Automobile seat magnetic attraction interface structure and working method thereof

Abstract

The application relates to a magnetic attraction interface structure of an automobile seat, which comprises an interface mounting seat (1), the inside space of the interface mounting seat (1) constitutes a placing cavity (11), the opening of the placing cavity (11) is provided with a mounting seat cover plate (2), one side of the mounting seat cover plate (2) close to the placing cavity (11) is provided with a rotary cover plate structure (3), one end of the rotary cover plate structure (3) close to the placing cavity (11) is provided with a magnetic attraction opening and closing structure (4), and the two sides of the rotary cover plate structure (3) are provided with connecting structures (5). The magnetic attraction force is used for controlling the rotary cover plate structure (3) to realize the functions of avoidance and reset locking during plug insertion and plug pulling, the user operation is simplified, the convenience level of the interface is improved, and the application has strong practicability.

Description

Technical Field

[0001] This invention belongs to the field of automotive seat structure design technology. Specifically, this invention relates to a magnetic interface structure for automotive seats and its working method. Background Technology

[0002] With the rapid development of new energy vehicles and smart cockpit technology, car seats are gradually evolving from traditional seats to multifunctional modular seats. These seats integrate data interfaces, power output plugs, and functional expansion docks to meet users' needs for charging portable devices, data interaction, and connecting personalized accessories. Currently, the structures used for interface protection on seats mostly employ manual flip-top covers or independent plug covers, requiring users to manually open them, which is inconvenient and easy to forget to close. Some structures using magnetic positioning are only used to assist in accessory alignment; their magnetic force is limited to horizontal adsorption and positioning, and cannot drive the opening or closing of the interface cover, nor can they utilize magnetic force to achieve linkage control between interface opening / closing and mechanical locking. Furthermore, existing interface covers cannot avoid the plug during insertion and cannot automatically reset after removal, affecting user experience and ease of use. To address these issues, there is an urgent need in this field for an integrated interface structure that can utilize magnetic force to control the interface cover during plug insertion and removal, achieving avoidance and reset locking, thereby simplifying user operation and improving the intelligence and convenience of the interface.

[0003] According to the inventor's search, a vehicle-mounted dual-interface USB device disclosed on March 7, 2023, includes: a power input interface; a data input interface; a data transmission processing chip; a power processing chip; and at least two USB interfaces. The power input interface is connected to a vehicle-mounted charging device, the data transmission interface is connected to a vehicle-mounted data transmission device, the power input interface is connected to the power processing chip, the data transmission processing chip is connected to the data input interface, and each USB interface is connected to both the power processing chip and the data processing chip. The cover of this interface structure needs to be manually opened during use, which is inconvenient. Summary of the Invention

[0004] This invention addresses the aforementioned problems and aims to provide a magnetic interface structure and its operating method that utilizes magnetic force to control the interface cover plate during plug insertion and removal, enabling unlocking and resetting locking. To achieve this objective, the technical solution adopted by this invention is as follows: A magnetic interface structure for an automotive seat includes an interface mounting base. The interior space of the interface mounting base forms a placement cavity. A mounting base cover is provided at the opening of the placement cavity. A rotating cover structure is provided on the side of the mounting base cover near the placement cavity. A magnetic opening and closing structure is provided at the end of the rotating cover structure near the placement cavity. Connecting structures are provided on both sides of the rotating cover structure.

[0005] The mounting base cover plate has an interface hole through the middle, and mounting plates are provided on both sides of the interface hole. The mounting plates are provided with mounting holes. The rotating cover plate structure includes an interface cover plate, which is disposed in the interface hole. The upper end of the interface cover plate is provided with a rotating shaft receiving column, and a rotating shaft is disposed in the rotating shaft receiving column. Both ends of the rotating shaft pass through the mounting holes.

[0006] The magnetic opening and closing structure includes a locking block. The locking block has a magnet receiving groove on the side near the interface cover plate. A magnet is placed in the magnet receiving groove. Guide plates are provided on both sides of the interface cover plate. A sliding guide groove is provided through the guide plate. A limiting opening groove is provided on the mounting plate at a position corresponding to the sliding guide groove. A locking block is provided at the upper end of the limiting opening groove. Sliding shafts are provided at both ends of the locking block. The ends of the sliding shafts pass through the sliding guide groove and extend into the limiting opening groove.

[0007] The lock block has a spring receiving groove in the middle, and a return spring is provided in the spring receiving groove. The rotating shaft receiving column has a spring fixing plate on the side near the spring receiving groove. The spring fixing plate has a first spring fixing hole in the middle, and a second spring fixing hole is provided at the lower end of the spring receiving groove. One end of the return spring is connected to the first spring fixing hole, and the other end of the return spring is connected to the second spring fixing hole.

[0008] The locking block has a limiting groove at one end near the interface cover plate. The interface cover plate has a limiting protrusion at the corresponding position of the limiting groove. The limiting protrusion extends from the upper surface of the interface cover plate to the side of the rotating shaft receiving column. The limiting protrusion is set in the limiting groove.

[0009] A torsion spring is fitted on the rotating shaft. One end of the torsion spring is connected to the mounting base cover plate, and the other end of the torsion spring is connected to the interface cover plate.

[0010] The mounting plate is provided with a connecting mounting seat on the side away from the guide plate. The interface mounting seat and the connecting mounting seat are provided with a groove at the corresponding positions. The bottom of the groove is provided with a connecting hole. The connecting structure includes a buckle. The buckle is provided with elastic cantilever arms on both sides. The buckle is located in the middle of the connecting mounting seat. The top of the connecting mounting seat extends into the groove. The outer side of the elastic cantilever arm is engaged with the connecting hole.

