JP2007022335A - Lift device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular floor lift device capable of holding a moving floor horizontally with a surface of the earth at a descending position, and holding the moving floor so as to continuously tilt on the same surface with a vehicular floor at an ascending position. <P>SOLUTION: The vehicular floor lift device S comprises lifting portion supporting a plurality of parts of the moving floor 11; and driving force transmitting portion (a driving bar 27, and a slide bar 22) transmitting driving force by a driving means 40 to the lifting portion (a driving link, and a driven link), and driving the lifting portion only by predetermined driving amount. The lifting portion vertically moves a supporting part of the moving floor 11 when driven by the predetermined driving amount by the driving force transmitting portion. The length of a driving link rod and a driven link rod structuring the lifting portion can be adjusted by coupling a rod end and a strut with a male screw portion 31 and a female screw portion 32. Therefore, the lifting portion can be finely adjusted so as to eliminate level difference between the moving floor 11 and the vehicular floor 2 at a floor developing position. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an elevating device, and more particularly, to an elevating device that raises and lowers a movable floor at a step portion of a floor to alleviate a height difference between the floors.

In general, in a vehicle such as a one-box car, since the vehicle floor is set to be relatively high, a boarding / alighting step is provided on the boarding / alighting side so as to be one step lower.
However, if the step for getting on and off is provided on the vehicle floor, the effective area of the vehicle floor is reduced by that amount. Also, when an occupant is seated in a seat installed on the side or rear of the step for getting on and off, the occupant is forced to take an unnatural seating posture due to the recessed space by the step for getting on and off formed at the foot, or the recessed space There was an inconvenience that the baggage dropped. In view of these circumstances, various vehicle floor lift devices have been proposed (see, for example, Patent Document 1).

  For example, in the vehicle floor lift device described in Patent Document 1, a movable floor is disposed via a link mechanism in the step for getting on and off, and when the slide door is closed, the movable floor is moved to the step for getting on and off by the operation of the link mechanism. Ascending from the vicinity of the bottom of the vehicle to the same plane as the vehicle floor. As a result, when the slide door is closed, the area of the vehicle floor can be increased by closing the upper space of the boarding / alighting step.

JP-A-9-207673 (page 2-3, FIG. 1, FIG. 3)

By the way, there is a one-box car or the like in which the vehicle floor is not substantially horizontal with the ground surface but is set to an inclined surface that slightly tilts forward in the traveling direction. In this case, since the boarding / alighting step needs to be provided substantially horizontally with the ground surface, the boarding / alighting step and the vehicle floor are not parallel.
Therefore, when the vehicle floor lift device described in Patent Document 1 is applied to a vehicle in which the vehicle floor is not parallel to the ground surface, the movable floor is moved from the lowered position in the horizontal state to the vehicle floor side. If it is raised, there is a problem that a step remains between the vehicle floor and the movable floor due to the inclination of the vehicle floor, and the area of the vehicle floor cannot be effectively enlarged and the appearance is also deteriorated. there were.
Further, in order to make the movable floor and the vehicle floor flat, it has been demanded that the deployment position and posture of the movable floor can be adjusted even after the apparatus is assembled to the vehicle. Moreover, in order to be able to install in a vehicle type with different step shapes, it has been desired to be able to adjust the development position of the movable floor.

This invention is made | formed in view of the said problem, Comprising: The objective is to provide the raising / lowering apparatus which can adjust the attitude | position (inclination angle) and position in the raising position of a movable floor.
Another object of the present invention is to provide an elevating device that can hold the movable floor horizontally in the lowered position and can tilt and hold the movable floor in the raised position.

  According to the present invention, an object of the present invention is an elevating device comprising a movable floor, elevating means for elevating and lowering the movable floor between an upper position and a lower position, and a driving means for driving the elevating means. The elevating means transmits a plurality of elevating parts that respectively support a plurality of spaced apart parts of the movable floor, and a driving force by the driving means to the plurality of elevating parts to transmit the plurality of elevating parts to a predetermined level. A driving force transmission unit that drives by a driving amount, and the plurality of elevating units move a support portion of the movable floor by a predetermined moving amount when driven by the driving force transmitting unit by a predetermined driving amount. This is solved by the fact that the movable floor is moved up and down and the amount of movement of the support portion of the movable floor can be adjusted, and the position and inclination angle of the movable floor at the upper position can be adjusted. .

Thus, in the lifting apparatus of the present invention, the movable floor is configured to be movable up and down by the plurality of lifting units. The plurality of elevating parts are moved up and down by a predetermined movement amount when the driving force from the driving means is received via the driving force transmitting part. For this reason, the inclination angle of the movable floor in the lower position and the upper position can be made different.
Further, since the plurality of elevating units can adjust the amount of movement of the support portion of the movable floor, the inclination angle and position of the movable floor at the upper position can be adjusted. Thereby, the inclination angle and position of the movable floor can be corrected and used in accordance with the dimensional error of the constituent members, the difference in the step shape, and the like.

The elevating unit includes a drive link having one end connected to the drive force transmission unit, and a driven link having one end rotatably attached to the boarding step, and the drive link or the driven link. One of the two is pivotally connected to the support portion of the movable floor and the other end is pivotally connected to the intermediate portion, and at least one of the drive link and the follower link It is preferable that the length is adjustable.
Thus, by adjusting the length of either the drive link or the driven link provided between the lower position and the support portion of the movable floor, the amount of movement of the support portion of the movable floor can be adjusted. .

The elevating unit includes a drive link having one end connected to the drive force transmitting unit, and a driven link having one end rotatably attached to the vicinity of the lower position, and the drive link or the driven link. One of the two is pivotally connected to the support portion of the movable floor, and the other end is pivotally connected to a fulcrum position provided at the intermediate portion, and the fulcrum position is It is preferable that the configuration is changeable.
In this way, by adjusting the connection position (fulcrum position) of the drive link and the driven link provided between the lower position and the support portion of the movable floor, the movement amount of the support portion of the movable floor is adjusted. Can do.

  Further, according to the present invention, there is provided an elevating apparatus comprising a movable floor, elevating means for elevating the movable floor between an upper position and a lower position, and a driving means for driving the elevating means. The elevating means includes an elevating part having a plurality of support parts that respectively support a plurality of spaced apart parts of the movable floor, and a driving force transmitting part that transmits a driving force by the driving means to the elevating part. The elevating part moves the plurality of support parts up and down by a predetermined movement amount when driven by the driving force transmission part, and can adjust the movement amounts of the plurality of support parts, respectively. This is solved by being configured to be able to adjust the position and inclination angle of the movable floor at the upper position.

Thus, in the raising / lowering apparatus of this invention, the movable floor is comprised so that raising / lowering movement is possible by the some support part which an raising / lowering part has. The plurality of support portions are moved up and down by a predetermined amount of movement when receiving the driving force from the driving means via the driving force transmitting portion. For this reason, the inclination angle of the movable floor in the lower position and the upper position can be made different.
In addition, since the movement amounts of the plurality of support portions that respectively support the plurality of spaced apart portions of the movable floor can be adjusted, the inclination angle and position of the movable floor at the upper position can be adjusted. Thereby, the inclination angle and position of the movable floor can be corrected and used in accordance with the dimensional error of the constituent members, the difference in the step shape, and the like.

