A zero-gravity seat retractor assembly for an automobile

Abstract

The utility model discloses a kind of zero gravity seat retractor assemblies for automobile, including retractor body and angle adjuster component, retractor body includes rack, reel, belt sense locking assembly and with car sense locking assembly, rack is also connected with synchronous adjusting component, synchronous adjusting component includes cover, cover is connected with transmission disc and linkage gear disc in, transmission disc is connected with cover and has adjusting reset piece, transmission disc includes winding groove and gear portion, gear portion and linkage gear disc are mutually engaged, linkage gear disc is connected with car sense locking assembly linkage, winding groove is connected with pull wire in, pull wire is connected with angle adjuster component. The utility model zero gravity seat retractor assemblies for automobile utilizes pull wire, transmission disc and the mechanical components of linkage gear disc to realize the synchronous self-adapting adjustment of car sense locking assembly, avoids complex sensor, electronic control system or additional actuating mechanism, simplifies overall structure, improves the overall reliability and durability of system, reduces production cost.

Description

Technical Field

[0001] This utility model relates to the field of seat belt retractor technology, specifically to a zero-gravity seat retractor assembly for automobiles. Background Technology

[0002] Car seat belts are safety devices designed to restrain occupants during a collision and to prevent them from secondary collisions with the steering wheel and dashboard, or from being ejected from the vehicle during a collision, thus preventing injury or death. The core component of a seat belt is the retractor, which senses the vehicle's acceleration and tilt angle and engages the webbing to lock in the event of an emergency.

[0003] Currently, zero-gravity seats are increasingly widely used in vehicles. The key feature of zero-gravity seats is that both the seat cushion and backrest can be adjusted independently, and the tilt angle can be very large, ranging from -90° to +10°. GB 14166-2024, "Seat Belts and Restraint Systems for Motor Vehicle Occupants," explicitly requires that occupant safety (emergency locking / force limiting) be ensured when the seat is in a reclining position. Existing seat belt retractor assemblies for automotive zero-gravity seats suffer from complex structures and poor synchronization between seat adjustment actions and the adaptive adjustment of the vehicle-sensing locking component, resulting in the vehicle-sensing locking function being unable to adjust immediately or accurately during seat adjustments.

[0004] In view of this, there is an urgent need to design a zero-gravity seat retractor assembly for automobiles to overcome the technical defects existing in the prior art. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a zero-gravity seat retractor assembly for automobiles, comprising a retractor body and an adjuster assembly. The retractor body includes a frame, a drum connected to the frame, a belt-activated locking assembly linked to the drum, and a vehicle-activated locking assembly linked to the belt-activated locking assembly. A synchronization adjustment assembly is also connected to the frame. The synchronization adjustment assembly includes a housing, within which a transmission disc and a linkage gear disc are connected. An adjustment and reset component is connected between the transmission disc and the housing. The transmission disc includes a winding groove and a gear section, which mesh with the linkage gear disc. The linkage gear disc is linked to the vehicle-activated locking assembly. A pull cable is connected to the winding groove and is connected to the adjuster assembly.

[0006] The present invention is further configured such that the linkage gear plate includes a hinge portion and an external tooth portion. The hinge portion has a hinge post on the side near the vehicle sensing locking assembly, and the external tooth portion has an actuating post on the side near the vehicle sensing locking assembly. The vehicle sensing locking assembly includes a vehicle sensing seat, an anti-detachment cover hinged to the vehicle sensing seat, and a steel ball located between the vehicle sensing seat and the anti-detachment cover. The side of the vehicle sensing seat has a hinge portion, and the bottom of the vehicle sensing seat has an actuating groove. The hinge post is connected to the hinge portion, and the actuating post is located in the actuating groove.

[0007] The present invention is further configured such that the vehicle sensing locking assembly also includes a vehicle sensing arm hinged to the frame, the vehicle sensing arm being linked to the anti-detachment cover and the belt sensing locking assembly respectively.

[0008] The present invention is further configured such that a vehicle sensing positioning frame is connected to the frame, the vehicle sensing positioning frame is provided with a mounting cavity, the vehicle sensing seat is located in the mounting cavity, the side of the vehicle sensing seat away from the linkage gear plate is provided with a seat positioning post, the vehicle sensing positioning frame is provided with a seat positioning hole, and the seat positioning post is connected in the seat positioning hole.

[0009] The present invention is further configured such that the cover includes a lower cover and an upper cover, and a receiving cavity is provided between the lower cover and the upper cover. The transmission disk and the adjusting reset member are both located in the receiving cavity. A first shaft connection is provided on one side of the center of the transmission disk, and a second shaft connection is provided on the lower cover opposite to the first shaft connection. One end of the adjusting reset member is connected to the first shaft connection, and the other end of the adjusting reset member is connected to the second shaft connection.

