KR20230140811A - Seat belt apparatus - Google Patents

Abstract

It relates to a seat belt device, which is an integrated seat belt device mounted on the back of a seat installed in a vehicle, including a strip-shaped seat belt webbing that secures the occupant and a seat that is mounted on the back of the seat and winds the seat belt webbing when necessary. A configuration including a belt retractor is provided, and the direction and angle in which the seat belt webbing is withdrawn from the seat backrest can be adjusted depending on the occupant's body type and purpose of use.

Description

Seat belt device {SEAT BELT APPARATUS}

The present invention relates to a seat belt device, and more specifically, to a seat belt device that restrains an occupant by preventing the seat belt webbing from being pulled out in the event of an emergency situation in a vehicle.

Generally, vehicles are equipped with seat belt devices on seats to ensure the safety of occupants.

The seat belt device includes a retractor that operates to wind or withdraw a strip-shaped seat belt webbing (hereinafter referred to as 'webbing') that secures the occupant onto a spool, and a tongue fixed to one end of the webbing that is detachably inserted. It is made up of a buckle.

The retractor prevents an occupant wearing a seat belt from being thrown forward or leaving the seat due to driving inertia during a sudden stop or sudden acceleration due to a vehicle accident, etc. These retractors allow the webbing to be pulled out under normal conditions when the seat belt is worn, but when a change in the webbing withdrawal acceleration or vehicle inclination is detected due to a vehicle collision, it is a device that suppresses further webbing withdrawal and causes the webbing to become loose or It may include emergency tensioning devices and pre-tensioning devices that reduce deflection, or slack.

For example, Patent Document 1 and Patent Document 2 below disclose a retractor technology that controls the unwinding and retracting operations of seat belt webbing.

Such a seat belt retractor may be mounted on a vehicle body, for example, a center pillar of a vehicle, a seat backrest, a rear pillar, etc. Accordingly, the mounting posture of the seat belt retractor can be changed in various ways depending on the structure of the center pillar, seat backrest, rear pillar, etc. That is, the seat belt retractor is not always mounted in a horizontal state, but may be mounted tilted at a certain angle from the horizontal state in the left-right direction or in the front-back direction.

Recently, seats installed in vehicles are manufactured to be slim by designing the thickness of the backrest in the front and rear directions (hereinafter abbreviated as 'thickness') to be thin. Additionally, an integrated seat belt (Belt In Seat, BIS) device that is integrated into the seat is sometimes applied.

In particular, seats used in self-driving cars are being developed so that they can rotate left and right, and the backrest can be rotated backwards up to 180°.

However, in the integrated seat belt device according to the prior art, the seat belt retractor is fixedly installed on the backrest, so the pulling direction of the webbing is always fixed.

For example, when the occupant rotates the backrest rearward to rest, the relative change in the position of the webbing pulled out from the fixedly installed seat belt tractor may result in contact with a part of the occupant's body, such as the neck or face area. There was a problem that caused inconvenience.

In addition, when an infant, whose physique is smaller than that of an adult, rides, conventionally, to ensure collision safety for the occupants, a separate device such as a child resistance seat (CRS) or boost is used to remove the webbing draw-out. There was a problem that it had to be moved downward.

U.S. Patent No. 6,499,554 (registered on December 31, 2002) U.S. Patent No. 6,443,382 (registered on September 3, 2002) Republic of Korea Patent Registration No. 10-1766844 (announced on August 9, 2017)

The purpose of the present invention is to solve the problems described above and to provide a seat belt device that restrains and safely protects occupants in the event of an emergency situation in a car.

Another object of the present invention is to provide a seat belt device that can variously adjust the withdrawal angle of the seat belt webbing.

In order to achieve the above-described object, the seat belt device according to the present invention is an integrated seat belt device that is mounted on the backrest of a seat installed in a vehicle, and is mounted on the backrest of the seat and the strip-shaped seat belt webbing that secures the occupant. It includes a seat belt retractor that retracts the seat belt webbing when necessary, and the direction and angle of the seat belt webbing being withdrawn from the backrest are adjusted depending on the occupant's body type and purpose of use.