[0011] The interface mounting base has a clearance groove at one end away from the mounting base cover plate. The clearance groove is connected to the mounting cavity. Assembly holes are provided on both sides of the clearance groove. The assembly holes are used for assembling the interface mounting base with the vehicle body. A bolt fixing post is provided on one side of the assembly hole. The bolt fixing post is used for connecting and fixing the interface mounting base with the vehicle body.

[0012] The mounting base cover plate has an annular bright strip plate at one end away from the mounting cavity. The annular bright strip plate has a plastic welding piece at one end near the mounting base cover plate. The mounting base cover plate has a welding hole at the corresponding position of the plastic welding piece. The plastic welding piece passes through the welding hole and extends to the end of the welding hole away from the annular bright strip plate.

[0013] A method for operating a magnetic interface structure for a car seat is disclosed. During use, the interface cover is positioned at the interface hole of the mounting cover. The locking block is in a locked position under the action of a return spring. The sliding shafts at both ends of the locking block are located at the upper end of the limiting opening groove, and the sliding shafts are engaged between the locking block and the inner wall of the upper end of the limiting opening groove, restricting the interface cover from rotating around the shaft. When the metal component of the external plug approaches the interface cover, the magnet moves towards the plug under magnetic attraction. The magnet drives the locking block to move from the locked position to the unlocked position along the groove direction of the sliding guide groove. The sliding shafts move synchronously with the locking block and disengage from the locking block. The plug continues to be inserted along the interface hole direction and pushes against the interface cover plate. Under the action of the pushing force, the interface cover plate rotates around the rotating shaft to open. When the plug is pulled out, the torsion spring drives the interface cover plate to rotate around the rotating shaft to the interface hole until the interface cover plate rotates to the interface hole. When the plug is disengaged from the magnetic attraction area of ​​the magnet, the reset spring drives the locking block to reset from the unlocked position to the locked position. The sliding shaft moves synchronously in the sliding guide groove and the limiting opening groove until the sliding shaft returns to the upper end of the limiting opening groove and is engaged between the locking block and the inner wall of the upper end of the limiting opening groove. The interface cover plate returns to the locked state.

[0014] The technical advantages of this invention are as follows: This invention provides a magnetic interface structure for automotive seats, including an interface mounting base. The interior space of the mounting base forms a placement cavity. A mounting base cover is provided at the opening of the placement cavity. A rotating cover structure is provided on the side of the mounting base cover near the placement cavity. A magnetic opening and closing structure is provided at the end of the rotating cover structure near the placement cavity. Connecting structures are provided on both sides of the rotating cover structure. This structure, through the linkage between the magnetic opening and closing structure and the rotating cover structure, enables the interface cover to unlock and lock as the plug is inserted or removed. When a plug with metal protrusions approaches the interface, the magnet is attracted by the magnetic force, causing the locking block to move, disengaging the sliding shaft from the locking block. The plug then pushes against the interface cover, causing the interface cover to rotate and open around the pivot, eliminating the need for manual lifting. When the plug is removed, a torsion spring drives the interface cover to rotate and close. A return spring pulls the locking block back to its original position, causing the sliding shaft to re-engage with the locking block, restoring the locked state. The entire process requires only two actions: insertion and removal, eliminating the need for additional unlocking and simplifying the user experience. The structure employs a combination of mechanical locking and magnetic positioning. In standby mode, the sliding shaft engages with the locking block at the upper end of the limiting slot and the inner wall for mechanical locking. The sliding shafts at both ends of the locking block pass through both the sliding guide groove on the guide plate and the limiting slot on the mounting plate. The sliding guide groove constrains the translational trajectory of the locking block, allowing it to reciprocate only along the direction of the sliding guide groove. The limiting slot and the locking block together restrict the movement of the locking block in the locked state. The limiting groove on the locking block and the limiting protrusion on the interface cover further restrict the offset and rotation of the locking block in non-moving directions. The limiting protrusion acts as a reinforcing rib, improving the bending stiffness and structural strength of the rotating cover structure without significantly increasing wall thickness and weight, thus contributing to long-term operational stability. The return spring is housed within a spring receiving groove. The inner wall of the groove constrains the spring's deformation direction, reducing the likelihood of lateral bending or instability. Both ends of the return spring are fixed to the first and second spring fixing holes, respectively, improving the connection stability. A torsion spring is mounted on the rotating shaft to provide the rotational return force for the interface cover. The connection structure uses a snap-fit ​​design with elastic cantilever arms on both sides. The snap-fit ​​is located in the center of the mounting base, and the outer sides of the elastic cantilever arms engage with the connection holes, allowing for quick installation without bolts or tools. Disassembly is achieved by pressing the elastic cantilever arms inwards, facilitating maintenance and replacement. This quick-installation and quick-disassembly method improves production line assembly efficiency and after-sales maintenance convenience. The annular bright strip plate is fixed by passing a plastic welding piece through the welding hole on the mounting base cover and welding it to form a fixed connection. This connection strength is superior to snap-fit ​​or adhesive bonding and offers good stability. This structure offers high operational convenience, locking reliability, and assembly efficiency, effectively meeting users' needs for both protection and convenience of vehicle-mounted interfaces. Attached Figure Description

