Vehicles and seat belt systems

Abstract

To inhibit a situation that makes removal of a seat belt difficult during an emergency of a vehicle, such as a side collision.SOLUTION: A seat belt device 10 includes: a seat belt 24 formed in a belt shape; a tongue plate 26 through which the seat belt 24 is inserted; a buckle 28; and a belt-end engagement section 32. The buckle 28 is provided at one side as seen in a seat width direction of a seat 12 of a vehicle and the tongue plate 26 is detachably engaged therewith. The belt-end engagement section 32 is provided at the other side in the seat width direction of the seat 12 of the vehicle and an end of the seat belt 24 is engaged therewith. Further, the belt-end engagement section 32 has an emergency button 46 which is operated by an occupant of the vehicle during an emergency of the vehicle to enable removal of the end of the seat belt 24.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to Vehicles and a seat belt device. [Background Art]

[0002] The following Patent Document 1 discloses a vehicle in which a seat such as a driver's seat can be switched between a state facing the front side of the vehicle and a state facing the rear side of the vehicle by rotating the seat in a plan view of the vehicle. [Prior Art Documents] [Patent Documents]

[0003] [Patent Document 1] Japanese Unexamined Patent Publication No. 2017-039400 [Summary of the Invention] [Problem to be Solved by the Invention]

[0004] Incidentally, when a seat equipped with a seat belt device including a seat belt to be worn by a seated occupant, a tongue plate through which the seat belt is inserted, and a buckle with which the tongue plate engages rotates in a plan view of the vehicle, it is conceivable that the buckle is disposed on the side door side of the vehicle. In this case, when the vehicle has a side collision, the side door is displaced toward the vehicle interior side, which may reduce the clearance between the buckle and the side door. As a result, it is considered that the buckle becomes difficult to operate, which makes it difficult to unfasten the seat belt.

[0005] In view of the above facts, the present invention can suppress the difficulty in unfastening the seat belt in an emergency of the vehicle such as a side collision Vehicles and and an object of the present invention is to obtain a seat belt device. [Means for Solving the Problem]

[0006] The seat belt device of the first embodiment comprises a seat belt formed in the shape of a strip, a tongue plate through which the seat belt is inserted, a buckle provided on one side of the seat width direction of the vehicle seat and to which the tongue plate is detachably locked, and a belt end locking part provided on the other side of the seat width direction of the vehicle seat and to which the end of the seat belt is locked and which has a release operation part that allows the end of the seat belt to be released when operated by the occupant of the vehicle in the event of an emergency.

[0007] According to the first embodiment of the seat belt device, the seat belt is fastened to an occupant seated in a vehicle seat by locking the tongue plate onto the buckle. In the event of a vehicle emergency such as a side collision, if it is difficult for the occupant seated in the vehicle seat to operate the buckle and detach the tongue plate from the buckle, the occupant can operate the release mechanism of the belt end locking part. When the occupant seated in the vehicle seat operates the release mechanism of the belt end locking part, the end of the seat belt detaches from the belt end locking part. This allows the occupant seated in the vehicle seat to remove the seat belt.

[0008] A second embodiment of a seat belt device further comprises a pretensioner portion that, in the case of an emergency of the vehicle, pulls in the belt end locking portion to remove slack in the seat belt, wherein, before the pretensioner portion is activated, the belt end locking portion is positioned in a position where the occupant of the vehicle cannot operate the release operation portion, and after the pretensioner portion is activated, the belt end locking portion is positioned in a position where the occupant of the vehicle can operate the release operation portion.

[0009] In the second embodiment of the seat belt device, before the pretensioner is activated, the vehicle occupant cannot operate the release mechanism. When the pretensioner is activated, the belt end locking mechanism is retracted, and the slack in the seat belt is removed. When the pretensioner is activated, the belt end locking mechanism is positioned so that the vehicle occupant can operate the release mechanism. If it is difficult for the occupant seated in the vehicle seat to operate the buckle and release the tongue plate from the buckle, the occupant can operate the release mechanism of the belt end locking mechanism. When the occupant seated in the vehicle seat operates the release mechanism of the belt end locking mechanism, the end of the seat belt is released from the belt end locking mechanism. This allows the occupant seated in the vehicle seat to remove the seat belt.

