JP6130208B2 - Retractable auxiliary step with handrail for vehicles - Google Patents

Description

  The present invention mainly relates to a retractable auxiliary step with a handrail for a vehicle that serves as a foot joint between a vehicle step already provided on a bus or the like and a ground surface.

  Conventionally, a wide variety of this kind of auxiliary step has been found. For example, in Patent Document 1, a rotating shaft stands upright on a vehicle step installed at a vehicle entrance and exit, and the rotating shaft rotates on the rotating shaft. At the time when the vehicle door is opened, a handrail that can be moved in and out from the vehicle entrance / exit is attached, and in conjunction with the movement operation of the handrail, a retracted position at the lower part of the vehicle step and a forward protruding position below the retracted position A retractable auxiliary step with a handrail for a vehicle provided with an auxiliary step plate that moves forward and backward is disclosed.

  Since this auxiliary step stores and arranges the auxiliary step plate in the lower part of the vehicle, it may not be installed within the approach angle depending on the shape of the vehicle. In such a case, there is a risk that the auxiliary step contacts the road surface. Have the following problems.

  Further, Patent Document 2 discloses a tread that is reciprocally movable between a retracted position on a vehicle step that is already installed in the vehicle and an overhang position at a front lower part of the vehicle step. Each of the pair of left and right arms that suspends the column in the overhang position is pivotally connected between each column and the vehicle step, and the bent part of the bell crank is pivotally connected to the appropriate position of each arm. A link is pivotally connected between one end of the bell crank and the column and between the other end of the bell crank and the vehicle step, and the tread is horizontally disposed at the retracted position and the extended position; and A vehicle interior retractable auxiliary step controlled to reciprocate on a fixed track is disclosed.

  In the above-mentioned auxiliary step, since the auxiliary step comes in contact with the road surface because it is stored in the vehicle, the tread is supported on the left and right by the tread support member (support, arm, bell crank, link) ), The effective opening width of the vehicle step is difficult to secure, and in the retracted state, the tread is horizontally disposed on the vehicle step as an alternative step, so that the tread blocks the vehicle entrance / exit If not, the tread surface is high and it is harder to get on and off than usual.

JP2011-98591A JP 2010-188840 A

  Therefore, in the present invention, a tread is disposed between the vehicle step and the ground surface while ensuring an effective opening width of the vehicle step without requiring a tread support member that suspends and supports the left and right sides of the tread. It is an object of the present invention to provide a retractable auxiliary step with a handrail for a vehicle that is compactly stored in the vehicle without overlapping.

In view of the above problems, the retractable auxiliary step for a vehicle according to the present invention has a rotating shaft standing upright on a vehicle step installed at the vehicle entrance / exit, and the vehicle entrance / exit when the vehicle door is opened by the rotation of the rotating shaft. A handrail that can be moved up and down, and a vertical shaft that can revolve with respect to the rotation shaft and can move up and down so as to appear and move together with the handrail. By pivotally attaching one end in the lateral direction of the rear part of the tread to the front of the lower end that is directed forward when protruding from the mouth, the tread is provided so that it can be raised between vertical and horizontal with the other side edge in the lateral direction upward, and A treadle attachment / detachment means for supporting or releasing the vertical state of the treadle is provided on the rotating shaft, and the side edges in the lateral direction of the lower part of the treadle are folded so as to overlap the treadle in the vertical state of the tread, and project in the horizontal state of the treadle A pair of left and right legs to land The is characterized in that provided in conjunction with the elevating operation of the treadle.
In addition, the tread is pivotally attached to the lower part of the upper and lower sides of each leg, and each of the treads is connected to each other by a transmission mechanism so that it can be rotated forward and backward. A main shaft that projects horizontally forward is provided at the front end of the lower end that is directed forward when projecting from the vehicle entrance, and one side edge of the lateral side of the tread is rotatably attached to the main shaft. Each of the support shafts is characterized in that a gear is axially attached and the gears are engaged with each other.
Further, the rotating shaft is detachably provided on a support pipe standing on the vehicle step, and a bifurcated key provided with a bifurcated portion at the distal end for rotatably holding and holding the rotary shaft in the support pipe is supported by the support pipe. It is characterized by being provided so that it can be inserted and removed from the side.

