JP2553582Y2 - Side structure lower reinforcement device for bus body - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for reinforcing a lower part of a side structure of a bus body equipped with a vertical lift step which a wheelchair user can easily get on and off.

[0002]

2. Description of the Related Art Various types of vehicles for wheelchair users have been developed in the past. For example, as disclosed in Japanese Patent Publication No. 61-4263, a ramp for wheelchair access is stored under the floor of the vehicle. Conventionally, the slope is taken out of the storage location when getting on and off and crossed between the floor of the vehicle and the road surface, and when the getting on and off is completed, the slope is removed and stored in the storage location.

[0003] However, in the case of a bus which is a public vehicle, a vertical lift step which enables a wheelchair user to safely and easily get on and off and which a healthy person can get on and off is most preferable.

In the vertical lift step, as shown in FIGS. 1A and 1B, the step 1 for getting on and off a healthy person is extended in a horizontal state flush with the floor 2 as shown by a chain line 1 '. Telescopic mechanism 3 and a lift mechanism 4 for lowering and raising the extended step 1 'between the position flush with the floor 2 and the ground, and the step telescopic mechanism 3 and the lift mechanism 4 Is operated by, for example, a hydraulic or electric actuator.

[0005]

In a bus equipped with a vertical lift step as described above, the lift step moves up and down from the same height as the floor to the ground. The force bone 5 provided in the front-rear direction along the part is inevitably interrupted by the lift step part, and has a problem that the strength and rigidity of the vehicle body during traveling are reduced.

[0006] The present invention has as its main object to address the above problems.

[0007]

According to the present invention, a vertical lift step is provided at a lift port, and the vertical lift step is provided along a lower end portion of a vehicle body side plate.
The vertical body lift provided in the front-rear direction
To the bus that is divided by the steps
And a connecting / disconnecting means for connecting and disconnecting the front and rear divided body skeletons via a step skeleton provided on the step or by a movable skeleton separate from the step. It is characterized by the following.

[0008]

According to the above, when a wheelchair user gets on and off,
Step by actuating disconnect the vehicle power bone around at coupling disconnecting means enables extension and vertically movable, the car
After the chair user's getting on and off, the steps are contracted to make the step of getting on and off of a healthy person, and then the front and rear vehicle body bones are connected by the connecting and disconnecting means. Alternatively, the structure is firmly connected by movable bones, whereby the strength and rigidity of the monocoque structure of the vehicle body during running can be sufficiently maintained.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a first embodiment of the present invention. In this embodiment, a step force bone 11 having, for example, a square cross section is formed at the edge of the first step of step 1, and the step force bone is formed. The blocks 12, 12 with female threads are fixed to the vicinity of the front and rear end portions 11 by welding or the like.

The front and rear vehicle body skeletons 5 and 5 facing the front and rear ends of the step skeleton 11 are provided with the female threaded block 1.
Female threaded fixing blocks 6, 6 facing each other are fixed, and a threaded shaft 7 is screwed into each threaded hole of the female threaded fixing block 6 and the female threaded block 12 facing each other. A motor 8 for rotating the motor 7 is mounted on a slide rail 9 provided on the vehicle body so as to be slidable in the front-rear direction. Reference numeral 10 denotes a motor stopper.

When the motor 8 rotates in one direction (the direction in which the screws are loosened) from the state in which the threaded shaft 7 is screwed into the female threaded blocks 12 as shown in FIG. The threaded shaft 7 rotates to move out of the female threaded block 12, and the motor 8 is also guided by the slide rail 9 so that the front motor slides forward and the rear motor slides rearward. When the threaded shaft 7 completely comes out of the threaded hole of the female threaded block 12, the motor 8 is stopped, the connection between the step 1 and the vehicle body is cut off, and the step extension mechanism 3
By the operation of the lift mechanism 2, the step 1 is extended and moved up and down as shown by a chain line 1 'in FIG.

When the getting on and off of the wheelchair user is completed, step 1
Is returned to the position for getting on and off the healthy person indicated by the solid line, the motor 8 is rotated in the opposite direction to the above. Then the threaded shaft 7
The screw is fed at the threaded portion with the screw hole of the female threaded fixed block 6, moves together with the motor 8 in the direction of the female threaded block 12, and is screwed into the threaded hole of the female threaded block 12, (C in FIG. 1). As shown in ()), when the motor 8 comes into contact with the motor stopper 10, the threaded shaft 7 is further rotated to apply a predetermined tension to the step force bone 11, and the motor 8 stops.

