JP2009173097A - Slope opening and closing auxiliary device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slope opening and closing auxiliary device enabling effective use of a space while increasing assisting force. <P>SOLUTION: In this slope opening and closing auxiliary device, an assisting force providing structure 51 for giving energizing force of a coil spring 43 to a wire cable 45 is formed by connecting the wire cable 45 with the coil spring 43, the coil spring 43 of the assisting force providing structure 51 is provided in a vehicle body 21, and the wire cable 45 of the assisting force providing structure 51 is fixed on a slope 23 to constitute a section between the coil spring 43 and the slope 23 by the wire cable 45. This slope opening and closing auxiliary device is provided with a conversion means for converting the direction of action of the energizing force applied on the wire cable 45 from the coil spring 43 into the direction 81 for pulling up slope to pull up the slope 23 by stretching the wire cable 45 around a pulley 71 provided at a high position and extending it. <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. 9, a vehicle in which a slope 1002 is provided in a rear chamber 1001 is known.

  The slope 1002 has a base end portion rotatably supported by the vehicle body, a retracted state 1012 that stands up with respect to the floor surface 1011 of the rear chamber 1001, and a deployed state that tilts and extends outside the vehicle compartment O. 1013 can be formed.

  As a result, in this unfolded state 1013, an inclined surface is formed between the floor surface 1011 and the road surface, so that the wheelchair can be easily moved in and out of the rear chamber 1001.

  Since the slope 1002 is heavy, it is difficult to open and close without the auxiliary device. Therefore, a slope opening / closing auxiliary device 1021 is used to assist the opening / closing operation of the slope 1002.

  The slope opening / closing auxiliary device 1021 is configured by providing a bracket 1031 on the floor surface 1011 and providing a tension spring 1032 between the bracket 1031 and the slope 1002.

  Thus, the pulling spring 1032 assists pulling up the panel of the slope 1002 when the slope is closed, and the slope 1002 does not drop suddenly when the slope is deployed.

  However, in such a slope opening / closing auxiliary device 1021, the tension spring 1032 had to be constituted by a coil spring having a large wire diameter or coil diameter in order to obtain a high auxiliary force.

  Further, in order to ensure the lever ratio, a large bracket 1031 is required, and the protruding amount of the bracket 1031 in the vehicle interior becomes large.

  As a result, the arrangement space is increased, which tends to get in the way.

  On the other hand, in order to reduce the vehicle cost by eliminating the mechanism for lowering the vehicle height, it is necessary to increase the overall length of the panel of the slope 1002, and the weight of the slope 1002 increases. In this case, a large auxiliary force is required.

  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 that enables effective use of space while improving auxiliary force.

  In order to solve the above-mentioned problem, in the slope opening / closing auxiliary device according to claim 1 of the present invention, the slope supported by the vehicle body is stood between the stowed stowed state and the deployed state tilted so as to extend out of the passenger compartment. In the slope opening / closing assisting device that assists the rotation operation of the slope, the auxiliary force applying structure that applies the urging force of the spring to the cable by engaging the cable with the spring is formed, The spring of the auxiliary force applying structure is provided on one of the vehicle body or the slope, and the cable of the auxiliary force applying structure is fixed to the other of the vehicle body or the slope, and the cable between the spring and the slope is connected with the cable. On the other hand, a conversion hand that converts the direction of action of the urging force applied from the spring to the cable into the direction of raising the slope. The provided.

  That is, the urging force applied to the cable from the spring of the auxiliary force applying structure is converted into the direction in which the slope is lifted. Thereby, the urging force applied to the cable from the spring is used as an auxiliary force for pulling up the slope.

  At this time, the urging force of the spring is transmitted to the slope via a cable, and the cable is disposed between the spring and the slope.

  For this reason, the said spring can be installed in the range which can route the said cable, and can give freedom degree to arrangement | positioning of the said spring.

  In the slope opening / closing assist device according to claim 2, the spring of the auxiliary force applying structure is provided on the vehicle body, the cable of the auxiliary force applying structure is fixed to the slope, and from the vehicle body side to the slope side. The conversion means is configured by setting the extension position of the cable to a position higher than the fixed point of the cable to the slope in the unfolded state.

  That is, by setting the extension position of the cable from the vehicle body side to the slope side to be higher than the fixing point of the cable to the slope in the deployed state, the biasing force applied to the cable from the spring Can be used as the lifting force of the slope.

  Thereby, the said conversion means which converts the action direction of the said urging | biasing force provided to the said cable into the pulling-up direction of the said slope is comprised.

  Furthermore, in the slope auxiliary device according to claim 3, an equalizer is provided in the spring, a cable insertion portion through which the cable is movably inserted is provided in the equalizer, and the slope in the retracted state is shifted to the deployed state. At this time, a stopper that comes into contact with the equalizer to start extension of the spring is provided at the tip of the cable inserted through the cable insertion portion.

  That is, in order to obtain a high lever ratio, if the extension position of the cable extending from the slope side to the vehicle body side is set at a position away from the rotation center of the slope, the required cable length becomes long. Accordingly, when the spring length is increased, a large spring is required in consideration of durability, and the space for arranging the spring becomes large.

  Therefore, when the slope is in the retracted state, the distal end portion of the cable is inserted through the cable insertion portion of the equalizer and is accommodated closer to the proximal end side than the equalizer.

  On the other hand, when the slope in the retracted state is tilted to shift to the unfolded state, in the first stage, the cable accommodated on the proximal side from the equalizer extends through the cable insertion portion. . Then, in the second stage, the extension of the spring is started from the time when the retaining member provided at the tip of the cable comes into contact with the equalizer, allowing further inclination of the slope, and attaching the spring. The power begins to act as an auxiliary force.

  In addition, in the slope auxiliary device according to claim 4, the spring-side portion of the cable is movably surrounded by an outer cable, and the extended portion of the cable extending from the outer cable is used as the vehicle body. And the slope.

  That is, the portion of the cable on the spring side is covered with an outer cable, and the portion of the cable constituting the spring side covered with the outer cable can be bent.

  Moreover, in the slope auxiliary | assistance apparatus of Claim 5, the handrail was comprised with the cylindrical holder which accommodated the said spring.

  Thereby, since the handrail can be comprised by the holder which accommodated the said spring, the convenience improves.

  As described above, in the slope opening / closing auxiliary device according to claim 1 of the present invention, by converting the direction of action of the urging force applied to the cable from the spring of the auxiliary force applying structure into the direction of raising the slope. The urging force applied to the cable from the spring can be used as an auxiliary force for pulling up the slope.

  At this time, the urging force of the spring is transmitted to the slope via a cable, and the cable is disposed between the spring and the slope.

  For this reason, the setting of the spring between the vehicle body and the slope can be abolished compared to the conventional case where a tension spring has to be provided between the vehicle body and the slope. Further, since the spring can be provided with a degree of freedom, it is possible to dispose the spring in a place that does not get in the way during normal use, and the dead space can be effectively utilized.

  By disposing the spring in the dead space, it becomes possible to use a large spring having a wire diameter, a coil diameter or the like in the dead space, and a high auxiliary force can be easily obtained. Thereby, the burden of the operator who opens and closes a slope can be reduced.

  In addition, the floor surface can be effectively used as compared with the conventional case where the bracket protrudes greatly toward the vehicle interior due to the structure in which a large bracket is provided on the floor surface.

  Therefore, improvement of auxiliary power and effective use of space can be realized at the same time.

  In the slope opening / closing auxiliary device according to claim 2, the extension position of the cable from the vehicle body side to the slope side is set higher than a fixed point of the cable to the slope in the unfolded state, The biasing force applied to the cable by a spring can be used as the lifting force of the slope.

  With such a simple structure, it is possible to configure conversion means for converting the direction in which the urging force applied to the cable is applied to the direction in which the slope is pulled up, and the structure can be simplified.

