Hydraulic trunk assembly of automobile trunk

Abstract

The invention relates to the technical field of automobile equipment, and particularly discloses an automobile trunk hydraulic trunk assembly which comprises a main body structure, a pair of side blocking structures, a pair of driving structures and a sliding cover structure. The pair of driving structures are detachably arranged below the main body structure and are symmetrical to each other, and the sliding cover structure is detachably arranged on the main body structure; the driving structure bears and can drive the main body structure to be folded or unfolded in a supporting mode, the height is reduced after the main body structure is folded, and running resistance is reduced; when the main body structure support is opened, a box body is formed for loading articles; the left side and the right side of the main body structure are shielded through the side blocking structures, adjustment can be conducted according to the state of the main body structure, the box cover above the box body is controlled to be automatically opened or closed through the sliding cover structure, manpower is saved, and use is convenient and fast.

Description

Technical Field

[0001] The invention relates to the technical field of automobile equipment, in particular to a hydraulic luggage box assembly in an automobile trunk. Background Art

[0002] A car trunk is a storage device installed on the roof of a car, which makes full use of the space above the car roof, which is generally not effectively utilized; however, most existing trunks are manually opened or closed, and are made of plastic, metal, etc., and the volume of the existing trunks after assembly is fixed, and they also have a certain height when not in use, which increases driving resistance; common trunks are mostly installed on the roof of large cars, and since the car itself has a certain height, it is extremely inconvenient to use a manual switch, so a hydraulic trunk assembly for a car trunk is designed. Summary of the invention

[0003] The object of the present invention is to provide a hydraulic luggage box assembly for a car trunk to solve the problems raised in the above background technology.

[0004] In order to solve the above-mentioned problem, the present invention provides the following technical solution: a hydraulic luggage box assembly for a car trunk, comprising a main structure, a pair of side stop structures, a pair of drive structures and a sliding cover structure, wherein the pair of side stop structures are detachably mounted on the main structure, the pair of drive structures are detachably mounted below the main structure and are symmetrical to each other, and the sliding cover structure is detachably mounted on the main structure.

[0005] Preferably, the main structure includes a first box body, a plurality of mounting bolts, a second box body, two pairs of first side panels and two pairs of adapters; the first box body is a box body without an upper wall, and first mounting grooves are provided on the upper wall edges of the left and right ends of the first box body, a pair of first flip openings are symmetrically provided on the upper wall edges of the front and rear side walls of the first box body, a plurality of mounting bolts are detachably screwed to the left and right side walls of the first box body, and are located at the four corners of the first mounting grooves, the second box body is a rectangular frame structure, and second flip openings corresponding to the first flip openings are provided on the lower wall edges of the front and rear side walls of the second box body, and the second The box body is movably arranged above the first box body, and cover grooves are penetrated near the top of the front and rear side walls of the second box body, and second installation grooves are penetrated on the left and right side walls of the second box body. One ends of the two pairs of the first side panels are movably arranged on the first box body and the second box body, and are respectively located at the first flip opening and the second flip opening. The first side panel is located between the first box body and the second box body, and the other ends of the first side panels are each provided with a third flip opening corresponding to the first flip opening. Both ends of the two pairs of the adapter seats are movably connected between the other ends of the first side panels, and the adapter seats are located in the third flip opening.

[0006] Preferably, the side block structure includes a side bottom plate, a side top plate, a plurality of pins and a plurality of coil springs; one end of the side bottom plate is movably inserted in the first mounting groove and fixed by a mounting bolt, a pair of fourth flip openings are symmetrically provided at the top end of the side bottom plate, and mounting cavities are provided on the front and rear side walls in the fourth flip openings, one end of the side top plate is movably arranged at the top end of the side bottom plate, and a protrusion matching the fourth flip opening is provided at one end of the side top plate, one end of a plurality of the pins are respectively fixedly provided on the front and rear side walls of the protrusion at one end of the side top plate, and the other end of the pins are movably inserted in the mounting cavity, a plurality of the coil springs are respectively fixedly provided in the mounting cavity at the top end of the side bottom plate, and the middle part of the coil spring is fixedly sleeved on the other end of the pin.

