Safety belt adjustment structure, vehicle seat, and vehicle

Abstract

The application relates to a safety belt adjusting structure, an automobile seat and a vehicle, and relates to the technical field of automobile seats. The adjusting structure comprises a driving mechanism, a moving mechanism and a guide piece, which are arranged in a seat back skeleton; the driving mechanism is in transmission connection with the moving mechanism; and the guide piece is installed on the moving mechanism and is provided for a safety belt. The driving mechanism can drive the guide piece to move in the direction of approaching or moving away from the neck area of a passenger, so as to guide the safety belt to correspondingly deviate. The structure can dynamically adjust the safety belt path according to the seat posture, so that the safety belt can be attached to the shoulder of an occupant in zero gravity or a conventional sitting posture, is beneficial to reducing the compression risk of the safety belt on the neck, improves the restraint effect, and improves the riding safety and comfort.

Description

Technical Field

[0001] This application relates to the field of automotive seat technology, and more particularly to a seat belt adjustment structure, an automotive seat, and a vehicle. Background Technology

[0002] Currently, with the increasing demand for ride comfort and personalization in high-end vehicles, zero-gravity seats are widely used in automobiles because they simulate the natural posture of the human body in a weightless state. However, traditional seat belts are fixed in structure and cannot adapt to changes in seat posture. Especially when the seat is in a zero-gravity position, the seat belt may be close to the passenger's neck, posing a risk of strangulation in the event of a collision. When the seat is in a normal position, the seat belt may be far away from the passenger's shoulders, resulting in insufficient restraint and ineffective protection. Utility Model Content

[0003] This application provides a seatbelt adjustment structure, a car seat, and a vehicle, which can improve passenger safety and at least partially solve the above-mentioned technical problems.

[0004] To achieve the above objectives, according to a first aspect of this application, a seat belt adjustment structure is provided, including a drive mechanism, a moving mechanism, and a guide member. The drive mechanism and the moving mechanism are both configured to be disposed in the backrest frame of a car seat. The drive mechanism is drively connected to the moving mechanism. The guide member is disposed on the moving mechanism and configured to allow the seat belt of the car seat to pass through. The drive mechanism is configured to drive the moving mechanism and the guide member to move toward or away from the passenger's neck area.

[0005] Optionally, the system also includes a housing configured to be disposed in the backrest frame of the vehicle seat, wherein the drive mechanism, the moving mechanism and the guide are all mounted on the housing.

[0006] Optionally, the drive mechanism includes a power component, which is connected to the moving mechanism in a transmission manner.

[0007] Optionally, the power assembly includes a motor, a turbine, and a worm gear. The motor is mounted on the housing, the worm gear is coaxially mounted on the output shaft of the motor, the turbine is rotatably mounted inside the housing, and the turbine meshes with the worm gear. At the same time, the turbine is connected to the moving mechanism via a transmission.

[0008] Optionally, the drive mechanism further includes a reduction gear assembly, which is drively connected between the turbine and the moving mechanism.

[0009] Optionally, the reduction assembly includes a first gear and a second gear, the first gear, the second gear and the turbine are all drivenly connected, and the second gear is configured to be drivenly connected to the moving mechanism to drive the moving mechanism to move along a first direction.

[0010] Optionally, a first transmission gear is coaxially connected to the turbine, the first transmission gear meshes with the first gear, and a second transmission gear is coaxially connected to the first gear, the second transmission gear meshes with the second gear.

[0011] Optionally, the number of teeth of the first transmission gear is less than the number of teeth of the first gear, and the number of teeth of the first gear is less than the number of teeth of the second gear.

[0012] Optionally, the moving mechanism includes a rack and a guide rod. The guide rod is disposed on the housing and its length direction is parallel to the first direction. The rack is slidably disposed on the guide rod and meshes with the second gear.

[0013] Optionally, the guide has a notch and a connecting hole, one end of the notch is connected to the connecting hole and the other end is connected to the outside, and the width of the notch is smaller than the width of the seat belt.

[0014] According to a second aspect of this application, an automobile seat is provided, including the seat belt adjustment structure described in the first aspect.