[0010] The third embodiment of the seat belt device is the seat belt device of the second embodiment, further comprising a covering member that separates the belt end locking portion side from the occupant seated in the vehicle seat, and having an opening formed in a part thereof, wherein the release operation portion is covered by the covering member before the pretensioner portion is activated, and the release operation portion is positioned to overlap with the opening after the pretensioner portion is activated.

[0011] According to the third embodiment of the seat belt device, before the pretensioner is activated, the release operation part is covered by the covering member. Therefore, the occupant of the vehicle cannot operate the release operation part. After the pretensioner is activated, the release operation part is positioned to overlap with the opening. When it is difficult for an occupant seated in the vehicle to operate the buckle and release the tongue plate from the buckle, the occupant can operate the release operation part of the belt end locking part through the opening formed in the covering member. When an occupant seated in the vehicle operates the release operation part of the belt end locking part through the opening formed in the covering member, the end of the seat belt is released from the belt end locking part. This allows the occupant seated in the vehicle to remove the seat belt.

[0012] The seat belt device of the fourth embodiment is configured such that, in the seat belt device of the first embodiment, the belt end locking portion includes a belt end locking portion body and a release operation portion supported by the belt end locking portion body, and under normal vehicle conditions, the belt end locking portion body and the release operation portion are the same color or of a similar color to each other, and in an emergency of the vehicle, at least a part of the release operation portion lights up.

[0013] According to the seat belt device of the fourth embodiment, under normal vehicle conditions, the belt end locking part body and the release operation part are the same color or of a similar color to each other. This makes the portion of the belt end locking part corresponding to the release operation part less conspicuous under normal vehicle conditions. In contrast, in an emergency, at least a part of the release operation part lights up. This makes the portion of the belt end locking part corresponding to the release operation part more conspicuous under emergency conditions.

[0014] The fifth embodiment of the seat belt device is the seat belt device of the first embodiment, wherein the buckle is provided with a buckle-side release operation part that can be operated by the occupant of the vehicle to release the tongue plate, and the operating load on the release operation part required to release the end of the seat belt from the belt end locking part is set to a higher operating load than the operating load on the buckle-side release operation part required to release the tongue plate from the buckle.

[0015] According to the seat belt device of the fifth embodiment, the operating load required to release the end of the seat belt from the belt end locking portion is set to a higher operating load than the operating load required to release the tongue plate from the buckle on the buckle side release operating portion. As a result, even if the release operating portion is operated with the same operating load as the buckle side release operating portion, it is impossible to prevent the end of the seat belt from coming off the belt end locking portion.

[0016] The seat belt device of the sixth embodiment is configured in the seat belt device of the first embodiment, wherein the belt end locking portion comprises a belt end locking portion body and a release operation portion supported by the belt end locking portion body, and the buckle comprises a buckle body and a buckle-side release operation portion supported by the buckle body and which allows the tongue plate to be released when operated by the occupant of the vehicle, wherein the position of the release operation portion relative to the belt end locking portion body is set further back toward the belt end locking portion body than the position of the buckle-side release operation portion relative to the buckle body.

[0017] According to the seat belt device of the sixth embodiment, the release operation part relative to the belt end locking part body is positioned further back toward the belt end locking part body than the position of the buckle-side release operation part relative to the buckle body. This prevents the vehicle occupant from mistakenly operating the release operation part of the belt end locking part instead of the buckle.

[0018] A seat belt device according to a seventh embodiment comprises a seat belt formed in the shape of a strip, a tongue plate through which the seat belt is inserted, a buckle provided on one side of the seat width direction of the vehicle seat and to which the tongue plate is detachably locked, and an operating space forming member provided on one side of the seat width direction of the vehicle seat and outward in the seat width direction relative to the buckle, which, when pressed toward the buckle, displaces toward the other side of the seat width direction together with the buckle while ensuring a space between itself and the buckle that allows the buckle to be operated.

