Anchorage pretensioner module for a seat belt

Abstract

The present invention relates to an anchoring pre-tensioner module for a seat belt, which comprises: an anchor arranged on one side of a seat cushion, and a tongue of the seat belt is fastened to the anchor; a base disposed under the anchor, the base having a first operating portion for generating explosion pressure provided at the rear of the base and a second operating portion for generating explosion pressure provided at the front of the base; a first cable connected to the base and the anchor, and when the first operating portion is operated, enabling the anchor to move downward; and a second cable disposed on the base, and when the second operating portion is operated, moving the first cable while being inserted into the base, so that the anchor can move forward while moving downward, such that when a collision occurs, the relative position of the anchor moves to restrain the body of an occupant.

Description

Technical Field

[0001] The present invention relates to an anchoring pretensioner module for a seat belt, which restrains an occupant of a vehicle by moving the position of an anchor based on the reclining angle of a seat when an accident (e.g., a collision with one or more other vehicles and / or objects) occurs. Background Art

[0002] As vehicle technology continues to develop, the environments in which collisions may occur are also changing. Therefore, research and development of devices for protecting occupants from various accidents that may occur while driving a vehicle have become increasingly important. A seat belt is very important as a device that mainly protects occupants in an accident.

[0003] A seat belt is a device that safely protects an occupant when an accident (e.g., a collision with one or more vehicles and / or objects) occurs, and the seat belt should not be released unless unlocked by the operation of the occupant. A seat belt generally includes a webbing, a retractor, an anchor, a pretensioner, and a buckle.

[0004] A pretensioner is used to detonate built-in gunpowder before operating an airbag to retract the webbing of the seat belt, thereby fixing the occupant to the seat to maintain a proper posture. An anchoring pretensioner is a device that is installed on a seat or a vehicle body to pull the webbing of the seat belt to restrain the lower limbs (e.g., the pelvic part of the occupant). The anchoring pretensioner can be fixed to the seat belt to more effectively restrain the occupant's body.

[0005] Meanwhile, when a collision occurs, a submarining phenomenon may occur, which means that even if the occupant is wearing a seat belt, the body is pushed downward from the seat belt. Due to the submarining phenomenon, injuries may occur, such as the occupant's abdomen being caught by the webbing.

[0006] To prevent the submarining phenomenon, an inventive device having a function of changing the intersection angle of an anchoring pretensioner when a collision occurs has been developed. In the case of an autonomous vehicle, the arrangement and posture of the seat may be very diverse, but if the seat is tilted at a large angle, it is not enough to protect the occupant only by using an existing anchoring pretensioner. If the seat is tilted at a large angle, even if an anchoring pretensioner is applied, the restraint force on the lower body is insufficient, so the submarining phenomenon occurs, increasing the possibility of injury to the occupant.

[0007] The above content explained as the background is only intended to help understand the background art of the present invention and is not intended that the present invention falls within the scope of the prior art known to those skilled in the art. Summary of the Invention

[0008] This valve provides an anchor pretensioner module that can determine the occupant's posture based on the tilt angle of the vehicle seat and is configured to move based on the occupant's posture, so as to fully restrain the occupant's body even in the event of an accident in a relaxed posture.

[0009] An anchor pretensioner module for a seat belt according to the present invention may include: an anchor arranged on one side of the seat cushion, and the tongue of the seat belt is fastened to the anchor; a base provided under the anchor, the base having a first operating portion for generating explosion pressure provided at the rear of the base and a second operating portion for generating explosion pressure provided at the front of the base; a first cable connected to the base and the anchor, and when the first operating portion is operated, enabling the anchor to move downward; and a second cable provided on the base, and when the second operating portion is operated, moving the first cable while inserting into the base, so that the anchor can move forward while moving downward.

[0010] The first cable may have a first end and a second end, the first end is connected to the anchor, the second end is inserted into the base from the rear of the base to be connected to the front of the first operating portion, and when the first operating portion is operated, the second end may move forward to the front of the base, so that the anchor moves downward.

[0011] A cylinder capable of reciprocating sliding may be provided at the rear of the upper part of the base, the first cable may pass through the cylinder and be inserted into the base, and move forward together with the cylinder when the second operating portion is operated.

