JP4185239B2 - Wheelchair fixing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wheelchair fixing device for fixing a wheelchair to a floor of a vehicle.
[0002]
[Prior art]
As a conventional wheelchair fixing device, for example, as shown in FIG. 16, a pair of left and right front fixing belts 01 and 01 and a pair of left and right rear fixing belts 02 and 02 are arranged at predetermined positions on the floor of the vehicle. The hooks 03 and 04 attached to the front ends of the belts 01 and 02 are engaged with a wheelchair (not shown), and then the front fixing belt is pulled by a drive mechanism having a motor provided under the floor. Fixing devices are known.
[0003]
In the above-described prior art, when the wheelchair is fixed, first, the wheelchair parking brake is operated to stabilize the wheelchair in the vehicle interior, and then hooks 03 and 03 are hooked from the front side of the wheelchair to the front of the wheelchair. Next, after turning to the rear side of the wheelchair, hooks 04, 04 are hooked on the rear part of the wheelchair, and then the parking brake is once released, and then the motor of the drive mechanism is driven to hook the front hooks 03, 03. The front wheel fixing belt 01, 01 is pulled to move the wheelchair forward, the belt 01, 02 is put in tension, the wheelchair is fixed, the wheelchair parking brake is activated again, and the wheelchair is fixed more securely. And
Also, when releasing the lock, first reverse the motor of the drive mechanism to loosen the front fixing belts 01, 01, then release the wheelchair parking brake and move the wheelchair slightly backward. After loosening the rear fixing belts 02, 02, the wheelchair parking brake is actuated again to stabilize the wheelchair. In this state, the hooks 04, 04 are removed from the rear, and the hooks 03, Remove 03. Thereafter, the parking brake of the wheelchair is released and the vehicle is moved outside the vehicle.
[0004]
[Problems to be solved by the invention]
As described above, when a wheelchair is fixed and released from the conventional technique, it is necessary to move the wheelchair back and forth, bend, hook four wheel hooks on the wheelchair, and remove it. Improvements in workability are desired because of its complexity and time.
In addition, in order to stabilize the wheelchair during this work and improve workability, it is necessary to activate the parking brake of the wheelchair when hooking and removing, whereas the front fixing belt is When pulling and tensioning the front and rear fixing belts 01 and 02 or loosening the rear fixing belt to remove the hook 04, it is necessary to release the parking brake and move the wheelchair. Since the parking brake is actuated or released, the work is complicated and time-consuming, and improvement of workability is desired.
[0005]
The present invention has been made paying attention to the above-mentioned conventional problems, and aims to improve the workability of the wheelchair fixing work and the fixing releasing work.
[0006]
[Means for Solving the Problems]
  In order to achieve the above-described object, the invention according to claim 1 includes a pair of front through anchors provided on the left and right of a wheelchair fixing position set on a floor of a vehicle, and an intermediate position between the wheelchair fixing positions. A pair of middle through anchors provided on the left and right sides of the wheelchair, a pair of rear through anchors provided on the left and right of the wheelchair fixing position, the front through anchors, the middle through anchors, and the rear through anchors. A front hook that can be engaged with the wheelchair is provided at the part, and a pair of left and right belts that are provided with a rear hook that can be engaged with the wheelchair at the rear end, and can be slid forward and backward to the wheelchair fixing position. The belt is tensioned by pulling between the through anchors in the belt.And restrains relative movement with the belt.A slide member and a drive means for sliding the slide member are provided.
[0007]
  As described in claim 2, in the wheelchair fixing device according to claim 1, the belt may be provided with a length adjusting means for adjusting the overall length of the belt. Further, as in the invention according to claim 3, in the wheelchair fixing device according to claim 1 or 2, the front hook and the rear hook are connected via a link member, and the link member is expanded and contracted. It may be configured so that the pitch between the front hook and the rear hook can be changed. Furthermore, as described in claim 4, a spring for urging the link member in the contracting direction may be provided. Further, as described in claim 5, claims 1 to 4 are provided.either 1 OneIn the wheelchair fixing device described above, the front hook and the rear hook may be configured to be detachable from the link member.