As described above, according to the seat belt device according to the present invention, the effect of being able to freely adjust the direction and angle of the webbing pulled out from the seat backrest according to the occupant's body type or purpose of use is obtained.

According to the present invention, by changing the arrangement direction of the spindle around which the webbing is wound, the effect of minimizing the front-to-back width when mounted on the backrest of the seat and making it slim can be obtained.

1 is a rear view of an integrated seat belt device according to the prior art.
Figure 2 is a view showing a state in which the seat belt device according to a preferred embodiment of the present invention is installed on the backrest of the seat;
Figure 3 is a perspective view of the seat belt retractor shown in Figure 2;
Figures 4 and 5 are operation state diagrams showing a state in which the withdrawal angle of the webbing is adjusted, respectively.

Hereinafter, a seat belt device according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

First, before explaining the configuration of a seat belt device according to a preferred embodiment of the present invention, the configuration of a seat belt device according to the prior art will be briefly described with reference to FIG. 1.

1 is a rear view of an integrated seat belt device according to the prior art.

Figure 1 shows the integrated seat belt device applied to the backrest of a reclining seat as seen from the rear.

Hereinafter, the direction toward which the steering wheel is facing based on the vehicle's seat is referred to as 'forward (F)', and the opposite direction is referred to as 'rear (B)'. And terms indicating directions such as 'left (L)', 'right (R)', 'upward (U)' and 'downward (D)' are based on the front (F) and back (B) above. It is defined as indicating each direction.

The seat belt device (1) according to the prior art includes a strip-shaped seat belt webbing (hereinafter referred to as 'webbing') (2) that secures the occupant, and is mounted on the backrest (12) of the seat (11) and webbing (2) when necessary. It includes a seat belt retractor (3) for winding, a belt tongue (4) installed on the drawn end of the webbing (2), and a buckle (5) into which the belt tongue (4) is removably inserted.

The seat belt retractor (3) includes a spindle (6) around which the webbing (2) is wound, a sensor unit that detects the tilt of the vehicle, and an emergency tensioner that reduces slack by winding the webbing (2) in the event of an emergency such as a vehicle collision. It may include a tensioning unit and a pre-tensioning unit that smoothly withdraws the webbing (2) during normal driving of the vehicle and reduces slack by wrapping the webbing (2) just before an emergency situation occurs.

In the seat belt device 1 according to the prior art configured as described above, the spindle 6 is installed on the backrest 12 along the left and right directions of the vehicle, and one side of the webbing 2 is wound around the outer surface of the spindle 6. The other side is pulled upward.

Therefore, in the seat belt device 1 according to the prior art, as the length of the webbing 2 wound around the spindle 3 increases, the width of the seat belt retractor 3 in the front-back direction at which it is mounted on the vehicle inevitably increases.

Additionally, the seat belt device 1 according to the prior art had a problem in that the direction in which the webbing 2 was pulled out from the seat belt retractor 3 was fixed to a constant state, making it impossible to adjust the pull-out angle of the webbing 2.

In order to solve this problem, the present invention is configured to change the direction in which the spindle of the seat belt retractor is mounted on the backrest of the seat and to vary the withdrawal angle of the webbing.

Next, the configuration of a seat belt device according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 2 and 3.

Figure 2 is a diagram showing the seat belt device according to a preferred embodiment of the present invention installed on the backrest of the seat, and Figure 3 is a perspective view of the seat belt retractor shown in Figure 2.

Figure 2(a) shows a front view of a seat equipped with a seat belt device, and Figure 2(b) shows a rear view of a seat equipped with a seat belt device.

As shown in Figures 2 and 3, the seat belt device 100 according to a preferred embodiment of the present invention includes a strip-shaped seat belt webbing (hereinafter referred to as 'webbing') 21 and a seat 11 that secure the occupant. ) is mounted on the backrest 12 and retracts the webbing 21 when necessary, the belt tongue 110 installed on the drawn end of the webbing 21, and the belt tongue 110 are detachable. It includes a buckle 120 that can be inserted.

