JP4411619B2 - Automatic handrail raising / lowering device for vehicle lifting device - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to an automatic raising / lowering device for a handrail in a vehicle lifting device.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a number of automatic raising and lowering handrail devices for safely getting on and going up and down on a platform in a vehicle lifting device have been proposed. In many cases, the platform stands up from the horizontal position during ascending and descending and is stored in the vehicle, so that many of the platforms are raised and lowered following the standing or tilting operation of the platform. This patent applicant has also proposed an automatic hoisting handrail device as disclosed in Japanese Patent Application Laid-Open No. 2000-16151.
[0003]
[Problems to be solved by the invention]
As explained in the prior art, in the conventional vehicle lifting device, the handrails often undulate by following upstand operation or tilting operation of the platform. there were. The automatic raising handrail device proposed by the applicant of the present patent application has been made in order to eliminate the conventional drawbacks. However, since the automatic lifting handrail device has an operating rod connected to the front side of the base end shaft support portion of the handrail, the structure of the shaft support portion is complicated and the assembly is troublesome. Further, since the handrail is structurally flipped upward, it is in the same direction as the turning direction of the platform, and the upper portion is blocked by the handrail.
[0004]
The automatic handrail raising / lowering device for a vehicle lifting / lowering device according to the present invention is intended to improve the troublesome points in the structure and the rotation direction of the handrail.
[0005]
[Means for Solving the Problems]
A platform is pivotally supported by a base end shaft so that it can rotate at a required angle with respect to a lower end of a gate frame of a vehicle lifting device that moves up and down between a vehicle entrance and a road surface. The operating shaft is mounted at a required distance from the end shaft to the tip side. The lower end of the platform hoisting motor with the upper end pivotally supported by the gate frame is pivotally connected to the operating shaft, and the platform hoisting motor operates to retract the platform from the horizontal position to the vertical position, and the vertical position. The L-type proximal bracket part is pivotally supported by the handrail mounting shaft at the upper half position of the gate frame, and the middle of the L-type proximal bracket part is supported. One outer end protrudes outward from the gate frame, a handrail is attached, the other inner end opposite to the gate frame is placed in the gate frame, and the other inner end and the operating shaft are connected to each other by an interlocking rod. It is in the handrail automatic raising / lowering device in the vehicle lifting / lowering device in which the handrail is raised and lowered in the retracted position and the horizontal use position in conjunction with the rotation.
[0006]
The platform hoisting motor and interlocking rod are accommodated in the gate frame, and the operating shaft provided at the base end of the platform is inserted into the opening of the operating shaft provided on the inner wall surface of the gate frame from the outside to enter the gate frame. It may be deployed and connected to the platform undulating motivator and interlocking rods.
[0007]
A plate that pivotally connects the upper ends of the platform hoisting motors may be provided in the gate frame, and the supporting shafts may be projected.
[0008]
A vertically long opening may be provided in the front portion of the gate frame, and one outer end of the L-shaped base end bracket portion may protrude outwardly from this opening.
[0009]
The bearing hole of the shaft connection body connected to the lower end of the piston rod of the platform hoisting prime mover is loosely fitted to the first shaft portion of the operating shaft, and the second shaft portion protruding to a small diameter at the outer end thereof is connected to the lower end of the interlocking rod. The bearing hole of the shaft connection part to be connected may be loosely fitted, and the screw may be screwed into the screw hole that opens from the outside to the end surface of the operating shaft, and the shaft connection may be performed.
[0010]
A coil spring is fitted to the lower end of the piston rod of the platform hoisting motor, the lower end surface of the coil spring is connected to the shaft-attached connecting body, and the other upper end is connected to the intermediate slide connecting body fitted to the piston rod. When storing vertically, the coil spring may be compressed at the end, and when the platform is next extended horizontally, the coil spring may be provided so that smooth extension can be performed using the compression force of the coil spring.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
A platform is pivotally supported by a base end shaft so that it can rotate at a required angle with respect to a lower end of a gate frame of a vehicle lifting device that moves up and down between a vehicle entrance and a road surface. Attach the operating shaft at a required distance from the end shaft to the tip side, connect the lower end of the platform hoisting motor with the upper end pivotally supported by the gate frame to this operating shaft, and operate the platform hoisting motor. The platform can be stowed from the horizontal position to the vertical position, and the platform can be pivoted from the vertical position to the horizontal position. The middle is pivotally supported by a handrail mounting shaft, one outer end of the L-shaped base bracket part protrudes outward from the gate frame, a handrail is attached, and the other inner end opposite is placed in the gate frame An automatic handrail raising / lowering device in a vehicle lifting / lowering device in which the other inner end and the working shaft are connected to each other by an interlocking rod and the handrail rod is raised and lowered in a retracted position and a horizontal use position in conjunction with the rotation of the operating shaft. .