[0010] The present invention is further configured such that the upper cover has a travel groove at the position opposite to the vehicle sensing locking component, a gear plate positioning hole is provided in the travel groove, a gear plate positioning post is provided on the side of the linkage gear plate near the gear plate positioning hole, the gear plate positioning post is connected in the gear plate positioning hole, and the linkage gear plate is located in the travel groove.

[0011] The present invention is further configured such that the transmission disc includes a first pull wire locking groove communicating with the winding groove, the angle adjuster assembly is provided with a second pull wire locking groove, and the pull wire includes a first locking end and a second locking end, the first locking end being connected in the first pull wire locking groove, and the second locking end being connected in the second pull wire locking groove.

[0012] The present invention is further configured such that the angle adjuster assembly includes an angle adjuster base plate, an angle adjuster housing connected to the angle adjuster base plate, and an angle adjuster limiting plate movably connected between the angle adjuster base plate and the angle adjuster housing. The outer periphery of the angle adjuster limiting plate is provided with a winding groove, and the pull wire is connected in the winding groove. The side of the angle adjuster limiting plate away from the angle adjuster housing is provided with a toggle plate, and an external plate is connected to the toggle plate.

[0013] The present invention is further configured such that the adjusting device limiting plate has an installation slot, the installation slot is directly opposite the winding groove, a pull wire positioning seat is connected in the installation slot, the second pull wire locking groove is located on the pull wire positioning seat, the adjusting device limiting plate has a first locking part at the position directly opposite the installation slot, and the pull wire positioning seat has a second locking part at the position directly opposite the first locking part. The pull wire positioning seat is connected to the adjusting device limiting plate through the cooperation of the second locking part and the first locking part.

[0014] The present invention is further configured such that the transmission disc and the linkage gear disc are both integrally formed.

[0015] The working principle of this zero-gravity seat retractor assembly for automobiles is as follows: The retractor body is installed on the back of the car seat, and the angle adjuster assembly is installed on the seat base and connected to the back of the seat. When the angle of the car seat back is adjusted, the angle adjuster assembly rotates to stretch the cable, which in turn drives the transmission plate to rotate in the forward or reverse direction. The gear on the transmission plate drives the linkage gear plate to rotate, thereby driving the vehicle-sensing locking assembly to rotate synchronously, ensuring that the vehicle-sensing locking assembly can adaptively adjust in real time when the car seat angle is adjusted.

[0016] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0017] This technical solution for the zero-gravity seat retractor assembly in automobiles employs a purely mechanical, direct linkage method. This ensures that the sensitive element inside the vehicle-sensing locking component, which senses the vehicle's posture, can adjust its reference position or gravity reference state in real time and accurately follow changes in the seat angle. This allows for immediate and reliable locking of the webbing in emergency situations, providing effective restraint protection. It eliminates the problems of delayed, inaccurate, or even failed locking functions caused by complex structures, response delays, or poor signal transmission in traditional solutions. Furthermore, the synchronous adjustment effectively prevents accidental locking or failure of the vehicle-sensing locking system during or after seat adjustment due to failure to adapt to the new angle in time.

[0018] This technical solution for automotive zero-gravity seat retractor assemblies utilizes mechanical components such as pull cables, transmission discs, and linkage gear discs to achieve synchronous adaptive adjustment of the vehicle-sensing locking components. This avoids complex sensors, electronic control systems, or additional actuators, simplifies the overall structure, improves the overall reliability and durability of the system, and reduces the production cost of the retractor assembly. Attached Figure Description

[0019] Figure 1 This is a three-dimensional view of the take-up unit according to an embodiment of the present utility model.

[0020] Figure 2 This is a perspective view of the retractor of this utility model after the side cover has been removed.

[0021] Figure 3 This is another perspective view of the retractor of this utility model after the side cover has been removed.

[0022] Figure 4 This is a perspective view of the vehicle-sensing locking component and the synchronization adjustment component according to an embodiment of the present utility model.

[0023] Figure 5 This is a partial schematic diagram of the vehicle-sensing locking component and the synchronization adjustment component according to an embodiment of the present utility model.

[0024] Figure 6 This is a perspective view of a portion of the vehicle-sensing locking component in an embodiment of this utility model.

[0025] Figure 7 This is a perspective view of the synchronous adjustment component according to an embodiment of the present invention.

[0026] Figure 8 This is an exploded view of the synchronous adjustment component according to an embodiment of the present invention.