[0019] According to the seatbelt device of the seventh aspect, when an occupant seated on a vehicle seat locks the tongue plate to the buckle, the seatbelt is worn by the occupant. Here, in an emergency of the vehicle such as a side collision, when the operation space forming member is pressed toward the buckle side, the operation space forming member is displaced to the other side in the seat width direction together with the buckle in a state where a space enabling operation of the buckle is secured between the operation space forming member and the buckle. Therefore, even in a vehicle emergency, an occupant seated on the vehicle seat can operate the buckle to release the tongue plate from the buckle. This allows the occupant seated on the vehicle seat to remove the seatbelt.

[0020] The seatbelt device according to the eighth aspect is the seatbelt device according to the seventh aspect, wherein a deformable member that deforms to a side opposite to the operation space forming member when the operation space forming member is pressed toward the buckle side is provided on an outer side in the seat width direction of the vehicle seat relative to the operation space forming member.

[0021] According to the seatbelt device of the eighth aspect, a deformable member is provided on an outer side in the seat width direction of the vehicle seat relative to the operation space forming member. The deformable member deforms to the side opposite to the operation space forming member when the operation space forming member is pressed toward the buckle side. This makes it possible to suppress displacement of the operation space forming member toward the buckle side by an amount corresponding to the deformation amount of the deformable member.

Effects of the Invention

[0022] According to the present invention, the Vehicles and seatbelt device has an excellent effect that it can suppress the difficulty in removing the seatbelt in a vehicle emergency such as a side collision.

Brief Description of Drawings

[0023] [Figure 1] It is a front view schematically showing a vehicle seat provided with the seatbelt device according to the first embodiment, and shows a state before a pretensioner unit is activated. [Figure 2] It is a schematic view of the covering member as viewed from the inner side in the seat width direction, showing a state before the pretensioner portion is activated. [Figure 3] It is a front view schematically showing a vehicle seat provided with the seat belt device according to the first embodiment, showing a state after the pretensioner portion is activated. [Figure 4] It is a schematic view of the covering member as viewed from the inner side in the seat width direction, showing a state after the pretensioner portion is activated. [Figure 5] It is a front view schematically showing a vehicle seat provided with the seat belt device according to the first embodiment, showing a state where an end portion of the seat belt is detached from the belt end locking portion. [Figure 6] It is an enlarged front view showing an enlarged periphery of a belt end locking portion of the seat belt device according to the second embodiment, showing a state before the release operation portion is lit up. [Figure 7] It is an enlarged front view showing an enlarged periphery of a belt end locking portion of the seat belt device according to the second embodiment, showing a state where the release operation portion is lit up. [Figure 8] It is an enlarged side view showing an enlarged periphery of a belt end locking portion of the seat belt device according to the third embodiment, showing a state where the release operation portion is lit up. [Figure 9] It is an enlarged front view showing an enlarged belt end locking portion and an end portion of the seat belt of the seat belt device according to the fourth embodiment, wherein only the periphery of the release operation portion is shown in a cross-sectional view. [Figure 10] It is an enlarged side view showing an enlarged belt end locking portion and an end portion of the seat belt of the seat belt device according to the fifth embodiment. [Figure 11] It is an enlarged front view showing an enlarged periphery of a buckle of the seat belt device according to the sixth embodiment, showing a state before the vehicle experiences a side collision. [Figure 12] It is an enlarged front view showing an enlarged periphery of a buckle of the seat belt device according to the sixth embodiment, showing a state after the vehicle experiences a side collision. [Figure 13]This is an enlarged front view showing an enlarged view of the area around the buckle of the seat belt device of the seventh embodiment, indicating the state before the vehicle is involved in a side collision. [Figure 14] This is an enlarged front view showing an enlarged view of the area around the buckle of the seat belt device of the seventh embodiment, illustrating the state after a side collision of the vehicle. [Modes for carrying out the invention]

[0024] (Seat belt device 10 of the first embodiment) A seat belt device 10 according to the first embodiment of the present invention will be described with reference to Figures 1 to 5.

