 15 has bolt holes 151 spaced apart. The decorative cover 9 has a light-transmitting opening 91 at the top of the license plate mounting area 15 corresponding to the license plate light 16, and an operating opening 92 at the position corresponding to the tailgate switch 17. The decorative cover 9 has an opening 93 at the bottom of the license plate mounting area 15 corresponding to the rear surround view camera 18. The decorative cover 9 is detachably mounted on the backpack body 1 and located below the storage cavity 11. The license plate light 16 corresponds to the light-transmitting opening 91, the tailgate switch 17 corresponds to the operating opening 92, and the rear surround view camera 18 extends out of the opening 93. The pull rope 4 is located inside the backpack body 1 and below the storage cavity 11. The decorative cover 9 covers the pull rope 4, and the end of the pull rope 4 is provided with a pull ring 41.

[0052] It also includes a partition net 10, which is hooked inside the storage cavity 11 and divides the storage cavity 11 into multiple storage spaces.

[0053] By incorporating a storage backpack with a slow-closing function at the rear of the vehicle, and employing a structure that combines door panel 2 with a slow-closing device, the door panel 2 can be smoothly opened and precisely limited within the 0° to 90° range via the limiting hinge 6. This allows the door panel 2 to reliably and vertically close the storage cavity 11 while maintaining a stable horizontal small table position. The combination of a mechanical and electronic unlocking module in the lock structure, the side wall switch 12 and pull rope 4 emergency mechanical unlocking mechanism, and the dual signal interface design of the electronic unlocking module ensure compatibility between electronic unlocking and emergency mechanical unlocking, facilitating integration with the vehicle's computer control. Multiple annular sealing strips ensure reliable compression of the upper and lower sealing strips when the door panel 2 is closed, significantly improving the waterproof, dustproof, and noise reduction performance of the storage cavity 11. Simultaneously, a license plate mounting area 15, license plate light 16, tailgate switch 17, and rear surround view camera 18 are integrated below the storage cavity 11, with the pull rope 4 concealed by a removable decorative cover 9, further enhanced by an internally detachable partition. Network 10 rationally partitions the storage space, thereby comprehensively solving the following technical problems existing in the current technology of car rear storage backpacks: the door panel 2 lacks an effective slow-down mechanism during opening, the folding speed is uncontrollable and it cannot stably maintain the horizontal table posture; the locks mostly rely on electronic unlocking, which cannot be reliably opened when the vehicle is powered off or the electronic control system is abnormal, and the emergency mechanical unlocking capability is insufficient, resulting in poor locking security; the sealing structure is simple and the rubber strip installation method is simple, which is prone to water seepage, dust ingress and wind noise under conditions such as rain, snow and high-speed driving; after the storage backpack is installed, it is difficult to integrate and modularly arrange components such as license plate, license plate light 16, car tailgate switch 17 and rear surround view camera 18 with the original vehicle, the wiring harness of the storage backpack is easy to be exposed, affecting the overall appearance of the rear; and the storage cavity 11 is mostly a single large cavity, which makes it easy for items to roll, collide and pile up messily in the cavity, making it inconvenient to classify and store and resulting in low space utilization.

[0054] In other embodiments, the gas strut 5 is a variable damping gas strut with a buffer section. The gas strut 5 includes a cylinder 53, a piston 54, and a rod 55. The piston 54 is slidably placed inside the cylinder 53. The cylinder 53 is connected to the upper ball joint support 51. One end of the rod 55 is connected to the piston 54, and the other end of the rod 55 extends out of the cylinder 53 and is connected to the lower ball joint support 52. The inner cavity of the cylinder 53 is divided into a front throttling exhaust section 56, a middle throttling exhaust section 57 and a rear throttling exhaust section 58 in sequence along the movement direction of the piston 54, and the front throttling exhaust section 56, the middle throttling exhaust section 57 and the rear throttling exhaust section 58 are interconnected. The inner wall of the front throttling exhaust section 56 is provided with a first throttling air inlet / outlet hole 20 for connecting the inner cavity of the cylinder 53 with the outside air. The inner wall of the middle throttling exhaust section 57 is provided with a second throttling air inlet / outlet hole 30 for connecting the inner cavity of the cylinder 53 with the outside air. The inner wall of the rear throttling exhaust section 58 is provided with a third throttling air inlet / outlet hole 40 for connecting the inner cavity of the cylinder 53 with the outside air. The diameters of the first throttling air inlet / outlet hole 20, the second throttling air inlet / outlet hole 30, and the third throttling air inlet / outlet hole 40 gradually decrease from the inner cavity of the cylinder 53 toward the outside.