[0015] This manual includes the following figures, which illustrate the following: Figure 1 This is a schematic diagram of the overall structure of a magnetic interface structure for a car seat according to the present invention; Figure 2 This is a schematic diagram of the internal structure of a magnetic interface structure for a car seat according to the present invention; Figure 3 This is a schematic diagram of the rotating cover structure of a magnetic interface structure for a car seat according to the present invention; Figure 4 This is a schematic diagram of the magnetic opening and closing structure of a magnetic interface structure for a car seat according to the present invention; Figure 5 This is a rear view of the overall structure of a magnetic interface structure for a car seat according to the present invention. Figure 6 This is a schematic diagram of the mounting base for a magnetic interface structure for a car seat according to the present invention; Figure 7 This is a schematic diagram of the assembly of the mounting cover plate and the annular bright strip plate of the magnetic interface structure for a car seat according to the present invention; Figure 8 This is a schematic diagram of the locking block of a magnetic interface structure for a car seat according to the present invention; Figure 9 This is a schematic diagram of the snap fastener of a magnetic interface structure for a car seat according to the present invention; The markings in the diagram are as follows: 1. Interface mounting base; 11. Reservoir cavity; 12. Countersunk groove; 13. Connecting hole; 14. Clearance groove; 15. Assembly hole; 16. Bolt fixing post; 2. Mounting base cover plate; 21. Interface hole; 22. Mounting plate; 23. Mounting hole; 24. Limiting opening groove; 25. Locking block; 26. Welding hole; 3. Rotating cover plate structure; 31. Interface cover plate; 32. Shaft receiving post; 321. Shaft; 33. Spring fixing plate; 3 4. First spring fixing hole; 35. Limiting protrusion; 36. Torsion spring; 4. Magnetic opening and closing structure; 41. Locking block; 411. Sliding shaft; 42. Magnet; 43. Magnet receiving groove; 44. Guide plate; 45. Sliding guide groove; 46. Spring receiving groove; 461. Reset spring; 47. Second spring fixing hole; 48. Limiting groove; 5. Connecting structure; 51. Buckle; 52. Elastic cantilever; 6. Annular bright strip plate; 61. Plastic welding piece. Detailed Implementation

[0016] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and to facilitate its implementation.

[0017] like Figure 1 and Figure 6As shown, a magnetic interface structure for an automotive seat includes an interface mounting base 1. The internal space of the interface mounting base 1 forms a mounting cavity 11. A mounting base cover 2 is provided at the opening of the mounting cavity 11. A rotating cover structure 3 is provided on the side of the mounting base cover 2 near the mounting cavity 11. A magnetic opening and closing structure 4 is provided at the end of the rotating cover structure 3 near the mounting cavity 11. Connecting structures 5 are provided on both sides of the rotating cover structure 3. The interface mounting base 1 serves as a supporting frame, and its internal hollow area is constructed as a space for accommodating other structures and inserting plugs, i.e., the mounting cavity 11. The mounting base cover 2 covers the opening end of the mounting cavity 11, serving the dual purpose of sealing the internal structure and providing a space for installing other components. The rotating cover structure 3 is located inside the mounting base cover 2 and can swing around a predetermined axis. Under normal conditions, it closes the interface hole 21, reducing the entry of dust or foreign objects into the mounting cavity 11. The magnetic opening and closing structure 4 is arranged behind the rotating cover structure 3, forming a linkage with the rotating cover structure 3. It uses magnetic attraction to sense the approach of an external metal plug and triggers an opening action. The connecting structure 5 is symmetrically distributed on both sides of the rotating cover structure 3, and is used to connect the mounting base cover 2 and the interface mounting base 1. The interface mounting base 1, the mounting cavity 11, the mounting base cover 2, the rotating cover structure 3, the magnetic opening and closing structure 4, and the connecting structure 5 together constitute the overall basic structure, which improves the ease of operation of the interface; the modular design facilitates pre-assembly on the production line, improving assembly efficiency and consistency.

[0018] like Figure 1 , Figure 2 and Figure 7As shown, the mounting cover plate 2 has an interface hole 21 extending through the center, and mounting plates 22 are provided on both sides of the interface hole 21. Mounting plates 22 have mounting holes 23. The rotating cover structure 3 includes an interface cover plate 31, which is disposed within the interface hole 21. A rotating shaft receiving post 32 is provided at the upper end of the interface cover plate 31, and a rotating shaft 321 is disposed within the rotating shaft receiving post 32. Both ends of the rotating shaft 321 pass through the mounting holes 23. The interface hole 21 is located in the central area of ​​the mounting cover plate 2, and its opening profile conforms to the shape of the plug, providing necessary space for the plug to pass through when inserted. The periphery of the interface hole 21 has rounded corners to compensate for slight angular deviations when the plug is inserted, allowing the end to slide in smoothly. The mounting plates 22 are two vertical plates that extend vertically into the mounting cavity 11 from the two sides of the interface hole 21. The two mounting plates 22 are parallel to each other, providing a supporting base for the rotating shaft 321. Mounting holes 23 are located at the upper end of mounting plate 22, with their centers aligned on the same axis, and are used to accommodate the end of rotating shaft 321. Interface cover plate 31 is a flat plate whose shape matches interface hole 21. A protrusion on interface cover plate 31 at the corresponding position of interface hole 21 fills the step difference between interface cover plate 31 and mounting base cover plate. Rotating shaft receiving post 32 protrudes outward from the upper edge of interface cover plate 31, and has a through-hole. This hole aligns with mounting hole 23, allowing rotating shaft 321 to pass through. Rotating shaft 321 passes through the hole in rotating shaft receiving post 32, with its two ends extending into mounting holes 23 on both sides of mounting plate 22, forming a rotating pair, allowing interface cover plate 31 to swing around the axis of rotating shaft 321. The guide bevel of the interface hole 21 allows the plug to be inserted with a certain angular deviation, reducing the difficulty of alignment for users; the cooperation between the mounting plate 22 and the rotating shaft receiving post 32 enables the interface cover 31 to obtain a rotation axis, improving the consistency of its opening and closing movement trajectory; thereby reducing abnormal noise and jamming caused by rotational offset, and improving the operating feel and service life.

