JP3828709B2 - Deck lifting and lowering storage device in vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a deck lifting and lowering storage device in a vehicle, in particular, a base fixed to one side of a vehicle body, and a predetermined lowering position and a rising position in the same posture supported by the base via a lifting guide mechanism. An elevating support frame capable of elevating, an elevating drive device for elevating and lowering the elevating support frame, and an overhanging position provided on the elevating support frame and projecting outward from the support frame when it is in the raised position A deck that can move horizontally between the retracted storage position and the lifting support frame can be loaded and unloaded between the deck in the extended position and the ground when the lifting support frame is in the lowered position. It is related with the deck raising / lowering storage apparatus.
[0002]
[Prior art]
  Conventionally, in the above-described deck lifting and retracting device that is mounted on a vehicle such as a bus and used for loading and unloading a wheelchair or the like, when the lifting support frame is in the raised position, the deck is placed between the extended position and the retracted position. It is equipped with a horizontal drive device for forcibly moving horizontally (see, for example, Japanese Patent No. 2982153), and when storing the deck, after raising the lifting support frame together with the deck in the extended position to the raised position, A horizontal drive device horizontally moves the deck to a storage position on the inner side of the vehicle body.
[0003]
[Problems to be solved by the invention]
  However, in the conventional device, components such as the motor, rack and pinion of the horizontal driving device are attached to any one of the lifting guide mechanism, the lifting support frame, and the deck. It is necessary to drive the lifting support frame and deck up and down with a large driving force while bearing the total weight of these horizontal driving devices, and it is necessary to increase the capacity of the lifting drive device, and power is also consumed unnecessarily. There was a problem that the cost increased.
[0004]
  Furthermore, in the conventional apparatus, since a part of the horizontal driving device (rack or the like) is extended over the side of the deck, it is difficult to get on and off from the side of the deck.
[0005]
  The present invention has been made in view of such circumstances, and an object thereof is to provide a deck lifting and lowering storage device in a vehicle that can solve the above-described problems of conventional devices.
[0006]
[Means for Solving the Problems]
  In order to achieve the above object, the invention according to claim 1 is the same as the base fixed to one side of the vehicle body, and the predetermined lowering position and the rising position are supported by the base via the lifting guide mechanism. An elevating support frame capable of elevating in a posture, an elevating drive device for elevating and driving the elevating support frame, and an overhang position provided on the elevating support frame and projecting outward from the support frame when it is in the raised position; It is equipped with a deck that can move horizontally between the retracted position retracted to the inside of the vehicle body, and when the lifting support frame is in the lowered position, it is possible to load and unload the transported object between the deck in the extended position and the ground In the deck lifting and lowering storage device in the vehicle,The first locking mechanism that locks the deck in the overhanging position to the lifting support frame is mechanically interlocked with the first locking mechanism locked to the highest position in the lifting and lowering process of the lifting support frame. Provided between the deck and the lifting support frame so that the first locking mechanism is re-locked mechanically in conjunction with the release and the lifting support frame starts to descend from the raised position;A horizontal drive device that can be engaged with and disengaged from the deck in the extended position when the elevating support frame is in the raised position and can apply the driving force for the horizontal movement to the deck;And placed below the floor of the car bodyIt is supported on the vehicle body independently of the lifting support frame and lifting guide mechanism.An engaged member for engaging and disengaging the horizontal driving device is provided at the end of the deck on the vehicle body side, and the lifting support frame is in the raised position and the deck extends between the horizontal driving device and the deck. A second lock that releases the deck from the horizontal drive when in the position and locks the deck to the horizontal drive mechanically in conjunction with the horizontal drive starting to drive the deck to the retracted position from the released state. Provided a mechanismWith featuresTo do.