The plurality of support portions include a drive link having one end connected to the drive force transmission portion and the other end rotatably connected to the support portion of the movable floor, and one end rotating near the lower position. A follower link that is movably attached and has the other end pivotably connected to a support part of the movable floor, and the drive link and the intermediate part of the follower link are rotatable at a fulcrum position relative to each other. It is preferable that the length of at least one of the driving link and the driven link is adjustable.
In this way, by adjusting the length of either the drive link or the driven link provided between the lower position and the support portion that supports the movable floor, the movement amount of the support portion is adjusted to adjust the movable floor. The position and tilt can be adjusted.

The plurality of support portions include a drive link having one end connected to the drive force transmission portion and the other end rotatably connected to the support portion of the movable floor, and one end rotating near the lower position. A follower link that is movably attached and has the other end pivotably connected to a support part of the movable floor, and the drive link and the intermediate part of the follower link are rotatable at a fulcrum position relative to each other. And the fulcrum position is preferably changeable.
In this way, by adjusting the connection position (fulcrum position) of the drive link and the driven link provided between the lower position and the support portion of the movable floor, the movement amount of the support portion of the movable floor is adjusted. Can do.

  Further, at least one of the drive link or the driven link is provided with an expansion / contraction portion configured to be extendable / contractable by screwing and rotating a female screw portion and a male screw portion, and according to expansion / contraction of the expansion / contraction portion. It is preferable that the length of the drive link or the driven link is adjusted. Thus, if the expansion-contraction part which consists of a thread part is provided, the length of a link member can be continuously adjusted with a simple structure.

In the lifting device of the present invention, the inclination angle of the movable floor can be made different between the lower position and the upper position. As a result, when installed on a fixed floor having a different inclination angle with respect to the step portion, it can be flush with the fixed floor surface at the upper position, and the effective area of the fixed floor surface can be reduced. Can be enlarged.
In addition, since the amount of movement of the support portion that supports the movable floor can be adjusted, the inclination angle and position of the movable floor at the upper position can be finely adjusted. Thereby, even if there is a dimensional error of the constituent members or a difference in the step shape, the floor surface can be made flush by eliminating the displacement between the movable floor and the fixed floor surface. Therefore, the appearance can be improved without causing a step between the fixed floor surface and the movable floor.
Further, the movable floor can be moved up and down by a link mechanism having a drive link and a driven link, and the length of the drive link and the driven link can be adjusted, or the fulcrum position connecting the drive link and the driven link can be changed. If it does in this way, the movement amount of the support part which supports a movable floor can be adjusted, without replacing a structural member.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. It should be noted that members, arrangements, and the like described below do not limit the present invention, and it goes without saying that various modifications can be made in accordance with the spirit of the present invention.
1 to 11 relate to an embodiment of the present invention. FIG. 1 is an explanatory diagram of an on-vehicle state of a vehicle floor lift device, and FIG. 2 is an electrical configuration of the vehicle floor lift device shown in FIG. FIG. 3 is a perspective view of a movable floor lifter, FIG. 4 is a perspective view of an operating mechanism of the movable floor lifter, FIG. 5 is an explanatory view of a connecting portion of a drive bar and a slide bar, and FIG. 6 is an operational explanatory view of the movable floor lifter. 7 is a partially enlarged view of the drive bar and the link guide. 8 is an explanatory view showing the configuration of the drive link rod, FIG. 9 is an explanatory view showing the configuration of the driven link rod, and FIGS. 10 and 11 are explanatory views showing adjustment of the floor development position.
FIGS. 12 to 19 relate to another embodiment of the present invention, FIGS. 12 to 14 are explanatory views showing the structure of a modified drive link rod, and FIG. 15 is an adjustment of the floor development position in the modified example. FIG. 16 is an explanatory view showing a modification of the length adjustment method, FIGS. 17 and 19 are explanatory views of the operation of the movable floor lifter according to another embodiment, and FIG. 18 is a crank mechanism and driving of the movable floor lifter of FIG. It is operation | movement explanatory drawing of a bar.

An embodiment in which the lifting device of the present invention is applied to a vehicle floor lift device will be described below. The vehicle floor lift apparatus S of this example is suitably mounted on, for example, a one-box car, a so-called minivan, or the like. As shown in FIG. 1, the vehicle 1 is provided with a recessed space 5 that forms a step 4 for getting on and off, which is a step surface that is stepped down to the entrance 3 of the vehicle floor 2. The entrance / exit 3 is opened and closed by a sliding door 6.
The vehicle floor lift device S of this example moves the movable floor 11 up and down in conjunction with the opening and closing operation of the door 6 in the recessed space 5 on the step 4 for getting on and off. The movable floor 11 can be moved up and down between a boarding / alighting position, which is a lower position near the boarding step 4, and a floor deployment position, which is an upper position substantially flush with the vehicle floor 2 near the vehicle floor 2.
The movable floor 11 of this example descends to the boarding / exiting position to facilitate getting on / off when the door is opened, and rises to the floor unfolding position to expand the effective area of the vehicle floor 2 when the door is closed. In FIG. 1, for easy understanding, the door 6 is open, but the movable floor 11 is raised to the floor deployment position.

In this example, the vehicle floor 2 is inclined forward by a predetermined angle (about 5 degrees in this example) in the vehicle traveling direction with respect to the ground surface. However, the boarding / alighting step 4 is formed substantially horizontally so as to be parallel to the ground surface. Therefore, the boarding / alighting step 4 and the vehicle floor 2 are not configured in parallel.
In the vehicle floor lift apparatus S of this example, the movable floor 11 is lifted and lowered so as to be substantially parallel to the step 4 and the ground surface for getting on and off, and to be substantially flush with the inclined vehicle floor 2 at the floor unfolding position. . In other words, in this example, the movable floor 11 is configured to rise while changing its posture so as to gradually tilt forward from a horizontally-on / off position that is held horizontally to a floor deployment position that is held in an inclined state.

  A schematic configuration of the vehicle floor lift device S is shown in FIG. As shown in FIG. 2, the vehicle floor lift device S of this example includes a movable floor lifter 10 that moves the movable floor 11 up and down by the drive motor 41, a central control unit 50 that controls the operation of the drive motor 41, and a central control unit. Main components are a power supply unit 52 that supplies power to the drive motor 41 based on a control signal from 50, and a door open / close detection unit 60 that detects the open / closed state of the door 6 and outputs a detection signal to the central control unit 50. It is said.

  As shown in FIG. 3, the movable floor lifter 10 is configured as a one-unit device that is detachable from the vehicle 1, and includes a movable floor 11 that is a plate-like member formed of a resin material or the like, The main components are a step cover 13 that can be disposed in the recessed space 5 of the mouth 3, an elevating means 20 that moves the movable floor 11 up and down, and a driving means 40 that drives the elevating means 20. 3A shows a state where the movable floor 11 is in the getting-on / off position, and FIG. 3B shows a state where the movable floor 11 is in the floor unfolded position.

  The step cover 13 of this example is integrally formed of a resin material so that it can be fitted and fitted into the recessed space 5, and is formed so as to cover a part of the vehicle floor 2 along the recessed space 5. Covers the upper surface portion 13a, the back surface portion 13c for covering the side wall of the vehicle surrounding the step 4 for getting on and off, side surface portions 13b and 13d for covering the front and rear sides of the step 4 for getting on and off, and the step 4 for getting on and off. It is comprised from the bottom face part 13e. The side surface portion 13b, the back surface portion 13c, and the side surface portion 13d are integrally formed so as to extend downward from the edge portion of the upper surface portion 13a. Further, the bottom surface portion 13e is integrally connected to the side surface portion 13b, the back surface portion 13c, and the side surface portion 13d. The movable floor 11 moves up and down on the bottom surface portion 13e.

