A car trunk lid structure

Abstract

This invention discloses a car trunk cover structure, belonging to the field of automotive component technology. It includes a cover unit and a support unit. The cover unit is formed by the movable connection of a sliding and retractable mother plate assembly and a daughter plate assembly. The support unit includes a transmission assembly, a cable assembly, and a rotating bracket assembly, all located on both sides of the mother plate. The daughter plate is slidably assembled in the transmission assembly. The cable assembly contains an elastically wound cable, one end of which is connected to the rotating bracket assembly, and the other end of the rotating bracket is rotatably connected to the inner wall of the trunk. This invention allows the cover to flexibly switch between a fully partitioned and retracted state through the sliding cooperation between the mother plate and the daughter plate, avoiding obstruction of the rearview mirror view while retaining the physical isolation function. The support unit integrates the transmission and cable assemblies. Utilizing the magnetic adsorption of the slider and the elastic sheet, and the locking cooperation of the top rod, it automatically triggers the lowering of the cover to press against the luggage, expanding the loading space and suppressing shaking, achieving flexible opening and closing and stable locking, making operation convenient and reliable.

Description

Technical Field

[0001] This invention belongs to the field of automotive component technology, specifically relating to a structure for an automotive trunk cover. Background Technology

[0002] A car trunk lid is a movable partition in the luggage compartment that seals off the contents of the luggage box.

[0003] Existing car trunk lid structures are usually fixed rigid partitions. When the trunk needs to load tall items, the fixed lid will be pushed upwards, forming an upward tilt, which will seriously obstruct the driver's view of the rear window area through the rearview mirror, creating a blind spot and greatly increasing driving safety hazards.

[0004] If the cover is completely removed to free up space, the problem of obstruction is solved, but during vehicle operation, especially during emergency braking, items in the luggage compartment will lose their effective physical barrier and are very likely to rush into the passenger compartment, causing impact injuries to the occupants. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a car trunk cover structure to solve the problems mentioned in the background.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A car trunk cover structure includes a cover unit and a support unit; The cover plate unit is provided with a mother plate assembly and a daughter plate assembly that are movably connected, and the daughter plate assembly slides and retracts to one side of the mother plate assembly; The support unit includes a transmission assembly and a cable assembly. Both the transmission assembly and the cable assembly are fixedly installed on both sides of the mother plate assembly, and the daughter plate assembly is slidably assembled in the transmission assembly. The cable assembly is provided with an elastically wound rope inside. The support unit also includes a rotating frame assembly, one end of which is fixedly connected to the cable assembly, and the other end of which is rotatably connected to the inner wall of the car's luggage compartment.

[0007] As a further embodiment of the present invention, the mother plate assembly includes a mother plate, side grooves, positioning holes and shafts. Side grooves are provided on both sides of the mother plate, and a plurality of positioning holes are arranged along one side of the side grooves. The mother plate is fixedly assembled on the shafts.

[0008] As a further embodiment of the present invention, the sub-plate assembly includes a sub-plate, a positioning pin, a pin seat, a connecting block, a rotating seat, and a slider. The sub-plate is positioned and assembled on a plurality of positioning holes. Positioning pins and pin seats are provided on both sides of the sub-plate. The pin seat is rotatably connected to the connecting block at its end. One end of the rotating seat is rotatably connected to the connecting block, and the other end of the rotating seat is fixedly connected to the slider. The slider is limited and slidably arranged in the transmission assembly.

[0009] As a further embodiment of the present invention, the transmission assembly includes a housing, a pin hole, an insertion port, a slide groove, an elastic sheet, and a spring block. One end of the housing is provided with a pin hole, the insertion port is arranged near the pin hole, and a slide groove is fixedly arranged inside the housing. The slider is limited and slidably assembled on the slide groove. An elastic sheet is elastically slidably inserted into the other end of the housing, and the spring block is elastically slidably arranged on the slide groove.

[0010] As a further embodiment of the present invention, the transmission assembly further includes a push rod, a locking groove, a clearance groove, and a push rod. The push rod is fixedly disposed at the end of the elastic plate, and a locking groove protrudes from the push rod. A clearance groove is provided at the bottom of the locking groove. A push rod is also fixedly connected to the end of the push rod.

