JP5387427B2 - Wheelchair fixing device - Google Patents

Description

  The present invention comprises a string-like left and right retaining member provided with a hook, and a reel provided on the vehicle side and configured to wind up the retaining member, and each hook of the left and right retaining member And a wheelchair fixing device for fixing the wheelchair to the vehicle by rotating the reel in the winding direction of the retaining member in this state.

A technique related to the wheelchair fixing device described above is disclosed in Patent Document 1.
This wheelchair fixing device is configured to wind up the left retaining member with the left reel and wind up the right retaining member with the right reel. The left and right reels are configured to be able to rotate in the winding direction at an equal speed by the action of one motor and a gear mechanism. For this reason, by hooking the left and right retaining members on the wheelchair and rotating the left and right reels in the winding direction by the motor and the gear mechanism, the left and right retaining members can be retracted by an equal amount and the wheelchair can be fixed. .

JP 2008-289844

  However, when the wheelchair is close to the left reel or one side of the right reel, or when the wheelchair is slightly tilted to the left or right, As a result, the tension of the retaining member varies and the wheelchair cannot be fixed to the vehicle in a well-balanced manner. As a result, there arises a problem that the wheelchair is greatly shaken while the vehicle is traveling.

  The present invention has been made to solve the above-described problems, and the problem to be solved by the present invention is to enable the wheelchair to be fixed to the vehicle in a well-balanced manner so that the tensions of the left and right retaining members are equal. It is to be.

The above-described problems are solved by the inventions of the claims.
According to a first aspect of the present invention, there is provided a string-like left and right retaining member provided with a hook, and a reel provided on a base fixed to a vehicle floor and configured to be able to wind the retaining member. A wheelchair fixing device for hooking the hooks of the left and right holding members to the left and right sides of the wheelchair, and rotating the reel in the winding direction of the holding members in this state to fix the wheelchair to the vehicle floor. A sliding pulley on which a middle portion of the left retaining member is hung from the right side and a middle portion of the right retaining member is hooked from the left side, and the base is provided, and the sliding pulley is moved to the left, or a tension balancing mechanism and a bracket horizontally supported so as to slide in the right direction, the rollable one of the right and left hold back member And it made a reel, the other one of the base end portion of the left and right cocked member has a fixing member for fixing to the base, the tension of the right cocked member than the tension of the left hold back member Is larger, the sliding pulley is pulled by the right retaining member and slides to the right. When the tension of the left retaining member is greater than the tension of the right retaining member, the sliding pulley is The sliding pulley is pulled by the holding member and slides leftward, and the sliding pulley is held at a position where the tensions of the right and left holding members are equal .

For example, when fixing the base end of the left retaining member to the vehicle side by a fixing member and winding the right retaining member with a reel, when the left and right hooks are hung on a wheelchair and the reel is rotated in the winding direction, The sliding pulley is pulled in the right direction by the tension when the right retaining member is pulled. As a result, the sliding pulley slides to the right and the left retaining member is retracted. That is, when the reel rotates in the winding direction, the right holding member is drawn, and the sliding pulley is pulled right by the tension of the right holding member, and the left holding member is drawn. Then, by stopping after the reel has rotated by a predetermined angle, the sliding pulley is held at a position where the tensions of the left and right retaining members are balanced, and the wheelchair is fixed to the vehicle.
That is, since the tension of the right and left retaining members becomes equal in a state where the wheelchair is fixed to the vehicle, the wheelchair can be fixed to the vehicle with a good balance from the left and right.
The same applies to the case where the base end portion of the right retaining member is fixed to the vehicle side and the left retaining member is wound up by the reel.

According to the invention of claim 2, in the sliding pulley, the first pulley portion on which one of the left and right retaining members is hung and the second pulley portion on which one of the left and right retaining members is hung are coaxial. It is characterized by being connected in a state of being overlapped with each other.
For this reason, the left and right retaining members hung on the sliding pulley do not interfere with each other.