[0008]
  Further, as described in claim 6, claims 1 to 5 are provided.either 1 OneIn the wheelchair fixing device according to claim 1, a slider formed by penetrating a belt guide hole through which the slide member is inserted in a state where the intermediate portion of the belt is folded, and a belt drawn out from the slide guide hole Inserted between the belts of the folded portion, and in the vicinity of the opening of the belt guide hole, the holding position where the belt is sandwiched between the slider and the release position where the belt is released away from the opening of the belt guide hole. The belt shaft supported by the slider so as to be relatively movable, and a spring that urges the belt shaft toward the release position may be used. According to a seventh aspect of the present invention, in the wheelchair fixing device according to the sixth aspect, the belt shaft is attached to a retainer that is slidably supported with respect to the slider, and the retainer is biased by the spring. Thus, the belt shaft may be biased. Furthermore, it is preferable that at least a portion of the belt shaft that supports the belt is rotatably supported with respect to the retainer. Further, as described in claim 9, claims 1 to 8 are provided.either 1 OneIn the wheelchair fixing device according to claim 1, the drive means is formed to penetrate the slide member in the front-rear direction, and is threaded into the screw hole so as to be engaged with the screw member and extend to the vehicle floor in the front-rear direction. It is good also as a means provided with the screw shaft and the motor which gives a driving force to this screw shaft. Further, as described in claim 10, claims 1 to 9 are provided.either 1 OneThe wheelchair fixing device according to claim 1, wherein the slide member includes a nut screw member in which the screw hole is formed, and a pair of the slide main bodies are arranged on the left and right sides of the nut screw member, and the nut screw member and the slider It is good also as a structure connected with the base, and supported so that rotation with respect to the said slider base in the left-right direction is possible. In addition, as described in claim 11, in the wheelchair fixing device according to claim 9 or 10, a first position detection for detecting immediately before a movable limit when the slide member moves to a side of applying tension to the belt. A switch and a second position detection switch for detecting immediately before the limit of movement when the slide member moves to the side opposite to the side where the belt is tensioned, and when the first position detection switch detects the slider It is good also as a means which provided the motor control circuit which lights an indicator lamp.
[0009]
Operation and effect of the invention
In the present invention, when a wheelchair is fixed, first, the wheelchair is arranged at a predetermined position with respect to the wheelchair fixing device. At this time, it is preferable to operate the parking brake of the wheelchair.
Next, with the belt slackened, the front hook and the rear hook are separated from each other back and forth to engage the wheelchair. At this time, since the belt is slack, the front hook and the rear hook can be engaged without requiring an operation of moving the wheelchair such as moving the wheelchair after hooking one hook.
Next, the slide member is slid by the driving means in a direction in which the distance between the slide member and the front through anchor and the middle through anchor or the distance between the slide member and the rear through anchor and the middle through anchor is separated. As a result, the slack of the belt is removed, and the wheelchair is fixed to each anchor with the tension of the belt.
[0010]
Next, when releasing the fixation, the slide member is slid in the reverse direction by the driving means. This causes slack in the belt, so the front hook and the rear hook are removed from the wheelchair. Therefore, the wheelchair can be moved.
[0011]
  As explained above, in the present invention, the front hook and the rear hook are connected by a single belt, and the front and the rear can be fixed simultaneously by loosening or tensioning the belt. When fixing a wheelchair, it is not necessary to move the wheelchair in the middle of fixing and to operate and release the parking brake as before, improving operability and fixing the wheelchair in a short time And the effect that it can be made to cancel fixation is acquired.In addition, since the relative movement between the slide member and the belt is restricted, the wheelchair can be firmly fixed.
[0012]
In addition to the above-described effects, the invention according to claim 2 is also provided with a length adjusting means when the interval for engaging the front hook and the rear hook with respect to the wheelchair is too wide or too narrow. By adjusting the overall length of the belt by operating, it is possible to correspond to the optimal state, the relative belt length is too long and the desired tension state cannot be obtained and the wheelchair cannot be fixed Therefore, it is possible to prevent a problem that the relative length of the belt is insufficient and the front and rear hooks cannot be engaged with each other and cannot be fixed, and the usability can be improved accordingly.
[0013]
In the invention according to claim 3, when the front hook and the rear hook are engaged with the wheelchair, the front hook and the rear hook connected by the link member are connected to the rear side or the front side of the wheelchair. Can be engaged simultaneously.
Further, when the front hook and the rear hook are engaged with the wheelchair, the distance between the front hook and the rear hook can be adjusted to the optimum distance by adjusting the total length of the link member.
Thus, in the invention according to claim 3, the front hook and the rear hook can be connected, and both hooks can be simultaneously engaged with the wheelchair. And it becomes unnecessary to turn to the back side. Therefore, the workability can be further improved and the effect of fixing and releasing the wheelchair in a short time can be obtained.
Furthermore, in the invention according to claim 4, at the time of fixing, one of the front hook and the rear hook is first engaged with the wheelchair, and the other hook is pulled to the optimum position so as to extend the link member. Hang on. For example, when working from the rear side of the wheelchair, first, the front hook is hooked on the front part of the wheelchair, and then the rear hook is pulled to the engagement position on the rear part of the wheelchair and hooked. After this engagement is performed, the link member is urged in the contraction direction, and the urging force maintains the hooks in an engaged state, so that the engagement can be ensured.
When both hooks are removed from the wheelchair, the link member is contracted to the shortest dimension and can be stored compactly.
In the invention according to claim 5, the state is changed to a state in which the front hook and the rear hook are integrally connected by the link member and a state in which the connection of the front hook and the rear hook by the link member is released. Can do. Therefore, according to the shape of the wheelchair, in a wheelchair having a shape in which the front hook and the rear hook cannot be engaged in a connected state, the hooks can be disconnected and engaged independently. . Therefore, usability can be improved.