In short, since the present invention is configured as described above, when stored in the vehicle, the tread plate is folded so that the leg overlaps with the tread plate, and the other end in the lateral direction is upwardly suspended by the tread plate attaching / detaching means provided on the rotating shaft. By being supported, it is integrally held on the rotary shaft together with the vertical shaft, and is immersed in the vehicle through the vehicle entrance so that it can rotate together with the handrail.
Therefore, the treadle can be compactly stored around the rotation axis in the vehicle without overlapping the vehicle step when stored in the vehicle.
In addition, when the vehicle door is opened and exited, when the handrail is rotated around the rotation shaft so as to protrude from the vehicle entrance, the rotation shaft is held as described above via the tread plate attaching / detaching means. The treads and vertical shafts rotate in the same way and protrude from the vehicle entrance with the handrail. In this projecting state, the vertical shafts move up and down along the rotation axis by releasing the suspension support of the treads by the tread plate attaching / detaching means. The tread can be lifted and tilted until it becomes horizontal while lowering the tread with the downboard from the vehicle step.
Then, the leg body folded so as to overlap the lower part of the tread plate projects, and the leg body can land in the horizontal state of the tread board.
Therefore, according to the present invention, the tread board support members that narrow the effective opening width of the vehicle step are not provided on the left and right sides of the tread board as in the prior art, while ensuring the effective opening width of the vehicle step and between the vehicle step and the ground surface. A tread can be placed on the board.
In this way, handrails can be handed over from the inside of the car through the vehicle entrance to the outside treadle, so when getting on and off, always use the handrail as a support for walking from the outside treadle to the vehicle step. While stepping on the tread board and the vehicle step, it is safe to get on and off.
In addition, the handrails and the treads move out of the vehicle only when the door is opened, and are otherwise housed and held in the vehicle, and are not exposed to wind and rain at all times and are not contaminated, so passengers are encouraged to grasp the handrail. Without handrails, handrails can be used as a support for walking while getting on and off.
In addition, since the legs projecting from the lower part of the tread are landed on the ground, the horizontal state of the treads can be reliably and stably maintained and can serve as a safer foot joint.

  The treadle is pivotally attached to the lower part of each leg, and the support shafts are connected to each other in a forward and reverse manner by an appropriate transmission mechanism. A main shaft that projects horizontally forward is provided at the front end of the lower end that faces forward when projecting from the mouth, and one side edge of the lateral side of the tread is rotatably attached to the main shaft, and the main shaft and one supporting shaft adjacent thereto In each of these, since the gears are axially attached and the gears are engaged with each other, one supporting shaft on which the main shaft is attached is rotated by a gear that revolves around the main shaft by raising and lowering the tread plate, Each leg is folded so that it overlaps in the vertical state of the treadle by the rotation of the other support shaft that is linked to the support shaft so that it can freely rotate forward and backward, and it is extended in the horizontal state of the treadle so that it can land and interlock with the elevation of the treadle Can be made.

The rotary shaft is detachably provided on a support pipe standing on the vehicle step, and a bifurcated key is provided on the side of the support pipe. Since the two-way key is inserted into the support tube and the rotating shaft is rotatably held between the two ends of the support tube, the handrail and the treadle can be compacted as described above. It can be stored or placed at a fixed position outside the vehicle to enable safe and good boarding / exiting.
On the other hand, when the maintenance inspection work near the entrance / exit is necessary, the bifurcated key is detached from the support tube as necessary, and the holding of the rotating shaft by the bifurcated portion is released, so that the rotating shaft that becomes a hindrance during the work is handrailed. It is removed from the support tube together with the tread, and after the work, the rotating shaft is inserted into the support tube and the bifurcated key is inserted to return the handrail and the tread.
In this way, the installation and removal of the handrail and the tread board from the vehicle can be performed quickly and easily, so that the practical effects such as smooth execution of the above operation without much time and effort are significant.

