JP2002058706A - Wheel chair fixing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the workability when fixing a wheelchair. SOLUTION: When the wheelchair is moved forward (FR) on the platform 1 of a vehicle, first to third hooks 11-13 installed to the platform 1 and strikers for hook installed to the wheelchair are engaged with each other and, at the same time, a floor-side striker 21 installed to the platform 1 and a locking member installed to the wheelchair are locked to each other. Consequently, the wheelchair is fixed. When the wheelchair is moved backward in the direction in which the wheelchair is released from the fixed state while the locking member is unlocked, the wheelchair is released from the fixed station.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheelchair fixing device for fixing a wheelchair to a floor of a vehicle.

[0002]

2. Description of the Related Art As a conventional wheelchair fixing device, for example, as shown in FIG. 7, a pair of left and right front fixing belts 01 are provided at predetermined positions on a platform movable on the floor of a vehicle and on the ground. A pair of left and right rear fixed belts 02 are attached, and hooks provided at the tips of the belts 01 and 02 are engaged with a wheelchair (not shown).
A device is known in which each of the belts 01 and 02 is shortened to a minimum length by a length adjusting means provided in the middle of the wheel chair 02 so that the wheelchair is fixed.

[0003]

However, in the above-mentioned prior art, when the above-mentioned hooks of the respective fixing belts are engaged with the wheelchair, they move to the front side and the rear side of the wheelchair, respectively. It is necessary to work with cancer, and when operating the means for adjusting the length of each belt to make each belt in tension, move to the position of each belt and perform the work by crouching It is necessary to perform these operations each time the wheelchair is fixed, and there is a problem that the workability is poor and the work requires time.

The present invention has been made in view of the above-mentioned conventional problems, and has as its object to improve workability when fixing a wheelchair.

[0005]

In order to achieve the above object, according to the present invention, one of a hook and a hook striker engaged with the hook is installed on the floor side of a vehicle and the other is mounted on a wheelchair. When the wheelchair is moved in the wheelchair fixing direction which is one of the front and rear directions of the wheelchair, the hook and the hook striker move relative to the hook in the vertical direction and the wheelchair fixing direction. Is formed so that the engagement is released when the wheelchair is moved in a fixing releasing direction which is a direction opposite to the wheelchair fixing direction, and the locking member is engaged with the locking member. One of the lock strikers is locked on the vehicle floor, and the other is mounted on the wheelchair. The triker is formed so as to be locked at the same time when the hook and the hook striker are engaged, thereby restricting the lock striker from moving at least in the unlocking direction with respect to the lock member. When the wheelchair is moved in the wheelchair fixing direction on the floor, the hook and the hook striker are engaged, and the lock member and the lock striker are locked to lock the wheelchair, and the lock of the lock member is locked. When the wheelchair is moved in the fixing releasing direction while releasing the lock, the fixing of the wheelchair is released.

According to a second aspect of the present invention, in the wheelchair fixing device according to the first aspect, the lock member is attached to the wheelchair, and the lock member is locked with the lock striker. The lock release operation means for performing the operation for releasing the wheelchair may be attached to the upper part of the wheelchair. Further, as in the invention according to a third aspect, in the wheelchair fixing device according to the second aspect, the unlocking operation means may be configured to be attached to an upper portion of the back of the seat back of the wheelchair. Also, as in the invention described in claim 4, claims 1 to 3
In the wheelchair fixing device described in the above, the hook is engaged with the hook striker to regulate the movement of the striker in the vertical direction and the wheelchair fixing direction, and the fixing release direction of the engagement groove And a tapered portion that is gradually formed in the fixing release direction and that gradually expands in the vertical direction may be formed. Also, as in the invention according to claim 5, in the wheelchair fixing device according to any one of claims 1 to 4, a plurality of the hooks are provided apart from each other in the front-rear direction of the wheelchair, and the same number of hooks are provided. A configuration in which a striker is provided may be employed. According to a sixth aspect of the present invention, in the wheelchair fixing device according to any one of the first to fifth aspects, the lock member is provided at a lower front portion of the wheelchair, and the hook or the striker for the hook is mounted on the wheelchair. May be provided on the left and right sides of the lower front part and the lower rear part of the wheelchair.