According to a third aspect of the present invention, there is provided a fixing mechanism for fixing the sliding pulley to the bracket by an electromagnet so as not to slide.
For this reason, even if the wheelchair fixing device fixes the wheelchair, for example, even when the vehicle curves sharply, the sliding pulley moves even if the tension of either the left or right retaining member increases due to centrifugal force. There is no such thing.

  According to the present invention, the tensions of the left and right retaining members are equal, and the wheelchair can be fixed to the vehicle in a balanced manner from the left and right.

It is a top view of the vehicle interior of a vehicle provided with the wheelchair fixing device concerning Embodiment 1 of the present invention. It is a model side view showing the function of the wheelchair fixing device concerning Embodiment 1 of the present invention. It is a top view of the wheelchair fixing device concerning Embodiment 1 of the present invention. It is the IVA arrow enlarged view (A figure) of FIG. 3, and the BB arrow longitudinal cross-sectional view (B figure) of A figure. It is a model top view showing operation | movement of the tension balance mechanism of the said wheelchair fixing device. It is a model top view showing operation | movement of the tension balance mechanism of the said wheelchair fixing device. It is a model top view showing operation | movement of the tension balance mechanism of the said wheelchair fixing device. It is a model top view showing operation | movement of the tension balance mechanism of the said wheelchair fixing device.

[Embodiment 1]
Hereinafter, based on FIGS. 1-8, the wheelchair fixing device which concerns on Embodiment 1 of this invention is demonstrated. The wheelchair fixing device according to the present embodiment is a device that fixes the wheelchair to the floor in the vehicle cabin.
Note that front and rear, left and right, and top and bottom in the figure correspond to front and rear, left and right, and top and bottom of the vehicle, and front and rear, left and right, and top and bottom in the specification also correspond to front and rear, left and right, and top and bottom of the vehicle.

<About the outline of the wheelchair fixing device 10>
The wheelchair fixing device 10 is a device for fixing the wheelchair K to the floor position in the vehicle interior of the vehicle W. As shown in FIGS. 1 and 2, a wheelchair lifter (not shown) stored in the floor portion of the vehicle interior. It is stored in the platform 4. That is, the platform 4 is formed with a recess 4h for accommodating the wheelchair fixing device 10 at a predetermined position, and the opening of the recess 4h is blocked by the platform surface 4u.
It is also possible to form a recess (not shown) for housing the wheelchair fixing device 10 at a predetermined position on the floor in the vehicle interior and close the opening of the recess with a floor plate.
As shown in FIG. 3, the wheelchair fixing device 10 includes three sets of reels 30r, 30y, and 30z configured to wind up or feed out the front and rear, left and right wires 12f, 12r, 12y, and 12z, and the reels 30r, 30r, 30y and 30z are rotated in the winding direction, and the gear mechanism 40 and the drive unit 50 that can be rotationally locked, the tension balance mechanism 60 that balances the tension of the front left and right wires 12f and 12r, and a long length in the longitudinal direction of the vehicle. And a rectangular base 11 that supports the reels 30r, 30y, and 30z, the gear mechanism 40, the drive unit 50, the tension balance mechanism 60, and the like. And the base 11 is being fixed to the platform 4 of a wheelchair lifter, or the floor part of a vehicle interior.
That is, the base 11 corresponds to the vehicle side of the present invention.

The left front wire 12f (hereinafter referred to as the left front wire 12f) is a wire that restricts the rearward movement of the left front portion of the wheelchair K, and a hook 13f (see FIG. 2) that is hung on the left front portion of the wheelchair K is fixed to the tip thereof. Has been. As shown in FIG. 3, the left front wire 12 f has a base end portion fixed to the left end of the base 11 by a fixing member 21. Then, after the middle portion of the left front wire 12f is hung on a sliding pulley 62 (described later) of the tension balance mechanism 60, a left front water smoothing wheel 22f, and a left front vertical pulley 23f, as shown in FIG. 2, the platform surface 4u It is drawn to the upper side of the platform surface 4u through the square opening 4k.
The right front wire 12r (hereinafter, referred to as the right front wire 12r) is a wire that restricts the rearward movement of the right front portion of the wheelchair K, and a hook 13r (see FIG. 4B) that is hung on the right front portion of the wheelchair K at the tip thereof. ) Is fixed. As shown in FIG. 3, the right front wire 12r is pulled out from the right front reel 30r, and the middle portion is hung on the intermediate water smoother 24, the sliding pulley 62 of the tension balance mechanism 60, the right front water smoother 22r, and the right front vertical pulley 23r. After being pushed, it is pulled out to the upper side of the platform surface 4u through the square opening 4k of the platform surface 4u.