[0012] The first operating portion and the second operating portion may be provided on the lower part of the base, the first end of the second cable may be connected to the cylinder and extend to the front of the base, bend at the front of the base, and then the second end of the second cable may be connected behind the position of the second operating portion. When the second operating portion is operated to slide the cylinder, the second end of the second cable may move backward to the base, so that the anchor can move forward while moving downward.

[0013] The anchor pretensioner module may further include: a control unit that senses the tilt angle of the seat, determines that the seat is in a normal posture if the tilt angle is a specific angle or smaller; determines that the seat is in a relaxed posture if the tilt angle is a specific angle or larger, and controls the first operating portion to operate when a collision occurs in the normal posture, and controls the second operating portion to operate when a collision occurs in the relaxed posture.

[0014] When a collision occurs in the normal posture, the first operating part can be operated so that the relative position of the anchor with respect to the seat can move downward; when a collision occurs in the relaxed posture, the second operating part can be operated so that the relative position of the anchor with respect to the seat can move forward and downward.

[0015] In addition, the base is composed of an upper tube and a lower tube. The upper tube is positioned at the upper part of the base. The lower tube is connected to the upper tube and is positioned parallel to the upper tube below the upper tube. The first operating part can be arranged at the rear part of the lower tube, and the second operating part can be arranged at the front part of the lower tube; and the cylinder can be arranged at the rear part of the upper tube to be connected so as to be slidable forward.

[0016] The first end of the first cable can be connected to the anchor so as to extend vertically through the cylinder and then inserted into the rear part of the lower tube. Then, the second end of the first cable can be connected to the front part of the first operating part, and the first end of the second cable can be connected to the cylinder through the front parts of the upper tube and the lower tube, and the second end of the second cable can be connected to the front part of the second operating part through the front parts of the upper tube and the lower tube.

[0017] The base may include: a front sleeve that covers the front part of the base and embeds the second operating part on the lower side of the base; and a rear sleeve that covers the rear part of the base and embeds the first operating part on the lower side of the base.

[0018] Clamps can be arranged at the second ends of the first cable and the second cable so that the first cable can move forward when the first operating part is operated, and the second cable can be inserted into the base when the second operating part is operated.

[0019] In addition, the clamp may include: a plurality of spheres that are discharged when the first operating part or the second cable is operated to fix the first cable or the second cable so that they will not move in the opposite direction after a collision.

[0020] The first operating part and the second operating part are micro gas generators.

[0021] In addition, the first operating part can be arranged at the center of the lower end of the base;

[0022] The ends of the first cable and the second cable are adjacently connected to the first operating part; and the anchor pre-tensioner module may include: a gas pipeline, which is a flow path for the gas discharged from the first operating part. The gas pipeline is composed of a first pipeline and a second pipeline. The first pipeline is connected to the rear of the end of the first cable, and the second pipeline is connected to the rear of the end of the second cable. And the gas pipeline includes: a valve that blocks the flow of the fluid to control the discharge path of the gas.

[0023] The described anchoring pre-tensioner module may further include: a control unit that senses the tilt angle of the seat, determines that the seat is in a normal posture if the tilt angle is equal to or less than a specific angle, determines that the seat is in a relaxed posture if the tilt angle is equal to or greater than the specific angle, and controls a valve such that when a collision occurs in the normal posture, gas can flow through a first pipeline to the rear of the end of the first pipeline, and when a collision occurs in the relaxed posture, gas can flow through a second pipeline to the rear of the end of the second cable.

[0024] According to the anchoring pre-tensioner module of the present invention, even when a collision occurs in a relaxed posture and a normal posture, the anchoring pre-tensioner module can move based on the posture of the occupant to effectively restrain the body of the occupant, thereby preventing the submarining phenomenon.

[0025] In addition, due to the simple structure, the anchoring pre-tensioner module can be easily manufactured and assembled, and can be operated after a collision and thus easily replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other objects, features, and other advantages of the present invention will be more clearly understood from the following detailed description presented in conjunction with the accompanying drawings, in which:

[0027] Figure 1 FIG. is a perspective view showing an anchoring pre-tensioner module according to an exemplary embodiment of the present invention.

