JP2008230270A - Slope opening and closing assisting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slope opening and closing assisting device capable of saving a space while restraining costs required for a spring. <P>SOLUTION: In this slope opening and closing assisting device 1, an accommodation condition, in which a slope body 22 stands on a floor 13, and a deploying condition 32, in which the body is inclined and extends to the outside O of a compartment, can be formed. A bracket 42 stands on the floor 13, so as to rotatably support a rotation bar 44 in the bracket 42. A standing condition 51, in which the rotation bar 44 stands on the floor 13, and an inclined condition 52, in which the bar is inclined toward an inside of the compartment I, can be formed. Under the standing condition 51, the bar contacts a stopper 53 of the bracket 42, so as to avoid rotation toward the outside O of the compartment. A coil spring 61 is provided between a tip of the rotation bar 44 and the slope body 22, so as to assist a rotating operation of the slope body 22. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a slope opening / closing assisting device that assists a slope opening / closing operation.

  Conventionally, as shown in FIG. 2, a vehicle 803 in which a slope 802 is provided in a rear chamber 801 is known.

  The slope 802 has a base end portion rotatably supported by the vehicle body 811, a retracted state 813 that stands on the floor surface 812 of the rear chamber 801, and a deployed state 814 that tilts and extends outside the vehicle compartment O. It is comprised so that can be formed.

  Thereby, in this unfolded state 814, an inclined surface is formed between the floor surface 812 and the road surface, so that the wheelchair can be easily moved in and out of the rear chamber 801.

  The slope 802 is made of metal or the like and has a weight. Therefore, a slope opening / closing auxiliary device 821 is used to assist the opening / closing operation of the slope 802.

  As the slope opening / closing assisting device 821, there is also known a device that supports the slope 802 on the vehicle body 811 with a gas spring and assists the raising of the slope 802, but a coil spring 831 is provided between the vehicle body 811 and the slope 802. The provided apparatus is general and advantageous in terms of cost.

  However, in such a slope opening / closing assisting device 821, in order to obtain a high assisting force, a coil spring 831 having a large wire diameter or coil diameter has to be used, which is a high cost factor.

  Further, the fixing point 841 of the coil spring 831 to the vehicle body 811 has to be set at a high position, and there is a problem that the occupied space becomes wide.

  The present invention has been made in view of such a conventional problem, and an object of the present invention is to provide a slope opening / closing auxiliary device capable of saving space while suppressing the cost required for a spring. .

  In order to solve the above-mentioned problems, the slope opening / closing auxiliary device according to the present invention rotates between the stowed state in which the slope body supported by the vehicle body is raised and the deployed state in which the slope body is tilted so as to extend out of the passenger compartment In the slope opening / closing auxiliary device that assists the rotation operation of the slope body when operating, the vehicle is rotatably supported by the vehicle body to form an upright standing state and a tilted state tilted toward the vehicle interior side. A rotation bar, a stopper that prevents the rotation bar from rotating in the vehicle exterior direction in the standing state, and a coil spring provided between a tip end portion of the rotation bar and the slope body. I have.

  That is, when the slope body in the stowed stowed state is deployed, the slope body is tilted to perform the deployment operation.

  At this time, the tip of the rotating bar in the tilted state and the slope main body are connected via a coil spring, and the rotating bar in the tilted state follows the tilting of the slope main body. Stand up.

  And when the standing state where the said rotation bar stood up is formed, the rotation bar will be prevented from rotating in the direction outside the vehicle compartment by the stopper. Then, from this time point, the coil spring provided between the rotating bar and the slope body starts to expand as the slope body tilts.

  As a result, tension is applied to the slope body tilted to a predetermined position by the coil spring, and a spring force that increases as it tilts acts in the pulling direction.

  On the other hand, when storing the slope main body in the unfolded state tilted so as to extend out of the passenger compartment, the slope main body is stood up and stored.

  At this time, the tip of the rotating bar in the standing state and the slope main body are applied with a spring force by a pulled coil spring in the pulling direction, and this spring force assists the standing operation of the slope main body. The

  When the slope body rises to a predetermined position, the coil spring returns to the length before extension. Then, from this time point, the tilting of the rotating bar toward the vehicle interior side is started with the rising of the slope main body, and in the retracted state where the slope main body is raised, the rotating bar is moved toward the vehicle interior side. The tilting operation is tilted toward the end, and the storing operation is completed.