[0012]
【Example】
DETAILED DESCRIPTION OF THE INVENTION Hereinafter, a handrail automatic raising / lowering apparatus in a vehicle lifting / lowering apparatus according to the present invention will be described with reference to the drawings. First, the vehicle lifting / lowering apparatus 1 is based on a floor inside a passenger entrance 3 of a vehicle 2. A pair of support plates 5, 5 facing left and right at a required interval are arranged on the surface 4, and a pair is arranged in the left and right lateral directions with a required interval, and an upper link is attached to each of the front and rear support plates 5, 5. 7a and the lower link 7b are pivotally supported by supporting shafts 6a and 6b, and the opposite upper link 7a and lower link 7b are respectively connected to the top end of the gate frame 8 by shafts 9a and 9b. The connecting end of one end of the hydraulic cylinder device 10 is connected to the support shaft 6a, and the connecting end of the other end of the hydraulic cylinder device 10 is connected to the opposite support shaft 9b. The upper link 7a and the lower Pivots link 7b, in which the platform 11 connected to the lower end of the gate frame 8 to lift between the entrance 3 and the road surface in the passenger compartment of the vehicle 2.
[0013]
The platform 11 is pivotally supported by the base end shaft 12 so as to be rotatable at a required angle with respect to the lower end of the gate frame 8. In addition, as shown in FIG. 1, the operating shaft 13 is attached at a required distance from the proximal shaft 12 at the proximal end of the platform 11 to the distal end side.
[0014]
The lower end of a platform hoisting motor 14 (for example, consisting of a hydraulic cylinder 14a and a piston rod 14b) pivotally supported on the gate frame 8 with respect to the operating shaft 13 is pivotally connected, and the operation of the platform motor 14 The platform 11 can be retracted from the horizontal position shown in FIG. 1 to the vertical position and can be rotated from the vertical position to the horizontal position.
[0015]
An L-shaped proximal bracket portion 15 is pivotally supported by a handrail mounting shaft 16 at the upper half position of the gate frame 8, and one outer end 15 a of the L-shaped proximal bracket portion 15 is outward from the gate frame 8. The other inner end 15b opposite to the inner frame 15 is disposed in the gate frame 8, and the other inner end 15b and the operating shaft 13 are connected to each other by an interlocking rod 18 so that the operating shaft 13 is rotated. In conjunction with the movement, the handrail 17 is raised and lowered between the storage position and the horizontal use position.
[0016]
In the embodiment, the platform hoisting motor 14 and the interlocking rod 18 are accommodated in the gate frame 8, and the operating shaft 13 provided at the base end of the platform 11 is opened on the inner wall surface of the gate frame 8. The platform undulating motor 14 and the interlocking rod 18 are arranged in parallel from the outside through the hole 19.
[0017]
A plate 20 that pivotally connects the upper end of the platform hoisting motor 14 is provided in the gate frame 8, and a supporting shaft 21 that is connected is projected.
[0018]
A vertically long opening 22 is provided in the front portion of the gate frame 8, and one outer end 15 a of the L-shaped base end bracket portion 15 projects outwardly from the opening 22.
[0019]
A bearing hole 24 of a shaft connection member 23 connected to the lower end of the piston rod 14b of the platform hoisting motor 14 is loosely fitted to the first shaft portion 13a of the operating shaft 13, and a second shaft projecting to a small diameter at the outer end thereof. A bearing hole 26 of a shaft connection part 25 connected to the lower end of the interlocking rod 18 is loosely fitted to the part 13b, and a screw 28 is screwed into a screw hole 27 that opens from the outside to the end surface of the operating shaft 13, thereby being axially attached. It is connected.
[0020]
A coil spring 29 is fitted and arranged at the lower end of the piston rod 14b of the platform hoisting motor 14, the lower end surface of the coil spring 29 is connected to the shaft connection 23, and the other upper end is connected to the piston rod 14b. When connecting the body 30 and retracting the platform 11 vertically, the coil spring 29 is compressed at the end, and then when the platform 11 is extended horizontally, the compression force of the coil spring 29 can be used for smooth extension. Provided.
[0021]
【The invention's effect】
Since the automatic raising and lowering handrail device in the vehicle lifting and lowering apparatus according to the present invention is as described above, the handrail can be raised and lowered following the raising and lowering of the platform, and handrails can be provided on both sides of the platform when the platform is raised and lowered.
[0022]
In addition, since the base end of the handrail is connected to the L-type base end bracket portion, the handrail can be stored compactly in parallel with the gate frame and does not interfere with the storage of the platform.
[0023]
The lower end of the platform hoisting motor and the lower end of the interlocking rod can be reliably and smoothly connected to the operating shaft, and the platform and handrail rod can be smoothly raised and lowered.
[0024]
In addition, when the platform is extended horizontally, the coil spring can be smoothly extended using the compression force of the coil spring, and the handrail can be reliably deployed according to the undulations.