[0007]
  the aboveAccording to the feature, the weight of the horizontal drive device can be directly borne on the vehicle body without using the lift support frame and the lift guide mechanism, and the lift load of the lift drive device is reduced accordingly.. AlsoEven if the horizontal driving device supported on the vehicle body as described above is detached from the deck when the deck is moved up and down,Since the deck in the overhanging position can be locked to the lifting support frame by the first locking mechanism during the lifting process of the lifting support frame,During the raising / lowering operation, the first locking mechanism reliably prevents the deck from moving loosely from the raising / lowering support frame.In addition, the first locking mechanism is automatically unlocked in conjunction with the raising and lowering support frame rising up to the raised position together with the deck, and automatically in conjunction with the raising and lowering support frame starting to descend from the raised position. Therefore, it is not necessary to lock or unlock the first lock mechanism every time the lifting support frame is lifted or lowered, so that the operation is simple and there is no worry of forgetting to lock. The second locking mechanism provided between the horizontal drive and the deck is designed to draw the deck in the extended position into the retracted position on the inner side of the vehicle body in a state where the lifting support frame is raised to the raised position together with the deck. The deck is automatically locked to the horizontal drive device in conjunction with the start of the operation of the horizontal drive device, and the deck is moved from the horizontal drive device in conjunction with pushing the deck to the extended position by the horizontal drive device. Since the lock is automatically released, each time the deck moves horizontally, it is not necessary to lock or unlock the horizontal drive device on the deck. FurtherThe horizontal drive device is disposed below the floor of the vehicle body, and an engaged member for engaging and disengaging the horizontal drive device is provided at the end of the deck on the vehicle body side.So deThe mechanism for horizontally driving the stick should not overhang on the deck.KudariIt is possible to easily get on / off or unload the transported object from the three sides of the deck without being obstructed by the mechanism.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
  Embodiments of the present invention will be specifically described below based on the embodiments of the present invention illustrated in the accompanying drawings.
[0009]
  In the accompanying drawings, FIGS. 1 to 12 show an embodiment of the present invention. FIG. 1 is a cross-sectional view of the main part of a bus equipped with the deck lifting apparatus of the present invention, and FIG. 3 is a partially cutaway enlarged side view showing the slide support portion of the deck (an enlarged sectional view taken along the arrow 4 in FIG. 1), and FIG. FIG. 6 is an enlarged sectional view taken along line -5, FIG. 6 is an enlarged sectional view taken along line 6-6 of FIG. 2, and (a) shows a locked state and (b) shows an unlocked state. 7 is a cross-sectional view taken along line 7-7 in FIG. 6, FIG. 8 is a view corresponding to FIG. 1 when the lifting support frame is in the raised position, FIG. 9 is an enlarged plan view taken along arrow 9 in FIG. 9 is a cross-sectional view taken along line 10-10, FIG. 11 is an enlarged cross-sectional view taken along line 11-11 of FIG. 9, and FIG. 12 is an explanatory plan view showing a horizontal movement mode of the deck. ) Indicates the middle of pressing, and (c) indicates the position immediately before the end of pressing.
[0010]
  First, in FIGS. 1-3, the entrance / exit O is opened in the side surface of the vehicle body B of the bus | bath as a vehicle, The entrance / exit O can be opened and closed arbitrarily by the opening-and-closing door which is not shown provided in the side part of the vehicle body B. is there. Corresponding to this entrance / exit O, on the side of the vehicle body B, there is a substantially horizontal deck 3 used for getting on and off the wheelchair W and other transported objects, and a deck lifting / lowering storage device A that lifts and horizontally drives the deck 3. And are installed. The deck 3 is formed in a rectangular flat plate shape, and a flat upper surface thereof serves as a placement surface of the transported body.
[0011]
  Next, the structure of the deck lifting / lowering storage device A will be specifically described with reference to FIGS. The device A is supported by a base 1 fixed to one side of a vehicle body B, and a parallel link mechanism G as a lift guide mechanism, and is supported by the base 1 at a predetermined lowered position 2D (solid line in FIG. 1). And an elevating support frame 2 capable of elevating and lowering between the raised positions 2U (the chain line in FIG. 1 and the solid line in FIG. 8) in the same posture, and an elevating drive device Dv that drives the elevating support frame 2 up and down. The lifting support frame 2 has an extended position 3F (solid line in FIGS. 1 and 8) where the deck 3 protrudes outward from the support frame 2 when it is in the raised position 2U and a retracted position retracted inward of the vehicle body. It is provided so that it can move horizontally between 3Rs (FIG. 1, FIG. 10 chain line). As can be seen from the solid line in FIG. 1, the wheelchair W can be unloaded at any time between the deck 3 at the extended position 3F and the ground E when the lifting support frame 2 is in the lowered position 2D.
[0012]
  The elevating support frame 2 is formed in a U-shape by a pair of front and rear standing frame portions 2a extending vertically and an intermediate frame portion 2b extending horizontally so as to integrally join lower ends of the standing frame portions 2a. .