FIG. 4 shows a perspective view of the lifting means 20 and the driving means 40.
The drive means 40 includes a drive motor 41, a speed reduction mechanism 42 that is integrally connected to the drive motor 41, and a crank mechanism 43 that is connected to an output shaft 42a of the speed reduction mechanism 42 that protrudes in the vertical direction. The crank mechanism 43 includes a crank arm 44 whose one end is fixed to the output shaft 42 a and a link 45 whose one end is rotatably connected to the other end of the crank arm 44. The other end of the link 45 is rotatably connected to the elevating means 20.
In the driving means 40 of the present example, the output shaft 42a rotates via the speed reduction mechanism 42 when the drive motor 41 rotates forward and backward according to the control signal from the central control unit 50, and accordingly, the crank arm 44 is configured to reciprocate within a predetermined rotation angle range.

  The elevating means 20 has a lower link guide 21 that is a long member fixed to the bottom surface portion 13e of the step cover 13 and a long guide guided along the longitudinal direction in a guide groove formed in the link guide 21. Slide bar 22, one end rotatably connected to the intermediate portion of drive links 23 A, 24 A, and 25 A and one end of drive links 23 A, 24 A, and 25 A attached to slide bar 22. Driven links 23B, 24B, and 25B that are rotatably connected to the link guide 21, and upper link guides 26 (see FIG. 6) in which the other ends of the drive links 23A, 24A, and 25A are rotatably connected; A drive bar 27 connected to the slide bar 22 so as to move along the longitudinal direction of the link guide 21 is a main component.

The drive links 23A, 24A, and 25A, and the driven links 23B, 24B, and 25B connected thereto, respectively, correspond to the lifting unit of the present invention.
Moreover, the slide bar 22 and the drive bar 27 interlock | cooperating with this correspond to the drive force transmission part of this invention.

The drive links 23A, 24A, 25A are attached to the slide bar 22 at substantially equal intervals in this order from the side close to the drive means 40. The slide bar 22 is formed with a pair of link attachment portions that are spaced apart at substantially equal intervals at three locations in the longitudinal direction so as to extend upward from the side ends.
The drive link 23 </ b> A is composed of a pair of drive link rods 33 </ b> A having the same operating length that are arranged in parallel with the slide bar 22 interposed therebetween, and a connecting rod that connects these end portions. The pair of drive link rods 33 </ b> A has their lower portions rotatably attached to the link attachment portions of the slide bar 22, and their upper portions are connected by a connecting rod. Similarly, the drive links 24A and 25A are configured such that the upper portions of a pair of drive link rods 34A and 35A having the same operating length are connected by connecting rods, and the lower portions are rotatably attached to the slide bar 22, respectively. Has been.
The drive link rods constituting the drive links 23A, 24A, and 25A have different lengths, and are set to be longer in the order of the drive link rods 33A, 34A, and 35A. In this example, the difference in operating length between the drive link rod 33A and the drive link rod 34A and the difference in operating length between the drive link rod 34A and the drive link rod 35A are set to substantially the same length.

On the other hand, the driven links 23B, 24B, and 25B are attached to the link guide 21 at substantially equal intervals in this order from the side close to the driving means 40. In the link guide 21, a pair of link attachment portions are formed at substantially equal intervals so as to extend upward from the side ends at three locations in the longitudinal direction.
These driven links 23B, 24B, and 25B are composed of a pair of driven link rods 33B, 34B, and 35B having the same operating length and arranged in parallel with the slide bar 22 in between. The driven link rods 33B, 34B, and 35B have the same operating length, and are set shorter than the drive link rod 33A in this example. These driven link rods are rotatably attached to the link attachment portion. The operating length means the length between fulcrums that are the connecting points of the link rods.

The link guide 21 slidably holds the slide bar 22 in a guide groove formed in the longitudinal direction (vehicle longitudinal direction). The link guide 21 extends toward the drive means 40, and the drive means 40 is attached to the extended portion. And it is attached to the bottom part 13e of the step cover 13 in the state assembled | attached with the drive means 40 integrally.
The end of the drive bar 27 on the drive means 40 side is rotatably connected to the link 45 of the drive means 40. When the drive motor 41 operates and the crank arm 44 reciprocates within a predetermined rotation angle range, the drive bar 27 is driven by the link 45 connected to the crank arm 44, and runs along the longitudinal direction of the link guide 21. It reciprocates on the slide bar 22.

As shown in FIG. 5, in this example, the drive bar 27 is provided with a long hole 27a along the longitudinal direction, and the slide bar 22 is provided with a fixing pin 22a so as to protrude upward. ing. The fixing pin 22a is inserted into the long hole 27a of the drive bar 27 and is loosely fitted.
FIG. 5A shows a state in which the fixing pin 22a is positioned at the right end of the long hole 27a. When the drive motor 41 starts to rotate in this state, the drive bar 27 is longer than the long hole 27a. The left end portion of the long hole 27a abuts on the fixing pin 22a when moved rightward by that amount. When the drive bar 27 further moves to the right in the longitudinal direction (deployment direction), the slide bar 22 is pushed rightward by the contact between the long hole 27a and the fixing pin 22a. As a result, the slide bar 22 starts moving in the right direction with a time lag behind the drive bar 27.

On the other hand, when the drive motor 41 rotates in the reverse direction from the state of FIG. 5B, the drive bar 27 moves to the left by the length of the long hole 27a, and then the slide bar 22 is moved to the left (storage direction) together with the drive bar 27. Start moving to. As described above, the slide bar 22 and the drive bar 27 are coupled so as to be movable in the longitudinal direction in conjunction with each other. However, the slide bar 22 moves in the same direction slightly later than the drive bar 27. It is configured.
In this example, the long hole 27a is formed in the drive bar 27. However, the present invention is not limited to this, and a long hole may be formed in the slide bar 22 and a fixing pin may be provided on the drive bar 27.

  As shown in FIG. 6, the movable floor 11 is attached to the upper surface of the link guide 26, and the link guide 26 supports the movable floor 11. In addition, elongated holes 26 a and 26 c are formed on the side surface of the link guide 26 along the longitudinal direction. The connecting rods of the drive links 23A and 25A are inserted into the long holes 26a and 26c, respectively, are slidable along the longitudinal direction in the long holes 26a and 26c, and are rotatable. On the other hand, the connecting rod of the drive link 24A is inserted in a support hole (not shown) formed in the link guide 26 and cannot move in the longitudinal direction, but can rotate in the support hole.

In this example, the end portions of the drive links 23A, 24A, and 25A are connected to a plurality of support portions that are separated in the longitudinal direction of the link guide 26, and the drive links 23A, 24A, and 25A are movable floors via the support portions. 11 is supported.
In this example, the long holes 26a and 26c are provided to attach the connecting rods of the drive links 23A and 25A. However, the present invention is not limited to this, and at least two of the drive links 23A, 24A and 25A are connected to the connecting rods. The long hole for attachment should just be formed.