  Furthermore, in the slope auxiliary device according to claim 3, in the first stage in which the slope in the retracted state is tilted and the transition to the unfolded state is started, the slope is tilted and accommodated on the base end side from the equalizer. A cable extends through the cable insertion portion. Thereby, the inclination of the slope can be allowed.

  Then, in the second stage in which the retainer provided at the tip of the cable comes into contact with the equalizer, the extension of the spring is started. As a result, the slope can be allowed to further tilt according to the extension of the spring, and the urging force of the spring can act as an auxiliary force.

  At this time, the slope is inclined from the first stage, and the operating force increases as the weight of the slope increases.

  However, in this second stage, the urging force of the spring can be used as an assisting force, so that the assist during the operation can be efficiently performed without increasing the size of the spring.

  Therefore, in order to obtain a high lever ratio, even if the extension position of the cable extending from the slope side to the vehicle body side is set at a position away from the rotation center of the slope, and the cable length becomes long The spring force can be applied as an auxiliary force at an appropriate position without increasing the size of the spring.

  Thereby, compared with the case where spring length is lengthened according to cable length, the arrangement space of a spring can be made small.

  In addition, in the slope assisting device according to claim 4, the portion of the cable on the spring side is covered with an outer cable, and the portion of the cable constituting the spring side covered with the outer cable It can be routed by bending it.

  For this reason, while the freedom degree of arrangement | positioning of the said spring can further be raised, the malfunction resulting from interference with others can also be prevented beforehand.

  Further, the extension portion of the outer cable from which the cable extends is set at a position higher than the fixing point of the cable to the slope in the unfolded state, whereby the cable is applied to the cable from the spring. The biasing force can be used as the lifting force of the slope.

  Thereby, without providing another member, it is possible to configure conversion means for converting the direction of action of the urging force applied to the cable into the direction in which the slope is pulled up, and the structure can be further simplified. .

  Moreover, in the slope auxiliary | assistance apparatus of Claim 5, a handrail can be comprised with the holder which accommodated the said spring.

  Thereby, since the said holder can be used effectively, the convenience improves.

  Further, the appearance can be improved and the appearance quality can be improved as compared with the case where the spring or the mechanism portion is exposed.

  (First embodiment)

  Hereinafter, a first 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 the slope opening / closing assisting device 1 is installed in a welfare vehicle 2.

  That is, the welfare vehicle 2 is provided with a rear chamber 11 in the vehicle interior I, and the rear chamber 11 is configured to be able to get in a wheelchair. A back door opening 12 is provided at the rear of the rear chamber 11 and is configured to be opened and closed by a back door (not shown).

  A base end portion of a slope main body 24 constituting a slope 23 is turnable via a hinge 25 at a rear end portion of a slope surface 22a formed on a floor 22 constituting the vehicle body 21 of the welfare vehicle 2. The slope main body 24 is supported by the vehicle body 21 of the welfare vehicle 2.

  The slope main body 24 is composed of, for example, a base-side slope and a tip-side slope that are connected so as to be foldable (not shown), a foldable type that can be folded and stored, or a tip on the base-side slope. There is known a slide type in which a side slope is slidably provided and a tip side slope can be stored on top of a base side slope.

  The slope 23 is configured to be able to form a stowed state 31 standing with respect to the floor 22, and is configured to be able to store the slope 23 in the rear chamber 11 by forming the stowed state 31. ing. Further, the slope 23 can be tilted by being rotated about a support point 32 by the hinge 25 so as to form an unfolded state 33 extending out of the passenger compartment O through the back door opening 12. In this unfolded state 33, an inclined surface is formed between the floor 22 and the road surface, and the wheelchair can be assisted in getting on and off the rear chamber 11.

  Mount brackets 42 are provided on both sides of the rear chamber 11 (only one is shown). Each mount bracket 42 is formed in a plate shape, for example, and is formed in a rectangular shape extending in the vehicle front-rear direction. The base end of the coil spring 43 is fixed to the base end of each mount bracket 42 on the vehicle front side, and the base end of the wire cable 45 is connected to the tip end of each coil spring 43 via a clasp 44. Each is fixed.

  Thus, each mounting bracket 42 is formed with an auxiliary force applying structure 51 that applies the urging force of each coil spring 43 to the corresponding wire cable 45.

  The tip of each wire cable 45 constituting each auxiliary force applying structure 51 is fixed to a corresponding side surface of the slope body 24 constituting the slope 23, and each wire cable 45 to the slope body 24 is fixed. The fixed point 61 is set at an intermediate portion of the side surface of the slope body 24.

  Pulleys 71 are rotatably supported at the front end portions of the mounting brackets 42 on the vehicle rear side, and wire pulleys 45 of the corresponding auxiliary force applying structures 51 are hung on the pulleys 71. Yes. Thus, each wire cable 45 of each auxiliary force applying structure 51 is arranged between the coil spring 43 and the slope 23.

  Each pulley 71 is at a higher position than each fixing point 61 of each wire cable 45 to the slope 23 in the deployed state 33 and each fixing point 61 to the slope 23 in the retracted state 31. The extension position 75 of the wire cable 45 from the vehicle body 21 side to the slope 23 side is set to a position higher than the fixed point 61 of the slope 23 in each of the states 31 and 33. Has been.

  As a result, the pulley 71 constitutes conversion means for converting the direction of action of the urging force applied from the coil spring 43 to the wire cable 45 into the slope pulling direction 81 of the slope 23.

  The coil spring 43 and the wire cable 45 constituting the auxiliary force applying structure 51 are arranged such that the tip of the coil spring 43 is in a state where the slope 23 is in the expanded state 33 and the coil spring 43 is extended in the length direction. Does not interfere with the pulley 71, and the coil spring 43 is contracted in the length direction with the slope 23 in the retracted state 31, the wire cable 45 fixed to the slope 23 is not loosened and the coil spring The length dimension of the coil spring 43 and the length dimension of the wire cable 45 are set so that the coil spring 43 can be pulled in.

  Thereby, the slope 23 is rotated between the retracted state 31 where the slope 23 supported by the vehicle body 21 is erected and the unfolded state 33 where the slope 23 is tilted so as to extend out of the passenger compartment O. At the time of dynamic operation, the biasing force from the coil spring 43 is applied to the slope pulling direction 81 so that the rotation operation of the slope 23 can be assisted.

  In the present embodiment according to the above configuration, the urging force applied from the coil spring 43 of the auxiliary force applying structure 51 to the wire cable 45 is converted into a slope pulling direction 81 in which the acting direction pulls up the slope 23. Is done. For this reason, the urging force applied to the wire cable 45 from the coil spring 43 can be used as an auxiliary force for lifting the slope 23.

  At this time, the urging force of the coil spring 43 is transmitted to the slope 23 via the wire cable 45, and the wire cable 45 is disposed between the coil spring 43 and the slope 23. Yes.

  For this reason, the tension spring is arranged between the vehicle body 21 and the slope 23 as compared with the conventional case in which a tension spring composed of a coil spring 43 must be provided between the vehicle body 21 and the slope 23. Can be abolished. Thereby, in the unfolded state 33, the appearance can be improved as compared with the case where the coil spring 43 is exposed on the slope 23.

  Further, since the wire cable 45 is formed between the coil spring 43 provided in the vehicle interior and the slope 23, the arrangement of the coil spring 43 can be given a degree of freedom. As a result, the coil spring 43 can be disposed in a space that does not get in the way during normal use, so that the dead space can be effectively utilized.

  By disposing the coil spring 43 in the dead space, it becomes possible to use a spring having a large wire diameter or coil diameter in the dead space, and a high auxiliary force can be easily obtained. Thereby, the burden of the operator who opens and closes the slope 23 manually can be reduced.

  Moreover, the floor 22 surface can be used effectively compared to the conventional case where the bracket protrudes greatly toward the vehicle interior due to the structure in which a large bracket is provided on the floor 22 surface.