A mounting space 13 in which the seat belt retractor 10 is mounted may be provided on the backrest 12 of the seat 11.

The mounting space 13 is provided inside the backrest 12, and a webbing guide 14 is installed on one side of the mounting space 13 to guide the webbing pulled out from the spindle module 20 to the outside of the backrest 12. It can be.

The mounting space 13 may be provided at the rear upper part of the backrest 12.

Of course, in Figure 2, the mounting space 13 is shown approximately at the center of the upper part of the backrest 12, but the present invention is not necessarily limited thereto, and is located at a certain distance downward from the upper end of the backrest 12. It may be formed, or may be formed deviated from the center of the backrest 12 to the left or right.

On one side of this mounting space 13, a space in which the webbing 21 is disposed toward the webbing guide 14 may be in communication.

When applied to the top of one side of the backrest 12, for example, the driver's seat 11, the webbing guide 14 may be provided to partially cover the upper left side and the edge of the upper right side of the backrest 12.

Here, the webbing 21 is pulled out of the backrest 12 through the mounting space 13 and the arrangement space 15 with both ends wound around the spindle 22 facing the front-back direction, and is attached to the webbing guide 14. The withdrawal direction can be changed so that both ends face approximately left and right directions.

For this purpose, the webbing 21 has an autonomous webbing adjuster 211 whose withdrawal direction and withdrawal angle are adjusted between the mounting space 12 provided on the backrest 12 and the webbing guide 14 installed on the upper end of the backrest 12. ) may include.

That is, the autonomous webbing adjusting unit 211 is positioned between the spindle 22 and the webbing guide 14, that is, in the front-to-back direction within the arrangement space 15, so that both ends are oriented in the left-right or up-down direction. The direction in which the tractor 10 is pulled out is changed.

In addition, the autonomous webbing adjusting unit 211 adjusts the angle and direction drawn from the spindle 22 toward the webbing guide 14 according to the position of the webbing guide 14, and the webbing 21 is adjusted to the seat 11. The angle and direction of the belt drawn from the backrest 12 toward the belt tongue 110 can be adjusted.

The seat belt retractor 10 is manufactured by modularizing each part applied to the seat belt retractor 10 into functional blocks and selectively combining each modularized part.

For example, as shown in Figure 3, the seat belt retractor 10 includes a spindle module 20, a sensor module 30, an emergency tensioning module 40, a pre-tensioning module 50, and additional functions. It can be assembled by selectively combining modules.

The spindle module 20 and the sensor module 30 are basic modules that constitute the seat belt retractor 10, and may be manufactured and assembled as separate modules, or may be integrated into one module.

The sensor module 30 and the emergency tensioning module 40 may be placed on the right side of the spindle module 20, and the pre-tensioning module 50 may be placed below the spindle module 20.

Alternatively, the pre-tensioning module 50 is disposed on the left or right side of the spindle module 20, and the sensor module 30 and emergency tensioning module 40 are connected to the spindle module 20 and the pre-tensioning module 50. It may be placed below or above.

In this embodiment, some of the above-described modules may be excluded or additional functional modules may be combined as needed, such as vehicle specifications and specifications of the seat belt retractor 10.

In Figure 3, the spindle module 20 is provided with a spindle 22 on which webbing 21 is wound on the outer surface.

The spindle module 20 may operate to wind the webbing 21 when a change in the pulling acceleration of the webbing 21 or a change in the inclination of the vehicle occurs in an emergency situation such as a vehicle collision.

This spindle module 20 may further provide a function of only retracting the webbing 21 in a certain section to secure a child seat.

Hereinafter, the direction in which the webbing 21 is drawn is assumed to be upward (U), and the direction in which the spindle 22 is installed is assumed to be the front-to-back direction (F, B).

In this embodiment, in order to be mounted on a slimmed down seat, the thickness of the seat belt retractor 10, that is, the front-to-back width, is minimized.

Each module is arranged around the spindle module 20 on the side of the spindle module 20, that is, on the left or right side, or on the top or bottom of the spindle module 20.