According to a seventh aspect of the present invention, in the wheelchair fixing device according to any one of the first to sixth aspects, a guide portion is provided on one of the floor and the wheelchair of the vehicle, and a guide portion is provided on the other. A non-guide member movable along is provided, and when the wheelchair is moved in the wheelchair fixing direction,
When the non-guide member is guided by the guide portion, the lock member and the lock striker are locked and the hook and the hook striker are guided to a predetermined fixed position where the hook striker is engaged. Good. Also,
As in the invention according to claim 8, in the wheelchair fixing device according to claim 7, when the guide portion guides the non-guide member to guide the wheelchair to the predetermined fixed position, a predetermined obstacle is provided. In order to avoid the problem, an offset portion may be provided to guide the wheelchair while offsetting the wheelchair in a direction perpendicular to the traveling direction. According to the ninth aspect of the present invention, in the wheelchair fixing apparatus according to the eighth aspect, the obstacle is a fixing sheet disposed adjacent to the predetermined fixing position in a vehicle width direction, and the offset section May be configured such that the wheelchair guides the wheelchair away from the seat in the vehicle width direction when the wheelchair enters, so that the wheelchair does not interfere with the seat.

Further, as in the invention according to claim 10,
10. The wheelchair fixing device according to claim 7, wherein the non-guide member is a guide roller that can roll along a guide portion, and the guide roller is provided at a lower portion of the wheelchair and the guide portion. May be formed on the floor of the vehicle. Further, as in the invention according to claim 11, in the wheelchair fixing device according to any one of claims 7 to 10, the non-guide member is provided near a caster provided at a lower front portion of the wheelchair. Configuration. According to a twelfth aspect of the present invention, in the wheelchair fixing device according to any one of the first to eleventh aspects, one of a hook and a hook striker provided on the wheelchair in the wheelchair fixed state is provided on the vehicle floor. And a restricting surface may be provided which is disposed at a position in the vicinity of and which restricts further movement by contacting one of the members when the wheelchair moves in the left-right direction by a predetermined amount or more.

[0009]

According to the present invention, when the wheelchair is mounted on the floor of the vehicle, the wheelchair is moved from a predetermined position in one of the front and rear directions in the wheelchair fixing direction. Along with this movement, the hook and the hook striker are engaged, and the lock member and the lock striker are in a locked state. The relative movement in the fixing direction is regulated, and the locking member and the locking striker are locked, so that at least the movement of the wheelchair in the fixing releasing direction is regulated, and the wheelchair is fixed on the floor. In this manner, the wheelchair is fixed only by moving the wheelchair in the wheelchair fixing direction, and the wheelchair is unlocked simply by moving the wheelchair in the unlocking direction while releasing the lock by the lock member, It is not necessary to move around the wheelchair every time the wheelchair is fixed and released, unlike the related art, and the effect that the workability can be improved can be obtained.

According to the second aspect of the present invention, when unlocking the lock member, the unlock operation means attached to the upper part of the wheelchair is operated. Therefore,
The unlocking operation can be performed while standing, and the unlocking operation and the operation of moving the wheelchair in the unlocking direction can be easily performed at the same time, so that the workability can be further improved. Furthermore, when the unlocking operation means is attached to the upper part of the back of the seat back of the wheelchair, the simultaneous operation can be more easily performed.

According to the fourth aspect of the present invention, when the wheelchair is moved in the wheelchair fixing direction, the hook striker passes through the tapered portion expanded in the vertical direction, and the width of the tapered portion in the vertical direction. After gradually narrowing, the engagement with the engagement groove restricts the movement in the vertical direction and the wheelchair fixing direction. Therefore, even if the relative position between the hook and the hook striker varies vertically due to the weight difference of the occupant of the wheelchair and shifts vertically with respect to the engagement groove, the hook striker first hits the tapered portion, and then the tapered portion. And is moved to and engaged with the engagement groove. Therefore, the engagement groove of the hook and the hook striker are securely engaged, and high operability is obtained. In the invention described in claim 5, a plurality of hooks are provided apart from each other in the front-rear direction of the wheelchair, and the same number of strikers for hooks are provided. The movement in the direction is restricted, and the wheelchair can be fixed more reliably. In the invention according to claim 6, when the wheelchair is fixed,
Since the wheelchair is fixed at at least three points on the front and rear left and right sides, the wheelchair can be more securely fixed.

According to the invention described in claim 7, when the wheelchair is fixed, even if the wheelchair is moved in the wheelchair fixing direction at a position deviated in the left-right direction from the normal position, the contact member hits the guide portion. The guide portion guides the lock member and the lock striker to the locked state, and the hook and the hook striker are engaged to each other. Therefore, the operability is further improved. Further, in the invention according to claim 8 or claim 9, when the wheelchair is advanced toward the fixed position, the wheelchair moves from the approach position to the fixed position while the non-guide member is guided by the guide portion. The non-guide member is guided by the offset portion, and the wheelchair moves while offsetting the wheelchair in a direction perpendicular to the traveling direction while avoiding a predetermined obstacle such as an adjacent fixed seat according to claim 9. . As described above, the person who operates the wheelchair simply moves the wheelchair toward the fixed position, and moves the wheelchair naturally right and left avoiding a predetermined obstacle such as a fixed seat without operating the wheelchair. Therefore, the operability is excellent. In addition, Claim 10
In this case, the guide roller provided at the lower part of the wheelchair rolls along the guide surface and is guided, and the guide becomes smoother and the operability is higher. Becomes Further, the offset portion may be formed so as not to interfere with an obstacle when the wheelchair is moved backward from the fixed position. According to the eleventh aspect, when the non-guide member is guided by the offset portion, the input in the direction orthogonal to the traveling direction is efficiently transmitted to the caster wheels, and the wheelchair is turned. Excellent in nature.

