Seat belt retractor

Abstract

The present invention relates to a seat belt retractor comprising: a spindle module including a seat belt webbing and a spindle having an outer surface on which the seat belt webbing is wound; and front and rear brackets respectively coupled to front and rear sides of the spindle module, wherein the front and rear brackets have first and second flange parts formed on both ends of the front and rear brackets so as to be fixed to a backrest frame of a seat in a state of the front and rear brackets overlapping each other, so that when an emergency situation of a vehicle occurs, an occupant can be restrained and safely protected, and the angle of insertion and withdrawal of the seat belt webbing can be variously adjusted.

Description

seat belt retractor

[0001] The present invention relates to a seat belt retractor, and more particularly, to a seat belt retractor that prevents a seat belt webbing from being pulled out in the event of an emergency such as a collision accident while driving a vehicle.

[0002] Typically, vehicles are equipped with seat belt devices to ensure the safety of passengers.

[0003] The above seat belt device comprises a seat belt retractor that operates to wind or pull out a belt-shaped seat belt webbing (hereinafter referred to as “webbing”) that secures a passenger onto a spool, and a buckle into which a tongue fixed to one end of the webbing is detachably inserted.

[0004] The above seat belt retractor prevents a passenger wearing a seat belt from being thrown forward or removed from the seat due to driving inertia, etc., when the vehicle stops suddenly or accelerates suddenly due to an accident, etc. The seat belt retractor allows the webbing to be pulled out in a normal state when the seat belt is worn, but if an acceleration of the webbing pullout or a change in the vehicle's inclination is detected due to a vehicle collision, etc., the seat belt retractor may include an emergency tensioning device and a pre-tensioning device that suppress further webbing pullout and reduce slack or sagging of the webbing.

[0005] For example, patent documents 1 and 2 below disclose a seat belt retractor technology that controls the inlet and outlet movements of a seat belt webbing.

[0006] These seat belt retractors can be mounted on a vehicle body, such as the center pillar, seat backrest, or rear pillar. Therefore, the mounting position of the seat belt retractor can vary depending on the structure of the center pillar, seat backrest, or rear pillar. In other words, the seat belt retractor is not always mounted horizontally, but may be mounted at a certain angle from the horizontal in the left-right or front-back directions.

[0007] Recently, seats installed in vehicles are being manufactured slimmer by designing the backrests to have a thinner front-to-back thickness (hereinafter referred to as "thickness"). These slim seats are sometimes equipped with a Belt-In-Seat (BIS) device that integrates with the seat.

[0008] In particular, seats for autonomous vehicles are being developed to be able to rotate left and right, and the backrest can be rotated backwards by up to 180°.

[0009] Meanwhile, in the case of a seat belt retractor according to the prior art, the direction of webbing withdrawal is always fixed while it is fixedly installed on the installation target, i.e., the backrest of the seat or the body of the vehicle.

[0010] In addition, the integrated seat belt device according to the prior art is manufactured and installed separately with a driver's side seat belt retractor and a passenger's side seat belt retractor so that the webbing is pulled out at an angle symmetrical to each other depending on the position where the seat is installed in the vehicle, i.e., the driver's side and the passenger's side.

[0011] Due to this, the integrated seat belt device according to the prior art has problems such as increased manufacturing cost due to increased number of parts of the seat belt retractor, difficulty in managing parts, and occurrence of incorrect assembly by workers.

[0012] Additionally, there is a need for the development of seat belt retractor technology that can be firmly attached to slimmed-down seats and operate smoothly to maximize the interior space of the vehicle.

[0013] (Patent Document 1) U.S. Patent No. 6,499,554 (registered on December 31, 2002)

[0014] (Patent Document 2) U.S. Patent No. 6,443,382 (registered on September 3, 2002)

[0015] The purpose of the present invention is to solve the above-mentioned problems, and to provide a seat belt retractor that can restrain and safely protect passengers in case of an emergency in a vehicle, and can adjust the inlet and outlet angles of the seat belt webbing in various ways.

[0016] Another object of the present invention is 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 mounted in a vehicle.

[0017] Another object of the present invention is to provide a seat belt retractor that can operate smoothly when installed on a seat, can be applied to a slim seat, and can easily be equipped with a headrest.