[0011] As a further embodiment of the present invention, the cable assembly includes a cylindrical shell, an inner cylinder, a rotating cylinder, alignment holes, a spool, a baffle plate, and a groove. The cylindrical shell is fixedly installed at both ends of the shaft, the inner cylinder is fixedly installed in the cylindrical shell, the rotating cylinder is coaxially rotatably installed in the inner cylinder and is connected to the inner cylinder by a torsion spring, and a plurality of alignment holes are arranged in an array on one side of the rotating cylinder; one end of the spool is fixedly connected to the cylindrical shell, and the other end of the spool passes through the rotating cylinder, a baffle plate is arranged on one side of the rotating cylinder, and a groove is provided on the baffle plate on one side.

[0012] As a further embodiment of the present invention, the cable assembly further includes a locking housing, a plug-in interface, and a locking groove. The locking housing is fixedly disposed on one side of the cylindrical shell and facing the transmission assembly. The plug-in interface is disposed at one end of the locking housing, and the locking groove is elastically slidably inserted into the locking housing.

[0013] As a further embodiment of the present invention, the rotating frame assembly includes a cover plate, a side arm, a fixed-axis housing, and a cable. The cover plate is fixedly installed on the cylindrical shell, one end of the side arm is fixedly installed on the cover plate, and the other end of the side arm is movably provided with the fixed-axis housing. One end of the cable is fixedly connected to the fixed-axis housing, and the other end of the cable passes through the cover plate and the side arm. The end of the cable is fixedly connected to the alignment hole.

[0014] As a further embodiment of the present invention, the rotating frame assembly further includes a turntable, a limiting tooth, a support, a locking tooth plate, a lead wire port, and a transmission shaft. The turntable is rotatably mounted on one side of the cover plate, and a limiting tooth is provided on the outer diameter of the turntable. The support is fixedly mounted on the cover plate. The locking tooth plate is elastically slidably assembled on the support. One end of the locking tooth plate is movably abutting against the push rod, and the other end of the locking tooth plate is engaged with the limiting tooth. A lead wire port is also coaxially provided on one side of the limiting tooth. Several transmission shafts are arranged circumferentially on the lead wire port, and several of the transmission shafts are movably inserted into the alignment holes.

[0015] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art: The car trunk cover structure achieves a balance between space utilization and safety protection through the design of a retractable cover unit. Specifically, the mother panel assembly and the daughter panel assembly slide together, allowing the cover to flexibly switch between a fully partitioned state and a retracted state. When large luggage needs to be loaded, the daughter panel can smoothly retract to one side of the mother panel, significantly reducing the cover area and preventing it from tilting up and obstructing the rearview mirror view due to the luggage top, thereby reducing blind spots while driving. At the same time, the structure retains the physical isolation function of the luggage compartment, ensuring that luggage will not rush into the passenger compartment during emergency braking. Furthermore, the support unit of this solution integrates transmission and cable components, enabling intelligent adjustment of the cover's posture. Through the magnetic adsorption linkage between the slider and the elastic plate, and the mechanical cooperation between the top rod and the locking groove, the extension and retraction of the sub-plate can automatically trigger the locking and release of the cable. When the cover retracts, the rotating frame assembly drives the cover to swing downward under the action of the elastic element, flexibly pressing it against the luggage surface. This not only expands the vertical loading space of the luggage compartment but also effectively suppresses luggage shaking through elastic pressure, significantly improving the stability of the load during vehicle operation. Furthermore, the structure adopts a coaxial winding cable design and a multi-stage locking mechanism to ensure the convenience of the adjustment process. The coaxial torsion spring reset mechanism of the rotary drum and the spool realizes the automatic winding and unwinding of the cable. The cooperation between the locking tooth plate and the limiting tooth ensures the stable locking of the cover plate in the non-working state. The overall mechanism is easy to operate and highly reliable through linkage design, providing an efficient space management solution for the car luggage compartment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a car trunk cover structure provided in one embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the mother plate assembly in a car trunk cover structure provided in one embodiment of the present invention.

[0018] Figure 3This is a schematic diagram of the pin hole structure in a car trunk cover structure provided in one embodiment of the present invention.

[0019] Figure 4 for Figure 3 Enlarged schematic diagram of reference numeral A in the attached figure.