According to the twelfth aspect of the present invention, when the wheelchair is fixed to the wheelchair, if the rear portion of the wheelchair is shifted left and right beyond a predetermined amount, the hook provided on the wheelchair and the hook striker are provided. One of them hits a regulation surface provided on the floor, and further movement in the left-right direction is regulated. Therefore, it is possible to prevent the hook and the striker from being disengaged due to the shift of the rear portion of the wheelchair by more than a predetermined amount, whereby the wheelchair is more securely fixed.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 First, the configuration will be described. FIG.
FIG. 3 is a perspective view showing a configuration on the vehicle body side in the wheelchair fixing device according to the first embodiment. In the figure, F indicates a floor. On this floor F, the platform 1 is provided immediately before a back door (not shown) or at a side position of a side door (not shown). This platform 1
Has a rectangular shape that is long in the front-rear direction of the vehicle in a plan view, and is supported by a moving mechanism (not shown) so as to be movable vertically and horizontally between a position on the illustrated floor F and a ground position outside the vehicle. A handrail 2 is provided upright at the left end of the platform 1 in the drawing.

At the center of the platform 1, a fixing floor 3 is protruded one step higher than a general portion of the platform 1.

The fixing floor 3 is located in front of the vehicle (arrow F).
The first hook 11 and the floor-side striker 21 are provided side by side at the front end of the first hook 11 and the floor striker 21. Also, a second hook 12 and a third hook 13 are provided at the left and right ends of the intermediate portion of the fixing floor 3.
Are provided.

The hooks 11, 12, 13 are respectively
It has a flat shape, extends in the vehicle front-rear direction, and is fixed to the fixing floor 3 in an upright state. In addition, each hook 11,
The first hook 11 and the second hook 13 are formed in substantially the same shape. Referring to FIG. 2, the first hook 11 has a hook portion 11a (1) protruding rearward of the vehicle.
2a, 13a) are formed, and an engagement groove 11b (1) for engaging a striker described later is formed below the hook portion 11a.
2b, 13b), and a tapered portion 11c (12) extending vertically in the vehicle rear of the engagement groove 11b.
c, 13c) are formed vertically. As shown in FIG. 1, the floor striker 21 has a substantially U-shaped engaging portion extending in the front-rear direction.

The fixing hook 3 has a first hook 11
And a floor striker (lock striker) 21;
Between the second hook 12 and the third hook 13,
Protrusions 15, 15 having a substantially triangular planar shape are formed to protrude upward. Each of the projections 15 has a regulating surface 15a provided on an outer end surface thereof and a guide surface 15b provided on an inner end surface thereof. The guide surface 1
5b and 15b are formed so as to face each other, and are formed in such a shape that the interval between them becomes narrower toward the front of the vehicle. Conversely, the regulation surfaces 15a, 15a are formed so as to face in opposite directions, and are formed in a shape in which the distance between the two increases toward the front of the vehicle.

Further, rails 16, 16, 17, 17 to which the respective fixing belts shown in the prior art can be attached are provided on the left and right sides of the front end of the platform 1 and near the rear ends of the projections 15, 15. Is provided.

Next, the configuration of the wheelchair C to be fixed will be described. FIG. 3 is a perspective view schematically showing the configuration of the wheelchair C. As shown, the wheelchair C is the main frame 3
A pair of left and right casters 41, 41 is attached to the lower front part of the main frame 30, and a pair of left and right wheels 42 is attached to the lower rear part of the main frame 30 so as to be movable. The main frame 30 has two left and right pipes 3 extending in the front-rear direction on the left and right and having rear ends welded through a metal hub block 31.
A substantially bow-shaped frame pipe in which one end is fitted and welded from above to a hole formed on the upper side of the hub block 31, and the other end is connected to the front end of the left and right pipes 32 by welding or the like. 33, and the caster 41 at the lower end.
Is mounted rotatably, and a slightly upper portion thereof is welded to the left and right pipes 32, and an upper end portion is welded to the lower side of the frame pipe 33.
And left and right pipes 32, 32 extending in the left-right direction
A front horizontal pipe 34 welded to a connection point between the front block 34 and the vertical pipe 37, and a substantially U-shape in which both ends extending in the left-right direction are fitted and welded to holes formed on the lower side of the hub block 31. And a substantially U-shaped intermediate horizontal pipe 35 extending in the left-right direction and welded to the lower side of the middle part of the left and right pipes 32. Note that wheels 42 are attached to the side surfaces of the hub block 31. A pair of left and right footrests 38 are attached to the front end of the frame pipe 33.

