Auxiliary seat belt

Abstract

To provide an auxiliary seat belt for remarkably improving safety in a recumbent position and improving comfort in the recumbent position by restraining a body of a passenger from moving forward in a front collision and sudden braking when a backrest related to a seat of a vehicle is reclined, the seat is made flat, and the passenger takes a recumbent posture.SOLUTION: The auxiliary seat belt 10 includes a pair of right and left armpit straps 1214, a buckle 16 disposed on a side 12a of one end of one armpit strap 12, and a tongue plate 18 disposed on a side 14a of one end of the other armpit strap 14, and the side 12b of the other end of the one armpit strap 12 and the side 14b of the other end of the other armpit strap 14 are supported and fixed at positions above a shoulder position 34 on the back side of the passenger 30.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an auxiliary seat belt used in conjunction with a seat belt provided in a vehicle, and more particularly to an auxiliary seat belt that significantly improves the safety of passengers who lie down by reclining the backrest of a vehicle seat to make the seat flat. [Background technology]

[0002] The inventors of the present application have provided a seat structure that allows passengers to sleep at night in a stable and safe relaxed position without reducing the number of seats and without disturbing surrounding passengers, particularly those in the rear seats, on long-distance night buses such as long-distance night buses and long-distance night chartered buses, where passengers sleep for long periods of time at night (see, for example, Patent Document 1).

[0003] The seat structure for long-distance night buses disclosed in Patent Document 1 has a seating surface and a backrest, and is installed according to the number of passengers on a long-distance night bus.The seat structure is characterized in that a pair of seats consisting of a front seat and a rear seat are assembled into a unit within a frame consisting of a pair of left and right base members, a pair of left and right girders, a pair of left and right front and rear supports that connect the base members and girders while maintaining a predetermined height, and a front beam and a rear beam that connect the girders while maintaining a predetermined width, and the front seat and rear seat of the pair of seats can be installed within the frame in approximately the same horizontal row, and the front seat can be moved into the space above the rear seat so that the front seat and rear seat can be installed within the frame in approximately the same vertical row.

[0004] According to the seat structure of a long-distance night bus disclosed in Patent Document 1, while ensuring the number of seats, when traveling at night when it is desirable to sleep in a flat position to improve comfort, the front seat of a pair of seats consisting of two seats, one in front and one behind, can be moved into the space above the rear seat and the pair of seats can be installed in approximately the same row vertically, making the installation area of ​​the pair of seats available independently as an exclusive area for the front seat or the rear seat, and by reclining the backrest of the front seat without interfering with the rear seat and setting the seat in a nearly flat position, or even fully flat, it is possible to greatly improve seat comfort, especially when sleeping at night.

[0005] In this application, the term "flat" means that the seat back is reclined to a nearly flat or fully flat state. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 6884120 Summary of the Invention [Problem to be solved by the invention]

[0007] According to the seat structure of a long-distance night bus disclosed in Patent Document 1, the seat back can be reclined to make the seat flat when sleeping at night, thereby significantly improving comfort while sleeping.

[0008] However, because the seat belts installed on conventional long-distance night buses are only two-point or three-point seat belts, there are safety concerns when traveling with the seats in the flat position. If a passenger lies down with the seats flat and stretches their legs out in the direction of travel of the long-distance night bus, for example, with only a conventional two-point seat belt attached to the waist, the passenger's body will move significantly in the direction of travel (i.e., forward) in the event of a frontal collision or sudden braking, which could result in injuries, particularly to the legs, if the passenger collides with the seat in front, or the waist belt of the two-point seat belt will receive a large impact to the abdomen, or, depending on the lying position, the passenger's body may slip through the waist belt and be thrown out of the seat.

[0009] This problem is the same with three-point seat belts: when a passenger lies flat in the seat, it is unavoidable that the passenger's body will move significantly in the direction of travel during a frontal collision or sudden braking, even with a three-point seat belt. Depending on the position of the passenger lying down, there is a risk that the passenger's body may slip through the shoulder and lap belts of the three-point seat belt and be thrown out of the seat. What is more, if the passenger's body moves forward, the shoulder belt may get caught around the neck, causing a large impact to the neck and resulting in neck injury.

[0010] An auxiliary belt has been disclosed that extends from one armpit to the other in a seated position to prevent forward movement of the body in a frontal collision (International Publication No. 2023 / 065720, hereinafter referred to as "Patent Document 2"). This auxiliary belt has the same configuration as a conventional two-point seat belt, and is worn around the chest by passing the belt from one armpit to the other. The purpose of this auxiliary belt is to prevent forward movement of the body in a seated position in a frontal collision. Therefore, if this auxiliary belt is worn around the chest when the seat is flat and the occupant lies down, it is believed that safety in the lying position can be improved by using it in combination with a two-point or three-point seat belt worn around the waist.