[0025] As shown in Figure 1, the seat belt device 10 of this embodiment is installed on the seat 12 of a vehicle. Here, the vehicle on which the seat 12 is installed is, for example, an autonomous vehicle that can be driven without the occupant operating the vehicle. The seat 12 includes a seat cushion 14 that supports the seated occupant's buttocks from below the seat, a seat back 16 that supports the seated occupant's back from behind the seat, and a headrest 18 that supports the seated occupant's head from behind the seat. The front side of the seat, the rear side of the seat, the left side of the seat, and the right side of the seat refer to the front side, rear side, right side, and left side of the seat as seen from the perspective of an occupant seated on the seat 12. The left side and right side of the seat correspond to the width direction of the seat. Hereafter, when simply referring to the front-rear, up-down, and left-right directions, unless otherwise specified, they refer to the front-rear direction of the seat, the up-down direction of the seat, and the left-right direction of the seat.

[0026] A rotating support section 22 is provided between the seat 12 and the vehicle floor 20, which supports the seat 12 so that it can rotate axially in the vertical direction. This rotating support section 22 allows the seat 12 to be rotated between a forward-facing position and a rearward-facing position. Furthermore, the rotating support section 22 is equipped with a locking mechanism to lock the rotation of the seat 12. This makes it possible to maintain the seat 12 in both the forward-facing and rearward-facing positions.

[0027] The seat belt device 10 of this embodiment is a so-called three-point seat belt device. This seat belt device 10 comprises a strip-shaped seat belt (webbing) 24, a retractor 25 through which the seat belt 24 is wound, a tongue plate 26 through which the seat belt 24 is inserted, and a buckle 28 that engages with the tongue plate 26. The seat belt device 10 also comprises a locking member 30 fixed to the end of the seat belt 24 opposite to the side wound onto the retractor 25, a belt end locking portion 32 to which the locking member 30 is locked, and a covering member 34 that covers the belt end locking portion 32. Furthermore, the seat belt device 10 includes a pretensioner portion 36 that removes slack in the seat belt 24 in the event of a vehicle emergency.

[0028] One end of the seat belt 24 is wound onto a retractor 25 fixed inside the seat back 16. A locking member 30 is fixed to the other end of the seat belt 24.

[0029] The buckle 28 comprises a buckle body 38 and a buckle-side button 40, which is supported by the buckle body 38 and serves as a buckle-side release mechanism operated by the vehicle occupant. The buckle body 38 is fixed to one end (the right side in this embodiment) in the seat width direction of the seat cushion 14 via a connecting member 42. The buckle body 38 is designed to be locked with a portion of the tongue plate 26 inserted into it. The tongue plate 26 can be released from the buckle body 38 by pressing the buckle-side button 40 downwards relative to the buckle body 38.

[0030] The basic configuration of the belt end locking part 32 is the same as that of the buckle 28. The belt end locking part 32 comprises a belt end locking part body 44 and an emergency button 46, which serves as a release operation part and is supported by the belt end locking part body 44. The belt end locking part body 44 is fixed to the other end (left side in this embodiment) in the seat width direction of the seat cushion 14 via a connecting member 48. The belt end locking part body 44 is designed to lock the locking member 30 in place when it is inserted. By pressing the emergency button 46 downwards relative to the belt end locking part body 44, the locking member 30 can be released from the belt end locking part body 44.

[0031] The connecting member 48 is connected to the pretensioner section 36. When the pretensioner section 36 is activated, the connecting member 48 is pulled downward. As a result, the belt end locking section 32 connected to the connecting member 48 is pulled downward, and the slack in the seat belt 24 is removed.

[0032] The covering member 34 is formed in a plate shape, and most of it is fixed to the other end of the seat cushion 14 in the seat width direction (the left side in this embodiment) with the seat cushion 14 positioned between the seat cushion 14 and the belt end locking portion 32. As shown in Figure 2, the covering member 34 has a fan-shaped plate portion 50 when viewed from the inside in the seat width direction (the side of the occupant seated on the seat 12). A rectangular opening 52 is formed in the center of this fan-shaped plate portion 50 in the vertical and front-rear directions. In this state before the pretensioner portion 36 is activated, the belt end locking portion body 44 of the belt end locking portion 32 is positioned to overlap with the opening 52 in the seat width direction, and the emergency button 46 of the belt end locking portion 32 is covered by the covering member 34.