  As described above, in the slope opening / closing assist device of the present invention, the rotation bar that supports the coil spring for opening / closing operation rotates according to the tilted state of the slope body. The spring force of the coil spring can be applied in the vicinity of the increasing deployed state to assist the opening / closing operation of the slope body.

  At this time, in the vicinity of the unfolded state, the operator operates the slope main body while the operator bends and bends, increasing the burden on the operator. Since the opening / closing operation can be assisted by the spring force of the coil spring in the vicinity of such an unfolded state, the wire diameter and The opening / closing operation can be sufficiently assisted at an appropriate position without using a coil spring having a large coil diameter.

  Further, since the rotating bar supporting the coil spring tilts in the retracted state, the length of the coil spring to be used is longer than that in the conventional case where the coil spring must always be fixed at a high position. And the space occupied by the coil spring in the retracted state can be reduced.

  Therefore, space saving can be achieved while suppressing the cost required for the coil spring.

  Hereinafter, one embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a slope opening / closing assisting device 1 according to the present embodiment, and an example in which the slope opening / closing assisting device 1 is installed in a welfare vehicle 2 is shown.

  That is, the welfare vehicle 2 is provided with a rear chamber 11 in which a wheelchair can be boarded. The rear chamber 11 is provided with a back door opening 12 that is opened and closed by a back door (not shown) at the rear of the vehicle. It has been. The floor 13 of the rear chamber 11 is formed with an inclined portion 14 that extends obliquely downward as it goes from the vehicle interior I to the vehicle exterior O, and the front end of the inclined surface 14 is connected to the general surface 15. ing.

  A base end portion of a slope main body 22 of the slope 21 is rotatably supported by the inclined portion 14 via a hinge 23, and the slope main body 22 is fixed to a vehicle body 24 of the welfare vehicle 2. . This slope main body 22 is comprised, for example by the base end side slope and front end side slope connected so that mountain folding is possible (illustration omitted), and it is comprised so that it can fold and fold.

  The slope main body 22 is configured to be able to form a retracted state 31 standing on the inclined portion 14 of the floor 13, and by forming the retracted state 31, the slope main body 22 is placed in the rear chamber 11. It is configured so that it can be stored. Further, the slope main body 22 can be rotated about a support point by the hinge 23 and tilted to form a deployed state 32 extending to the vehicle exterior O through the back door opening 12. In this unfolded state 32, an inclined surface is formed between the floor 13 and the road surface, and the wheelchair can be assisted in getting on and off the rear chamber 11.

  On the general surface 15 on the side of the inclined portion 14 of the floor 13, a support column portion 41 that supports the slope main body 22 in the retracted state 31 is erected. A bracket 42 having a U-shaped horizontal section that is open toward the vehicle interior I side is integrally provided on the side portion of the support column 41 in an upright state. A rotation bar 44 is rotatably supported via a rotation shaft 43 provided on the inner surface of the motor.

  In the present embodiment, the case where the bracket 42 is integrally provided on the support column 41 will be described as an example. However, the present invention is not limited to this. For example, the bracket 42 stands on the floor 13. May be installed.

  The pivot bar 44 is formed of a long plate material, and is in a standing state 51 standing substantially perpendicular to the general surface 15 of the floor 13 and the vehicle interior I side with the pivot shaft 43 as a center. And a tilted state 52 that is tilted toward the side. In the tilted state 52, it is inclined obliquely with respect to the horizontal line, and extends obliquely upward as it goes to the tip. Further, the rotating bar 44 is configured to abut on a rod-shaped stopper 53 that crosses the bracket 42 in the standing state 51, and in the standing state 51, the rotating bar 44 moves in the O direction outside the vehicle compartment. Is prevented by the stopper 53.

  The proximal end of the coil spring 61 is fixed to the distal end portion of the rotation bar 44, and the distal end of the coil spring 61 is located away from the rotation center by the hinge 23 on the side surface of the slope body 22. It is fixed to.

  As a result, in the deployed state 32, the coil spring 61 is stretched so that the spring force by the coil spring 61 acts in the direction of pulling up the slope body 22, and the coil spring 61 The slope opening / closing assisting device 1 is configured to assist the rotation operation of the slope body 22.