[0028] Figure 2 FIG. is a cross-sectional view showing an anchoring pre-tensioner module according to an exemplary embodiment of the present invention.

[0029] Figure 3 and Figure 4 FIG. is a schematic view showing a change in the position of an anchor when a first operation part of an anchoring pre-tensioner module according to an exemplary embodiment of the present invention is operated.

[0030] Figure 5 and Figure 6 FIG. is a schematic view showing a change in the position of an anchor when a second operation of an anchoring pre-tensioner module according to an exemplary embodiment of the present invention is performed.

[0031] Figure 7 and Figure 8 FIG. is a schematic view showing a state of fixing a cable of an anchoring pre-tensioner module according to an exemplary embodiment of the present invention.

[0032] Figure 9 FIG. is a cross-sectional view of an anchoring pre-tensioner module according to another exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0033] It should be understood that the term "vehicle" or "vehicular" or other similar terms used herein generally include motor vehicles, such as passenger cars including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles, vessels including various boats and ships, aircraft, etc., and include hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., fuels derived from non-fossil energy sources). As mentioned herein, a hybrid vehicle is a vehicle having two or more power sources, such as a vehicle having both gasoline power and electric power.

[0034] The terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the present invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should be further understood that when the terms "comprises" and / or "comprising" are used in this specification, it indicates the presence of the stated features, integers, steps, operations, elements, and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. As described herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. Throughout this specification, unless expressly stated to the contrary, the term "comprises" and variations such as "comprising" or "includes" shall be understood to imply the inclusion of the stated element but not the exclusion of any other element. In addition, the terms "unit", "device", "component" and "module" described in the specification mean a unit for performing at least one function and operation, and can be implemented by hardware components or software components and combinations thereof.

[0035] In addition, the control logic of the present application can be implemented as a non-transitory computer-readable medium on a computer-readable medium, which contains executable program instructions executed by a processor, a controller, etc. Examples of computer-readable media include, but are not limited to, ROM, RAM, compact disc (CD)-ROM, magnetic tape, floppy disk, flash drive, smart card, and optical data storage devices. The computer-readable medium can also be distributed over network-connected computer systems so that the computer-readable medium is stored and executed in a distributed manner, such as by a telematics server or a Controller Area Network (CAN).

[0036] The specific structures shown in the functional descriptions of the exemplary embodiments of the present aspect disclosed in this specification or application are for the purpose of describing the exemplary embodiments only according to the present invention, and the exemplary embodiments according to the present invention can be implemented in various forms and should not be construed as limiting the present invention to the exemplary embodiments described in this specification or application.

[0037] Since various changes and various forms can be made according to the exemplary embodiments of the present invention, specific exemplary embodiments will be shown in the drawings and described in detail in this specification or application. However, this is not intended to limit the exemplary embodiments according to the concepts of the present invention to a specific disclosed form, and it should be understood that the present invention includes all changes, equivalent forms, and alternative forms within the spirit and scope of the present invention.

[0038] Terms such as first and / or second may be used to describe various components, but these components should not be limited by these terms. These terms are only used to distinguish one component from another. For example, without departing from the scope of the concepts according to the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

[0039] When a component is referred to as "connected" or "coupled" to another component, the component may be directly connected or coupled to another component, but it should be understood that there may also be other components between these components. On the other hand, when a component is referred to as "directly connected" or "directly coupled" to another component, it should be understood that there are no other components between these components. Other expressions describing the relationship between components should be interpreted in the same way, that is, "between" and "immediately between" or "near" and "directly adjacent to".

[0040] The present invention will be described in detail by referring to the preferred exemplary embodiments of the present invention. The same reference numerals in each drawing represent the same components.

[0041] The pretensioner is a component of the seat belt and is used to detonate the embedded gunpowder during a collision to retract the webbing of the seat belt, thereby fixing the occupant to the seat to maintain a correct posture. The occupant can be protected by the operation of the pretensioner. However, as described above, if the seat is reclined at a specific angle or a larger angle, the diving phenomenon may occur even if the pretensioner operates.