[0013]
  A stepped attachment surface Os that forms a lower opening edge of the entrance / exit O is formed on a side inner wall of the vehicle body B so as to be lowered from a front end of a deck support surface 11 described later. A pair of the bases 1 are fixed to both sides of the upper step portion of the mounting surface Os. A base end of a pair of upper and lower links 4u, 4l is pivotally connected to each base 1 so as to be rotatable up and down, and a pair of upright support frames 2 is raised at the distal ends of both links 4u, 4l. The frame portions 2a are pivotally coupled so as to be pivotable up and down, and the parallel link mechanism G is constituted by the links 4u and 4l and the lifting support frame 2.
[0014]
  Between the base 1 and the elevating support frame 2 (or one of the links 4u, 4l), both ends of an extendable hydraulic cylinder constituting the elevating drive device Dv are pivotally connected respectively. When the hydraulic cylinder is extended, the lifting support frame 2 is raised, and when the hydraulic cylinder is contracted, the lifting support frame 2 is lowered.
[0015]
  On the upper surface of the deck 3, a handrail S for the rider of the wheelchair W to hold is erected at the left and right corners on the front side. A front and lower inclined guiding surface 3f is provided on the upper surface of the front end of the deck 3, and an elastic body 3c capable of abutting against the ground E is provided on the lower surface of the front end. Further, there is a slight difference in level between the upper surface of the deck 3 and the ground E when the elevating support frame 2 is in the lowered position 2D. Therefore, on the front end edge and the left and right side edges of the deck 3, there is a step board P that obliquely connects the upper surface of the deck 3 and the ground E at the use position. It is provided so as to be selectively movable between positions. In addition, since the mechanism which hold | maintains each step board P at any time in a standing position is well-known conventionally, illustration and description are abbreviate | omitted.
[0016]
  The deck 3 is supported by the elevating support frame 2 so as to be horizontally movable by a slide support mechanism Gs provided between the deck 3 and the elevating support frame 2. In other words, guide grooves 3a that are open to the outside of the deck 3 and extend in the longitudinal direction of the deck 3 are formed at both ends of the deck 3, respectively. A plurality of rollers 5 are rotatably supported on the inner surface of the lower portion of the frame portion 2a at intervals in the longitudinal direction of the groove 3a, and these rollers 5 are respectively fitted to the guide grooves 3a so as to be capable of rolling. The horizontal movement of the deck 3 is guided.
[0017]
  The end of the guide groove 3a near the vehicle body B is closed by a first stopper wall 3ei, and the movement limit to the outside of the deck 3 is defined by the inner roller 5 coming into contact with the first stopper wall 3ei. That is, it is restricted that the deck 3 moves forward further than the overhanging position 3F and comes off the lifting support frame 2. Further, the end of the guide groove 3a on the side farther from the vehicle body B is closed by a second stopper wall 3eo, and when the outer roller 5 comes into contact with the second stopper wall 3eo, the movement limit to the inside of the deck 3 is limited. In other words, the deck 3 is restricted from moving back further inward than the storage position 3R.
[0018]
  Between the elevating support frame 2 and the deck 3, a first lock mechanism L1 for locking the deck 3 at the extended position 3F to the support frame 2 at least during the elevating operation of the elevating support frame 2 is provided.
[0019]
  In the illustrated example, the first lock mechanism L1 locks so as to restrict the horizontal movement of the deck 3 at the extended position 3F inward of the vehicle body relative to the lifting support frame 2. The deck 3 at the extended position 3F is locked to the lifting support frame 2 in cooperation with the first stopper wall 3ei and the roller 5 for restricting horizontal movement in the extending direction. Then, as the lifting support frame 2 rises to the raised position 2U, it is mechanically interlocked to release the lock (that is, allowing the deck 3 to move inward of the vehicle body relative to the lifting support frame 2).
[0020]
  Thus, in the illustrated example, the first lock mechanism L1 is an engagement step portion 3s as an engaged portion provided on the lower surface of the deck 3, and the engagement step portion 3s is engaged with the engagement step portion 3s so that the deck 3 is inward of the vehicle body. Elevating support frame so that it can move between a lock position 6L (see FIG. 6 (a)) for restricting the movement to an unlock position 6UL (see FIG. 6 (b)) for releasing its locking. A lock member 6 pivotally connected 6p to 2; a lock spring 7 for urging the lock member 6 to a lock position 6L; and a part (front portion 8a) of the lifting support frame 2 from its outer surface. And a sensing member 8 which is provided so as to protrude and is pushed by the vehicle body B to forcibly move the lock member 6 to the unlock position 6UL against the lock spring 7 when the lifting support frame 2 is raised to the raised position 2U.