As described above, the front and rear body skeletons 5, 5 are firmly connected by the step skeleton 11 provided in the step 1 by the threaded shafts 7, 7, which are the connecting members. The strength and rigidity during traveling as a monocoque structure can be sufficiently maintained.

In the first embodiment, the fixed block 6 with female threads and the block 12 with female threads opposed thereto are used.
Means that the pitch of the screws must be continuous. For this purpose, for example, a threaded shaft 7 screwed into a threaded hole of a female threaded fixing block 6 fixed to the vehicle body side (vehicle body 5). Then, the female threaded block 12 may be screwed in advance, and the female threaded block 12 may be fixed to the stepping bone 11 by welding in this state.

FIG. 2 shows a second embodiment of the present invention. In this embodiment, a female threaded block 12 is supported by a spring 13 so as to be pressed against a stopper 11a provided at the end of a stepping force bone 11. Step force bone 11,1
1, a threaded shaft 7 having a first threaded portion 7b which is screwed into a threaded hole of a female threaded block 12.
The second screw portion 7c provided on the outer periphery of the flange portion 7a is screwed into the screw hole of the fixed block 6 with female thread, and the second screw portion 7c is loosely attached to the front end of the screw hole of the fixed block 6 with female thread. A boring portion 6a to be fitted is provided, and a front surface 6 of the boring portion 6a is provided.
b and the front surface of the flange 7a, the step force bone 11
The motor stopper 10 shown in FIG. 1 is omitted by applying a predetermined tension to
Structures other than the above are the same as those in FIG. 1, and the operation is also the same.

In this example, the female threaded block 12 is mounted in the step force bone 5 so as to be fixed in the rotational direction (for example, by fitting of square cross sections) and to be able to move by bending the spring 13 in the front-back direction. Therefore, there is no need to make the screw pitch continuous with the screw hole of the female screw fixing block 6 as shown in FIG.

FIG. 3 shows a third embodiment of the present invention. In this embodiment, a square pipe 14 is inserted and fixed between the step power bone 11 and the vehicle body power bones 5 and 5 before and after it. It is like that.

That is, square pipes 14, 14 having an outer cross-sectional shape substantially matching the inner cross-sectional shapes of the vehicle body power bones 5, 5 and the step power bone 11 are inserted into the front and rear body power bones 5, 5, respectively. To be slidable. The square pipe 1
A rotary shaft 15 is fitted in the square pipe 14 so that it cannot move in the axial direction with respect to the square pipe 14 but can rotate freely within a range of 90 °. Air cylinders 16, 16 having a rotation function of shafts for sliding the square pipes 14, 14 and rotating the rotation shafts 15, 15 are mounted on the vehicle body side (vehicle power bones).

In the above description, the square pipe 14 is used to
Step 1 can be extended and retracted and moved up and down, so that the wheelchair user can get on and off when the retracted step force bone 11 is not fitted.

After the wheelchair user gets on and off, step 1
Is returned to the position for getting on and off the healthy person, the air cylinder 16 is operated to slide the square pipe 14 into the step force bone 11, and then the rotary shaft 15 is rotated by 90 °.
Then, the collar-shaped hook portion 15a provided at the tip of the rotating shaft 15 engages with the stopper 11b provided in the step force bone 11. Then the air cylinder 16
Pulls the square pipe 14 so that the step force bone 11
, A predetermined tension is applied to the front and rear vehicle body
Are firmly connected by the step force bone.

When a wheelchair user gets on and off the vehicle, first, the tension application of the air cylinder 16 is released, and then the rotating shaft 1
5 is rotated 90 ° in the opposite direction to release the engagement between the hook portion 15a and the stopper 11b, and then the square pipe 14 is slid into the power bone 5 of the vehicle body to perform step 1
And disconnects the vehicle from the vehicle body.

FIG. 4 shows a fourth embodiment of the present invention. In this embodiment, the connecting arm 17 firmly connects the power bone 5 and the step force angle 11 to each other.