[0014]
In the invention described in claim 6, the intermediate portion of the belt is inserted in a state of being folded over the belt guide hole of the slider, and the belt shaft is inserted into the folded portion. Normally, the belt shaft is urged to the release position by the urging force of the spring and is disposed at a position away from the opening of the belt guide hole, and no restraining force is generated on the belt.
In this state, when the front hook and the rear hook are engaged with the wheelchair and the slide member is slid, the belt shaft slides against the urging force of the spring as the tension of the belt increases, and each through anchor is When the belt is no longer loosened between the belt and the slide member, the belt shaft reaches the clamping position, and is strongly pressed around the slider belt guide hole to clamp the belt therebetween. Therefore, the belt is fixed to the slide member, and the wheelchair is firmly fixed.
When releasing the wheelchair, when the slide member is slid, if the belt loosens between each through anchor and the slide member, the belt shaft slides toward the release position by the biasing force of the spring, This eliminates the binding force on the belt. Accordingly, the wheelchair can be unlocked.
[0015]
In the invention according to claim 7, when the belt shaft is slid between the release position and the clamping position as described above, the belt shaft fixed to the retainer by sliding the retainer with respect to the slider is combined. To be slid. In the case of such a structure, since the spring may be provided between the slider and the retainer, the degree of freedom of installation of the spring is higher than when the urging force is directly applied to the belt shaft. According to the eighth aspect of the present invention, when the belt shaft slides from the release position to the clamping position as the belt is tensioned, one side is loose on both sides of the belt across the belt shaft. If the degree is different, the belt shaft rotates to the tension side. In other words, the belt shaft is rotated so that the belt is loosened uniformly, and therefore, when the belt shaft is moved to the clamping position and the belt is fixed, the belt is not easily loosened, and the operability is improved. It is excellent.
According to the ninth aspect of the present invention, when the slide member is slid in the direction in which the wheelchair is fixed, when the screw shaft is rotated by driving the motor, the slide member is formed with a screw hole engaged with the screw shaft. Is relatively moved with respect to the screw shaft, and tension of the belt is obtained.
In the invention according to claim 10, when the screw shaft is rotated by driving the motor, the nut screw member in which the screw hole is formed moves relative to the screw shaft, and the nut screw member moves along with the movement of the nut screw member. The pair of sliders arranged on the left and right of the nut screw member move simultaneously. At this time, since the slider is rotatably supported with respect to the slider base connecting the nut screw member and the slider, when a force is applied to the belt in the twisting direction, the slider is moved to the slider base. It is possible to prevent the belt from being twisted by rotating with respect to the base.
[0016]
In the eleventh aspect of the present invention, when a desired tension is not applied to the belt when the motor is driven to move the slide member in a direction in which the belt is tensioned, Move to the position of 1 position detection switch and turn on this switch. With the turning on of the first position detection switch, the motor control circuit turns on the indicator lamp. Therefore, the operator can know that sufficient belt tension is not obtained by lighting the indicator lamp.
In this case, according to the second aspect of the present invention, the motor is once reversely driven to loosen the belt, the length adjusting means shortens the entire length of the belt, and then the motor is driven again to apply tension to the belt. As a result, it is possible to obtain a tension stronger than the previous time.If the indicator light does not light up at this time, normal belt tension is obtained, and if the indicator light turns on again, Repeat the above operation until the indicator light stops lighting.
As described above, according to the present invention, it is possible to know whether or not a desired tension has been obtained by turning on the indicator lamp, thereby improving usability.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
First, the structure of the wheelchair C fixed with the wheelchair fixing device of this Embodiment is demonstrated.
3A and 3B are perspective views showing an outline of the configuration of the wheelchair C, in which FIG. 3A is a perspective view from an oblique front, and FIG. 3B is a perspective view from an oblique rear.
The wheelchair C is very general, and the left and right main frames 80, 80 are connected to the left and right main frames 80, 80, and the chair frame is separated from the left and right by a predetermined distance. A substantially X-shaped folding link 81, 81 that forms a folded state in which 80, 80 are close to each other, a seat member 82 that is spanned between the main frames 80, 80 to form a seating surface, and the main frame 80 , 80, a seat back member 83 forming a backrest surface, a handle 84 protruding rearward from each main frame 80, a caster 88 provided at the lower front portion of the main frame 80, And a wheel 89 provided at the lower rear portion of the main frame 80.
The main frame 80 is provided with longitudinal pipes 80a and 80b at the front and rear, and a pair of left and right footrests 80f and 80f are attached to the lower part of the front end.
Further, the wheelchair C is provided with a brake lever 84b for operation by a caregiver who pushes the wheelchair C later on the handle 84, and a wheelchair C seater or the like operates on the side of the wheel 89 when the vehicle stops. A parking brake lever 87 is attached.