A seat 50 is supported on the main frame 30 via a lifting mechanism (not shown). The seat 50 is supported by the elevating mechanism and is provided with a pad on the inner side of the skin. The seat 50 can be tilted back and forth to the rear end of the seat cushion 51 via a reclining device (not shown). The seat back 52 includes a seat back 52 having a pad provided on the inner side of the outer skin, and an armrest 53 having one end rotatably mounted on the left and right sides of the seat back 52.
A handle 54 is provided on the back of the seat back 52.
Is attached.

Further, in the present embodiment, a chair having a substantially U-shape which can be engaged with the engagement groove 11b of the first hook 11 is provided at a position below the intermediate portion of the front side horizontal pipe 34. A first side striker (hook striker) 61 is provided, and a lock member 64 that locks by engaging with the floor side striker 21 is provided next to the first striker. The chair-side first striker 61 and the lock member 64 are attached to a bracket (not shown) fixed to the front side horizontal pipe 34 by welding. The lock member 64
Is provided with a U-shaped groove 64a into which the floor striker 21 enters as shown in the figure, and the back of the U-shaped groove 64a faces a direction which does not normally engage with the floor side striker 21, although not shown. The latch that rotates while engaging with the floor-side striker 21 when the floor-side striker 21 enters the U-shaped groove 64a, and restricts the latch from rotating in the disengagement direction when the latch rotates. And a locking mechanism having a locking claw that performs locking. This lock mechanism is generally used, for example, for an automobile door lock. In the figure, reference numeral 64b denotes a cable whose one end is connected to a lock claw (not shown) of the lock mechanism.
When the release lever 64c connected to the other end of b is pulled, the restriction by the lock claw is released, and the latch (not shown) can rotate in the disengagement direction and the lock is released. The release lever 64c is attached to the back of the seat back 52.

Further, a pair of guide rollers (non-guide members) 65, 65 are supported on the left and right sides of the chair-side first striker 61 and the lock member 64 so as to be rotatable about a vertical support shaft. . Note that this support is performed through the above-mentioned brackets (not shown), and the guide rollers 65, 65 have their outer circumferences along guide surfaces (guide portions) 15b, 15b provided on the fixing floor 3. Supported at a rotatable height.

Further, a chair-side second striker (hook striker) 62 and a chair-side third striker (hook striker) that engage with the second hook 12 and the third hook 13 are located below the middle portion of the left and right pipes 32. Striker) 63
Is provided. In addition, both strikers 62 and 63
It is attached to a plate (not shown) that is bridged in the front-rear direction between the intermediate horizontal pipe 35 and the rear horizontal pipe 36, and is disposed below the intermediate horizontal pipe 35. Here, the relationship between the chair-side strikers 61 to 63 and the hooks 11 to 13 will be described with reference to FIG. 4.
FIG. 4A shows the relationship between the first hook 11 and the first hook 11, and FIG. 5A shows the positional relationship when a person weighing 500 N sits on the wheelchair C.
1 and the engaging groove 11b are set to have the same height. In the drawing, (b) shows an empty state, in which the engaging portion of the striker 61 is set to hit the tapered portion 11c on the lower surface of the hook 11a. In the figure, (c) is 1000
The positional relationship when a person weighing N is seated is shown, and at this time, the engaging portion of the striker 61 is set so as to abut on the lower side of the tapered portion 11c.

Next, the use procedure of the first embodiment will be described. A procedure for fixing the wheelchair C will be described. In this case, first, the wheelchair C is arranged behind the fixing floor 3 on the platform 1, and the wheelchair C is moved forward from that position in the wheelchair fixing direction. At this time, the wheelchair C is disposed substantially at the center of the platform 1 in the left-right direction. If this position is shifted left and right from the center, one of the pair of guide rollers 65 provided at a position below the front horizontal pipe 34 is used. However, the convex portions 15 of the fixing floor 3,
The wheelchair C is centered in the left-right direction by contacting one of the guide surfaces 15b provided on the device 15 and moving along the tapered guide surface 15b. At this time, the casters 41 and the wheels 42 roll on the left and right outer sides of the fixing floor 3.

When the wheelchair C is advanced to the predetermined lock position as described above, the strikers 61 to 63 provided on the wheelchair C are replaced with the hooks 11 to 13 provided on the fixing floor 3. Engagement grooves 11b, 12b, 1
3b, the locking member 64 provided on the wheelchair C and the floor striker 21 provided on the fixing floor 3 are engaged and locked.