That is, the connecting arm 17 is composed of an arm portion 17a made of a square pipe material or the like, a shaft portion 17b hanging at a right angle from one end of the arm portion 17a, and a square pipe material hanging at a right angle from the other end of the 17a. The shaft portion 17b is fitted to the body skeleton 5 so as to be slidable and rotatable in the axial direction (up and down direction).
The slide and the rotation are controlled by an air cylinder 19 attached to the lower part of the air cylinder.

A core shaft 18 having a flange-shaped hook portion 18a at its tip is rotatably fitted in the connecting arm 17, and the rotation of the core shaft 18 is also controlled by the air cylinder 19. .

The linking arm 17 is attached to the step force bone 11.
There is provided an engagement hole 11c into which the fitting portion 17c is fitted from top to bottom.

In the above, the connecting arm 17 is shown in FIG.
When the vehicle is in the position indicated by the chain line, the user can step on / off and lift the step 1 to get on / off the wheelchair user.

After returning the step 1 to the position for getting on and off the healthy person, the connection arm 17 is moved by the operation of the air cylinder 19 as shown in FIG.
4A, the fitting portion 17c is fitted into the engaging hole 11c of the stepping force bone 11 by rotating 90 ° as shown by the solid line in FIG. Then, by rotating the core shaft 18 by 90 °, the hook portion 18a is engaged with the lower edge of the engagement hole 11c,
As shown by the solid line in FIG. 4B, the vehicle body skeleton 5 and the step skeleton 11 are connected by the connecting arm 17.

In order to release the connection by the connecting arm 17, the stop shaft 18 is first rotated to release the engagement between the hook portion 18a and the lower edge of the engaging hole 11c. Is slid upward to fit the fitting portion 17c.
From the engaging hole 11c, and then the connecting arm 17
Is rotated by 90 ° to a position indicated by a chain line in FIG. 4 (A).

In FIG. 4A, reference numeral 25 denotes step 1.
Is a step holding cylinder for fixing the position of the vehicle to the position for getting on and off the healthy person.

In all of the first to fourth embodiments shown in FIGS. 1 to 4, the step 1 is provided with the stepping bone 11 and the stepping bone 11 and the vehicle body bones 5 and 5 before and after the stepping bone 11 are connected. Although an example is shown in which the strength and rigidity of the monocoque structure of the vehicle body are maintained by firmly connecting, a movable force bone corresponding to the step force bone is not provided in step 1 without providing a step force bone. The strength and rigidity of the monocoque structure of the vehicle body may be maintained by connecting the front and rear vehicle body bones with the movable power bone.

FIG. 5 shows a fifth embodiment of the present invention.
Shown in

[0033] In FIG. 5, 20 is a movable force bone made of a square pipe member, one end portion of the movable power bone 20 is pivotally mounted so as to be rotatable to the body force the bone 5 of either one example the front longitudinal, front side A rotating air cylinder 22 provided at the lower part of the body skeleton 5 allows the vehicle to rotate 90 ° about the shaft attachment portion. A rotating shaft 21 is provided in the movable force bone 20.
Are fitted so that they cannot move in the axial direction and can rotate 90 ° in the rotational direction.

At the rear of the front body skeleton 5 and at the front of the rear body skeleton 5, catchers 23 having a U-shaped cross section are fixed to the inner surface of the vehicle body side wall by welding or the like, respectively. At the rear of 23 is a driver-type rotary air cylinder 2
4 are attached.

In the above, as shown by the chain line in FIG. 5 (A), when the movable force bone 20 is positioned below the floor in the vehicle width direction, the step 1 is extended and retracted and the lift operation is performed to allow the wheelchair user to get on and off. It can be performed.

After returning the step 1 to the position for getting on and off the healthy person, the movable force bone 20 is rotated by 90 ° by the rotary air cylinder 22, and the movable force bone 20 is moved back and forth as shown in FIG. By fitting into the catchers 23, 23 and then operating the driver-type rotary air cylinder 24, the tip of the driver portion 24 a becomes, for example, +
The rotating shaft 21 is rotated by 90 ° in the groove.
Then, the claw portions 21a provided on the rotating shaft 21 are engaged with and fixed to the end faces of the catchers 23, 23.

In this state, the front and rear body skeletons 5 and 5 are firmly connected by the movable skeleton 20 located below the step 1, and the strength and rigidity of the monocoque structure of the body can be sufficiently maintained.

