JP2006006614A - Welfare vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a steering handle from becoming obstructive at the time of moving a driver's seat and assisting the get-on and get-off of a driver. <P>SOLUTION: In a welfare vehicle driven by the driver with disabled lower limbs, the driver's seat 11 is movable between a normal position at which it faces the steering handle 17 inside the vehicle and a get-on / get-off position at which it facilitates the get-on and get-off of the driver by being projected to the outside of the vehicle and getting close to a road surface. The steering handle 17 can be withdrawn from the normal position to a withdrawn position at which it is sprung up to the front upper part of a vehicle body. Since the steering handle 17 is automatically moved to the withdrawn position when the driver's seat 11 is separated from the normal position to the get-on / get-off position, when the driver gets on and off the vehicle by sitting on the moving driver's seat 11, the driver is prevented from interfering with the steering handle 17 and considering it as obstructive. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a welfare vehicle in which a driver's seat can move between a normal position facing a steering wheel in a vehicle and a boarding / exiting position that makes it easy for a driver to get on and off by overhanging the vehicle and approaching a road surface.

To make it easier for people with disabilities in the lower limbs, elderly people with weak physical strength, etc. to get on and off the vehicle seat, the front passenger seat was moved 90 ° toward the side of the vehicle after moving it forward. Japanese Patent Application Laid-Open No. 2004-151867 discloses that the door is extended from the opening in which the door is opened to the outside and is lowered, and the person is seated on the passenger seat and moved into the vehicle in the reverse procedure.
JP 2004-74865 A

  By the way, when a person with a disability in the lower limb drives the vehicle, it is conceivable to apply the technique described in Patent Document 1 to the driver's seat, but there is a steering handle in front of the driver's seat. Therefore, when the driver's seat on which the driver is seated is moved in the longitudinal direction of the vehicle, or when rotating between a position facing the front of the vehicle and a position facing the side of the vehicle, the driver's seat is seated on the driver's seat. There is a possibility that the driver and the steering wheel interfere with each other, and the driver can get in and out smoothly.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent a steering handle from becoming an obstacle when a driver's seat is moved to assist a driver to get on and off.

  In order to achieve the above object, according to the first aspect of the present invention, the driver's seat can easily get on and off by driving the driver's seat to the normal position facing the steering wheel in the vehicle and coming out of the vehicle and approaching the road surface. It is a welfare vehicle that can move between the boarding position and the boarding position, and the steering handle can be retracted to the upper front of the vehicle body, and when the driver's seat is away from the normal position toward the boarding / alighting position, the steering wheel is automatically A welfare vehicle characterized in that it is evacuated is proposed.

  According to the invention described in claim 2, in addition to the configuration of claim 1, the wheelchair lifter for loading and unloading the wheelchair with the road surface is disposed between the driver seat and the rear seat. A characteristic welfare vehicle is proposed.

  According to the invention described in claim 3, in addition to the structure of claim 2, the front door on the side of the driver's seat slides forward and opens, and the rear door behind the driver's seat moves backward. A welfare vehicle characterized by sliding and opening is proposed.

  According to the invention described in claim 4, in addition to the configuration of any one of claims 1 to 3, the driver who is seated on the driver's seat has the operation handle for operating the brake and the accelerator. A welfare vehicle characterized in that it is provided at a position where it can be operated is proposed.

  According to the configuration of the first aspect, when the movable driver's seat extends away from the normal position facing the steering handle and moves toward the boarding / exiting position approaching the road surface, the steering handle is automatically moved upward in front of the vehicle body. Therefore, when the driver sits on a movable driver's seat and gets on and off the vehicle, the driver can be prevented from interfering with the steering handle.

  According to the configuration of claim 2, since the wheelchair lifter that loads and unloads the wheelchair between the road surface is disposed between the driver seat and the rear seat, the distance between the driver seat and the wheelchair lifter approaches, It becomes possible for the driver who has transferred from the wheelchair to the driver's seat protruding outside the vehicle to transfer the wheelchair to the wheelchair lifter in the same posture, and the work of loading the wheelchair into the vehicle becomes easy.

  According to the configuration of claim 3, the front door on the side of the driver's seat slides forward and opens, and the rear door behind the driver's seat slides and opens rearward. The front door and rear door do not get in the way when the driver gets on and off the seat and when the wheelchair is loaded onto and unloaded from the wheelchair lifter. In particular, since the opened front door and rear door are not interposed between the driver's seat and the wheelchair lifter, it is easier to transfer the wheelchair to the wheelchair lifter while the driver is seated on the driver's seat.