[0021]
  The sensing member 8 extends so as to cross the hollow intermediate frame portion 2b of the lifting support frame 2, and both end portions thereof are slidably supported by both side end walls of the intermediate frame portion 2b. An enormous portion composed of a pair of side plates 8s that are parallel to each other is formed in the middle portion of the sensing member 8, and a connecting pin 9 is horizontally connected between the side plates 8s. The front end 8a of the sensing member 8 passes through the side wall on the vehicle body side of the intermediate frame 2b and extends outward. The sensing member 8 is interposed between the enormous portion and the intermediate frame 2b. The lock spring 7 is interposed in a compressed state so as to be biased toward the vehicle body.
[0022]
  Further, the lock member 6 is formed in a bowl shape in which a tip portion 6a is bent upward, and most of the base side is received in a space between both side plates 8s. The front portion 6a protrudes above the intermediate frame portion 2b through the opening 2bh on the upper wall of the intermediate frame portion 2b when the lock member 6 is in the lock position U. The base end portion of the lock member 6 is pivotally connected to the bracket 2bb projecting from the inner wall of the intermediate frame portion 2b so as to be pivotable, and the intermediate portion of the lock member 6 is slid onto the connection pin 9. An inclined long hole 6h that fits in a movable manner is formed.
[0023]
  Thus, the sensing member 8 biased toward the vehicle body by the lock spring 7 can normally hold the lock member 6 in the lock position U by engaging the connecting pin 9 with the lower end of the long hole 6h. Thus, the tip portion 6a of the lock member 6 is engaged with the engagement step portion 3s of the deck 3 to restrict the movement of the deck 3 toward the vehicle body inward side. When the elevating support frame 2 rises to the raised position 2U from such a state, the sensing member 8 has its tip 8a pushed against the upright wall portion Osv of the stepped mounting surface Os of the vehicle body B against the lock spring 7. Since the connecting pin 9 slides relative to the other end side in the long hole 6h in accordance with the retreating operation, the pin 9 and the long hole 6h are accompanied by the cam action between the pin 9 and the lock. The member 6 can be rotated downward to the unlock position 6UL, and thus the tip portion 6a of the lock member 6 can be detached from the engagement step portion 3s of the deck 3, so Movement to the side is allowed.
[0024]
  A cutout fa that is slightly shorter than the deck 3 is formed on the floor surface f of the vehicle body B so as to correspond to the entrance / exit O, and the periphery of the cutout fa is between the deck 3 and the floor surface f. A slope 10 for smoothly moving the wheelchair W is provided. In the vehicle body B directly below the notch fa, a deck support surface 11 lower than the floor surface f is formed continuously to the upper edge of the upright wall portion Osv of the stepped attachment surface Os. The deck support surface 11 is formed with a plurality of openings 11a spaced apart from each other. The openings 11a can smoothly guide the lower surface of the deck 3 moving horizontally between the overhanging position 3F and the storage position 3R. The upper portions of a plurality of guide rollers 12 pivotally supported on the vehicle body B are respectively exposed. A gap 20 through which the rear end of the deck 3 can enter is formed between the deck support surface 11 and the floor board.
[0025]
  A box-shaped engaged member 3b having an open side is fixed to the rear end of the deck 3, and the deck 3 is moved horizontally on the deck support surface 11 so as to avoid the engaged member 3b. A groove 11b is formed along the direction.
[0026]
  Below the floor surface f and the deck support surface 11, the vehicle body B has a horizontal drive device Dh for applying a horizontal drive force to the deck 3 when the lift support frame 2 is in the raised position 2U. It is provided independently from the elevation guide mechanism G. Between the horizontal driving device Dh and the deck 3, the deck 3 is released from the horizontal driving device Dh when the elevating support frame 2 is in the raised position 2U and the deck 3 is in the extended position 3F, and the released state A second locking mechanism L2 for mechanically interlocking the horizontal driving device Dh to start driving the deck 3 to the storage position 3R side and locking the deck 3 to the horizontal driving device Dh is provided.