[0042] The present invention relates to an anchoring pretensioner. When the seat is in a normal posture, the first operation part 201 can be operated, and when the seat is in a relaxed posture, the second operation part 202 can be operated. Therefore, based on the posture of the occupant, the first operation part 201 and / or the second operation part 202 are operated, so as to effectively protect the occupant during a collision.

[0043] Figure 1 Is a perspective view of an anchoring pretensioner module according to an exemplary embodiment of the present invention, Figure 2 Is a cross-sectional view of an anchoring pretensioner module according to an exemplary embodiment of the present invention. Refer to Figure 1 And Figure 2, an anchoring pre-tensioner module according to an exemplary embodiment of the present invention may be composed of an anchor 100, a base 200, a first cable 300, and a second cable 400.

[0044] The anchor 100 is a device for fastening and fixing the tongue of the seat belt. The anchor 100 may be disposed on the side of the seat cushion.

[0045] The base 200 may be disposed below the anchor 100. The anchor 100 and the base 200 may be connected by a first cable 300 extending downward from the anchor 100. The base 200 may be disposed on the side of the seat.

[0046] The base 200 may be provided with a first operation part 201 and a second operation part 202 for generating explosion pressure. The first operation part 201 and the second operation part 202 may be microgas generators (MGGs) that supply high-pressure gas during a collision. The first operation part 201 may be disposed at the rear of the base 200, and the second operation part 202 may be disposed at the front of the base 200. That is, the second operation part 202 may be disposed at a position spaced forward from the position of the first operation part 201.

[0047] The cylinder 203 may be disposed at the rear of the upper part of the base 200. The cylinder 203 may be connected to the upper part of the base 200 so as to be able to reciprocate.

[0048] The first cable 300 may be connected to the anchor 100 and the base 200, and the second cable 400 may be disposed inside the base 200. When a collision occurs, the relative position of the anchor 100 with respect to the seat is changed through the first cable 300 and the second cable 400.

[0049] Figure 3 and Figure 4 is a schematic diagram showing the change in the position of the anchor 100 when the first operation part 201 of the anchoring pre-tensioner module according to an exemplary embodiment of the present invention is operated.

[0050] Reference Figure 3 and Figure 4 , the first cable 300 may be connected to the base 200 and the anchor 100. Specifically, the first end of the first cable 300 may be connected to the anchor 100, and the second end of the first cable 300 may be inserted into the interior of the base 200 from the rear of the base 200. The second end of the first cable 300 may be connected to the front of the position of the first operation part 201. When the first operation part 201 operates, the second end of the first cable 300 moves toward the front of the base 200, and pulls the first end of the first cable 300, so that the anchor 100 can move downward.

[0051] Figure 5 and Figure 6 A schematic diagram showing the change in the position of the anchor 100 when the second operation part of the anchor pre-tightening module according to an exemplary embodiment of the present invention is operated.

[0052] The second cable 400 may be disposed inside the base 200. The first end of the second cable 400 may be connected to the cylinder 203. Since the cylinder 203 is disposed at the rear of the upper part of the base 200, the first end of the second cable 400 is connected to the base 200 at the rear of the upper part of the base 200. The second cable 400 may extend to the front of the base 200, bend at the front of the base 200, and then the second end of the second cable 400 may be connected behind the position of the second operation part 202. That is, the first end of the second cable 400 may be located at the rear of the upper part of the base 200, the second end of the second cable 400 may be located at the rear of the lower part of the base 200, and the middle point may be formed in a shape that bends at the front of the base 200.

[0053] When the second operation part 202 is operated, the second end of the second cable 400 moves toward the rear of the base 200, and the first end of the second cable 400 moves toward the front of the base 200. The cylinder 203 connected to the first end of the second cable 400 slides forward, and since the first cable 300 passes through the cylinder 203, the first cable 300 moves downward while moving forward. Therefore, the anchor 100 moves forward and downward.

[0054] The first cable 300 may be inserted into the base 200 through the cylinder 203 at the lower surface of the anchor 100. Therefore, when the cylinder 203 slides forward, the position of the anchor 100 may move forward, and the first cable 300 also moves forward together.