When the wheelchair user gets on and off the vehicle, the driver-type rotary air cylinder 24 rotates the rotary shaft 21 in reverse.
Is rotated in reverse to release the engagement between the claw portion 21a and the end face of the catcher, and then the movable force bone 20 is rotated by 90 ° by the operation of the rotary air cylinder 22 to the position shown by the chain line in FIG.

FIG. 5 shows an example in which the catcher 23 is made of a member different from the body skeleton 5.
The body 3 may be integrally formed with the vehicle body skeleton 5, and in this case, a stopper may be provided on the vehicle body skeleton 5 for engaging the claw portion 21a.

[0040]

[Effects of the Invention] As described above, according to the present invention, the steps for getting on and off are lift steps for getting on and off wheelchair users ,
A vehicle provided in the front-rear direction along the lower end of the vehicle body side plate
Physical strength bones are interrupted by the lift step
On buses that are not used, except when wheelchair users get on and off,
Another variable is the step force bone or step provided in step
At the dynamic force bones, by which is adapted to rigidly couple the body force bone front and rear of the step, as it can be maintained strength as a vehicle body of the monocoque structure during running, the rigidity, practical It can bring a great effect.

[Brief description of the drawings]

1A and 1B show a first embodiment of the present invention, wherein FIG. 1A is a side view of a bus, FIG. 1B is an explanatory view of a vertical lift step, and FIG. It is a top view which shows the relevant structure with a physical strength bone.

FIG. 2 shows a second embodiment of the present invention, and is a cross-sectional view of a connecting portion between a step skeleton and a vehicle skeleton.

FIGS. 3A and 3B show a third embodiment of the present invention, wherein FIG. 3A is a plan view showing a related structure between a step skeleton and a vehicle skeleton before and after the step skeleton, and FIG. It is X sectional drawing.

4A and 4B show a fourth embodiment of the present invention, in which FIG. 4A is a plan view showing a related configuration between a step power bone and vehicle body power bones before and after the step power bone, and FIG. It is a Y arrow view.

5A and 5B show a fifth embodiment of the present invention, wherein FIG. 5A is a plan view, and FIG. 5B is a view taken along the line ZZ of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Step 5 Body skeleton 6 Female thread fixing block 7 Threaded shaft 8 Motor 9 Slide rail 10 Motor stopper 11 Step skeleton 12 Female thread block 13 Spring 14 Square pipe 15 Rotating shaft 15a Hook 16 Air cylinder 17 Connecting arm 18 Medium Child shaft 18a Hook 19 Air cylinder 20 Movable bone 21 Rotary shaft 22 Rotary air cylinder 23 Catcher 24 Driver type rotary air cylinder

Claims (2)

(57) [Scope of request for utility model registration] And 1. A step telescopic mechanism extending and retracting operation of the step for boarding, drop between the elongated step the floor level and the ground, equipped with a lifting mechanism for raising, the steps for the passenger wheelchairs A bus that can be used as a lift step for passengers
And is provided in the front-rear direction along the lower end of the vehicle body side plate.
The vehicle's power bone is interrupted by the lift step
In the divided parts, a step force bone is provided at a lower portion near the edge of the first step of the step, and the step force bone is provided .
And a coupling member for coupling the vehicle body force the bone around the, side structures bottom of bus bodies, characterized in that provided in the upper SL wheel <br/> strength bone part and an actuator for coupling disconnecting actuating the coupling member Reinforcement device . 2. A step for extending and retracting a step for getting on and off.
The telescopic mechanism and the extended steps
Equipped with a lift mechanism that lowers and raises
Meet our bus has become a step for serial getting on and off to be able to lift step for wheelchair users getting on and off
And is provided in the front-rear direction along the lower end of the vehicle body side plate.
The vehicle's power bone is interrupted by the lift step
In what has been divided, to one of the vehicle body force bone before and after, the one end portion of the movable force bone, the other end portion of the movable force bones are bonded directly or through a catcher to the other of the vehicle body force bone bond position and, between the disconnection position the movable force bone facing the vehicle width direction, with mounting for rotation, bus bodies on the side structure bottom, characterized in that provided an actuator for rotating actuating the movable force bone Reinforcement device.