[0018]
Next, the wheelchair fixing device according to the embodiment will be described.
The wheelchair fixing device according to the embodiment is installed on a floor F of a so-called one-box car. This installation position is, for example, a position behind the driver's seat or passenger's seat, and is a position where the wheelchair C can be fixed by loading the wheelchair C on the floor from a back door or side door (not shown).
[0019]
In the floor F, a rectangular recess 1 that is long in the front-rear direction is formed at a position one step below the general surface as indicated by a dotted line in FIG. 4. The wheelchair fixing device according to the embodiment is installed in the recess 1. ing. The concave portion 1 is covered with a panel 2, and a pair of left and right lids 3 are provided on the panel 2, and each lid 3 is supported by a pair of hinges 4 and 4 so as to be opened and closed.
Therefore, when the wheelchair fixing device is not used, the wheelchair fixing device is covered with the panel 2 and the lid 3 and is completely hidden under the floor F so that the components are not exposed on the floor F. It is configured to be used in the same manner.
[0020]
FIG. 1 is a perspective view showing a wheelchair fixing device according to an embodiment.
The apparatus includes a pair of left and right front through anchors 11 attached to the front end of the bottom surface 1a of the recess 1, and a rear position of the front through anchors 11 and a position closer to the front of the bottom surface 1a of the recess 1. Three pairs of through anchors 11, 12, 13 are provided, which are a pair of left and right middle through anchors 12, 12 attached and a pair of left and right rear through anchors 13 attached to the rear end of the bottom surface 1 a of the recess. Yes. Each through anchor 11, 12, 13 includes a metal or resin ring 14 and a metal, resin or leather bracket 15 for attaching the ring 14 to the bottom surface 1a. The bracket 15 can swing around a pin. Is attached.
[0021]
A pair of belts 16 are provided through the rings 14 of the front through anchor 11, the middle through anchor 12 and the rear through anchor 13, and each belt 16 has a substantially S-shaped front at the front end. A part hook 21 is attached, while a substantially S-shaped rear hook 22 is attached to the rear end. Further, a belt adjuster 17 as a length adjusting means is provided in the vicinity of the rear end portion of each belt 16 so that the total length of each belt 16 can be adjusted.
[0022]
A screw shaft 31 having a screw formed on the outer periphery constituting the driving means extends in the front-rear direction at the center of the recess 1 between the belt 16 arranged on the left and right and the anchors 11, 12, 13. The rear end portion of the screw shaft 31 is engaged with a worm gear (not shown) of the motor 32, while the front end portion of the screw shaft 31 is attached to a bracket 33 (see FIG. 6) erected in the recess 1. It is rotatably supported.
[0023]
A slide member 40 is supported at an intermediate portion of the screw shaft 31. As shown in FIG. 6, the slide member 40 includes a metal or resin nut screw member 42 having a screw hole 41 through which the screw shaft 31 is engaged, and a bolt 43a attached to the nut screw member 42. A metal or resin slider base 43 that is fixed and extends to the left and right, and a metal or resin slider 44 that is fixed to the lower left and right sides of the slider base 43 with bolts 43b. As shown in the sectional view of FIG. 7, a collar 43f is provided between the outer periphery of the bolt 43b and the slider base 43, and the slider 44 can be rotated around the bolt 43b with respect to the slider base 43. It is supported.
[0024]
Further, as shown in the sectional view of FIG. 7, a belt guide hole 44a having a small vertical dimension and a width through which the belt 16 can be inserted is formed in the middle portion of each slider 44 so as to penetrate in the front-rear direction. ing.
Further, as shown in FIG. 8, a pair of retainers 45 are supported on each slider 44 so as to be slidable in the front-rear direction. That is, as shown in FIGS. 8 and 10, the retainer 45 is formed in a substantially L-shaped cross section by a side plate 45a and a support plate 45b, as shown in FIGS. 8 and 10, and the end of the side plate 45a is long in the front-rear direction. A hole 45c is formed vertically, and a pin 45d inserted through the elongated hole 45c is fixed to a side surface of the slider 44, and the retainer 45 is supported slidably forward and backward with respect to the slider 44.
[0025]
Further, a belt shaft 46 is attached to a portion of the side plate 45a close to the support plate 45b, extending in the left-right direction. The belt shaft 46 has an intermediate portion formed in a square cross section and both end portions formed in a cylindrical shape. In the present embodiment, it is assumed that the belt shaft 46 is rotatably attached to the retainer 45. Of course, the belt shaft 46 may be fixed to the retainer 45. As shown in FIG. 9, it is preferable that the portion is provided in such a direction as to be inserted into the belt guide hole 44a. As shown in FIG. 9, the position where the belt shaft 46 is disposed so as to sandwich the belt 16 with the slider 44 is referred to as a clamping position.