[0007] Preferably, the driving structure includes a base frame, a movable seat, a support arm and a first hydraulic cylinder; the heights of both ends of the base frame are smaller than the middle part, and a sliding groove is provided on the front side wall of the middle part of the base frame, the sliding groove is located in front of the center line of the upper wall of the base frame, and a plurality of mounting threaded holes are equidistantly provided on the upper wall of the base frame, and the mounting threaded holes are located behind the center line. The base frame can be detachably mounted on the lower wall of the first box body and is located at the front end, and the sliding groove is located on the front side of the first box body, and the movable seat can be movably embedded in the sliding groove, and the movable seat cannot be separated from the base frame, one end of the support arm is movably mounted on the front side wall of the right end of the second box body, and the other end of the support arm is tilted to the left and movably connected to the movable seat, one end of the first hydraulic cylinder is movably mounted on the front side wall of the right end of the base frame, and the first hydraulic cylinder is located on the right side of the sliding groove, and the other end of the first hydraulic cylinder is tilted and movably connected to the support arm.

[0008] Preferably, the support arm is L-shaped, and one end of the support arm is thicker than the other end.

[0009] Preferably, the sliding cover structure includes a box cover, a docking seat, a bracket and a second hydraulic cylinder; the box cover is rectangular, and the lower walls at the front and rear ends of the box cover are provided with claws that fit into the cover groove, the box cover is movably mounted on the second box body, and the claws are movably mounted in the cover groove, the docking seat is L-shaped, one end of the docking seat is detachably mounted on the front side wall of the box cover, one end of the bracket is fixedly arranged on the front side wall of the left end of the second box body, one end of the second hydraulic cylinder is fixedly arranged on the other end of the bracket, and the telescopic end of the second hydraulic cylinder is connected to the other end of the docking seat.

[0010] Preferably, the left and right ends of the box cover are respectively fitted on the wall edges of the second installation groove, and the length of the box cover is smaller than the length of the front side wall of the second box body.

[0011] Preferably, the upper wall edge of the first box body is close to the lower wall edge of the second box body, and the first side panel is folded relative to each other through the adapter and is located between the first box body and the second box body.

[0012] Preferably, the top end of the side bottom plate movably passes through the second installation groove, and the side top plate is relatively folded.

[0013] The hydraulic luggage box assembly for the trunk of an automobile proposed by the present invention has the following beneficial effects: the main structure is supported and driven to be folded or supported to be opened through the driving structure, and the height is lowered when the main structure is folded to reduce driving resistance; when the main structure is supported to be opened, a box body is formed for loading articles; the left and right sides of the main structure are shielded by the side block structure, and can be adjusted according to the state of the main structure; the box cover above the box body is controlled to be automatically opened or closed by the sliding cover structure, which saves manpower and is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a first assembly structure of the present invention; Figure 2 It is a schematic diagram of a second assembly structure of the present invention; Figure 3 It is a schematic diagram of the split structure of the main structure of the present invention; Figure 4 It is a schematic diagram of the split structure of the side stop structure of the present invention; Figure 5 It is a schematic diagram of the split structure of the driving structure of the present invention; Figure 6 It is a schematic diagram of the disassembled structure of the sliding cover structure of the present invention; Figure 7 For the present invention Figure 4 A local enlarged view of point A in FIG. Figure 8 This is a schematic diagram of the flip display structure of the first side panel of the present invention; Fig. 9 It is a schematic diagram showing the structure of the second box body descending movement of the present invention.

[0015] In the figure: 1. main structure, 11. first box body, 12. mounting bolts, 13. second box body, 14. first side plate, 15. adapter seat, 2. side block structure, 21. side bottom plate, 22. side top plate, 23. pin, 24. coil spring, 3. driving structure, 31. base frame, 32. movable seat, 33. support arm, 34. first hydraulic cylinder, 4. sliding cover structure, 41. box cover, 42. docking seat, 43. bracket, 44. second hydraulic cylinder, 51. first flip opening, 52. second flip opening, 53. third flip opening, 54. fourth flip opening, 6. first mounting groove, 7. second mounting groove, 8. sliding groove. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-Figure 9 The present invention provides a technical solution: a hydraulic luggage box assembly for a car trunk, comprising a main structure 1, a pair of side block structures 2, a pair of drive structures 3 and a sliding cover structure 4, wherein the pair of side block structures 2 are detachably mounted on the main structure 1, the pair of drive structures 3 are detachably mounted below the main structure 1 and are symmetrical to each other, and the sliding cover structure 4 is detachably mounted on the main structure 1; the main structure 1 is supported and controlled by the drive structure 3, the main structure 1 can be driven to be folded or opened by the drive structure 3, the left and right side walls are shielded by the side block structures 2 in coordination with the folding or opening of the main structure 1, and the electric control switch is realized by the sliding cover structure 4.