[0018] In order to achieve the above-described purpose, a seat belt retractor according to the present invention comprises a spindle module including a seat belt webbing and a spindle on the outer surface of which the seat belt webbing is wound, and front and rear brackets respectively coupled to the front and rear sides of the spindle module, and first and second flange portions are formed at both ends of the front and rear brackets and are fixed to a backrest frame of a seat in an overlapping state.

[0019] As described above, the seat belt retractor according to the present invention provides the effect of safely protecting passengers by restraining them in the event of an emergency in a vehicle, and of being able to adjust the inlet and outlet angles of the seat belt webbing in various ways.

[0020] And according to the present invention, by arranging other modules based on the spindle, an effect is obtained in that the amount of winding (or load) and thickness of the seat belt webbing wound on the spindle can be configured not to affect the width in the front-rear direction in which the spindle is installed in the seat belt retractor.

[0021] Accordingly, according to the present invention, the width of the seat belt retractor in the front-rear direction is minimized, so that it can be installed in a narrow space, and thus the effect of being effectively applied to a slim seat is obtained.

[0022] In addition, according to the present invention, by forming a fixing groove portion to which a flange portion provided on a seat belt retractor is fixed on a backrest frame, the effect of preventing damage or breakage of the cover due to interference with a fastening member or flange, etc., in the process of installing the cover on the backrest while the seat belt retractor is mounted on the backrest of the seat is obtained, and ensuring the flatness of the outer surface of the cover installed on the backrest.

[0023] In addition, according to the present invention, by fixing the first and second flange portions formed on the front and rear brackets, respectively, to the backrest frame in an overlapping state, the fixing force for the seat belt retractor is increased, thereby fixing it firmly, thereby effectively preventing vibration or movement of the seat belt retractor that may occur while the vehicle is being driven.

[0024] In addition, according to the present invention, by penetratingly connecting the headrest pole while the seat belt retractor is fixed to the backrest, the fixing force of the seat belt retractor can be further increased, and workability during assembly can be improved.

[0025] Figure 1 is a perspective view showing a seat belt retractor according to a preferred embodiment of the present invention installed on a seat.

[0026] Figures 2 and 3 are perspective views showing the combined and disassembled states of the backrest frame and seat belt retractor of the backrest shown in Figure 1, respectively.

[0027] Fig. 4 is a perspective view of the seat belt retractor illustrated in Fig. 3 from a different angle;

[0028] Figure 5 is a cross-sectional view along line AA' shown in Figure 4.

[0029] Hereinafter, a seat belt retractor and a seat to which the same is applied according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0030]

[0031] Hereinafter, the direction toward the steering wheel based on the vehicle seat is referred to as 'forward (F)', and the opposite direction is referred to as 'rear (B)'. In addition, terms indicating directions such as 'left (L)', 'right (R)', 'upward (U)', and 'downward (D)' are defined as indicating each direction based on the aforementioned forward (F) and rearward (B).

[0032] In this embodiment, the configuration of an integrated seat belt (Belt In Seat, BIS) device integrated into the backrest of a seat is described, but the present invention is not necessarily limited thereto.

[0033] That is, it should be noted that the present invention can be modified to be installed in various locations, such as not only the backrest of a seat, but also a pillar disposed on the side of a vehicle body, a body panel on the rear side of a seat, a roof or floor of a vehicle body, etc.

[0034]

[0035] First, the configuration of a seat belt device to which a seat belt retractor according to a preferred embodiment of the present invention is applied will be described in detail with reference to FIGS. 1 to 3.

[0036] FIG. 1 is a perspective view showing a seat belt retractor according to a preferred embodiment of the present invention installed on a seat, and FIGS. 2 and 3 are perspective views showing the combined state and disassembled state of the seat belt retractor and the backrest frame of the backrest shown in FIG. 1, respectively.

[0037] As shown in FIGS. 1 to 3, the seat belt device (10) includes a belt-shaped seat belt webbing (hereinafter referred to as “webbing”) (20) for fixing a passenger, a seat belt retractor (30) mounted on a backrest (12) of a seat (11) for winding the webbing (20) when necessary, a belt tongue (21) installed on a drawn-out end of the webbing (20), and a buckle (not shown) into which the belt tongue (21) is detachably inserted.

