ANCHOR-CAMPER MODULE FOR SEAT BELTS

The anchor-tensioning module addresses the insufficient restraint of tilted seats by adjusting its position using micro gas generators to move the anchor, preventing the submarine effect and enhancing passenger safety.

DE102020212030B4Active Publication Date: 2026-01-22HYUNDAI MOTOR CO LTD +1
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Patent Information

Application Number
DE102020212030
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Priority Date
2020-04-21
Filing Date
2020-09-24
Publication Date
2026-01-22
Estimated Expiration
2040-09-24

AI Technical Summary

Technical Problem

Existing seatbelt anchor pretensioners are insufficient in restraining passengers when the vehicle seat is tilted at a steep angle, leading to the 'submarine effect' where the lower body is inadequately restrained, increasing the risk of injury during collisions.

Method used

An anchor-tensioning module that adjusts its position based on the seat's tilt angle and passenger posture, using micro gas generators to actuate wires that move the anchor relative to the seat, ensuring effective restraint by moving it downwards or forwards depending on the seat's position.

Benefits of technology

Effectively prevents the submarine phenomenon by increasing restraint force on the passenger's lower body, minimizing injury risk by adapting to both normal and relaxed seating positions.

✦ Generated by Eureka AI based on patent content.

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Abstract

Anchor tensioning module for a seat belt, including: an anchor (100) which is arranged on one side of a seat cushion and to which a tongue of the seat belt is attached; a base (200) provided on a lower side of the armature (100), the base (200) comprising a first actuating part (201) generating an explosion pressure and provided on a rear side of the base (200), and a second actuating part (202) generating an explosion pressure and provided on a front side of the base (200); a first wire (300) which is connected to the base (200) and the armature (100) and makes it possible to move the armature (100) downwards when the first actuating part (201) is actuated, and a second wire (400) provided at the base (200) which moves the first wire (300) while inserted into the base (200) when the second actuating part (202) is actuated to allow the armature to move forward while being moved downwards, wherein the anchor (100) is moved relative to a seat to restrain the body of a passenger in the event of a collision.
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Description

BACKGROUND(a) Technical field

[0001] The present disclosure relates to an anchor pretensioner module for a seat belt that restrains a passenger of a vehicle by displacing the location of an anchor in the event of an accident (e.g., a collision with one or more other vehicles and / or objects) due to a tilt angle of a seat. (b) Description of the related situation

[0002] As vehicle technology advances, the environment in which a collision can occur also changes. Accordingly, research and development of devices to protect passengers from various types of accidents that can happen while driving has become increasingly important. A seatbelt, as a primary device for protecting passengers in an accident, is of paramount importance.

[0003] The seat belt is a device that safely protects the passenger in an accident (e.g., a collision with one or more vehicles and / or objects) and should only release when it is unlocked by the passenger. The seat belt typically comprises a webbing, a retractor, an anchor point, a tensioner, and a buckle.

[0004] The pretensioner (also known as a seatbelt tensioner) is used to detonate the embedded igniter powder before an airbag is deployed, retracting the seatbelt webbing and thus securing the passenger in the seat to maintain proper posture. The anchor pretensioner is a device attached to a seat or vehicle body to pull the seatbelt webbing to restrain a lower limb, such as the passenger's pelvis. The anchor pretensioner can be attached to the seatbelt for more effective restraint of the passenger's body.

[0005] Furthermore, a submarine phenomenon can occur during a collision, meaning that the body is pushed downwards by the seatbelt, even if the passenger is wearing it. This submarine phenomenon can lead to injury, for example, if the passenger's lower body becomes entangled in the seatbelt.

[0006] To prevent the submarine effect, an inventive device was developed that alters the angle of the anchor tensioner upon collision. In the case of autonomous vehicles, the seating arrangement and posture can vary considerably, but if the seat is tilted at a steep angle, the existing anchor tensioner alone is insufficient to protect the passenger. When the seat is tilted at a steep angle, even with the anchor tensioner engaged, the restraint force of the lower body is inadequate, and thus the submarine effect occurs, increasing the likelihood of passenger injury.

[0007] From DE 10 2018 120 610 A1, a pre-tensioning module is already known, which moves an armature downwards and simultaneously forwards via two wires through the explosion pressure of an actuating part. SUMMARY

[0008] The purpose of this disclosure is therefore to provide an anchor-tensioning module that can determine the posture of a passenger depending on the tilt angle of a vehicle seat and can be configured to move based on the passenger's posture so that the passenger's body is sufficiently restrained in a relaxed position even in an accident. Due to its simple structure, this module should be easy to manufacture and install, and easy to operate and replace after a collision.

