KR20200027675A - Lift-in and out apparatus for the handicapped - Google Patents

Abstract

The present invention relates to a wheelchair lift which is installed in a vehicle for disabled people or a regular vehicle and, more specifically, to a lift entry/exit apparatus for disabled people which, when a lift enters or exits from a lift storage mounted on a bus, prevents the lift from escaping from the track, which may occur due to a processing error, assembly error, or the like, and allows a user to manually put in or take out the lift when power supply is blocked. To this end, according to the present invention, the lift entry/exit apparatus for the disabled people, which operates to allow a lift to enter or exit from a lift storage installed in a bus, comprises: a rack mounted in a longitudinal direction of the storage in accordance with the direction of the lift to enter or exit; a turning bracket mounted on a transport frame, which supports the lift and enters or exits from the storage in a longitudinal direction of the storage, to turn in the direction of the rack by an elastic force; a fixing bracket joined with the turning bracket by a hinge, and fixed on the storage, thereby supporting the turning bracket to turn by the elastic force; and a pinion driven by the power of a motor and moving in the direction of the rack along the turning bracket to be gear-engaged with the rack or move along the turning bracket in a direction of going further away from the rack.

Description

Lift-in and out apparatus for the handicapped

The present invention relates to a wheelchair lift installed in a vehicle for a disabled person or a general vehicle, and in particular, prevents lift derailment that may occur due to processing errors and assembly errors when the lift is drawn in or out in a lift box mounted on a bus, and provides power. It is configured to manually lift or withdraw the lift when shut off.

The reason that it is difficult for people with disabilities to use public transportation is because of the difference between the height of the vehicle's interior floor and the ground, and a low-floor bus was developed and commercialized to solve this problem.

1 is a side view showing a low-floor bus according to the prior art, and FIG. 2 is a conceptual diagram showing an operation relationship of a slope in the low-floor bus shown in FIG. 1.

1 and 2, the low-floor bus 10 is a bus designed by lowering the floor of a vehicle where passengers are located, and when the slope 11 for the disabled mounted on the low-floor bus 10 is drawn out to the ground It is configured to push the wheelchair (1) to be able to board.

However, in the case of a high-speed bus or the like running a long distance, the cargo compartment is located under the floor of the vehicle where the passenger is located as the cargo and the like have to be stored and moved.

Therefore, the high-speed bus with a cargo compartment cannot lower the floor like the above-described low-floor bus, so it is impossible to install a slope for the disabled.

The lift for the disabled was developed to solve the problem of the slope for the disabled.

In the drawing, FIG. 3 is a front view of a bus equipped with a lift for a disabled person according to the prior art, and FIG. 4 is a conceptual view showing an operation relationship of a lift in a state in which the lift door shown in FIG. 3 is opened.

As shown in FIG. 3, the bus 20 for the disabled has a door 21 on which the general public can get on and off on the front side, and a middle door 23 on which the disabled person with a wheelchair 1 can get on and off on the middle side. ) Is formed, the lift door 30D is formed in the storage box 25 located under the middle door 23, and the lift 30 for moving the wheelchair in the vertical direction is built in the storage box 25.

And after opening the lift door 30D and the middle door 23, as shown in Figure 4, after operating the lift 30, the lift 30 comes out of the storage box of the bus after the lift 30 is seated on the ground On the contrary, the lift 30 located at the top moves downwards, seats on the ground, and enters the inside of the storage box 25 of the bus 20 for the disabled.

In the lift configured as described above, the lift should be smoothly drawn in or out by the power of the motor when entering or drawing out of the storage box, but when the moving distance of the lift is long, processing errors such as gears cutting the power of the motor and assembly errors Because the power transmission is not smoothly performed, the lift does not operate normally and derailment occurs outside the normal operating range.

In addition, when power is cut off while the lift is withdrawn from the storage box, if the lift cannot be manually entered into the storage box, the lift must be manually drawn into the storage box as the starting of the vehicle becomes difficult, but the gears for moving the lift are mutually There is a disadvantage in that the frictional resistance may be large or mechanically impossible to draw in, and the weight of the lift may be large, making it difficult to manually insert the lift into the storage box.

Republic of Korea Patent Publication No. 10-2016-0037509 (publication date; 2016.04.06)

The present invention has been invented to solve the problems of the prior art as described above, and the derailment that may occur due to processing errors or assembly errors of parts when the lift for transporting a wheelchair is inserted or withdrawn in a storage box mounted on a bus. The object of the present invention is to provide a lift in / out device for a disabled person.

In addition, the present invention is a lift input and output device for a disabled person designed to prevent the lift from moving even if the power is cut off while the handicapped is transported, so that the lift does not move, and the lift can be unlocked and the lift can be manually entered. The aim is to provide a lift in / out device for a disabled person.