Further, one end of a spring 47 is seated on the support plate 45 b, and the other end of the spring 47 is seated on the bottom surface of a spring support hole 44 f formed in the slider 44. 12, the belt shaft 46 is slidably biased in the direction away from the slider 44 as shown in FIG. 12, and the belt shaft 46 is not separated from the slider 44 and sandwiches the belt 16 as shown in FIG. Is called the release position.
A portion of the belt 16 between the front through anchor 11 and the middle through anchor 12 is inserted into the belt guide hole 44a of the slider 44 as shown in FIG. As shown in FIG. 3, the belt shaft 46 is wound around the outer periphery of the belt shaft 46 by being inserted into the belt guide hole 44a in a folded state.
[0026]
Returning to FIG. 6, a rear end detection switch (first position detection switch) 35 that is turned on when the nut screw member 42 moves to a rear end position in the vicinity of the motor 32 is installed at a position in the vicinity of the motor 32. On the other hand, the bracket 33 is provided with a front end detection switch (second position detection switch) 36 that is turned on when the nut screw member 42 moves to the front end position in the vicinity of the bracket 33.
[0027]
The front end detection switch 36 and the rear end detection switch 35 are connected to a motor control circuit 37 shown in FIG. 15 that controls driving of the motor 32. The motor control circuit 37 includes a fixing switch 38 and a fixing release switch 39 which are installed on a vehicle body side wall or a ceiling outside the position around the position where the concave portion 1 is provided and are manually operated by a user. Are connected to each other, and an indicator lamp 34 is provided in the vicinity thereof.
[0028]
Returning to FIG. 1, the front hook 21 and the rear hook 22 are connected by a link member 50.
As shown in FIG. 13, the link member 50 includes a front bracket 51 fixed to the front hook 21 and formed in a substantially L-shaped cross section (see FIG. 14), and an insertion hole formed in the front bracket 51. A front link 53 in which a thumbscrew 52 inserted into the front end is screwed to the front end, and a rear link connected to the front link 53 by two sets of pins 55 and an elongated hole 56 so as to be movable in the axial direction. 54 and a rear bracket 57 fixed to the rear end portion of the rear link 54 by a thumbscrew 52 in the same manner as the front bracket 51, and the front and rear directions of the hooks 21 and 22. The pitch of the front link 53 and the rear link 54 can be expanded and contracted within a range of expansion and contraction. Further, a spring 58 is provided between the front bracket 51 and the rear link 54 and biases the link member 50 in a contracting direction. Moreover, if the thumbscrew 52 is removed, the front hook 21 and the rear hook 22 can be made independent.
Note that the wheelchair fixing device having the above-described configuration is accommodated in the recess 1 and, as shown in FIG. 5, the through anchors 11, 12, 13, and belts 16 just below the opening 5 that is opened and closed by the lid 3. The front hook 21 and the rear hook 22 are arranged, the screw shaft 31 extends in the front-rear direction between the openings 5 and 5, and the slider 44 is arranged to move along the openings 5 and 5. ing.
[0029]
Next, an operation procedure when the wheelchair C is fixed by the wheelchair fixing device of the present embodiment will be described.
(When not in use)
First, when the wheelchair fixing device is not used, the recess 1 is covered with the panel 2 and the lids 3 and 3 as shown in FIG. 4, and the wheelchair fixing device is completely accommodated inside thereof. Therefore, the portion where the wheelchair fixing device is set can also be used as the floor F. Moreover, if a folding chair is provided on the vehicle side wall of the installation site, this chair can also be used.
[0030]
(When wheelchair is fixed)
A procedure when the wheelchair C is placed on the vehicle and fixed by the wheelchair fixing device of the present embodiment will be described.
First, the wheelchair C is placed on the floor F using a lifting device (not shown) or manually. Further, before and after that, as shown in FIG. 5, the lids 3 and 3 are opened to expose the front hook 21 and the rear hook 22 of the wheelchair fixing device to the passenger compartment. At this time, the front hook 21 and the rear hook 22 are connected by the link member 50 as shown in FIG.
[0031]
Next, the wheelchair C is moved onto the wheelchair fixing device so that the casters 88 and the wheels 89 are arranged on the left and right of the plate 2 covered with the recess 1, and the wheelchair C is placed on the floor with the parking brake set in a braking state. Secure to.
An operator such as a caregiver who moves the wheelchair C described above generally moves the wheelchair C by grasping the handle 84 from the rear side of the wheelchair C and operates the parking brake lever 87.
Next, from that state, the worker remains on the rear side of the wheelchair C, and the front hook 21 and the rear hook 22 connected together by the link member 50 and integrated with each other are operated by one operation. As shown in Fig. 2, it is hooked on the vertical pipes 80a and 80b.
In this case, in this embodiment, from the state where the link member 50 is contracted by the spring 58 to be compact, first, the front hook 21 on the side far from the working position is hooked on the vertical pipe 80a, and the link member 50 is moved. The rear hook 22 is pulled backward while being stretched against the urging force of the spring 58 and hooked on the vertical pipe 80b. In the state where the hooking operation is completed, the link member 58 is contracted by the urging force of the spring 58, and the engagement state of both the hooks 21 and 22 is maintained in a state where the link member 58 is tensioned by the urging force.