As shown in FIG. 7, an inclined piece 26 d that is partially bent upward is formed on the lower surface of the link guide 26. The inclined piece 26d is formed by making a U-shaped cut along the longitudinal direction on the lower surface of the link guide 26 by press working and bending the portion upward. The inclined piece 26 d is bent so that the base side forms a predetermined inclination angle with respect to the lower surface of the link guide 26 to form an inclined surface (slope surface), and the end side is parallel to the lower surface of the link guide 26. Are parallel to each other. Thereby, an opening 26e is formed in the lower portion of the inclined piece 26d.
A predetermined gap is provided between the lower surface of the link guide 26 and the movable floor 11, and the inclined piece 26d is formed so as to protrude into this gap.

The drive bar 27 is also formed with similar inclined pieces 27b and openings 27c. However, the inclined piece 27b is formed narrower than the inclined piece 26d so that it can enter the opening 26e. The inclined piece 26d and the inclined piece 27b constitute a slope mechanism.
When the movable floor 11 is in the getting on / off position, the drive bar 27 is held closest to the drive means 40, and FIG. 7 shows this state. In this state, the inclined piece 27 b enters the opening 26 e of the link guide 26. That is, the upper end portion of the inclined piece 27 b is located above the lower surface of the link guide 26.
From this state, when the drive bar 27 moves in the direction away from the drive means 40 (deployment direction), the inclined surface (slope surface) of the inclined piece 27b comes into contact with the inclined surface of the inclined piece 26d of the link guide 26, and the inclined piece 27b. Tries to lift the link guide 26 slightly upward. The link guide 26 is lifted upward by the amount of play of the link member or the like by the force for lifting the link guide 26.

At this time, the fixing pin 22a of the slide bar 22 is not yet in contact with the end of the long hole 27a formed in the drive bar 27 on the drive means 40 side, and the slide bar 22 remains stationary.
In the getting-on / off position, the operating points and fulcrums of the drive links 23A, 24A, 25A and the driven links 23B, 24B, 25B are in a state of being aligned on a straight line. The point and fulcrum shift from the straight line. That is, at the getting-on / off position, the action points (connection points) at both ends of the drive links 23A, 24A, 25A, the action points (connection points) at both ends of the driven links 23B, 24B, 25B, and the drive links 23A, 24A, The fulcrums (connection points) of 25A and driven links 23B, 24B, and 25B are arranged in a straight line, but the link guide 26 is connected to the link guide 26 by the upward movement of the link guide 26. The point and the connection point of the driven links 23B, 24B, 25B with the drive links 23A, 24A, 25A are shifted upward from the other connection points.

  As a result, the connecting point of the drive links 23A, 24A, and 25A with the slide bar 22 is driven by the slide bar 22 moving in the direction away from the drive means 40 (deployment direction) in conjunction with the drive bar 27. The drive links 23A, 24A, 25A and the driven links 23B, 24B, 25B lift the link guide 26 upward from a state in which the drive links 23A, 24A, 25A and the driven links 23B, 25B are unstretched when trying to move away from the means 40. It becomes possible to bend.

Next, a characteristic configuration of this example will be described. In this example, the drive link rods 33A, 34A, 35A and the follower link rods 33B, 34B, 35B are configured to be adjustable in length.
FIG. 8 is an explanatory view showing the configuration of the drive link rod 33A (34A, 35A) of this example. As shown in this figure, the drive link rod 33A (34A, 35A) includes a long nut-like support 33a, rod ends 33b, 33c provided at both ends of the support 33a, and the support 33a and rod end 33c. And a nut 33d disposed on the surface. A connecting hole 36 for connecting the slide bar 22 and the link guide 26 is formed at each end of the rod ends 33b and 33c.

The rod end 33b on the side connected to the slide bar 22 is formed integrally with the column 33a. The rod end 33c on the side connected to the upper link guide 26 is connected to the support 33a so as to be able to advance and retract. In this example, the external thread part 31 is formed so that it may protrude from the edge part of the support | pillar 33a. An internal thread portion 32 is formed at the end of the rod end 33c. A nut 33d and a female screw portion 32 are screwed to the male screw portion 31 as shown in FIG. FIG. 8B shows a disassembled state in which the male screw portion 31 and the female screw portion 32 are not screwed together.
Further, a support hole 37 for rotatably connecting the end of the driven link rod is formed at a predetermined position (fulcrum position) of the intermediate portion of the column 33a. Accordingly, the drive link rod 33A (34A, 35A) can extend and contract the length of the portion closer to the rod end 33c than the support hole 37 by changing the length of the male screw portion 31 screwed into the female screw portion 32. . On the other hand, the length on the rod end 33b side with respect to the support hole 37 is constant.

  FIG. 9 is an explanatory diagram showing the configuration of the driven link rod 33B (34B, 35B) of this example. As shown in this figure, the driven link rod 33B (34B, 35B) includes a column 33e having male screw portions 31 formed at both ends, and rod ends 33c disposed at both ends of the column 33e. An internal thread portion 32 is formed at the end of the rod end 33c, and a nut 33d and an internal thread portion 32 are screwed to the external thread portion 31 as shown in FIG. FIG. 9A shows a state where the screw portions at both ends are screwed, and FIG. 9B shows a disassembled state where the screw portions are not screwed.

The external thread portion 31 and the internal thread portion 32 of the driven link rod 33B (34B, 35B) are formed such that the winding direction of the thread groove is reversed between the one end side and the other end side of the column 33e. For example, the thread groove is formed in the winding direction of the right screw on one end side of the support column 33e, and is formed in the winding direction of the left screw on the other end side of the support column 33e. By doing this, the rod end 33c is fixed and the column 33e is rotated about its axial direction, whereby the male screw portions 31 formed on one end side and the other end side of the column 33e are both female screw portions. Either the screw 32 is screwed into the inner side of the screw 32, or both of them are protruded to the outer side of the female screw part 32.
Thus, the length of the driven link rod 33B (34B, 35B) can be adjusted by a so-called turnbuckle method. Therefore, the length can be easily adjusted even after the connecting holes 36 at both ends are connected to the support hole 37 and the link guide 21, respectively. Further, since the length of the driven link rod can be continuously changed, the configuration is suitable for fine adjustment.

The driven link rod 33B (34B, 35B) may have a configuration in which the male screw portion 31 and the female screw portion 32 are provided one by one, similarly to the drive link rod 33A (34A, 35A).
In the above configuration, the nut 33d screwed to the support column side of the rod end 33c is moved to a position where it abuts the rod end 33c after adjusting the length to move the rod end 33c to a desired position. It will stop. Providing such a detent prevents the adjustment dimension from being shifted due to vibrations applied to the apparatus.

As described above, when the lengths of the drive link rod and the follower link rod can be adjusted, the movable floor position can be adjusted without replacing the constituent members of the lifting means 20. Hereinafter, an example will be described.
FIG. 10 is an explanatory diagram showing adjustment for changing the position and the inclination angle of the movable floor 11. Moreover, FIG. 11 is explanatory drawing which shows the adjustment which translates the movable floor 11 upwards. 10 and 11, when the lifting means 20 and the movable floor 11 are installed on the step cover 13, the movable floor 11 is located below the floor surface (dotted line) of the vehicle floor 2 at the floor development position. It is not. For example, such a dimensional error may occur due to stacking tolerances of components, or the shape of the step cover 13 may be changed in accordance with the step shape of the vehicle in order to mount the device S in a vehicle of a different vehicle type. When a situation occurs, the position can be adjusted so that the movable floor 11 is further raised or the inclination angle is changed at the floor development position.

