Seat belt retractor

Abstract

The present invention relates to a seat belt retractor that includes a spindle module including a seat belt webbing and a spindle on which the seat belt webbing is wound, and a front bracket and a rear bracket that are coupled to the front and rear sides of the spindle module, respectively, wherein the front bracket and the rear bracket have a first flange portion and a second flange portion formed at both ends of the front bracket and the rear bracket, and are fixed to the seat back frame in an overlapping state, thereby being able to restrain and safely protect the occupant in the event of a vehicle emergency, and which allows for various adjustments of the insertion and withdrawal angles of the seat belt webbing.

Description

[[TECHNICAL FIELD]]

[0001] The present disclosure relates to a seat belt retractor, and more particularly, to a seat belt retractor that prevents withdrawal of seat belt webbing in an emergency situation such as a vehicle collision during driving of the vehicle. [[BACKGROUND ART]]

[0002] Generally, in a vehicle, a seat belt device is mounted on a seat to ensure the safety of an occupant.

[0003] This seat belt device includes a seat belt retractor that operates to allow a belt-shaped seat belt webbing (hereinafter referred to as "webbing") for restraining an occupant when the webbing is wound onto a spool or drawn out from the spool, and a buckle into which a tongue fixed to one end of the webbing is detachably inserted.

[0004] When a vehicle suddenly stops or suddenly accelerates due to a vehicle accident, the seat belt retractor prevents an occupant wearing the seat belt from moving forward or moving away from the seat due to driving inertia. Such a seat belt retractor may include an emergency tensioning device and a pretensioning device that allow the webbing to be pulled out in a normal state when the occupant fastens the seat belt. However, when a change in the withdrawal acceleration of the webbing caused by a vehicle collision or an inclination of the vehicle is detected, further withdrawal of the webbing is prevented, and slack or sag of the webbing, that is, slack of the webbing, is suppressed.

[0005] For example, the following Patent Document 1 and Patent Document 2 disclose a seat belt retractor technology for controlling the retracting operation and the withdrawing operation of seat belt webbing.

[0006] Such seat belt retractors can be mounted on the vehicle body, for example, on the center pillar, seat back, or rear pillar. Therefore, the mounting position of the seat belt retractor can vary depending on the structure of the center pillar, seat back, or rear pillar. In other words, the seat belt retractor is not necessarily mounted horizontally, but can be mounted at a predetermined angle from the horizontal in the left-right or front-back direction.

[0007] Recently, seats installed in vehicles are being manufactured to be slim by designing the thickness of the backrest in the front-to-back direction (hereinafter referred to as "thickness") to be thin. Such slim seats can be fitted with an integrated seat belt (Belt In Seat (BIS)) system.

[0008] In particular, seats applied to autonomous vehicles are designed to rotate left and right, and the backrest can be rotated backward by up to 180°.

[0009] By the way, in conventional seat belt retractors, the direction in which the webbing is extended is fixed when it is attached to the mounting object, that is, the seat back or the vehicle body.

[0010] Conventional integrated seat belt systems manufacture the driver's seat belt retractor and the passenger seat belt retractor separately, and install them so that the webbing can be pulled out symmetrically at the vehicle's seat installation position, i.e., on the driver's side and passenger's side.

[0011] Therefore, conventional integrated seat belt systems have problems such as increased manufacturing costs due to the increased number of parts in the seat belt retractor, difficulty in managing parts, and the possibility of assembly errors by workers.

[0012] Furthermore, in order to maximize the interior space of the vehicle, it is necessary to develop seat belt retractor technology that is firmly attached to the slim seat and enables smooth operation. [Prior art documents] [Patent Documents]

[0013] [Patent Document 1] U.S. Patent No. 6,499,554 (Registered December 31, 2002) [Patent Document 2] U.S. Patent No. 6,443,382 (Registered September 3, 2002) [Overview of the project] [Problems that the invention aims to solve]

[0014] This disclosure is made to solve the problems described above and aims to provide a seat belt retractor that restrains and safely protects occupants in emergency situations of a vehicle, while also allowing for diverse adjustment of the retraction and extension angles of the seat belt webbing.