[0055] In addition, as Figure 1 and Figure 2 shown, the anchor pre-tightening module according to an exemplary embodiment of the present invention may further include a control unit 500. The control unit 500 may sense the tilt angle of the seat, so as to determine that the seat is in a normal posture when the tilt angle is a specific angle or a smaller angle, and determine that the seat is in a relaxed posture when the tilt angle is a specific angle or a larger angle.

[0056] If the control unit 500 determines that the seat is in a normal posture, the control unit 500 can control the first operation unit 201 to operate when a collision occurs. If the control unit 500 determines that the seat is in a relaxed posture, the second operation unit 202 is controlled to operate when a collision occurs. Therefore, when a collision occurs in the normal posture, the relative position of the anchor 100 with respect to the seat moves downward through the first operation unit 201. In addition, when a collision occurs in the relaxed posture, the relative position of the anchor 100 with respect to the seat moves forward and downward through the operation of the second operation unit 202.

[0057] Meanwhile, referring to Figures 1 to 6 , the base 200 may be composed of an upper tube 210 and a lower tube 220. The upper part of the base 200 may be formed by the upper tube 210, and the lower tube 220 may be parallel to the upper tube 210 and positioned below the upper tube 210. The first operation unit 201 may be provided at the rear of the lower tube 220, and the second operation unit 202 may be provided at the front of the lower tube 220. The front parts of the upper tube 210 and the lower tube 220 may be connected to each other, and their interiors may communicate with each other. The cylinder 203 may be provided at the rear of the upper tube 210 to be connected so as to be able to slide forward.

[0058] When the base 200 is composed of the upper tube 210 and the lower tube 220, the first end of the first cable 300 may be connected to the anchor 100, extend vertically through the cylinder 203 and be inserted into the rear of the lower tube 220, and then the second end of the first cable 300 may be connected to the front of the position of the first operation unit 201. The first end of the second cable 400 may be connected to the cylinder 203, and the second end of the second cable 400 may be connected to the front of the position of the second operation unit 202 through the front parts of the upper tube 210 and the lower tube 220.

[0059] In addition, the base 200 may include a front sleeve 230 covering the front part and a rear sleeve 240 covering the rear part. The second operation unit 202 may be embedded in the lower side of the front sleeve 230, and the first operation unit 201 may be embedded in the lower side of the rear sleeve 240. The front sleeve 230 and the rear sleeve 240 may protect the base 200 to prevent the first cable 300 and the second cable 400 from being externally interfered. In addition, since the front sleeve 230 and the rear sleeve 240 can be easily separated and replaced when a collision occurs, and the front sleeve 230 and the rear sleeve 240 are replaced after the operation, it has the advantage of being easy to replace.

[0060] Figure 7 and Figure 8 is a schematic diagram showing the state of fixing the cables of the anchor pre-tensioner module according to an exemplary embodiment of the present invention.

[0061] Referring to Figure 7 and Figure 8, according to an exemplary embodiment of the present invention, the fixture 600 can be disposed at the other ends of the first cable 300 and the second cable 400. When the first operating portion 201 is operated, the first cable 300 can move forward through the fixture 600. When the second operating portion 202 is operated, the second cable 400 can be inserted into the base 200 through the fixture 600. Through the selective operation of the first operating portion 201 and the second operating portion 202 by the fixture 600, the behavior of the anchor 100 can be stably achieved.

[0062] A plurality of spheres 601 can be provided in the fixture 600. When the first operating portion 201 or the second operating portion 202 is operated, the plurality of spheres 601 are separated from the fixture 600 to prevent the first cable 300 or the second cable 400 from moving in the opposite direction. That is, the spheres 601 can achieve the function of fixing the cable. When a collision occurs, the occupant loses his / her balance and is supported by the webbing, thereby transferring the weight of the occupant to the webbing. Since the cable may move in the opposite direction by the weight transmitted to the webbing, the spheres 601 are separated from the fixture 600 to fix the cable so that it does not move in the opposite direction.

[0063] Figure 9 A cross-sectional view of an anchor pretensioner module according to another exemplary embodiment of the present invention.