The present invention for achieving the above object is a lift in and out device for a disabled person to operate so that the lift in or out in a storage box installed in the interior of the bus, the rack mounted in the longitudinal direction of the storage box in accordance with the direction of the lift in and out , Supports the lift and is mounted on the transfer frame that is drawn in and out in the longitudinal direction of the storage box, and the pivoting bracket pivots in the direction of the rack by an elastic force, and the pivoting bracket is hinged and fixed to the storage box so that the pivoting bracket pivots by elastic force Technical features include a fixed bracket to be driven by the power of the motor, and a pinion that moves along the orbiting bracket in the direction of the rack and moves along the orbiting bracket in a direction that is meshed with the rack or spaced apart from the rack.

In addition, according to a preferred embodiment of the present invention, the motor is equipped with a worm gear box that cannot be reversed, and the pinion rotates by driving the worm shaft.

In addition, according to a preferred embodiment of the present invention, the storage box includes a pusher for pressing the turning bracket or motor so that the pinion is separated from the rack.

In addition, according to a preferred embodiment of the present invention, either of the orbiting bracket and the fixing bracket is equipped with a tension adjusting bolt, and the pinion and the pinion are adjusted by adjusting the elastic force of the coil spring located between the orbiting bracket and the fixing bracket with the tension adjusting bolt. Adjust the bonding force of the rack.

In addition, according to a preferred embodiment of the present invention, the fixing bracket is fixed to the storage box, the turning bracket is located on the side of the fixing bracket, a motor equipped with a worm gear box is fixed to the side of the turning bracket, and the worm shaft is attached to the turning bracket. It is rotatably mounted, and the drive gear is fixed to the worm shaft, and the drive gear engages the rack with the pinion mounted on the swing bracket in a geared state.

In addition, according to a preferred embodiment of the present invention, the worm shaft penetrates the long hole formed in the fixing bracket, and the worm shaft is movable along the long hole as the turning bracket rotates.

In addition, according to a preferred embodiment of the present invention, the rotating guide shaft is fixed to the rotating bracket, the rotating guide shaft penetrates the long hole formed in the fixed bracket, and the rotating guide shaft is movable along the long hole according to the rotation of the rotating bracket.

As described above, the lift in / out device for a disabled person according to the present invention is a coupling relationship between a rack to be positioned in the longitudinal direction of the storage box and a pinion that rotates and moves along the rack, and the pinion supported by the elastic force of the elastic body is placed in the rack. Even if the rack and pinion teeth are incompletely configured due to the processing error or the assembly error of the rack due to the combination, the pinion can be safely moved along the rack without derailment from the rack as the pinion is compensated by elasticity. Therefore, there is an advantage that it is also possible to prevent the derailment of the lift moving in connection with the pinion.

In addition, the motor for driving the pinion is configured to cut power by the worm gear box. This is to prevent the fall of the disabled person in the lift by maintaining the stationary state without turning the pinion when the motor is stopped because the power is cut off by reversing the power when the motor is stopped. In this case, after safely evacuating the disabled, the worker manually dismantles the combination of the pinion and the rack so that the lift can be smoothly drawn into the inside of the storage box.

Therefore, even if the lift stops due to a power failure or a motor failure during the operation of the lift, there is an advantage that the operator can manually move the bus by entering the lift into the storage box.

1 is a side view showing a low-floor bus according to the prior art,
FIG. 2 is a conceptual diagram showing the operating relationship of the slope in the low-floor bus shown in FIG. 1.
Figure 3 is a front view of a bus equipped with a lift for the disabled according to the prior art,
FIG. 4 is a conceptual view showing an operation relationship of a lift in a state in which the lift door shown in FIG. 3 is opened.
5 is a perspective view showing a lift for a disabled person according to an embodiment of the present invention,
6 is a perspective view showing a state in which the upper cover of the storage box of the lift shown in FIG. 5 is removed;
7 is a perspective view showing a device for drawing in and out of a lift for the disabled shown in FIG. 6,
8 is a perspective view showing a tension control unit of the drawing-out device shown in FIG. 7.
FIG. 9 is a conceptual view showing a turning relationship of a turning bracket according to tension adjustment of the tension adjusting unit shown in FIG. 8.
10 is a perspective view showing the pusher shown in FIG. 6,
FIG. 11 is a conceptual view showing a separation state of a rack and a pinion according to the operation of the pusher shown in FIG. 10.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a device for drawing in and out of a lift for a disabled person according to the present invention will be described in detail.

In the drawing, FIG. 5 is a perspective view showing a lift for a disabled person according to an embodiment of the present invention, FIG. 6 is a perspective view showing a state in which the upper cover of the storage box of the lift shown in FIG. 5 is removed, and FIG. 7 is shown in FIG. 6 8 is a perspective view showing an in / out device of a lift for a disabled person, and FIG. 8 is a perspective view showing a tension adjusting unit of the in / out device shown in FIG. 7. And Figure 9 is a conceptual diagram showing the turning relationship of the turning bracket according to the tension adjustment of the tension adjusting unit shown in Figure 8, Figure 10 is a perspective view showing the pusher shown in Figure 6, Figure 11 is a pusher of Figure 10 It is a conceptual diagram showing the separation of the rack and pinion according to the operation.