[0009] The problem is solved by an anchor pretensioner module with the features of claims 1 and 13. Advantageous further developments result from the dependent claims.

[0010] An anchor-tensioner module for a seat belt according to the present disclosure may comprise: an anchor arranged on one side of a seat cushion and to which a tongue of the seat belt is attached; a base provided on a lower side of the anchor, the base having a first actuating part that generates an explosive pressure and is provided on a rear side of the base, and a second actuating part that generates the explosive pressure and is provided on a front side of the base; a first wire connected to the base and the anchor and enabling the anchor to be moved downwards when the first actuating part is actuated; and a second wire provided on the base and moving the first wire as it is inserted into the base when the second actuating part is actuated, to enable the anchor to be moved forwards as it is moved downwards.The anchor is moved relative to a seat to restrain a passenger's body in the event of a collision.

[0011] The first wire can have a first end connected to the armature and a second end inserted into the base from the rear to be connected to a front of the first actuating part, and when the first actuating part is actuated, the second end can be moved to the front of the base (and thus the first end of the first wire can be pulled), thereby moving the armature downwards.

[0012] A cylinder connected in such a way that it can be moved back and forth can be provided at the rear of an upper section of the base, and the first wire can be inserted through the cylinder into the base and moved forward together with the cylinder when the second actuating part is actuated.

[0013] The first actuating part and the second actuating part can be provided on the lower section of the base, and a first end of the second wire can be connected to the cylinder and extend to the front of the base to be bent at the front of the base, and then a second end of the second wire can be connected behind the second actuating part, and the second end of the second wire can be moved to the rear of the base when the second actuating part is actuated to move the cylinder, thereby moving the armature forward as it is moved downwards.

[0014] The anchor pretensioner module may further include: a control unit that detects a tilt angle of the seat to determine that the seat is in a normal position when the tilt angle is a certain angle or less, and to determine that the seat is in a relaxed position when the tilt angle is a certain angle or more, and that controls the first actuating part to operate when the collision occurs in the normal position, and controls the second actuating part to operate when the collision occurs in the relaxed position.

[0015] The first actuating part can be actuated when the collision occurs in the normal position, so that the anchor can be moved downwards relative to the seat, and the second actuating part can be actuated when the collision occurs in the relaxed position, so that the anchor can be moved forwards and downwards relative to the seat.

[0016] Furthermore, the base can consist of an upper tube located on an upper part of the base and a lower tube connected to the upper tube and arranged parallel to the upper tube below the upper tube, wherein the first actuating part can be provided at a rear of the lower tube and the second actuating part at a front of the lower tube, and a cylinder can be provided at a rear of the upper tube which can be connected in a forward-sliding manner.

[0017] A first end of the first wire can be connected to the anchor so that it extends vertically through the cylinder and is inserted into the back of the lower tube, and then a second end of the first wire can be connected to the front of the first actuating part, and a first end of the second wire can be connected to the cylinder, and the second end of the first wire can be connected to the front of the second actuating part through the fronts of the upper tube and the lower tube.

[0018] The base may include: a front cartridge covering the front of the base and embedded with the second actuating part on the underside of the base, and a rear cartridge covering the back of the base and embedded with the first actuating part on the underside of the base.

[0019] Terminals can be provided at the second end of the first wire and at the second end of the second wire so that the first wire can be moved forward when the first actuating part is actuated, and so that the second wire can be inserted into the base when the second actuating part is actuated.

[0020] Furthermore, the clamps may each comprise the following: a plurality of balls which are discharged when the first actuating part or the second wire is actuated in order to fix the first or second wire so that they are not moved in the opposite direction after the collision.

[0021] The first actuating part and the second actuating part can be micro gas generators (MGGs).

[0022] Furthermore, the first actuating part may be provided in the center of a lower end of the base, the ends of the first wire and the second wire may be connected next to the first actuating part, and the armature preloading module may include: a gas line, which is a flow path through which gas exits from the first actuating part, and which consists of a first line connected to a rear of the end of the first wire and a second line connected to a rear of the end of the second wire, and which includes: a valve that can block the fluid flow to control a gas exit path.