[0015] Furthermore, this disclosure also aims to provide a seat belt retractor that can be applied to both the driver's side and the passenger's side, regardless of the position of the seat on which the seat belt retractor is attached in the vehicle.

[0016] Another object of this disclosure is to provide a seat belt retractor that can operate smoothly when installed in a seat, is applicable to slim seats, and is easy to install with a headrest. [Means for solving the problem]

[0017] To achieve the above objective, the seat belt retractor according to this disclosure may include a spindle module including a seat belt webbing and a spindle on which the seat belt webbing is wound, and a front bracket and a rear bracket coupled to the front and rear sides of the spindle module, respectively, wherein a first flange and a second flange may be formed at both ends of the front bracket and the rear bracket in an overlapping manner so as to be fixed to the backrest frame of a seat.

[0018] Effects of the invention As described above, the seat belt retractor according to this disclosure has the effect of being able to restrain and safely protect occupants in emergency situations of the vehicle, and allows for diverse adjustment of the retraction and extension angles of the seat belt webbing.

[0019] According to this disclosure, by arranging other modules relative to the spindle, the amount (or load) and thickness of the seat belt webbing wound onto the spindle can be prevented from affecting the longitudinal width of the seat belt retractor on which the spindle is installed.

[0020] Therefore, this disclosure can be effectively applied to slim seats, as it allows the seat belt retractor to be installed in a narrow space by minimizing its width in the front-to-rear direction.

[0021] Furthermore, according to this disclosure, by forming a fixing groove in the backrest frame to fix the flange provided on the seat belt retractor, it is possible to prevent damage or breakage of the cover due to interference with the fixing member or flange during the process of installing the cover on the backrest while the seat belt retractor is attached to the backrest of the seat, and to ensure the flatness of the outer surface of the cover installed on the backrest.

[0022] Further, according to the present disclosure, the first flange and the second flange respectively formed on the front bracket and the rear bracket are fixed to the backrest frame in a state of overlapping each other, whereby the fixing force of the seat belt retractor can be improved and the seat belt retractor can be firmly fixed, so that vibration and movement of the seat belt retractor occurring during driving of the vehicle can be effectively prevented.

[0023] Further, according to the present disclosure, by penetrating and coupling the headrest pole to the backrest in a state where the seat belt retractor is fixed to the backrest, the fixing force of the seat belt retractor can be further improved, and workability during assembly can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] [Figure 1] FIG. 1 is a perspective view showing a state where a seat belt retractor according to a preferred embodiment of the present disclosure is installed on a seat. [Figure 2] FIG. 2 is a perspective view showing a connected state and a disconnected state of the backrest frame of the backrest shown in FIG. 1 and the seat belt retractor. [Figure 3] FIG. 3 is a perspective view showing a connected state and a disconnected state of the backrest frame of the backrest shown in FIG. 1 and the seat belt retractor. [Figure 4] FIG. 4 is a perspective view of the seat belt retractor shown in FIG. 3 viewed from a different angle. [Figure 5] FIG. 5 is a cross-sectional view taken along line A-A' of FIG. 4. MODE FOR CARRYING OUT THE INVENTION

[0025] Hereinafter, a seat belt retractor and a seat using the seat belt retractor according to a preferred embodiment of the present disclosure will be described in detail with reference to the accompanying drawings.

[0026] Hereafter, the direction from the vehicle's seat towards the steering wheel will be referred to as "forward (F)," and the opposite direction will be referred to as "rearward (B)." In addition, terms indicating direction such as "left side (L)," "right side (R)," "upward (U)," and "downward (D)" are defined to indicate their respective directions based on the forward direction (F) and rearward direction (B) described above.

[0027] This embodiment describes an integrated seat belt (Belt In Seat (BIS)) device incorporated into the seat backrest, but the disclosure is not limited thereto.

[0028] In other words, please note that this disclosure may be modified to be installed not only on the seat backrest, but also on pillars located on the side of the vehicle body, the rear vehicle body panel behind the seat, the roof or floor of the vehicle body, and other various locations on the vehicle body.

[0029] Referring to Figures 1 to 3, the configuration of a seat belt device using a seat belt retractor according to a preferred embodiment of this disclosure will be described in detail.