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the magnetic opening and closing structure 4 includes a locking block 41. A magnet receiving groove 43 is provided on the side of the locking block 41 near the interface cover plate 31. A magnet 42 is placed inside the magnet receiving groove 43. Guide plates 44 are provided on both sides of the interface cover plate 31. A sliding guide groove 45 is provided through the guide plate 44. A limiting opening groove 24 is provided on the mounting plate 22 at a position corresponding to the sliding guide groove 45. A locking block 25 is provided at the upper end of the limiting opening groove 24. Sliding shafts 411 are provided at both ends of the locking block 41. The ends of the sliding shafts 411 pass through the sliding guide groove 45 and extend into the limiting opening groove 24. The locking block 41 is a long strip-shaped component. The magnet receiving groove 43 is located on the side of the locking block 41 facing the interface hole 21, with the groove opening facing outwards. The magnet 42 is fixed in this groove to generate an attractive force acting on the metal plug. The guide plate 44 consists of ear plates extending from both sides of the interface cover plate 31, adjacent to and parallel to the mounting plate 22. Each guide plate 44 has an elongated oval sliding guide groove 45 extending along the movement direction of the locking block 41 to constrain the movement trajectory of the sliding shaft 411. A limiting opening groove 24 is correspondingly provided on the mounting plate 22. The bottom of the limiting opening groove 24 is parallel to the sliding guide groove 45, and the top is open. A locking block 25 is formed on the inner side of the upper end of the limiting opening groove 24, and the locking block 25 and the groove wall together constitute a limiting structure. The sliding shaft 411 is a cylindrical pin fixed to both ends of the locking block 41. Its outer end passes through both the sliding guide groove 45 and the limiting opening groove 24. The sliding shaft 411 slides within the sliding guide groove 45, while its end moves within the limiting opening groove 24. The locking block 25 is designed to allow the sliding shaft 411 to pass only in one direction, while blocking it in other directions, thus achieving mechanical locking. When the interface cover 31 is in the closed interface hole 21 state, the sliding shaft 411 is locked on one side of the locking block 25. At this time, the sliding shaft 411 cannot swing around the rotating shaft 321 and is in the locked position. When the sliding shaft 411 moves to the other end along the sliding guide groove 45, the sliding shaft 411 is released from the limiting range of the locking block 25. At this time, the sliding shaft 411 can swing around the rotating shaft 321, thereby driving the interface cover 31 to swing. At this time, it is in the unlocked position, and the metal plug can be inserted into the interface hole 21. The sliding guide groove 45 and the limiting opening groove 24 together form the movement track of the locking block 41. The one-way blocking action of the locking block 25 realizes self-locking, preventing the interface cover 31 from being accidentally opened when accidentally touched, thus enhancing the passive safety of the interface. This structure does not require an additional power source, has fewer parts, high reliability, and controllable cost.

[0020] like Figure 2 , Figure 4 and Figure 8A spring receiving groove 46 is provided in the middle of the locking block 41, and a return spring 461 is provided in the spring receiving groove 46. A spring fixing plate 33 is provided on the side of the rotating shaft receiving post 32 near the spring receiving groove 46. A first spring fixing hole 34 is provided in the middle of the spring fixing plate 33, and a second spring fixing hole 47 is provided at the lower end of the spring receiving groove 46. One end of the return spring 461 is connected to the first spring fixing hole 34, and the other end of the return spring 461 is connected to the second spring fixing hole 47. The spring receiving groove 46 is a groove that is recessed inward from the side of the locking block 41 facing the rotating shaft receiving post 32. Its internal space is used to accommodate the return spring 461 and guide its extension and contraction direction. The spring fixing plate 33 extends from the outer wall of the rotating shaft receiving post 32 and is located in front of the opening end of the spring receiving groove 46. The first spring fixing hole 34 is located in the center of the fixing plate and serves as the connection point of one end of the return spring 461. The second spring fixing hole 47 is opened at the bottom of the spring receiving groove 46 and serves as the connection point of the other end of the spring. The two ends of the return spring 461 are respectively inserted into or hooked into the two fixing holes to form a fixed connection. After assembly, the return spring 461 is in a tensile state, applying a constant tensile force to the locking block 41, so that the locking block 41 always tends to return to the locked position. The inner wall of the spring receiving groove 46 constrains the radial deformation of the spring, preventing the spring from bending or deflecting during deformation. When the locking block 41 moves from the locked position to the unlocked position due to magnetic attraction, the return spring 461 is stretched, and its elastic potential energy increases; when the magnetic attraction disappears, the return spring 461 pulls the locking block 41 back to the locked position. The return spring 461 is always in a tensile state, ensuring that the locking block 41 is in the locked state when no external metal plug is inserted; the guiding function of the spring receiving groove 46 effectively prevents the spring from lateral instability and extends the effective service life of the spring; the cooperation between the spring fixing plate 33 and the fixing hole improves the reliability of the connection at both ends of the spring, thereby improving the reliability and safety of the structure in long-term repeated use.

[0021] like Figure 2 , Figure 3 and Figure 4A limiting groove 48 is provided at the middle end of the locking block 41 near the interface cover plate 31. A limiting protrusion 35 is provided at the corresponding position on the interface cover plate 31 and the limiting groove 48. The limiting protrusion 35 extends from the upper surface of the interface cover plate 31 to one side of the rotating shaft receiving post 32 and is disposed within the limiting groove 48. The limiting groove 48 is a recess formed on the side of the locking block 41 facing the interface cover plate 31. The limiting protrusion 35 is a protrusion integrally extending from the upper surface of the interface cover plate 31 and the side of the rotating shaft receiving post 32. This protrusion extends into the limiting groove 48, and the width of the limiting groove 48 is greater than the thickness of the limiting protrusion 35, allowing the limiting protrusion 35 to slide relative to each other within the limiting groove 48. When the locking block 41 moves along its own direction of motion, the limiting protrusion 35 slides along the groove 48 within the limiting groove. This engagement restricts the offset and rotation of the locking block 41 in its direction of motion, ensuring that the sliding shafts 411 at both ends of the locking block 41 are always in the same relative position. Through this structure, the movement of the locking block 41 is constrained to a straight trajectory. The limiting protrusion 35 acts as a reinforcing rib, improving the rigidity and strength of the interface cover plate 31.