  In addition, a cylindrical cover 71 is fitted on the coil spring 61, and the cover 71 is set to a length that covers the contracted coil spring 61 in the retracted state 31.

  In the present embodiment having the above configuration, when the slope main body 22 in the stowed stowed state 31 is expanded, the slope main body 22 is tilted toward the vehicle exterior O side to perform the expansion operation.

  At this time, the tip of the rotation bar 44 in the tilted state 52 and the slope main body 22 are connected via the coil spring 61, and follow the tilt of the slope main body 22 in the tilted state 52. The rotating bar 44 is upright.

  When the standing state 51 in which the turning bar 44 stands is formed, the turning bar 44 comes into contact with the stopper 53 provided on the bracket 42 and is prevented from turning in the O direction outside the vehicle compartment. The Then, from this time point, the coil spring 61 provided between the rotating bar 44 and the slope body 22 starts to be extended as the slope body 22 tilts.

  As a result, the slope body 22 tilted to a predetermined position is applied with a tension by the coil spring 61, and a spring force that increases as the tilt is applied can act in the pulling direction.

  At this time, the rotating bar 44 is erected, and the coil spring 61 is fixed to the tip thereof. For this reason, compared with the case where the said rotation lever 44 remains tilted, a lever ratio improves and the spring force by the said coil spring 61 can be made to act efficiently.

  On the other hand, when storing the slope main body 22 in the unfolded state 32 tilted so as to extend out of the passenger compartment O, the slope main body 22 is raised and stored.

  At this time, the tip of the rotating bar 44 in the standing state 51 and the slope main body 22 are applied with a spring force by the pulled coil spring 61 in the pulling direction. The standing operation is assisted.

  When the slope main body 22 stands up to a predetermined position, the coil spring 61 returns to the free length before extension. Then, from this time point, the tilting of the rotating bar 44 toward the vehicle interior I side is started as the slope main body 22 stands, and in the retracted state 31 where the slope main body 22 stands up, the rotating bar 44 44 becomes a tilted state 52 tilted toward the vehicle interior I side, and the storing operation is completed.

  As described above, the rotating bar 44 supporting the opening / closing operation assisting coil spring 61 rotates according to the tilted state of the slope body 22, so that the weight of the slope body 22 increases in the vicinity of the deployed state 32. The spring force of the coil spring 61 can be applied to the maximum to assist the opening / closing operation of the slope body 22.

  At this time, in the vicinity of the unfolded state 32, the operator operates the slope body 22 in a state where the operator bends and bends, increasing the burden on the operator. Since the opening / closing operation can be assisted by the spring force of the coil spring 61 in the vicinity of the unfolded state 32, the operator can rotate the slope body 22 in an easy posture. In addition, the opening / closing operation is appropriately performed without using the coil spring 61 having a large wire diameter or coil diameter as compared with the conventional case in which the spring force of the coil spring 61 is applied in the entire region in which the slope body 22 is rotated. It is possible to sufficiently assist at a proper position.

  Further, the rotating bar 44 supporting the coil spring 61 tilts in the retracted state 31, so that the coil to be used is used in comparison with the conventional coil spring 61 that must always be fixed at a high position. The length of the spring 61 can be shortened and the space occupied by the coil spring 61 in the retracted state 31 can be narrowed.

  Therefore, space saving can be achieved while suppressing the cost required for the coil spring 61.

It is an enlarged view of the principal part which shows one embodiment of this invention. It is explanatory drawing which shows the conventional slope opening / closing auxiliary | assistance apparatus.

Explanation of symbols

1 Slope Open / Close Auxiliary Device 22 Slope Body 24 Car Body 31 Stored State 32 Unfolded State 44 Rotating Bar 51 Standing State 52 Tilt State 53 Stopper 61 Coil Spring

Claims (1)

A slope opening / closing assist device that assists in turning the slope body when the slope body supported by the vehicle body is turned between a stowed retracted state and a deployed state tilted so as to extend out of the passenger compartment. In
A rotation bar that is rotatably supported by the vehicle body and forms an upright standing state and a tilted state tilted toward the vehicle interior;
A stopper for preventing the rotation of the rotating bar in the upright direction from the vehicle interior;
A coil spring provided between the tip of the rotating bar and the slope body;
A slope opening / closing auxiliary device characterized by comprising:

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