[0030] Figure 1 is a perspective view showing a seat belt retractor installed on a seat according to a preferred embodiment of the present disclosure, and Figures 2 and 3 are perspective views showing the connection and disconnection states of the seat belt retractor shown in Figure 1, respectively, between the backrest frame of the backrest and the backrest retractor shown in Figure 1.

[0031] As shown in Figures 1 to 3, the seat belt device 10 includes a strip-shaped seat belt webbing (hereinafter referred to as "webbing") 20 for securing the occupant, a seat belt retractor 30 attached to the backrest 12 of the seat 11 for winding up the webbing 20 as needed, a belt tongue 21 installed at the end of the extended webbing 20, and a buckle (not shown) into which the belt tongue 21 is detachably inserted.

[0032] The backrest 12 of the seat 11 may be provided with a mounting space 13 for attaching a seat belt retractor 30.

[0033] The mounting space 13 may be located inside the backrest 12, and a guide member 14 may be provided on one side of the mounting space 13 to guide the webbing 20 that is pulled out from the spindle module 31 to the outside of the backrest 12.

[0034] The mounting space 13 may be provided at the upper rear of the backrest 12. That is, the mounting space 13 is a space formed on the backrest frame 15 which is located inside the backrest, and the seat belt retractor 20 is placed in the mounting space 13 formed on the backrest frame 15 and can be firmly fixed to the backrest frame 15 using fixing members described later.

[0035] Naturally, this disclosure is not limited thereto. In Figure 1, the mounting space 13 is shown to be located approximately in the center of the upper end of the backrest 12. However, the mounting space 13 may be formed at a predetermined distance below the upper end of the backrest 12, or it may be formed off-center to the left or right of the center of the backrest 12.

[0036] Furthermore, the mounting space 13 may be provided at various locations on the vehicle body, such as the pillar behind the seat, the vehicle panel, the roof, or the floor.

[0037] In other words, although this embodiment illustrates an integrated seat belt device integrated with a slim seat, it should be made clear that this disclosure can be modified to be applicable to seat belt devices applied to ordinary seats and vehicle structures.

[0038] Incidentally, on one side of the mounting space 13, a fluid space can be formed so that the webbing 20 pulled out from the seat belt retractor 30 can be positioned toward the guide member 14.

[0039] The guide member 14 may be rotatably mounted on the upper end of one side of the backrest 12, for example, on the upper left side of the backrest frame 15 when a seat belt retractor is applied to the driver's seat 11. For this purpose, a mounting projection 16 may be provided on the upper left side of the backrest frame 15 to which the guide member 14 is attached.

[0040] Therefore, the guide member 14 can be rotatably mounted around a fixing bolt that is fixed to the mounting projection 16 of the backrest frame 15.

[0041] For example, the guide member 14 may include a fixing portion 141 having a through hole through which a fixing bolt passes, and a webbing pull-out portion 142 having a pull-out hole through which the webbing 20 can be pulled in or pulled out.

[0042] In other words, the guide member 14 may be provided as a plate-like member with a roughly triangular or roughly pentagonal shape, and the webbing pull-out portion 142 may be formed to be wider than the width of the webbing 20, so that the webbing 20 can be smoothly pulled out or pulled in from the pull-out hole.

[0043] Therefore, the webbing 20 rotates according to the occupant's physique, which can change the extension direction and extension angle.

[0044] A headrest 17 may be attached to the upper end of the backrest 12 to support the occupant's head. Below the headrest 17, a pair of headrest poles 18 may be provided, which are connected to the upper end of the backrest frame 15.

[0045] The headrest pole 18 can be attached to the backrest frame 15 by passing through the seat belt retractor 30, which is attached to the backrest frame 15, in the vertical direction. Here, the headrest pole 18 can be mounted on the backrest frame 15 so as to be vertically movable, so as to be able to adjust the height of the headrest 17 according to the occupant's body type and physical condition.

[0046] The configuration of the seat belt retractor according to the embodiment of this disclosure will be described in detail below with reference to Figures 2 to 5.

[0047] Figure 4 is a perspective view of the seat belt retractor shown in Figure 3 from a different angle, and Figure 5 is a cross-sectional view along the line A-A' in Figure 4.