[0033] (Operation and effects of this embodiment) Next, the operation and effects of this embodiment will be described.

[0034] As shown in Figure 1, the seat belt 24 is fastened to the occupant when the occupant, seated on the seat 12, fastens the tongue plate 26 to the buckle body 38 of the buckle 28.

[0035] As shown in Figure 2, under normal vehicle conditions, the belt end locking body 44 of the belt end locking part 32 is positioned to overlap with the opening 52 of the covering member 34 in the seat width direction, and the emergency button 46 of the belt end locking part 32 is covered by the covering member 34. Therefore, under normal vehicle conditions, it is suppressed that an occupant seated in the seat 12 may accidentally press the emergency button 46 of the belt end locking part 32. Normal vehicle conditions refer to the state in which the vehicle is moving or stopped, and that no abnormal acceleration due to collision or the like is acting on the vehicle.

[0036] Furthermore, in the event of a vehicle emergency, such as a side collision, the pretensioner unit 36 ​​is activated as shown in Figures 3 and 4. When the pretensioner unit 36 ​​is activated, the connecting member 48 is pulled downward, and the belt end locking portion 32 connected to the connecting member 48 is pulled downward. This removes the slack in the seat belt 24, increasing the restraining force of the seat belt 24 on the occupant seated in the seat 12. Also, as the belt end locking portion 32 is pulled downward due to the activation of the pretensioner unit 36, the emergency button 46 on the belt end locking portion 32 is positioned to overlap with the opening 52 of the covering member 34 in the seat width direction.

[0037] Incidentally, in vehicles in which the seat 12 can be rotated vertically as its axis, when the seat 12 is turned towards the rear, the buckle 28 may be positioned towards the side door 54. In this case, as shown by the dashed line in Figure 3, during a side collision of the vehicle, the side door 54 is displaced toward the buckle 28, reducing the space available to operate the buckle-side button 40 of the buckle 28. As a result, it may become difficult for an occupant seated in the seat 12 to press the buckle-side button 40 of the buckle 28 and detach the tongue plate 26 from the buckle body 38. In this case, the occupant can operate the emergency button 46 of the belt end locking portion 32 through the opening 52 of the covering member 34. When an occupant seated in the seat 12 operates the emergency button 46 of the belt end locking portion 32, the locking member 30 detaches from the belt end locking portion body 44, as shown in Figure 5. That is, the other end of the seat belt 24 detaches from the belt end locking portion 32. This allows an occupant seated in seat 12 to remove the seat belt 24. In this way, the seat belt device 10 of this embodiment can prevent difficulty in removing the seat belt 24 in the event of a vehicle emergency such as a side collision.

[0038] (Seat belt devices 56, 58 according to the second and third embodiments) Next, the seat belt devices 56 and 58 according to the second and third embodiments will be described with reference to Figures 6 to 8. In the seat belt devices 56 and 58 according to the second and third embodiments, the members and parts corresponding to the seat belt device 10 of the first embodiment are denoted by the same reference numerals as the members and parts corresponding to the seat belt device 10 of the first embodiment, and their descriptions may be omitted.

[0039] As shown in Figure 6, in the seat belt device 56 of the second embodiment, the portion of the belt end locking part body 44 that is visible to the occupant and the portion of the emergency button 46 that is visible to the occupant are formed using materials of the same color or similar color. Similar colors refer to colors with similar hues. For example, black and gray are similar colors, and orange and red are similar colors. In addition, the emergency button 46 is formed using a material that can transmit light. Furthermore, a light source is provided inside the emergency button 46.