[0011] However, when wearing this auxiliary belt in the lateral position, especially when wearing this auxiliary belt in the supine position, the body is restrained by the auxiliary belt in the supine position, which reduces comfort. Also, when restrained in the supine position, it becomes difficult to change position to the side.

[0012] In view of the above problems, the inventors of the present application have conducted extensive research to provide an auxiliary seat belt that, when the backrest of a seat in any vehicle, not limited to seats on long-distance overnight buses, is reclined to make the seat flat and the passenger lies down, will prevent the passenger's body from moving forward in the event of a frontal collision or sudden braking, thereby significantly improving safety in the lying position, and will also allow the passenger to turn over without compromising comfort in the lying position, and as a result they have arrived at the present invention. [Means for solving the problem]

[0013] In other words, the auxiliary seat belt of the present invention is a two-point auxiliary seat belt that is placed across the passenger's chest when the backrest of a vehicle seat is reclined and the seat is laid flat, and is composed of a pair of left and right side straps, a buckle attached to one end of one of the side straps, and a tongue plate attached to one end of the other side strap, and the other end of the one side strap and the other end of the other side strap are each supported and fixed at a position above the passenger's shoulder position on the back side of the passenger, and when the seat is laid flat, the one side strap and the other side strap are each passed under the passenger's armpit and fastened to the chest by the buckle and the tongue plate.

[0014] In addition, the auxiliary seat belt of the present invention is characterized in that the other end of the one side strap and the other end of the other side strap are supported and fixed to a head guard arranged on the backrest.

[0015] Furthermore, in the auxiliary seat belt of the present invention, the other end of the one side strap and the other end of the other side strap are supported and fixed to the side surface or the back surface of the backrest, respectively.

[0016] The auxiliary seat belt of the present invention is characterized in that both side surfaces of the backrest are provided with hooks capable of hooking the one side strap and the other side strap, respectively. [Effects of the Invention]

[0017] The auxiliary seat belt of the present invention can prevent the forward movement of the passenger's body in the event of a frontal collision or sudden braking when the backrest of the vehicle seat is reclined and the seat is made flat so that the passenger is lying down. Therefore, by using the auxiliary seat belt in combination with a conventional two-point seat belt or three-point seat belt, the safety of the passenger in the lying down position can be significantly improved.

[0018] Furthermore, unlike conventional auxiliary belts that are worn around the chest, the other end of one side strap and the other end of the other side strap of the auxiliary seat belt of the present invention are supported and fixed at positions above the shoulder position on the back side of the passenger, so that there is almost no feeling of restraint, comfort in the recumbent position is ensured, and an auxiliary seat belt that allows the passenger to roll over can be provided. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a side view showing a state in which an auxiliary seat belt according to an embodiment of the present invention is worn in a recumbent position. [Figure 2] FIG. 2 is a plan view of the state shown in FIG. [Figure 3] 1 is a side view showing a state in which an auxiliary seat belt according to an embodiment of the present invention is worn in a seated position. [Figure 4] 1 is a side view showing a state in which an auxiliary seat belt according to an embodiment of the present invention is unbuckled while the passenger is seated; [Figure 5]FIG. 10 is a side view showing a state in which an auxiliary seat belt according to another embodiment of the present invention is worn in a recumbent position. [Figure 6] FIG. 10 is a side view showing a state in which an auxiliary seat belt according to another embodiment of the present invention is unbuckled in a seated position. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, an embodiment of the auxiliary seat belt of the present invention will be described in detail with reference to the drawings. Fig. 1 is a side view showing a state in which an auxiliary seat belt 10 according to one embodiment of the present invention is worn in a recumbent position, and Fig. 2 is a plan view of the state shown in Fig. 1. As shown in these drawings, the auxiliary seat belt 10 of this embodiment is a two-point seat belt that is looped around the chest 32 of a passenger (= a dummy shown in the drawing) 30 when a backrest 22 of a vehicle seat 20 is reclined to lay flat on the seat 20.

[0021] The auxiliary seat belt 10 of this embodiment is a seat belt suitable for the seat structure disclosed by the inventors of the present application in Patent Document 1, etc., that is, a seat structure that stably and safely realizes a relaxed posture for more comfortable nighttime sleep. The seat 20 is a seat for a long-distance night bus developed by the inventors of the present application, and the seat 20 can be made flat by reclining the backrest 22.