[0064] Reference Figure 9 , according to another exemplary embodiment of the present invention, the anchor pretensioner module is provided with an operating portion, for example, the first operating portion 201 at the center of the lower end of the base 200, and the ends of the first cable 300 and the second cable 400 can be adjacently connected to the operating portion. In addition, the anchor pretensioner module can further include a gas pipeline 700, which is a flow path for the gas discharged from the operating portion.

[0065] The gas pipeline 700 is a flow path for the gas discharged from the operating portion and can be composed of a first pipeline 710 and a second pipeline 720. The first pipeline 710 is connected to the rear of the first cable 300, and the second pipeline 720 is connected to the rear of the second cable 400. The gas pipeline 700 can be provided with a valve 730, and the valve 730 can block the flow of the fluid. As Figure 9 shown, the valve 730 can also be provided on one of the first pipeline 710 or the second pipeline 720, and can also be provided on both the first pipeline 710 and the second pipeline 720.

[0066] The control unit 500 of the pretensioner module according to another exemplary embodiment of the present invention may control the valve 730. When a collision occurs in the normal posture, the control unit 500 may control the gas to flow through the first pipeline 710 to the rear of the end of the first cable 300, so that the first cable 300 moves to the front of the base 200. Accordingly, the anchor 100 may move downward.

[0067] In addition, when a collision occurs in the relaxed posture, the control unit 500 may control the gas to flow through the second pipeline 720 to the rear of the end of the second cable 400, so that the second cable 400 moves to the rear of the base 200. Accordingly, the anchor 100 may move downward and forward.

[0068] In many cases, the sitting posture of the occupant is usually the normal posture. However, when taking a convenient rest, the occupant may tilt the seat to adopt a relaxed posture in some cases. Specifically, in the case of an autonomous vehicle, since the situation of the occupant interfering with the driving operation is reduced, it is expected that in many cases the occupant will tilt the seat to sit in the vehicle so as to rest comfortably.

[0069] When the seat is tilted at a specific angle or a larger angle, the restraint force on the lower body is insufficient. Therefore, the submarining phenomenon may occur when a collision occurs. If the submarining phenomenon occurs, even the occupant wearing the seat belt may be seriously injured. Specifically, since the seat back lies flat in the relaxed posture, the force pushing forward when a collision occurs increases. Therefore, since the possibility of the submarining phenomenon increases, it is necessary to increase the restraint force in the relaxed posture.

[0070] In the case of the anchor pretensioner module according to the present invention, when a collision occurs in the normal posture, the position of the anchor 100 may move downward to increase the restraint force on the lower limbs. In particular, in the case of the relaxed posture, the position of the anchor 100 moves downward and forward at the same time, thereby preventing the phenomenon that the occupant is pushed forward. By increasing the restraint force on the occupant according to the change in the position of the anchor 100, the injury can be minimized. When the anchor 100 moves forward in the relaxed posture, the restraint force for the webbing to bind the pelvis of the occupant increases.

[0071] Although specific exemplary embodiments of the present invention have been illustrated and described, it will be apparent to those skilled in the art that various modifications and changes can be made to the present invention without departing from the technical spirit of the present invention provided by the appended claims.

Claims

1. An anchoring pre-tensioner module for a seat belt, comprising: An anchor arranged on one side of a seat cushion, and a tongue of the seat belt is fastened to the anchor; A base provided under the anchor, the base having a first operating part for generating explosive pressure provided at the rear of the base and a second operating part for generating explosive pressure provided at the front of the base; A first cable connected to the base and the anchor, and when the first operating part is operated, enabling the anchor to move downward; And A second cable provided on the base, and when the second operating part is operated, moving the first cable while being inserted into the base, so that the anchor can move forward while moving downward; Wherein, when a collision occurs, the relative position of the anchor with respect to the seat moves to restrain the body of an occupant.

2. The anchoring pre-tensioner module for a seat belt according to claim 1, wherein, The first cable has a first end and a second end, the first end is connected to the anchor, and the second end is inserted into the base from the rear of the base to be connected to the front of the first operating part. When the first operating part is operated, the second end moves forward towards the front of the base, thereby causing the anchor to move downward.

3. The anchoring pre-tensioner module for a seat belt according to claim 1, wherein, A cylinder is provided at the rear of the upper part of the base and can reciprocate, the first cable passes through the cylinder and is inserted into the base, and moves forward together with the cylinder when the second operating part is operated.