[0027] Figure 9 This is another exploded view of the synchronous adjustment component according to an embodiment of the present invention.

[0028] Figure 10 This is a perspective view of the linkage gear plate in an embodiment of this utility model.

[0029] Figure 11 This is a perspective view of the transmission disc in an embodiment of the present utility model.

[0030] Figure 12 This is a perspective view of the angle adjuster assembly according to an embodiment of the present utility model.

[0031] Figure 13 This is an exploded view of the angle adjuster assembly according to an embodiment of the present invention.

[0032] Figure 14 This is a cross-sectional view of the angle adjuster assembly according to an embodiment of the present invention.

[0033] Figure 15This is a perspective view of the angle adjuster limiting plate and the pull-line positioning seat in an embodiment of this utility model. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] Combined with appendix Figure 1 To be continued Figure 15 This utility model provides a zero-gravity seat retractor assembly for automobiles, comprising a retractor body 1 and an adjuster assembly 2. The retractor body 1 includes a frame 11, a drum 12 connected to the frame 11, a belt-activated locking assembly 3 linked to the drum 12, and a vehicle-activated locking assembly 4 linked to the belt-activated locking assembly 3. A synchronization adjustment assembly 5 is also connected to the frame 11. The synchronization adjustment assembly 5 includes a cover 51, within which a transmission disc 52 and a linkage gear disc 53 are connected. An adjustment and reset component 54 is connected between the transmission disc 52 and the cover 51. The transmission disc 52 includes a winding groove 521 and a gear portion 522, which meshes with the linkage gear disc 53. The linkage gear disc 53 is linked to the vehicle-activated locking assembly 4. A pull cable 6 is connected within the winding groove 521 and is connected to the adjuster assembly 2.

[0036] In this embodiment, the housing 51 is provided with a rotating shaft for the transmission disk 52 to rotate with it as the rotation center. The adjustment and reset component 54 is used to reset the transmission disk 52. When the transmission disk 52 is rotated by the pull cable 6, the transmission disk 52 drives the linkage gear disk 53 to rotate through the meshing structure, thereby driving the vehicle sensing locking component 4 to rotate.

[0037] In this embodiment, the linkage gear 53 includes a hinge portion 531 and an external tooth portion 532. The hinge portion 531 has a hinge post 533 on the side near the vehicle sensor locking assembly 4, and the external tooth portion 532 has an actuating post 534 on the side near the vehicle sensor locking assembly 4. The vehicle sensor locking assembly 4 includes a vehicle sensor seat 41, an anti-detachment cover 42 hinged to the vehicle sensor seat 41, and a steel ball 43 located between the vehicle sensor seat 41 and the anti-detachment cover 42. The side of the vehicle sensor seat 41 has a hinge portion 411, and the bottom of the vehicle sensor seat 41 has an actuating groove 412. The hinge post 533 is connected to the hinge portion 411, and the actuating post 534 is located within the actuating groove 515. This structure allows the linkage gear 53 to quickly and synchronously drive the vehicle sensor locking assembly 4 when it rotates, providing sensitive action feedback.

[0038] In this embodiment, the vehicle-sensing locking assembly 4 further includes a vehicle-sensing arm 44 hinged to the frame 11. The vehicle-sensing arm 44 is linked to the anti-detachment cover 42 and the belt-sensing locking assembly 3. The belt-sensing locking assembly 3 includes a ratchet. When the steel ball 43 shakes due to acceleration or vehicle tilt, it drives the anti-detachment cover 42 to move towards the vehicle-sensing arm 44, thereby locking the ratchet portion of the vehicle-sensing arm 44 with the ratchet of the belt-sensing locking assembly 3, preventing the drum 12 from rotating and preventing the seat belt from being released outward.

[0039] In this embodiment, a vehicle sensing positioning frame 45 is connected to the frame 11. The vehicle sensing positioning frame 45 has a mounting cavity 451, and the vehicle sensing seat 41 is located in the mounting cavity 451. A seat positioning post 413 is provided on the side of the vehicle sensing seat 41 away from the linkage gear 53. A seat positioning hole 452 is opened on the vehicle sensing positioning frame 45, and the seat positioning post 413 is connected in the seat positioning hole 452. The vehicle sensing positioning frame 45 is used for positioning the vehicle sensing seat 41 and is also located on one side of the linkage gear 53 to prevent the linkage gear 53 from dislodging.