[0048] As shown in Figures 2 to 5, the seat belt retractor 30 according to a preferred embodiment of the present disclosure is manufactured by modularizing the components applied to the seat belt retractor 30 according to functional blocks and selectively combining the modularized components.

[0049] Specifically, the seat belt retractor 30 may include a spindle module 31 from which the webbing 20 is wound, a sensor module 32 that senses changes in the vehicle's tilt and acceleration, and an emergency tension module 33 that winds up the webbing 20 to reduce slack in the event of a vehicle collision.

[0050] The seat belt retractor 30 may further include a pre-tension module 34 that smoothly extends the webbing 20 during normal vehicle operation and retracts the webbing 20 to reduce slack before a collision, and an additional function module.

[0051] In this embodiment, the seat belt retractor 30 can be assembled by modularizing the components applied to the seat belt retractor 30, namely the spindle module 31, sensor module 32, emergency tension module 33, pre-tension module 34, and additional function module, and selectively combining the modularized components.

[0052] The additional function module may further include one or more of the following: a load adjustment module 35 that adjusts the load applied to the webbing 20 according to occupant condition conditions, including occupant size and weight information; and a power transmission module 36 that mechanically connects each module and transmits the force generated by the driving of each module to the spindle module 31.

[0053] For example, the load adjustment module 35 may include a first limiter 42 that provides a relatively high level of load to the spindle 41 when the occupant seated in the seat is a relatively heavy adult, a second limiter 43 that provides a relatively low level of load to the spindle 41 when the occupant seated in the seat is a relatively light woman or child, and a switching unit 44 that switches to adjust the release load of the webbing 20 by selectively using the twist of the first limiter 42 and the second limiter 43.

[0054] The first limiter 42 may be installed inside the spindle 41 of the spindle module 31, and the second limiter 43 may be placed outside the spindle 41 in parallel with the first limiter 42. Therefore, the second limiter 43 may be connected to the spindle 41 via the switching unit 44 and the power transmission module 36, or it may be disconnected from the spindle 41.

[0055] The switching unit 44 is located in the emergency tension module 33 and, after the tension unit 43 rotates the spindle 41 to wind up the webbing 20, it can be switched to selectively use the twist of the first limiter 42 and the second limiter 43 to adjust the release load of the webbing 20. This allows the switching unit 44 to adjust the load that the webbing 20 places on the occupant's shoulder and the amount of movement of the webbing 20.

[0056] The power transmission module 36 may be located on the front and rear sides of the seat belt retractor 30 and functions to connect the modules in order to transmit the force generated by each module, for example, the emergency tension module 33 and the pre-tension module 34, to the spindle module 31.

[0057] Therefore, the front-to-rear width of the seat belt retractor 30 may be limited to the width of the entire module, including the power transmission module 36 that connects each module and the housing or bracket in which each module is installed.

[0058] For example, the power transmission module 36 may include a plurality of gears connected to the drive shaft of the device, a plurality of rotating shafts on which each gear is installed, and a housing that shields the outer surfaces of the gears and rotating shafts.

[0059] Incidentally, the spindle module 31 and the sensor module 32 are basic modules that constitute the seat belt retractor 30, and may be manufactured as separate modules and assembled as shown in Figure 1, or they may be provided as a single integrated module.

[0060] The sensor module 32 may be provided as a vehicle sensor device including an acceleration sensor for detecting changes in the vehicle's acceleration and a tilt sensor for detecting changes in the vehicle's tilt.

[0061] In this embodiment, it is shown that both changes in vehicle tilt and changes in vehicle acceleration are detected using the sensor module 32.

[0062] The spindle module 31 is equipped with a spindle 41 on which webbing 20 is wound around its outer surface.

[0063] The spindle module 31 can operate to retract the webbing 20 when the vehicle's acceleration or tilt changes due to a vehicle collision.

[0064] The spindle module 31 can further provide a function to retract the webbing by a predetermined distance in order to secure the child seat when combined with the sensor module 32.

[0065] In the following explanation, the pulling direction of the webbing 20 is defined as upward (U), and the mounting direction of the spindle 41 is defined as the front-to-back direction (F,B).

[0066] The spindle module 31 is equipped with a spindle 41 on which webbing 20 is wound around its outer surface.