[0027]
  The horizontal driving device Dh is fixed to the vehicle body B so that the screw rod sl extending along the groove 11b, a plurality of bearing members 13 that rotatably support the screw rod sl on the vehicle body B, and the screw rod sl are driven to rotate. And a movable body 15 integrally having a block 15a that is screwed into an intermediate portion of the screw rod sl and moves forward and backward in conjunction with the rotation of the screw rod sl. The movable body 15 pivotally supports a roller 15r that fits on a guide rail 11g provided directly below the deck support surface 11 on both sides of the groove 11b, and the roller 15r rolls on the guide rail 11g. Thereby, the movement of the movable body 15 along the screw rod sl is guided and the rotation around the screw rod sl is prevented.
[0028]
  The second lock mechanism L2 is a hook that is pivotally supported by the movable body 15 and is pivotable between a lock position 16L that can be locked to the engaged member 3b and an unlock position 16UL that cannot be locked. And a lock spring 17 that biases the lock member 16 to the lock position 16L. A cam pin 16a is fixed to one side of the lock member 16, and this cam pin 16a is fixed so as to face the groove 11g of the deck support surface 11 when the deck 3 advances to the vicinity of the protruding position 3F. By engaging the slidably engaged with the inclined surface 19s of the stopper cam 19, the lock member 16 can be gradually forced to the unlock position 16UL side as the movable body 15 further advances. The movable body 15 is fixed with a stopper wall 15s for engaging the outer surface of the engaged member 3b and pushing the deck 3 toward the extended position 3F when the movable body 15 moves forward.
[0029]
  Next, the operation of the embodiment will be described. When the bus is stopped, the elevating support frame 2 is lowered to the lowered position 2D, the deck 3 at the extended position 3F is lowered to the ground E, and the step board P on the side to enter is laid down to the ground E. As shown in FIG. 1, it is possible to get on and off the wheelchair W on the deck 3. At this time, the first lock mechanism L1 is in the lock operation state shown in FIG. 6A, and cooperates with the first stopper wall 3ei and the roller 5 for restricting the horizontal movement of the deck 3 in the extending direction. Thus, the deck 3 at the extended position 3F is locked to the lifting support frame 2.
[0030]
  In this state, after the wheelchair W gets on the deck 3, when the hydraulic cylinder as the lifting drive unit Dv is extended, the lifting support frame 2 can be lifted in the same posture. Along with this rise, the deck 3 at the overhanging position 3F can also rise in its horizontal posture and lift the wheelchair W to substantially the same height as the deck support surface 11.
[0031]
  As shown in FIG. 8, as the elevating support frame 2 rises to the raised position 2U, the sensing member 8 has its tip portion 8a pushed by the vehicle body B (the standing wall portion Osv of the mounting surface Os) and the lock spring 7 Retreat against. Due to the mutual cam action of the connecting pin 9 and the long hole 6h accompanying the retreat of the sensing member 8, the lock member 6 is rotated downward to the unlock position 6UL, and the tip portion 6a is moved from the engagement step portion 3s of the deck 3. As a result, the first lock mechanism L1 is unlocked as shown in FIG. 6 (b), and the movement of the deck 3 to the inward side of the vehicle with respect to the lifting support work 2 becomes free.
[0032]
  When the motor 14 of the horizontal driving device Dh is rotated forward from this state, the movable body 15 and thus the lock member 16 starts to retract from the most advanced position (see FIG. 9) via the screw rod sl. As the cam pin 16a slides on the inclined surface 19s of the stopper cam 19 in accordance with the retraction, the lock member 16 biased by the lock spring 17 gradually rotates from the unlock position 16UL to the lock position 16L, and finally. The lock member 16 is engaged with the engaged member 3b at the rear end of the deck 3, and the engagement starts to retract the deck 3 toward the storage position 3R (see FIG. 12A). .
[0033]
  As a result of the retreat, when the deck 3 rides on the deck support surface 11 (that is, on the guide roller 12) and reaches the storage position 3R shown in the chain line of FIG. 10, the wheelchair W is transferred from the deck 3 onto the vehicle body floor f. Let the next wheelchair W get in.
[0034]
  Next, a case where the wheelchair W on the deck support surface 11 is lowered to the ground E will be described. In this case, first, the motor 14 of the horizontal drive device Dh is operated in reverse. As a result, the movable body 15 and thus the lock member 16 starts to advance from the last retracted position, and after the stopper wall 15s of the movable body 15 comes into contact with the engaged member 3b of the deck 3 along with the advance, The forward movement of the deck 3 is started (see FIG. 12B).