  According to the fourth aspect of the present invention, since the operation handle is provided at a position where the driver seated on the driver's seat can operate by hand, the driver who has a disability in the lower limb himself performs the brake operation and the accelerator operation to drive the vehicle. It becomes possible to do.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on examples of the present invention shown in the accompanying drawings.

  1 to 18 show an embodiment of the present invention. FIG. 1 is an overall perspective view of a welfare vehicle, FIG. 2 is a view in the direction of arrows 2 in FIG. 1, and FIG. FIG. 4 is a view taken along line 4-4 in FIG. 3, FIG. 5 is an enlarged view of part 5 in FIG. 4, FIG. 6 is an explanatory diagram of the action during rotation of the seat, and FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 7, FIG. 9 is an explanatory diagram of the operation when the sheet is extended one step, FIG. 10 is an explanatory diagram of the operation when the sheet is extended two steps, and FIG. 12 is an arrow sectional view taken along line 12-12 in FIG. 2, FIG. 13 is an enlarged sectional view taken along line 13-13 in FIG. 12, FIG. 14 is an enlarged sectional view taken along line 14-14 in FIG. Action explanatory drawing at the time of loading of a wheelchair, Drawing 16-Drawing 18 are figures showing the procedure of boarding of a driver, and loading of a wheelchair.

  As shown in FIG. 1 to FIG. 3, the vehicle V of this embodiment can be driven by a driver who has a disability in the lower limbs and is using a wheelchair by getting on and off the driver's seat easily from the wheelchair. And a wheelchair can be mounted in the space behind the seat of the driver's seat.

  The one-box type vehicle V includes a driver seat 11 located on the right side of the vehicle body, a passenger seat 12 located on the left side of the vehicle body, and a rear seat 13 located on the rear of the vehicle body. The left and right front doors 14L and 14R are sliding doors that open toward the front of the vehicle body, and the left and right rear doors 15L and 15R are sliding doors that open toward the rear of the vehicle body. At this time, no center pillar is provided between the front doors 14L, 14R and the rear doors 15L, 15R. When the front doors 14L, 14R and the rear doors 15L, 15R are opened back and forth, a wide opening is formed on the side of the vehicle body. Is to be formed.

  A steering wheel 17 is provided on the dashboard 16 in front of the driver's seat 11, and the steering wheel 17 is in a normal position (shown by a solid line in FIGS. 2 and 3) and a retracted position (see FIG. And an actuator (not shown). In addition, the dashboard 16 on the left side of the steering handle 17 is provided with an operation handle 18 for performing an accelerator operation and a brake operation at a position where the left hand of the driver can reach. You can drive.

  Further, the driver's seat 11 can be projected and lowered by the seat moving mechanism 19 and the wheelchair 21 is loaded and unloaded by the wheelchair lifter 20 provided between the driver's seat 11 and the rear seat 13. Therefore, it is easy for the disabled driver to get on and off the driver's seat 11 from the wheelchair 21 and to load the wheelchair 21 into the vehicle.

  Next, the structure of the sheet moving mechanism 19 will be described with reference to FIGS. In the description of the structure of the seat moving mechanism 19, the driver's seat 11 rotates through 90 ° between a position facing the front of the vehicle body and a position facing the right side of the vehicle body. It is defined on the basis of the driver seated on the driver seat 11.

  A pair of left and right slide rails 33, 33 are fixed in the longitudinal direction of the vehicle body to a fixed base 32 provided on the upper surface of the vehicle body floor 31, and a slide base 34 supported by the slide rails 33, 33 is a motor (not shown). Can be moved in the longitudinal direction of the vehicle body. A ring gear 38 is rotatably supported on the inner periphery of an annular guide member 36 fixed to the upper surface of the slide base 34 via a ball bearing 37, and the rotation base 39 is fixed to the upper surface of the ring gear 38. A pinion 41 that is rotated by a motor 40 provided on the slide base 34 is meshed with the ring gear 38. Accordingly, when the motor 40 is driven, the rotation base 39 is rotated via the pinion 41 and the ring gear 38, and the driver seat 11 is It can be rotated through 90 ° between a position facing the front of the vehicle body and a position facing the right side of the vehicle body.