It is a perspective view which shows the use condition of the retractable auxiliary | assistant step for vehicles. It is a perspective view which shows a storage state same as the above. It is a side view in a use condition same as the above. It is a top view same as the above. It is a center longitudinal cross-sectional view of a rotating shaft lower end. It is AA sectional drawing of FIG. It is a partially omitted plan view of a bifurcated key. It is a perspective view which shows the internal structure of the tread which landed the leg. It is a top view same as the above. It is sectional drawing of the tread which shows the relationship between the elevation of a tread and the extension of a leg. FIG. 11 is an enlarged view of a main part of FIG. It is a top view of a tread board attaching / detaching means. It is BB sectional drawing of FIG.

An embodiment of the present invention will be described below with reference to the drawings.
The retractable auxiliary step with a handrail for a vehicle according to the present invention is such that, mainly in a vehicle such as a bus, the rotating shaft 1 stands upright on the vehicle step S installed at the vehicle entrance / exit E. By this rotation, the handrail 2 that can be moved in and out from the vehicle entrance E when the vehicle door D is opened, and the upper end side portion can be revolved up and down with respect to the rotary shaft 1 so as to move in and out together with the handrail 2 so that the upper end side is parallel. And a vertical gutter 3 connected to each other.

  Then, one end (left end) in the lateral direction of the rear portion of the tread 4 is pivotally attached to the lower end front portion that is directed forward when protruding from the vehicle entrance E in the vertical shaft 3, so that the tread 4 is connected to the other side edge in the lateral direction. A tread plate attaching / detaching means 5 is provided above the rotary shaft 1 to suspend and support the vertical state of the tread plate 4 so that the tread plate 4 can be lifted up and down (right edge) upward and horizontal. On both side edges (left and right side edges), a pair of left and right plate-like legs 6, 6 a that are folded so as to overlap with the tread 4 in the vertical state of the tread 4 and project in the horizontal state of the tread 4, It is provided in conjunction with the operation.

The rotary shaft 1 is formed by connecting a short solid cylinder 1b to the lower end of a straight pipe 1a having a predetermined length, and the upper end of the straight pipe 1a is the front side when protruding from the vehicle entrance / exit E. A handrail 2 bent downward is continuously formed.
At the center of the lower end of the cylindrical body 1b, a base axis 1d having a diameter smaller than that of the base body 1c and a flat base axis 1d having a diameter smaller than that of the cylindrical body 1b is continuously formed via a base shaft 1c having a smaller diameter than that of the cylindrical body 1b. .

The rotary shaft 1 is detachably provided on a support tube 7 erected on the vehicle step S on the left side toward the vehicle entrance / exit E, and the rotary shaft 1 in the support tube 7 is rotatably held. A bifurcated key 8 provided with a bifurcated portion 8a at the distal end is provided to be detachable from the side of the support tube 7.
The support tube 7 includes a cylindrical portion 7a into which the columnar body 1b in the rotating shaft 1 is loosely inserted, and a hollow base 7b that is fitted and fixed to the lower portion of the cylindrical portion 7a and communicates with the cylindrical portion 7a. The base shaft 1d at the lower end of the cylindrical body 1b loosely inserted in the portion 7a has a smaller diameter than the base shaft 1d provided on the bottom plate 7c of the hollow base 7b, and supports the chamfered portion at the lower end periphery of the base shaft 1b in a slidable manner. It is rotatably supported by the periphery of the through hole.
The lower end of the cylindrical portion 7a existing in the hollow base 7b is set so as to be positioned above the base shaft 1c with the base shaft 1d supported on the periphery of the through hole in the support tube 7 as described above. Is done.

  The hollow base 7b is formed of a rectangular box that is longer on the front and rear sides and is installed on a bottom plate 7c bent upward on the left and right walls. The rear wall corresponding to the side of the support tube 7 has the same height as the base shaft 1c. A through hole 9 of the bifurcated key 8 is provided at the vertical position, and a pair of left and right receiving holes into which the tips of the bifurcated portion 8a of the bifurcated key 8 are inserted at the same height position as the through hole 9 on the front wall of the hollow base 7b. 10 is provided.