[0015] Optionally, it also includes a backrest frame, wherein the seat belt adjustment structure is configured to be located within the backrest frame and close to the passenger's shoulder area, and the guide extends from within the backrest frame to the outside.

[0016] According to a third aspect of this application, an exclusive right to the largest protected subject matter is also provided, including an exclusive right to the second smallest protected subject matter as described above.

[0017] In the seat belt adjustment structure of this application embodiment, by integrating a drive mechanism, a moving mechanism, and a guide member into the backrest frame of the car seat, the guide path of the seat belt has dynamic adjustment capability. When the passenger is in a zero-gravity or reclining posture, this structure can guide the seat belt closer to the shoulder and away from the neck area, reducing the risk of the seat belt pressing on the neck during an impact; when the passenger is in a normal sitting posture, it can guide the seat belt closer to the shoulder, improving restraint and protection. Through the cooperation of the guide member and the seat belt, the displacement of the guide member can substantially guide the seat belt path, thereby effectively adapting to the changes in the passenger's body posture in different positions, enhancing the ergonomics and restraint effect of the seat belt, and having high practicality and safety. This structure has the advantages of fast response, precise control, and compact layout, which is beneficial to improving the active and passive safety performance of the vehicle, and is particularly suitable for the integrated application of high-end intelligent seat systems.

[0018] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0021] Figure 1 This is a schematic diagram of the overall structure of the car seat provided in the embodiments of this application;

[0022] Figure 2 This is a schematic diagram of the structure of a car seat after partially concealing the shell, as provided in the embodiments of this application;

[0023] Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle;

[0024] Figure 4 This is a schematic diagram of the seat belt adjustment structure provided in this application embodiment after a portion of the housing has been hidden.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Drive mechanism; 11. Power assembly; 111. Motor; 112. Turbine; 113. Worm gear; 12. Second transmission gear; 13. Reduction assembly; 131. First gear; 132. Second gear; 14. First transmission gear;

[0027] 2. Moving mechanism; 21. Rack; 22. Guide rod;

[0028] 3. Guide component; 31. Notch; 32. Connecting hole;

[0029] 4. Shell;

[0030] 5. Backrest frame. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0032] Firstly, this application provides a seatbelt adjustment structure, which includes a drive mechanism 1, a moving mechanism 2, and a guide member 3. These three components together form a system capable of dynamically adjusting the seatbelt guide path to adapt to the passenger's usage needs in different seating positions. The drive mechanism 1 and the moving mechanism 2 are housed within the backrest frame 5 of the car seat, representing an integrated design of the seat structure. This design is beneficial for saving space, improving structural compactness, and making the overall adjustment behavior more stable and reliable.

[0033] Furthermore, the moving mechanism 2 is connected to the driving mechanism 1 via mechanical transmission, such as gear meshing, worm gear 113, or slide rail lead screw, so that when the driving mechanism 1 moves, it can drive the moving mechanism 2 to produce linear displacement. A guide member 3 is installed on the moving mechanism 2, and its structure is designed to allow the seat belt to pass through it. For example, the guide member 3 has through holes or guide grooves. When the seat belt passes through the guide member 3, its path will be restricted and guided by the guide member 3. Changes in the position of the guide member 3 will directly cause a corresponding shift in the position of the seat belt, resulting in a controllable adjustment effect.

[0034] For example, in terms of functional implementation, the drive mechanism 1 is configured to move the moving mechanism 2 and the guide 3 in a direction closer to or further away from the passenger's neck area. It can be understood that "a direction closer to or further away from the passenger's neck area" here should be understood as an adjustable path along the vertical or diagonal direction of the seat back. The specific design of this direction should be consistent with the force distribution in the seat's zero-gravity mode or normal seating posture, so that the adjustment behavior can cover the needs of different scenarios. When the seat is in a zero-gravity posture, because the passenger's body is in a reclining position, the shoulder position is relatively lower, and part of the seat belt is likely to be close to the neck, posing a risk of strangulation. Moving the guide 3 in a direction away from the neck helps to bring the seat belt closer to the shoulder area, thereby reducing the risk of neck compression to a certain extent. In a normal seating posture, if there is a large gap between the seat belt and the shoulder, the restraint effect is weakened. The guide 3 can move in a direction closer to the shoulder, making the seat belt fit the passenger's body surface more closely, improving restraint performance and occupant protection.

