Safety belt retractor adaptive module and automotive seat

Abstract

The utility model provides a kind of safety belt reel self-adapting module and car seat, comprising: electromagnet, armature, friction pressing plate, car sensing component and pawl;The electromagnet is powered on and drives armature axial movement, the armature drives friction pressing plate to move away from car sensing component, the car sensing component is free to rotate and drives pawl to be in free rotation state, i.

Description

Technical Field

[0001] This utility model relates to the field of vehicle seat structure, specifically to a seat belt retractor adaptive module and an automobile seat. Background Technology

[0002] Currently, there is a significant market demand for zero-gravity seats in vehicles, as passengers have higher requirements for seat comfort. This, in addition to meeting comfort needs, also places higher demands on the functionality and application scenarios of seat belts. 1. Adaptive Angle: During seat adjustment, the seat belt needs to be pulled out properly when the occupant is wearing the seat belt. Traditional retractors cause the seat belt to lock due to changes in the seat belt angle during seat adjustment, preventing the seat belt from being pulled out properly. Conventional adaptive retractors have a small adaptive seat belt angle after the seat belt is properly worn, which cannot meet the requirements and cannot provide protection for the occupant outside the working range.

[0003] 2. Forward reclining adaptive: Traditional retractors lock the seat feel when the seat back is reclined forward due to the change in seat angle, preventing the webbing from being pulled out properly and affecting the adjustment function. However, if the latch is inserted into the latch to recline the seat forward, the seat feel is fixed, and the webbing pull-out function will abnormally affect the seat adjustment.

[0004] Traditional adjustable ride feel typically employs the following approach: 1. A cable is installed at the position of the seat and backrest. When the seat is adjusted forward and backward, the length of the fixed point will change. The retractor adjusts the position of the base and the seat according to the length change to achieve adaptive adjustment. 2. The system adopts an electromagnetic design, with an electromagnet placed outside the base. The electromagnet moves back and forth according to the electrical signal, and the vehicle sensor base is fixed or released by a pin, thus achieving the fixation and free rotation of the vehicle sensor base. 3. The system adopts a motor-driven design, with a motor controlling the angle movement of the retractor's vehicle sensor seat. This enables communication compensation between the seat motor's movement angle and the retractor's motor. When the seat rotates a certain angle, the retractor's vehicle sensor motor rotates the seat by the same angle. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of this utility model is to provide an adaptive seat belt retractor module and a car seat.

[0006] According to the present invention, a seat belt retractor adaptive module includes: an electromagnet, an armature, a friction plate, a vehicle sensing component, and a pawl. The electromagnet is provided with an armature, and a friction plate is provided at one end of the armature. The side of the friction plate facing away from the armature presses against the vehicle sensing component and restricts the rotation of the vehicle sensing component. The vehicle sensing component is connected to a pawl. When the electromagnet is energized, it drives the armature to move axially. The armature drives the friction plate away from the vehicle sensing component. The vehicle sensing component rotates freely and drives the pawl to be in a free rotation state. That is, the pawl is always in a relatively balanced state under the action of gravity and will not move radially relative to the retractor spindle due to changes in angle. Therefore, the retractor spindle is not fixed by the pawl and can rotate freely.

[0007] Preferably, an electromagnet is provided around the armature and moves axially under the electromagnetic action of the electromagnet, and a spring is sleeved around the armature. When the electromagnet is de-energized, the armature, under the action of the spring, drives the friction plate to press against the counterweight. When the electromagnet is energized, the armature overcomes the spring force under electromagnetic action and drives the friction plate to move away from the counterweight.

[0008] Preferably, the vehicle sensing component includes: a vehicle sensing arm, a steel ball, a vehicle sensing seat, and a counterweight; The vehicle sensor seat is mounted on the outside of the steel ball and slides along the outer periphery of the steel ball. A counterweight is connected to the vehicle sensor seat. The vehicle sensor arm is mounted on the vehicle sensor seat, and the pawl is mounted on the vehicle sensor arm.

[0009] Preferably, friction plates and covers are respectively provided on both sides of the counterweight, and the friction surfaces of the friction plates and covers clamp the counterweight on both sides to restrict the movement of the counterweight.

[0010] Preferably, the electromagnet, armature, friction plate, vehicle sensing component, pawl, snap cover, and retractor spindle are all installed in the cavity formed by the locking cover and the lower end cover.

