JPH079641U - Vehicle seat - Google Patents

Abstract

(57) [Summary] [Purpose] An object of the present invention is to provide a vehicle seat that allows a person who uses a wheelchair and has weak arm strength to easily move to the vehicle seat. A seat cushion 10 of a vehicle seat is divided into a cushion moving portion 10a on which most of the weight of a seated person is applied and a cushion fixing portion 10b fixed to the floor of the vehicle. The cushion moving portion 10a is attached to the cushion fixing portion 10b by parallel links 12, 13, 14, 15 provided on the lower portion thereof, and the parallel link 12 is operated by operating a driving means utilizing the rotation of the motor 33. , 13, 14, 15 are deformed to move the cushion moving portion 10a in parallel to the boarding / alighting side. When the seated person sits on the moved cushion moving portion 10a, the cushion moving portion 10a is returned to the original position in the vehicle while the seated person is placed on the cushion moving portion 10a.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle seat that is convenient when a seated person in a wheelchair transfers to a seat such as a passenger car.

[0002]

[Prior art]

 When a person sitting in a wheelchair tries to transfer to a passenger car, he or she usually puts his / her hand on the vehicle seat and the door and hangs his / her body to the vehicle seat side.

[0003]

[Problems to be solved by the device]

 However, in order to move the vehicle seat so that it hangs between the door and the door, it is necessary to have sufficient arm force to support the body, and for a person with weak arm force, it is not possible to move the seat. It was very difficult.

Therefore, an object of the present invention is to provide a vehicle seat that allows a person with weak arm strength to easily move to the vehicle.

[0005]

[Means for Solving the Problems]

 According to the present invention, in a vehicle seat including a seat cushion and a seat back, the seat cushion is divided into a cushion moving part including at least a main part and a cushion fixing part, and the cushion moving part is on a boarding side of the vehicle seat. It is characterized in that it is provided with a support mechanism and a driving means for the cushion moving section that moves while maintaining a horizontal state.

[0006]

[Operation and effect of the device]

 When a occupant of a wheelchair tries to get into a vehicle using the vehicle seat configured as described above, first, at least the main portion of the seat cushion between the seat and the door, which is the entry / exit side of the vehicle seat. The cushion moving part including the parts is translated. Then, after the seated person in the wheelchair sits on the cushion moving section, the cushion moving section moves while keeping the seated person in a horizontal state and returns to the original position of the vehicle seat. You can transfer from a wheelchair to a vehicle. Therefore, in the conventional vehicle seat, the seated person was forced to hang between the seat and the door, but the vehicle seat of the present invention does not need to do so, and the arm strength is weak. Even a person can easily transfer from a wheelchair to a vehicle. Also, it is effective for the caregiver to allow the seated person to sit on the seat cushion that has been moved to the side of the vehicle seat, in order to reduce the labor of the caregiver.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a vehicle seat according to a first embodiment of the present invention as seen from a boarding / alighting side, and FIG. 2 is a seat cushion of the vehicle seat shown in FIG. 1 lifted up. It is a perspective view of a case. The vehicle seat comprises a seat cushion 10 and a seat back 11, and the seat cushion 10 is divided into a main part on which most of the weight of the seated person is applied and side parts on the left and right sides. The seat cushion 10 of this embodiment has a cushion moving portion 10a in which a main portion and a side portion on the entry / exit side integrally move, and a cushion fixing portion integrally fixed to the vehicle side and having a side portion on the opposite entry / exit side. And 10b.

FIGS. 3 and 4 are front views of FIGS. 1 and 2, respectively, and FIG. 5 is an exploded perspective view of the vehicle seat. The cushion moving portion 10a is attached to the cushion fixing portion 10b by a parallel link mechanism which is a support mechanism. This parallel link mechanism is composed of four links 12, 13, 14, and 15, one end of each of the right links 12 and 13 is fixed to the right shaft 16, and the other end of each is a cushion moving part. It is rotatably attached to upper brackets 18 and 19 fixed to 10a using stepped bolts 20 and 21. Similarly, the links 14 and 15 on the left side are rotatably attached to the upper brackets 22 and 23, one end of which is fixed to the shaft 17 of the left side and the other end of which is fixed to the cushion moving portion 10a, by stepped bolts 24 and 25. It is being done. The shafts 16 and 17 have their lower end brackets 26, 27, 28 and 29 fixed to the cushion fixing portion 10b installed on the vehicle side, and their tips are pivotally attached to the holes so that they do not come off the holes. It is stopped by the ring ER. The lower brackets 26, 27, 28 and 29 are attached to the upper surfaces of the plates 30 and 31 which are laterally bridged in front of and behind the seat track 10C forming a part of the cushion fixing portion 10b. ing.

As a driving means for moving the parallel link mechanism, a sector gear 32 is provided at an intermediate portion of the shaft 17, and a pinion gear 34 is provided at a protruding tip of a rotation shaft of a motor 33 provided on a bracket 38 of the cushion fixing portion 10b. Are fixed, and both gears 32, 34 are arranged in meshing positions so that both gears 32, 34 are driven according to the rotation of the rotation shaft of the motor 33.

A cover 35 is provided on the side surface of the seat cushion 10 so as to hide the parallel link mechanism and the driving means for moving the mechanism so as not to spoil the appearance of the side surface of the vehicle seat. The cover 35 has links 14 and 15 so that when the cushion moving unit 10a is lifted up, the links 14 and 15 can sufficiently rotate to the boarding / alighting side beyond the sides of the vehicle seat. The slits 36 and 37 that can be fitted are formed (see FIGS. 1 and 2).