[0023] The armature preload module may further include: a control unit that detects a tilt angle of a seat to determine that the seat is in a normal position when the tilt angle is a certain angle or less, and to determine that the seat is in a relaxed position when the tilt angle is a certain angle or more, and that controls the valve so that gas can flow behind the end of the first wire through the first line when the collision occurs in the normal position, and that gas can flow behind the end of the second wire through the second line when the collision occurs in the relaxed position.

[0024] According to the anchor-tensioning module as disclosed herein, the anchor-tensioning module can move based on the passenger's body posture to effectively restrain the passenger's body even when the collision occurs in both the relaxed and normal body postures, thereby preventing the submarine phenomenon.

[0025] Furthermore, the anchor pretensioner module is easy to manufacture and assemble due to its simple structure and can be easily operated and replaced after a collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above-mentioned and other tasks, features and other advantages of the present disclosure will be more clearly understood from the following detailed description when taken in conjunction with the accompanying drawings. Fig. Figure 1 is a perspective diagram illustrating an anchor-pretensioner module according to an exemplary embodiment of the present disclosure. Fig. Figure 2 is a cross-sectional diagram illustrating the anchor prestressing module according to an exemplary embodiment of the present disclosure. Fig. 3 and Fig. Figure 4 are diagrams illustrating changes in the position of an anchor when a first actuating part of the anchor pretensioner module is actuated according to an exemplary embodiment of the present disclosure. Fig. 5 and Fig. Figure 6 are diagrams illustrating changes in the position of an anchor when a second actuating part of the anchor pretensioner module is actuated according to an exemplary embodiment of the present disclosure. Fig. 7 and Fig. Figure 8 are diagrams illustrating states in which a wire of the armature pretensioner module is fixed according to an exemplary embodiment of the present disclosure. Fig. Figure 9 is a cross-sectional diagram of an anchor pretensioner module according to another exemplary embodiment of the present disclosure. DETAILED DESCRIPTION OF THE REVELATION

[0027] It is understood that the term "vehicle" or "vehicle-related" or any other similar term as used herein includes motor vehicles in general, such as passenger cars including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles, watercraft including a variety of boats and ships, aircraft, and the like, as well as hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles, and other vehicles using alternative fuels (e.g., fuels derived from resources other than petroleum). As mentioned herein, a hybrid vehicle is a vehicle that has two or more sources of propulsion, e.g., both gasoline and electric power.

[0028] The terminology used herein serves only to describe certain embodiments and is not intended to limit the disclosure. As used herein, the singular forms "one," "a," "a," and "the" are to include the plural forms unless the context clearly indicates otherwise. Furthermore, it is understood that the terms "includes" and / or "comprehensive," when used in this disclosure, indicate the presence of specified features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. In the form used herein, the term "and / or" includes all combinations of one or more of the related listed items.Throughout the entire disclosure, unless expressly stated otherwise, the word "include" and variants such as "includes" or "comprehensive" are understood to imply the inclusion of the specified elements, but not the exclusion of other elements. Furthermore, the terms "unit," "-er," "-or," and "module" as described in the disclosure signify units for processing at least one function and operation and can be implemented by hardware components or software components and combinations thereof.

[0029] Furthermore, the control logic of the present disclosure can be embodied as a non-volatile, computer-readable medium on a computer-readable medium containing executable program instructions that are executed by a processor, controller, or the like. Examples of computer-readable media include, but are not limited to, ROM, RAM, compact disc (CD)-ROMs, magnetic tapes, floppy disks, flash drives, smart cards, and optical data storage devices. The computer-readable medium can also be distributed in networked computer systems, such that the computer-readable medium is stored and executed in a distributed manner, for example, by a telematics server or a device control network (Controller Area Network; CAN).

[0030] Terms such as "first" and / or "second" may be used to describe different components, but the components should not be limited by these terms. The terms are used only for the purpose of distinguishing one component from another, and without deviating from the scope of application according to the concept of this disclosure, for example, the first component may be referred to as the second component, and likewise the second component may also be referred to as the first component.

[0031] When a component is described as "connected" or "coupled" to another component, the component may be directly connected or coupled to that other component, but it should be understood that other components may also be present between them. Conversely, when a component is described as "directly connected" or "directly coupled" to another component, it should be understood that no other components may be present between them. Other expressions describing the relationship between components, such as "between" and "immediately between" or "adjacent" and "directly adjacent to," should be interpreted in the same way.