[0020] Figure 5 This is a schematic diagram of the transmission component in a car trunk cover structure provided in one embodiment of the present invention.

[0021] Figure 6 This is a partial structural diagram of the transmission component in a car trunk cover structure provided in one embodiment of the present invention.

[0022] Figure 7 This is a side view of a car trunk cover structure provided in one embodiment of the present invention.

[0023] Figure 8 for Figure 7 Enlarged schematic diagram of reference numeral B in the attached figure.

[0024] Figure 9 This is a partial cross-sectional view of the rotating frame assembly in a car trunk cover structure provided in one embodiment of the present invention.

[0025] Figure 10 This is a schematic diagram of another perspective of the rotating frame assembly in the car trunk cover structure provided in one embodiment of the present invention.

[0026] Figure label: 1-Mother plate assembly, 101-Mother plate, 102-Side groove, 103-Positioning hole, 104-Shaft; 2-Sub-board assembly, 201-Sub-board, 202-Positioning pin, 203-Pin seat, 204-Connecting block, 205-Rotating seat, 206-Slider; 3-Transmission assembly, 301-Housing, 302-Pin hole, 303-Insertion port, 304-Slide groove, 305-Elastic sheet, 306-Spring block, 307-Pressure plate, 308-Guide groove, 309-Push rod, 310-Locking groove, 311-Allowing groove, 312-Push rod; 4-Cable assembly, 401-Shell, 402-Inner cylinder, 403-Rotating cylinder, 404-Alignment hole, 405-Spool, 406-Baffle, 407-Wire groove, 408-Locking housing, 409-Insertion interface, 410-Locking groove; 5-Spinning frame assembly, 501-Cover plate, 502-Side arm, 503-Fixed shaft housing, 504-Cable, 505-Turntable, 506-Limiting tooth, 507-Support, 508-Locking tooth plate, 509-Leading wire port, 510-Drive shaft rod. Detailed Implementation

[0027] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Please see Figures 1-10 According to one embodiment of the present invention, a car trunk cover structure has opposing first directions x, second directions y, and third directions z. The car trunk cover structure includes a cover unit and a support unit. A mother plate assembly 1 and a daughter plate assembly 2 are movably connected within the cover unit. The daughter plate assembly 2 slides and retracts to one side of the mother plate assembly 1. The support unit includes a transmission assembly 3 and a cable assembly 4. Both the transmission assembly 3 and the cable assembly 4 are fixedly installed on both sides of the mother plate assembly 1, and the daughter plate assembly 2 is slidably assembled to the transmission assembly 1. In the moving component 3, the cable assembly 4 has an elastically wound rope inside; the support unit also includes a rotating frame assembly 5, one end of which is fixedly connected to the cable assembly 4, and the other end of which is rotatably connected to the inner wall of the car's luggage compartment; the mother plate assembly 1 includes a mother plate 101, side grooves 102, positioning holes 103, and a shaft 104. The mother plate 101 has side grooves 102 on both sides, and a plurality of positioning holes 103 are arranged along one side of the side grooves 102. The mother plate 101 is fixedly mounted on the shaft 104.

[0029] In practical application, the car trunk cover structure is rotatably mounted on both side walls of the trunk cavity, forming an adjustable pressing structure. The cover unit is mainly composed of a mother plate assembly 1 and a daughter plate assembly 2. The mother plate assembly 1 serves as the basic load-bearing component, with transmission components 3 fixedly installed at both ends along its length. The two ends of the daughter plate assembly 2 are slidably arranged in the transmission components 3 on both sides. Through this sliding guide mechanism, the daughter plate assembly 2 can achieve linear displacement relative to the mother plate assembly 1, thus having a relative extended state and a retracted state. When the daughter plate assembly 2 is in the fully extended state, the load-bearing surfaces of the mother plate assembly 1 and the daughter plate assembly 2 are coplanar, forming a rigid isolation baffle structure. This baffle forms a physical barrier between the trunk and the passenger compartment, effectively preventing items loaded in the trunk from rushing forward into the passenger compartment during vehicle operation due to rapid acceleration, deceleration, or bumps, thereby ensuring the safety of the occupants.