[0055] The first throttling inlet and outlet port 20 includes a first cylindrical hole 201 radially opened along the cylinder body 53 and a first conical throttling hole 202 communicating with the outer end of the first cylindrical hole 201. The inner end diameter of the first conical throttling hole 202 is larger than its outer end diameter. The inner wall of the first cylindrical hole 201 is provided with a plurality of first ribs 203 extending along the hole axis in the circumferential direction. The radial height of each first rib 203 gradually decreases from one end near the inner cavity of the cylinder body 53 to one end near the first conical throttling hole 202. The second throttling inlet / outlet port 30 includes a second cylindrical hole 301 radially opened along the cylinder body 53 and a second conical throttling hole 302 communicating with the outer end of the second cylindrical hole 301. The axial length of the second conical throttling hole 302 is greater than the axial length of the first conical throttling hole 202, and the minimum diameter of the outer end of the second conical throttling hole 302 is smaller than the minimum diameter of the outer end of the first conical throttling hole 202. At least one annular recess 303 is formed at intervals along the circumferential direction on the inner wall of the second cylindrical hole 301. The recess depth of the annular recess 303 is less than 1 / 3 of the radius of the second cylindrical hole 301. The third throttling inlet / outlet port 40 includes a third cylindrical hole 401 radially opened along the cylinder body 53 and a third conical throttling hole 402 communicating with the outer end of the third cylindrical hole 401. The axial length of the third conical throttling hole 402 is greater than the axial length of the second conical throttling hole 302, and the minimum diameter of the outer end of the third conical throttling hole 402 is smaller than the minimum diameter of the outer end of the second conical throttling hole 302. A guide block 403 is provided in the inner cavity of the third cylindrical hole 401. The guide block 403 protrudes from the hole wall of the third cylindrical hole 401 toward the center. Its front end face facing the inner cavity of the cylinder body 53 is an arc transition surface and occupies 10% to 40% of the effective flow area of ​​the cross-section of the third cylindrical hole 401.

[0056] The principle and benefits of slow descent: A variable damping gas strut 5 with a buffer section is installed in the storage cavity 11. One end is connected to the upper ball joint support 51 in the storage cavity 11, and the other end is connected to the lower ball joint support 52 on the door panel 2. The inner cavity of the cylinder 53 of the gas strut 5 is divided into a front throttling exhaust section 56, a middle throttling exhaust section 57, and a rear throttling exhaust section 58 along the direction of piston 54 movement. A first throttling inlet / exhaust hole 20, a second throttling inlet / exhaust hole 30, and a third throttling inlet / exhaust hole 40 are respectively provided on the inner wall of each section. The diameter of each throttling inlet / exhaust hole gradually decreases from the inner cavity of the cylinder 53 towards the outside, so that when the piston 54 is in different stroke positions, the inner cavity of the cylinder 53 is connected to the outside through three, two, or one throttling hole, thereby allowing for... During the movement of door panel 2 from vertically closed to horizontally open or from horizontally closed to vertically closed, the front section forms a small damping (multiple throttle holes for intake and exhaust), the middle section forms a medium damping (partial throttle holes for intake and exhaust), and the final section forms a large damping (only a single throttle hole for intake and exhaust). This achieves segmented and controllable slow descent of door panel 2 throughout its entire stroke. In particular, it significantly reduces the movement speed of door panel 2 when it approaches the end position, avoiding the risk of door panel 2 impacting the backpack body 1 or causing "hand injury". It also reduces the risk of items in storage cavity 11 slipping or falling due to the violent descent of door panel 2. This significantly improves the safety, smoothness, and comfort of the rear storage device during opening and closing, and meets the requirements of the vehicle's rear auxiliary components for safe opening and closing performance.

Claims

1. A storage backpack for the rear of a car, comprising a backpack body, a door panel, and a slow-descent device, characterized in that: The backpack body has a storage cavity. The door panel is hinged to the backpack body and rotates relative to the backpack body with the hinge point as the rotation center to open or close the storage cavity. The slow-descent device is disposed in the storage cavity. One end of the slow-descent device is connected to the storage cavity, and the other end of the slow-descent device is connected to the door panel. The slow-descent device is used to slow down the descent speed of the door panel.