  The left and right side edges of the rotation base 39 are bent upward to form a pair of first guide rails 39a, 39a. The pair of second guide rails 39b, 39a, 39a extends in the front-rear direction. 39b is provided in the front-rear direction. The rear slide member 42 is supported along the rotation base 39 so as to be movable back and forth. Two guide rollers 43, 43 are pivotally supported by a pair of first brackets 42 a, 42 a provided on the lower surface of the rear slide member 42, and these guide rollers 43. 2 Guided by the guide rails 39b and 39b. A ball screw mechanism 45 that is operated by a motor 44 (see FIG. 7) provided at the rear end of the rotation base 39 is connected to the rear slide member 42, and accordingly, the rear portion is driven via the ball screw mechanism 45 by driving the motor 44. The slide member 42 moves in the front-rear direction with respect to the rotation base 39.

  The rear ends of the outer link 46 and the inner link 47 are pivotally supported by fulcrum pins 48 and 49 on second brackets 42b and 42 in which the left and right side edges of the rear slide member 42 are bent downward, respectively. The outer link 46 is disposed on the outer side in the left-right direction of the second bracket 42b, and the inner link 47 is disposed on the inner side in the left-right direction of the second bracket 42b. Even if the outer link 46 and the inner link 47 overlap each other, they do not interfere with each other. It is like that. A guide roller 50 is pivotally supported at a position near the fulcrum pin 48 of the outer link 46, and the guide roller 50 is guided along the upper edge of the first guide rail 39 a of the rotation base 39.

  At the front end of the first guide rail 39a of the rotation base 39, the rear end of the swinging guide rail 51 formed in a “H” shape is pivotally supported by a fulcrum pin 52, and a torsion spring 53 is shown by a solid line in FIG. Biased to position. When the guide roller 50 guided forward along the upper edge of the first guide rail 39a of the rotation base 39 is transferred from the front end of the first guide rail 39a to the swing guide rail 51, the weight of the swing guide rail 51 is increased. Swings downward around the fulcrum pin 52 to the position of the chain line in FIG.

  The front ends of the outer links 46, 46 and the front ends of the inner links 47, 47 are respectively provided on the outer and inner surfaces of a pair of brackets 54a, 54a in which the left and right ends of the front slide member 54 are bent downward; It is pivotally supported via 56,56. Therefore, the rear slide member 42, the front slide member 54, the outer links 46 and 46, and the inner links 47 and 47 constitute a four-bar parallel link mechanism.

  Three guide rollers 57 are respectively pivotally supported on the left and right brackets 54a, 54a of the front slide member 54, and hang down from both left and right edges of the seat base 58 that supports the lower surface of the seat cushion of the driver's seat 11. The guide rollers 57 provided on the front slide member 54 engage with guide rails 60 provided on the inner surfaces of the left and right side plates 59. A ball screw mechanism 62 operated by a motor 61 provided at the front end of the seat base 58 is connected to the front slide member 54. When the motor 61 is driven to operate the ball screw mechanism 62, The seat base 58 moves back and forth together with the driver seat 11.

  Next, the structure of the wheelchair lifter 20 will be described with reference to FIGS.

  A pair of guide rails 71, 71 extending in the left-right direction of the vehicle body is laid on the vehicle body floor 31 between the driver seat 11 and the rear seat 13, and the slider 72 slides along these guide rails 71, 71. It is supported freely. A male screw member 75 having a base end connected to a motor 73 provided on the vehicle body floor 31 and having a tip end rotatably supported by a bearing 74 is disposed between the pair of guide rails 71, 71. The slider 72 to be screwed is guided by the guide rails 71 and 71 and can move in the left-right direction of the vehicle body.

  An arc-shaped arm 77, one end of which is pivotally supported by a slider 72 with a fulcrum pin 76, extends in the left-right direction of the vehicle body. Two guide shafts 78, 78 projecting in the left-right direction from the tip of the arm 77 are connected to a guide rail 71, A pair of rollers 79, 79 that roll on 71 and stoppers 81, 81; 82, 82 for positioning the left and right wheels 80, 80 of the wheelchair 21 are provided. Further, a support member 83 having a “U” -shaped cross section is provided on the upper surface of the intermediate portion of the arm 77, and a locking bar 85 for locking the left and right auxiliary wheels 84, 84 of the wheelchair 21 is spanned between the upper ends thereof. It is.