[0038] A mounting space (13) for mounting a seat belt retractor (30) may be provided in the backrest (12) of the seat (11).

[0039] A mounting space (13) is provided inside the backrest (12), and a guide member (14) that guides a webbing (20) extended from the spindle module (31) to the outside of the backrest (12) can be installed on one side of the mounting space (13).

[0040] The mounting space (13) can be provided at the upper rear side of the backrest (12). That is, the mounting space (13) is a space formed on the backrest frame (15) placed inside the backrest, and the seat belt retractor (20) is placed in the mounting space (13) formed in the backrest frame (15) and can be firmly fixed to the backrest frame (15) using a fastening member to be described below.

[0041] Of course, the present invention is not necessarily limited to this, and in FIG. 1, the mounting space (13) is shown approximately in the center of the upper part of the backrest (12), but it may be formed at a position spaced downward by a certain distance from the upper part of the backrest (12), or may be formed offset to the left or right from the center of the backrest (12).

[0042] Additionally, the mounting space (13) may be provided in various locations, such as the body, i.e., the body panel on the rear side of the pillar or seat, the ceiling or floor of the body, etc.

[0043] That is, although the present embodiment describes an integrated seat belt device integrated with a slim seat, it should be noted that the present invention can be modified to be applicable to a seat belt device applied to a general seat or vehicle structure.

[0044] On one side of the mounting space (13), a space can be formed in communication where the webbing (20) pulled out from the seat belt retractor (30) is arranged toward the guide member (14).

[0045] The guide member (14) may be rotatably mounted on the upper left side of the backrest frame (15) when applied to the upper side of one side of the backrest (12), for example, the driver's seat (11). For this purpose, a mounting projection (16) on which the guide member (14) is mounted may be protrudingly formed on the upper left side of the backrest frame (15).

[0046] Therefore, the guide member (14) can be rotatably mounted around an axis such as a fastening bolt fastened to the mounting protrusion (16) of the backrest frame (15).

[0047] For example, the guide member (14) may include a fastening portion (141) in which a through hole is formed through which the fastening bolt passes, and a webbing withdrawal portion (142) in which a withdrawal hole is formed through which the webbing (20) is withdrawn or introduced.

[0048] That is, the guide member (14) is provided as a plate member having a roughly triangular or pentagonal shape, and the webbing extraction portion (142) can be formed with a wider width than the width of the webbing (20) so that the webbing (20) can be smoothly extracted or inserted through the extraction hole.

[0049] Therefore, the webbing (20) can be rotated to change the direction and angle of withdrawal depending on the body type or physique of the passenger.

[0050] Meanwhile, a headrest (17) that supports the head of the passenger may be mounted on the upper part of the backrest (12). A pair of headrest poles (18) that are connected to the upper part of the backrest frame (15) may be provided on the lower part of the headrest (17).

[0051] This headrest pole (18) can be installed to the backrest frame (15) by penetrating the seat belt retractor (30) installed on the backrest frame (15) in the up-down direction. Here, the headrest pole (18) can be installed to the backrest frame (15) in a way that it can be moved up and down so that the height of the headrest (17) can be adjusted according to the body type or physique of the passenger.

[0052]

[0053] Next, the configuration of a seat trap retractor according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 2 to 5.

[0054] Fig. 4 is a perspective view of the seat belt retractor illustrated in Fig. 3 from a different angle, and Fig. 5 is a cross-sectional view taken along line AA' illustrated in Fig. 4.

[0055] A seat belt retractor (30) according to a preferred embodiment of the present invention is manufactured by modularizing each component applied to the seat belt retractor (30) into functional blocks, as shown in FIGS. 2 to 5, and selectively combining each modularized component.

[0056] To explain in detail, the seat belt retractor (30) may include a spindle module (31) on which the webbing (20) is wound, a sensor module (32) that detects changes in the inclination and acceleration of the vehicle, and an emergency tensioning module (33) that winds the webbing (20) to reduce slack when a collision of the vehicle occurs.