For example, a sensor module 30, an emergency tensioning module 40, and a pre-tensioning module 50 may be placed on top of the spindle module 20, respectively.

Here, the spindle module 20 and the sensor module 30 are basic modules constituting the seat belt retractor 10, and may be integrated into one module or manufactured and assembled as separate modules.

And the emergency tensioning module 40 and the pre-tensioning module 50 may be placed on one side of the basic module, for example, at the top.

Each module combined in this way is installed side by side or at a right angle so that the axis provided in each module faces the same direction as the direction in which the spindle 22 is installed, and transmits or transmits power through a power transmission unit such as a gear. It is designed to be delivered.

For example, the axes provided in the emergency tensioning module 40 and the pre-tensioning module 50 are each arranged in parallel with the spindle 22, and the output shaft of the drive motor and the sensor provided in the pre-tensioning module 50 The axis provided in the module 30 may be arranged along the left and right directions so as to be perpendicular to the spindle 22.

Meanwhile, first and second brackets 27 and 28 that are coupled to each other and function as the housing 23 may be coupled to the front and rear sides of the spindle module 20, respectively.

That is, the first bracket 27 is disposed on the front side of the spindle module 20, and the second bracket 28 is disposed on the rear side of the spindle module 28. Additionally, coupling members are provided on both sides of the first bracket 27 and the second bracket 28, and installation members installed on the backrest 12 are provided at the lower ends of the first and second brackets 27 and 28. It can be provided.

In addition, a pull-out space 251 into which the webbing 21 is pulled out may be provided on one side of the first and second brackets 27 and 28, that is, at the lower left side. A guide member 29 may be installed in the pull-out space 251 along the front-back direction in the same way as the spindle 22.

The guide member 29 functions to guide the webbing 22 to be drawn upward. This guide member 29 is a roller whose front and rear ends are rotatably coupled to the first and second brackets 27 and 28, respectively, so that the webbing 21 can be smoothly wound or pulled out from the spindle 22. It can be prepared with

Therefore, the front-to-back width of the entire seat belt retractor 10 may be limited to the front-to-back width of the first and second brackets 27 and 28.

Next, the webbing withdrawal angle adjustment operation of the seat belt device according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 2, 4, and 5.

Figures 4 and 5 are operation state diagrams showing a state in which the withdrawal angle of the webbing is adjusted, respectively.

Figures 4 and 5 (a) each show a front view of the sheet, and Figures 4 and 5 (b) each show a rear view of the sheet.

When the passenger on the driver's seat 11 is an adult, the webbing 21 is disposed on one side of the backrest 12, as shown in FIG. 2, toward the top left or upward when viewed in FIG. 2. That is, one end of the webbing 21 is wound around the outer surface of the spindle 22, and the other end of the webbing 21 is pulled out of the seat belt retractor 10 and then moved to the webbing guide 14 installed on the backrest 12. is drawn upward toward .

On the other hand, as shown in Figures 4 and 5, where the occupant of the seat 11 is a woman, teenager, or infant with a smaller physique compared to an adult, the seat 11 is pulled out from a position moved downward from the upper left side of the backrest 12. The withdrawal angle can be adjusted.

For example, when the passenger adjusts the angle of the backrest 12 by rotating the backrest 12 rearward, the webbing 21 may get caught on the passenger's neck or shoulder area, causing discomfort.

In addition, it is necessary to adjust the draw-out angle of the webbing 21 according to the body type of the occupant or the purpose of use, such as when an adult, teenager, or infant rides, or when a child seat is installed.

Therefore, an adjusting member (not shown) is installed on the webbing guide 14 to be movable in a preset range from the upper surface of the backrest 12 to the upper left side, and the webbing 21 is guided according to the position of the adjusting member. The withdrawal angle is adjusted by rotating the member 29 as a rotation axis.

For example, the adjustment member may be provided so that it can be temporarily fixed to fixing grooves formed on the webbing guide 14 at certain angles.