[0030] In real-world scenarios, when transporting large luggage items, the limited vertical or longitudinal space inside the luggage compartment often causes the luggage to push upwards against the cover structure, causing it to tilt upwards around the pivot point and form an upward-curving posture. In this state, the cover partially obstructs the driver's rearview mirror view in the rear window area, significantly increasing blind spots and safety risks during driving. If the cover is removed directly, although space can be freed up, items in the luggage compartment are very likely to break through the original boundaries and rush into the passenger compartment under emergency braking conditions, causing impact injuries to the occupants, which also constitutes a serious safety hazard.

[0031] This structure slides the sub-plate assembly 2 towards the mother plate assembly 1, causing it to retract to one side of the mother plate assembly 1, thus reducing the overall projected area of ​​the cover. When the sub-plate assembly 2 slides to the preset dead point position, it can be securely locked to the transmission assembly 3 by the built-in locking mechanism, maintaining the retracted state. The positioning action of the sub-plate assembly 2 will trigger the unlocking of the locking structure between the transmission assembly 3 and the cable assembly 4, allowing the pre-wound flexible cable inside the cable assembly 4 to be passively released to a preset length under the action of external force. One end of the rotating frame assembly 5 is rotatably mounted on the inner side wall or bottom structure of the luggage compartment through a hinged support to form a rotation fulcrum, and the other end is connected to the... The cables released from the cable assembly 4 are movably connected to form a flexible traction. After the cover plate is folded and retracted, the whole can swing downward and elastically press against the top surface of the luggage object below under the elastic pre-tension force or torsion spring of the rotating frame assembly 5. At this time, the cover plate remains in an approximately horizontal state, which can avoid obstructing the driver's rear view on the one hand, and effectively expand the usable loading volume of the luggage compartment by pressing and fixing it, making it easier to accommodate tall luggage items. At the same time, this pressing action can suppress the shaking, tipping or disorderly collision of luggage during vehicle operation, improve the stability of fixing large luggage, and ensure driving safety.

[0032] Please see Figure 4 In a preferred embodiment of the present invention, the sub-plate assembly 2 includes a sub-plate 201, a positioning pin 202, a pin seat 203, a connecting block 204, a rotating seat 205, and a slider 206. The sub-plate 201 is positioned and assembled on a plurality of positioning holes 103. Positioning pins 202 and pin seats 203 are provided on both sides of the sub-plate 201. The end of the pin seat 203 is rotatably connected to the connecting block 204. One end of the rotating seat 205 is rotatably connected to the connecting block 204, and the other end of the rotating seat 205 is fixedly connected to the slider 206. The slider 206 is slidably arranged in the transmission assembly 3.

[0033] In practical application, the positioning pin 202 is arranged facing the pin hole 302 on the side of the housing 301. When the sub-plate assembly 2 is in a fully extended state, the slider 206 can be linearly displaced along the negative x-axis by manually pulling the sub-plate 201. During the movement, the slider 206 will form abutment contact with the spring block 306 and continuously apply force to push the spring block 306 to overcome the preload of the elastic element and slide. When the sub-plate 201 continues to slide along the negative x-axis to the preset stroke position, the positioning pin 202 will accurately insert. Insert the pin into the pin hole 302 to achieve mechanical locking, thereby keeping the mother plate 101 and the daughter plate 201 in a stable locked state on the same plane. Conversely, by manually pulling the daughter plate 201 to move it in the negative x-axis direction, while applying an upward lifting force to make the daughter plate 201 vertically displace in the positive z-axis direction, the daughter plate 201 can be moved to the position on the upper surface of the mother plate 101. Then, by pushing the daughter plate 201 to move it in the positive x-axis direction, it can be smoothly slid along the guide mechanism, and finally the daughter plate 201 is retracted and reset to the storage position on one side of the mother plate 101.

[0034] Please see Figure 3 and Figure 5 In a preferred embodiment of the present invention, the transmission component 3 includes a housing 301, a pin hole 302, an insertion port 303, a slide groove 304, an elastic sheet 305, and a spring block 306. One end of the housing 301 is provided with a pin hole 302, the insertion port 303 is arranged near the pin hole 302, and the slide groove 304 is fixedly arranged inside the housing 301. The slider 206 is limited and slidably assembled on the slide groove 304. The other end of the housing 301 is elastically slidably inserted with an elastic sheet 305, and the spring block 306 is elastically slidably arranged on the slide groove 304. The pressure plate 307 is fixedly assembled on the housing 301, and the pressure plate 307 is provided with a guide groove 308 aligned with the insertion port 303.