[0035] It is understood that the structure of the guide component 3 can be configured as a closed annular hole, an open guide groove, or a flexible guide wheel according to the needs of different vehicle models. Its material can be a high-strength plastic, aluminum alloy, or a composite structure coated with anti-friction materials, to balance strength, wear resistance, and protection of the seatbelt fabric. The moving mechanism 2 may include a slide rail, rack 21, screw assembly, etc. The drive mechanism 1 can adopt the form of a motor 111 with a gear set for acceleration and reduction, or it can be used with sensors to achieve automatic control, such as by integrating with a vehicle posture detection system, seat control system, or collision warning system, to automatically identify the seating status and make timely adjustments. To avoid interference caused by accidental touches or actions by passengers in non-emergency situations, the drive system can be equipped with a delayed response mechanism or dual-confirmation trigger logic.

[0036] It should be noted that "through-path" refers to the fact that the guide component 3 and the seat belt are not fixedly connected, but rather indirectly constrained through a through-path relationship in the structural path. This indirect guidance method has good adaptability, neither changing the overall functional layout of the seat belt nor interfering with its original winding or tension adjustment functions, and is suitable for various standard three-point seat belt systems. Through the above structural design, this seat belt adjustment structure can guide the seat belt to maintain a relatively reasonable fit path under different riding postures, and to a certain extent improve the uncomfortable pressure or restraint gap of the seat belt on the neck, thereby improving the safety and comfort of the occupants in various usage scenarios. At the same time, this adjustment structure also has strong modular characteristics, which facilitates later integration, adjustment and standardization development across different vehicle platforms, and has good engineering feasibility and promotional value.

[0037] In some embodiments, combined with Figure 2 , Figure 3 The seat belt adjustment structure also includes a housing 4, which is installed inside the car seat back frame 5 and is used to carry and support the drive mechanism 1, the moving mechanism 2 and the guide 3.

[0038] For example, refer to Figure 3 , Figure 4The drive mechanism 1 includes a power assembly 11 and a reduction assembly 13. The power assembly 11 includes a motor 111, a worm gear 113, and a turbine 112. The motor 111 is fixedly mounted on the housing 4, and its output shaft is coaxially connected to the worm gear 113. The turbine 112 is rotatably mounted inside the housing 4, and the worm gear 113 meshes with the turbine 112. The reduction assembly 13 includes a first gear 131 and a second gear 132. A first transmission gear 14 is coaxially connected to the turbine 112, and a second transmission gear 12 is coaxially connected to the first gear 131. The second transmission gear 12 meshes with the second gear 132. Further, the moving mechanism 2 includes a rack 21 and a guide rod 22. The guide rod 22 is disposed on the housing 4, and its length direction is parallel to a first direction. The rack 21 is slidably disposed on the guide rod 22, and the rack 21 meshes with the second gear 132.

[0039] It can be understood that the turbine 112 is coaxially and fixedly connected to the first transmission gear 14 to achieve synchronous rotation. The first transmission gear 14 meshes with the first gear 131, the first gear 131 is coaxially and fixedly connected to the second transmission gear 12, the second transmission gear 12 meshes with the second gear 132, and the second gear 132 finally meshes with the rack 21 in the moving mechanism 2, thus constructing a multi-stage deceleration and transmission path.

[0040] For example, the guide member 3 is fixedly connected to the rack 21 and connected to the seat belt structure, so that the portion of the seat belt near the occupant's neck can be moved away from the neck area by the movement of the rack 21. In this structure, the cooperation of the worm gear 113 and the turbine 112 constitutes a primary reduction transmission mechanism with a reverse torque locking function, which is beneficial for maintaining the stability of the current position when the motor 111 is not working. The turbine 112 and the first transmission gear 14 form a compound reduction system, wherein the number of teeth of the first transmission gear 14 is less than the number of teeth of the first gear 131, and the number of teeth of the first gear 131 is less than the number of teeth of the second gear 132. According to the principle of gear transmission ratio, if the number of teeth of the driving gear is small and the number of teeth of the driven gear is large, a larger torque and a lower speed can be obtained at the output end, which is suitable for the coordinated requirements of response speed and output force of this seat belt adjustment structure.