  Therefore, improvement of auxiliary power and effective use of space can be realized at the same time.

  The extension position 75 of the wire cable 45 from the vehicle body 21 side to the slope 23 side is maintained at a high position by the pulley 71, and the fixing point of the wire cable 45 to the slope 23 in the deployed state 33 is maintained. By setting the position higher than 61, the urging force applied to the wire cable 45 by the coil spring 43 can be used as the lifting force of the slope 23.

With such a simple structure, conversion means for converting the direction of action of the urging force applied to the wire cable 45 into the slope pulling direction 81 can be configured, and the structure can be simplified. it can.

  (Second embodiment)

  Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a diagram showing the slope opening / closing assisting device 101 according to the present embodiment, and the slope opening / closing assisting device 101 is installed in the welfare vehicle 102.

  That is, the welfare vehicle 102 is provided with a rear chamber 111 in the vehicle interior I, and the rear chamber 111 is configured so that a wheelchair can be boarded. A back door opening 112 is provided at the rear of the rear chamber 111, and the back door opening 112 is configured to be opened and closed by a back door (not shown).

  A base end portion of a slope main body 124 constituting the slope 123 is rotatable via a hinge 125 at a rear end portion of the slope surface 122a for entering formed on the floor 122 constituting the vehicle body 121 of the welfare vehicle 102. The slope main body 124 is supported by the vehicle body 121 of the welfare vehicle 102.

  The slope main body 124 is composed of, for example, a base-side slope and a tip-side slope that are connected so as to be foldable (not shown), a foldable type that can be folded and stored, or a tip on the base-side slope. There is known a slide type in which a side slope is slidably provided and a tip side slope can be stored on top of a base side slope.

  The slope 123 is configured to be able to form a storage state 131 that stands up with respect to the floor 212, and is configured to be able to store the slope 123 in the rear chamber 111 by forming the storage state 131. ing. In addition, the slope 123 can be tilted by rotating about the support point 132 by the hinge 125 so as to form an unfolded state 133 that extends out of the passenger compartment O through the back door opening 112. In this unfolded state 133, an inclined surface is formed between the floor 122 and the road surface so that wheelchairs can get in and out of the rear chamber 111.

  Mount brackets 142 are provided on both sides of the rear chamber 111 (only one is shown). Each mount bracket 142 is formed in a plate shape, for example, and is formed in a rectangular shape extending in the vehicle front-rear direction.

  A base end of the first coil spring 145 is fixed to the upper side of the base end of each mount bracket 142 on the vehicle front side, and a second coil spring 146 is set to the lower side of the base end of each mount bracket 142. The base ends of each are fixed. The first coil spring 145 and the second coil spring 146 provided on each mount bracket 142 are spaced apart from each other, and the tips of the coil springs 145 and 146 are connected via a connecting plate 147. Yes. The base ends of the wire cables 149 are fixed to the central portion of the connecting plate 147 provided on each mount bracket 142 by a clasp 148, respectively.

  Accordingly, each mounting bracket 142 is formed with an auxiliary force applying structure 151 that applies the urging force of the coil springs 145 and 146 to the corresponding wire cable 149.

  The tip of each wire cable 149 constituting each auxiliary force applying structure 151 is fixed to a corresponding side surface of the slope main body 124 constituting the slope 123, and each wire cable 149 to the slope main body 124 is fixed. The fixed point 161 is set at an intermediate portion of the side surface of the slope main body 124.

  Pulleys 171 are rotatably supported at the front end portions of the mount brackets 142 on the vehicle rear side, and the wire cables 149 of the corresponding auxiliary force applying structures 151 are hung on the pulleys 171. Yes. Thus, the wire cables 149 of the auxiliary force applying structures 151 are arranged between the coil springs 145 and 146 and the slope 123.

  Each pulley 171 is positioned higher than each fixing point 161 of each wire cable 149 to the slope 123 in the deployed state 133 and each fixing point 161 to the slope 123 in the retracted state 131. The extension position 175 of the wire cable 149 from the vehicle body 121 side to the slope 123 side is set to a position higher than the fixed point 161 of the slope 123 in each of the states 131 and 133. Has been.

  As a result, the pulley 171 constitutes a conversion means for converting the acting direction of the urging force applied from the coil springs 145 and 146 to the wire cable 149 into the slope pulling direction 181 of the slope 123.

  The coil springs 145 and 146 and the wire cable 149 constituting the auxiliary force applying structure 151 are in a state in which both the coil springs 145 and 146 are extended in the length direction with the slope 123 in the unfolded state 133. The coil springs 145, 146 are fixed to the slope 123 with the tips of the coil springs 145, 146 not interfering with the pulley 171 and the slope 123 being in the retracted state 131 and the coil springs 145, 146 being contracted in the length direction. Further, the length dimension of the coil springs 145 and 146 and the length dimension of the wire cable 149 are set so that the wire cable 149 can be pulled into the coil springs 145 and 146 without slack.

  As a result, the slope 123 is rotated between the retracted state 131 where the slope 123 supported by the vehicle body 121 is erected and the deployed state 133 where the slope 123 is tilted so as to extend out of the cabin O. At the time of dynamic operation, the biasing force from the coil springs 145 and 146 is applied in the slope pulling direction 181 so that the rotation operation of the slope 123 can be assisted.

  In the present embodiment according to the above configuration, the biasing force applied to the wire cable 149 from the coil springs 145 and 146 of the auxiliary force applying structure 151 is the slope pulling direction in which the acting direction pulls up the slope 123. 181 is converted. For this reason, the urging force applied to the wire cable 149 from the coil springs 145 and 146 can be used as an auxiliary force for lifting the slope 123.

  At this time, the urging forces of the coil springs 145 and 146 are transmitted to the slope 123 via the wire cable 149, and the wire cable 149 is interposed between the coil springs 145 and 146 and the slope 123. Is arranged.

  Therefore, the tension spring between the vehicle body 121 and the slope 123 is compared with the conventional case where a tension spring composed of coil springs 145 and 146 must be provided between the vehicle body 121 and the slope 123. Can be abolished. Thereby, in the said unfolding state 133, compared with the case where a coil spring is exposed on the said slope 123, it can improve appearance.

  In addition, since the wire cable 149 is formed between the coil springs 145 and 146 provided in the vehicle interior and the slope 123, the arrangement of the coil springs 145 and 146 can be given a degree of freedom. As a result, the coil springs 145 and 146 can be arranged in a space that does not get in the way during normal use, so that the dead space can be effectively utilized.

  By arranging both the coil springs 145 and 146 in the dead space, it becomes possible to use a spring having a large wire diameter, coil diameter, etc. in the dead space, and a pair of coil springs as in the present embodiment. 145 and 146 can be arranged side by side, and a high auxiliary force can be easily obtained. Thereby, the burden of the operator who opens and closes the slope 123 manually can be reduced.

  In addition, the floor 122 surface can be used effectively compared to the conventional case where the bracket protrudes greatly toward the vehicle interior due to the structure in which a large bracket is provided on the floor 122 surface.

  Therefore, improvement of auxiliary power and effective use of space can be realized at the same time.

  The extension position 175 of the wire cable 149 from the vehicle body 121 side to the slope 123 side is maintained at a high position by the pulley 171, and the wire cable 149 to the slope 123 in the unfolded state 133 is maintained. By setting the position higher than the fixed point 161, the urging force applied to the wire cable 149 from the coil springs 145 and 146 can be used as the lifting force of the slope 123.

With such a simple structure, conversion means for converting the direction of application of the urging force applied to the wire cable 149 into the slope pulling direction 181 can be configured, and the structure can be simplified. it can.

  (Third embodiment)

  The third embodiment of the present invention will be described below with reference to the drawings. FIG. 3 is a diagram showing a slope opening / closing assisting device 201 according to the present embodiment, and the slope opening / closing assisting device 201 is installed in a welfare vehicle 202.