[0035]
  The cam pin 16a starts to engage with the inclined surface 19s of the stopper cam 19 in response to the advancement of the deck 3 to near the overhanging position 3F (see FIG. 12C), and the cam action causes the lock member 16 to move. The lock spring 17 rotates against the urging force of the lock spring 17 from the previous lock position 16L to the unlock position 16UL. As a result, the engagement between the lock member 16 and the engaged member 3b at the rear end of the deck 3 is released as shown in FIG.
[0036]
  When the deck 3 reaches the overhanging position 3F in this way, the hydraulic cylinder of the elevating drive device Dv is then contracted to lower the elevating support frame 2 to the lowering position 2D while maintaining the same posture. The deck 3 at the position 3F is lowered to the ground E while keeping its horizontal posture. Next, the wheelchair W can be lowered from the deck 3 to the ground E by laying down the step board P on the side to be lowered. In addition, as the elevating support frame 2 starts to descend from the ascending position 2U, the sensing member 8 has its tip portion 8a separated from the vehicle body B (the standing wall portion Osv of the mounting surface Os). As a result, the lock member 6 rotates upward to the lock position 6L and engages the tip 6a with the engagement step 3s of the deck 3, so that the first lock mechanism L1 is automatically locked. It becomes.
[0037]
  Thus, in the ascending / descending process of the lifting / lowering support frame 2, the deck 3 at the extended position 3F can be locked to the lifting / lowering support frame 2 by the first lock mechanism L1. It can be surely prevented from moving due to delusion. In addition, the first lock mechanism L1 is automatically unlocked in conjunction with the raising and lowering support frame 2 rising to the rising position 2U together with the deck 3 during the raising and lowering process, and the raising and lowering support frame 2 starts to descend from the rising position 2U. Since the first lock mechanism L1 is automatically locked in conjunction with the operation, it is not necessary to lock or unlock the first lock mechanism L1 every time the lifting support frame 2 is lifted or lowered, and the work is simpler. And you don't have to worry about forgetting to lock again.
[0038]
  The first lock mechanism L1 includes most of the components (the lock member 6, the lock spring 7, the sensing member 8 and the like) on the lifting support frame 2 side, so that the deck associated with the special provision of the lock mechanism L1. The increase in weight on the three sides can be minimized, and the driving force required for horizontal driving of the deck 3 is reduced accordingly.
[0039]
  On the other hand, in the horizontal movement process of the deck 3, the second lock mechanism L2 is interlocked with the start of the operation of the horizontal drive device Dh to draw the deck 3 in the extended position 3F into the storage position 3R on the inner side of the vehicle body. Automatically locks the deck 3 to the horizontal drive Dh. The locked state is automatically released in conjunction with pushing the deck 3 to the extended position 3F by the horizontal drive device Dh, so that the horizontal drive device Dh is attached to the deck 3 each time the deck 3 moves horizontally. There is no need to perform a lock operation or a lock release operation, and the work is simpler and there is no worry of forgetting to lock.
[0040]
  Further, since the horizontal driving device Dh and the second lock mechanism L2 are supported by the vehicle body B independently of the lifting support frame 2 and the parallel link mechanism G, the weight of the horizontal driving device Dh and the second lock mechanism L2 is supported. Can be directly borne on the vehicle body B side without passing through the lifting support frame 2 and the parallel link mechanism G, and the lifting load of the lifting drive device Dv is reduced accordingly, so that the lifting drive device Dv can be reduced in size and power. Savings are planned. In addition, the horizontal drive device Dh is disposed below the vehicle body floor surface f, and the engaged member 3b for engaging and disengaging the horizontal drive device Dh is disposed at the rear end of the deck 3. A series of mechanisms / members for horizontally driving the deck 3 do not protrude greatly on the deck 3, and therefore the wheelchair W or the like is transported from the three directions to the deck 3 without being obstructed by the series of mechanisms / members. You can get on and off the body without difficulty.
[0041]
  As mentioned above, although the Example of this invention was described, this invention is not limited to these Examples, A various Example is possible within the scope of the present invention. For example, in the above-described embodiment, the deck lifting / lowering storage device A is provided at the entrance / exit O of the bus. However, the deck lifting / lowering storage device A according to the present invention can be used for a side entrance / exit of a vehicle other than a bus or a truck bed. It can also be installed on the side.