For example, as shown in FIG. 10, by extending the lengths of the drive link rods 33A, 34A, and 35A, the ends of the drive links 23A, 24A, and 25A are raised in the upper right direction in FIG. Can be moved diagonally upward together with the link guide 26 in the upper right direction of FIG. In FIG. 10, the length is extended so that the difference between the lengths of the drive link rods 33A, 34A, and 35A becomes larger. As a result, the inclination angle of the movable floor 11 becomes larger and approaches the dotted line position.
Further, by extending the lengths of the driven link rods 33B, 34B, and 35B by substantially the same length, the drive links 23A, 24A, and 25A are rotated at substantially the same angle in the vertical rising direction. In this example, the operating lengths of the drive links 23A, 24A, and 25A are different. Therefore, if the rotation angles are the same, a difference occurs in the ascending dimensions of the tips of the drive links 23A, 24A, and 25A, and the inclination angle increases. . As a result, the movable floor 11 moves in the upper left direction, and the inclination angle of the movable floor 11 is increased to approach the dotted line position.

Further, as shown in FIG. 11, in order to raise the movable floor 11 in parallel, the lengths of the drive link rods 33A, 34A, and 35A are extended by substantially the same length. As a result, the end portions of the drive links 23A, 24A, and 25A rise substantially parallel to the upper right direction in FIG. 11, and the movable floor 11 can be translated parallel to the upper right direction in FIG. it can.
Further, in order to raise the movable floor 11 in parallel, the lengths of the driven link rods 33A, 34A, 35A are lengthened so that the difference in length becomes smaller, and the lengths of the driven link rods 33B, 34B, 35B are increased. The lengths may be extended with substantially the same length. In this way, the movable floor 11 moves in the upper right direction due to the extension of the drive link rod and the inclination angle of the movable floor 11 is reduced. Further, the inclination angle of the movable floor 11 is increased and the movable floor 11 is extended due to the extension of the driven link rod. 11 moves in the upper left direction. If the length adjustment amount of the drive link rod and the driven link rod is set so as to cancel the fluctuation of the inclination angle of the movable floor 11, the movable floor 11 can be raised in parallel.

In this manner, the drive link rods 33A, 34A, 35A and the follower link rods 33B, 34B, 35B can be lifted by a predetermined size, and the movable floor 11 can be raised while maintaining the parallel state.
Note that the movable floor 11 can be lowered to a desired position by adjusting the length so that the drive link rod and the driven link rod are contracted instead of being expanded.

As described above, according to the present invention, the lengths of the drive link rods 33A, 34A, and 35A and the driven link rods 33B, 34B, and 35B can be adjusted. The elevating means 20 can be adjusted to be flush with each other. Therefore, the appearance of the device is improved and the convenience of the passenger is improved. Further, such an adjustment can be performed even after the movable floor lifter 10 is installed in the step 4 for getting on and off. Moreover, even if it is a vehicle type from which a step shape differs, it can adjust so that the movable floor 11 may become flush with the vehicle floor 2, and the vehicle type deployment of an apparatus is attained.
Further, the drive link rods 33A, 34A, and 35A of the present invention can be adjusted in length by a fine dimensional unit of 1/2 of the screw pitch by the above configuration, and the driven link rods 33B, 34B, and 35B are continuously Since the length can be adjusted, it can be finely adjusted so as to appropriately correct the dimensional error in each part of the lifting means 20.

The central control unit 50 includes, for example, a CPU for performing various calculations, a ROM that stores a program for operating the CPU, and an RAM that temporarily stores information processed by the CPU. It consists of a circuit. The central control unit 50 is configured to output a power supply command signal (control signal) to the power supply unit 52 by detecting a detection signal from the door opening / closing detection unit 60. The central control unit 50 may be integrated into a central control device (not shown) provided in the vehicle 1 or may be attached to the step cover 13.
The power supply unit 52 is configured by a power supply device including a battery provided in the vehicle 1, and applies a predetermined voltage to the drive motor 41 of the movable floor lifter 10 in response to a power supply command signal from the central control unit 50. It is configured to be able to.

  The door opening / closing detection unit 60 detects opening / closing of the door 6 provided in the vehicle 1. When the door 6 is in a closed state, the door opening / closing detection unit 60 outputs a door closing signal to the central control unit 50, and the door 6 is opened. The door opening signal is configured to be output to the central control unit 50. The door opening / closing detection unit 60 may be a courtesy switch or a dedicated switch. Further, the door open / close detection unit 60 outputs a door close signal when the door 6 is completely closed, and outputs a door open signal when the door 6 moves slightly in the opening direction from the fully closed state. Alternatively, a door open signal may be output when the door 6 is fully open, and a door close signal may be output when the door 6 moves slightly in the closing direction from the fully open state. Good.

Next, the operation of the vehicle floor lift apparatus S having the above-described configurations will be described.
In the vehicle floor lift apparatus S of this example, the movable floor 11 operates so as to be interlocked with the opening / closing operation of the door 6 provided in the vehicle 1. That is, when the door 6 is open, the movable floor 11 is lowered to the boarding / alighting position and held at this position for easy boarding / alighting as shown in FIG. Then, in association with the closing operation of the door 6, in order to expand the effective area of the vehicle floor 2 as shown in FIG. 6B, the movable floor 11 is raised to the floor deployment position and held at this position. Then, when the door 6 is opened, it is displaced again to the state shown in FIG.
The movable floor 11 may be raised to the floor deployment position after a predetermined time after the door 6 is closed, and the movable floor 11 may be lowered to the getting-on / off position after the predetermined time after the door 6 is opened. Further, when the movable floor 11 moves up and down, a configuration may be used in which notification is given by a display (not shown) or a warning sound is emitted from a speaker.

In the vehicle floor lift apparatus S of the present example, when the door 6 is changed from the opened state to the closed state, a door closing signal is output from the door opening / closing detection unit 60 to the central control unit 50, and the central control unit 50 It is determined that 6 is closed.
When the central control unit 50 determines that the door is closed, the central control unit 50 outputs a predetermined power supply command signal to the power supply unit 52. When the power supply unit 52 detects the power supply command signal, it applies a voltage having a predetermined polarity to the drive motor 41 of the movable floor lifter 10. As a result, the drive motor 41 rotates in the forward direction, and the drive bar 27 is moved in the deployment direction via the crank mechanism 43.

As described above, the inclined piece 27b constituting the slope mechanism slightly lifts the link guide 26 and the movable floor 11 by the movement of the drive bar 27 in the unfolding direction, and the drive links 23A, 24A, 25A and the driven links 23B, 24B. , 25B is released. Subsequently, when the slide bar 22 starts to move in the unfolding direction by the drive bar 27, the drive links 23A, 24A, 25A and the driven links 23B, 24B, 25B operate so as to bend around the connection point.
When the slide bar 22 moves in the unfolding direction, the connection points of the drive links 23A, 24A, 25A and the slide bar 22 move in the unfolding direction (right direction) by the same distance (driving amount), thereby driving links 23A, 24A. , 25A connected to the driven links 23B, 24B, 25B rotate in the clockwise direction. Along with this, the drive links 23A, 24A, 25A are displaced to the standing state.