[0040] In this embodiment, the cover 51 includes a lower cover 511 and an upper cover 512. A receiving cavity 513 is provided between the lower cover 511 and the upper cover 512. The transmission disk 52 and the adjustment and reset member 54 are both located in the receiving cavity 513. A first shaft connection portion 523 is provided on one side of the center of the transmission disk 52. A second shaft connection portion 514 is provided on the lower cover 512 opposite to the first shaft connection portion 523. One end of the adjustment and reset member 54 is connected to the first shaft connection portion 523, and the other end of the adjustment and reset member 54 is connected to the second shaft connection portion 514.

[0041] In this embodiment, the adjusting reset member 54 is a torsion spring.

[0042] In this embodiment, the upper cover 512 has a travel groove 515 opposite to the vehicle-sensing locking assembly 4. A gear positioning hole 516 is provided in the travel groove 515. A gear positioning post 535 is provided on the side of the linkage gear 53 near the gear positioning hole 516. The gear positioning post 535 is connected in the gear positioning hole 516. The linkage gear 53 is located in the travel groove 515. The travel groove 515 is used to limit the rotation angle of the linkage gear 53.

[0043] In this embodiment, the transmission disc 52 includes a first pull wire locking groove 524 that communicates with the winding groove 521, the angle adjuster assembly 2 is provided with a second pull wire locking groove 261, and the pull wire 6 includes a first locking end 61 and a second locking end 62. The first locking end 61 is connected in the first pull wire locking groove 524, and the second locking end 62 is connected in the second pull wire locking groove 261.

[0044] In this embodiment, the angle adjuster assembly 2 includes an angle adjuster base plate 21, an angle adjuster housing 22 connected to the angle adjuster base plate 21, and an angle adjuster limiting plate 23 movably connected between the angle adjuster base plate 21 and the angle adjuster housing 22. The angle adjuster limiting plate 23 has a winding groove 231 on its outer periphery, and the pull cable 6 is connected in the winding groove 231. The side of the angle adjuster limiting plate 23 away from the angle adjuster housing 22 has a toggle plate 24, and an external plate 25 is connected to the toggle plate 24. The external plate 25 and the angle adjuster base plate 21 are used for connecting the angle adjuster assembly 2 to the seat.

[0045] In this embodiment, the angle adjuster limiting plate 23 has an installation slot 232, which is directly opposite to the cable winding slot 231. A cable positioning seat 26 is connected inside the installation slot 232. The second cable locking slot 261 is located on the cable positioning seat 26. The angle adjuster limiting plate 23 has a first latching part 233 at the position directly opposite to the installation slot 232. The cable positioning seat 26 has a second latching part 262 at the position directly opposite to the first latching part 233. The cable positioning seat 26 is connected to the angle adjuster limiting plate 23 through the cooperation of the second latching part 262 and the first latching part 233.

[0046] In this embodiment, both the transmission disk 52 and the linkage gear disk 53 are integrally formed.

[0047] The working principle of the zero-gravity seat retractor assembly for automobiles in this embodiment is as follows: the retractor body 1 is installed on the back of the car seat, the angle adjuster assembly 2 is installed on the seat base and connected to the back of the seat. When the angle of the car seat back is adjusted, the angle adjuster assembly 2 rotates to stretch the cable 6, which drives the transmission disc 52 to rotate in the forward or reverse direction. The gear part 522 on the transmission disc 52 drives the linkage gear disc 53 to rotate, thereby driving the vehicle sensing locking assembly 4 to rotate synchronously, ensuring that the vehicle sensing locking assembly can make adaptive adjustments in real time when the angle of the car seat is adjusted.

[0048] In this embodiment, the zero-gravity seat retractor assembly for automobiles employs a purely mechanical, direct linkage method to ensure that the sensitive element inside the vehicle-sensing locking component, which senses the vehicle's posture, can adjust its reference position or gravity reference state in real time and accurately following changes in the seat angle. This allows for immediate and reliable locking of the webbing in emergency situations, providing effective restraint protection and eliminating the problems of delayed, inaccurate, or even failed locking functions caused by complex structures, response delays, or poor signal transmission in traditional solutions. Furthermore, the synchronous adjustment effectively prevents accidental locking or failure of the vehicle-sensing locking system due to its failure to adapt to the new angle during or after seat adjustment.

[0049] This technical solution for the zero-gravity seat retractor assembly for automobiles utilizes mechanical components such as the pull cable 6, transmission disc 52, and linkage gear disc 53 to achieve synchronous adaptive adjustment of the vehicle-sensing locking component 4. This avoids complex sensors, electronic control systems, or additional actuators, simplifies the overall structure, improves the overall reliability and durability of the system, and reduces the production cost of the retractor assembly.