[0042]
  Moreover, in the said Example, although the wheelchair W is illustrated as a to-be-conveyed body raised / lowered by the deck 3, in this invention, various to-be-conveyed bodies other than a wheelchair, for example, luggage other than a person, and the person itself are loaded into the deck 3. You may make it mount on.
[0043]
  Moreover, in the said Example, although the parallel link mechanism G provided between this support frame 2 and the base 1 was shown as a raising / lowering guide mechanism of the raising / lowering support frame 2, in this invention, on the base on both the right and left sides of the entrance / exit O You may use the vertical guide mechanism which raises / lowers the raising / lowering support frame 2 vertically along the fixed support | pillar standing upright.
[0044]
  In the embodiment, the first lock mechanism L1 is configured to restrict the horizontal movement of the deck 3 in the retracting direction, and the first stopper wall 3ei restricts the horizontal movement of the deck 3 in the extending direction. The deck 3 at the extended position 3F is locked to the lifting support frame 2 in cooperation with the roller 5 and the roller 5, but in the present invention, instead of the engaging step portion 3s as the engaged portion on the deck 3 side. Thus, by using an engagement hole, an engagement recess or an engagement groove into which the tip portion 6a of the lock member 6 can be fitted, the first lock mechanism L1 can move in either the protruding direction or the retracting direction of the deck 3. The deck 3 may be locked to the elevating support frame 2 so that the deck 3 can be regulated.
[0045]
  Furthermore, in the above-described embodiment, play is provided in the engaging portion in the engaged state (locked state) between the lock member 16 of the first lock mechanism L1 and the engaged member 3b at the rear end of the deck 3. This is so that the tip 16a of the lock member 16 taking an arc locus when unlocking can easily escape the engaged member 3b. Therefore, depending on the shapes of the lock member 16 and the engaged member 3b, It is possible to make the above play zero or little.
[0046]
  Further, the slide support mechanism Gs for supporting the deck 3 on the lifting support frame 2 so as to be horizontally movable is not limited to the structure of the above-described embodiment, and various linear motion guide mechanisms for sliding and guiding the linear motion can be considered.
[0047]
【The invention's effect】
  As aboveBookAccording to the invention, when the lifting support frame is in the raised position, the horizontal drive device can be engaged with and detached from the deck in the extended position and can apply a horizontal driving force between the extended position and the storage position to the deck. Is supported by the vehicle body independently of the lifting support frame and the lifting guide mechanism, so that the weight of the horizontal drive device can be directly borne by the vehicle body without using the lifting support frame and the lifting guide mechanism. Since the lifting load of the drive device is reduced, it is possible to contribute to the downsizing and power saving of the lift drive device, thereby reducing the cost.. Also, as aboveEven if the horizontal driving device supported on the vehicle body side is detached from the deck when the deck moves up and down,Since the deck in the overhang position can be locked to the lifting support frame by the first locking mechanism provided between the deck and the lifting support frame in the lifting process of the lifting support frame,During the lifting and lowering movement, the deck moves loosely from the lifting support frame.FirstThis can be reliably prevented by the lock mechanism, and the support of the deck and the transported object is stabilized.Moreover, the first locking mechanism is mechanically interlocked when the lifting support frame is lifted up to the raised position together with the deck, mechanically interlocked, and mechanically interlocked when the lifting support frame starts to descend from the raised position. Since it is re-locked, when the lifting support frame rises to the highest position together with the deck, the lock between the deck and the lifting support frame is automatically released in conjunction with this, and when the lifting support frame starts to descend from the rising position. In conjunction with this, the deck is automatically locked to the lifting support frame. As a result, it is not necessary to lock or unlock the first lock mechanism each time the lifting support frame is lifted or lowered. The work is simplified and the work efficiency is improved, and there is no worry of forgetting to lock. The second locking mechanism provided between the horizontal drive and the deck is designed to draw the deck in the extended position into the retracted position on the inner side of the vehicle body in a state where the lifting support frame is raised to the raised position together with the deck. The deck is automatically locked to the horizontal drive device mechanically to start the operation of the horizontal drive device, and the mechanical drive device is mechanically interlocked to push the deck to the extended position by the horizontal drive device. Since the deck is automatically unlocked by the horizontal drive unit, the horizontal drive unit is locked to the deck whenever the deck moves horizontally. Alternatively, it is not necessary to perform the unlocking operation, the work is simplified, the work efficiency is improved, and there is no worry of forgetting to lock. MoreThe horizontal drive device is disposed below the floor of the vehicle body, and an engaged member for engaging and disengaging the horizontal drive device is provided at the end of the deck on the vehicle body side, so that the mechanism for horizontally driving the deck Does not overhang on the deck, so you can easily get on and off the deck from its three sides without being disturbed by its mechanism.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an essential part showing an embodiment of a bus equipped with a deck lift storage device of the present invention.