[0035] In practical application, the housing 301 has a pin hole 302 on one side for locking the sub-plate 201, ensuring that the sub-plate 201 remains fixed in the non-working state. An insertion port 303 is provided on the same side of the pin hole 302, which aligns with the guide groove 308 on the pressure plate 307 fixedly mounted on one side of the housing 301, thus forming a continuous motion guide. The slider 206 is slidably installed in a pre-set groove 304 on the housing 301. When the slider 206 slides along a predetermined trajectory in the groove 304, the connecting block 204 connected to the slider 206 bends and slides along the guide groove 308, thereby achieving the relative movement of the sub-plate 201 with respect to the guide groove 308. The controllable displacement movement of the upper surface of the mother plate 101 is further supported by an elastic plate 305 fixedly installed at the end of the housing 301. When the operator manually pulls the sub-plate 201 to make linear displacement along the positive x-axis, the sub-plate 201 drives the slider 206 to slide in the same direction until the slider 206 moves to the limit position of the slide groove 304. At this time, the slider 206 contacts the elastic plate 305 and applies a driving force, pushing the elastic plate 305 to undergo elastic deformation displacement in the positive x-axis direction. During the displacement process, the elastic plate 305 is linked to the top rod 309 set on one side, driving the top rod 309 to move axially, thereby triggering the locking mechanism integrated inside the cable assembly 4, realizing automatic locking control of the working state of the cable assembly 4.

[0036] Furthermore, the transmission assembly 3 also includes a push rod 309, a locking groove 310, a clearance groove 311, and a push rod 312. The push rod 309 is fixedly disposed at the end of the elastic sheet 305, and the locking groove 310 protrudes from the push rod 309. The bottom of the locking groove 310 is provided with a clearance groove 311. The push rod 312 is also fixedly connected to the end of the push rod 309. The locking groove 310 is constructed on one side of the push rod 309. The locking groove 310 extends along the x-axis direction and is used to cooperate with the locking mechanism to limit the translational freedom of the push rod 309 in the x-axis direction, thereby achieving precise positioning and locking of it at a preset position. A clearance groove 311 is further provided at the bottom of the locking groove 310. The opening direction and depth of the clearance groove 311 are set to ensure that it is coplanar with the lateral surface of the push rod 309 in the x-axis direction to avoid interference with adjacent moving parts, and at the same time provide necessary space for the locking element to enter and exit. The push rod 312 is connected to the driving element through a special-shaped connecting arm. The axial direction of the push rod 312 corresponds to the locking structure action point of the cable assembly 4, and synchronously triggers the locking mechanism integrated in the cable assembly 4 to release or limit the tension adjustment state of the cable, ensuring reliable locking under dynamic working conditions.

[0037] Furthermore, both the slider 206 and the elastic sheet 305 are equipped with magnetic elements. Specifically, a first magnetic body is fixed to a designated mounting surface of the slider 206, and a second magnetic body is fixed to a corresponding area of ​​the elastic sheet 305. The first and second magnetic bodies are configured to achieve close adsorption through magnetic attraction after the slider 206 and the elastic sheet 305 move towards each other and make physical contact, thereby ensuring that the slider 206 and the elastic sheet 305 maintain a stable fit in the contact state.

[0038] Please see Figure 8 In a preferred embodiment of this invention, the cable assembly 4 includes a cylindrical shell 401, an inner cylinder 402, a rotating cylinder 403, alignment holes 404, a bobbin 405, a baffle plate 406, and a cable groove 407. The cylindrical shell 401 is fixedly installed at both ends of the shaft 104. The inner cylinder 402 is fixedly installed in the cylindrical shell 401. The rotating cylinder 403 is coaxially rotatably installed in the inner cylinder 402 and is connected to the inner cylinder 402 by a torsion spring. A plurality of alignment holes 404 are arranged in an array on one side of the rotating cylinder 403. One end of the bobbin 405 is fixedly connected to the cylindrical shell 401, and the other end of the bobbin 405 passes through the rotating cylinder 403. A baffle plate 406 is arranged on one side of the rotating cylinder 403, and a cable groove 407 is provided on one side of the baffle plate 406.