  That is, the welfare vehicle 202 is provided with a rear chamber 211 in the vehicle interior I, and the rear chamber 211 is configured so that a wheelchair can be boarded. A back door opening 212 is provided in the rear part of the rear chamber 211, and the back door opening 212 is configured to be opened and closed by a back door (not shown).

  A base end portion of a slope main body 224 constituting the slope 223 is turnable via a hinge 225 at a rear end portion of the riding slope surface 222 a formed on the floor 222 constituting the vehicle body 221 of the welfare vehicle 202. The slope body 224 is supported by the vehicle body 221 of the welfare vehicle 202.

  The slope body 224 includes, for example, a proximal slope and a distal slope connected so as to be foldable (not shown), a foldable type that can be folded and stored, and a distal end on the proximal slope. There is known a slide type in which a side slope is slidably provided and a tip side slope can be stored on top of a base side slope.

  The slope 223 is configured to be able to form a storage state 231 that stands up with respect to the floor 222, and is configured to be able to store the slope 223 in the rear chamber 211 by forming the storage state 231. ing. Further, the slope 223 can be rotated about the support point 232 by the hinge 225 and tilted to form an unfolded state 233 extending out of the passenger compartment O through the back door opening 212. In this unfolded state 233, an inclined surface is formed between the floor 222 and the road surface, so that wheelchairs can get in and out of the rear chamber 211.

  Mount brackets 242 are fixed to both sides of the rear chamber 211 (only one is shown). Each mount bracket 242 is formed in a plate shape, for example, and is formed in a rectangular shape extending in the vehicle front-rear direction.

  The base end of the first coil spring 245 is fixed to the upper side of the base end of each mount bracket 242 on the vehicle front side, and the second coil spring 246 is fixed to the lower side of each mount bracket 242 base end. The base ends of each are fixed. The first coil spring 245 and the second coil spring 246 provided on each mount bracket 242 are spaced apart from each other, and the tips of the coil springs 245 and 246 are connected via a connecting plate 247 as an equalizer. It is connected.

  A through hole 248 is provided at the center of the connecting plate 247 provided at the distal ends of the coil springs 245 and 246, and the base end of the wire cable 249 is inserted into the through hole 248. . Accordingly, the coil springs 245 and 246 are provided with cable insertion portions through which the wire cable 249 is movably inserted.

  A stopper 250 having a diameter larger than that of the through hole 248 is fixed to the tip of the wire cable 249 inserted through the connecting plate 247, and the stopper 250 prevents the wire cable 249 from coming out of the through hole 248. Is prevented.

  As a result, each mounting bracket 242 is formed with an auxiliary force applying structure 251 that applies the urging force of the coil springs 245 and 246 to the corresponding wire cable 249.

  A bottomed cylindrical container portion 255 is fixed to the rear surface of the connecting plate 247 on the front side of the vehicle, and an accommodating portion for accommodating the wire cable 249 inserted through the through hole 248 by the container portion 255. 256 is formed on the back side of the connecting plate 247.

  As a result, when the slope 223 in the retracted state 231 is shifted to the deployed state 233, the stopper 250 at the distal end of the wire cable 249 comes into contact with the connecting plate 247 as the equalizer, and each coil spring 245 and 246 can be started to be expanded.

  The tip of each wire cable 249 constituting each auxiliary force applying structure 251 is fixed to a corresponding side surface of the slope body 224 constituting the slope 223, and each wire cable 249 to the slope body 224 is fixed. The fixed point 261 is set at an intermediate portion of the side surface of the slope body 224.

  Pulleys 271 are rotatably supported at the front end portions of the mounting brackets 242 on the vehicle rear side, and wire pulleys 249 of corresponding auxiliary force applying structures 251 are hung on the pulleys 271. Yes. Accordingly, the wire cables 249 of the auxiliary force applying structures 251 are arranged between the coil springs 245 and 246 and the slope 223.

  Each pulley 271 is positioned higher than each fixing point 261 of each wire cable 249 to the slope 223 in the deployed state 233, and each fixing point 261 to the slope 223 in the retracted state 231. The extension position 275 of the wire cable 249 from the vehicle body 221 side to the slope 223 side is set higher than the fixed point 261 of the slope 223 in each of the states 231 and 233. Has been.

  As a result, the pulley 271 constitutes conversion means for converting the direction of action of the urging force applied to the wire cable 249 from the coil springs 245 and 246 into the slope pulling direction 281 of the slope 223.

  The coil springs 245 and 246 and the wire cable 249 constituting the auxiliary force applying structure 251 are in a state where both the coil springs 245 and 246 are extended in the length direction with the slope 223 in the deployed state 233. In the state where the connecting plate 247 provided at the tips of the coil springs 245 and 246 does not interfere with the pulley 271 and the slope 223 is in the retracted state 231 and the coil springs 245 and 246 are contracted in the length direction. The lengths of the coil springs 245 and 246 are set so that the wire cable 249 fixed to the slope 223 is pulled toward the coil springs 245 and 246 and the leading end thereof can be accommodated in the accommodating portion 256. The length dimension of the wire cable 249 is set. That.

  Accordingly, the slope 223 is rotated between the retracted state 231 in which the slope 223 supported by the vehicle body 221 is erected and the unfolded state 233 in which the slope 223 is tilted so as to extend out of the cabin O. When the moving operation is performed, the biasing force from the coil springs 245 and 246 is applied to the slope pulling direction 281 so that the rotation operation of the slope 223 can be assisted.

  In the present embodiment according to the above configuration, the biasing force applied to the wire cable 249 from the coil springs 245 and 246 of the auxiliary force applying structure 251 is the slope pulling direction in which the acting direction pulls up the slope 223. It is converted to 281. Therefore, the urging force applied to the wire cable 249 from both the coil springs 245 and 246 can be used as an auxiliary force for pulling up the slope 223.

  At this time, the urging forces of the coil springs 245 and 246 are transmitted to the slope 223 via the wire cable 249, and the wire cable 249 is interposed between the coil springs 245 and 246 and the slope 223. Is arranged.

  Therefore, a tension spring between the vehicle body 221 and the slope 223 is compared with the conventional case where a tension spring composed of coil springs 245 and 246 must be provided between the vehicle body 221 and the slope 223. Can be abolished. Thereby, in the unfolded state 233, the appearance can be improved as compared with the case where the coil spring is exposed on the slope 223.

  Further, since the wire cable 249 is formed between the coil springs 245 and 246 provided in the vehicle interior and the slope 223, the arrangement of the coil springs 245 and 246 can be provided with a degree of freedom. As a result, the coil springs 245 and 246 can be arranged in a space that does not get in the way during normal use, so that the dead space can be effectively utilized.

  By arranging both the coil springs 245 and 246 in the dead space, it becomes possible to use a spring having a large wire diameter, coil diameter, etc. in the dead space, and a pair of coil springs as in the present embodiment. 245 and 246 can be arranged side by side, and a high auxiliary force can be easily obtained. Thereby, the burden of the operator who opens and closes the slope 223 manually can be reduced.

  Further, the floor 222 surface can be effectively used compared to the conventional case where the bracket protrudes greatly toward the vehicle interior due to the structure in which a large bracket is provided on the floor 222 surface.

  Therefore, improvement of auxiliary power and effective use of space can be realized at the same time.

  The extension position 275 of the wire cable 249 from the vehicle body 221 side to the slope 223 side is maintained at a high position by the pulley 271, and the wire cable 249 to the slope 223 in the unfolded state 233 is maintained. By setting the position higher than the fixed point 261, the urging force applied to the wire cable 249 by the coil springs 245 and 246 can be used as the lifting force of the slope 223.

  With such a simple structure, conversion means for converting the direction of action of the urging force applied to the wire cable 249 into the slope pulling direction 281 can be configured, and the structure can be simplified. it can.