[0040] In the seat belt device 56 of the second embodiment described above, under normal vehicle conditions, the portion of the belt end locking part body 44 visible to the occupant and the portion of the emergency button 46 visible to the occupant are the same color or a similar color to each other. This makes the portion of the belt end locking part 32 corresponding to the emergency button 46 less conspicuous under normal vehicle conditions. In contrast, as shown in Figure 7, in the event of a vehicle emergency, a light source provided inside the emergency button 46 emits light. As a result, the light from the light source passes through the emergency button 46, causing the emergency button 46 to emit light. For example, the emergency button 46 may emit light in red or orange. Thus, in the seat belt device 56 of the second embodiment, the portion of the belt end locking part 32 corresponding to the emergency button 46 can be made more conspicuous in the event of a vehicle emergency.

[0041] As shown in Figure 8, the seat belt device 58 of the third embodiment has the same configuration as the seat belt device 56 of the second embodiment, except that the emergency button 46 lights up so that the word "PUSH" appears. In the seat belt device 58 of the third embodiment, the part of the belt end locking portion 32 corresponding to the emergency button 46 can be made inconspicuous when the vehicle is in normal operation. Furthermore, the part of the belt end locking portion 32 corresponding to the emergency button 46 can be made conspicuous when the vehicle is in an emergency. In addition, the word "PUSH" can be used to inform the occupant how to operate the emergency button 46.

[0042] (Seat belt devices 60, 62 according to the fourth and fifth embodiments) Next, the seat belt devices 60 and 62 according to the fourth and fifth embodiments will be described with reference to Figures 9 and 10. In the seat belt devices 60 and 62 according to the fourth and fifth embodiments, members and parts corresponding to the seat belt device 10 of the first embodiment are denoted by the same reference numerals as the members and parts corresponding to the seat belt device 10 of the first embodiment, and their descriptions may be omitted.

[0043] As shown in Figure 9, in the seat belt device 60 of the fourth embodiment, the emergency button 46 relative to the belt end locking part body 44 is positioned further inside the belt end locking part body 44 than the position of the buckle-side button 40 (see Figure 1) relative to the buckle body 38. Here, as shown in Figure 1, the portion of the buckle-side button 40 that is pressed by the occupant is exposed to the outside of the buckle body 38. In contrast, as shown in Figure 9, the portion of the emergency button 46 that is pressed by the occupant is located inside the belt end locking part body 44. The belt end locking part body 44 has an operating hole 64 that penetrates in the vertical direction. The emergency button 46 is positioned below this operating hole 64.

[0044] In the seat belt device 60 of the fourth embodiment described above, the emergency button 46 cannot be pressed unless a finger is inserted into the operating hole 64 formed in the belt end locking part body 44. This prevents the occupant from mistakenly operating the emergency button 46 on the belt end locking part 32 instead of the buckle 28.

[0045] As shown in Figure 10, in the seat belt device 62 of the fifth embodiment, the operating load F required to detach the locking member 30 from the belt end locking body 44 is set to a higher operating load than the operating load required to detach the tongue plate 26 from the buckle body 38 to the buckle-side button 40 (see Figure 1). In the seat belt device 62 of the fifth embodiment, as an example, the operating load F required to detach the locking member 30 from the belt end locking body 44 is set to twice the operating load required to detach the tongue plate 26 from the buckle body 38 to the buckle-side button 40 (see Figure 1).

[0046] In the seat belt device 62 of the fifth embodiment, the operating force F required to the emergency button 46 to allow the locking member 30 to detach from the belt end locking body 44 is set as described above. As a result, even if the emergency button 46 is operated with the same operating force as the buckle-side button 40, it is impossible to prevent the locking member 30 from detaching from the belt end locking body 44.

[0047] (Seat belt devices 66, 68 according to the sixth and seventh embodiments) Next, the seat belt devices 66 and 68 according to the sixth and seventh embodiments will be described with reference to Figures 11 to 14. In the seat belt devices 66 and 68 according to the sixth and seventh embodiments, members and parts corresponding to the seat belt device 10 of the first embodiment are denoted by the same reference numerals as those corresponding to the seat belt device 10 of the first embodiment, and their descriptions may be omitted. Similarly, in the seat belt device 68 according to the seventh embodiment, members and parts corresponding to the seat belt device 66 of the sixth embodiment are denoted by the same reference numerals as those corresponding to the seat belt device 66 of the sixth embodiment, and their descriptions may be omitted.