The bifurcated key 8 is provided with a bifurcated portion 8a at the distal end of the band plate and a base end that is bent upward in a hook shape. A strap 8b that protrudes rearward is provided on the outer side of the vertical wall of the base end. An engagement convex portion 12 that can be engaged and disengaged from an engagement concave portion 11 fixed to the rear portion of the upper surface of the hollow base 7b is provided on the inner upper portion of the wall.
Then, when the bifurcated key 8 is inserted into the through hole 9 of the hollow base 7b, each tip of the bifurcated portion 8a is inserted into the receiving port 10, and the engaging convex portion 12 is engaged with the engaging concave portion 11, The base shaft 1c is disposed at the crotch portion of the bifurcated portion 8a, and the rotating shaft 1 is rotatably held in the support tube 7 so as to be retained.

  The vertical shaft 3 is composed of a straight tube slightly shorter than the straight tube 1a portion of the rotary shaft 1, and its upper end is short and bent at a right angle, and the bent end portion is a short length parallel to the vertical shaft 3 and the axis. By fixing the sleeve 3a and loosely fitting the straight pipe 1a portion of the rotating shaft with the sleeve 3a, the vertical shaft 3 is reciprocally connected to the rotating shaft 1 in parallel so that the upper end side can revolve and move up and down. .

The tread board 4 is formed in a horizontally long rectangular shape that is long in the left-right direction. Each side has a side wall bent downward, and a handle 13 is provided on the right side wall.
The legs 6 and 6a are formed in a substantially gate shape when viewed from the side of the tread plate 4, and the left and right side edges are bent inwardly in the vertical direction, the upper ends of the side edges are extended upward, and the support shaft 14 , 14a.

  Thus, in the upper part of each leg 6, 6a, the support shafts 14, 14a installed in the front and rear (corresponding to the left and right in the width direction of the legs 6, 6a) are fixed to the left and right sides of the lower part of the tread 4 respectively. While being pivotally attached to the pair of bearing brackets 15 and 15a, they are connected to each other by a transmission mechanism 16 so as to be able to rotate forward and backward.

  The transmission mechanism 16 is a belt wheel 17a rotatably mounted by a belt wheel 17 mounted in the middle of the right support shaft 14 and a pair of front and rear bearing brackets 18 provided on the right side of the left support shaft 14a and below the tread plate 4. A timing belt 19 spanned around the belt wheels 17 and 17a, a driven gear 20 coaxially mounted with the belt wheel 17a, and a left support shaft 14a so as to mesh with the driven gear 20. And a support shaft gear 21.

  On the other hand, a main shaft 22 that projects horizontally forward is provided at the front of the lower end that is directed forward when projecting from the vehicle entrance E in the vertical shaft 3, and a shaft hole that is provided at the left end of the rear side wall of the tread 4. By inserting the left support shaft 14a through the shaft hole provided in the extending portion of the rear bearing bracket 18 that crosses the left support shaft 14a, the lateral one side edge (left side edge) of the tread 4 can be freely rotated with respect to the main shaft 22. The tread board 4 is mounted so that the right edge of the tread board 4 can be raised and lowered between the vertical and horizontal directions, and the rear left end of the tread board 4 is pivotally attached.

A main shaft gear 23 that meshes with a support shaft gear 21 provided on the left support shaft 14a adjacent to the main shaft 22 is attached to the main shaft 22, whereby the leg bodies 6 and 6a are interlocked with the elevation operation of the tread plate 4. The footboard 4 is folded so as to overlap the footboard 4 in a vertical state, and the footboard 4 extends in a double-spread shape in a horizontal state so that it can land.
In addition, a stopper 24 made of a plate piece bent at a predetermined angle is provided at an appropriate position on the upper ends of the legs 6 and 6a so that the upper surface of the stopper 24 is completely overhanging the legs 6 and 6a. In this state, the bottom of the tread 4 is brought into surface contact and stopped, and the leg bodies 6 and 6a are projected in a U shape to horizontally support the tread 4.