When the wheelchair C is advanced to the above-described lock position, the guide rollers 65, 65 and the casters 41, 41 are located at substantially the same position in the front-rear direction.
The wheelchair C can be steered in the left-right direction only by pushing the wheelchair C forward, and the steering operability is excellent. Further, the second and third hooks 12 and 13 which are rear engagement portions are provided.
And the chair-side second and third strikers 62, 63 are engaged with the front guide rollers 65, 65 at the guide surfaces 15b,
Centering in the left and right direction at 15b, guide surfaces 15b,
Since the front-back length of 15b is sufficient, when the wheelchair C is advanced to the vicinity of the lock position, the rear engagement portion is also centered. In the event that the rear engagement portion is to be shifted from the centering position, one of the second and third strikers 62 and 63 is restricted by the regulating surfaces 15a and 15a provided on the fixing floor 3. And the displacement from the centering position is restricted. Therefore, the positions of the strikers 62 and 63 do not deviate beyond the range in which the hooks 12 and 13 can be engaged with each other. Is to be engaged.

In the above operation, five wheelchairs C
When a person having a weight of about 00N is riding, each of the chair-side strikers 61 to 63 enters straight into the engagement grooves 11b to 13a of each of the hooks 11 to 13, and also includes an empty state. The striker 6 is used for both lighter and heavier people.
1 to 63 are tapered portions 11c to 13 as shown in FIG.
c, and is guided along the upper surface and lower surface of c, along the inclination thereof, and finally enters the engaging grooves 11b to 13a. Incidentally, as described above, the strikers 61 to 63 are
When guided by c-13c, as shown in FIG. 4 (b), when lighter than the set value, strikers 61-63
4 is guided downward, so that a ground contact pressure equivalent to that of a person having a weight of 500 N is obtained due to the elastic deformation of the wheels 42 and the main frame 30, and the like.
As shown in (c), when it is heavier than the set value, the strikers 61 to 63 are guided upward, and
By reducing the elastic deformation of the main frame 30, the ground pressure is reduced to the same level as when a person having a weight of 500N is riding.

In this locked state, the forward movement of the wheelchair C and the movement of the wheelchair C in the vertical direction are not controlled by the first chair side.
-3rd striker 61-63 and 1st-3rd hook 11-
13 is restricted by the engagement with the engagement grooves 11a, 12a, 13a, and the movement of the wheelchair C rearward and in the left-right direction is
It is regulated by the engagement lock between the lock member 64 and the floor striker 21. In addition, in the rear engagement portion, the movement in the left-right direction is restricted by the frictional force between the wheels 42, 42 and the upper surface of the fixing floor 3, and the chair-side second position described above. , The third strikers 62, 63 and the restriction surfaces 15a, 15a restrict the movement. As described above, the front center and the rear left and right of the wheelchair C are firmly fixed, so that the wheelchair C is securely and stably fixed to the platform 1. Further, in this locked state, it is preferable to lock the wheels 42 by operating a parking brake (not shown) in the wheelchair C.

Next, a procedure for releasing the fixation of the wheelchair C will be described. First, the operation of the parking brake in the wheelchair C is released, and then the release lever 64c provided on the back of the seat back 52 is lifted to release the cable 64.
b to release the lock on the lock member 64,
While maintaining the unlocked state, the wheelchair C is pulled rearward in the unlocking direction while holding the handle 54. Thereby, the engagement between the lock member 64 and the striker 21 can be released, and the hooks 11 to 13 and the chair-side strikers 61 to 63 are disengaged rearward. This engagement can also be released. The release operation is completed by the above operation.

As described above, in both cases where the wheelchair C is fixed and the case where the wheelchair C is released, it is sufficient to simply move the wheelchair C forward or retreat while operating the release lever 64c. Also, it can be performed in a standing posture without squatting down, resulting in an effect that the workability is excellent and the work can be performed in a short time. In addition, as described above, the wheelchair C can be fixed only by moving the wheelchair C forward, even if the wheelchair C is empty or a person with a light weight or a heavy weight is carried. The hooks 11 to 13 can be reliably carried out. In this respect, the operability is excellent. In addition, at this time, as described with reference to FIG. Stability can be achieved.

Further, in the first embodiment, since the rails 16 and 17 are provided on the front and rear, the wheelchair C shown in the embodiment is used.
When a conventional wheelchair or the like other than the above is fixed, it can be fixed using a fixing belt in the same manner as the conventional case, which is excellent in versatility.