[0067] The spindle module 31 can operate to retract the webbing 20 when the acceleration of the webbing 20's extension or the tilt of the vehicle changes due to a vehicle collision.

[0068] For this purpose, the spindle module 31 may further include, along with the webbing 20 and the spindle 41, a spindle disk 23 and a spindle gear 24 positioned on both sides of the spindle 41, i.e., at the front and rear ends.

[0069] The spindle module 31 can further provide the function of retracting the webbing 21 by a predetermined distance in order to secure the child seat.

[0070] In the following explanation, the pulling direction of the webbing 20 is defined as upward (U), and the mounting direction of the spindle 41 is defined as the front-to-back direction (F, B).

[0071] In this embodiment, the thickness of the seat belt retractor 30, i.e., its width in the vehicle's longitudinal direction, is kept to a minimum so that the seat belt retractor can be attached to a slim seat.

[0072] For example, each module may be manufactured with the same thickness of approximately 40 mm to 90 mm, or modules other than the spindle module 31 may be manufactured with the same thickness as the spindle module 31, or with a thickness thinner than the spindle module 31.

[0073] In particular, the overall thickness of the seat belt retractor 30 may be 1.5 times or less the width of the webbing 20. For example, if the width of the webbing 20 is approximately 50 mm, the thickness of the seat belt retractor 30 may be approximately 75 mm or less.

[0074] In addition, each module can be selectively positioned on the side of the spindle module 31, i.e., on the right or left side, or on the top or bottom of the spindle module 31, relative to the center of the spindle module 31. Thus, each module can be mechanically connected by a power transmission module 36 that connects the modules and transmits power.

[0075] For example, the spindle module 31 may be located on one side or in the center of the seat belt retractor 30, and the emergency tension module 33, sensor module 32, and pre-tension module 34 may be located on one side or both sides of the spindle module 31.

[0076] Naturally, this disclosure is not limited to this.

[0077] For example, the sensor module 32 and the emergency tension module 33 may be located to the left or right of the spindle module 31, and the pre-tension module 34 may be located above or below the spindle module 31.

[0078] Alternatively, the pre-tension module 34 may be located to the left or right of the spindle module 31, and the sensor module 32 and emergency tension module 33 may be located above or below the spindle module 31 and the pre-tension module 34.

[0079] In this embodiment, the other modules, namely the sensor module 32, emergency tension module 33, pre-tension module 34, and additional function module, are arranged on one side of the spindle 41, as viewed in Figure 4, with the spindle module 31 as the axis, and on the right side.

[0080] Furthermore, the other modules are connected to each other via power transmission modules 36 located on the front and rear sides, and transmit power to the spindle 41.

[0081] For this reason, the drive shafts of the other modules may be arranged parallel to or perpendicular to the orientation of the spindle 41.

[0082] As described above, some of the modules mentioned above, such as the pre-tension module 34, may be omitted, or additional functional modules may be combined and assembled as needed, depending on the vehicle specifications and the specifications of the seat belt retractor 30.

[0083] In this embodiment, the modules other than the spindle module 31 are manufactured to the same thickness as the spindle module 31, or to a thinner thickness than the spindle module 31, so that the front-to-back width of the seat belt retractor 30 attached to the backrest 12 of the seat 11 (see Figure 2) can always be maintained.

[0084] In this disclosure, since the modules other than the spindle module are positioned relative to the spindle, the amount (or load) and thickness of the seat belt webbing wound onto the spindle do not affect the longitudinal width of the seat belt retractor on which the spindle is installed.

[0085] Therefore, by manufacturing each module of the seat belt retractor 30 with the minimum possible thickness and arranging the modules other than the spindle module 31 relative to the spindle 41, the width of the seat belt retractor 30 in the front-to-back direction can be minimized, resulting in a slimmer design.

[0086] Thus, this disclosure can be effectively applied to slim seats by minimizing the overall volume of the seat belt retractor and enabling the seat belt retractor to be installed in a narrow space.

[0087] Each combined module is arranged parallel or perpendicular to the installation direction of the spindle 41, such that the axes provided on each module face the same direction, for example, the front-to-back direction. Therefore, each module can be configured to continuously transmit or receive power using power transmission members such as gears, chains, and belts provided on the power transmission module 36 described above.