[0039] In practical application, the cylindrical shell 401 is fixedly assembled to the shaft 104 on the mother plate 101 through the pre-set mounting holes on both sides, forming a fixed support for the overall mechanism. Inside the cylindrical shell 401, the rotary cylinder 403 is rotatably installed in the inner cylinder 402 through a torsion spring. The torsion spring is sleeved at the connection between the rotary cylinder 403 and the inner cylinder 402 to provide a continuous elastic reset torque. When the rotary cylinder 403 is driven by an external force to rotate, it will overcome the elastic resistance generated by the torsion spring, allowing the torsion spring to store elastic potential energy. When the external force is removed, under the action of the torsion spring releasing elastic potential energy, the rotary cylinder 403 can automatically rotate back to the initial position, realizing the reset function. A bobbin 405 is fixedly installed at the axis of the internal cavity of the cylindrical shell 401. The axis of the bobbin 405 coincides with the axis of rotation of the rotary drum 403 and is inserted into the inner cavity of the rotary drum 403 to form a coaxial sleeve structure. The beginning end of the cable 504 is fixedly connected to the outer circumference of the bobbin 405. The main body of the cable 504 is wound in an orderly manner in the winding groove of the bobbin 405. When the rotary drum 403 rotates relative to the cylindrical shell 401, since the bobbin 405 is fixed, the rotation of the rotary drum 403 will drive the cable 504 to produce relative displacement along the axial direction of the bobbin 405, thereby realizing the function of gradually releasing the cable 504 from the surface of the bobbin 405 or winding it back onto the bobbin 405.

[0040] Furthermore, a baffle 406 is provided at the end of the cylindrical shell 401. The baffle 406 has an annular structure and is fixedly installed at the end of the spool 405. Its radial dimension is larger than the outer diameter of the spool 405. It is used to effectively limit the cable 504 from slipping off the end of the spool 405 during winding or unwinding, ensuring that the cable 504 always runs within the effective winding area of ​​the spool 405. A groove 407 is provided axially on the side wall of the cylindrical shell 401. The groove 407 is a longitudinal channel penetrating the side wall of the cylindrical shell 401 to accommodate the cable 504 passing through it. When the rotary drum 403 rotates, the cable 504 can slide smoothly along the axial direction of the spool 405 under the guidance of the groove 407, thereby realizing the orderly winding and unwinding of the cable 504.

[0041] Furthermore, the cable assembly 4 also includes a locking housing 408, a plug interface 409, and a locking groove 410. The locking housing 408 is fixedly disposed on one side of the cylindrical shell 401 and faces the transmission assembly 3. The plug interface 409 is disposed at one end of the locking housing 408. The locking groove 410 is elastically slidably inserted into the locking housing 408. The plug interface 409 at one end of the locking housing 408 forms a clearance fit with the push rod 309. The push rod 309 is axially oriented... The device is slidably mounted within the insertion interface 409. When an external driving force acts on the elastic sheet 305 and causes it to deform elastically, driving the push rod 309 to move axially along the positive x-axis, the locking groove 310 on the push rod 309 moves synchronously with the push rod 309. After passing through the insertion interface 409, it forms mechanical interference with the stepped locking structure of the locking groove 410. The recessed part of the locking groove 310 and the protruding part of the locking groove 410 engage with each other, thereby locking the device. The elastic plate 305, with its resetting motion tendency applied along the negative x-axis, provides a limiting effect, locking the position of the push rod 309 in its extended state. When it is necessary to release the locking state between the locking groove 310 and the locking groove 410, since the locking groove 410 is slidably installed in the internal guide groove of the locking housing 408 along the z-axis via an elastic sliding mechanism, the operator applies a displacement driving force along the negative z-axis to the locking housing 408, causing the locking groove 410 to slide relative to the locking housing 408 along the negative z-axis until the locking groove 410 moves to the corresponding position of the clearance groove 311. At this time, the contact interference between the locking groove 310 and the locking groove 410 is released, and the locking groove 310 loses the limiting constraint of the locking groove 410. Under the release of the elastic potential energy stored in the elastic plate 305, the push rod 309 is driven to automatically reset and move along the negative x-axis, and the locking groove 310 returns to its initial position, completing the unlocking and reset process.