[0032] The present disclosure is described in detail below by explaining preferred exemplary embodiments of the present disclosure with reference to the accompanying drawings. The same reference numerals in each drawing denote the same elements.

[0033] A pretensioner (also known as a seatbelt pretensioner) is a component of a seatbelt. Its purpose is to detonate embedded propellant in the event of a crash, retracting a section of the seatbelt webbing and thus securing the passenger to the seat and maintaining proper posture. Actuating the pretensioner can protect the passenger. However, as described above, if the seat is at a certain angle or more than that, a submarine effect can occur even if the pretensioner is activated.

[0034] The present disclosure relates to an anchor tensioner that can actuate a first actuating part 201 when the seat is in a normal position and can actuate a second actuating part 202 when the seat is in a relaxed position, so that the first actuating part 201 and / or the second actuating part 202 is actuated on the basis of the passenger's body position, thereby effectively protecting the passenger in the event of a collision.

[0035] Fig. Figure 1 is a perspective diagram of an anchor-pretensioner module according to an exemplary embodiment of the present disclosure, and Fig. Figure 2 is a cross-sectional diagram of the anchor prestressing module according to an exemplary embodiment of the present disclosure. With reference to Fig. 1 and Fig. 2. According to an exemplary embodiment of the present disclosure, the armature pretensioner module can consist of an armature 100, a base 200, a first wire 300 and a second wire 400.

[0036] The Anchor 100 is a device in which a tongue of the seat belt is attached and fixed. The Anchor 100 may be positioned laterally on a seat cushion.

[0037] The base 200 can be positioned below the anchor 100. The anchor 100 and the base 200 can be connected by the first wire 300, which extends downwards from the anchor 100. The base 200 can be positioned to the side of a seat.

[0038] The base 200 can be equipped with the first actuating element 201 and the second actuating element 202 for generating an explosion pressure. The first actuating element 201 and the second actuating element 202 can be micro gas generators (MGGs) that supply high-pressure gas upon collision. The first actuating element 201 can be located at the rear of the base 200, and the second actuating element 202 can be located at the front of the base 200. That is, the second actuating element 202 can be located at a point spaced forward from the location of the first actuating element 201.

[0039] A cylinder 203 can be provided on the rear side of an upper section of the base 200. The cylinder 203 can be connected to the upper section of the base 200 in such a way that it can be moved back and forth.

[0040] The first wire 300 can be connected to the armature 100 and the base 200, and the second wire 400 can be positioned within the base 200. The relative position of the first wire 300 and the second wire 400 to the armature 100 is changed by a collision between the first wire 300 and the second wire 400.

[0041] Fig. 3 and Fig. Figure 4 are diagrams illustrating changes in the position of the anchor 100 when the first actuating part 201 of the anchor pretensioner module is operated, i.e. actuated, according to an exemplary embodiment of the present disclosure.

[0042] With reference to Fig. 3 and Fig. 4. The first wire 300 can be connected to the base 200 and the armature 100. Specifically, one end of the first wire 300 can be connected to the armature 100, and a second end of the first wire 300 can be inserted from the rear of the base 200 into the interior of the base 200. The second end of the first wire 300 can be connected to the front of the first actuating part 201. When the first actuating part 201 is actuated, the second end of the first wire 300 is moved to the front of the base 200, and the first end of the first wire 300 is pulled, allowing the armature 100 to be moved downwards.

[0043] Fig. 5 and Fig. Figure 6 are diagrams illustrating changes in the position, i.e., in the location of the anchor 100, when the second actuating part 202 of the anchor pretensioner module is operated, i.e., actuated, according to an exemplary embodiment of the present disclosure.

[0044] The second wire 400 can be provided within the base 200. One end of the second wire 400 can be connected to the cylinder 203. Since the cylinder 203 is located at the rear of the upper part of the base 200, the first end of the second wire 400 is connected to the base 200 at the rear of the upper section of the base 200. The second wire 400 can extend to the front of the base 200, bent at the front of the base 200, and then the second end of the second wire 400 can be connected behind the location of the second actuating part 202. That is, the first end of the second wire 400 can be located at the back of the upper section of the base 200, the second end of the second wire 400 can be located at the back of the lower section of the base 200, and an intermediate point can be formed in a shape that is bent at the front of the base 200.