[0041] Based on this, the motor 111 starts and drives the output shaft of the motor 111 to rotate, which drives the coaxial worm 113 to rotate. The worm 113 meshes with the turbine 112 to form a transmission structure. During this process, the worm 113 acts as the driving element and drives the turbine 112 to rotate at a lower speed at a higher speed, completing a deceleration process and realizing torque amplification. Then, the transmission continues through the first transmission gear 14 coaxially connected to the turbine 112. The first transmission gear 14 meshes with the first gear 131 to form a second-stage reduction structure, further reducing the speed and increasing the torque. The first gear 131 is coaxially connected to the second transmission gear 12 and continues to mesh with the second gear 132 to construct a third-stage reduction structure, realizing a compound three-stage reduction transmission, thereby generating a large linear thrust at the output end, i.e., on the rack 21 driven by the second gear 132.

[0042] For example, the rack 21 is provided with a sliding hole, which slides in cooperation with the guide rod 22 fixedly mounted on the housing 4, so that the rack 21 maintains directional stability when moving along the direction of the guide rod 22, avoiding deviation or jamming, which is beneficial to improving the accuracy of movement and service life. One end of the guide member 3 is connected to the rack 21, and the other end is connected to the seat belt. When the rack 21 slides in the first direction under the drive of the motor 111, the guide member 3 moves synchronously with it, so that the part of the seat belt near the passenger's neck area moves away from the neck area. Therefore, when the vehicle is impacted and the occupant slips relative to each other, the seat belt will not compress the passenger's neck, which is beneficial to reducing the risk of secondary injury caused by excessive tightening of the seat belt.

[0043] Furthermore, the worm gear 113 structure has unidirectional driving capability, which can prevent the reverse inertia after a collision from causing the structure to malfunction. The multi-stage gear meshing transmission further increases the output force by gradually increasing the transmission ratio, ensuring that the guide 3 can be quickly driven to the target position in an emergency, while maintaining a compact structure under low power conditions.

[0044] The housing 4 is made of high-strength engineering plastics or lightweight metal materials. Its internal structure is spatially optimized to ensure that the various drive units and transmission components are compactly arranged without interference. The shape of the housing 4 is designed according to the shape of the car seat back frame 5, providing good installation adaptability. The motor 111 is a DC motor 111 or a servo motor 111 with fast response capability. Together with the reduction structure and transmission link, it can complete the action command in a short time, improving the working reliability of the seat belt adjustment structure under collision conditions.

[0045] In summary, this seatbelt adjustment structure does not rely on manual judgment, does not affect the normal function of the seatbelt, and its response is only triggered under extreme abuse conditions, without affecting daily riding comfort. It possesses high practicality and engineering feasibility. From structural design and motion linkage to mechanical output, everything is based on clear component fit and transmission principles, with clear logic and a complete technical path. It can be used in high-end passenger vehicles with zero-gravity reclining seat functions, demonstrating significant industrialization potential.

[0046] In some implementations, combined with Figure 1 , Figure 4 The guide member 3 is provided with a notch 31 and a connecting hole 32. The connecting hole 32 is a through hole structure used for the seat belt to pass through and maintain its positioning on the guide member 3. Specifically, the notch 31 is an opening structure extending from the outside of the guide member 3 towards the connecting hole 32. One end of the notch 31 communicates with the connecting hole 32, and the other end communicates with the outside of the guide member 3. The width of the notch 31 is smaller than the width of the seat belt, so that during the initial insertion of the seat belt, the seat belt can be pressed into the connecting hole 32 along the direction of the notch 31 by a manual directional action, which can achieve a controllable assembly operation. However, during normal use, because the width of the notch 31 is smaller than the width of the seat belt, the seat belt is not easy to detach from the connecting hole 32 on its own, thereby improving the connection stability and anti-detachment ability between the seat belt and the guide member 3 to a certain extent.