[0022] The auxiliary seat belt 10 of this embodiment, which is arranged on this seat 20, is composed of a pair of left and right side straps 12, 14, a buckle 16 arranged at one end 12a of one of the side straps 12, and a tongue plate 18 arranged at one end 14a of the other side strap 14.

[0023] The auxiliary seat belt 10 of this embodiment is characterized in that the other end 12b of one side strap 12 and the other end 14b of the other side strap 14 are supported and fixed at positions above the shoulder position 34 on the back side of the passenger 30. In particular, the auxiliary seat belt 10 of this embodiment shown in Figures 1 and 2 is characterized in that the other end 12b of one side strap 12 and the other end 14b of the other side strap 14 are supported and fixed to the head guard 24 disposed on the backrest 22.

[0024] The auxiliary seat belt 10 of this embodiment, which has the above-mentioned configuration, is configured such that when the backrest 22 is reclined to make the seat 20 flat and the passenger 30 is lying down, one side strap 12 and the other side strap 14 are passed under the passenger's sides, respectively, and fastened to the chest 32 by the buckle 16 and tongue plate 18.

[0025] The auxiliary seat belt 10 of this embodiment worn by the passenger 30 in this manner can suppress forward movement of the passenger's body in the event of a frontal collision or sudden braking when the passenger 30 is lying down, which cannot be suppressed by a conventional two-point seat belt 40 or three-point seat belt worn around the waist 36 alone. Therefore, by using the auxiliary seat belt 10 in combination with a conventional two-point seat belt 40 or three-point seat belt, the safety of the passenger 30 in the lying down position can be significantly improved.

[0026] Furthermore, in the auxiliary seat belt 10 of this embodiment, the other end 12b of one side strap 12 and the other end 14b of the other side strap 14 are each supported and fixed at a position above the shoulder position 34 on the back side of the passenger 30. Therefore, unlike the auxiliary belt disclosed in Patent Document 2, there is almost no feeling of restraint, and an auxiliary seat belt 10 can be provided which ensures comfort in a recumbent position and also allows the passenger to roll over.

[0027] The auxiliary seat belt 10 of this embodiment can also be worn when the passenger 30 is seated in the seat 20. As shown in Fig. 3, by wearing the auxiliary seat belt 10 while the passenger 30 is seated in the seat 20, forward movement of the upper body of the passenger 30 in the event of a frontal collision or sudden braking can be suppressed compared to when only the two-point seat belt 40 is worn around the waist 36.

[0028] Furthermore, in the auxiliary seat belt 10 of this embodiment, the other end 12b of one side strap 12 and the other end 14b of the other side strap 14 are supported and fixed at positions above the shoulder position 34 on the back side of the passenger 30, so that the passenger feels almost no sense of restraint even when seated, and comfort in the seated position is not impaired.

[0029] The auxiliary seat belt 10 of this embodiment is arranged to prevent the forward movement of the passenger's body in the event of a frontal collision or sudden braking when the seat 20 is flattened and the passenger 30 is in a recumbent position. Therefore, the auxiliary seat belt 10 does not necessarily need to be fastened when the passenger is in a seated position. When the auxiliary seat belt 10 is not fastened (used) when the passenger is in a seated position, as shown in FIG. 4 , for example, by providing hooks 26 on both sides of the backrest 22, the one side strap 12 and the other side strap 14 can be hooked onto the hooks 26. The hooks 26 of this embodiment are L-shaped hooks into which the one side strap 12 and the other side strap 14 can be inserted, respectively, from the front side to the back side of the backrest 22. The one side strap 12 and the other side strap 14 can be easily fastened by simply inserting them.

[0030] In particular, by setting the width of the gap formed between the hook 26 and the side of the backrest 22 so that one side strap 12 and the other side strap 14 can be inserted but the buckle 16 and tongue plate 18 cannot pass through, even if the backrest 22 is reclined with one side strap 12 and the other side strap 14 inserted and hooked from the front side to the rear side of the backrest 22, the buckle 16 and tongue plate 18 will not get caught on the hook 26 and fall off downward, making it easier for a passenger 30 in a reclining position to fasten the auxiliary seat belt 10.

[0031] The form of the fastener according to the present invention is not limited to the form of the fastener 26 according to the above-described embodiment, and may be, for example, a form in which the buckle 16 and the tongue plate 18 are magnetically attached by a fastener composed of magnets arranged on both sides of the backrest 22, as long as it is possible to fasten the pair of left and right side straps 12, 14, respectively.