In this way, in the present invention, the webbing wound around the spindle is pulled out through one side of the seat belt retractor, and the pulling angle of the webbing can be freely adjusted within the mounting space of the backrest.

Accordingly, the present invention can improve safety by adjusting the direction and angle of the webbing pulled out from the backrest of the seat according to the occupant's physical condition or purpose of use.

At this time, the webbing 21 is arranged so that both ends face forward and backward when pulled out of the spindle module 20, and rotates in one direction when pulled out through the arrangement space 15 and the webbing guide 14 so that both ends It is pulled out in a state where it is arranged to face the left and right directions.

Through the process described above, the present invention can freely adjust the direction and angle of the webbing pulled out from the backrest of the seat.

In addition, the present invention can minimize the front-to-back width when mounted on the backrest of a seat by changing the arrangement direction of the spindle around which the webbing is wound.

In addition, the present invention reduces and minimizes the width of the webbing along with the thickness of the spindle module, thereby minimizing the width at which the spindle module and the seat belt retractor to which it is applied are mounted on the seat, so that it can be manufactured slim.

Meanwhile, in the above embodiment, the spindle placement direction and the webbing pull-out direction were described as being perpendicular to each other, but the present invention is not necessarily limited thereto, and the spindle placement direction and the webbing pull-out direction are determined depending on the surrounding conditions where the spindle is installed. It may also be changed to form a direction other than a right angle, such as an acute or obtuse angle.

In addition, in the above embodiment, the configuration of the seat belt retractor in which the spindle is arranged along the front and rear directions of the vehicle to slim the seat belt retractor has been described, but the present invention is not necessarily limited thereto, and a general seat belt retractor It can also be changed to apply.

Figure 6 is a configuration diagram of a seat belt device according to another embodiment of the present invention.

Figures 6 (a) and (b) illustrate a front view and a perspective view showing a state in which an adjustment module for controlling the webbing withdrawal angle and direction is installed on the backrest of the seat, respectively.

As shown in FIG. 6, the seat belt device 100 according to another embodiment of the present invention is the same as the configuration of the seat belt device 100 described with reference to FIGS. 1 to 3, except that the spindle 22 is A general seat belt retractor 10 disposed along the left and right directions of the vehicle is applied.

That is, the spindle 22 of the seat belt retractor 10 may be arranged in the left and right directions in the mounting space 13 of the backrest 12.

After the webbing 21 is pulled out from the seat belt retractor 10, the pulling direction is adjusted by the adjustment module 60.

The adjustment module 60 may include a rotating member 61 disposed below the seat belt retractor 10 and a rotating shaft 62 that rotatably fixes the rotating member 61 to the frame inside the backrest 12. You can.

The rotating member 61 is formed in a substantially plate shape, and on the upper part of the rotating member 61, the webbing 21 pulled downward from the seat belt retractor 100 is pulled out in a pulling direction so that it faces upward toward the webbing guide 14. A through hole 63 that switches may be formed.

That is, the webbing 21 is pulled downward from the seat belt retractor 10, passes through the through hole 63 of the rotating member 61, and then flows upward toward the webbing guide 14 installed on the backrest 12. The withdrawal direction changes to .

A rotating shaft 62 is installed at the bottom of the rotating member 61, and the rotating shaft 62 may be fixed to the internal frame of the backrest 12.

Therefore, the rotating member 61 rotates clockwise or counterclockwise about the rotating axis 62 depending on the position of the adjusting member provided in the webbing guide 14, and the webbing is pulled out from the backrest 12 of the seat 11 ( 21) The withdrawal angle and direction can be adjusted.

As such, the present invention can adjust the direction and angle of the webbing pulled out from the backrest of the seat by additionally mounting an adjustment module to a general seat belt retractor installed on the backrest of the seat.

Although the invention made by the present inventor has been described in detail according to the above-mentioned embodiments, the present invention is not limited to the above-described embodiments and, of course, can be changed in various ways without departing from the gist of the invention.

The present invention is applied to seat belt device technology that can freely adjust the direction and angle of the webbing pulled out from the seat belt retractor depending on the occupant's body type or purpose of use.