The left rear wire 12y (hereinafter referred to as the left rear wire 12y) is a wire that restricts the forward movement of the left rear portion of the wheelchair K, and a hook 13y that is hung on the left rear portion of the wheelchair K at the tip thereof (see FIG. 2). Is fixed. The left rear wire 12y is pulled out from the left rear reel 30y, hung on the left rear water smooth pulley 22y and the left rear vertical pulley 23y, and then pulled out to the upper side of the platform surface 4u through the square opening 4k of the platform surface 4u. ing.
The right rear wire 12z (hereinafter, referred to as the right rear wire 12z) is a wire that regulates the forward movement of the right rear portion of the wheelchair K, and a hook (not shown) that is hung on the right rear portion of the wheelchair K is fixed to the tip thereof. Has been. The right rear wire 12z is pulled out from the right rear reel 30z, hung on the right rear water smooth pulley 22z and the right rear vertical pulley 23z, and then pulled out to the upper side of the platform surface 4u through the square opening 4k of the platform surface 4u. It is.
That is, the wires 12f, 12r, 12y, and 12z correspond to the retaining member of the present invention.

<About the tension balance mechanism 60>
The tension balance mechanism 60 is a mechanism that balances the tension between the left front wire 12f and the right front wire 12r, and includes a slide pulley 62, a bracket 65 that supports the slide pulley 62 so as to be horizontally slidable on the base 11, and a slide. A fixing mechanism (not shown) that prohibits horizontal sliding of the type pulley 62 is provided.
As shown in the longitudinal sectional view of FIG. 4B, the sliding pulley 62 includes an upper pulley portion 62u and a lower pulley portion 62d that are coaxially connected and have the same outer diameter. A middle portion of the left front wire 12f is hung from the right side to the upper pulley portion 62u of the sliding pulley 62, and a middle portion of the right front wire 12r is hung from the left side to the lower pulley portion 62d.
That is, the upper pulley portion 62u corresponds to the first pulley portion of the present invention, and the lower pulley portion 62d corresponds to the second pulley portion of the present invention.
The bracket 65 is a pedestal that horizontally supports the sliding pulley 62 so that the sliding pulley 62 can rotate about the axis so that the sliding pulley 62 can slide leftward or rightward on the base 11. The bracket 65 is formed in a convex shape that is long on the left and right and has a substantially inverted U-shaped vertical cross section, and support plate portions 65x provided at four locations around the bracket 65 are fixed to the base 11 with bolts. ing.
The sliding pulley 62 is housed in a convex portion of the bracket 65, and a slit-like long hole 65h through which the upper end portion of the central shaft 62j of the sliding pulley 62 is passed through the upper surface of the bracket 65 in the left-right direction. It is formed to extend. In addition, a slit-like long hole (not shown) through which the lower end portion of the central shaft 62j of the sliding pulley 62 passes is formed in the base 11 at a position facing the slit-like long hole 65h of the bracket 65.

Therefore, when the tension of the right front wire 12r becomes larger than the tension of the left front wire 12f, the sliding pulley 62 is pulled by the right front wire 12r and slides to the right along the slit-like long hole 65h of the bracket 65. become. On the contrary, when the tension of the left front wire 12f becomes larger than the tension of the right front wire 12r, the sliding pulley 62 slides to the left along the slit-like long hole 65h of the bracket 65. When the tension of the right front wire 12r becomes equal to the tension of the left front wire 12f, the sliding pulley 62 is held at that position.
The fixing mechanism is a mechanism for fixing the sliding pulley 62 to the bracket 65 when the tension of the right front wire 12r becomes equal to the tension of the left front wire 12f. The fixing mechanism includes a disk 62e (see FIG. 4A) attached to the upper end of the center shaft 62j of the sliding pulley 62 and disposed outside the slit-like long hole 65h, and the disk 62e. For example, it is composed of an electromagnet (not shown) that is attracted to the upper surface of the bracket 65.