[0018] As a further solution of the present invention, the main structure 1 includes a first box body 11, a plurality of mounting bolts 12, a second box body 13, two pairs of first side panels 14 and two pairs of adapters 15; the first box body 11 is a box body without an upper wall, and the upper wall edges of the left and right ends of the first box body 11 are provided with first mounting grooves 6, and the upper wall edges of the front and rear side walls of the first box body 11 are symmetrically provided with a pair of first flip openings 51, and the plurality of mounting bolts 12 are detachably screwed to the left and right side walls of the first box body 11, and are located at the four corners of the first mounting grooves 6, the second box body 13 is a rectangular frame structure, and the lower wall edges of the front and rear side walls of the second box body 13 are provided with second flip openings 52 corresponding to the first flip openings 51, the second box body 13 is movably arranged above the first box body 11, and the front and rear side walls of the second box body 13 are penetrated by cover grooves near the top, and the second The left and right side walls of the box body 13 are penetrated with second mounting grooves 7, one ends of the two pairs of first side panels 14 are movably arranged on the first box body 11 and the second box body 13, respectively, and are located at the first flip opening 51 and the second flip opening 52, respectively, the first side panel 14 is located between the first box body 11 and the second box body 13, and the other ends of the first side panels 14 are provided with third flip openings 53 corresponding to the first flip openings 51, and the two ends of the two pairs of adapters 15 are movably connected between the other ends of the first side panels 14, and the adapter 15 is located in the third flip opening 53; by moving the first box body 11 away from the second box body 13, the first side panel 14 between them can be opened, and the first side panels 14 are movably connected through the adapter 15, and when the second box body 13 approaches the first box body 11, the first side panels 14 are relatively flipped and folded through the adapter 15.

[0019] As a further solution of the present invention, the side block structure 2 includes a side bottom plate 21, a side top plate 22, a plurality of pins 23 and a plurality of coil springs 24; one end of the side bottom plate 21 is movably inserted into the first mounting groove 6 and fixed by the mounting bolt 12, a pair of fourth flip openings 54 are symmetrically opened at the top of the side bottom plate 21, and the front and rear side walls of the fourth flip opening 54 are both provided with mounting cavities, one end of the side top plate 22 is movably placed at the top of the side bottom plate, and one end of the side top plate 22 is provided with a protrusion that fits with the fourth flip opening 54, and one end of the plurality of pins 23 is fixedly arranged at the side top The plate 22 is protruded at one end on the front and rear side walls, and the other end of the pin shaft 23 is movably inserted in the installation cavity. A plurality of coil springs 24 are respectively fixedly arranged in the installation cavity at the top end of the side bottom plate 21, and the middle part of the coil spring 24 is fixedly sleeved on the other end of the pin shaft 23. The side bottom plate 21 is installed on the first box body 11 and fixed, so that the second box body 13 can be lifted and moved along the side bottom plate 21. The side top plate 22 is inserted into the second installation groove 7 of the second box body 13 to achieve side wall shielding. When the side top plate 22 passes through the second installation groove 7, the side top plate 22 is relatively flipped by the force of the coil spring 24.