[0057] And the seat belt retractor (30) may further include a pre-tensioning module (34) and an additional function module that smoothly withdraws the webbing (20) during normal driving of the vehicle and reduces slack by winding the webbing (20) just before a collision occurs.

[0058] In this embodiment, the seat belt retractor (30) can be assembled by modularizing each component applied to the seat belt retractor (30), i.e., the spindle module (31), the sensor module (32), the emergency tensioning module (33), the pre-tensioning module (34), and the additional function module, and selectively combining each modularized component.

[0059] The above additional function module may further include at least one of a load adjustment module (35) that adjusts the load applied to the webbing (20) according to the passenger status conditions including the passenger's physique or weight information, and a power transmission module (36) that mechanically connects each module and transmits the power generated when each module is driven to the spindle module (31).

[0060] For example, the load control module (35) may include a first limiter (42) that provides a relatively large high level load to the spindle (41) when the passenger seated in the corresponding seat is a relatively heavy adult male, a second limiter (43) that provides a relatively small low level load to the spindle (41) when the passenger seated in the corresponding seat is a relatively light female or child, and a switching unit (44) that switches to control the load for releasing the webbing (20) by selectively using the torsion of the first limiter (42) and the second limiter (43).

[0061] The first limiter (42) is installed inside the spindle (41) of the spindle module (31), and the second limiter (43) can be arranged parallel to the first limiter (42) on the outside of the spindle (41). Thus, the second limiter (43) can be connected or disconnected from the spindle (41) through the switching unit (44) and the power transmission module (36).

[0062] The switching unit (44) can be switched to adjust the load for releasing the webbing (20) by selectively using the torsion of the first limiter (42) and the second limiter (43) after the webbing (20) is wound by rotating the spindle (41) by the tensioning unit (43) provided in the emergency tensioning module (33). Accordingly, the switching unit (44) can adjust the load applied to the shoulder portion of the passenger by the webbing (20) and the amount of movement of the webbing (20).

[0063] The power transmission module (36) is provided on the front and rear sides of the seat belt retractor (30) to transmit the power generated from each module, such as the emergency tensioning module (33) and the pre-tensioning module (34), to the spindle module (31), and functions to connect each module.

[0064] Therefore, the width in the front-rear direction of the seat belt retractor (30) can be limited to the width of the entire module including the power transmission module (36) that connects each module to each other and the housing or bracket on which each module is installed.

[0065] For example, the power transmission module (36) may include a plurality of gears connected to the drive shaft of each device, a plurality of rotational shafts on which each gear is installed, and a housing that shields the outer surface of each gear and rotational shaft.

[0066] Meanwhile, the spindle module (31) and the sensor module (32) are basic modules that constitute the seat belt retractor (30), and may be manufactured and assembled as individual modules as shown in FIG. 1, or may be integrated into one module.

[0067] The sensor module (32) may be provided as a vehicle sensor device including an acceleration sensor that detects a change in acceleration of the vehicle and an inclination sensor that detects a change in inclination of the vehicle.

[0068] In this embodiment, it is described that both changes in the inclination and acceleration of the vehicle are detected using a sensor module (32).

[0069] The spindle module (31) is provided with a spindle (41) on which a webbing (20) is wound on the outer surface.

[0070] The spindle module (31) can operate to wind the webbing (20) when a change in acceleration or inclination of the vehicle occurs due to a collision of the vehicle.

[0071] These spindle modules (31) may be combined with a sensor module (32) to provide an additional function of only pulling in the webbing at a certain section to secure a child seat.

[0072] Below, the direction in which the webbing (20) is pulled out is set to upward (U), and the direction in which the spindle (41) is mounted is set to the front-back direction (F, B).

[0073] The spindle module (31) is provided with a spindle (41) on which a webbing (20) is wound on the outer surface.

[0074] The spindle module (31) can operate to wind the webbing (20) when a change in acceleration of the webbing (20) or a change in the inclination of the vehicle occurs due to a collision of the vehicle.

[0075] To this end, the spindle module (31) may further include a spindle disk (23) and a spindle gear (24) arranged on both sides of the spindle (41), i.e., the front and rear ends, respectively, together with the webbing (20) and the spindle (41).