1: Seat belt device
2: Webbing 3: Seat belt retractor
4: Belt tongue 5: Buckle
6: spindle
100: Seat belt device
110: Belt tongue 120: Buckle
10: Seat belt retractor
11: Seat 12: Backrest
13: Mounting space 14: Webbing guide
15: Layout space
20: Spindle module
21: Webbing 211: Autonomous webbing adjustment unit
22: spindle 23: housing
24: guide part 25: guide frame
251: Drawout space 26: Connection member
27, 28: first, second bracket 29: guide member
30: sensor module
40: Emergency tensioning module
50: Pretensioning module
60: Control module 61: Rotating member
62: rotation axis 63: through hole

Claims (11)

In the integrated seat belt device mounted on the backrest of a seat installed in a vehicle,
Band-shaped seat belt webbing that secures the occupants and
It includes a seat belt retractor that is mounted on the back of the seat and retracts the seat belt webbing when necessary,
A seat belt device, wherein the direction and angle of the seat belt webbing being withdrawn from the seat belt retractor are adjusted depending on the occupant's body type and purpose of use. According to paragraph 1,
A belt tongue installed on the drawn end of the seat belt webbing and
A seat belt device characterized in that the belt tongue further includes a buckle into which the belt tongue is detachably inserted. According to paragraph 1,
The seat belt retractor includes a spindle module on an outer surface including a spindle around which the seat belt webbing is wound,
A seat belt device, wherein the spindle is disposed in the mounting space along the front-to-back direction of the vehicle corresponding to the thickness direction of the backrest. According to paragraph 3,
The spindle module further includes first and second brackets disposed at front and rear sides of the spindle, respectively,
A pull-out space is formed on one side of the first and second brackets into which the seat belt webbing wound around the spindle is pulled out,
A guide member is installed in the pull-out space to guide the seat belt webbing to be wound or pulled out from the spindle,
A seat belt retractor, characterized in that the front and rear ends of the guide member are rotatably coupled to the first and second brackets, respectively. According to paragraph 1,
The seat belt webbing is a seat belt device characterized in that it includes an autonomous webbing adjuster whose pull-out direction and pull-out angle are adjusted between the mounting space and the webbing guide installed on the backrest. According to clause 5,
The webbing guide is arranged to partially cover the upper edge of one side of the backrest and the edge of the upper surface,
A seat belt device characterized in that the withdrawal angle of the seat belt webbing is adjusted depending on the position of an adjustment member movably installed on the webbing guide. According to clause 5,
The seat belt webbing is rotated so that both ends pulled out from the spindle module along the front and rear directions of the vehicle face the left and right or up and down directions of the vehicle in the arrangement space formed between the mounting space and the webbing guide, so that the direction of the seat belt webbing is changed. Characterized seat belt device. According to any one of claims 1 to 7,
The spindle module,
A sensor module that detects the tilt of the vehicle,
An emergency tensioning module that reduces slack by winding the webbing in the event of a vehicle emergency, and
A pre-tensioning module that reduces slack by winding the webbing just before an emergency situation occurs in the vehicle is manufactured by modularizing each functional block,
A seat belt device, characterized in that each module is selectively combined with the spindle module. According to clause 8,
Each module combined to be applied to the seat belt retractor has an axis provided in each module arranged parallel to or perpendicular to the direction in which the spindle is arranged,
A seat belt device characterized in that each axis continuously transmits or receives power using a power transmission unit. In number 5,
The seat belt retractor includes a spindle around which the seat belt webbing is wound,
A seat belt device, characterized in that after the seat belt webbing is pulled out from the spindle, the pulling direction and angle are adjusted to face the webbing guide by an adjustment module installed on the backrest of the seat. According to clause 10,
The adjustment module includes a rotating member disposed below the seat belt retractor and
It includes a rotation axis that rotatably fixes the rotation member to the frame inside the backrest,
The seat belt webbing is pulled out from the seat belt retractor, passes through a through hole formed in the rotating member, and then changes its pulling direction to face the webbing guide installed on the backrest.

Images