  At this time, even if it is displaced in the standing state in the same manner, the rising speed of the tip end portion varies depending on the operating length of the drive links 23A, 24A, 25A, so that the link guide 26 connected to the tip end portion is horizontal. It gradually tilts from the state. That is, in this example, since the drive link 25A is longer than the drive link 23A, a vertical stroke difference occurs, and the link guide 26 and the movable floor 11 tilt forward in the vehicle longitudinal direction. Note that due to the difference in operating length of the drive links 23A, 24A, and 25A, the distance between the tip portions of the drive links 23A, 24A, and 25A becomes shorter as the drive links 23A, 24A, and 25A rise. For this reason, the front end coupling portions of the drive links 23A and 25A slide in the elongated holes 26a and 26c.

When the central control unit 50 detects that the drive motor 41 has rotated a predetermined number of revolutions, the central control unit 50 stops the output of the power supply command signal and stops the drive motor 41. As the drive motor 41 rotates by a predetermined number of revolutions, the movable floor 11 rises to the floor deployment position. At this time, the movable floor 11 is inclined forward by substantially the same angle as the vehicle floor 2. In this floor development position, the movable floor 11 forms substantially the same plane that is continuous with the vehicle floor 2 and extends the effective area.
Note that the position detection sensor may detect that the movable floor 11 has reached the floor development position, and the operation of the drive motor 41 may be stopped.

When the door 6 is opened from the closed state, a door open signal is output from the door opening / closing detection unit 60 to the central control unit 50, and the central control unit 50 determines that the door 6 is opened.
When the central control unit 50 determines that the door is open, the central control unit 50 outputs a predetermined power supply command signal to the power supply unit 52 to apply a voltage having a predetermined polarity to the drive motor 41 of the movable floor lifter 10. As a result, the drive motor 41 rotates in the reverse direction and moves the drive bar 27 in the retracted direction (left direction) via the crank mechanism 43.

Due to the movement of the drive bar 27 in the retracted direction, the connection point between the drive links 23A, 24A, 25A and the slide bar 22 moves in the retracted direction, whereby the driven links 23B connected to the drive links 23A, 24A, 25A, 24B and 25B rotate counterclockwise. Accordingly, the drive links 23A, 24A, 25A are displaced so as to be linear with the driven links 23B, 24B, 25B. At this time, the link guide 26 and the movable floor 11 gradually return to the horizontal state.
In this example, when the central control unit 50 detects that the drive motor 41 has rotated by a predetermined number of revolutions, the central control unit 50 stops the output of the power supply command signal and stops the drive motor 41. As the drive motor 41 rotates by a predetermined number of revolutions, the link guide 26 and the movable floor 11 are lowered to the boarding / exiting position where they are completely horizontal.
Note that the position detection sensor may detect that the movable floor 11 has reached the getting-on / off position, and the operation of the drive motor 41 may be stopped.

As described above, the operating points (connection points) of the drive links 23A, 24A, and 25A and the driven links 23B, 24B, and 25B are aligned on a straight line at the getting-on / off position. By aligning in this manner, the movable floor lifter 10 of this example reduces the thickness of the lower portion of the movable floor 11 at the getting-on / off position, and keeps the height of the upper surface of the movable floor 11 low.
That is, the movable floor lifter 10 of this example is provided with a slope mechanism for releasing the parallel state of the action points on the straight line, and is provided on the drive bar 27 when the movable floor 11 is lifted from the getting-on / off position. By slightly lifting the link guide 26 supporting the movable floor 11 by the inclined piece 27b, the drive links 23A, 24A, 25A and the driven links 23B, 24B, 25B aligned in a straight line are slightly bent. Can be. As a result, the operating points arranged on the straight line are shifted, and the drive links 23A, 24A, 25A and the driven links 23B, 24B, 25B are bent without being stretched by the subsequent movement of the slide bar 22 in the developing direction. I can go.

The embodiment of the present invention can be modified as follows. In addition, the same code | symbol is attached | subjected to the component similar to the said embodiment, and the overlapping description is abbreviate | omitted.
(Modification example of drive link rod configuration)
FIG. 12 is a diagram showing a configuration of a modified drive link rod 133A (134A, 135A). In the modified example shown in FIG. 12, the length can be adjusted by a so-called turnbuckle method, like the driven link rod 33B (34B, 35B) shown in FIG.
In this modified example, a column 133a and a column 133b are provided instead of the column 33a in the configuration of FIG. One end of the column 133a is fixed to the rod end 33b on the slide bar 22 side in the same manner as the column 33a, and a female screw portion 32 is formed on the other end. Moreover, the support | pillar 133b is provided with the external thread part 31 at both ends similarly to the support | pillar 33e of FIG.
The support 133 is provided with a support hole 37 for rotatably connecting the end of the driven link rod to the support 133a. The distance between the connection hole 36 on the rod end 33b side and the support hole 37 is as follows. The drive link rods 33A, 34A, and 35A shown in FIG. 8 are the same.

  If comprised in this way, the length of the site | part of the rod end 33c side rather than the support hole 37 can be expanded-contracted like the drive link rod 33A (34A, 35A) of the said Example shown in FIG. On the other hand, the length on the rod end 33b side with respect to the support hole 37 can be configured to be constant. Then, by rotating the support pillar 133b in the axial direction, the length can be easily adjusted even after the connecting holes 36 of the rod ends 33b and 33c at both ends are connected to the support hole 37 and the link guide 21, respectively. It can be performed. Further, in the configuration of FIG. 8, the length is adjusted in units of one-half of the screw pitch, but in this example, the length can be continuously changed. Therefore, the configuration is suitable for fine adjustment.

  FIG. 13 is a diagram showing the configuration of a modified drive link rod 233A (234A, 235A). The modification shown in FIG. 13 uses a column 233b provided with a male screw portion 31 only at the end on the column 133a side instead of the column 133b of both male screws in the configuration of FIG. Moreover, it replaces with the rod end 33c, and the rod end 233c by which the other end part of the support | pillar 233b was prevented from coming off and connected rotatably was used. FIG. 13A shows a state in which the male screw portion 31 and the female screw portion 32 are screwed, and FIG. 13B shows a disassembled state in which the male screw portion 31 and the female screw portion 32 are not screwed. FIG. 13C is a cross-sectional view.

  If comprised in this way, the length of the site | part of the rod end 33c side rather than the support hole 37 can be expanded-contracted like the said each Example shown in FIG. 8, FIG. On the other hand, the length on the rod end 33b side with respect to the support hole 37 can be configured to be constant. Since the support column 233b is secured to the end of the rod end 233c and is rotatably assembled, the connection hole 36 of the rod ends 33b and 33c at both ends is rotated by rotating the support column 233b in the axial direction. Can be adjusted easily even after being connected to the support hole 37 and the link guide 21, respectively.

(Modification example that enables adjustment of fulcrum position)
FIG. 14 shows a modification in which the position of the support hole 37 provided on the drive link rod for connecting the driven link rod to the driven link rod can be adjusted, and thereby the fulcrum position of one end of the driven link rod can be adjusted. It is an example. FIG. 14 is an explanatory diagram showing the configuration of the drive link rod 333A (334A, 335A) of this example, and FIG. 15 is an explanatory diagram showing the position adjustment of the movable floor 11 by adjusting the fulcrum position.
As shown in FIG. 14A, the drive link rod 333A (334A, 335A) uses a column 333a provided with a plurality of support holes 337a, 337b, 337c instead of the column 33a in the configuration of FIG. Yes. The support hole 337b is provided at substantially the same position as the support hole 37, and the support holes 337a and 337c are provided at positions separated from the support hole 337b by a predetermined distance. Further, as shown in FIG. 14B, the length may be adjustable.