2. The storage backpack at the rear of a car according to claim 1, characterized in that: It also includes a lock, which comprises a lock case, a lock hook, a mechanical unlocking module, and an electronic unlocking module. The lock is mounted on the backpack body. The lock case has a lock opening. The mechanical unlocking module, the electronic unlocking module, and the lock hook are all located inside the lock case. The mechanical unlocking module and the electronic unlocking module are respectively connected to the lock hook. When either the mechanical unlocking module or the electronic unlocking module is working, it can drive the lock hook to move. A latch is provided on the door panel. When the door panel closes the storage cavity, the latch passes through the lock opening and inserts into the lock case. When either the mechanical unlocking module or the electronic unlocking module is working, it drives the lock hook to move, so that the lock hook and the latch are locked, or the lock hook and the latch are separated to unlock.

3. The storage backpack at the rear of the car according to claim 2, characterized in that: A switch is provided on the side wall of the backpack body, and the switch is connected to the electronic unlocking module via a signal line. A pull rope is provided inside the backpack body, and the pull rope is connected to the mechanical unlocking module.

4. The storage backpack at the rear of the car according to claim 3, characterized in that: The electronic unlocking module is provided with a first signal connection terminal and a second signal connection terminal. The first signal connection terminal is used to connect to the vehicle computer, and the second signal connection terminal is connected to the switch through a signal line.

5. The storage backpack at the rear of a car according to claim 1, characterized in that: The slow-descent device includes a gas strut, an upper ball joint support, and a lower ball joint support. The upper ball joint support is disposed in the storage cavity, and the lower ball joint support is disposed on the door panel. The upper end of the gas strut is connected to the upper ball joint support, and the lower end of the gas strut is connected to the lower ball joint support.

6. The storage backpack at the rear of a car according to claim 1, characterized in that: It also includes a hinge, which comprises a first leaf and a second leaf. The first leaf and the second leaf are hinged together. The first leaf is connected to the door panel, and the second leaf is connected to the backpack body. The first leaf rotates around the hinge point as the rotation center. The rotation angle of the first leaf is 0° to 90°. When the first leaf rotates 0°, the door panel is in a horizontal state and the storage cavity is open. When the first leaf rotates 90°, the door panel is in a vertical state and the storage cavity is closed.

7. The storage backpack at the rear of a car according to claim 6, characterized in that: The first page includes a U-shaped portion and a vertical portion. The vertical portion is disposed on one side of the U-shaped portion and is integrally formed with the U-shaped portion. The vertical portion is connected to the door panel. The second page is an L-shaped page. A receiving cavity is formed between the horizontal piece and the vertical piece of the L-shaped page. The vertical piece is connected to the backpack body and located in the storage cavity. The front end of the horizontal piece is hinged to the other side of the U-shaped portion. When the first page rotates 0°, the vertical portion is in a horizontal state. When the first page rotates 90°, the U-shaped portion enters the receiving cavity, and the vertical portion is in a vertical state.

8. The storage backpack at the rear of a car according to claim 1, characterized in that: The backpack body is provided with a first sealing strip and a second sealing strip around the storage cavity. The first sealing strip and the second sealing strip are arranged vertically, one above the other. An upper abutment is formed at the top of the back of the door panel, and a lower abutment is provided near the top of the back of the door panel. When the door panel closes the storage cavity, the upper abutment abuts against the first sealing strip, and the lower abutment abuts against the second sealing strip.

9. The storage backpack at the rear of a car according to claim 3, characterized in that: The backpack body is located below the storage cavity and has a license plate mounting area. Above the license plate mounting area, the backpack body has a license plate light and a tailgate switch connected to the vehicle computer. The light from the license plate light is directed towards the license plate mounting area. At the bottom of the license plate mounting area, the backpack body has a rear surround view camera connected to the vehicle computer.

10. The storage backpack at the rear of a car according to claim 9, characterized in that: It also includes a decorative cover, which has the license plate mounting area. The decorative cover has a light-transmitting opening at the top of the license plate mounting area corresponding to the position of the license plate light, and an operating opening at the position corresponding to the position of the tailgate switch. The decorative cover has an opening at the bottom of the license plate mounting area corresponding to the position of the rear surround view camera. The decorative cover is detachably mounted on the backpack body and located below the storage cavity. The license plate light corresponds to the light-transmitting opening, the tailgate switch corresponds to the operating opening, and the rear surround view camera extends out of the opening. The pull cord is located inside the backpack body and below the storage cavity. The decorative cover covers the pull cord, and the end of the pull cord has a pull ring.

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