  Here, in order to obtain a high lever ratio, the extension position of the wire cable 249 extending from the slope 223 side to the vehicle body 221 side, that is, the fixing point 261 of the wire cable 249 is the support point 232 that is the rotation center of the slope 223. If the position is set away from the cable, the required cable length becomes longer. Accordingly, when the length of each of the coil springs 245 and 246 is increased, a large spring is required in consideration of durability, and the arrangement space of the coil springs 245 and 246 is increased.

  Therefore, in the present embodiment, when the slope 223 is in the retracted state 231, the end of the wire cable 249 is inserted through the through hole 248 that is a cable insertion portion of the connecting plate 247 as an equalizer. And can be accommodated in the accommodating portion 256 on the back side of the connecting plate 247.

  On the other hand, when the slope 223 in the retracted state 231 is tilted to move to the unfolded state 233, in the first stage, the wire cable 249 accommodated in the back side of the connecting plate 247 is passed through the through-hole. It can extend through the hole 248. As a result, the slope 223 can be allowed to tilt.

  In the second stage, the coil springs 245 and 246 start to be extended from the time when the retainer 250 provided on the wire cable 249 comes into contact with the connecting plate 247, and further tilting of the slope 223 is allowed. At the same time, the urging force of each of the coil springs 245 and 246 starts to act as an auxiliary force. Accordingly, the slope 223 can be allowed to tilt according to the extension of the coil springs 245 and 246, and the urging force of the coil springs 245 and 246 can act as an auxiliary force.

  At this time, the slope 223 is inclined from the first stage, and the operating force increases as the weight of the slope 223 increases. However, in this second stage, the urging force of each of the coil springs 245 and 246 can be used as an auxiliary force, so that the slope 223 is expanded or stored without increasing the size of the coil springs 245 and 246. The assistance of the operation can be efficiently performed at an appropriate position.

  Therefore, in order to obtain a high lever ratio, the extension position of the wire cable 249 extending from the slope 223 side to the vehicle body 221 side, that is, the fixed point 261 is separated from the support point 232 that is the rotation center of the slope 223. Even if the wire length of the wire cable 249 is increased, the spring force can be applied as an auxiliary force at an appropriate position without increasing the size of the coil springs 245 and 246. it can.

Thereby, compared with the case where spring length is lengthened according to cable length, the arrangement space of each said coil spring 245,246 can be made small.

  (Fourth embodiment)

  The fourth embodiment of the present invention will be described below with reference to the drawings. FIG. 4 is a diagram showing a slope opening / closing auxiliary device 701 according to the present embodiment, and the slope opening / closing auxiliary device 701 is installed in a welfare vehicle 702.

  That is, the welfare vehicle 702 is provided with a rear chamber 711 in the passenger compartment I, and the rear chamber 711 is configured so that a wheelchair can be boarded. A back door opening 712 is provided in the rear portion of the rear chamber 711, and the back door opening 712 is configured to be opened and closed by a back door (not shown).

  A base end portion of a slope main body 724 constituting the slope 723 is rotatable via a hinge 725 at a rear end portion of the slope surface 722a for entering formed on the floor 722 constituting the vehicle body 721 of the welfare vehicle 702. The slope body 724 is supported by the vehicle body 721 of the welfare vehicle 702.

  The slope main body 724 is composed of, for example, a base slope and a tip slope connected so as to be foldable (not shown), and is a foldable type that can be folded and stored, or a tip on the base slope. There is known a slide type in which a side slope is slidably provided and a tip side slope can be stored on top of a base side slope.

  The slope 723 is configured to be able to form a storage state 731 that stands up with respect to the floor 722, and is configured to be able to store the slope 723 in the rear chamber 711 by forming the storage state 731. ing. Further, the slope 723 can be rotated about a support point 732 by the hinge 725 and tilted to form an unfolded state 733 extending out of the passenger compartment O via the back door opening 712. In this unfolded state 733, an inclined surface is formed between the floor 722 and the road surface, so that wheelchairs can get in and out of the rear chamber 711.

  In the rear chamber 711, seats 741 are provided at left and right portions, and a unit case 742 is fixed to the floor 722 surface below each seat 741 (only one is shown). Each unit case 742 is formed in a box shape, and is formed in a rectangular shape extending in the vehicle front-rear direction.

  The base end of the first coil spring 745 is fixed to the right side of the front wall surface 742f on the vehicle front side of each unit case 742, and the second coil spring is positioned on the left side of the front wall surface 742f of each unit case 742. The base ends of 746 are fixed. The first coil springs 745 and the second coil springs 746 provided in each unit case 742 are spaced apart from each other, and the ends of the coil springs 745 and 746 are connected via a connecting plate 747 as an equalizer. It is connected.

  A through hole 748 is provided at the center of the connecting plate 747 provided at the distal ends of the coil springs 745 and 746, and the base end of the wire cable 749 is inserted into the through hole 748. . Accordingly, the coil springs 745 and 746 are provided with cable insertion portions through which the wire cable 749 is movably inserted.

  A stopper 750 having a diameter larger than that of the through hole 748 is fixed to the distal end of the wire cable 749 inserted through the connecting plate 747, and the stopper 750 prevents the wire cable 749 from coming out of the through hole 748. Is prevented.

  As a result, each unit case 742 is provided with an auxiliary force applying structure 751 that applies the urging force of the coil springs 745 and 746 to the corresponding wire cable 749, and each of these auxiliary force applying structures 751 is provided. Is disposed in a lower space of the sheet 741 which is a dead space.

  A bottomed cylindrical container portion 755 is fixed to the rear surface of the connecting plate 747 on the front side of the vehicle, and an accommodating portion for accommodating the wire cable 749 inserted through the through hole 748 by the container portion 755. 756 is formed on the back side of the connecting plate 747.

  The wire cable 749 extending from the connecting plate 747 extends to the outside of the unit case 742 through an insertion hole provided in a rear wall surface 742r on the vehicle rear side of each unit case 742.

  The wire cable 749 extending from the unit case 742 is movably surrounded by a hose-like outer cable 761, and the outer cable 761 is erected on the unit case 742 and the floor 722. 762. Accordingly, the base end 763 of the outer cable 761 is fixed in a state of being inserted through the rear wall surface 742r of the unit case 742, and the distal end 764 is fixed to the upper end portion of the support column 762.

  The distal end of the wire cable 749 extending from the distal end 764 of the outer cable 761 is fixed to the side surface of the slope main body 724 constituting the slope 723, and the wire cables 749 are fixed to the slope main body 724. A point 765 is set at an intermediate portion of the side surface of the slope body 724. Accordingly, an extension portion of the wire cable 749 extending from the outer cable 761 is disposed between the vehicle body 721 and the slope 723.

  The outer cable 761 tip 764 is positioned higher than the fixing point 765 of the wire cable 749 to the slope 723 in the deployed state 733 and from the fixing point 765 to the slope 723 in the retracted state 731. The extension position 775 of the wire cable 749 from the vehicle body 721 side to the slope 723 side is set higher than the fixed point 765 of the slope 723 in each of the states 731 and 733. ing.

  As a result, the conversion means for converting the acting direction of the urging force applied from the coil springs 745 and 746 to the wire cable 749 into the slope pulling direction 781 of the slope 723 is constituted by the fixed position of the outer cable 761 tip 764. Has been.

  The coil springs 745 and 746 and the wire cable 749 constituting the auxiliary force applying structure 751 are in a state where both the coil springs 745 and 746 are extended in the length direction with the slope 723 in the deployed state 733. The connecting plates 747 fixed to the coil springs 745 and 746 do not contact the rear wall surface 742r of the unit case 742, and the slopes 723 are set in the retracted state 731 so that the coil springs 745 and 746 are long. The wire cable 749 fixed to the slope 723 is pulled toward the coil springs 745 and 746 while the tip end of the wire cable 749 can be accommodated in the accommodating portion 756. The length dimension of each coil spring 745,746 and A length of the serial wire cable 749 is set.