[0045] When the second actuating part 202 is actuated, the second end of the second wire 400 is pulled to the rear of the base 200, and the first end of the second wire 400 is moved to the front of the base 200. The cylinder 203, which is connected to the first end of the second wire 400, is pushed forward, and since the first wire 300 passes through the cylinder 203, the first wire 300 is moved downward as it is moved forward. Correspondingly, the armature 100 is moved forward and downward.

[0046] The first wire 300 can be inserted into the base 200 through the cylinder 203 on the underside of the armature 100. Accordingly, when the cylinder 203 is pushed forward, the position of the armature 100 can be moved forward, while the first wire 300 is also moved forward together.

[0047] Furthermore, as in Fig. 1 and Fig. Figure 2 shows that the anchor pretensioner module, according to an exemplary embodiment of the present disclosure, includes a control unit 500. The control unit 500 can detect an inclination angle of the seat in order to determine that the seat is in a normal position when the inclination angle is a certain angle or less, and to determine that the seat is in a relaxed position when the inclination angle is a certain angle or more.

[0048] The control unit 500 can control the first actuator 201 to operate in the event of a collision if the control unit 500 determines that the seat is in the normal position, and it can control the second actuator 202 to operate in the event of a collision if the control unit 500 determines that the seat is in the relaxed position. Accordingly, in the event of a collision in the normal position, the relative position, i.e., the relative position of the anchor 100 to the seat, is shifted downwards by the first actuator 201. If the collision occurs in the relaxed position, the relative position of the anchor 100 to the seat is shifted forwards and downwards by the actuation of the second actuator 202.

[0049] Furthermore, with reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 to Fig. 6. The base 200 consists of an upper tube 210 and a lower tube 220. The upper section of the base 200 can be formed from the upper tube 210, and the lower tube 220 can be arranged parallel to and below the upper tube 210. The first actuating element 201 can be provided at the rear of the lower tube 220, and the second actuating element 202 can be provided at the front of the lower tube 220. The front faces of the upper tube 210 and the lower tube 220 can be connected to each other, and their interiors can be interconnected. The cylinder 203 can be provided at the rear of the upper tube 210 so as to be connected in a forward-sliding manner.

[0050] If the base 200 consists of the upper tube 210 and the lower tube 220, the first end of the first wire 300 can be connected to the anchor 100 to penetrate the cylinder 203 vertically and be inserted into the rear of the lower tube 220, and then the second end of the first wire 300 can be connected to the front of the location of the first actuating part 201. The first end of the second wire 400 can be connected to the cylinder 203, and the second end of the second wire 400 can be connected through the fronts of the upper tube 210 and the lower tube 220 to the front of the location of the second actuating part 202.

[0051] Furthermore, the base 200 can contain a front cartridge 230, which covers the front, and a rear cartridge 240, which covers the back. The second actuating part 202 can be embedded in the underside of the front cartridge 230, and the first actuating part 201 can be embedded in the underside of the rear cartridge 240. The front cartridge 230 and the rear cartridge 240 can protect the base 200 to prevent the first wire 300 and the second wire 400 from being disturbed externally. Since the front cartridge 230 and the second cartridge 240 can be easily separated and replaced in the event of a collision, and since the front cartridge 230 and the second cartridge 240 are replaced after use, easy replacement is an advantage.

[0052] Fig. 7 and Fig. Figure 8 are diagrams illustrating states in which the wire of the armature pretensioner module is fixed according to an exemplary embodiment of the present disclosure.

[0053] With reference to Fig. 7 and Fig. 8. Terminals 600 can be attached to the other ends of the first wire 300 and the second wire 400 according to an exemplary embodiment of the present disclosure. When the first actuating part 201 is actuated, the first wire 300 can be advanced through the terminal 600. When the second actuating part 202 is actuated, the second wire 400 can be inserted into the base 200 with the terminal 600. It is possible to stably control the behavior of the armature 100 by optionally actuating the first actuating part 201 and the second actuating part 202 through the terminal 600.

[0054] A plurality of balls 601 can be provided in the terminal 600. When the first actuating part 201 or the second actuating part 202 is actuated, the plurality of balls 601 are disengaged from the terminal 600 to prevent the first wire 300 or the second wire 400 from moving to the opposite side. That is, the ball 601 can perform a function of fixing the wire. In a collision, the passenger loses balance and is supported by the webbing, so that the passenger's weight is transferred to the webbing. Since the wire can be moved in the opposite direction by the weight transferred to the webbing, the ball 601 is disengaged from the terminal 600 to fix the wire, which should not be moved in the opposite direction.