When the link member 50 is not provided with the spring 58, the length of the link member 50 is optimally adjusted manually. In addition, when the wheelchair C to be fixed in advance is determined, the total length of the link member 50 may be fixed to the optimum dimension using a bolt and nut or the like. When the distance between the hooks 21 and 22 cannot be adjusted to an optimum dimension when fixing a wheelchair or the like having another structure, the thumbscrew 52 is loosened and one of the hooks 21 and 22 is detached from the link member 50. Remove and hook separately.
[0032]
Next, when the fixed switch 38 is turned on and the motor 32 is driven, the screw shaft 31 rotates, the nut screw member 42 relatively moves rearward, and the slide member 40 moves rearward.
At the start of the movement, as shown in FIG. 12, in the slider 44, the retainer 45 is urged by the spring 47, and the belt shaft 46 is disposed at the release position away from the slider 44. The slider 44 moves rearward while maintaining this state, and along with this, the slack of the belt 16 is gradually removed. In this embodiment, since the belt shaft 46 is rotatable, if there is a difference in tension between the front through anchor 11 side and the middle through anchor 12 side of the belt 16, the belt As the shaft 46 rotates, the tension of the belt 16 increases almost uniformly.
When the slack of the belt 16 before and after the slider 44 disappears, the retainer 45 and the belt shaft 46 integral therewith move relative to the slider 44 against the biasing force of the spring 47 due to the tension.
When the belt shaft 46 is fixed to the retainer 45, the retainer 45 and the belt shaft 46 do not move relative to the slider 44 until there is no slack forward or rearward than the slider 44. When the slack on one side of the belt 16 before and after the slider 44 disappears, the retainer 45 and the belt shaft 46 integrated therewith move relative to the slider 44 against the biasing force of the spring 47 due to the tension. This movement is performed until the slack on the other side of the belt 16 before and after the slider is eliminated.
[0033]
Thereafter, when both the front and rear slacks of the slider 44 disappear in the belt 16, the belt 16 pushes the retainer 45 and the belt shaft 46 toward the slider 44 by the tension, and the belt shaft 46 is shown in FIGS. As described above, the belt 16 is sandwiched between the slider 44 and the belt shaft 46 and the belt 16 is fixed by reaching the clamping position. In this case, as shown in the drawing, the belt shaft 46 is inserted such that the corner portion thereof is inserted into the belt guide hole 44a or is arranged so that one end surface thereof closes the belt guide hole 44a. The belt 16 is strongly sandwiched so that the belt 16 is not displaced.
[0034]
When the motor 32 is further driven in this state, the motor control circuit 37 detects the lock of the motor 32 and stops the driving of the motor 32.
Therefore, in this state, the belt 16 is pulled with a strong tension, whereby the wheelchair C is fixed.
At this time, since the front hook 21 and the rear hook 22 are pulled at the same time, there is no need to move the wheelchair C from the position where the wheelchair C is first fixed, and both the hooks 21 and 22 can be hooked at the same time. All the work is done by only the operation from the rear side, the wheelchair fixing work is easy, and the work time is short.
[0035]
(When tension is insufficient)
An operation procedure when the tension of the belt 16 is weak when the fixing operation is performed will be described.
When the amount of slack of the belt 16 is too large at first, there is a case where sufficient tension cannot be obtained even if the slider 44 is moved. In such a case, when the slider 44 moves backward by driving the motor 32, the nut screw member 42 pushes the rear end detection switch 35. In this case, the motor control circuit 37 turns on the rear end detection switch 35. Thus, it is detected that the slider 44 has moved to the rear movable limit, and the drive of the motor 32 is stopped and the indicator lamp 34 is turned on.
[0036]
In this way, when the indicator lamp 34 is lit, the worker once presses the fixing release switch 39 to drive the motor 32 in the reverse direction. Thereafter, when the slider 44 moves to the front end portion of the screw shaft 31 and the nut screw member 42 turns on the front end detection switch 36, the motor control circuit 37 stops driving the motor 32.
[0037]
When the slider 44 moves to the front end and the belt 16 is loosened in this way, the operator adjusts the belt adjuster 17 to shorten the overall length of the belt 16 and then turns on the fixing switch 38 again. The slider 44 moves the publication in the procedure at the time of fixation, and the wheelchair C is fixed. When the length of the belt 16 is insufficient again, the above-described indicator lamp 34 is turned on. In this case, the above-described operation is repeated until the indicator lamp 34 stops lighting.
[0038]
(When fixed)
Next, a procedure for releasing the fixation of the wheelchair C will be described.