[0047] Understandably, this structural design utilizes dimensional differences to create a unidirectional entry structure, which helps to limit the risk of loosening during use while allowing for rapid manual assembly. The diameter of the connecting hole 32 is slightly larger than the combined thickness and width of the seat belt, allowing the seat belt to slide freely within it without detaching due to vibration or inertia. The notch 31 can be a straight groove, a V-groove, or a curved structure, and its specific cross-sectional profile can be designed to match the material elasticity, seat belt flexibility, and insertion force. The guide component 3 can be manufactured using injection molding or stamping processes to ensure the relative dimensional accuracy of the notch 31 and the connecting hole 32 during mass production, thereby improving the stability and safety of the entire seat belt adjustment structure under actual working conditions. This structure helps improve the ease of seat belt installation and reliability, and is suitable for passenger car seat systems that require seat belt guidance and positioning during seat adjustment.

[0048] Secondly, referring to Figures 1 to 4 This application provides an automobile seat, including a seat belt adjustment structure as described in the first aspect.

[0049] In some embodiments, the car seat also includes a backrest frame 5, a seat belt adjustment structure configured to be located within the backrest frame 5 and close to the passenger's shoulder area, and a guide 3 extending from within the backrest frame 5 to the outside to facilitate fastening with the seat belt.

[0050] Thirdly, this application also provides a vehicle including the car seat of the second aspect.

[0051] The vehicle may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this disclosure does not make any specific restrictions.

[0052] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0053] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0054] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0055] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A seat belt adjusting structure characterized by comprising: The device includes a drive mechanism, a moving mechanism, and a guide member. The drive mechanism and the moving mechanism are both configured to be located in the backrest frame of the car seat. The drive mechanism is drively connected to the moving mechanism. The guide member is located on the moving mechanism and configured to allow the seat belt of the car seat to pass through. The drive mechanism is configured to drive the moving mechanism and the guide member to move in a direction closer to or away from the passenger's neck area.

2. The safety belt adjusting structure according to claim 1, characterized by It also includes a housing configured to be located in the backrest frame of a car seat, and the drive mechanism, the moving mechanism and the guide are all mounted on the housing.

3. The seat belt adjusting structure according to claim 2, characterized by The drive mechanism includes a power component, which is connected to the moving mechanism in a transmission manner.

4. The seat belt adjusting structure according to claim 3, characterized by The power assembly includes a motor, a turbine, and a worm gear. The motor is mounted on the housing, the worm gear is coaxially mounted on the output shaft of the motor, the turbine is rotatably mounted inside the housing and meshes with the worm gear, and the turbine is also connected to the moving mechanism via a transmission.

5. The seat belt adjustment structure according to claim 4, characterized in that, The drive mechanism also includes a reduction gear assembly, which is drively connected between the turbine and the moving mechanism.

6. The seat belt adjustment structure according to claim 5, characterized in that, The deceleration assembly includes a first gear and a second gear, which are all connected in a transmission manner to the first gear, the second gear and the turbine. The second gear is configured to be connected in a transmission manner to the moving mechanism to drive the moving mechanism to move in a first direction.

7. The seat belt adjustment structure according to claim 6, characterized in that, A first transmission gear is coaxially connected to the turbine, and the first transmission gear meshes with the first gear. A second transmission gear is coaxially connected to the first gear, and the second transmission gear meshes with the second gear.

8. The seat belt adjustment structure according to claim 7, characterized in that, The number of teeth on the first transmission gear is less than the number of teeth on the first gear, and the number of teeth on the first gear is less than the number of teeth on the second gear.

9. The seat belt adjustment structure according to any one of claims 6 to 8, characterized in that, The moving mechanism includes a rack and a guide rod. The guide rod is disposed on the housing and its length direction is parallel to the first direction. The rack is slidably disposed on the guide rod and meshes with the second gear.

10. The seat belt adjustment structure according to any one of claims 1 to 8, characterized in that, The guide has a notch and a connecting hole. One end of the notch is connected to the connecting hole and the other end is connected to the outside. The width of the notch is smaller than the width of the seat belt.

11. A car seat, characterized in that, Includes the seat belt adjustment structure as described in any one of claims 1 to 10.

12. The automobile seat according to claim 11, characterized in that, It also includes a backrest frame, wherein the seat belt adjustment structure is configured to be located within the backrest frame and close to the passenger's shoulder area, and the guide extends from within the backrest frame to the outside.

13. A vehicle, characterized in that, Including the car seat as described in any one of claims 11 or 12.

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