4. The anchoring pre-tensioner module for a seat belt according to claim 3, wherein, The first operating part and the second operating part are provided at the lower part of the base; The first end of the second cable is connected to the cylinder and extends to the front of the base, bends at the front of the base, and then the second end of the second cable is connected behind the position of the second operating part. When the second operating part is operated to slide the cylinder, the second end of the second cable moves backward towards the rear of the base, so that the anchor can move forward while moving downward.

5. The anchoring pre-tensioner module for a seat belt according to claim 1, further comprising: A control unit that senses the tilt angle of the seat, and if the tilt angle is a specific angle or a smaller angle, determines that the seat is in a normal posture; If the tilt angle is a specific angle or a larger angle, determines that the seat is in a relaxed posture, and controls the first operating part to operate when a collision occurs in the normal posture, and controls the second operating part to operate when a collision occurs in the relaxed posture.

6. The anchoring pre-tensioner module for a seat belt according to claim 5, wherein, When a collision occurs in the normal posture, the first operating part is operated so that the relative position of the anchor with respect to the seat moves downward; when a collision occurs in the relaxed posture, the second operating part is operated so that the relative position of the anchor with respect to the seat moves forward and downward.

7. The anchoring pre-tensioner module for a seat belt according to claim 1, wherein, The base is composed of an upper tube and a lower tube. The upper tube is positioned at the upper part of the base. The lower tube is connected to the upper tube and is positioned below and parallel to the upper tube. A first operating part is arranged at the rear part of the lower tube, and a second operating part is arranged at the front part of the lower tube. The cylinder barrel is arranged at the rear part of the upper tube and is connected so as to be able to slide forward.

8. The anchorage pretensioner module for a seat belt according to claim 7, wherein, The first end of the first cable is connected to the anchor and extends vertically through the cylinder barrel and then is inserted into the rear part of the lower tube. Then the second end of the first cable is connected to the front part of the first operating part, and the first end of the second cable is connected to the cylinder barrel through the front parts of the upper tube and the lower tube, and the second end of the second cable is connected to the front part of the second operating part through the front parts of the upper tube and the lower tube.

9. The anchorage pretensioner module for a seat belt according to claim 7, wherein, The base includes: a front sleeve which covers the front part of the base and embeds the second operating part at the lower side of the base; and a rear sleeve which covers the rear part of the base and embeds the first operating part at the lower side of the base.

10. The anchorage pretensioner module for a seat belt according to claim 1, wherein, Clamps are arranged at the second ends of the first cable and the second cable to enable the first cable to move forward when the first operating part is operated and enable the second cable to be inserted into the base when the second operating part is operated.

11. The anchorage pretensioner module for a seat belt according to claim 10, wherein, The clamp includes: a plurality of spheres which are discharged when the first operating part or the second operating part is operated to fix the first cable or the second cable so as not to move in the opposite direction after a collision.

12. The anchorage pretensioner module for a seat belt according to claim 1, wherein, The first operating part and the second operating part are micro gas generators.

13. The anchorage pretensioner module for a seat belt according to claim 1, wherein, The first operating part is arranged at the center of the lower end of the base; The ends of the first cable and the second cable are adjacently connected to the first operating part; The anchorage pretensioner module includes: A gas pipeline which is a flow path for the gas discharged from the first operating part. The gas pipeline is composed of a first pipeline and a second pipeline. The first pipeline is connected to the rear part of the end of the first cable, and the second pipeline is connected to the rear part of the end of the second cable. And the gas pipeline includes: a valve which blocks the flow of the fluid to control the discharge path of the gas.

14. The anchorage pretensioner module for a seat belt according to claim 13, which further includes: A control unit that senses the tilt angle of the seat, determines that the seat is in a normal posture if the tilt angle is equal to or less than a specific angle, determines that the seat is in a relaxed posture if the tilt angle is equal to or greater than the specific angle, and controls a valve so that when a collision occurs in the normal posture, gas can flow through a first pipeline to the rear of the end of the first pipeline, and when a collision occurs in the relaxed posture, gas can flow through a second pipeline to the rear of the end of the second cable.

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