When the fixing release switch 39 is turned on, the motor 32 is driven in reverse and the slider 44 moves forward. Along with this, the retainer 45 is moved toward the release position by the urging force of the spring 47, the belt shaft 46 is separated from the slider 44, and the belt 16 is loosened. When the motor 32 continues to rotate in the reverse direction, the slider 44 moves to the vicinity of the front end of the screw shaft 31 and turns on the front end detection switch 36. In conjunction with this, the reverse drive of the motor 32 is stopped.
[0039]
In this state, since the belt 16 is slack, the front hook 21 and the rear hook 22 can be detached from the wheelchair C from the rear of the wheelchair C.
In this way, the fixing release operation can be performed only from the rear side of the wheelchair C.
[0040]
(If the wheelchair is different)
If the wheelchair is different from the one described above, the front hook 21 and the rear hook 22 integrated by the link member 50 cannot be hooked on the wheelchair C at the same time, and the thumbscrew 52 of the link member 50 is removed. The front hook 21 and the rear hook 22 are made independent and hooked on the frame of the wheelchair C separately. The subsequent work is the same as described above.
Thus, even when the shape of the wheelchair C is greatly different, if the front hook 21 and the rear hook 22 can be hooked, they can be fixed.
[0041]
As described above, both the fixing operation and the unlocking operation of the wheelchair C need only be performed from the rear of the wheelchair C, and it is not necessary to move the wheelchair C when the belt 16 is pulled. The effect that it can plan and can work in a short time is acquired.
Further, since the front hook 21 and the rear hook 22 are connected by the link member 50, both the hooks 21 and 22 can be hooked simultaneously by one operation, and workability can be improved. In addition, since the length of the link member 50 can be adjusted, this workability can be improved corresponding to wheelchairs C of various sizes. In addition, since the spring 58 is provided and the link member 50 is urged in the contraction direction, it is housed in a compact manner and has excellent operability.
Further, since the link member 50 and the hooks 21 and 22 can be disconnected by loosening the thumbscrew 52, a wheelchair of a size or shape that cannot be handled by the pitch change by the link member 50 described above is also reliable. Can be fixed to.
[0042]
Further, the rear end detection switch 35 and the indicator lamp 34 are provided, and when the desired tension by the belt 16 cannot be obtained, the indicator lamp 34 is turned on to notify the user of this, thereby preventing uncertain fixing. Can do.
Furthermore, since the belt 16 is fixed by the slider 44, the retainer 45 and the belt shaft 46 that can move relative to the slider 44, the belt 16 can be fixed securely with a simple configuration. . In the present embodiment, the belt shaft 46 that presses the belt 16 against the slider 44 is formed in a square cross-sectional shape, so that the belt 16 is strongly placed between the plane of the belt shaft 46 and the entrance portion of the belt guide hole 44a. Thus, the belt 16 can be securely fixed. In addition, since the belt shaft 46 is rotatably supported by the retainer 45, the belt shaft 46 is rotated to the side where the tension is strong according to the tension state of the belt 16, and the tension state of the belt 16 is kept uniform. It is difficult to cause a situation where the other side is slack and the other is tensioned, and the operation quality is excellent.
Further, since the slider 44 is provided with a collar 43f around the bolt 43b so as to be rotatable around the bolt 43b, and the through anchors 11, 12, 13 can also be swung by the bracket 15, each through anchor is provided. 11, 12, 13 and the hooks 21, 22 are displaced in the vehicle width direction, the slider 44 rotates around the bolt 43 b and each through anchor 11, 12, 13 swings. The belt 16 is not twisted, and it is possible to prevent the occurrence of malfunction due to the twist of the belt 16 and the decrease in durability.
[0043]
In addition, since the wheelchair fixing device is installed in the recessed portion 1 and is covered with the lid 3 and the plate 2 when not in use, this portion can be used as substantially the same surface as the floor F. Since there are no protrusions, it is easy to use.
[0044]
As mentioned above, although embodiment was described with drawing, this invention is not limited to this embodiment.
For example, in the embodiment, the slide member 40 is moved backward at the time of fixing in the embodiment, but may be moved forward at the time of fixing. In this case, the slider 44 is provided between the middle through anchor 22 and the rear through anchor 23.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a wheelchair fixing device according to an embodiment.
FIG. 2 is a perspective view showing a use state of the wheelchair fixing device according to the embodiment.
FIG. 3 is a perspective view showing a wheelchair.
FIG. 4 is a perspective view showing an installation site of the wheelchair fixing device of the embodiment on the vehicle floor.
FIG. 5 is a perspective view showing an installation site of the wheelchair fixing device of the embodiment on the vehicle floor.
FIG. 6 is a perspective view showing drive means in the wheelchair fixing device according to the embodiment.
FIG. 7 is a cross-sectional view of a main part of the wheelchair fixing device according to the embodiment.
FIG. 8 is a perspective view of a main part of the wheelchair fixing device according to the embodiment.
FIG. 9 is a cross-sectional view of a main part of the wheelchair fixing device according to the embodiment.