[0076] These spindle modules (31) may further provide the function of only pulling in the webbing (21) at a certain section to secure a child seat.

[0077] Below, the direction in which the webbing (20) is pulled out is set to upward (U), and the direction in which the spindle (41) is mounted is set to the front-back direction (F, B).

[0078] In this embodiment, in order to mount it on a slimmed-down seat, the thickness of the seat belt retractor (30), i.e., the width in the front-rear direction of the vehicle, is minimized.

[0079] For example, each module may be manufactured with the same thickness of approximately 40 mm to 90 mm, or the remaining modules may be manufactured with a thickness equal to or less than the thickness of the spindle module (31) based on the thickness of the spindle module (31).

[0080] In particular, the overall thickness of the seat belt retractor (30) may be configured to be 1.5 times or less than the width of the webbing (20). For example, when the webbing (20) has a width of approximately 50 mm, the thickness of the seat belt retractor (30) may be manufactured to be approximately 75 mm or less.

[0081] And each module can be selectively placed 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), with the spindle module (31) as the center. Thus, each module can be mechanically connected by a power transmission module (36) that connects each module and transmits power.

[0082] For example, the spindle module (31) may be arranged on one side or the center of the seat belt retractor (30), and an emergency tensioning module (33), a sensor module (32), and a pre-tensioning module (34) may be arranged on one side or both sides of the spindle module (31).

[0083] Of course, the present invention is not necessarily limited to this.

[0084] For example, the sensor module (32) and the emergency tensioning module (33) may be placed on the left or right side of the spindle module (31), and the pre-tensioning module (34) may be placed on the top or bottom of the spindle module (31).

[0085] Alternatively, the pre-tensioning module (34) may be placed on the left or right side of the spindle module (31), and the sensor module (32) and the emergency tensioning module (33) may be placed on the top or bottom of the spindle module (31) and the pre-tensioning module (34).

[0086] In this embodiment, the remaining modules, excluding the spindle module (31), i.e., the sensor module (32), the emergency tensioning module (33), the pre-tensioning module (34), and the additional function module, are described as being arranged on one side of the spindle (41), on the right side when viewed in FIG. 4, with the spindle module (31) having the spindle (41) as its axis.

[0087] And the remaining modules are connected to each other through power transmission modules (36) installed on the front and rear sides to transmit power to the spindle (41).

[0088] For this purpose, the drive shafts of the remaining modules can be arranged parallel to or perpendicular to the arrangement direction of the spindle (41).

[0089] In this way, the present invention can be assembled by excluding some of the above modules, for example, the pre-tensioning module (34), or by combining additional functional modules, depending on the needs, such as the specifications of the vehicle and the specifications of the seat belt retractor (30).

[0090] And in this embodiment, the remaining modules except for the spindle module (31) are manufactured to have the same thickness as the spindle module (31) or a thickness smaller than the thickness of the spindle module (31) so as to maintain a constant front-rear width of the seat belt retractor (30) mounted on the backrest (12) of the seat (11) (see FIG. 2).

[0091] In addition, the present invention can be configured so that the amount of winding (or load) and thickness of the seat belt webbing wound around the spindle do not affect the width in the front-rear direction in which the spindle is installed in the seat belt retractor by arranging the remaining modules excluding the spindle module based on the spindle.

[0092] Accordingly, the seat belt retractor (30) can be manufactured slim by manufacturing each module with a minimum thickness and arranging the remaining modules based on the spindle module (31) and the spindle (41), thereby minimizing the width in the front-rear direction of the seat belt retractor (30).

[0093] In this way, the present invention can be effectively applied to slim seats by minimizing the overall volume of the seat belt retractor so that it can be installed in a narrow space.

[0094] And each combined module is arranged parallel to or perpendicular to the direction in which the spindle (41) is installed so that the axes provided in each module all face the same direction, for example, in the forward and backward direction. Thus, each module can be configured to continuously transmit or receive power using power transmission members such as gears, chains, and belts provided in the above-described power transmission module (36).