[0048] As shown in Figure 11, in the seat belt device 66 of the sixth embodiment, an operating space forming member 70 is provided on the outside in the seat width direction relative to the buckle 28. The operating space forming member 70 is formed in a plate shape with the seat width direction as the thickness direction, and its upper end 70B is gently inclined in the seat width direction relative to its lower end 70A. The lower end 70A of the operating space forming member 70 is fixed to the connecting member 42 via a fastening member (not shown). When the lower end 70A of the operating space forming member 70 is fixed to the connecting member 42, the upper end 70B of the operating space forming member 70 extends upward relative to the buckle 28.

[0049] In the seat belt device 66 of the sixth embodiment described above, as shown in Figure 12, when the vehicle collides with the side, the side door 54 is displaced toward the seat 12 from the position shown by the solid line to the position shown by the dashed line, and a part of the side door 54 presses the operating space forming member 70 toward the buckle 28. When the operating space forming member 70 is pressed toward the buckle 28, the operating space forming member 70 is displaced to the left together with the buckle 28. Here, in the seat belt device 66 of the sixth embodiment, when the operating space forming member 70 is displaced to the left together with the buckle 28, a space is secured between the operating space forming member 70 and the buckle 28 that allows the buckle 28 to be operated. Therefore, even after a side collision of the vehicle, the occupant seated in the seat 12 can operate the buckle-side button 40 of the buckle 28 to detach the tongue plate 26 from the buckle body 38. As a result, the occupant seated in the seat 12 can remove the seat belt 24. Thus, the seat belt device 66 of this embodiment makes it possible to prevent the seat belt 24 from becoming difficult to remove in the event of a vehicle emergency such as a side collision.

[0050] As shown in Figure 13, the seat belt device 68 of the seventh embodiment includes a deformation member 72 positioned outward in the seat width direction relative to the upper end 70B of the operating space forming member 70. This deformation member 72 is, for example, part of the interior material of the side door 54.

[0051] In the seat belt device 68 of the seventh embodiment described above, as shown in Figure 14, when the vehicle collides with the side, the side door 54 is displaced toward the seat 12 from the position shown by the solid line to the position shown by the dashed line, and a part of the side door 54 presses the operating space forming member 70 toward the buckle 28. When the operating space forming member 70 is pressed toward the buckle 28, the operating space forming member 70 is displaced to the left together with the buckle 28. Here, in the seat belt device 68 of the seventh embodiment, when a part of the side door 54 presses the operating space forming member 70 toward the buckle 28, the deformable member 72 is deformed so as to be crushed in the seat width direction. As a result, the displacement of the operating space forming member 70 toward the buckle 28 can be suppressed by an amount corresponding to the deformation of the deformable member 72.

[0052] Furthermore, the technical concepts of the first to seventh embodiments described above can be combined with each other.

[0053] Although one embodiment of the present invention has been described above, it goes without saying that the present invention is not limited to the above, and can be implemented in various other ways without departing from the spirit of the invention. [Explanation of symbols]

[0054] 10. Seat belt system 24 seat belts 26 Tang Plate 28 Buckles 32 Belt end locking part 34 Covering member 36 Pretensioner section 40. Buckle-side button (buckle-side release mechanism) 44 Belt end locking part body 46. ​​Emergency button (detachment operation section) 52 Aperture 56. Seat belt system 58. Seat belt system 60 Seat belt system 62 Seat belt system 66. Seat belt system 68. Seat belt system 70 Operating space forming member 72 Deformed member