  As shown in FIG. 15, in this example, the connection position of the driven link rods 33B, 34B, and 35B can be changed from the support hole 337b, which is a normal support position, to the support hole 337a or the support hole 337c. For example, when the connection position is changed to the support hole 337c on the slide bar 22 side, the speed at which the drive link rod 333A (334A, 335A) is displaced in the standing state as the slide bar 22 moves in the deployment direction. Will be faster. Accordingly, the inclination of the movable floor 11 at the floor development position is increased. In this way, the position of the movable floor 11 can be adjusted by making it possible to adjust the fulcrum position instead of adjusting the length of the drive link rod or the driven link rod.

In each of the above-described configurations, the length is adjusted by screwing the male screw portion 31 and the female screw portion 32 so as to be able to advance and retreat. However, as shown in FIG. The length adjustment holes 38 may be provided at substantially the same pitch, and the length adjustment may be performed by aligning the length adjustment holes 38 to a desired length and inserting a pin member or the like through the length adjustment holes 38. Further, as shown in FIG. 16B, a protruding portion 39a protruding in the circumferential direction is provided on the support column 533a, and a long-hole-shaped guide groove 39b is provided on the rod end 533c, which is aligned and fixed at a desired length. The length may be adjusted by doing so.
Moreover, although each said structure was taken as the structure in which the movable floor 11 inclines in the floor deployment position, the structure which adjusts the length of a drive link rod or a follower link rod and adjustment of a fulcrum position is a floor deployment by the movable floor 11 Of course, the present invention can also be applied to a configuration that is horizontal in position.

  In the above embodiment, the link guide 26 and the movable floor 11 are moved up and down by the three sets of drive links 23A, 24A, and 25A and the driven links 23B, 24B, and 25B. Can be configured.

  In the above embodiment, the end portions of the drive links 23A, 24A, and 25A are connected to the slide bar 22, and the end portions of the driven links 23B, 24B, and 25B are connected to the link guide 21. The configuration is not limited thereto, and the end portions of the driven links 23B, 24B, and 25B may be connected to the slide bar 22 and the end portions of the drive links 23A, 24A, and 25A may be connected to the link guide 21.

In the above embodiment, the lengths of the drive links 23A, 24A, and 25A are set to be different from each other. However, the present invention is not limited to this, and the drive links 23A, 24A, and 25A may be configured using the same length as shown in FIG. Good. In the example of FIG. 17, the link guide 26 and the movable floor 11 are moved up and down by two drive links 123A and 124A and two driven links 123B and 124B connected thereto. The drive links 123A and 124A and the follower links 123B and 124B are adjustable in length or fulcrum positions as shown in the above embodiments, and the floor development of the movable floor 11 can be performed by adjusting the length or the fulcrum positions. The tilt angle and position at the position can be adjusted.
In this example, the drive links 123A and 124A and the follower links 123B and 124B have the same operating length, and these are connected from the end portions at the same length. The connecting rod of the drive link 123 </ b> A is supported in a long hole 126 a formed in the side surface of the link guide 26 so as to be movable and rotatable. On the other hand, the connecting rod of the drive link 124 </ b> A is rotatably supported by a support hole formed on the side surface of the link guide 26. Not limited to this, the connecting portion of the connecting rod of the drive link 124A may be a long hole, and the connecting portion of the connecting rod of the drive link 123A may be a support hole.

  In the movable floor lifter 10 of this example, the drive link 123A and the drive link 124A are rotatably connected to different slide bars 122a and 122b, respectively. The slide bars 122a and 122b can slide the link guide 21 independently. The slide bars 122a and 122b are connected to the drive bars 127a and 127b in which long holes (not shown) are formed by fixing pins, as in the above embodiment.

  As shown in FIG. 18, the drive bars 127a and 127b are rotatably connected to the links 45a and 45b, respectively. Each of the links 45a and 45b is rotatably connected to a crank arm 44 fixed to the output shaft 42a. The link 45a is attached closer to the output shaft 42a than the link 45b.

With this configuration, when the drive motor 41 rotates in the forward direction and the crank arm 44 rotates, as shown in FIG. 18B, the drive connected to the link 45a attached to the side closer to the output shaft 42a. The drive bar 127b connected to the link 45b attached to the far side than the bar 127a has a larger moving distance (drive amount) in the unfolding direction.
If the movement distance is the same, the rising amounts (strokes) of the distal ends of the drive link 123A and the drive link 124A are substantially the same, but the movement distance in the deployment direction is set to be different. The drive link 124A is displaced to the standing posture earlier than the drive link 124A. Along with this, the tip end portion of the drive link 124A becomes larger in the amount of increase (stroke) than the tip end portion (connecting rod side) of the drive link 123A, and the link guide 26 and the movable floor 11 tilt forward.

  At the floor development position, the inclination angle of the movable floor 11 is the same as the forward inclination angle of the vehicle floor 2, and the movable floor 11 and the vehicle floor 2 can be made substantially flush. In this way, by using the same drive link and driven link as a plurality, it is possible to share parts and reduce manufacturing costs.

In the above embodiment, the end portion of the driven link is rotatably connected to the intermediate portion of the drive link, and is not connected to the link guide 26. However, the present invention is not limited to this. A so-called X-arm system may be used.
In the example shown in FIG. 19, the drive link 223A and the driven link 223B are rotatably connected. Both end portions of the drive link 223A are rotatably connected to the link mounting portion of the slide bar 22 and the support hole of the link guide 26, respectively. On the other hand, both end portions of the driven link 223B are rotatably attached to the link attaching portion of the link guide 21 and the long hole 226a of the link guide 26, respectively. The drive link 223A and the driven link 223B correspond to the support portion of the present invention.

The drive link 223A and the driven link 223B are connected to each other at a fulcrum 201 so as to be rotatable. In this example, the operation length from the fulcrum 201 of the drive link 223A to the connection point with the link guide 26 is set longer than the operation length from the fulcrum 201 of the driven link 223B to the connection point of the link guide 26. Yes. Each link rod constituting the drive link 223A and the driven link 223B can be adjusted in length as shown in the above embodiments. Further, the position of the fulcrum 201 can be adjusted.
With such a configuration, the link guide 26 and the movable floor 11 are in a horizontal state when the drive link 223A and the driven link 223B are aligned in a straight line at the getting on / off position, but in a state of being inclined forward at the floor unfolded position. Retained. Then, the forward tilt posture of the movable floor 11 at the floor development position and fine adjustment of the position can be performed by adjusting the length of each link rod constituting the drive link 223A and the driven link 223B or adjusting the position of the fulcrum 201.

In addition, in this example, it is the structure which supports the link guide 26 and the movable floor 11 by X arm which consists of 1 set of drive links 223A and driven link 223B, However, Not only this but the structure which consists of multiple sets of X arms It may be.
In addition, the drive link 223A and the driven link 223B in this example are different in length, but the length is not limited to this, and the operation length from the fulcrum 201 of the drive link 223A to the connection point with the link guide 26 is not limited thereto. However, the position of the fulcrum 201 may be set to be longer than the operating length from the fulcrum 201 of the driven link 223B to the connection point of the link guide 26.

In the above embodiment, the drive means 40 is configured to operate the elevating means 20 by sliding the drive bar 27 and the slide bar 22 in the longitudinal direction by the crank mechanism 43. However, the present invention is not limited to this. Is not something For example, instead of using the crank mechanism 43, a configuration in which a pinion gear is provided on the output shaft 42 a and a rack that meshes with the pinion gear may be connected to the drive bar 27.
Further, as long as the drive bar 27 and the slide bar 22 can be slid in the longitudinal direction, a known configuration such as a ball screw, a cylinder, a wire, a rotating belt, and other link mechanisms may be applied as the drive means 40.

