JP4421585B2 - Seat seating assist device - Google Patents

Description

  The present invention relates to a seat seating assisting device for holding a seated person on a seat in a safe seating posture.

For example, a vehicle seat is equipped with a seat belt that holds the knees of a seated occupant and that hangs diagonally from one shoulder to the other waist for the purpose of ensuring safety in the event of a collision. .
Thus, even when the vehicle collides with an obstacle in front of the vehicle, the passenger is prevented from being thrown out of the seat.
JP 2005-161955 A

By the way, the above-mentioned vehicle seat belt needs to satisfy the condition that there is no hindrance to the driving operation, and therefore has a minimum function for securing the occupant to the seat when a large external force such as a collision is applied. Absent.
However, even in a vehicle, for example, when a normal seat belt cannot be used due to the physical condition of the occupant, there is no other means for protecting the occupant. Or, if a cared person who cannot support his / her posture is put on the vehicle, even if he / she is using a normal seat belt, the cared person will be affected by vibration during driving and centrifugal force when turning The person's upper body may fall down and come off the seat back (back), and the head may be struck against the side wall of the passenger compartment.
For such a phenomenon, a conventional vehicle seat belt that does not have a function of restricting the movement of the upper body in the left-right direction cannot effectively maintain the posture of the occupant.
Similar problems occur not only in vehicle seats but also in various mobile seats, wheelchairs and nursing beds with a backrest.

  In view of the above problems, an object of the present invention is therefore to provide a seat seating assisting device that can properly maintain the posture of a seated person, and in particular prevents the upper body from tilting left and right.

  For this reason, in the present invention, a belt is provided that is supported at a position higher than the neck of the seated person seated on the seat, and is disposed so as to extend downward on the left and right sides of the seated person's head from the support position. Each ring has a ring shape folded at the lower end, and each arm of the seated person is passed through each belt so that the side of the seated person is held in the lifting direction.

Even if the upper body of a seated person on the seat is about to fall down, the belt holds the both sides of the seated person in a direction that lifts them up to a high support point, making it difficult for the seated person to effectively hold his / her posture, for example. Even the cared person has an effect that the posture can be properly maintained and the upper body can be prevented from falling.
In the present invention, the seat includes a wheelchair or a bed on which a person is seated.

Hereinafter, embodiments of the present invention will be described in detail.
FIG. 1A is a side view showing a use state of an embodiment applied to a vehicle seat, and FIG. 1B is a front view thereof.
The seat 1 includes a seat cushion 2, a seat back 3 that is inclined at a predetermined angle from the rear end of the seat cushion, and a headrest attached to the upper end of the seat back via stays 5 and 5 (see FIGS. 3 and 10). It consists of ten.
Two sets of belts 20 and 20 are attached to the headrest 10 for holding both sides of the seated person M seated on the seat.

2 is a perspective view of the belts 20 and 20 attached to the headrest 10 as viewed from diagonally forward, FIG. 3 is a perspective view of the headrest 10 as seen through, and FIG. 4 is a perspective view of the headrest 10 as viewed from diagonally rear.
Each belt 20 includes a buckle 22 that can be fastened and released, and when the buckle 22 is coupled, the belt 20 has a ring shape that is folded at both ends. Then, as shown in FIG. 4 in particular, the belt 20 is wound around one end of the belt 20 around the stay 5 and pulled out rearward, and passes through the upper part of the headrest 10 as shown in FIGS. The folded portion is hung from the front surface of the headrest 10 to the front surface of the seat back 3.

Each belt 20 is guided by a belt holder 30 attached to the headrest 10 so as to hang down on both the left and right sides of the head of the seated person M.
FIG. 5 is a view showing only the belt holder 30 with the belts 20 and 20 removed.
The belt holder 30 includes a front member 32 extending in the lateral direction (left-right direction) on the upper surface of the headrest 10 and a rear member 34 extending in the lateral direction on the rear surface of the headrest 10 by connecting members 36 and 36 extending in the front-rear direction. is there.

Both ends of the front member 32 and both ends of the rear member 34 are bent along the surface of the headrest 10 and extend on the left and right end faces of the headrest. Since the upper surface and the rear surface of the headrest 10 have an angle with each other, the rear member 34 intersects with the front member 32 on the end surface and is connected by sewing.
A left lower member 40a and a right lower member 40b each having a predetermined length extend downward from the connecting portion 38 of the front member 32 and the rear member 34 at the headrest end surface position.
The left lower member 40 a and the right lower member 40 b are pulled to the lower surface side of the headrest 10 and are connected to each other by a fastener 48. The fastener 48 can adjust the relative holding position with respect to the left and right lower members, that is, the total length of the left lower member and the right lower member in the connected state can be adjusted.