[0055] Fig. Figure 9 is a cross-sectional diagram of an anchor pretensioner module according to another exemplary embodiment of the present disclosure.

[0056] With reference to Fig. 9. According to another exemplary embodiment of the present disclosure, the armature pretensioner module is provided with an actuating element, e.g., the first actuating element 201 on the center of the lower end of the base 200, and the ends of the first wire 300 and the second wire 400 may be connected next to the actuating element. Furthermore, the armature pretensioner module may include a gas line 700, which is a flow path through which the gas exiting the actuating element flows.

[0057] The gas line 700 is a flow path through which the gas is discharged from the actuating part and can consist of a first line 710 and a second line 720. The first line 710 is connected to the rear of the first wire 300, and the second line 720 is connected to the rear of the second wire 400. The gas line 700 can be fitted with a valve 730 that can block the fluid flow. As shown in Fig. As shown in Figure 6, the valve 730 can also be provided on one of the first line 710 or the second line 720, and it can also be provided on both the first line 710 and the second line 720.

[0058] The control unit 500 of the pre-tensioning module according to another exemplary embodiment of the present disclosure can control the valve 730. In the event of a collision in a normal body position, the control unit 500 can control the gas so that it flows behind the end of the first wire 300 through the first line 710, thus moving the first wire 300 towards the front of the base 200. Correspondingly, the armature 100 can be moved downwards.

[0059] Furthermore, in the event of a collision in the relaxed position, the control unit 500 can control the gas flow so that it passes behind the end of the second wire 400 through the second line 720, thus moving the second wire 400 behind the base 200. The armature 100 can then be moved downwards and forwards accordingly.

[0060] In many cases, the passenger's seating position is normal, but when comfortable, they may recline the seat into a more relaxed position. Since situations requiring passenger intervention in the driving process are reduced, particularly in autonomous vehicles, it is expected that passengers will often recline their seats to sit and rest comfortably.

[0061] If the seat is tilted at a certain angle or more, the restraint force on the lower body is insufficient, so a submarine phenomenon (i.e., a phenomenon of submerging) can occur in a collision. If the submarine phenomenon occurs, even a strapped-in passenger can be seriously injured. Since the seat back is in the relaxed position, the force exerted forward in a collision is particularly increased. As the probability of the submarine phenomenon increases, it is therefore necessary to increase the restraint force in the relaxed position.

[0062] In the case of the anchor-tensioner module according to the present disclosure, in the event of a collision in a normal body position, the position of anchor 100 can be shifted downwards to increase the restraint force of the lower extremity. In the case of the relaxed position, the position of anchor 100 is specifically moved forwards as it is moved downwards, thus preventing the phenomenon of the passenger being pushed forwards. By increasing the restraint force for the passenger in accordance with the change in the position of anchor 100, injury can be minimized. The restraint force for the webbing used to restrain the passenger's pelvis is increased as anchor 100 is moved forwards in the relaxed position.