  Accordingly, the slope 723 is rotated between the retracted state 731 where the slope 723 supported by the vehicle body 721 is erected and the unfolded state 733 where the slope 723 is tilted so as to extend out of the passenger compartment O. When the moving operation is performed, the biasing force from the coil springs 745 and 746 is applied to the slope pulling direction 781 to assist the rotation operation of the slope 723.

  In the present embodiment according to the above configuration, the biasing force applied to the wire cable 749 from the coil springs 745 and 746 of the auxiliary force applying structure 751 is the slope pulling direction in which the acting direction pulls up the slope 723. 781 is converted. Therefore, the urging force applied to the wire cable 749 from the coil springs 745 and 746 can be used as an auxiliary force for pulling up the slope 723.

  At this time, the urging force of the coil springs 745 and 746 is transmitted to the slope 723 via the wire cable 749, and the wire cable 749 is interposed between the coil springs 745 and 746 and the slope 723. Is arranged.

  For this reason, the tension spring between the vehicle body 721 and the slope 723 is compared with the conventional case where a tension spring composed of coil springs 745 and 746 must be provided between the vehicle body 721 and the slope 723. Can be abolished. Thereby, in the unfolded state 733, the appearance can be improved as compared with the case where the coil spring is exposed on the slope 723.

  Further, since the wire cable 749 is formed between the two coil springs 745 and 746 provided in the vehicle interior and the slope 723, the arrangement of the two coil springs 745 and 746 can be given a degree of freedom. As a result, the coil springs 745 and 746 can be disposed in the lower space of the seat 741 that does not get in the way during normal use, so that the dead space below the seat 741 can be used effectively and the floor through which the wheelchair passes is provided. 722 can be widely used.

  By arranging the coil springs 745 and 746 in the dead space, it becomes possible to use a spring having a large wire diameter or coil diameter in the dead space, and a pair of coil springs as in the present embodiment. 745 and 746 can be arranged side by side, and a high auxiliary force can be easily obtained. Thereby, the burden of the operator who opens and closes the slope 723 manually can be reduced.

  Further, the floor 722 surface can be effectively used compared to the conventional case where the bracket protrudes greatly toward the vehicle interior due to the structure in which a large bracket is provided on the floor 722 surface.

  Therefore, improvement of auxiliary power and effective use of space can be realized at the same time.

  The portions of the wire cable 749 on both coil springs 745 and 746 are covered with an outer cable 761, and the wire cable 749 constituting the coil springs 745 and 746 covered with the outer cable 761. This part can be routed by bending or extending it.

  As a result, it is possible to further increase the degree of freedom in arranging the coil springs 745 and 746 while preventing problems caused by interference with the other of the wire cable 749. The unit case 742 provided with the coil springs 745 and 746 can be disposed below the seat 741 that was a dead space.

  Then, the extension position 775 of the wire cable 749 from the vehicle body 721 side to the slope 723 side is maintained at a high position by the fixing position of the outer cable 761 tip 764, and the slope 723 is in the deployed state 733. By setting the position higher than the fixed point 765 of the wire cable 749, the urging force applied to the wire cable 749 by the coil springs 745 and 746 can be used as the lifting force of the slope 723.

  Thereby, without providing another member such as a pulley, it is possible to configure a conversion means for converting the direction of action of the urging force applied to the wire cable 749 into the slope pulling direction 781, further simplifying the structure. Can be achieved.

  Here, in order to obtain a high lever ratio, an extension position of the wire cable 749 extending from the slope 723 side to the vehicle body 721 side, that is, a fixing point 765 of the wire cable 749 is a support point 732 that is the rotation center of the slope 723. If the position is set away from the cable, the required cable length becomes longer. Accordingly, when the length of each of the coil springs 745 and 746 is increased, a large spring is required in consideration of durability, and the arrangement space of the coil springs 745 and 746 is increased.

  Therefore, in the present embodiment, when the slope 723 is in the retracted state 731, the end portion of the wire cable 749 is inserted through the through hole 748 that is a cable insertion portion of the connecting plate 747 as an equalizer. And can be housed in the housing portion 756 on the back side of the connecting plate 747.

  On the other hand, when the slope 723 in the retracted state 731 is tilted to move to the unfolded state 733, the wire cable 749 accommodated in the back side of the connecting plate 747 is passed through the through-hole in the first step. It can extend through hole 748. As a result, the slope 723 can be allowed to tilt.

  In the second stage, the coil springs 745 and 746 start to be extended from the point in time when the retainer 750 provided on the wire cable 749 comes into contact with the connecting plate 747, and further tilting of the slope 723 is allowed. At the same time, the urging forces of the coil springs 745 and 746 start to act as auxiliary forces. Accordingly, the slope 723 can be allowed to tilt according to the extension of the coil springs 745 and 746, and the urging force of the coil springs 745 and 746 can act as an auxiliary force.

  At this time, the slope 723 is inclined from the first stage, and the operating force increases as the weight of the slope 723 increases. However, in this second stage, since the urging force of each of the coil springs 745 and 746 can be used as an auxiliary force, the slope 723 is expanded or stored without increasing the size of the coil springs 745 and 746. The assistance of the operation can be efficiently performed at an appropriate position.

  Therefore, in order to obtain a high lever ratio, the extension position of the wire cable 749 extending from the slope 723 side to the vehicle body 721 side, that is, the fixing point 761 is separated from the support point 732 which is the rotation center of the slope 723. Even if the wire length of the wire cable 749 is increased, the spring force can be applied as an auxiliary force at an appropriate position without increasing the size of the coil springs 745 and 746. it can.

Thereby, compared with the case where spring length is lengthened according to cable length, the arrangement space of each said coil spring 745,746 can be made small.

  (Fifth embodiment)

  FIG. 5 is a diagram showing a slope opening / closing assisting device 801 according to the fifth embodiment of the present invention. The same or similar parts as those of the fourth embodiment are denoted by the same reference numerals and description thereof is omitted. In addition, only different parts will be described.

  That is, the base end portion of the slope main body 724 constituting the slope 723 rotates via the hinge 725 at the rear end portion of the slope surface 722 a for entering formed on the floor 722 constituting the vehicle body 721 of the welfare vehicle 702. The slope body 724 is supported by the vehicle body 721 of the welfare vehicle 702.

  The back surface of the slope body 724 is a dead space that is not normally used, and the unit case 742 containing the first coil spring 745 and the second coil spring 746 is provided on the back surface of the slope body 724. .

  The rear end wall surface 742r of the unit case 742 is fixed with a base end 763 of an outer cable 761 made of a metal tube surrounding the wire cable 749 so as to be movable, and the wire extending from the front end 764 of the outer cable 761 is fixed. The cable 249 is fixed to a fixing point 765 of a column 762 erected on the floor 722.

  Also in the present embodiment having the above-described configuration, it is possible to obtain the same effects as those of the fourth embodiment described above.

In addition, by providing the unit case 742 in the dead space on the back surface of the slope body 724, it is not necessary to fix the unit case 742 to the floor 722, and the vehicle interior can be used widely.

  (Sixth embodiment)

  The sixth embodiment of the present invention will be described below with reference to the drawings. FIG. 6 is a diagram showing a slope opening / closing auxiliary device 401 according to the present embodiment, and the slope opening / closing auxiliary device 401 is installed in a welfare vehicle 402.

  That is, the welfare vehicle 402 is provided with a rear chamber 411 in the vehicle interior I, and the rear chamber 411 is configured so that a wheelchair can be boarded. A back door opening 412 is provided in the rear part of the rear chamber 411, and the back door opening 412 is configured to be opened and closed by a back door (not shown).