[0088] In other words, the power transmission module 36 may include a spindle gear connected to the spindle 41, a locking gear provided in the emergency tension module 33, a transmission gear connected to the power transmission section that transmits the rotational force generated by the drive motor of the pre-tension module 34, and one or more connecting gears that connect these gears.

[0089] The following describes in detail the coupling structure and operation method between the seat belt retractor and the backrest frame according to preferred embodiments of this disclosure.

[0090] In this embodiment, brackets are installed on the front and rear sides of each module constituting the seat belt retractor 10, and each module is fixed to the backrest frame 15 using the brackets.

[0091] For example, a front bracket 45 and a rear bracket 46 can be installed on the front and rear surfaces of the spindle module 31, respectively, and the front bracket 45 and the rear bracket 46 can be connected to brackets located on the front and rear surfaces of different modules, respectively.

[0092] Therefore, in this embodiment, the front bracket and the rear bracket connected to each other are collectively referred to as the front bracket 45 and the rear bracket 45, respectively.

[0093] A first flange 47 and a second flange 48 may be formed at both ends of the front bracket 45 and the rear bracket 46, respectively, which are fixed to both sides of the mounting space 13 formed in the backrest frame 15.

[0094] For example, the front bracket 45 of the spindle module 31 may be formed in a substantially hexahedral shape with the right and rear sides open, and the first flange 47 may be bent to the left from the left rear end of the front bracket 45.

[0095] On the other hand, the rear bracket 46 of the spindle module 31 may be formed in a roughly hexahedral shape that is close to a plate, and the second flange 46 may be bent to the left from the front left end of the rear bracket 46.

[0096] Therefore, in a side view, the first flange 47 and the second flange 48 overlap each other at a position close to the rear surface of the rear bracket 46.

[0097] The first flange 47 and the second flange 48 may each have fixing holes through which a fixing member passes. That is, the first flange 47 formed at both ends of the front bracket 45 and the second flange 48 formed at both ends of the rear bracket 46 can be fixed to the backrest frame 15 by a fixing member that passes through the fixing holes while overlapping each other.

[0098] Here, fixing grooves 19 may be formed on both sides of the backrest frame 15 so as to secure the first flange 45 and the second flange 46. The fixing grooves 19 may be formed recessed forward relative to the rear surface of the backrest frame 15.

[0099] Therefore, the first flange 47, the second flange 48, and the fixing member are fixed to the fixing recess 19 such that the rear surface of the backrest frame 15 and the rear surface of the second flange 48 fixed to the fixing recess 19 are substantially flush.

[0100] Therefore, this disclosure makes it possible to prevent damage or breakage of the cover due to interference with fixing members or flanges during the process of installing the cover on the seat backrest while the seat belt retractor is attached to the seat backrest, and to ensure the flatness of the outer surface of the cover installed on the seat backrest.

[0101] Accordingly, one or more third flanges 49 may be further formed on the upper end of the rear bracket 46.

[0102] For example, there may be three third flanges 49 spaced at equal intervals, and each third flange 49 may have a fixing hole formed through it so that a fixing member fixed to the upper end of the backrest frame 15 can pass through it.

[0103] In this way, the first flange and the second flange formed on the front bracket and rear bracket, respectively, are fixed to the backrest frame in an overlapping state, thereby improving the fixing force of the seat belt retractor and allowing it to be firmly fixed, thus effectively preventing vibration and movement of the seat belt retractor that occurs when the vehicle is in operation.

[0104] Incidentally, the headrest pole 18 is connected to the backrest frame 15 and the seat belt retractor 30, with the seat belt retractor 30 attached to the backrest frame 15.

[0105] For this purpose, the seat belt retractor 30 may have a pair of through spaces 37 that allow a pair of headrest poles 18 to pass through and connect.

[0106] For example, a pair of through spaces 37 may be formed on both sides of the sensor module 32, which is positioned approximately in the center of the seat belt retractor 30.

[0107] In other words, as seen in Figure 5, the through space 37 on the left can be formed between the spindle module 31 and the sensor module 32, and the through space 37 on the right can be formed between the pre-tension module 34 and the sensor module 32.