FIG. 2 is a view taken in the direction of arrow 2 in FIG.
FIG. 3 is a view taken along arrow 3 in FIG.
FIG. 4 is a partially cutaway enlarged side view showing a slide support portion of the deck (an enlarged cross-sectional view taken along arrow 4 in FIG. 1).
5 is an enlarged sectional view taken along line 5-5 in FIG.
6 is an enlarged cross-sectional view taken along line 6-6 of FIG. 2, wherein (a) shows a locked state and (b) shows an unlocked state, respectively.
7 is a sectional view taken along line 7-7 in FIG.
FIG. 8 is a view corresponding to FIG. 1 and showing the lifting support frame in the raised position
9 is an enlarged plan view taken along arrow 9 in FIG.
10 is a sectional view taken along line 10-10 in FIG.
11 is an enlarged sectional view taken along line 11-11 in FIG.
FIGS. 12A and 12B are explanatory plan views showing a horizontal movement mode of the deck, in which FIG. 12A shows a state during pulling, FIG. 12B shows a state during pressing, and FIG.
[Explanation of symbols]
1 ... Base
2 ... Lifting support frame
2D ... Lowering position
2U ... Ascending position
3 ... Deck
3b ... engaged member
3F ... Overhang position
3R: Storage position
A ・ ・ ・ ・ Deck lifting storage device
B ... Body
Dh: Horizontal drive device
Dv ... Lifting drive device
f ... Floor
G ... Parallel link mechanism (elevating guide mechanism)
L1 ... 1st lock mechanism (lock mechanism)
W ... Wheelchair (carrier)

Claims (1)

A base (1) fixed to one side of the vehicle body (B), and a predetermined lowered position (2D) and raised position (2U) supported by the base (1) via an elevation guide mechanism (G). ), And a lifting / lowering support frame (2) that can be lifted and lowered in the same posture, a lifting / lowering driving device (Dv) that drives the lifting / lowering supporting frame (2) to lift and lower, and a lifting / lowering supporting frame (2). A deck (3) that can move horizontally between an extended position (3F) protruding outward from the support frame (2) and a retracted position (3R) retracted inwardly of the vehicle body when in (2U) So that the transported body (W) can be unloaded between the deck (3) in the extended position (3F) and the ground (E) when the lifting support frame (2) is in the lowered position (2D). In the deck lifting and lowering storage device in the vehicle,
The first locking mechanism (L1) that locks the deck (3) in the overhanging position (3F) to the lifting support frame (2), the lifting support frame (2) is lifted in the lifting and lowering process of the lifting support frame (2) ( The first locking mechanism (L1) is unlocked and the lifting support frame (2) starts to descend from the ascending position (2U). When the lifting / lowering support frame (2) is in the raised position (2U), the first locking mechanism (L1) is provided between the deck (3) and the lifting / lowering support frame (2). A horizontal driving device (Dh) that can be engaged / disengaged with respect to the deck (3) in the extended position (3F) and can apply the driving force for the horizontal movement to the deck (3) is provided on the vehicle body (B). independently of the lift support frame (2) and the vertical guide mechanism (G) while arranged below the floor (f) Supporting the body (B), the provided horizontal driving device (Dh) engaged member for engaging and disengaging the (3b) to an end portion of the vehicle body side of the deck (3), further the horizontal driving unit and (Dh) Deck (3), when the lifting support frame (2) is in the raised position (2U) and the deck (3) is in the extended position (3F), the deck (3) is moved to the horizontal drive device (Dh). And the horizontal driving device (Dh) starts to drive the deck (3) to the storage position (3R) side from the released state, and mechanically interlocks with the deck (3) to the horizontal driving device (Dh). A deck raising / lowering storage device for a vehicle, wherein a second locking mechanism (L2) for locking is provided .

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