As a result, the belt holder 30 is attached by pressing the headrest 10 from three directions with the front member 32, the rear member 34, and the lower member 40 (the left lower member 40a and the right lower member 40b), and the movement in the lateral direction is also restricted to the headrest 10. Fixed.
The front member 32, the rear member 34, and the lower member 40 are all narrower than the belt 20, but the same material as that of the belt 20 and easily adaptable to the shape of the headrest 10 is selected.

  The front member 32 is provided with a belt guide. Here, a short pressing member 42 made of the same material as the front member 32 is sewn on the front member 32 leaving two predetermined ranges on the left and right sides, and the predetermined range that cannot be sewn is pressed against the front member 32. The slits 44 and 44 are belt guides formed between the members 42.

  As described above, after the belt 20 is wound around one end of the stay 5 and pulled out rearward, as shown in FIG. 6 which is a perspective view looking down obliquely from the rear, the rear member 34 of the belt holder 30 and the headrest 10 Passing between the inside of the left and right connecting members 36, 36, it passes over the connecting member, passes through the slits 44, 44 between the front member 32 and the pressing member 42, and toward the front side of the headrest 10. Get out.

  As shown in FIGS. 1, 2, etc., cylindrical shock-absorbing members 46, 46 made of, for example, urethane foam are covered on the portion of the belt 20 that hangs down on the front surface of the seat back 3. The range where each buffer member 46 is covered is a range where the arm of the seated person M is passed through the ring of the belt 20 including the folded-back portion, that is, from the back side to the front side.

The belt 20 has two belts overlapped and penetrated through the slit 44 of the belt guide. After the slit 44 comes out to the front side of the seat back 3, it becomes the front side, not the back side of the seated person M. The aforementioned buckle 22 is provided on the side so that the seated person or the caregiver can easily operate.
Further, the seat seating assisting device configured as described above can be installed in a vehicle in combination with a conventional seat belt for ensuring safety in the event of a collision.

  The seat seating assisting device according to the embodiment is configured as described above, and is supported at a position higher than the neck of the seated person M seated on the seat 1 via the upper surface of the headrest 10, and the left and right sides of the head. The belts 20 and 20 are arranged so as to extend downward, and each belt is formed in a ring shape folded back at the lower end. By passing each arm of the seated person M through each belt, the side of the seated person M is placed. Since the belt 20 is held in the lifting direction, the belt 20 is high on both sides of the seated person M even if the upper body is about to fall down due to external force such as vibration during traveling of the vehicle or centrifugal force when the direction is changed. Since it is supported in the direction of lifting to the support point of the position, even if the seated person M is a cared person who is difficult to hold his / her posture effectively, for example, the posture of the upper body can be collapsed by properly holding the posture. To block It has the effect that it is.

Further, when the seat is the driver's seat, the posture does not collapse, so that safe driving can be performed by concentrating attention forward.
In particular, since the belt is supported by the headrest that supports the head, the belt lifts both sides in the vicinity of the head of the seated person M in the normal posture, so that it can be held in the normal posture without any significant blurring.

And since the buffer member 46 is covered on the part of the belt 20 that contacts the side of the seated person M, a large local force is exerted on the side of the seated person to prevent the body from collapsing. There is nothing.
Further, since the belt 20 is provided with a buckle 22 that can be fastened and released, if the arm of the cared person is inconvenient, the buckle 22 can be attached without passing it through the belt with the arm in a ring shape. After the belt 20 in the released state is passed through the armpit, the belt 20 is fastened into a ring shape so that the armpit can be lifted. Further, when getting off the vehicle, the belt 20 is immediately released by releasing the buckle 22.

  The belt 20 is wound around one end of the stay 5 of the headrest 10 and then hung down to the front side of the headrest 10 via the upper surface of the headrest 10, while the belt holder 30 guides the passing position of the belt 20. Is fixed to the headrest 10, so that it can be easily retrofitted to a seat of an existing vehicle.