<Reel 30r, 30y, 30z>
The right front reel 30r, the left rear reel 30y, and the right rear reel 30z are provided so as to be coaxial with the reel main body 32 and a disc-shaped reel main body 32 configured to wind or feed out the respective wires 12r, 12y, and 12z. The reel main body 32 and the reel gear 34 are integrated in the rotation direction.
The right front reel 30r is arranged at the front center portion on the base 11 in a state parallel to the base 11, and is configured to wind the right front wire 12r by rotating counterclockwise. The right rear reel 30z is arranged on the rear side of the right front reel 30r in a state parallel to the base 11, and is configured to wind the right rear wire 12z by rotating to the right. The left rear reel 30y is also arranged on the rear side of the right rear reel 30z in a state parallel to the base 11, and is configured to wind the left rear wire 12y by rotating left.
The lower ends of the rotation center shafts 30j of the right front reel 30r, the left rear reel 30y, and the right rear reel 30z are fitted into bearing holes (not shown) formed in the base 11, and the upper ends of the respective rotation center shafts 30j are the bases. 11 is fitted in a bearing hole (not shown) of a gear bracket 15 (see a two-dot chain line) provided in parallel with the gear 11. Here, on the periphery of the gear bracket 15, leg-shaped support portions 15 x are provided at a plurality of locations in the circumferential direction, and the support portions 15 x are bolted to the base 11.

<About the gear mechanism 40 and the drive part 50>
As shown in FIG. 3, the drive unit 50 includes a motor 52 and a speed reduction mechanism 54 that amplifies the rotational force of the motor 52.
The drive unit 50 is fixed on the base 11 so that the output shaft 56 is vertically oriented, and an output gear (not shown) attached to the output shaft 56 meshes with the input gear 40 w of the gear mechanism 40. Yes.
The gear mechanism 40 is a mechanism for transmitting the rotational force of the output shaft 56 of the drive unit 50 to the right front reel 30r, the left rear reel 30y, and the right rear reel 30z. The above-described input gear 40w, first gear 41, first gear The second gear 42 and the third gear 43 are included. The input gear 40w, the first gear 41, the second gear 42, and the third gear 43 are held so as to be rotatable while being held horizontally between the base 11 and the gear bracket 15. The first gear 41, the second gear 42, and the third gear 43 are provided with a clutch mechanism (not shown) for transmitting or releasing the rotational force.

As shown in FIG. 3, the input gear 40w of the gear mechanism 40 meshes with the first gear 41, and the first gear 41 meshes with the reel gear 34 and the second gear 42 of the right front reel 30r. Yes. The second gear 42 meshes with the reel gear 34 and the third gear 43 of the right rear reel 30z. The third gear 43 meshes with the reel gear 34 of the left rear reel 30y.
When the drive unit 50 rotates the input gear 40w of the gear mechanism 40 to the left by the above configuration, the first gear 41 rotates clockwise, the second gear 42 rotates counterclockwise, and the third gear, as indicated by the arrows in FIG. 43 rotates to the right. As a result, the reel gear 34 (reel body 32) of the right front reel 30r, the left rear reel 30y, and the right rear reel 30z meshed with the first to third gears 41, 42, and 43 is connected to the wires 12r, 12y, and 12z. Rotates in the winding direction.

  Here, the first to third gears 41, 42 and 43 are gears having the same number of teeth, and the reel gear 34 of the right front reel 30r, the left rear reel 30y and the right rear reel 30z is also a gear having the same number of teeth. By the operation of the drive unit 50, the right front reel 30r, the left rear reel 30y, and the right rear reel 30z rotate in the winding direction at an equal speed. Then, the right front wire 12r, the right rear wire 12z, and the left rear wire 12y are wound up to the limit positions, and the motor 52 stops in a state where the rotational torque applied to the motor 52 of the drive unit 50 reaches a predetermined value, and the right front reel 30r. The rotation of the left rear reel 30y and the right rear reel 30z is locked. Further, the clutch mechanism of the first to third gears 41, 42, 43 operates in the direction and the position where the transmission of the rotational force is released, so that the right front reel 30r, the left rear reel 30y, and the right rear reel 30z rotate. The lock is released and the gear mechanism 40 is in a free state so that the left front wire 12f, the right front wire 12r, the right rear wire 12z, and the left rear wire 12y can be pulled out.