  Next, the operation of the embodiment having the above-described configuration will be described with reference to the operation explanatory diagrams of FIGS. The seat moving mechanism 19, the wheelchair lifter 20, the steering handle 17, and the right front door 14R and the rear door 15R are opened and closed by a remote control operation by a driver.

  As shown in FIG. 16A, in the vehicle V before the driver gets on, the front doors 14L, 14R and the rear doors 15L, 15R are closed, and the driver's seat 11 is aligned with the passenger seat 12 (normal position). The steering handle 17 is in a driving position (normal position). When the driver operates the remote controller from this state, as shown in FIG. 16 (b), the right front door 14R and the rear door 15R are opened forward and rearward, respectively, and the steering handle 17 is provided so as not to obstruct the driver getting on and off. Moves to a position (retracted position) that jumps forward and upward from the normal position.

  Subsequently, as shown in FIG. 16C, the driver's seat 11 moves forward and rotates 90 ° so that the driver's seat 11 faces the right side of the vehicle body. As is apparent from FIG. 5, the forward movement of the driver's seat 11 is performed by a ball screw mechanism 35 that operates a slide base 34 supported by slide rails 33 provided on the fixed base 32 by a motor (not shown). It is done by driving with. The driver seat 11 is rotated by driving a ring gear 38 supported by an annular guide member 36 via a ball bearing 37 with a pinion 41 operated by a motor 40.

  Subsequently, as shown in FIG. 17 (d), the driver's seat 11 is projected and lowered from the opening where the front door 14R is opened, and the wheelchair lifter 20 is projected outside the vehicle from the opening where the rear door 15R is opened. Lower to position.

  The operation of the sheet moving mechanism 19 at this time will be described with reference to FIGS. 7 and 9 to 11. As shown in FIG. 7, when the ball screw mechanism 62 is driven by the motor 61 provided on the seat base 58 from the state in which the driver's seat 11 faces the right side of the vehicle body, as shown in FIG. On the other hand, when the seat base 58 moves to the right side of the vehicle body, a part of the driver's seat 11 protrudes from the opening of the front door 14R to the outside of the vehicle. Subsequently, when the ball screw mechanism 45 (see FIG. 5) is driven by the motor 44 provided on the rotation base 39, the rear slide member 42 moves to the right side of the vehicle body with respect to the rotation base 39, as shown in FIG. The front slide member 54 connected to the rear slide member 42 via the outer links 46 and 46 and the inner links 47 and 47 also moves to the right side of the vehicle body, and the entire driver's seat 11 extends from the opening of the front door 14R to the outside of the vehicle. put out.

  At this time, since the guide rollers 50, 50 provided on the left and right outer links 46 are guided along the first guide rails 39a, 39a of the rotation base (see FIG. 5), the outer links 46, 46 and the inner links 47, 47 moves while maintaining a horizontal posture, and the driver's seat 11 protrudes from the opening of the front door 14R to the outside with the same height. When the rear slide member 42 further moves to the right side of the vehicle body, the guide rollers 50, 50 that have been guided by the first guide rails 39a, 39a of the rotary base 39 until then are moved from the first guide rails 39a, 39a to the swinging guide rails. 51, get on 51.

  As a result, as shown in FIG. 11, the swing guide rails 51, 51 swing downward around the fulcrum pins 52, 52 due to the weight of the driver seat 11, and the guide rollers 50 are moved to the swing guide rails 51, 51. , 50 and the inner links 47, 47 that form the four-bar parallel link mechanism in a downward direction swinging downward in cooperation with the outer links 46, 46, the driver's seat 11 maintains the same posture. Stop at the position where it descends towards the road (boarding position).

  Thus, when the driver's seat 11 extends out of the vehicle and reaches the boarding / alighting position where it is lowered toward the road surface, as shown in FIG. 17 (e), the driver sitting on the wheelchair 21 is self-powered or the power of the assistant Can be easily transferred to the driver's seat 11.

  Next, the operation of the wheelchair lifter 20 performed simultaneously with the operation of the seat moving mechanism 19 described above will be described with reference to FIGS. When the motor 73 is driven to rotate the male screw shaft 75, the slider 72 moves to the right side of the vehicle body along the guide rails 71 and 71, and an arm 77 pivotally supported by the slider 72 by a fulcrum pin 76 is a pair of rollers. 79 and 79 are guided by the guide rails 71 and 71 and moved to the right side of the vehicle body. When the rollers 79 and 79 are removed from the guide rails 71 and 71, the tip of the arm 77 swings downward, and eventually comes into contact with the road surface and stops (see FIG. 15).