In the seat cushion 10 of the vehicle seat configured as described above, when the occupant of the wheelchair tries to transfer to the vehicle, first, a switch (not shown) for rotating the motor 33 is turned on. The pinion gear 34 attached to the rotating shaft of the motor 33 is rotated counterclockwise as indicated by arrow A, and the sector gear 32 and the shaft 17 meshing with the pinion gear 34 are integrally rotated clockwise as indicated by arrow B. Then, since the shaft 17 and the links 14 and 15 are fixed to each other, the parallel link mechanism composed of the links 12, 13, 14, and 15 rotates in the direction of lifting the cushion moving portion 10 a as the shaft 17 rotates. Then, the cushion moving unit 10a moves to the entry / exit side of the vehicle seat while maintaining a horizontal state. Therefore, the seated person in the wheelchair can easily sit on the cushion movement unit 10a that has moved.

Then, after the seated person sits on the cushion moving portion 10a, the switch for actuating the motor 33 is operated to rotate the motor 33 in the direction opposite to that described above, and the pinion gear 34 is moved to the arrow direction. The sector gear 32 and the shaft 17 are rotated in the direction indicated by arrow B, and at the same time, the sector gear 32 and the shaft 17 are rotated in the direction indicated by arrow A. As a result, the cushion moving unit 10a moves while maintaining the seated person in a horizontal state so as to return to the original position of the vehicle seat by the support of the parallel link mechanism. In this way, the seated person can transfer from the wheelchair to the vehicle.

FIG. 6 shows another embodiment of the driving means for moving the parallel link mechanism including the links 12, 13, 14, and 15. This driving means is attached to the cushion nut 10b, the screw nut mechanism provided in the middle portion of the shaft 17, the link a and the link b for converting the slide of the nut 40 on the screw 41 into the rotation of the shaft 17, and the cushion fixing portion 10b. And a rotation driving means of the screw 41 fixed to the bracket 42. One end of the link a is rotatably assembled to both ends of a nut 40 that slides on the screw 41, and the other end is rotatably connected to the tip of a link b whose one end is fixed to the shaft 17. Has been done. Further, the rotation driving means of the screw 41 includes a motor 43 and a gear box 44 that reduces the rotation of the rotation shaft of the motor 43 and transmits the rotation to the rotation of the screw 41. Further, stoppers 45 and 46 are provided on the screw 41 for the purpose of regulating the sliding range of the nut 40.

In the seat cushion using the driving means for moving the parallel link mechanism as shown in FIG. 6, when the seated person of the wheelchair tries to transfer to the seat cushion 10 in the state shown in FIG. 7A. First, the switch (not shown) for rotating the motor 43 is turned on to operate the motor 43, and the rotation of the rotation shaft is converted into the rotation of the screw 41 in the gear box 44, so that the screw 41 is rotated. Slide the upper nut 40 toward the stopper 45. As a result, the link a and the link b rotate, the shaft 17 rotates in the direction indicated by the arrow B, and the parallel link mechanism moves in the direction of lifting the cushion moving portion 10a as shown in FIG. 7B. A seated person in a wheelchair can easily sit on the cushion moving portion 10a thus moved.

Then, after the seated person sits on the cushion moving section 10a, the switch for activating the motor 43 is operated to rotate the motor 43 in the opposite direction to the one described above to rotate the screw 41 in the reverse direction. When the nut 40 is slid in the direction of the stopper 46, the shaft 17 rotates in the direction indicated by the arrow A, so that the cushion moving portion 10a supports the parallel link mechanism while the seated occupant remains on the seat. Return to the original position. In this way, the seated person can transfer from the wheelchair to the vehicle.

Therefore, in the conventional vehicle seat, the seated person is forced to hang between the seat and the door, but the vehicle seat of the present invention does not need to do so, and a person with weak arm strength is required. Even in this case, the cushion moving unit 10a can be moved by a simple operation to easily transfer from the wheelchair to the vehicle. Also for the caregiver, it is effective that the seated person can be seated on the cushion moving part 10a that has been moved to the side part of the vehicle seat, in that the labor of the caregiver can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a vehicle seat, which is a first embodiment of the present invention, as seen from a boarding / alighting side.

FIG. 2 is a perspective view when the seat cushion of the vehicle seat shown in FIG. 1 is lifted up.

3 is a front view of the vehicle seat shown in FIG. 1. FIG.

4 is a front view of the vehicle seat shown in FIG. 2. FIG.

5 is an exploded perspective view of the vehicle seat shown in FIGS. 1 to 4. FIG.

FIG. 6 is a perspective view of a driving means of the parallel link mechanism according to the second embodiment of the present invention.

7A and 7B are side views for explaining the operation of the seat cushion using the driving means of the parallel link mechanism shown in FIG. 6, where FIG. 7A is a normal state and FIG. It is a figure at the time of uploading.

[Explanation of symbols]

10 ... Seat cushion, 10a ... Cushion moving part,
10b ... Cushion fixing part, 12, 13, 14, 15 ...
Links, 16, 17 ... Shafts, 18, 19, 22, 2
3 ... Upper bracket, 20, 21, 24, 25 ... Stepped bolt, 26, 27, 28, 29 ... Lower bracket, 32
… Sector gears, 33… motors, 34… pinion gears,
35 ... Cover, 40 ... Nut, 41 ... Screw, 43
… Motor, 44… Gearbox, 45, 46… Stoppers.

Claims (1)

[Scope of utility model registration request] 1. A vehicle seat comprising a seat cushion and a seat back, wherein the seat cushion is divided into a cushion moving portion including at least a main portion, and a cushion fixing portion, and the cushion moving portion is on a boarding side of the vehicle seat. A vehicle seat, characterized in that a support mechanism for a cushion moving section for moving the vehicle while maintaining a horizontal state and a driving means are provided.