  In the above embodiment, the crank mechanism 43 is connected to the slide bar 22 via the drive bar 27. However, the present invention is not limited to this, and the crank mechanism 43 and the slide bar 22 can be rotated without providing the drive bar 27. It may be configured to be directly connected to. In this case, the position just before the action points of the drive link and the driven link are arranged in a straight line may be set as the getting on / off position.

  In the above embodiment, the vehicle floor lift device S according to an embodiment of the present invention has been described as being suitably mounted on a one-box car, a so-called minivan, or the like, but the present invention is not limited to this. Instead, they may be mounted on buses, trucks, welfare vehicles, cab-over vehicles, and the like. Also, the mounting position of the vehicle floor lift device S is not limited to the rear seat, and may be a driver seat or a passenger seat as long as it is mounted on a stepped portion having a step. . Moreover, you may arrange | position at an emergency exit port. Also, the door opening / closing type is not limited to the sliding type.

It is explanatory drawing of the vehicle-mounted state of the floor lift apparatus for vehicles which concerns on one Embodiment of this invention. It is a block diagram of the floor lift apparatus for vehicles shown in FIG. It is a perspective view of a movable floor lifter. It is a perspective view of the action | operation mechanism of a movable floor lifter. It is explanatory drawing of the connection part of a drive bar and a slide bar. It is operation | movement explanatory drawing of a movable floor lifter. It is the elements on larger scale of a drive bar and a link guide. It is explanatory drawing which shows the structure of the drive link rod of this invention. It is explanatory drawing which shows the structure of the driven link rod of this invention. It is explanatory drawing which shows adjustment of the floor expansion | deployment position in this invention. It is explanatory drawing which shows adjustment of the floor expansion | deployment position in this invention. It is explanatory drawing which shows the structure of the drive link rod of a modification. It is explanatory drawing which shows the structure of the drive link rod of a modification. It is explanatory drawing which shows the structure of the drive link rod of a modification. It is explanatory drawing which shows adjustment of the floor development position in a modification. It is explanatory drawing which shows the length adjustment method of the modification. It is operation | movement explanatory drawing of the movable floor lifter which concerns on other embodiment. FIG. 18 is an operation explanatory diagram of a crank mechanism and a drive bar of the movable floor lifter of FIG. 17. It is operation | movement explanatory drawing of the movable floor lifter which concerns on other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Vehicle, 2 ... Vehicle floor, 3 ... Entrance / exit, 4 ... Step for getting on / off, 5 ... Recessed space 6 ... Door, 10 ... Movable floor lifter, 11 ... Movable floor, 13 ... Step cover 20 ... Lifting means, 21 ... ( Lower part) Link guide, 22 Slide bar 22a Fixed pin, 23A, 24A, 25A Drive link 23B, 24B, 25B Followed link, 26 Upper part link guide 26d Inclined piece 27 Drive bar 27a Long hole, 27b · Inclined piece 31 · Male thread portion, 32 · Female thread portion 33A, 34A, 35A · Drive link rod 33B, 34B, 35B · Drive link rod 33a · Strut, 33b and 33c · Rod end, 33d · Nut, 33e ··· Column 36 · Connecting hole · 37 · Support hole · 38 · Length adjusting hole · 39a · Projection portion · 39b · Guide groove 40 · Drive means 41 · Drive motor 42 ‥ reduction mechanism, 42a ‥ output shaft, 43 ‥ crank mechanism 44 ‥ crank arm, 45, 45a, 45b ‥ link 50 ‥ central control unit, 52 ‥ power supply unit, 60 ‥ door detection unit,
122a, 122b ... slide bars 123A, 124A ... drive link, 123B, 124B ... driven link 126a ... long hole, 127a, 127b ... drive bar, 201 ... fulcrum 223A ... drive link, 223B ... follower links 133A, 134A, 135A, 233A , 234A, 235A, 333A,
334A, 335A, drive link rods 133a, 133b, 233b, 433a, 533a, columns 233c, 433c, 533c, rod end S, device (vehicle floor lift device)

Claims (7)

An elevating device comprising a movable floor, elevating means for elevating and lowering the movable floor between an upper position and a lower position, and a driving means for driving the elevating means,
The elevating means transmits a plurality of elevating parts that respectively support a plurality of spaced apart parts of the movable floor, and a driving force by the driving means to the plurality of elevating parts, thereby transmitting the plurality of elevating parts to a predetermined driving amount. A driving force transmission unit that only drives,
The plurality of elevating parts move the support part of the movable floor up and down by a predetermined movement amount when driven by the drive force transmission part by a predetermined drive amount, and the movement amount of the support part of the movable floor The lifting device is configured to be adjustable, and is configured to be able to adjust the position and inclination angle of the movable floor at the upper position. The elevating part includes a drive link having one end connected to the driving force transmitting part, and a driven link having one end rotatably attached to the step for getting on and off.
One of the drive link or the driven link has the other end rotatably connected to the support portion of the movable floor, and the other end is rotatably connected to the intermediate portion.
The lifting device according to claim 1, wherein the length of at least one of the driving link and the driven link is adjustable. The elevating unit includes a drive link having one end connected to the drive force transmitting unit, and a driven link having one end rotatably attached near the lower position,
One end of the drive link or the driven link is pivotally connected to the support portion of the movable floor, and the other end is pivotable to a fulcrum position provided at an intermediate portion. Concatenated,
The lifting device according to claim 1, wherein the fulcrum position is changeable. An elevating device comprising a movable floor, elevating means for elevating and lowering the movable floor between an upper position and a lower position, and a driving means for driving the elevating means,
The elevating means has an elevating part having a plurality of support parts that respectively support a plurality of spaced apart parts of the movable floor, and a driving force transmitting part for transmitting a driving force by the driving means to the elevating part. ,
The elevating part is configured to move the plurality of support parts up and down by a predetermined movement amount when driven by the driving force transmission unit, and to adjust the movement amounts of the plurality of support parts, A lifting device characterized in that the position and inclination angle of the movable floor in the upper position can be adjusted. The plurality of support portions have one end connected to the driving force transmission portion and the other end rotatably connected to the support portion of the movable floor, and one end rotatable near the lower position. A follower link attached to the other end of the movable floor so as to be rotatable with respect to the support portion of the movable floor,
The intermediate portions of the drive link and the driven link are connected to each other so as to be rotatable at a fulcrum position, and the length of at least one of the drive link or the driven link is adjustable. The elevating device according to claim 4. The plurality of support portions have one end connected to the driving force transmission portion and the other end rotatably connected to the support portion of the movable floor, and one end rotatable near the lower position. A follower link attached to the other end of the movable floor so as to be rotatable with respect to the support portion of the movable floor,
5. The lifting device according to claim 4, wherein intermediate portions of the drive link and the driven link are rotatably connected to each other at a fulcrum position, and the fulcrum position is changeable.   At least one of the drive link or the driven link is provided with an expansion / contraction portion configured to be extendable / contractable by screwing and rotating a female screw portion and a male screw portion, and according to the expansion / contraction of the expansion / contraction portion, The elevating device according to claim 2 or 5, wherein a length of the drive link or the driven link is adjusted.

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