[0108] Therefore, by fixing the seat belt retractor to the backrest and then connecting the headrest pole through the backrest, the fixing force of the seat belt retractor can be further improved, and the workability during assembly can be improved.

[0109] In this manner, with the seat belt retractor 30 attached to the backrest frame 15, the webbing 20 is pulled out from the left end of the seat belt retractor 30, i.e., the left end of the spindle module 31, via a mounting projection 16 formed on the backrest frame 15. Here, the mounting projection 16 may form a roughly "L" shaped rotation space 161 when viewed from above. The rotation space 161 is the space in which the webbing 20, pulled out to the outside of the backrest frame 15, rotates horizontally.

[0110] In other words, with both ends of the webbing 20 facing the front-to-rear direction of the vehicle, similar to the spindle 41, the orientation of the webbing 20 is changed so that it faces the horizontal direction of the vehicle in the space between the spindle module 31 and the mounting projection 16 of the backrest frame 15.

[0111] Then, the webbing 20 is pulled out to the outside through the pull-out hole formed in the webbing pull-out portion 142 of the guide member 14 attached to the mounting projection 16.

[0112] In this case, as shown in Figure 2, the webbing 20 can be switched to various angles and directions depending on the occupant's physical condition and body type.

[0113] In other words, the guide member 14 can rotate horizontally around the fixing member fixed to the mounting projection 16, and the webbing 20 can rotate horizontally as a result of the rotation of the guide member 14, and be pulled out at various angles and directions.

[0114] Therefore, this disclosure makes it possible to prevent inconvenience to the occupant caused by contact with the seat belt webbing by adjusting the direction and angle of extension of the seat belt webbing in various ways according to the occupant's physical condition and body type.

[0115] The inventions made by the inventors of the present application have been specifically described above based on the embodiments described above. However, this disclosure is not limited to the embodiments described above, and various modifications are possible within the scope of the technical essence of this disclosure.

[0116] In other words, although the above embodiment described the configuration of a seat belt retractor applied to the driver's seat, it is also possible to apply the same seat belt retractor to the passenger seat by rotating it 180° and changing only the structure of the bracket corresponding to the direction in which the seat belt webbing is pulled out and the structure attached to the backrest frame.

[0117] As described above, this disclosure allows for the application of a seat belt retractor of the same structure to the driver's seat or passenger seat, thereby reducing the number of parts, lowering product manufacturing costs, and improving parts management efficiency. [Industrial applicability]

[0118] This disclosure applies to seat belt retractor technology that restrains and safely protects occupants in emergency situations of a vehicle, and allows for diverse adjustment of the retraction and extension angles of the seat belt webbing.

Claims

1. It is a seat belt retractor, A spindle module including a seat belt webbing and a spindle on which the seat belt webbing is wound around its outer surface, The spindle module comprises a front bracket and a rear bracket, which are coupled to the front and rear sides, respectively. A seat belt retractor, wherein a first flange and a second flange are formed at both ends of the front bracket and the rear bracket, overlapping each other, so as to be fixed to the seat back frame.

2. The seat belt retractor according to claim 1, wherein the seat belt webbing is pulled out while positioned along the longitudinal direction of the vehicle around the spindle, and then switches to be positioned along the horizontal direction of the vehicle within the internal space of the backrest frame.

3. The seat belt retractor according to claim 1, wherein fixing grooves are formed in the portion of the backrest frame where the first flange and the second flange are formed.

4. The seat belt retractor according to claim 3, wherein one or more third flanges are formed on the upper end of the rear bracket so as to be fixed to the backrest frame using a fixing member.

5. A guide member for guiding the seat belt webbing is attached to one side of the aforementioned backrest frame. The seat belt retractor according to claims 1 to 4, wherein the guide member rotates around a fixing member fixed to the backrest frame to adjust the pulling direction and angle of the seat belt webbing.

6. The backrest frame is provided with a mounting portion so that the guide member can be attached. The seat belt retractor according to claim 5, wherein a rotation space is formed in the mounting portion so that the seat belt webbing can rotate.

7. A headrest is attached to the upper end of the aforementioned backrest frame. The seat belt retractor according to claim 5, wherein a pair of through spaces are formed in the seat belt retractor so that a pair of poles provided on the headrest can be connected through it.

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