<Operation of wheelchair fixing device 10>
Next, the operation of the wheelchair fixing device 10 will be described with reference to FIGS.
First, the wheelchair K is placed at a fixed position on the platform surface 4u, and as shown in FIG. 6, the left front wire 12f is pulled upward by holding the hook 13f. When the left front wire 12f is pulled out, the sliding pulley 62 of the tension balance mechanism 60 is pulled leftward by the tension of the left front wire 12f, and the sliding pulley 62 moves from the position shown in FIG. Move to the left along 65h. As a result, the right front wire 12r is pulled from the right front reel 30r by the amount of movement of the sliding pulley 62.
In this state, the hook 13f of the left front wire 12f is hung on the left front portion of the wheelchair K (see FIG. 2).
Next, as shown in FIG. 7, holding the hook 13r, the right front wire 12r is pulled out from the right front reel 30r via the right front vertical pulley 23r, the right front water smoother 22r, and the sliding pulley 62, and the hook 13r is pulled out of the wheelchair K. Hang on the right front.
Similarly, the left rear wire 12y and the right rear wire 12z are pulled out from the left rear reel 30y and the right rear wire 12z, and the respective hooks 13y are hung on the left rear portion and the right rear portion of the wheelchair K.

  Next, a winding switch (not shown) provided on the vehicle W is operated. Thereby, the drive unit 50 operates, and as shown in FIG. 8, the drive unit 50 rotates the input gear 40w, the first gear 41, the second gear 42, and the third gear 43 of the gear mechanism 40, The right front reel 30r, the left rear reel 30y, and the right rear reel 30z rotate in the winding direction. Here, since the slide pulley 62 of the tension balance mechanism 60 is configured to be slidable in the left-right direction, as shown in FIG. 8, when the right front wire 12r is wound up by the right front reel 30r, the slide pulley is used. 62 is held at a position where the tension of the right front wire 12r is equal to the tension of the left front wire 12f. Then, the right front wire 12r, the left rear wire 12y, and the right rear wire 12z are wound up to the limit positions, and the motor 52 stops in a state where the rotational torque applied to the motor 52 of the drive unit 50 reaches a predetermined value, and the right front reel 30r. The rotation of the left rear reel 30y and the right rear reel 30z is locked. Further, the fixing mechanism of the tension balance mechanism 60 operates to hold the slide pulley 62 in that position. In this state, the wheelchair K is restrained from the front, rear, left and right by the front, rear, left and right wires 12f, 12r, 12y, 12z, and the fixing of the wheelchair K is completed.

In addition, when releasing the fixation of the wheelchair K, the rotation lock of the wheelchair fixing device 10 is released, and the respective hooks 13f, 13r, 13y, 13z can be removed from the wheelchair K.
When the hooks 13f, 13r, 13y, and 13z are removed from the wheelchair K, the right front wire 12r, the left rear wire 12y, and the right rear wire 12z are respectively transferred to the right front reel 30r, the left rear reel 30y, and the right rear reel 30z. It is wound by spring force. Thereby, as shown in FIG. 5, the sliding pulley 62 of the tension balance mechanism 60 slides to the right by the tension of the right front wire 12r, and the left front wire 12f is drawn.