FIG. 10 is a plan view of a main part of the wheelchair fixing device according to the embodiment.
FIG. 11 is a side view of a main part of the wheelchair fixing device according to the embodiment.
FIG. 12 is a side view of a main part of the wheelchair fixing device according to the embodiment.
FIG. 13 is a perspective view of a main part of the wheelchair fixing device according to the embodiment.
FIG. 14 is a front view of a main part of the wheelchair fixing device according to the embodiment.
FIG. 15 is a circuit diagram of a main part of the wheelchair fixing device according to the embodiment.
FIG. 16 is a perspective view showing a conventional technique.
[Explanation of symbols]
1 recess
1a Bottom
2 panels
3 lid
4,4 Hinge
11 Front through anchor
12 Chubu Through Anchor
13 Rear through anchor
14 rings
15 Bracket
16 belt
17 Belt Adjuster
21 Front hook
22 Rear hook
31 Screw shaft
32 motor
33 Bracket
35 Rear end detection switch
36 Front end detection switch
37 Motor control circuit
38 Fixed switch
39 Unlock switch
40 Slide member
41 holes
42 Nut screw member
43 Slider base
43a bolt
43b bolt
43f color
44 Slider
44a Belt guide hole
44f Spring support hole
45 Retainer
45a Side plate
45b Support plate
45c oblong hole
45d pin
46 Belt shaft
47 Spring
50 Link member
51 Front bracket
53 Front link
54 Rear link
55 pins
56 Slotted hole
57 Rear bracket
58 Spring
80 mainframe
80a, 80b Vertical pipe
80f footrest
81 Folding link
82 Sheet material
83 Seat back member
84 Handle
84b Brake lever
87 Parking brake lever
88 Casters
89 wheels
F floor

Claims (11)

A pair of front through anchors provided on the left and right front of the wheelchair fixed position set on the floor of the vehicle;
A pair of middle through anchors provided on the left and right of the middle part of the wheelchair fixing position;
A pair of rear through anchors provided on the left and right of the wheelchair fixing position;
A front hook that is inserted through the front through anchor, the middle through anchor, and the rear through anchor and engages with the wheelchair is provided at the front end, and a rear hook that can engage with the wheelchair is provided at the rear end. A pair of left and right belts provided;
A slide member that is slidable back and forth at the wheelchair fixed position, pulls between through anchors in the belt, applies tension to the belt, and restrains relative movement with the belt, and a drive for sliding the slide member Means,
A wheelchair fixing device comprising:   The wheelchair fixing device according to claim 1, wherein the belt is provided with length adjusting means for adjusting a total length of the belt.   The front hook and the rear hook are connected via a link member, and the link member is configured to be extendable and configured to be able to change the pitch between the front hook and the rear hook. The wheelchair fixing device according to claim 1 or 2, characterized by the above-mentioned.   The wheelchair fixing device according to claim 3, wherein the link member is provided with a spring that urges the link member in a contracting direction. The wheelchair fixing device according to any one of claims 1 to 4, wherein the front hook and the rear hook are configured to be detachable from a link member. The slide member has a slider formed by penetrating a belt guide hole that is inserted in a state where the intermediate portion of the belt is folded.
The clamping position and the opening of the belt guide hole inserted between the belts of the folded portion of the belt drawn out from the slide guide hole and sandwiching the belt between the slider and the opening of the belt guide hole A belt shaft supported by the slider so as to be relatively movable to a release position where the belt is released away from the belt;
The wheelchair fixing device according to any one of claims 1 to 5, further comprising: a spring that urges the belt shaft toward the release position.   7. The belt shaft is attached to a retainer that is slidably supported with respect to a slider, and the belt shaft is biased by biasing the retainer by the spring. Wheelchair fixing device.   The wheelchair fixing device according to claim 7, wherein at least a portion of the belt shaft that supports the belt is rotatably supported with respect to the retainer. The drive means includes a screw hole formed through the slide member in the front-rear direction, a screw shaft that is engaged with the screw hole and extends in the front-rear direction on the vehicle floor, and the screw shaft. A wheelchair fixing device according to any one of claims 1 to 8, further comprising a motor that applies a driving force. The slide member includes a nut screw member in which the screw hole is formed, and a pair of the slide main bodies are disposed on the left and right sides of the nut screw member, and are connected by a nut screw member and a slider base. The wheelchair fixing device according to any one of claims 1 to 9, wherein the wheelchair fixing device is supported so as to be rotatable in a left-right direction with respect to the slider base. A first position detection switch for detecting immediately before the movable limit when the slide member moves to a side where tension is applied to the belt;
A second position detection switch for detecting immediately before the limit of movement when the slide member moves to the side opposite to the side where the tension is applied to the belt;
Is provided,
The wheelchair fixing device according to claim 9 or 10, further comprising a motor control circuit that turns on an indicator lamp when the first position detection switch detects a slider.

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