[0020] As a further solution of the present invention, the driving structure 3 includes a base frame 31, a movable seat 32, a support arm 33 and a first hydraulic cylinder 34; the height of the two ends of the base frame 31 is less than the middle part, and a sliding groove 8 is provided on the front side wall of the middle part of the base frame 31, and the sliding groove 8 is located in front of the center line of the upper wall of the base frame 31. A plurality of mounting threaded holes are equidistantly provided on the upper wall of the base frame 31, and the mounting threaded holes are located behind the center line. The base frame 31 can be detachably placed on the lower wall of the first box body 11 and at the front end, the sliding groove 8 is located at the front side of the first box body 11, the movable seat 32 is movably embedded in the sliding groove 8, and the movable seat 32 cannot be separated from the base frame 31, and the support arm 33 is L-shaped, and the thickness of one end of the support arm 33 is greater than that of the other end. One end of the support arm 33 is movably arranged on the front side wall of the right end of the second box body, and the other end of the support arm 33 is tilted to the left and movably connected to the moving seat 32. One end of the first hydraulic cylinder 34 is movably arranged on the front side wall of the right end of the base frame 31, and the first hydraulic cylinder 34 is located on the right side of the sliding groove 8, and the other end of the first hydraulic cylinder 34 is tilted and movably connected to the support arm 33; the first box body 11 is fixed to the vehicle body through the base frame 31, and the first hydraulic cylinder 34 is contracted to pull one end of the support arm 33 to move in the sliding groove 8 of the base frame 31 through the moving seat 32. Since the second box body 13 connected to the other end of the support arm 33 cannot move left and right, the support arm 33 is forced to flip over and raise the second box body 13.

[0021] As a further solution of the present invention, the sliding cover structure 4 includes a box cover 41, a docking seat 42, a bracket 43 and a second hydraulic cylinder 44; the box cover 41 is rectangular, and the lower walls at the front and rear ends of the box cover 41 are provided with claws that fit into the cover groove, the box cover 41 is movably mounted on the second box body 13, and the claws are movably mounted in the cover groove, the docking seat 42 is L-shaped, one end of the docking seat 42 is detachably mounted on the front side wall of the box cover 41, one end of the bracket 43 is fixedly arranged on the left front side wall of the second box body 13, one end of the second hydraulic cylinder 44 is fixedly arranged on the other end of the bracket 43, and the telescopic end of the second hydraulic cylinder 44 is connected to the other end of the docking seat 42; the second hydraulic cylinder 44 on the bracket 43 is telescoped, and the box cover 41 is driven to move left and right on the second box body 13 for switching with the help of the connection of the docking seat 42.

[0022] As a further solution of the present invention, the left and right ends of the box cover 41 are respectively attached to the wall edges of the second installation groove 7, and the length of the sliding cover is less than the length of the front side wall of the second box body 13, which is used to limit the length of the box cover 41 according to design requirements to prevent the box cover 41 from blocking the second installation groove 7.

[0023] As a further solution of the present invention, the upper wall edge of the first box body 11 is close to the lower wall edge of the second box body 13, and the first side panel 14 is relatively folded through the adapter 15 and located between the first box body 11 and the second box body 13 for design folding requirements.

[0024] As a further solution of the present invention, the top end of the side bottom plate 21 movably passes through the second mounting groove 7, and the side top plate 22 is relatively folded for folding use requirements.

[0025] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process. The specific work is as follows.