[0095] That is, the power transmission module (36) may include a spindle gear connected to the spindle (41), a locking gear provided in the emergency tensioning module (33), a transmission gear connected to the power transmission unit that transmits the rotational force generated from the drive motor of the pre-tensioning module (34), and one or more connecting gears connecting between the respective gears described above.

[0096]

[0097] Next, the combination structure and operating method of the seat belt retractor and the backrest frame according to a preferred embodiment of the present invention will be described in detail.

[0098] In this embodiment, brackets are installed on the front and rear sides of each module constituting the seat belt retractor (10), and the module is fixed to the backrest frame (15) using the brackets.

[0099] For example, front and rear brackets (45, 46) are installed on the front and rear of the spindle module (31), respectively, and the front and rear brackets (45, 46) can be connected to brackets placed on the front and rear of other modules, respectively.

[0100] Therefore, in this embodiment, the front and rear brackets that are connected to each other are collectively referred to as front bracket (45) and rear bracket (45), respectively.

[0101] At both ends of the front and rear brackets (45, 46), first and second flange portions (47, 48) may be formed, which are fixed to both sides of the mounting space (13) formed in the backrest frame (15).

[0102] For example, the front bracket (45) of the spindle module (31) is formed in a roughly hexahedral shape with the right and rear sides open, and the first flange portion (47) can be formed by bending in the left direction at the rear end of the left side of the front bracket (45).

[0103] On the other hand, the rear bracket (46) of the spindle module (31) is formed in a hexahedral shape almost like a plate, and the second flange portion (46) can be formed by bending in the left direction at the front end of the left side of the rear bracket (46).

[0104] Therefore, the first and second flange portions (47, 48) can overlap each other at a position close to the rear of the rear bracket (46) when viewed from the side.

[0105] The first and second flange portions (47, 48) may each have a fastening hole formed through which a fastening member passes. That is, the first flange portion (47) formed at both ends of the front bracket (45) and the second flange portion (48) formed at both ends of the rear bracket (46) may be fixed to the backrest frame (15) by a fastening member passing through the fastening hole while overlapping each other.

[0106] Here, a fixing groove (19) to which the first and second flange portions (45, 46) are fixed may be formed on both sides of the backrest frame (15). The fixing groove (19) may be formed to be concave toward the front rather than the rear of the backrest frame (15).

[0107] Accordingly, as the first and second flange portions (47, 48) and the fastening member are fixed to the fixed groove portion (19), the rear surface of the backrest frame (15) can be positioned almost on the same plane as the rear surface of the second flange portion (48) fixed to the fixed groove portion (19).

[0108] Accordingly, the present invention can prevent damage or breakage of the cover due to interference with a fastening member or flange, etc., during the process of installing the cover on the backrest while the seat belt retractor is mounted on the backrest of the seat, and can secure the flatness of the outer surface of the cover installed on the backrest.

[0109] In addition, one or more third flange portions (49) may be further formed on the upper side of the rear bracket (46).

[0110] For example, the third flange portion (49) may be provided in three pieces arranged at regular intervals, and a fastening hole may be formed in each third flange portion (49) through which a fastening member fastened to the upper portion of the backrest frame (15) passes.

[0111] In this way, the present invention secures the first and second flange portions formed on the front and rear brackets, respectively, to the backrest frame in an overlapping state, thereby increasing the fixing force for the seat belt retractor and firmly fixing it, thereby effectively preventing vibration or movement of the seat belt retractor that may occur while the vehicle is being driven.

[0112] Meanwhile, as described above, when the seat belt retractor (30) is mounted on the backrest frame (15), the headrest pole (18) is connected by penetrating through the backrest frame (15) and the seat belt retractor (30).

[0113] For this purpose, a pair of penetration spaces (37) through which a pair of headrest poles (18) are penetrated and connected may be formed in the seat belt retractor (30).

[0114] For example, a pair of penetration spaces (37) may be formed on each side of a sensor module (32) positioned approximately in the center of the seat belt retractor (30).

[0115] That is, as seen in FIG. 5, the left through space (37) can be formed between the spindle module (31) and the sensor module (32), and the right through space (37) can be formed between the pretensioning module (34) and the sensor module (32).