[0050] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0051] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A zero-gravity seat retractor assembly for automobiles, comprising a retractor body and an adjuster assembly, wherein the retractor body includes a frame, a drum connected to the frame, a belt-sensing locking assembly linked to the drum, and a vehicle-sensing locking assembly linked to the belt-sensing locking assembly, characterized in that, The frame is also connected to a synchronous adjustment assembly, which includes a cover. A transmission disc and a linkage gear disc are connected inside the cover. An adjustment and reset component is connected between the transmission disc and the cover. The transmission disc includes a winding groove and a gear section. The gear section and the linkage gear disc mesh with each other. The linkage gear disc is linked to the vehicle sensing locking assembly. A pull wire is connected inside the winding groove and is connected to the angle adjuster assembly.

2. The zero-gravity seat retractor assembly for automobiles according to claim 1, characterized in that, The linkage gear includes a hinge portion and an external gear portion. The hinge portion has a hinge post on the side near the vehicle sensing locking assembly, and the external gear portion has an actuating post on the side near the vehicle sensing locking assembly. The vehicle sensing locking assembly includes a vehicle sensing seat, an anti-detachment cover hinged to the vehicle sensing seat, and a steel ball located between the vehicle sensing seat and the anti-detachment cover. The side of the vehicle sensing seat has a hinge portion, and the bottom of the vehicle sensing seat has an actuating groove. The hinge post is connected to the hinge portion, and the actuating post is located in the actuating groove.

3. The zero-gravity seat retractor assembly for automobiles according to claim 2, characterized in that, The vehicle-sensing locking assembly also includes a vehicle-sensing arm hinged to the frame, and the vehicle-sensing arm is linked to the anti-detachment cover and the belt-sensing locking assembly.

4. The zero-gravity seat retractor assembly for automobiles according to claim 2, characterized in that, A vehicle sensing positioning frame is connected to the frame. The vehicle sensing positioning frame has a mounting cavity. The vehicle sensing seat is located in the mounting cavity. A seat positioning post is provided on the side of the vehicle sensing seat away from the linkage gear plate. A seat positioning hole is opened on the vehicle sensing positioning frame. The seat positioning post is connected to the seat positioning hole.

5. The zero-gravity seat retractor assembly for automobiles according to claim 1, characterized in that, The housing includes a lower housing and an upper housing, with a receiving cavity between the lower housing and the upper housing. The transmission disk and the adjustment and reset component are both located in the receiving cavity. A first shaft connection is provided on one side of the center of the transmission disk, and a second shaft connection is provided on the lower housing directly opposite the first shaft connection. One end of the adjustment and reset component is connected to the first shaft connection, and the other end of the adjustment and reset component is connected to the second shaft connection.

6. The zero-gravity seat retractor assembly for automobiles according to claim 5, characterized in that, The upper cover has a travel groove facing the vehicle-sensing locking component. A gear plate positioning hole is provided in the travel groove. A gear plate positioning post is provided on the side of the linkage gear plate near the gear plate positioning hole. The gear plate positioning post is connected in the gear plate positioning hole. The linkage gear plate is located in the travel groove.

7. The zero-gravity seat retractor assembly for automobiles according to claim 5, characterized in that, The transmission disc includes a first pull wire locking groove that communicates with the winding groove, and the angle adjuster assembly is provided with a second pull wire locking groove. The pull wire includes a first locking end and a second locking end, the first locking end being connected in the first pull wire locking groove, and the second locking end being connected in the second pull wire locking groove.

8. A zero-gravity seat retractor assembly for automobiles according to claim 7, characterized in that, The angle adjuster assembly includes an angle adjuster base plate, an angle adjuster housing connected to the angle adjuster base plate, and an angle adjuster limiting plate movably connected between the angle adjuster base plate and the angle adjuster housing. The outer periphery of the angle adjuster limiting plate is provided with a winding groove, and the pull cable is connected in the winding groove. The side of the angle adjuster limiting plate away from the angle adjuster housing is provided with a toggle plate, and an external plate is connected to the toggle plate.

9. A zero-gravity seat retractor assembly for automobiles according to claim 8, characterized in that, The angle adjuster limiting plate has an installation slot, which is directly opposite the cable winding slot. A cable positioning seat is connected inside the installation slot. The second cable locking slot is located on the cable positioning seat. The angle adjuster limiting plate has a first locking part at the position opposite the installation slot. The cable positioning seat has a second locking part at the position opposite the first locking part. The cable positioning seat is connected to the angle adjuster limiting plate through the cooperation of the second locking part and the first locking part.

10. A zero-gravity seat retractor assembly for automobiles according to any one of claims 1 to 9, characterized in that, Both the transmission disc and the linkage gear disc are integrally formed.

Images