[0026] First, the device is fixed on the vehicle body through the base frame 31 in the driving structure 3, and the first box 11 in the main structure 1 is fixed on the base frame 31; When in use, the first hydraulic cylinder 34 is driven to contract, driving the support arm 33 and the first hydraulic cylinder 34 to move one end thereof in a limited position in the sliding groove 8 of the bottom frame 31 through the moving seat 32, that is, one end of the support arm 33 is close to the first hydraulic cylinder 34, prompting the moving seat 32 to be close to the first hydraulic cylinder 34. Since both ends of the support arm 33 are movably connected, and the other end of the support arm 33 is movably connected to the side wall of the second box body 13, and the second box body 13 cannot move left and right, the support arm 33 will flip as the first hydraulic cylinder 34 contracts, and the other end of the support arm 33 supports and raises the second box body 13, that is, the whole box body is opened; As the support arm 33 flips, the second box body 13 is forced to move upward on the side bottom plate 21 in the side stop structure 2. The rise of the second box body 13 pulls the first side plate 14 between the second box body 13 and the first box body 11, and as the first side plate 14 rises, it flips over on the first box body 11 and the second box body 13 through the first flip opening 51 and the second flip opening 52 respectively, and the first side plates 14 arranged opposite to each other are flipped and opened to parallel docking through the movable docking of the adapter 15 in the third flip opening 53. As the second box body 13 rises, the first side plates 14 are opened. 14 is used to block the side wall, and then the first box body 11, the second box body 13, the first side plate 14 and the side blocking structure 2 form a box body with a certain space for loading; and as the second box body 13 rises, the second box body 13 will separate from the side bottom plate 21 and exert force on the side top plate 22, so that the side top plate 22 is forced to flip with the help of the pin shaft 23 and fit parallel to the side bottom plate 21, and then the side top plate 22 is inserted into the second installation groove 7 for blocking; and the side bottom plate 21 is fixed in the first installation groove 6 of the first box body 11 by the installation bolt 12 and is always fixed; Then, the second hydraulic cylinder 44 on the support 43 in the sliding cover structure 4 can be extended, and the box cover 41 can be moved on the second box body 13 through the docking seat 42 to open the box body for delivery or closing; When not in use, the first hydraulic cylinder 34 is controlled to extend. As the first hydraulic cylinder 34 extends and applies force, one end of the arm 33 moves away from the first hydraulic cylinder 34 through the moving seat 32 to reset, slide and flip. As the arm 33 moves and flips, the second box 13 loses its supporting force and the force is reduced. The second box 13 is pulled down by the arm 33, and the first side plate 14 is connected to the adapter seat 15 (such as Figure 8-9 The first side panel 14 is relatively flipped until it is folded, and the first side panel 14 after relative flipping is located between the first box body 11 and the second box body 13 for storage; at the same time, when the second box body 13 descends to the side bottom panel 21 and passes through the second installation groove 7, the side top panel 22 loses the force of the second installation groove 7, and the side top panel 22 is driven by the return force of the coil spring 24 to flip on the fourth flip opening 54 of the side bottom panel 21, and the side top panel 22 is relatively flipped and located above the box cover 41 to complete folding (the folded state is shown in FIG. Figure 2 shown); The overall operating principle is as follows: the first hydraulic cylinder 34 drives the movement of the support arm 33 and the limitation of the first box body 11 and the second box body 13, so that the support arm 33 is flipped along with the movement and supports the second box body 13 to a certain height. As the second box body 13 rises, the first side panel 14 is pulled to relatively flip over to parallel docking to form a shielding. As the second box body 13 rises, it will rise and move on the side bottom plate 21, and will apply force to the side top plate 22, so that the side top plate 22 is forced to flip over and enter the second mounting groove 7 to dock with the side bottom plate 21 for shielding. When the second box body 13 loses support with the help of the support arm 33 and descends, the first side panel 14 is relatively flipped and folded into the first box body 11 and the second box body 13 through the adapter 15, and the second box body 13 is reset on the side bottom plate 21. After the side top plate 22 loses the force of the second mounting groove 7, it is flipped and reset on the box cover 41 with the help of the torsion of the coil spring 24.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic luggage box assembly for a car trunk, characterized in that: It comprises a main structure (1), a pair of side stop structures (2), a pair of drive structures (3) and a sliding cover structure (4), wherein the pair of side stop structures (2) are detachably mounted on the main structure (1), the pair of drive structures (3) are detachably mounted below the main structure (1) and are symmetrical to each other, and the sliding cover structure (4) is detachably mounted on the main structure (1); The main structure (1) comprises a first box body (11), a plurality of mounting bolts (12), a second box body (13), two pairs of first side plates (14) and two pairs of adapter seats (15); The first box body (11) is a box body without an upper wall, and the upper wall edges of the left and right ends of the first box body (11) are both provided with first installation grooves (6), the upper wall edges of the front and rear side walls of the first box body (11) are both symmetrically provided with a pair of first flip openings (51), a plurality of mounting bolts (12) are respectively detachably screwed to the left and right side walls of the first box body (11), and are located at the four corners of the first installation grooves (6), the second box body (13) is a rectangular frame structure, and the lower wall edges of the front and rear side walls of the second box body (13) are both provided with second flip openings (52) corresponding to the first flip openings (51), the second box body (13) is movably arranged above the first box body (11), and the front and rear side walls of the second box body (13) are close to each other. The top ends of the two side panels (14) are provided with cover grooves, the left and right side walls of the second box body (13) are provided with second installation grooves (7), one end of the two pairs of the first side panels (14) are movably arranged on the first box body (11) and the second box body (13), and are respectively located at the first flip opening (51) and the second flip opening (52), the first side panels (14) are located between the first box body (11) and the second box body (13), the other ends of the first side panels (14) are provided with third flip openings (53) corresponding to the first flip openings (51), the two ends of the two pairs of the adapter seats (15) are respectively movably connected between the other ends of the first side panels (14), and the adapter seats (15) are located in the third flip openings (53).