Claims

1. The seats arranged in the car compartment, A rotating support portion is provided between the floor of the passenger compartment and the seat, and is capable of supporting the seat so as to be rotatable in the vehicle's vertical direction, and holding the seat with one side of the seat in the seat width direction positioned towards the side door in the passenger compartment. The seat is provided with a seat belt device that rotates together with the seat by the rotation support portion, The aforementioned seat belt device is A seat belt formed in a strip shape, The tongue plate through which the seat belt is inserted, A buckle provided on one side of the seat in the width direction of the seat, the tongue plate being detachably secured to, A belt end locking part is provided on the other side of the seat width direction of the seat, and has a release operation part that locks the end of the seat belt and allows the end of the seat belt to be released when operated by the occupant, A pretensioner unit that pulls in the belt end locking portion in the event of a vehicle emergency to remove slack in the seat belt, The covering member separates the belt end locking portion from the occupant seated on the seat, and has an opening formed in a part of it. Before the pretensioner unit is activated, the belt end locking portion is positioned so that the occupant cannot operate the release operation portion, and the release operation portion is covered by the covering member. In the state after the pretensioner unit has been activated, the belt end locking portion is positioned so that the occupant can operate the release operation portion, and the release operation portion is positioned so as to overlap with the opening. vehicle.

2. A seat arranged in the vehicle compartment, A rotating support portion is provided between the floor of the passenger compartment and the seat, and is capable of supporting the seat so as to be rotatable in the vehicle's vertical direction, and holding the seat with one side of the seat in the seat width direction positioned towards the side door in the passenger compartment. The seat is provided with a seat belt device that rotates together with the seat by the rotation support portion, The aforementioned seat belt device is A seat belt formed in a strip shape, The tongue plate through which the seat belt is inserted, A buckle provided on one side of the seat in the width direction of the seat, the tongue plate being detachably secured to, The seat comprises a belt end locking section provided on the other side in the seat width direction, which locks the end of the seat belt and has a release operation section that allows the end of the seat belt to be released when operated by the occupant, The belt end locking portion comprises a belt end locking portion body and a release operation portion supported by the belt end locking portion body. Under normal vehicle conditions, the belt end locking part body and the release operation part are the same color or of a similar color to each other. In the event of a vehicle emergency, at least a portion of the release operation unit will illuminate. vehicle.

3. A seat arranged in the vehicle compartment, A rotating support portion is provided between the floor of the passenger compartment and the seat, and is capable of supporting the seat so as to be rotatable in the vehicle's vertical direction, and holding the seat with one side of the seat in the seat width direction positioned towards the side door in the passenger compartment. The seat is provided with a seat belt device that rotates together with the seat by the rotation support portion, The aforementioned seat belt device is A seat belt formed in a strip shape, The tongue plate through which the seat belt is inserted, A buckle provided on one side of the seat in the width direction of the seat, the tongue plate being detachably secured to, The seat comprises a belt end locking section provided on the other side in the seat width direction, which locks the end of the seat belt and has a release operation section that allows the end of the seat belt to be released when operated by the occupant, The buckle is provided with a buckle-side release operation part that allows the tongue plate to be detached when operated by the occupant. The operating force required to detach the end of the seat belt from the belt end locking portion is set to be higher than the operating force required to detach the tongue plate from the buckle on the buckle side detachment portion. vehicle.

4. The belt end locking portion comprises a belt end locking portion body and a release operation portion supported by the belt end locking portion body. The buckle comprises a buckle body and a buckle-side release operation part supported by the buckle body, which allows the tongue plate to be released when operated by the occupant. The vehicle according to any one of claims 1 to 3, wherein the position of the release operation part relative to the belt end locking part body is set to be recessed toward the belt end locking part body than the position of the buckle-side release operation part relative to the buckle body.

5. A seat belt formed in a strip shape, The tongue plate through which the seat belt is inserted, A buckle is provided on one side in the seat width direction of a seat arranged in a vehicle compartment, on the side door side of the vehicle compartment, and the tongue plate is detachably secured to it. An operating space forming member is provided on one side of the seat in the seat width direction and on the outside in the seat width direction relative to the buckle, and when pressed toward the buckle, it displaces together with the buckle toward the other side in the seat width direction while ensuring a space between itself and the buckle that allows the buckle to be operated; A seat belt system equipped with a seat belt.

6. Further outward in the seat width direction from the aforementioned operating space forming member, the side door has a deformable member, The seat belt device according to claim 5, wherein the deformable member deforms toward the opposite side from the operating space forming member as the operating space forming member is pressed toward the buckle side.

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