The tread plate attaching / detaching means 5 includes a thin protrusion 25 having a tongue shape in a side view provided at the right end of the rear side wall of the tread 4, and a lock device 26 for mounting and holding the protrusion 25 in a vertical state of the tread 4.
The lock device 26 is vertically attached to the horizontal strip 27 and the index plunger 28 that is attached to the free end of the horizontal strip 27 that protrudes in the same direction as the handrail 2 from the rotary shaft 1. And a mounting plate 29 of the protruding piece 25 protruding from the lower side of the left side wall 27a to the right side.

The index plunger 28 urges a pin 28b provided in a projecting manner from the lower end of the cylinder 28a fixed to the horizontal strip 27 in a protruding direction by a spring (not shown) built in the cylinder 28a. The pin 28b is moved up and down by an up / down operation of a knob 28c provided at the upper end so as to be movable up and down.
When the tread plate 4 is in the vertical state, the pin 28b is immersed in the cylinder 28a by moving the knob 28c against the urging force of the spring, and then the projecting piece 25 is disposed on the mounting plate 29. When the projecting piece 25 and the through holes 25a and 29a provided in the mounting plate 29 are matched, the knob 28c is released and the pin 28b is inserted into the through holes 25a and 29a.

Thereby, the tread 4 in the vertical state is suspended and supported by the rotary shaft 1 via the mounting plate 29 of the lock device 26, and is integrally held by the rotary shaft 1 together with the vertical shaft 3, and the rotary shaft 1 (handrail 2). ) And can be rotated.
Further, the release of the vertical state of the tread plate 4 can be achieved by pulling up the knob 28c and immersing the pin 28b into the cylinder 28a so that the tread plate 4 is tilted away from the through holes 25a and 29a.

In the auxiliary step configured as described above, first, in the state in which the handrail 2 and the footboard 4 are stored in the vehicle as shown in FIG. 2, the handrail 2 is directed to the right side of the vehicle entrance E together with the lock device 26. Yes.
At this time, the sleeve 3a of the vertical rod 3 is in the upper limit position on the axis of the rotary shaft 1, and the tread 4 is folded so that the legs 6 and 6a overlap with each other, and the right side edge of the tread 4 is in a vertical state. It is in.

Then, the projecting piece 25 of the tread plate 4 is arranged on the mounting plate 29 of the locking device 26 to suspend and support the tread plate 4, and the suspended state is such that the projecting piece 25 that overlaps vertically and the through hole 25a of the mounting plate 29, When 29a is vertically aligned and the pin 28c of the index plunger 28 is inserted therethrough, the tread 4 is held together with the vertical shaft 3 on the rotary shaft 1 and can rotate with the rotary shaft 1 (handrail 2). Become.
In the illustrated example, the handrail 2 is stored in the vehicle in the vehicle parallel to the vehicle door D so as to be directed to the right side.

In order to allow the handrail 2 and the footboard 4 to protrude from the vehicle entrance / exit E to the outside of the vehicle from the stored state, the vehicle door D is first opened.
Next, the handrail 2 is rotated 90 degrees clockwise with the tip of the handrail 2, and the tread 4 that is suspended and supported perpendicularly to the rotary shaft 1 through the mounting plate 29 of the locking device 26 is projected out of the vehicle together with the vertical shaft 3. Let

Here, holding the handle 13, the knob 28c of the index plunger 28 is pulled up against the urging force of the spring, the pin 28b is pulled out from the through holes 25a, 29a, and the protruding piece 25 is detached from the mounting plate 29. The footboard 4 is tilted, and at the same time, the downboard 3 is lowered along the rotary shaft 1.
The pin 28b is restored by the urging force of the spring when the knob 28c pulled up is released.

Since the tread 4 is tilted about the main shaft 22, the support gear 21 revolves with respect to the main shaft gear 23, and the support shaft 14a coaxial with the revolving shaft rotates the leg 6a in the projecting direction, and at the same time the driven gear 20 The belt wheel 17 via the timing belt 19 together with the belt belt 17a coaxial with the belt wheel 17a is rotated in the reverse direction, and the support shaft 14 on which the belt wheel 17 is attached is reversely rotated with the support shaft 14a. Legs 6 and 6a are projected in the form of double doors.
Then, when the tread 4 is leveled, the stopper 24 stops against the bottom of the tread 4, the legs 6, 6a overhang in a U-shape and stop, and the tread 4 together with the vertical fence 3 until the legs 6, 6a land. Descent.