The belt holder is not limited to the one described above.
Next, one modification is shown. FIG. 7 is a perspective view of the belt holder of the modified example as viewed from diagonally forward together with the belt, and FIG. 8 is a perspective view of the modified example as viewed from diagonally rear.
Similar to the belt holder 30, the belt holder 30 </ b> A includes a front member 32 and a lower member 40 (40 a, 40 b), and a pressing member 42 that forms slits 44, 44 as belt guides is sewn on the front member 32. ing.
However, in this modified example, instead of sewing both ends of the rear member 34 to the front member 32 on the left and right end faces of the headrest, fasteners 50 are attached to the front member 32 of the connecting portion. Both ends are connected to the front member 32 by the fasteners 50 respectively.

Further, the connecting member 36A connecting the front member 32 and the rear member 34A is different from the two connecting members 36, 36 parallel to each other of the belt holder 30, with the intermediate portion hung on the intermediate portion of the rear member 34A and the both ends. Is fixed to the front member 32 by being pulled out from the slits 44, 44 at the outer side in the left-right direction.
As described above, the belt 20 passes between the rear member 34 </ b> A and the headrest 10 from the rear surface side of the headrest 10, passes through the slits 44 and 44 between the front member 32 and the pressing member 42, and exits to the front surface side of the headrest 10. .
Similarly to the fastener 48, the fastener 50 can also adjust the relative holding position with respect to the rear member 34A, that is, the total length of the rear member 34A in the connected state.
Other configurations are the same as those described in the embodiment.

  According to the belt holder 30A of this modified example, both ends of the rear member 34A are connected to the front member 32 via the fastener 50. Therefore, adjustment is possible even if the size and shape of the headrest 10 differs depending on the vehicle. Correspondingly, there is an advantage that the headrest 10 is securely fixed.

As still another modified example, the belt holder includes a front member 32, a rear member 34 (34A) and a lower member 40 as main elements, and the front member 32 is a short member, and a holding member is formed with slits 44, 44 thereon. It is also possible to change the belt guide unit 42 to 42 and sew it directly to the headrest 10.
Thereby, it is possible to provide a belt holder with a particularly simple structure composed of only the belt guide unit.

In addition, although embodiment described the example applied to the vehicle seat which has the seat back 3 to which the headrest 10 was attached, this invention is not limited to this, A wheelchair, a care bed, other various mobile bodies, etc. Can be applied to.
One end of the belt 20 is wrapped around the stay 5 of the headrest 10, and the belt holder 30 is formed of the same material as the belt and guides the belt. Various forms such as hanging a belt from the upper part of the backrest corresponding to the seat back 3 according to the characteristics of the object can be used.
Further, although the buffer member 46 to be put on the belt 20 is cylindrical, this shape is not particularly limited, and may be in accordance with the cross-sectional shape of the belt.

It is a figure which shows the use condition of embodiment. It is the perspective view which looked down on embodiment from diagonally forward. It is a perspective view of an embodiment showing through a headrest. It is the perspective view which looked up embodiment from diagonally backward. It is a figure which shows a belt holder. It is the perspective view which looked down at embodiment from diagonally backward. It is the perspective view which looked down at the modification of the belt holder from diagonally forward. It is the perspective view which looked down at the modification from diagonally backward.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seat 2 Seat cushion 3 Seat back 5 Stay 10 Headrest 20 Belt 22 Buckle 30, 30A Belt holder 32 Front member 34, 34A Rear member 36, 36A Connection member 38 Connection part 40a Left lower member 40b Right lower member 48 Fastener 42 Holding member 44 Slit ( Belt guide)
46 cushioning member 50 fastener M seated person

Claims (5)

A belt that is supported at a position higher than the neck of the seated person seated on the seat and is arranged to extend downward from the support position on both the left and right sides of the seated person's head;
The belts are each ring-shaped folded at the lower end,
A seat seating assisting device, wherein each arm of a seated person is passed through each belt so that the side of the seated person is held in the lifting direction.   2. The seat seating assisting device according to claim 1, wherein a cushioning member is placed on a portion of the belt that contacts the side of the seated person. The seat has a seat back with a headrest attached to the upper end,
The seat seating assisting device according to claim 1, wherein the belt is supported by the headrest. The headrest is attached to the seat back via a stay,
The belt wraps one end around the stay and extends to the front side of the headrest where the head of the seated person is located via the upper surface of the headrest.
The seat seating assisting device according to claim 3, further comprising: a belt holder that includes a belt guide that regulates a passing position of the belt and is fixed to the headrest.   The seat seating assisting device according to any one of claims 1 to 4, wherein the belt includes a buckle that can be fastened and released at a portion that extends downward on the left and right sides of the head of the seated person. .

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