[Brief description of the drawings]
FIG. 1 is an external perspective view showing a state in which a platform is tilted horizontally and a handrail is set horizontally in the handrail automatic raising / lowering device in the vehicle lifting apparatus of the present invention.
It is a side view which shows the state which fell the platform horizontally and set the handrail similarly horizontally.
FIG. 2 is a partially cutaway sectional side view showing a state in which the platform is tilted horizontally and the handrail is also set horizontally.
FIG. 3 is an operation explanatory side view showing a state in which the platform is rotated in the vertical state and the handrail is rotated and stored in the vehicle.
FIG. 4 is a partial side view showing a state in which the platform is erected vertically and the handrail is rotated along the gate frame and stored in the vehicle.
FIG. 5 is an enlarged exploded perspective view showing a linkage structure between a lower end of a piston rod of a platform hoisting motor and a handrail operating linkage.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vehicle raising / lowering device 2 Vehicle 3 Cabin entrance / exit 4 Floor surface 5 Support plate 6a Support shaft 6b Support shaft 7a Upper link 7b Lower link 8 Gate frame 9a Support shaft 9b Support shaft 10 Hydraulic cylinder device 11 Platform 12 Base end shaft 13 Actuating shaft 13a First shaft portion 13b Second shaft portion 14 Platform hoisting motor 14a Hydraulic cylinder 14b Piston rod 15 L-type proximal bracket portion 15a One outer end 15b Other inner end 16 Handrail mounting shaft 17 Handrail rod 18 Interlocking rod 19 Actuation Shaft opening 20 Plate 21 Support shaft 22 Opening 23 Shaft-attached connecting body 24 Bearing hole 25 Shaft-attaching connecting piece 26 Bearing hole 27 Screw hole 28 Screw 29 Coil spring 30 Intermediate slide connecting body

Claims (6)

A platform is pivotally supported by a base end shaft so that it can rotate at a required angle with respect to a lower end of a gate frame of a vehicle lifting device that moves up and down between a vehicle entrance and a road surface. The operating shaft is mounted at a required distance from the end shaft to the tip side. The lower end of the platform hoisting motor with the upper end pivotally supported by the gate frame is pivotally connected to the operating shaft, and the platform hoisting motor operates to retract the platform from the horizontal position to the vertical position, and the vertical position. The L-type proximal bracket part is pivotally supported by the handrail mounting shaft at the upper half position of the gate frame, and the middle of the L-type proximal bracket part is supported. One outer end protrudes outward from the gate frame, a handrail is attached, the other inner end opposite to the gate frame is placed in the gate frame, and the other inner end and the operating shaft are connected to each other by an interlocking rod. An automatic handrail raising / lowering device in a vehicle lifting device in which a handrail is raised and lowered in a retracted position and a horizontal use position in conjunction with rotation. The platform hoisting motor and interlocking rod are accommodated in the gate frame, and the operating shaft provided at the base end of the platform is inserted into the opening of the operating shaft provided on the inner wall surface of the gate frame from the outside to enter the gate frame. The automatic handrail raising / lowering device in the vehicle lifting / lowering device according to claim 1, wherein the handrail raising / lowering device is deployed and connected to a platform raising / lowering motor and an interlocking rod. 3. A handrail automatic raising / lowering device for a vehicle lifting / lowering device according to claim 1 or 2, wherein a plate for connecting the upper end of the platform hoisting motor is fixedly connected to the gate frame, and a supporting shaft for connecting is projected. 4. A vehicle lifting / lowering device according to claim 1, wherein a longitudinally long opening is provided in a front portion of the gate frame, and one outer end of the L-shaped base bracket portion projects outwardly from the opening. Automatic handrail raising and lowering device. The bearing hole of the shaft connection body connected to the lower end of the piston rod of the platform hoisting prime mover is loosely fitted to the first shaft portion of the operating shaft, and the second shaft portion protruding to a small diameter at the outer end thereof is connected to the lower end of the interlocking rod. Claims 1, 2, and 3, wherein the bearing holes of the shaft connection parts to be connected are loosely fitted, and the screws are screwed into the screw holes opened from the outside to the end face of the operating shaft, so that the shafts are fixedly connected. The handrail automatic raising / lowering apparatus in the vehicle lifting / lowering apparatus of Claim 3 or Claim 4. A coil spring is fitted and installed at the lower end of the piston rod of the platform hoisting motor, the lower end surface of the coil spring is connected to the axially connected body, and the other upper end is connected to the intermediate slide connecting body fitted to the piston rod. The first, second, and second aspects of the present invention are provided so that when the coil spring is compressed vertically, the coil spring is compressed at the final stage, and then when the platform is extended horizontally, the coil spring can be smoothly extended using the compression force. An automatic handrail raising / lowering device in the vehicle lifting / lowering device according to claim 3, 4 or 5.

Images