  In this way, the tread 4 on which the legs 6 and 6a have landed is horizontally arranged as a foot joint between the vehicle step S and the ground surface G, and projects upwardly downward from the inside of the vehicle through the vehicle entrance E. The lower side of the handrail 2 is arranged so that the passenger can step on the board 4 while getting along the handrail 2.

  Next, in order to store the handrail 2 and the footboard 4 in the overhanging state, the vertical rod 3 is raised along the rotation shaft 1 while holding the handle 13 and rotating the footboard 4 in the vertical direction. The legs 6 and 6a are folded so as to overlap the lower part of the tread 4 by the above procedure, and the knob 28c is pulled up against the biasing force of the spring and the pin 28b is pulled out from the through hole 29a before the tread 24 becomes vertical. .

  Next, the projecting piece 25 is placed on the mounting plate 29, and when the through holes 25a and 29a are matched, the knob 28b is released, the pin 28b is inserted into the through holes 25a and 29a, and then the handrail 2 Is rotated in the in-car storage direction about the rotary shaft 1, so that the footboard 4 and the footboard 4 are similarly stored in the car.

  In this retracted state, the bifurcated key 8 is detached from the support tube 7 as necessary during maintenance and inspection work near the vehicle entrance / exit E, and the holding of the rotating shaft 1 by the bifurcated portion 8a is released. The rotating shaft 1 is removed from the support tube 7 together with the handrail 2 and the tread plate 4, and after the operation, the rotating shaft 1 is inserted into the support tube 7 and the bifurcated key 8 is inserted to return the handrail 2 and the tread plate 4. Let

DESCRIPTION OF SYMBOLS 1 Rotating shaft 2 Handrail 3 Vertical shaft 4 Tread board 5 Tread board attaching / detaching means 6, 6a Leg body 7 Support pipe 8 Bifurcated key
8a Fork
14, 14a Spindle
21 Support shaft gear
22 Spindle
23 Main shaft gear D Vehicle door E Vehicle entrance / exit S Vehicle step

Claims (3)

  A rotating shaft stands upright on a vehicle step installed at the vehicle entrance / exit, and a handrail that can freely enter and exit from the vehicle entrance / exit when the vehicle door is opened by the rotation of the rotation shaft, and is projected and retracted together with the handrail. A vertical shaft that can revolve with respect to the rotating shaft and that can be moved up and down in parallel, and a rear portion of the tread on the lower end front portion that is directed forward when protruding from the vehicle entrance in the vertical shaft The treadle attachment / detachment means for supporting or canceling the vertical state of the treadle is suspended by rotating the one end of the treadle in the lateral direction. A pair of left and right legs, which are folded to overlap the tread in the vertical state of the tread, and extend and land in the horizontal state of the tread are interlocked with the elevation of the tread. A car characterized by the provision Use the handrail with a retractable auxiliary step.   The treadle is pivotally attached to the lower part of each leg, and the support shafts are connected to each other in a forward and reverse manner by an appropriate transmission mechanism. A main shaft that projects horizontally forward is provided at the front end of the lower end that faces forward when projecting from the mouth, and one side edge of the lateral side of the tread is rotatably attached to the main shaft, and the main shaft and one supporting shaft adjacent thereto 2. The retractable auxiliary step with a handrail for a vehicle according to claim 1, wherein a gear is pivotally attached to each of the gears and the gears are engaged with each other.   The rotary shaft is detachably provided on a support pipe standing on the vehicle step, and a bifurcated key provided with a bifurcated portion at the distal end for rotatably holding and holding the rotary shaft in the support pipe is provided on the side of the support pipe. The retractable auxiliary step with a handrail for a vehicle according to claim 1 or 2, wherein the retractable auxiliary step is provided so as to be freely inserted and removed from the side.

Images