[0116] Accordingly, the present invention can further increase the fixing force of the seat belt retractor by penetratingly connecting the headrest pole while the seat belt retractor is fixed to the backrest, and improve workability during assembly work.

[0117] In this way, when the seat belt retractor (30) is mounted on the backrest frame (15), the webbing (20) is pulled outward through the mounting projection (16) formed on the backrest frame (15) at the left end of the seat belt retractor (30), i.e., the left end of the spindle module (31). Here, a rotation space (161) having a roughly 'L' shape when viewed from above can be formed in the mounting projection (16). The rotation space (161) is a space in which the webbing (20) pulled outward from the backrest frame (15) rotates left and right.

[0118] That is, the webbing (20) is arranged so that both ends face the front-back direction of the vehicle in the same manner as the spindle (41), and the direction of arrangement is changed to face the left-right direction of the vehicle in the space between the spindle module (31) and the mounting protrusion (16) of the backrest frame (15).

[0119] Next, the webbing (20) is pulled out through a pull-out hole formed in the webbing pull-out portion (142) of the guide member (14) mounted on the mounting protrusion (16).

[0120] At this time, the webbing (20) can be turned to various angles and directions depending on the passenger's physical condition or body shape, as shown in FIG. 2.

[0121] That is, the guide member (14) rotates left and right about the fastening member that is fastened to the mounting protrusion (16), and the webbing (20) rotates left and right by the rotational motion of the guide member (14) so ​​that it can be pulled out at various angles and directions.

[0122] Accordingly, the present invention can prevent discomfort to passengers due to contact with the seat belt webbing by variously adjusting the direction and angle of the seat belt webbing depending on the physical condition or body shape of the passenger.

[0123] Although the invention made by the present inventor has been specifically described according to the above embodiments, the present invention is not limited to the above embodiments, and it goes without saying that various modifications can be made without departing from the spirit of the invention.

[0124] That is, although the above embodiment described the configuration of the seat belt retractor applied to the driver's seat, the present invention can be applied to the passenger seat by rotating the same seat belt retractor by 180° and changing only the structure of the bracket so as to correspond to the direction in which the seat belt webbing is pulled out and the structure in which it is mounted on the backrest frame.

[0125] In this way, the present invention can apply a seat belt retractor having the same structure to the driver's seat or the passenger seat, thereby reducing the number of parts, thereby reducing the manufacturing cost of the product, and improving the efficiency of parts management.

[0126] The present invention is applied to a seat belt retractor technology that can safely protect passengers by restraining them in the event of an emergency in a vehicle and can adjust the inlet and outlet angles of the seat belt webbing in various ways.

Claims

1. A spindle module including a seat belt webbing and a spindle on which the seat belt webbing is wound on the outer surface; and Includes front and rear brackets respectively coupled to the front and rear sides of the spindle module, A seat belt retractor characterized in that first and second flange portions are formed at both ends of the front and rear brackets and are fixed to the backrest frame of the seat in an overlapping state.

2. In paragraph 1, A seat belt retractor characterized in that the seat belt webbing is pulled out from the spindle in a state arranged along the front-rear direction of the vehicle and then converted to be arranged along the left-right direction of the vehicle in the space inside the backrest frame.

3. In paragraph 1, A seat belt retractor characterized in that the backrest frame has a fixing groove formed in each portion where the first and second flange portions are arranged.

4. In paragraph 3, A seat belt retractor characterized in that the upper portion of the rear bracket is provided with at least one third flange portion that is fixed to the backrest frame using a fastening member.

5. In any one of paragraphs 1 to 4, A guide member for guiding the seat belt webbing is mounted on one side of the above backrest frame, A seat belt retractor characterized in that the guide member rotates around a fastening member fastened to the backrest frame to adjust the direction and angle of withdrawal of the seat belt webbing.

6. In paragraph 5, The above backrest frame is provided with a mounting portion to which the above guide member is mounted, A seat belt retractor characterized in that a rotation space is formed in the above mounting portion so that the seat belt webbing can rotate.

7. In paragraph 5, A headrest is mounted on the top of the above backrest frame, A seat belt retractor characterized in that a pair of penetration spaces are formed in the seat belt retractor through which a pair of poles provided in the headrest are penetrated and connected.

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