2. The hydraulic luggage box assembly for a car trunk according to claim 1, characterized in that: The side stop structure (2) comprises a side bottom plate (21), a side top plate (22), a plurality of pins (23) and a plurality of coil springs (24); One end of the side bottom plate (21) is movably inserted into the first mounting groove (6) and fixed by mounting bolts (12); a pair of fourth flip openings (54) are symmetrically opened at the top of the side bottom plate (21), and mounting cavities are opened on both front and rear side walls of the fourth flip opening (54); one end of the side top plate (22) is movably arranged at the top of the side bottom plate, and a protrusion that fits with the fourth flip opening (54) is provided at one end of the side top plate (22); one end of a plurality of the pin shafts (23) are respectively fixedly arranged on the front and rear side walls of the protrusion at one end of the side top plate (22), and the other end of the pin shafts (23) are movably inserted into the mounting cavity; a plurality of the coil springs (24) are respectively fixedly arranged in the mounting cavity at the top of the side bottom plate (21), and the middle part of the coil spring (24) is fixedly sleeved on the other end of the pin shaft (23).

3. The hydraulic luggage box assembly for a car trunk according to claim 2, characterized in that: The driving structure (3) comprises a base frame (31), a movable seat (32), a support arm (33) and a first hydraulic cylinder (34); The height of the two ends of the base frame (31) is smaller than that of the middle part, and a sliding groove (8) is provided on the front side wall of the middle part of the base frame (31), and the sliding groove (8) is located on the front side of the center line of the upper wall of the base frame (31). The upper wall of the base frame (31) is provided with a plurality of mounting threaded holes at equal intervals, and the mounting threaded holes are located on the rear side of the center line. The base frame (31) can be detachably mounted on the lower wall of the first box body (11) and is located at the front end. The sliding groove (8) is located on the front side of the first box body (11). The movable seat (32) is movably embedded in the lower wall of the first box body (11). The movable seat (32) is mounted in the sliding groove (8), and the movable seat (32) cannot be separated from the base frame (31); one end of the support arm (33) is movably arranged on the front side wall of the right end of the second box body; the other end of the support arm (33) is tilted to the left and movably connected to the movable seat (32); one end of the first hydraulic cylinder (34) is movably arranged on the front side wall of the right end of the base frame (31); the first hydraulic cylinder (34) is located on the right side of the sliding groove (8); the other end of the first hydraulic cylinder (34) is tilted and movably connected to the support arm (33).

4. The hydraulic luggage box assembly for a car trunk according to claim 3, characterized in that: The support arm (33) is L-shaped, and one end of the support arm (33) is thicker than the other end.

5. The hydraulic luggage box assembly for a car trunk according to claim 4, characterized in that: The sliding cover structure (4) comprises a box cover (41), a docking seat (42), a bracket (43) and a second hydraulic cylinder (44); The box cover (41) is rectangular, and the lower walls at both ends of the box cover (41) are provided with claws that fit into the cover groove. The box cover (41) is movably mounted on the second box body (13), and the claws are movably mounted in the cover groove. The docking seat (42) is L-shaped, and one end of the docking seat (42) is detachably mounted on the front side wall of the box cover (41). One end of the bracket (43) is fixedly mounted on the left front side wall of the second box body (13). One end of the second hydraulic cylinder (44) is fixedly mounted on the other end of the bracket (43), and the telescopic end of the second hydraulic cylinder (44) is connected to the other end of the docking seat (42).

6. The hydraulic luggage box assembly for a car trunk according to claim 5, characterized in that: The left and right ends of the box cover (41) are respectively fitted on the wall edges of the second installation groove (7), and the length of the box cover (41) is less than the length of the front side wall of the second box body (13).

7. The hydraulic luggage box assembly for a car trunk according to claim 6, characterized in that: The upper wall edge of the first box body (11) is close to the lower wall edge of the second box body (13), and the first side panel (14) is folded relative to each other through the adapter seat (15) and is located between the first box body (11) and the second box body (13).

8. The hydraulic luggage box assembly for a car trunk according to claim 7, characterized in that: The top end of the side bottom plate (21) movably passes through the second installation groove (7), and the side top plate (22) is folded relative to each other.

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