  In this state, the wheelchair 21 is folded and the left and right wheels 80, 80 are placed on the support shafts 78, 78 (see FIG. 14), and the left and right auxiliary wheels 84, 84 are locked to the locking bar 85. Then (see FIG. 13), as shown in FIG. 17 (e), the driver can load the wheelchair 1 on the wheelchair lifter 20 by himself or with the help of an assistant. At this time, since the driver's seat 11 and the wheelchair lifter 20 projecting outside the vehicle are in a position close to each other, the work of loading the wheelchair 21 onto the wheelchair lifter 20 is further facilitated.

  When the driver operates the remote control from this state, as shown in FIG. 18 (f), the driver's seat 11 on which the driver is seated is retracted in the opposite direction to the above, and the wheelchair 21 is supported by the opposite movement as described above. The wheelchair lifter 20 is pulled into the vehicle. Subsequently, as shown in FIG. 17 (g), the driver's seat 11 is rotated by 90 ° so as to face the front of the vehicle body and slides back to the vehicle body and returns to the normal position. Then, as shown in FIG. 18 (h), the steering handle 17 that was finally in the retracted position moves rearward and downward toward the normal position, the front door 14R and the rear door 15R are closed, and the vehicle V can be driven. It becomes.

  The operation of the seat moving mechanism 19 and the wheelchair lifter 20 when the driver gets into the vehicle has been described so far, but the operation when the driver gets off the vehicle is the same.

  As described above, when a driver with a disability in the lower limb gets on and off the driver's seat 11, the steering handle 17 retracts in conjunction with the driver's seat 11, so that the driver's seat 11 moves in the longitudinal direction of the vehicle body, When the seat seat 11 rotates between the posture facing the front of the vehicle body and the posture facing the right side of the vehicle body, the steering handle 17 can be prevented from getting in the way and the driver can get on and off easily. Moreover, since the steering handle 17 is automatically raised and lowered in conjunction with the operation of the seat moving mechanism 19, a special operation for raising and lowering the steering handle 17 is not required.

  Although the embodiments of the present invention have been described above, various design changes can be made without departing from the scope of the present invention.

  For example, the structure of the seat moving mechanism 19 and the structure of the wheelchair lifter 20 are not limited to those of the embodiment, and an arbitrary structure can be adopted.

Overall perspective view of welfare vehicle 2 direction view of FIG. 3-3 arrow view of FIG. 4-4 arrow view of FIG. 5 enlarged view of FIG. Action diagram when rotating the seat 7 enlarged view of FIG. Sectional view taken along line 8-8 in FIG. Action explanatory diagram at the time of one-stage extension of the sheet Action explanatory diagram at the time of two-stage sheet extension Action diagram when the seat is lowered 12-12 arrow view of FIG. FIG. 13 is an enlarged cross-sectional view taken along line 13-13 of FIG. 14-14 enlarged sectional view of FIG. Action diagram when loading a wheelchair Figure 1 shows the procedure for getting on the driver and loading the wheelchair. Second partial diagram showing the procedure for getting on the driver and loading the wheelchair Figure 3 shows the procedure for getting on the driver and loading the wheelchair

Explanation of symbols

11 Driver's seat 13 Rear seat 14R Front door 15R Rear door 17 Steering handle 18 Operation handle 20 Wheelchair lifter 21 Wheelchair

Claims (4)

A welfare vehicle in which the driver's seat (11) is movable between a normal position facing the steering handle (17) in the vehicle and a boarding / exiting position that makes it easy for the driver to get on and off by overhanging the vehicle and approaching the road surface. There,
The steering handle (17) can be retracted upward in front of the vehicle body, and the steering handle (17) is automatically retracted when the driver's seat (11) is away from the normal position toward the getting on / off position. Welfare vehicles.   The wheelchair lifter (20) for loading and unloading the wheelchair (21) to and from the road surface is disposed between the driver seat (11) and the rear seat (13). Welfare vehicles.   The front door (14R) on the side of the driver's seat (11) slides forward and opens, and the rear door (15R) behind the driver's seat (11) slides backward and opens. The welfare vehicle according to claim 2. The operation handle (18) for operating the brake and the accelerator is provided at a position where a driver seated on the driver's seat (11) can be operated by hand. The welfare vehicle described in the paragraph.

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