  A base end portion of a slope main body 424 constituting the slope 423 is turnable via a hinge 425 at a rear end portion of the riding slope surface 422a formed on the floor 422 constituting the vehicle body 421 of the welfare vehicle 402. The slope body 424 is supported by the vehicle body 421 of the welfare vehicle 402.

  The slope body 424 includes, for example, a base-side slope and a tip-side slope that are connected so as to be foldable (not shown), a foldable type that can be folded and stored, or a tip on the base-side slope. There is known a slide type in which a side slope is slidably provided and a tip side slope can be stored on top of a base side slope.

  The slope 423 is configured to be able to form a storage state 431 that stands up with respect to the floor 422, and is configured to be able to store the slope 423 in the rear chamber 411 by forming the storage state 431. ing. In addition, the slope 423 can be tilted by rotating about a support point 432 by the hinge 425 so as to form an unfolded state 433 extending out of the passenger compartment O via the back door opening 412. In this unfolded state 433, an inclined surface is formed between the floor 422 and the road surface, and the wheelchair can be assisted in getting on and off the rear chamber 411.

  On both sides of the rear chamber 411, support columns 442 are erected along the back door opening 412 (only one is shown). A bottomed cylindrical holder 443 is fixed to a portion of the floor 422 on the front side of the vehicle from the support column 442, and the holder 443 extends toward the front of the vehicle.

  A coil spring 445 is accommodated in each holder 443 so as to be extendable and contracted, and a slide plate 446 having the same diameter or a large diameter as the coil spring 445 is disposed in the holder 443 at the proximal end side of the coil spring 445. Is accommodated so as to be movable in the length direction.

  The opening on the vehicle rear side of the holder 443 is closed by a closing lid 447, and the coil spring 445 is prevented from being detached. The closing lid 447 is provided with a through hole (not shown), and the base end portion of the wire cable 449 is inserted into the through hole. The wire cable 449 is inserted through the central portion of the coil spring 445, and the end thereof is fixed to the slide plate 446 provided on the base end side of the coil spring 445.

  As a result, the rear chamber 411 is provided with an auxiliary force applying structure 451 that applies the urging force of the coil spring 445 to the corresponding wire cable 449.

  The wire cable 449 extending from each holder 443 is movably surrounded by a hose-shaped outer cable 455, and the outer cable 455 is provided between the holder 443 and the support column 442. . Thereby, the base end 456 of the outer cable 455 is fixed to the closing lid 447 of the holder 443, and the tip 457 is fixed to the support column 442.

  The distal end of the wire cable 449 extending from the distal end 457 of the outer cable 455 is fixed to the side surface of the slope body 424 constituting the slope 423, and the fixing point of each wire cable 449 to the slope body 424 is fixed. Reference numeral 461 is set at an intermediate portion of the side surface of the slope body 424. Accordingly, an extension portion of the wire cable 449 extending from the outer cable 455 is disposed between the vehicle body 421 and the slope 423.

  The outer cable 455 tip 457 is at a higher position than the fixing point 461 of the wire cable 449 to the slope 423 in the deployed state 433, and from the fixing point 461 to the slope 423 in the retracted state 431. The extension position 475 of the wire cable 449 from the vehicle body 421 side to the slope 423 side is set higher than the fixed point 461 of the slope 423 in each of the states 431 and 433. ing.

  As a result, the converting means for converting the acting direction of the urging force applied from the coil spring 445 to the wire cable 449 into the slope pulling direction 481 of the slope 423 is constituted by the fixed position of the outer cable 455 tip 457. .

  The coil spring 445 and the wire cable 449 constituting the auxiliary force applying structure 451 are configured such that the coil spring 445 is in a state in which the slope 423 is in the unfolded state 433 and the coil spring 445 is contracted in the length direction. When the both sides of the coil springs 445 are extended in the length direction with the slope 423 in the retracted state 431 without being fully reduced, the slide plate 446 provided on the proximal end side of the coil springs 445 has the holder 443. The length dimension of the coil spring 445 and the length dimension of the wire cable 449 are set so as not to contact the end portion of the wire cable 449.

  As a result, the slope 423 is rotated between the retracted state 431 where the slope 423 supported by the vehicle body 421 is erected and the unfolded state 433 where the slope 423 is tilted so as to extend out of the passenger compartment O. When the moving operation is performed, the biasing force from the coil spring 445 is applied to the slope pulling direction 481 so that the rotating operation of the slope 423 can be assisted.

  In this embodiment according to the above configuration, the urging force applied from the coil spring 445 of the auxiliary force applying structure 451 to the wire cable 449 is converted into a slope pulling direction 481 in which the acting direction pulls up the slope 423. Is done. For this reason, the urging force applied to the wire cable 449 from the coil spring 445 can be used as an auxiliary force for lifting the slope 423.

  At this time, the urging force of the coil spring 445 is transmitted to the slope 423 via the wire cable 449, and the wire cable 449 is disposed between the coil spring 445 and the slope 423. Yes.

  For this reason, the tension spring is arranged between the vehicle body 421 and the slope 423 as compared with the conventional case where a tension spring composed of a coil spring 445 must be provided between the vehicle body 421 and the slope 423. Can be abolished. Thereby, in the said unfolding state 433, compared with the case where a coil spring is exposed on the said slope 423, an appearance can be improved.

  Further, since the wire cable 449 is formed between the coil spring 445 provided in the vehicle interior and the slope 423, the arrangement of the coil spring 445 can be given a degree of freedom. Accordingly, both the coil springs 445 can be arranged in a space that does not get in the way during normal use, so that the dead space can be effectively utilized.

  By disposing the coil spring 445 in the dead space, it becomes possible to use a spring having a large wire diameter, coil diameter, etc. in the dead space, and a high auxiliary force can be easily obtained. Thereby, the burden of the operator who opens and closes the slope 423 manually can be reduced.

  In addition, because of the structure in which a large bracket is provided on the floor 422 surface, the floor 422 surface can be effectively used as compared with the conventional case in which the bracket protrudes greatly toward the vehicle interior.

  Therefore, improvement of auxiliary power and effective use of space can be realized at the same time.

  Further, the extension position 475 of the wire cable 449 from the vehicle body 421 side to the slope 423 side is maintained at a high position by the fixing position of the outer cable 455 tip 457, and the slope 423 in the unfolded state 433 is reached. By setting the position higher than the fixed point 461 of the wire cable 449, the biasing force applied to the wire cable 449 from the coil spring 445 can be used as the lifting force of the slope 423.

  With such a simple structure, conversion means for converting the direction of application of the urging force applied to the wire cable 449 into the slope pulling direction 481 can be configured, and the structure can be simplified. it can.

  In addition, a portion of the wire cable 449 on the coil spring 445 side is covered with an outer cable 455, and the portion of the wire cable 449 constituting the coil spring 445 side covered with the outer cable 455 is bent. You can route it.

  For this reason, the degree of freedom of the arrangement of the coil spring 445 can be further increased, and problems caused by interference with others can be prevented in advance.

  Further, by setting the tip 457 of the outer cable 455 from which the wire cable 449 extends to a position higher than the fixing point 461 of the wire cable 449 to the slope 423 in the deployed state 433, the coil spring The urging force applied to the wire cable 449 from 445 can be used as the lifting force of the slope 423.

Thereby, without providing another member such as a pulley, it is possible to configure a conversion means for converting the direction of action of the urging force applied to the wire cable 449 into the slope pulling direction 481, further simplifying the structure. Can be achieved.

  (Seventh embodiment)

  FIG. 7 is a diagram showing a seventh embodiment of the present invention, where parts that are the same as or similar to those in the sixth embodiment are assigned the same reference numerals and explanations are omitted, and different parts are attached. Only explained.

  That is, on both sides of the rear chamber 411 of the welfare vehicle 402, the column 442 is erected along the back door opening 412 (only one is shown), and is separated from the column 442 toward the vehicle front side. A pair of support bars 501 and 501 are erected on the part so as to be separated from each other in the vehicle front-rear direction.