[0022] like Figure 1 and Figure 2 As shown, a torsion spring 36 is fitted onto the rotating shaft 321. One end of the torsion spring 36 is connected to the mounting base cover plate 2, and the other end is connected to the interface cover plate 31. The torsion spring 36 is fitted onto the rotating shaft 321, with its helical portion surrounding the outer circumference of the rotating shaft 321, maintaining a gap between itself and the rotating shaft 321 to reduce frictional resistance. The torsion spring 36 has two torsion arms. The first torsion arm is connected to a fixed structure on the mounting base cover plate 2 and remains stationary; the second torsion arm is connected to the interface cover plate 31. When the interface cover plate 31 is in the closed position, the torsion spring 36 is in a tightened state, at which time the interface cover plate 31 seals the interface hole 21. When the interface cover plate 31 rotates around the rotating shaft 321 and opens into the mounting cavity 11, the interface cover plate 31 drives the second torsion arm to swing around the rotating shaft 321, further tightening the torsion spring 36. At this time, the torsion spring 36 applies a restoring torque to the interface cover plate 31 in the opposite direction to the opening direction. When the metal plug is pulled out, the elastic potential energy of the torsion spring 36 is released, driving the second torsion arm to swing the interface cover 31 until the interface cover 31 covers the interface hole 21 again. The torque of the torsion spring 36 is matched according to the weight of the interface cover 31 and the required closing speed. Through the action of the torsion spring 36, the opening of the interface cover 31 is driven by external force, while the closing is automatically completed by the spring force. The torsion spring 36 serves as the power source for closing the interface cover 31, eliminating the need for the user to manually close the interface cover 31; thus improving the ease of use of the interface.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 9As shown, a connecting mounting base 25 is provided on the side of the mounting plate 22 opposite to the guide plate 44. A groove 12 is provided at the corresponding position of the interface mounting base 1 and the connecting mounting base 25. A connecting hole 13 is provided at the bottom of the groove 12. The connecting structure 5 includes a buckle 51, with elastic cantilever arms 52 on both sides of the buckle 51. The buckle 51 is located in the middle of the connecting mounting base 25, and the top of the connecting mounting base 25 extends into the groove 12. The outer sides of the elastic cantilever arms 52 engage with the connecting hole 13. The connecting mounting base 25 is located on the outer side of the mounting plate 22, i.e., the side opposite to the guide plate 44, and is I-shaped. The inner wall of the interface mounting base 1 is recessed inward at the position corresponding to the connecting mounting base 25 to form a groove 12, and a connecting hole 13 is provided at the bottom of the groove 12. The buckle 51 of the connecting structure 5 is an integral elastic component, installed in the center of the connecting mounting base 25. The two ends of the connecting mounting base 25 act as limiters to prevent the buckle 51 from deviating. Symmetrically extending from both sides are cantilever arms 52 with elastic deformation capabilities, i.e., elastic cantilever arms 52. During assembly, the buckle 51 is first installed on the connecting mounting base 25, and then the connecting mounting base 25 together with the buckle 51 is inserted into the connecting hole 13 of the countersunk groove 12. When the elastic cantilever arm 52 enters the connecting hole 13, it is squeezed inward by the hole wall and elastically contracts. After passing through the connecting hole 13, the elastic cantilever arm 52 returns to its original shape, and its outer claws engage with the edge of the connecting hole 13. The buckle 51 and elastic cantilever arm 52 are made of spring steel with good elasticity and fatigue resistance to ensure sufficient clamping force after multiple disassemblies and reassemblies. The countersunk groove 12 reduces the height of the connecting mounting base 25 and increases its strength. When disassembly is required, press the elastic cantilever 52 from the outside to retract it, releasing the snap-fit ​​and separating the components. The quick-release connection structure formed by the snap-fit ​​51 and the elastic cantilever 52 eliminates the need for bolts or screws when installing and removing the mounting cover 2 and the interface mounting base 1, simplifying the disassembly and assembly process. The overall use of elastic snap-fit ​​rather than rigid fixation also has the effect of absorbing minor vibrations during vehicle operation, reducing impact stress at the connection point and improving long-term reliability.

[0024] like Figure 1 and Figure 5As shown, the interface mounting base 1 has a clearance groove 14 at the end away from the mounting base cover plate 2. The clearance groove 14 communicates with the mounting cavity 11. Assembly holes 15 are provided on both sides of the clearance groove 14 for assembling the interface mounting base 1 with the vehicle body. A bolt fixing post 16 is provided on one side of the assembly hole 15 for connecting and fixing the interface mounting base 1 to the vehicle body. The clearance groove 14 is located at the rear end of the interface mounting base 1, and it is spatially connected to the mounting cavity 11, facilitating the insertion of the wiring harness into the clearance groove 14 during assembly. The assembly holes 15 are located on both sides of the clearance groove 14 and are through holes. Their positions correspond to the preset mounting points on the car seat frame, allowing bolts or screws to pass through and fix the interface mounting base 1 to the vehicle body. The bolt fixing post 16 is a protruding post located on one side of the assembly hole 15, with internal threads to further enhance the connection strength. The clearance groove 14 provides clearance space for the wiring harness, improving assembly operability; the combination of the mounting hole 15 and the bolt fixing post 16 allows the interface mounting seat 1 to be connected to the vehicle body by either bolt through-fixing or direct fastening with screws, adapting to the assembly needs of different vehicle models.