Further, according to the first embodiment, the seat 50 of the wheelchair C includes a seat cushion 51 and a seat back 52 padded on the inside, and the armrest 5
3 and a reclining device (not shown), so that it is excellent in sitting comfort and can be used as a normal vehicle seat in a state where the wheelchair C is fixed. Because it is equipped with 42, it can be moved easily, and it can be used in a way that a normal vehicle is equipped with a seat that can be used as a wheelchair C, and it is possible to respond to new demands of consumers. can get.

(Embodiment 2) Next, Embodiment 2 corresponding to the inventions of claims 8 and 9 will be described. Since the second embodiment is a modification of the first embodiment, the same components as those of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Also, the operation will be the same as that of the first embodiment. The description of the operation of the first embodiment will be omitted, and only the differences from the first embodiment will be described.

In the second embodiment, as shown in FIG. 5, the fixing floor 3 is provided directly on the floor F of the vehicle and is disposed at the position on the right of the fixing seat S. A lifter 27 is provided at a position behind the fixing floor 3.
1 is provided. The lifter 271 is provided at the rear part of the vehicle, and is mounted on a platform (not shown).
Is moved up and down between the ground and the floor F using an opening of a back door (not shown). Further, on the left and right sides of the lifter 271, convex portions 272 for storing the driving units extend in the front-rear direction. In the figure, CP is a fixing floor 3.
Is the center in the vehicle width direction, while CL is the lifter 271.
Are centered in the vehicle width direction, and both are shifted in the vehicle width direction as shown in the figure.

Therefore, the wheelchair C is controlled by the lifter 271.
When the wheelchair C is raised inside the vehicle, the center of the wheelchair C in the left-right direction substantially coincides with the center CL of the lifter 271, and this position (the position on the lifter 271 where the wheelchair center is substantially coincident with the center CL is defined as the approach position. It is necessary to move the wheelchair C forward and to the left and right so that the center of the wheelchair C reaches a fixed position that coincides with the center CP on the fixing floor 3. The difference between the positions of the centers CP and CL is that the lifter 271
Is formed to have a larger dimension in the width direction than the wheelchair C, so that the position of the center CL is inevitably closer to the center of the vehicle, whereas the fixed seat S is provided on the vehicle floor F, Since the center CP of the fixing floor 3 is disposed on the right side of the vehicle, both centers CP and C
This is because L cannot be matched with a limited vehicle width dimension.

For this reason, if the wheelchair C is arranged at the approach position and is moved forward as it is, the front left portion of the wheelchair C interferes with the fixed seat S, and on the other hand, the center CP of the fixed floor 3
, The wheel 4 on the right side of the wheelchair C
2 is a convex portion 272 provided at the right end of the lifter 271.
Interfere with. Therefore, it is necessary to move the wheelchair C to the right side of the vehicle while advancing the wheelchair C from the approach position to the fixed position. Therefore, in the second embodiment, when the wheelchair C is moved between the approach position and the fixed position, the first guide as a guide portion that guides in the left-right direction without interfering with the fixed sheet S and the convex portion 272. A surface 211 and a second guide surface 212 are provided. That is, as shown in FIG.
Are provided with left and right convex portions 215 and 216, and inside the convex portions 215 and 216, the first and second guide surfaces 21 and 216 are provided.
1 and 212 are provided. Both guide surfaces 211 and 212
When the center of the wheelchair C is made to go straight with the center CL, the guide rollers 65, 65
The rear end of the guide surface 211 is curved toward the center of the vehicle so as to be able to enter between the positions 1 and 212, and
The gap between the two guide surfaces 211 and 212 is narrower toward the front FR of the vehicle, and is formed so that a gap is hardly generated between the gap between the two guide surfaces 211 and 212 and the guide rollers 65 and 65 at the fixed position. Furthermore, both guide surfaces 211, 21
2 are provided with offset portions 211a and 212a in the middle portion. The offset portion 211a is a wheelchair C
When the guide roller 6 is advanced from the approach position, the left guide roller 6
5 to guide the vehicle in the right direction and to caster 4 on the left side.
1 does not interfere with the fixed sheet S, and the other offset portion 212a is prevented from moving excessively rightward by contacting the right guide roller 65, and the right wheel 42 is mounted on the lifter 271. Right convex part 272
In addition, when the wheelchair C is advanced, an excessive amount of the offset with respect to the fixed position is returned, and the guide is formed to be guided to the fixed position so as to be parallel to the vehicle longitudinal direction. ing. For this reason, one offset portion 211a is formed in an arcuate shape bulging toward the center CP from front and rear to the central portion, and the other offset portion 212b is very gently separated from the center CP from the rear side to the central portion. It is curved and formed in a shape curved forward from the center toward the center CP.