  A bottomed cylindrical holder 443 is fixed to the ends of the support bars 501 and 501, and the holder 443 extends toward the front of the vehicle.

  A coil spring 445 is accommodated in each holder 443 so as to be extendable and contracted, and a slide plate 446 having the same diameter or a large diameter as the coil spring 445 is disposed in the holder 443 at the proximal end side of the coil spring 445. Is accommodated so as to be movable in the length direction.

  The opening on the vehicle rear side of the holder 443 is closed by a closing lid 447, and the coil spring 445 is prevented from being detached. The closing lid 447 is provided with a through hole (not shown), and the base end portion of the wire cable 449 is inserted into the through hole. The wire cable 449 is inserted through the central portion of the coil spring 445, and the end thereof is fixed to the slide plate 446 provided on the base end side of the coil spring 445.

  Accordingly, the support bars 501 and 501 are provided with an auxiliary force applying structure 451 for applying the urging force of the coil spring 445 to the corresponding wire cable 449, and each of these auxiliary force applying structures 451 is provided. A handrail 511 is formed at a position away from the floor 422 by the corresponding support bars 501 and 501 and is gripped by a passenger in the rear chamber 411 during movement.

  In the present embodiment having the above configuration, the same operational effects as those of the sixth embodiment described above can be obtained.

  In addition, a handrail 511 can be configured by the holder 443 that houses the coil spring 445. Thereby, since the holder 443 can be effectively used, convenience is improved.

Further, the appearance can be improved and the appearance quality can be improved as compared with the case where the coil spring 445 and the mechanism portion are exposed.

  (Eighth embodiment)

  FIG. 8 is a diagram showing a fifth embodiment of the present invention, where parts that are the same as or similar to those in the sixth embodiment are given the same reference numerals and explanations are omitted, and parts that are different are attached. Only explained.

  That is, support brackets 602 are provided on both sides of the back door opening 412 on the rear wall surface 601 provided with the back door opening 412 in the rear chamber 411 of the welfare vehicle 402. A bottomed cylindrical holder 443 is fixed to the tip of the support bracket 602, and the holder 443 extends in the vertical direction along the back door opening 412.

  A coil spring 445 is accommodated in each holder 443 so as to be extendable and contracted, and a slide plate 446 having the same diameter or a large diameter as the coil spring 445 is disposed in the holder 443 at the proximal end side of the coil spring 445. Is accommodated so as to be movable in the length direction.

  The lower opening of the holder 443 is closed by a closing lid 447, and the coil spring 445 is prevented from being detached. The closing lid 447 is provided with a through hole (not shown), and the base end portion of the wire cable 449 is inserted into the through hole. The wire cable 449 is inserted through the central portion of the coil spring 445, and the end thereof is fixed to the slide plate 446 provided on the base end side of the coil spring 445.

  As a result, the support bracket 602 is provided with an auxiliary force applying structure 451 for applying the urging force of the coil spring 445 to the corresponding wire cable 449, and each of these auxiliary force applying structures 451 corresponds. A handrail 611 that is disposed at a position away from the rear wall surface 601 by the support bracket 602 toward the front of the vehicle and is gripped when the occupant gets on the back door opening 412 is formed.

  In the present embodiment having the above configuration, the same operational effects as those of the sixth embodiment described above can be obtained.

  In addition, the handrail 611 can be configured by the holder 443 in which the coil spring 445 is accommodated. Thereby, since the holder 443 can be effectively used, convenience is improved.

  Further, the appearance can be improved and the appearance quality can be improved as compared with the case where the coil spring 445 and the mechanism portion are exposed.

It is explanatory drawing which shows 1st embodiment of this invention. It is explanatory drawing which shows 2nd embodiment of this invention. It is explanatory drawing which shows 3rd embodiment of this invention. It is explanatory drawing which shows 4th embodiment of this invention, (a) is a side view, (b) is a top view. It is explanatory drawing which shows 5th embodiment of this invention, (a) is a side view, (b) is a figure which shows the state seen from the vehicle back. It is explanatory drawing which shows the 6th Embodiment of this invention. It is explanatory drawing which shows the 7th Embodiment of this invention. It is explanatory drawing which shows 8th embodiment of this invention. It is explanatory drawing which shows the conventional slope opening / closing auxiliary | assistance apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Slope opening / closing auxiliary | assistance 11 Rear chamber 21 Car body 22 Floor 23 Slope 31 Stored state 33 Unfolded state 43 Coil spring 45 Wire cable 51 Auxiliary force biasing structure 61 Fixed point 71 Pulley 75 Extension position 81 Slope opening / closing auxiliary device 101 Slope opening / closing auxiliary device 111 Rear chamber 121 Car body 122 Floor 123 Slope 131 Stored state 133 Unfolded state 145 First coil spring 146 Second coil spring 149 Wire cable 151 Auxiliary force biasing structure 161 Fixed point 171 Pulley 175 Extension position 181 Slope pulling direction 201 Slope opening / closing Auxiliary device 211 Rear chamber 221 Car body 222 Floor 223 Slope 231 Stored state 233 Expanded state 245 First coil spring 246 Second coil spring 247 Connecting plate 248 Through hole 249 Wire cable 250 Retaining prevention 251 Auxiliary force biasing structure 256 Housing portion 261 Fixing point 271 Pulley 275 Extension position 281 Slope lifting direction 401 Slope opening / closing auxiliary device 411 Rear chamber 421 Car body 422 Floor 423 Slope 431 Storing state 433 Deployed state 443 Holder 445 Coil spring 449 Wire cable 455 Outer cable 451 Auxiliary force urging structure 461 Fixing point 475 Extension position 481 Slope pulling direction 511 Handrail 611 Handrail 701 Slope opening / closing auxiliary device 711 Rear chamber 721 Slip body 722 Floor 73 723 Retracted state 733 unfolded state 745 first coil spring 746 second coil spring 747 connecting plate 748 through hole 749 wire cable 750 stopper 751 out 775 extending biasing structure 756 accommodating portion 761 outer cable 765 fixed points assisting force position 781 slope pulling direction 801 slope closing aid O car outdoor

Claims (5)

In the slope opening / closing assisting device that assists the turning operation of the slope when the turning operation is performed between the stowed standing state of the slope supported by the vehicle body and the deployed state tilted so as to extend out of the passenger compartment,
An auxiliary force applying structure for engaging the cable with the spring and applying an urging force of the spring to the cable;
The spring of the auxiliary force applying structure is provided on one of the vehicle body or the slope, and the cable of the auxiliary force applying structure is fixed to the other of the vehicle body or the slope, and the cable between the spring and the slope is connected with the cable. While configuring
A slope opening / closing assisting device comprising a converting means for converting an acting direction of an urging force applied to the cable from the spring into a pulling direction of the slope. The spring of the auxiliary force applying structure is provided on the vehicle body, the cable of the auxiliary force applying structure is fixed to the slope,
The conversion means is configured by setting an extension position of the cable from the vehicle body side to the slope side to be higher than a fixed point of the cable to the slope in the unfolded state. The slope opening / closing auxiliary device according to Item 1.   The spring is provided with an equalizer, the equalizer is provided with a cable insertion portion through which the cable is movably inserted, and the slope in the retracted state is brought into contact with the equalizer when the slope is shifted to the deployed state. The slope opening / closing assisting device according to claim 1 or 2, wherein a stopper for starting extension is provided at a tip portion of the cable inserted through the cable insertion portion.   The portion on the spring side of the cable is movably surrounded by an outer cable, and an extended portion of the cable extending from the outer cable is disposed between the vehicle body and the slope. Item 4. The slope opening / closing assisting device according to item 1, 2 or 3.   The slope opening / closing auxiliary device according to any one of claims 1 to 4, wherein a handrail is constituted by a cylindrical holder that houses the spring.

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