[0025] like Figure 1 , Figure 2 and Figure 7 As shown, an annular bright strip plate 6 is provided at the end of the mounting cover plate 2 away from the mounting cavity 11. A plastic welding piece 61 is provided at the end of the annular bright strip plate 6 near the mounting cover plate 2. A welding hole 26 is provided at the corresponding position of the plastic welding piece 61 on the mounting cover plate 2. The plastic welding piece 61 passes through the welding hole 26 and extends to the end of the welding hole 26 away from the annular bright strip plate 6. The annular bright strip plate 6 is a decorative component installed on the outer surface of the mounting cover plate 2. Its shape is annular, serving to beautify the appearance and conceal the internal structure. Multiple plastic welding pieces 61 are integrally formed on the back of the annular bright strip plate 6. These welding pieces are thin and their positions correspond one-to-one with the welding holes 26 on the mounting cover plate 2. During assembly, the plastic welding piece 61 is inserted into the corresponding welding hole 26, with its end extending to the other side of the welding hole 26. Then, through hot-melt welding, the extended end of the welding piece is melted and flattened to form a riveted weld point, thereby fixing the annular bright strip 6 to the mounting base cover plate 2. The annular bright strip 6 is connected to the mounting base cover plate 2 through the welding structure between the plastic welding piece 61 and the welding hole 26. The welding connection is a material fusion type connection, without additional fasteners, maintaining a clean and aesthetically pleasing appearance.

[0026] A method for operating a magnetic interface structure for an automotive seat: Initially, the interface structure is in a closed and locked state. At this time, the interface cover 31 covers the interface hole 21 of the mounting cover 2. The locking block 41 is pulled into the locked position under the elastic preload of the return spring 461. In this locked position, the sliding shafts 411 at both ends of the locking block 41 are located in the upper region of the corresponding limiting opening groove 24, and the sliding shafts 411 are engaged between the engaging surface of the locking block 25 and the upper inner wall of the limiting opening groove 24, forming a mechanical limit, thereby restricting the swing of the interface cover 31 around the rotating shaft 321, preventing the cover from being accidentally opened. When an external metal plug approaches the interface cover 31, the magnet 42 is subjected to the magnetic attraction of the plug's metal component. The magnetic attraction overcomes the preload of the return spring 461, and the magnet 42 moves towards the plug side along the groove direction of the sliding guide groove 45. Magnet 42 is fixedly connected to locking block 41, so locking block 41 moves synchronously with magnet, sliding from the locked position to the unlocked position. During this process, sliding shaft 411 slides down along the groove wall of limiting opening slot 24, gradually disengaging from the locking range of locking block 25. When sliding shaft 411 is completely disengaged from locking block 25, the rotational constraint of locking block 41 on interface cover 31 is released. At this time, metal plug is inserted along the axial direction of interface hole 21, and its front end pushes against the inner surface of interface cover 31. Under the action of pushing force, interface cover 31 rotates around pivot 321 towards the inside of interface hole 21, thus exposing interface hole 21 and allowing plug to be further inserted to the working position for mating with internal connector. When it is necessary to remove the external plug, the user pulls the plug outward, and the plug gradually exits interface hole 21. During the exit process, the plug tip contacts the interface cover 31. Driven by the reset torque of the torsion spring 36, the interface cover 31 rotates in the opposite direction around the pivot 321, swinging back towards the interface hole 21 until it covers the interface hole 21 again, restoring the closed state. As the plug continues to move outward and eventually disengages from the magnetic attraction area of ​​the magnet 42, the magnetic attraction disappears. At this time, the reset spring 461 releases its elastic potential energy, driving the locking block 41 to reset along the sliding guide groove 45 from the unlocked position to the locked position. Driven by the locking block, the sliding shaft 411 slides synchronously upward along the groove trajectory of the limiting opening groove 24 until it re-enters the upper area of ​​the limiting opening groove 24 and is once again engaged between the locking block 25 and the upper inner wall of the limiting opening groove 24. At this time, the locking block 41 returns to the initial locked position, the interface cover 31 is relocked, and the entire interface structure returns to the closed locked state, preparing for the next module installation.