[0011] Preferably, the pawl is mounted on a connecting rod, one end of which is connected to the vehicle sensor arm, and the other end is rotatably mounted in the cavity.

[0012] Preferably, the retractor spindle is provided with gears on its circumference for engaging with a ratchet pawl.

[0013] Preferably, the retractor mandrel is used to wind the webbing.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This application achieves the fixation or rotation of the vehicle sensor by switching the electromagnet on and off. When the electromagnet is de-energized, the friction plate is subjected to the axial pressure of the spring, which fixes the counterweight and the friction plate in the circumferential direction through friction, thereby achieving the function of fixing the vehicle sensor. 2. This application does not require an additional cable mechanism to achieve the conversion of seat angle changes; 3. Compared with the use of electromagnetic pins for fixing, this application achieves higher fixing accuracy through friction fixing, with an angular accuracy of 1°, which is more than 3° higher than that of traditional electromagnetic pins.

[0015] 4. Compared with the traditional structure of the vehicle sensor seat driven by a motor, this application has a simpler structure and lower requirements for the control system. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 Exploded view of the retractor adaptive module; Figure 2 Photos of the vehicle-inspired components have been released. Figure 3 A schematic diagram of the internal structure of the retractor adaptive module; Figure 4 This is a schematic diagram of the retractor spindle structure; As shown in the figure: Detailed Implementation

[0017] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0018] like Figure 1 , Figure 3 and Figure 4As shown, this embodiment includes: an electromagnet 2, an armature 4, a friction plate 5, a vehicle sensing component 6, and a pawl 7. The electromagnet 2 houses the armature 4, and one end of the armature 4 is fitted with the friction plate 5. The side of the friction plate 5 facing away from the armature 4 presses against the vehicle sensing component 6, restricting its rotation. The vehicle sensing component 6 is connected to the pawl 7. When the electromagnet 2 is energized, it pulls the armature 4 axially back, causing the friction plate 5 to move away from the vehicle sensing component 6. The vehicle sensing component 6 then rotates freely. Since the pawl 7 is mounted on the vehicle sensing component 6, it also rotates freely. Under gravity, the center of gravity of the vehicle sensing component 6 and the pawl 7 always points downwards. Even if the seat angle changes, gravity will adjust the center of gravity downwards, ensuring that the pawl 7 never restricts the rotation of the retractor spindle 10. The retractor spindle 10 can be freely pulled out. The retractor spindle 10 is used for winding webbing. Electromagnet 2, armature 4, friction plate 5, vehicle sensor assembly 6, pawl 7, latch cover 8, and retractor spindle 10 are all installed within the cavity formed by the locking cover 1 and the lower end cover 9. Pawl 7 is mounted on a connecting rod, one end of which is connected to the vehicle sensor arm 61, and the other end is rotatably mounted within the cavity. Gears for meshing with pawl 7 are provided around the periphery of the retractor spindle 10.

[0019] like Figure 2 As shown, the vehicle sensing assembly 6 includes: a vehicle sensing arm 61, a steel ball 62, a vehicle sensing seat 63, and a counterweight 64. The vehicle sensing seat 63 is mounted on the outside of the steel ball 62 and slides along the outer periphery of the steel ball 62. The counterweight 64 is connected to the vehicle sensing seat 63. The vehicle sensing arm 61 is rotatably mounted on the vehicle sensing seat 63, and a pawl 7 is mounted on the vehicle sensing arm 61. Friction pressure plates 5 and covers 8 are respectively provided on both sides of the counterweight 64. The friction surfaces of the friction pressure plates 5 and covers 8 clamp the counterweight 64 on both sides, restricting the movement of the counterweight 64.

[0020] An electromagnet 2 is arranged around the armature 4 and moves axially under the electromagnetic action of the electromagnet 2. A spring 3 is wrapped around the armature 4. When the electromagnet 2 is de-energized, the armature 4, under the action of the spring 3, drives the friction plate 5 to press against the counterweight 64. When the electromagnet 2 is energized, the armature 4, under the electromagnetic action, overcomes the elastic force of the spring 3 and drives the friction plate 5 to move away from the counterweight 64. More specifically, the electromagnet 2 is located on the side closer to the locking cover 1, surrounding the cylindrical armature 4. After the electromagnetic coil of the electromagnet 2 is energized, it will generate an axial electromagnetic thrust on the armature 4. The direction of this electromagnetic thrust is opposite to the direction of the elastic force of the spring 3 and is away from the counterweight 64. A protruding edge is provided at the end of the armature 4 facing the counterweight 64. The spring 3 is located between the protruding edge and the inner wall of the locking cover 1. The spring 3 pushes the armature 4 towards the counterweight 64 through the thrust acting on the protruding edge.