[0042] Please see Figure 9 and Figure 10In a preferred embodiment of the present invention, the rotating frame assembly 5 includes a cover plate 501, a side arm 502, a fixed-axis housing 503, and a cable 504. The cover plate 501 is fixedly mounted on the cylindrical shell 401. One end of the side arm 502 is fixedly mounted on the cover plate 501, and the other end of the side arm 502 is movably provided with the fixed-axis housing 503. One end of the cable 504 is fixedly connected to the fixed-axis housing 503, and the other end of the cable 504 passes through the cover plate 501 and the side arm 502. The end of the cable 504 is fixedly connected to the alignment hole 404.

[0043] In practical application, the cover plate 501 is fixedly installed at the end of the cylindrical shell 401, and a side arm 502 is also fixedly assembled on one side of the cover plate 501. One end of the cable 504 is fixedly connected to the fixed shaft housing 503, and the other end of the cable 504 passes through the inside of the cover plate 501 and the side arm 502 in sequence, and after passing through the preset wire groove 407, it is finally fixedly connected to the spool 405, so that the side arm 502 can achieve a separable engagement state relative to the fixed shaft housing 503. When the insertion port 303 is subjected to external rotational torque, the torque is transmitted through the structure, causing the cover plate to undergo elastic deformation during rotation, thereby elastically pressing against the surface of the luggage and achieving a stable fixing effect on the luggage. When the cover plate is released, the rotational torque accumulated at the insertion port 303 is released and reacts on the cable 504, causing it to gradually wind back onto the spool 405 under tension, thereby driving the side arm 502 to be repositioned and inserted into the fixed shaft housing 503, so that the cover plate and its related components return to the initial closed state.

[0044] Furthermore, the rotating frame assembly 5 also includes a turntable 505, a limiting tooth 506, a support 507, a locking tooth plate 508, a lead wire port 509, and a drive shaft 510. The turntable 505 is rotatably mounted on one side of the cover plate 501, and the limiting tooth 506 is provided on the outer diameter of the turntable 505. The support 507 is fixedly mounted on the cover plate 501. The locking tooth plate 508 is elastically slidably assembled on the support 507. One end of the locking tooth plate 508 is movably abutting against the push rod 312, and the other end of the locking tooth plate 508 is engaged with the limiting tooth 506. A lead wire opening 509 is coaxially provided on one side of the limiting tooth 506. Several drive shafts 510 are circumferentially arranged on the lead wire opening 509, and these drive shafts 510 are movably inserted into the alignment holes 404. Several limiting teeth 506 are evenly distributed on the outer edge of the turntable 505. In the default initial state, the locking tooth plate 508 on one side is held in place by the reset elastic force provided by the elastic element, keeping its locking end engaged in the tooth groove of the limiting tooth 506, thereby restricting the turntable 505 from rotating around its axis and keeping it locked. In the stopped state, when the push rod 312 in the drive mechanism is driven by an external force to slide along its axial direction, its front end will abut against the force-bearing surface of the locking tooth plate 508, and overcome the elastic force to push the locking tooth plate 508 to slide along the guide groove of the support 507, thereby causing the locking end of the locking tooth plate 508 to completely disengage from the tooth groove of the limiting tooth 506, releasing the locking constraint on the turntable 505. The end structure of the limiting tooth 506 is a lead-in port 509, and multiple transmission shafts 510 are arranged circumferentially at the position of the lead-in port 509. The ends of the drive shaft 510 are respectively inserted into the alignment holes 404 opened on the end face of the rotary drum 403, thereby establishing a transmission connection. When the locking state of the turntable 505 is released, its rotational motion can be transmitted to the rotary drum 403 through the meshing of the drive shaft 510 and the alignment holes 404, so that the rotary drum 403 switches from the initial locked state to a freely rotatable working state, and further drives the side arm 502 to generate a relative rotational displacement relative to the fixed shaft housing 503, and finally realizes the separation action of the side arm 502 and the fixed shaft housing 503.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A car trunk cover structure, characterized in that, include: Cover plate unit and support unit; The cover plate unit is provided with a mother plate assembly and a daughter plate assembly that are movably connected, and the daughter plate assembly slides and retracts to one side of the mother plate assembly; The support unit includes a transmission assembly and a cable assembly. Both the transmission assembly and the cable assembly are fixedly installed on both sides of the mother plate assembly, and the daughter plate assembly is slidably assembled in the transmission assembly. The cable assembly is provided with an elastically wound rope inside. The support unit also includes a rotating frame assembly, one end of which is fixedly connected to the cable assembly, and the other end of which is rotatably connected to the inner wall of the car's luggage compartment.