[0027] This invention relates to a magnetic interface structure for an automotive seat, comprising an interface mounting base 1, an internal space forming a mounting cavity 11, an interface cover 2 at the opening of the mounting cavity 11, a rotating cover structure 3 on the side of the interface cover 2 near the mounting cavity 11, a magnetic opening and closing structure 4 at the end of the rotating cover structure 3 near the mounting cavity 11, and connecting structures 5 on both sides of the rotating cover structure 3. In use, the interface cover 31 initially covers the interface hole 21 of the interface cover 2. The locking block 41 is pulled into a locked position under the elastic preload of the return spring 461. In this locked position, the sliding shafts 411 at both ends of the locking block 41 are located in the upper region of the corresponding limiting opening groove 24, and the sliding shafts 411 are engaged between the engaging surface of the locking block 25 and the upper inner wall of the limiting opening groove 24, forming a mechanical limit, thereby constraining the swing of the interface cover 31 around the rotating shaft 321, preventing the cover from being accidentally opened. When the external metal plug approaches the interface cover 31, the magnet 42 is attracted by the magnetic force of the plug's metal components. This magnetic force overcomes the preload of the return spring 461, causing the magnet 42 to move towards the plug along the groove direction of the sliding guide groove 45. The magnet 42 is fixedly connected to the locking block 41, so the locking block 41 moves synchronously with the magnet, sliding from the locked position to the unlocked position. During this process, the sliding shaft 411 slides downwards along the groove wall of the limiting opening groove 24, gradually disengaging from the locking range of the locking block 25. When the sliding shaft 411 is completely disengaged from the locking block 25, the rotational constraint of the locking block 41 on the interface cover 31 is released. At this point, the metal plug is inserted along the axis of the interface hole 21, its front end pushing against the inner surface of the interface cover 31. Under the action of the pushing force, the interface cover 31 rotates around the pivot 321 towards the interior of the interface hole 21, thus exposing the interface hole 21 and allowing the plug to be further inserted to the working position where it mates with the internal connector. When the external plug needs to be unplugged, the user pulls the plug outward, and the plug gradually exits the interface hole 21. During the exit process, the front end of the plug contacts the interface cover plate 31. Driven by the reset torque of the torsion spring 36, the interface cover plate 31 rotates in the opposite direction around the rotating shaft 321, swinging back towards the interface hole 21 until it covers the interface hole 21 again, restoring the closed state. As the plug continues to move outward and eventually leaves the magnetic attraction area of ​​the magnet 42, the magnetic attraction disappears. At this time, the reset spring 461 releases its elastic potential energy, driving the locking block 41 to reset along the sliding guide groove 45 from the unlocked position to the locked position. Driven by the locking block, the sliding shaft 411 slides synchronously upward along the groove trajectory of the limiting opening groove 24 until it re-enters the upper area of ​​the limiting opening groove 24 and is once again engaged between the locking block 25 and the upper inner wall of the limiting opening groove 24. At this point, the locking block 41 returns to its initial locking position, the interface cover 31 is relocked, and the entire interface structure returns to the closed locking state, preparing for the next module installation.

[0028] This structure, through the linkage design of the magnetic opening and closing structure 4 and the rotating cover structure 3, realizes the operation logic of opening upon insertion and locking upon removal. The magnet 42 acts as a sensing element, triggering the locking block 41 to move from the locked position to the unlocked position when the external module approaches, releasing the locking block 25 from the locking constraint on the sliding shaft 411. The interface cover 31 then automatically rotates around the rotating shaft 321 to open under the push of the metal plug. When removed, the return spring 461 and the torsion spring 36 reset, returning the locking block 41 and the interface cover 31 to the initial locked state. The entire process does not require the user to perform additional unlocking or locking operations; only the insertion and removal actions are needed to complete the plug connection, improving the user experience. In the standby state, the sliding shaft 411 is locked between the locking block 25 and the upper inner wall of the limiting opening slot 24, and the interface cover 31 is mechanically locked and cannot swing around the rotating shaft 321. The one-way blocking structure of the locking block 25 ensures that the sliding shaft 411 can only be released in a specific direction. The sliding shaft 411 passes through both the sliding guide groove 45 on the guide plate 44 and the limiting opening groove 24 on the mounting plate 22. The two sets of grooves work together to constrain the movement trajectory of the locking block 41, ensuring that it moves in the predetermined direction. At the same time, the cooperation between the limiting groove 48 and the limiting protrusion 35 further restricts the offset and rotation of the locking block 41 in the direction perpendicular to the movement direction, reducing the possibility of the locking block 41 deflecting or getting stuck, thereby improving the consistency of the structure's operation during long-term use. The return spring 461 is located within the spring receiving groove 46. Its extension and retraction direction is guided by the inner wall of the groove, reducing lateral bending or instability during compression and rebound. The radial constraint of the spring receiving groove 46 on the spring, combined with the firm positioning of the spring ends by the first spring fixing hole 34 and the second spring fixing hole 47, ensures that the return spring 461 always works along the extension direction of the spring receiving groove 46, reducing friction and wear between the spring and surrounding components. Simultaneously, the torsion spring 36 is mounted on the rotating shaft 321. The return spring 461 and the torsion spring 36 respectively control the translational reset of the locking block 41 and the rotational reset of the interface cover plate 31. The two springs perform their respective functions without interference. The connection structure 5 adopts a metal snap-fit ​​structure 51. The elastic cantilever 52 automatically retracts and returns to a locked position during the passage through the connection hole 13, making the assembly process quick and efficient, improving production line assembly efficiency. In after-sales maintenance or replacement scenarios, quick disassembly can be achieved by pressing the elastic cantilever 52 without damaging any parts, reducing maintenance costs and operational difficulty. The annular bright strip 6 is hot-melt welded to the welding hole 26 on the mounting base cover plate 2 via a plastic welding piece 61, improving the overall aesthetics. The clearance groove 14 provides clearance space for the wiring harness. The combination of the assembly hole 15 and the bolt fixing post 16 ensures a firm and reliable connection between the interface mounting base 1 and the vehicle body, capable of withstanding multi-directional vibrations and impact loads generated during vehicle operation. This invention has achieved progress in multiple dimensions such as ease of operation, locking reliability, and assembly maintainability, and has high practical value and promising prospects for promotion.

[0029] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A magnetic interface structure for a car seat, characterized in that, Includes an interface mounting base (1), the internal space of which forms a mounting cavity (11), a mounting base cover plate (2) is provided at the opening of the mounting cavity (11), a rotating cover plate structure (3) is provided on the side of the mounting base cover plate (2) near the mounting cavity (11), a magnetic opening and closing structure (4) is provided at the end of the rotating cover plate structure (3) near the mounting cavity (11), and a connecting structure (5) is provided on both sides of the rotating cover plate structure (3).

2. The magnetic interface structure for automotive seats according to claim 1, characterized in that: The mounting base cover plate (2) has an interface hole (21) through the middle. The interface hole (21) has mounting plates (22) on both sides. The mounting plates (22) have mounting holes (23). The rotating cover plate structure (3) includes an interface cover plate (31). The interface cover plate (31) is set in the interface hole (21). The upper end of the interface cover plate (31) has a rotating shaft receiving column (32). The rotating shaft receiving column (32) has a rotating shaft (321) inside. The two ends of the rotating shaft (321) pass through the mounting holes (23).