Next, a procedure for loading and fixing the wheelchair C to the vehicle by the wheelchair fixing device of the second embodiment will be described.
When the wheelchair C is loaded in the vehicle according to 1, the wheelchair C is disposed at an approach position where its center substantially coincides with the center CL of the lifter 271. When the wheelchair C is advanced from this approach position and reaches the position shown by the dotted line in FIG. 5, the guide rollers 65 provided at the lower front end of the wheelchair C,
65, the left guide roller 65 is in contact with the guide surface 211, is guided by the curved portion of the offset portion 211a of the guide surface 211, and proceeds in the right direction of the vehicle. Interference with the right rear portion is prevented without performing any operation, and when the wheelchair C is displaced to the right as much as possible to prevent this interference, the right guide roller 65 contacts the other offset portion 212a,
Unnecessary rightward displacement is regulated, and the right wheel 42 is prevented from interfering with the convex portion 272 of the lifter 271. Then, when the wheelchair C is further advanced, the guide roller 65 on the right side is shifted to the offset portion 21 of the guide surface 212.
2a, the center of the wheelchair C is disposed at a fixed position substantially coincident with the center CP when the vehicle is returned to the left side of the vehicle and reaches the front ends of the guide surfaces 211 and 212. Are substantially parallel to the vehicle front-rear direction, and the respective strikers 61 to 63 provided on the wheelchair C are engaged with the respective hooks 11 to 13 provided on the fixing floor 3 as in the first embodiment, Further, the lock member 64 and the floor side striker 21 are engaged and locked. Also,
In this state, as in the first embodiment, the movement of the rear portion of the wheelchair C in the left-right direction is regulated by the regulation surfaces 15a, 15a. As described above, when the wheelchair C is guided by the guide surfaces 211 and 212, the guide rollers 65 are used.
Is provided in the vicinity of the caster 41 and has excellent steering characteristics as described above, so that the wheelchair C can smoothly travel while changing its direction in the direction perpendicular to the traveling direction as described above. Is done.

Further, when the wheelchair C is retracted from the fixed position, the left guide roller 65 is
11a abuts against the curved portion of the front end portion and is displaced in the right direction of the vehicle, so that the rear side of the caster 41 turns rightward.
2 will advance to the left, which is the vehicle center direction. Therefore, the wheelchair C can be moved backward without the right wheel 42 interfering with the protrusion 272 of the lifter 271.

As described above, according to the second embodiment, when the wheelchair C is moved straight from the position where the wheelchair C is carried into the vehicle by the lifter 271, the fixed seat S is in spite of the positional relationship of interfering with the fixed seat S. Wheelchair C can be fixed seat S only by moving wheelchair C straight ahead without performing operations to avoid
And is guided and fixed to a predetermined fixed position. Therefore, it is easy to use.

Although the embodiment has been described with reference to the drawings, the present invention is not limited to this embodiment. For example, in the first embodiment, the first to third hooks 11 to 13 are provided on the platform 1, and the chair-side first to third strikers 61 to 63 engaged with the first to third hooks 11 to 13 are connected to the wheelchair C.
However, the hook may be provided on the wheelchair, and the striker may be provided on the vehicle body. Although the hooks 11 to 13 and the like are provided on the platform 1, they may be provided on the floor F. Similarly, the lock member 64 and the floor striker 21 may be interchanged between the floor side and the wheelchair side. In the embodiment, three sets of each of the hooks 11 to 13 and each of the strikers 61 to 63 are provided, but the number is not limited to this, and may be one, two or four or more sets. The stability increases as the number of sets increases, but the number of sets is increased to one at the front part and two at the left and right sides as in the present embodiment. Further, in the second embodiment, the rear end of the guide surface 212 has a shape that does not curve so much toward the vehicle center, but the rear end is disposed closer to the center of the vehicle as long as the guide roller 65 can be received. You may. Further, in the embodiment, the guide roller is used as the non-guide member, and the guide surface is shown as the guide portion. However, the means for guiding the wheelchair is not limited to this. For example, the guide portion is formed in a rod shape. The non-guide member may be a columnar member that moves along the rod-shaped member.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration on a floor side according to a first embodiment.

FIG. 2 is a side view showing a main part according to the first embodiment.

FIG. 3 is a perspective view showing a configuration of a wheelchair according to the first embodiment.

FIG. 4 is an operation explanatory view of a main part in the first embodiment.

FIG. 5 is an overall explanatory diagram according to a second embodiment.

FIG. 6 is a perspective view showing a main part according to the second embodiment.

FIG. 7 is a perspective view showing a conventional technique.