Claims

[1] Anchor pretensioner module for a seat belt, comprising: an anchor (100) which is arranged on one side of a seat cushion and to which a tongue of the seat belt is attached; a base (200) provided on a lower side of the armature (100), the base (200) comprising a first actuating part (201) generating an explosion pressure and provided on a rear side of the base (200), and a second actuating part (202) generating an explosion pressure and provided on a front side of the base (200); a first wire (300) which is connected to the base (200) and the armature (100) and makes it possible to move the armature (100) downwards when the first actuating part (201) is actuated, and a second wire (400) provided at the base (200) which moves the first wire (300) while inserted into the base (200) when the second actuating part (202) is actuated to allow the armature to move forward while being moved downwards, wherein the anchor (100) is moved relative to a seat to restrain the body of a passenger in the event of a collision. [2] Anchor pretensioner module according to claim 1, wherein the first wire (300) has a first end connected to the anchor (100) and a second end inserted from the rear of the base (200) into the base (200) to be connected to a front of the first actuating part (201), and wherein when the first actuating part (201) is actuated, the second end is moved to the front of the base (200), thereby allowing the anchor (100) to be moved downwards. [3] Anchor pretensioner module according to claim 1, wherein a cylinder (203) connected in such a way that it is slidable back and forth is provided at the rear of an upper section of the base (200), and the first wire (300) is inserted through the cylinder (203) into the base (200) and is moved forward together with the cylinder (203) when the second actuating part (202) is actuated. [4] Anchor pretensioner module according to claim 3, wherein the first actuating part (201) and the second actuating part (202) are provided on a lower section of the base (200), and wherein the first end of the second wire (400) is connected to the cylinder (203) and extends to the front of the base (200) to be bent at the front of the base (200), and then the second end of the second wire (400) is connected behind the second actuating part (202), and its second end is moved to the rear of the base (200) when the second actuating part (202) is actuated to move the cylinder (203), thereby enabling the armature (100) to be moved forward while being moved downward. [5] Anchor pretensioner module according to claim 1, further comprising: a control unit (500) that detects an inclination angle of the seat in order to determine that the seat is in a normal position when the inclination angle is a certain angle or less, and to determine that the seat is in a relaxation position when the inclination angle is a certain angle or more, and which controls the first actuating part (201) to operate when the collision occurs in the normal position, and controls the second actuating part (202) to operate when the collision occurs in the relaxation position. [6] Anchor pretensioner module according to claim 5, wherein the first actuating part (201) is actuated when the collision occurs in the normal position, so that the anchor (100) is moved downwards with respect to the seat, and the second actuating part (202) is actuated when the collision occurs in the relaxed position, so that the anchor (100) is moved forwards and downwards with respect to the seat. [7] Anchor pretensioner module according to claim 1, wherein the base (200) consists of an upper tube (210) arranged on an upper section of the base (200) and a lower tube (220) connected to the upper tube (210) and arranged parallel to the upper tube (210) below the upper tube (210), wherein the first actuating part (201) is provided on a rear side of the lower tube (220), and the second actuating part (202) is provided on a front side of the lower tube (220), and wherein a cylinder (203) is provided on a rear side of the upper tube (210) in order to be connected and to be displaceable forwards. [8] Anchor pretensioner module according to claim 7, wherein a first end of the first wire (300) is connected to the anchor (100) so that it extends vertically through the cylinder (203) and is inserted into the rear of the lower tube (220), and then a second end of the first wire (300) is connected to the front of the first actuating part (201), and a first end of the second wire (400) is connected to the cylinder (203), and a second end of the second wire (400) is connected to the front of the second actuating part (202) through the fronts of the upper tube (210) and the lower tube (220). [9] Anchor pretensioner module according to claim 7, wherein the base (200) comprises: a front cartridge (230) covering the front of the base (200) and embedded with the second actuating part (202) on a lower side of the base (200), and a rear cartridge (240) covering the rear of the base (200) and embedded with the first actuating part (201) on a lower side of the base (200). [10] Anchor pretensioner module according to claim 1, wherein clamps (600) are provided at a second end of the first wire (300) and at a second end of the second wire (400) to allow the first wire (300) to be moved forward when the first actuating part (201) is actuated, and to allow the second wire (400) to be inserted into the base (200) when the second actuating part (202) is actuated. [11] Anchor pretensioner module according to claim 10, wherein the terminals (600) each comprise: a plurality of balls (601) which are discharged when the first actuating part (201) or the second actuating part (202) is actuated to fix the first wire (300) or the second wire (400) so that they are not moved in a reverse direction after the occurrence of the collision. [12] Anchor pretensioner module according to claim 1, wherein the first actuating part (201) and the second actuating part (202) are micro gas generators. [13] Anchor pretensioner module according to claim 1, wherein the first actuating part (201) is provided in the center of a lower end of the base (200), wherein the ends of the first wire (300) and the second wire (400) are connected adjacent to the first actuating part (201), and the anchor pretensioner module includes: a gas line (700) which is a flow path through which gas is delivered from the first actuating part (201), consisting of a first line (710) connected to a rear side of the end of the first wire (300) and a second line (720) connected to a rear side of the end of the second wire (400), and comprising: a valve (730) which blocks a fluid flow to control a gas delivery path. [14] Anchor pretensioner module according to claim 13, further comprising: a control unit (500) that detects an inclination angle of a seat in order to determine that the seat is in a normal position when the inclination angle is a certain angle or less, and to determine that the seat is in a relaxed position when the inclination angle is a certain angle or more, and that controls the valve (730) so that the gas can flow behind the end of the first wire (300) through the first line (710) when the collision takes place in the normal position, and that the gas can flow behind the end of the second wire (400) through the second line (720) when the collision takes place in the relaxed position.

Citation Information

Patent Citations

  • Vehicle safety belt device

    DE102018120610A1