3. The magnetic interface structure for automotive seats according to claim 2, characterized in that: The magnetic opening and closing structure (4) includes a locking block (41). The locking block (41) has a magnet receiving groove (43) on one side near the interface cover plate (31). A magnet (42) is provided in the magnet receiving groove (43). Guide plates (44) are provided on both sides of the interface cover plate (31). A sliding guide groove (45) is provided through the guide plate (44). A limiting opening groove (24) is provided on the mounting plate (22) at a position corresponding to the sliding guide groove (45). A locking block (25) is provided at the upper end of the limiting opening groove (24). A sliding shaft (411) is provided at both ends of the locking block (41). The end of the sliding shaft (411) passes through the sliding guide groove (45) and extends into the limiting opening groove (24).

4. The magnetic interface structure for automotive seats according to claim 3, characterized in that: The locking block (41) has a spring receiving groove (46) in the middle, and a return spring (461) is provided in the spring receiving groove (46). The rotating shaft receiving column (32) has a spring fixing plate (33) on the side near the spring receiving groove (46). The spring fixing plate (33) has a first spring fixing hole (34) in the middle, and a second spring fixing hole (47) is provided at the lower end of the spring receiving groove (46). One end of the return spring (461) is connected to the first spring fixing hole (34), and the other end of the return spring (461) is connected to the second spring fixing hole (47).

5. The magnetic interface structure for automotive seats according to claim 3, characterized in that: The locking block (41) has a limiting groove (48) at one end near the interface cover plate (31) in the middle. The interface cover plate (31) has a limiting protrusion (35) at the corresponding position of the limiting groove (48). The limiting protrusion (35) extends from the upper surface of the interface cover plate (31) to one side of the rotating shaft receiving column (32). The limiting protrusion (35) is set in the limiting groove (48).

6. The magnetic interface structure for automotive seats according to claim 2, characterized in that: A torsion spring (36) is fitted on the rotating shaft (321). One end of the torsion spring (36) is connected to the mounting base cover plate (2), and the other end of the torsion spring (36) is connected to the interface cover plate (31).

7. The automotive seat magnetic interface structure according to claim 3, characterized in that: The mounting plate (22) is provided with a connecting mounting seat (25) on the side away from the guide plate (44). The interface mounting seat (1) is provided with a groove (12) at the corresponding position of the connecting mounting seat (25). The bottom of the groove (12) is provided with a connecting hole (13). The connecting structure (5) includes a buckle (51). The buckle (51) is provided with elastic cantilever (52) on both sides. The buckle (51) is located in the middle of the connecting mounting seat (25). The top of the connecting mounting seat (25) extends into the groove (12). The outer side of the elastic cantilever (52) is engaged with the connecting hole (13).

8. The magnetic interface structure for automotive seats according to claim 1, characterized in that: The interface mounting base (1) has a clearance groove (14) at one end away from the mounting base cover plate (2). The clearance groove (14) is connected to the mounting cavity (11). The clearance groove (14) has assembly holes (15) on both sides. The assembly holes (15) are used for assembling the interface mounting base (1) with the vehicle body. The assembly hole (15) has a bolt fixing post (16) on one side. The bolt fixing post (16) is used for connecting and fixing the interface mounting base (1) with the vehicle body.

9. The magnetic interface structure for automotive seats according to claim 1, characterized in that: The mounting base cover plate (2) is provided with an annular bright strip plate (6) at one end away from the mounting cavity (11). The annular bright strip plate (6) is provided with a plastic welding piece (61) at one end near the mounting base cover plate (2). The mounting base cover plate (2) is provided with a welding hole (26) at the corresponding position of the plastic welding piece (61). The plastic welding piece (61) passes through the welding hole (26) and extends to the end of the welding hole (26) away from the annular bright strip plate (6).

10. A method for operating a magnetic interface structure for an automobile seat, implemented according to any one of claims 1 to 9, characterized in that: In use, the interface cover (31) is located at the interface hole (21) of the mounting base cover (2), and the locking block (41) is in the locked position under the action of the return spring (461). The sliding shafts (411) at both ends of the locking block (41) are located at the upper end of the limiting opening groove (24), and the sliding shafts (411) are engaged between the locking block (25) and the upper inner wall of the limiting opening groove (24), restricting the interface cover (31) from rotating around the rotating shaft (321). When the metal part of the external plug approaches the interface cover (31), the magnet (42) moves towards the plug under the action of magnetic attraction. The magnet (42) drives the locking block (41) to move from the locked position to the unlocked position along the groove direction of the sliding guide groove (45). The sliding shaft (411) moves synchronously with the locking block (41) and disengages from the engaging range of the locking block (25). The plug moves along the interface... The plug continues to be inserted into the hole (21) and pushes against the interface cover (31). Under the action of the pushing force, the interface cover (31) rotates around the pivot (321) to open. When the plug is pulled out, the torsion spring (36) drives the interface cover (31) to rotate around the pivot (321) towards the interface hole (21) until the interface cover (31) is rotated to the interface hole (21). When the plug is disengaged from the magnetic attraction area of ​​the magnet (42), the reset spring (461) drives the locking block (41) to reset from the unlocked position to the locked position. The sliding shaft (411) moves synchronously in the sliding guide groove (45) and the limiting opening groove (24) until the sliding shaft (411) returns to the upper end of the limiting opening groove (24) and is engaged between the locking block (25) and the upper inner wall of the limiting opening groove (24). The interface cover (31) returns to the locked state.

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