[0021] Working principle: In the traditional solution, since the car sensor arm 61 is rotatably connected to the car sensor seat 63, the car sensor seat 63 will not move when the seat is adjusted. When the steel ball 62 rolls under the action of gravity, it will push the car sensor arm 61 upward, so that the pawl 7 restricts the rotation of the retractor spindle 10, thus causing the webbing to be unable to be pulled out normally.

[0022] With the solution of this embodiment, when the seat needs to be adjusted, the electromagnetic coil of electromagnet 2 is energized (the energization of electromagnet 2 can be achieved through a conventional triggering device in the art, i.e., the seat adjustment action will trigger the energization of electromagnet 2), pulling back the armature 4 and the friction plate 5. The counterweight 64 disengages from the friction plate 5, allowing the vehicle sensor seat 63 to rotate freely. The position of the vehicle sensor seat 64 is adjusted according to gravity, while the vehicle sensor arm 61 and its pawl 7 remain stationary relative to the retractor spindle 10, thus not restricting the normal pulling out of the webbing. After the seat adjustment is completed, the electromagnetic coil is de-energized, and the armature 4 is no longer subject to electromagnetic force. Consequently, the spring 3 pushes the counterweight 64 back to the friction plate 5, realizing the function of fixing the vehicle sensor assembly 6.

[0023] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A seat belt retractor adaptive module, characterized by, include: Electromagnet (2), armature (4), friction plate (5), vehicle sensing component (6), and pawl (7); An armature (4) is provided inside the electromagnet (2). A friction plate (5) is provided at one end of the armature (4). The friction plate (5) presses against the vehicle sensing component (6) on the side facing away from the armature (4) and restricts the rotation of the vehicle sensing component (6). The vehicle sensing component (6) is connected to a pawl (7). When the electromagnet (2) is energized, it drives the armature (4) to move axially. The armature (4) drives the friction plate (5) away from the vehicle sensing component (6). The vehicle sensing component (6) is allowed to rotate freely and drives the pawl (7) to be in a free rotation state.

2. The seat belt retractor adaptive module of claim 1, wherein: An electromagnet (2) is provided around the armature (4) and moves along the axial direction under the electromagnetic action of the electromagnet (2). A spring (3) is wrapped around the armature (4). When the electromagnet (2) is de-energized, the armature (4) drives the friction plate (5) to press against the counterweight (64) under the action of the spring (3); When the electromagnet (2) is energized, the armature (4) overcomes the elastic force of the spring (3) under electromagnetic action and drives the friction plate (5) to move away from the counterweight (64).

3. The seat belt retractor adaptive module of claim 1, wherein, The vehicle sensing component (6) includes: a vehicle sensing arm (61), a steel ball (62), a vehicle sensing seat (63), and a counterweight (64). The vehicle sensor seat (63) is installed on the outside of the steel ball (62) and slides along the outer periphery of the steel ball (62). A counterweight (64) is connected to the vehicle sensor seat (63). The vehicle sensor arm (61) is installed on the vehicle sensor seat (63). The pawl (7) is installed on the vehicle sensor arm (61).

4. The seat belt retractor adaptive module of claim 3, wherein: Friction plates (5) and covers (8) are respectively provided on both sides of the counterweight (64). The friction surfaces of the friction plates (5) and covers (8) are clamped on both sides of the counterweight (64) to restrict the movement of the counterweight (64).

5. The seat belt retractor adaptive module of claim 4, wherein: Electromagnet (2), armature (4), friction plate (5), vehicle sensing component (6), pawl (7), snap cover (8) and retractor spindle (10) are all installed in the cavity formed by the locking cover (1) and the lower end cover (9).

6. The seat belt retractor adaptive module of claim 5, wherein: The pawl (7) is mounted on the connecting rod, one end of which is connected to the vehicle sensor arm (61), and the other end is rotatably mounted in the cavity.

7. The seat belt retractor adaptive module of claim 1, wherein: The retractor spindle (10) has gears on its periphery for engaging with the pawl (7).

8. The seat belt retractor adaptive module of claim 7, wherein: The retractor spindle (10) is used to wind the webbing.

9. An automotive seat characterized by: The seatbelt retractor adaptive module according to any one of claims 1-8 is adopted.

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