2. The automobile trunk cover structure according to claim 1, characterized in that, The mother plate assembly includes a mother plate, side grooves, positioning holes, and shafts. The mother plate has side grooves on both sides and several positioning holes arranged along one side of the side grooves. The mother plate is fixedly assembled onto the shafts.

3. The automobile trunk cover structure according to claim 2, characterized in that, The sub-plate assembly includes a sub-plate, positioning pins, pin seats, connecting shaft blocks, rotating seats, and sliders. The sub-plate is positioned and assembled on several positioning holes. Positioning pins and pin seats are provided on both sides of the sub-plate. The end of the pin seat is rotatably connected to the connecting shaft block. One end of the rotating seat is rotatably connected to the connecting shaft block, and the other end of the rotating seat is fixedly connected to the slider. The slider is limited and slidably arranged in the transmission assembly.

4. The automobile trunk cover structure according to claim 3, characterized in that, The transmission assembly includes a housing, a pin hole, an insertion port, a slide groove, an elastic sheet, and a spring block. The housing has a pin hole at one end, the insertion port is located near the pin hole, and the slide groove is fixedly arranged inside the housing. The slider is limited and slidably assembled on the slide groove. An elastic sheet is slidably inserted into the other end of the housing, and the elastic block is elastically slidably arranged on the sliding groove.

5. The automobile trunk cover structure according to claim 1, characterized in that, The transmission assembly also includes a push rod, a locking groove, a clearance groove, and a push rod. The push rod is fixedly disposed at the end of the elastic plate, and a locking groove protrudes from the push rod. A clearance groove is provided at the bottom of the locking groove. A push rod is also fixedly connected to the end of the push rod.

6. The automobile trunk cover structure according to claim 2, characterized in that, The cable assembly includes a cylindrical shell, an inner cylinder, a rotary cylinder, alignment holes, a bobbin, baffles, and a groove. The cylindrical shell is fixedly installed at both ends of the shaft, the inner cylinder is fixedly installed in the cylindrical shell, and the rotary cylinder is coaxially rotatably installed in the inner cylinder and connected to the inner cylinder by a torsion spring. A number of alignment holes are also arranged in an array on one side of the rotary cylinder. One end of the spool is fixedly connected to the cylindrical shell, and the other end of the spool passes through the rotary drum. A baffle is also provided on one side of the rotary drum, and a wire groove is also provided on the baffle on one side.

7. The automobile trunk cover structure according to claim 6, characterized in that, The cable assembly also includes a locking housing, a plug-in interface, and a locking groove. The locking housing is fixedly arranged on one side of the cylindrical shell and facing the transmission assembly. The plug-in interface is arranged at one end of the locking housing. The locking groove is elastically slidably inserted into the locking housing.

8. The automobile trunk cover structure according to claim 6, characterized in that, The rotating frame assembly includes a cover plate, a side arm, a fixed-axis housing, and a cable. The cover plate is fixedly installed on the cylindrical shell, one end of the side arm is fixedly installed on the cover plate, and the other end of the side arm is movably provided with the fixed-axis housing. One end of the cable is fixedly connected to the fixed-axis housing, and the other end of the cable passes through the cover plate and the side arm. The end of the cable is fixedly connected to the alignment hole.

9. A car trunk cover structure according to claim 8, characterized in that, The rotating frame assembly also includes a turntable, limiting teeth, a support, a locking tooth plate, a lead wire port, and a transmission shaft. The turntable is rotatably mounted on one side of the cover plate, and limiting teeth are provided on the outer diameter of the turntable. The support is fixedly mounted on the cover plate. The locking tooth plate is elastically slidably assembled on the support. One end of the locking tooth plate is movably abutting against the push rod, and the other end of the locking tooth plate is engaged with the limiting teeth. A lead wire port is also coaxially provided on one side of the limiting teeth. Several transmission shafts are arranged circumferentially on the lead wire port, and several of the transmission shafts are movably inserted into the alignment holes.

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