<Advantages of the wheelchair fixing device 10 according to this embodiment>
According to the wheelchair fixing device 10 according to the present embodiment, when the hook 13f of the left front wire 12f and the hook 13r of the right front wire 12r are hung on the wheelchair K and the right front reel 30r is rotated in the winding direction, the right front wire 12r is drawn. The sliding pulley 62 is pulled rightward by the tension at the moment, and the left front wire 12 f is pulled by the sliding pulley 62. That is, when the right front reel 30r rotates in the winding direction, the right front wire 12r is pulled, and the sliding pulley 62 is pulled right by the tension of the right front wire 12r, and the left front wire 12f is pulled. Then, by stopping after the right front reel 30r rotates by a predetermined angle, the sliding pulley 62 is held at a position where the tensions of the left and right wires 12f and 12r become equal, and the wheelchair K is fixed to the vehicle W.
That is, since the tension of the left and right wires 12f and 12r becomes equal in a state where the wheelchair K is fixed to the vehicle W, the wheelchair K can be fixed to the vehicle W from the left and right with a good balance.

The sliding pulley 62 is configured in a state where the upper pulley portion 62u on which the left front wire 12f is hung and the lower pulley portion 62d on which the right front wire 12r is hung are coaxially stacked. The left and right wires 12f and 12r hung on do not interfere with each other.
Further, since the tension balance mechanism 60 is provided with a fixing mechanism for fixing the sliding pulley 62 to the bracket 65, for example, when the wheelchair fixing device 10 fixes the wheelchair K, the vehicle W is sharply curved. Even in this case, the sliding pulley 62 does not move regardless of which of the left and right wires 12f and 12r is increased by centrifugal force.

<Example of change>
Here, the present invention is not limited to the above-described embodiment, and can be modified without departing from the gist of the present invention. For example, in this embodiment, the example which provides the tension balance mechanism 60 which balances the tension | tensile_strength of the left front wire 12f and the right front wire 12r in the front part of the wheelchair fixing device 10 was shown. However, it is also possible to provide the tension balance mechanism 60 in both the front part and the rear part of the wheelchair fixing device 10.
In the present embodiment, the base end portion of the left front wire 12f is fixed to the base 11, and the right front wire 12r is wound around the right front reel 30r. However, the base end portion of the right front wire 12r is fixed to the base 11. However, it is also possible to wind the left front wire 12f with a reel.
In this embodiment, the wire is exemplified as the retaining member. However, a belt or the like can be used instead of the wire.

11 ... Base (vehicle side)
12r ... Right front wire (holding member)
12z ... Right rear wire (holding member)
12f ... Front left wire (holding member)
12y ... Left rear wire (holding member)
13f ... hook 13r ... hook 13y ... hook 21 ... fixing member 30r ... right front reel 30z ... right rear reel 30y ... left rear reel 62 ... Sliding pulley 62u ... Upper pulley section (first pulley section)
62d ··· Lower pulley part (second pulley part)

Claims (3)

A string-like left and right retaining member provided with a hook, and a reel provided on a base fixed to a vehicle floor portion and configured to wind up the retaining member; A wheelchair fixing device that hangs each hook on the left and right sides of the wheelchair and rotates the reel in the winding direction of the retaining member in this state to fix the wheelchair to the vehicle floor ,
A sliding pulley on which a middle portion of the left retaining member is hung from the right side and a middle portion of the right retaining member is hung from the left side, and provided on the base, the sliding pulley is moved leftward or rightward A tension balance mechanism having a bracket that is horizontally supported so that it can slide;
A reel configured to wind up either one of the left and right retaining members;
A fixing member that fixes the other base end of the left and right holding members to the base ;
When the tension of the right retaining member is larger than the tension of the left retaining member, the sliding pulley is pulled by the right retaining member and slides to the right, and the tension of the left retaining member is When the tension of the retaining member is larger than the tension, the sliding pulley is pulled by the left retaining member and slides to the left, and the sliding pulley is held at a position where the tensions of the left and right retaining members are equal. A wheelchair fixing device characterized by that . The wheelchair fixing device according to claim 1,
The sliding pulley is connected in a state in which a first pulley portion on which one of the left and right retaining members is hung and a second pulley portion on which one of the left and right retaining members is hung are coaxially stacked. Wheelchair fixing device characterized by being made. A wheelchair fixing device according to claim 1 or 2,
A wheelchair fixing device comprising: a fixing mechanism for fixing the sliding pulley to the bracket by an electromagnet so as not to slide.

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