[0032] The auxiliary seat belt 10 according to one embodiment of the present invention has been described above. However, as another embodiment of the auxiliary seat belt of the present invention, an auxiliary seat belt 10a according to this embodiment shown in FIG. 5 has the same basic configuration as the auxiliary seat belt 10 according to the embodiment described above, but is characterized in that the other end 12b of one side strap 12 and the other end 14b of the other side strap 14 are each supported and fixed to the side of the backrest 22 located above the shoulder position 34 on the rear side of the passenger 30.

[0033] Even in a configuration in which the other end 12b of one side strap 12 and the other end 14b of the other side strap 14 are supported and fixed to the side of the seat back 22, as in the auxiliary seat belt 10a of this embodiment, if the positions at which the other ends 12b, 14b are supported and fixed are above the shoulder position 34 on the back side of the passenger 30, forward movement of the body of the passenger 30 in the event of a frontal collision or sudden braking can be suppressed when the passenger 30 is in a lying position, as in the auxiliary seat belt 10 of the above-described embodiment. Therefore, by using this in combination with a conventional two-point seat belt 40 or three-point seat belt, the safety of the passenger 30 in a lying position can be significantly improved.

[0034] Furthermore, unlike the auxiliary belt disclosed in Patent Document 2, the auxiliary seat belt 10a of the present embodiment provides an auxiliary seat belt 10a that causes almost no feeling of restraint, ensures comfort in the recumbent position, and also allows for turning over.

[0035] In the auxiliary seat belt 10a of this embodiment, the positions at which the other ends 12b, 14b of the one side strap 12 and the other side strap 14 are supported and fixed are not limited to the side of the backrest 22, but may be, for example, the back of the backrest 22, as long as they are above the shoulder position 34 on the back side of the passenger 30.

[0036] In addition, when the auxiliary seat belt 10a is not fastened (used) in the seated position, as shown in FIG. 6, by arranging a hook 26 on each side surface of the backrest 22, one side strap 12 and the other side strap 14 can be hooked onto the hook 26.

[0037] Although the embodiments of the auxiliary seat belt of the present invention have been described in detail above, the above embodiments should not be construed as substantially limiting the technical concept of the present invention. For example, the vehicle in which the auxiliary seat belt of the present invention is installed is not limited to long-distance overnight buses, but can also be installed in passenger seats and rear seats of ordinary vehicles, seats in airplanes, etc.

[0038] Furthermore, the auxiliary seat belts 10, 10a can be made retractable by providing a retracting device for retracting the pair of left and right side straps 12, 14 at the other ends 12b, 14b of the pair of left and right side straps 12, 14 of the auxiliary seat belts 10, 10a according to the embodiment of the present invention. However, in order to provide the auxiliary seat belts 10, 10a that hardly feel restrictive when worn, ensure comfort in a lying position, and allow for turning over, it is more preferable not to adopt a retractable type. The present invention can be implemented with appropriate improvements, modifications, and additions based on the ingenuity and ingenuity of those skilled in the art without departing from the spirit and scope of the present invention. [Explanation of symbols]

[0039] 10, 10a: Supplementary seat belt 12: One side strap 12a: One end of one side strap 12b: The other end of one side strap 14: The other side strap 14a: One end of the other side strap 14b: The other end of the other side strap 16: Buckle 18: Tongue plate 20: Sheet 22: Backrest 24: Head guard 26: Hook 30: Passenger (dummy) 32: Chest 34: Shoulder position 36: Lower back 40: Two-point seat belt

Claims

1. A two-point auxiliary seat belt that is placed across a passenger's chest when a backrest of a vehicle seat is reclined to make the seat flat, A pair of side straps on the left and right, a buckle disposed at one end of one of the side straps; a tongue plate disposed at one end of the other side strap; The invention comprises: The other end of the one side strap and the other end of the other side strap are supported and fixed at positions above the shoulder position on the back side of the passenger, When the seat is flattened, the one side strap and the other side strap are passed under the passenger's sides and fastened to the chest by the buckle and the tongue plate.

2. 2. The auxiliary seat belt according to claim 1, wherein the other end of the one side strap and the other end of the other side strap are supported and fixed to a head guard disposed on the backrest.

3. 2. The auxiliary seat belt according to claim 1, wherein the other end of the one side strap and the other end of the other side strap are supported and fixed to a side surface or a rear surface of the backrest, respectively.

4. 4. The auxiliary seat belt according to claim 1, wherein both side surfaces of the backrest are provided with hooks for hooking the one side strap and the other side strap, respectively.

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