[Explanation of symbols]

 Reference Signs List 1 platform 3 fixing floor 11 first hook 11a hook portion 11b engagement groove 11c taper portion 12 second hook 12a hook portion 12b engagement groove 12c taper portion 13 third hook 13a hook portion 13b engagement groove 13c taper portion 15 convex Part 15a Regulatory surface 15b Guide surface 16 Rail 17 Rail 21 Floor striker 30 Main frame 31 Hub block 32 Left and right pipe 33 Frame pipe 34 Front horizontal pipe 36 Rear horizontal pipe 37 Vertical pipe 38 Footrest 41 Caster 42 Wheel 50 Seat 51 Seat cushion 52 seat back 53 armrest 54 handle 61 striker 61 chair side first striker 62 chair side second striker 63 chair side third striker 64 locking member 64a U-shaped groove 64b cable 6 c release lever 65 guide roller 211 guide surface 211a offset portion 212 guide surface 212a offset portion 215 protrusion 271 lifter 272 protrusions C wheelchair CL center CP center F floor S fixing sheet

Claims (12)

[Claims] 1. One of a hook and a hook striker that engages with the hook is installed on the floor side of the vehicle, and the other is attached to a wheelchair. The hook and the hook striker are arranged in the front-rear direction of the wheelchair. On the other hand, when the wheelchair is moved in the wheelchair fixing direction, the hook striker is in an engaged state in which the relative movement of the hook striker in the vertical direction and the wheelchair fixing direction with respect to the hook is restricted, and is opposite to the wheelchair fixing direction. When the wheelchair is moved in the fixing release direction, the engagement is released, and one of a lock member and a lock striker that engages with the lock member to be locked is installed on the floor of the vehicle. And the other is attached to a wheelchair, and the lock member and the lock striker engage the hook and the hook striker. When the wheelchair is moved in the wheelchair fixing direction on the floor of the vehicle, the locking state is formed at the same time when the wheelchair is locked and the locking striker is prevented from moving at least in the unlocking direction with respect to the locking member. When the hook and the hook striker are engaged, the locking member and the locking striker are locked and the wheelchair is fixed, and the wheelchair is moved in the unlocking direction while unlocking the lock member. A wheelchair fixing device wherein the fixing of the wheelchair is released. 2. The device according to claim 1, wherein the lock member is attached to a wheelchair, and an unlocking operation means for unlocking the lock member and the lock striker is attached to an upper part of the wheelchair. The wheelchair fixing device according to claim 1, wherein 3. The wheelchair fixing device according to claim 2, wherein the unlocking operation means is attached to an upper part of a back of a seat back of the wheelchair. 4. An engaging groove which engages with the hook striker to restrict the movement of the striker in the vertical direction and the wheelchair fixing direction, the hook being continuous with the engaging groove in the fixing releasing direction. 4. The wheelchair fixing device according to claim 1, wherein a tapered portion which is formed and gradually expands in a vertical direction toward the fixing releasing direction is formed. 5. The device according to claim 1, wherein a plurality of the hooks are provided apart from each other in the front-rear direction of the wheelchair, and the same number of hook strikers are provided.
5. The wheelchair fixing device according to any one of items 1 to 4. 6. The lock member is provided at a lower front portion of a wheelchair, and the hooks or hook strikers are provided at right and left sides of a lower front portion of the wheelchair and a lower rear portion of the wheelchair. The wheelchair fixing device according to claim 1. 7. A guide portion is provided on one of a floor and a wheelchair of the vehicle, and a non-guide member movable along the guide portion is provided on the other, and when the wheelchair is moved in a wheelchair fixing direction. Since the non-guide member is guided by the guide portion, the lock member and the lock striker are locked, and the hook and the hook striker are guided to a predetermined fixed position where the hook striker is engaged. 7. The wheelchair fixing device according to claim 1, wherein: 8. The guide portion guides a wheelchair to the predetermined fixed position by guiding a non-guide member.
The wheelchair fixing device according to claim 7, further comprising an offset portion that guides the wheelchair while offsetting the wheelchair in a direction perpendicular to the traveling direction to avoid a predetermined obstacle. 9. The obstacle is a fixed seat disposed adjacent to the predetermined fixed position in the vehicle width direction, and the offset portion guides the wheelchair away from the seat in the vehicle width direction when the wheelchair enters. The wheelchair fixing device according to claim 8, wherein the wheelchair is configured not to interfere with the seat. 10. The non-guide member is a guide roller that can roll along a guide portion. The guide roller is provided at a lower portion of a wheelchair, and the guide portion is formed on a floor of a vehicle. 8. The method according to claim 7, wherein
10. The wheelchair fixing device according to any one of claims 9 to 9. 11. The wheelchair fixing device according to claim 7, wherein the non-guide member is provided near a caster provided at a lower front portion of the wheelchair. 12. The vehicle floor is disposed at a position near one of a hook provided on the wheelchair and a hook striker in a state where the wheelchair is fixed, and when the wheelchair moves in the left-right direction by a predetermined amount or more, The wheelchair fixing device according to any one of claims 1 to 11, further comprising a regulating surface that contacts the member and regulates further movement.