As shown in Figure 5, the lift 110 for the disabled is configured to be drawn in or out in the storage box 101, the storage box 101 is installed in the cargo compartment of the bus 20, as described above, the lift 110 Turns between the ground and the middle door 23 of the bus 20 in a state that is withdrawn from the storage box 101 and helps a wheelchair or a disabled person who has boarded the lift 110 to get on the bus 20 or get off the ground. Help you do it.

In the lift 110 for the handicapped shown in FIG. 5, folding handles 113 are mounted on both sides of the bottom plate 111 of the lift 110 in a horizontal state, and a wheelchair 1 is provided in front of the bottom plate 111. ) Is installed so that the entrance footboard 115 is folded or unfolded to move between the ground and the floorboard 111, and between the bottom floor 111 and the inner floor of the bus 20 is installed on the rear surface of the floorboard 111. The footrest 116 is mounted to be folded or unfolded so that the wheelchair 1 can move.

And the bottom plate 111 is connected to one side of the orbiting link 117, the orbiting link 117 is coupled to the transfer frame 120 that moves in the longitudinal direction of the box 101 from the inside of the box 101.

The lift-in / out device for the disabled lift according to the present invention is mounted on the transfer frame 120 for entering or withdrawing the inside of the storage box 101 to drive the lift 110 safely into and out of the storage box 101. There is configured to allow the operator to smoothly pull the lift 110 manually.

As illustrated in FIG. 6, the rack 121 is fixed to the inside of the storage box 101 in the longitudinal direction of the storage box 101, that is, in the direction in which the lift 110 is drawn in and out.

And the transfer frame 120 is moved in the longitudinal direction of the rack 121 by the rotation of the pinion 157 while the pinion 157 mounted on the transfer frame 120 is engaged with the rack 121, The turning link 117 connected to the transfer frame 120 and the lift 110 connected to the turning link 117 are drawn into the inside of the storage box 101 or out of the storage box 101.

In the lift 110 configured as described above, when processing the long length rack 121 or fixing the rack 121 to the storage box 101, an error occurs, and thus moves together with the transfer frame 120. The pinion 157 may be derailed from the rack 121 or power transmission may not be smoothly performed. In addition, when the pinion 157 is driven by the worm gear, when the power supplied to the worm gear that cannot be reversed is cut off, there is a problem in that the lift 110 cannot be manually received in the storage 101, according to the present invention. The lift-in / out device for the handicapped lift solves this problem.

Hereinafter, a device for drawing in and out of a lift for a disabled person according to the present invention will be described in detail.

7 and 8, the transfer frame 120 is located inside the storage box 101 and is configured to be movable in the longitudinal direction of the storage box 101.

A rack 121 fixed to the upper cover 101C of the storage box 101 is located at an upper portion of the transfer frame 120, and a pair of guide rollers supporting both sides of the rack 121 at the upper portion of the transfer frame 120 (123) is fixed at two points. Therefore, when the transfer frame 120 is moved in the longitudinal direction of the rack 121, the transfer frame 120 is configured to be movable in the forward direction along the rack 121 without twisting. In addition, a pair of guide rollers 123 are mounted on the reinforcing frame 119 connecting the pair of orbiting links 117 and the rack 121 is inserted when the orbiting link 117 is drawn into the interior of the storage box 101 It enters between the pair of guide rollers 123 mounted on the orbiting link 117 to support the lift 110 to be smoothly drawn.

The fixing bracket 125 is fixed to the transfer frame 120 below the rack 121. On the side of the fixing bracket 125, the orbiting bracket 130 is spaced apart, and one side of the fixing bracket 125 and the orbiting bracket 130 is hinged.

Therefore, the pivot bracket 130 is pivotable in the vertical direction around the hinge shaft 131, and the pivot bracket 130 includes a pinion 157 that rotates in engagement with the rack 121 and a motor that drives the pinion 157. (150) is mounted, the elastic spring coil spring 140 is interposed between the fixing bracket 125 and the orbiting bracket 130 to provide an elastic force to move the pinion 157 toward the rack 121.

More specifically, the motor 150 is equipped with a worm gear box 151 on the motor 150 located on the side of the orbiting bracket 130. Although not shown in the drawing, the worm shaft 151S can rotate on the orbiting bracket 130. So as to be mounted by bearings. In addition, the worm gear box 151 is fixed to the side of the turning bracket 130 by fastening the bolt 153.

And the worm shaft (151S) is a spur gear drive gear 155 is fixed, the drive gear 155 is an idle gear pinion 157 is mounted to the turning bracket (130). Therefore, when the driving gear 155 and the pinion 157 are rotated upward about the hinge shaft 131 while the turning bracket 130 is in a geared state, the pinion 157 and the rack 121 are geared, and vice versa. When turning downward, the gear bites of the pinion 157 and the rack 121 are disassembled.

In addition, the motor 150 and the worm gear box 151 also move together with the turning bracket 130 according to the turning of the turning bracket 130.

On the other hand, between the fixing bracket 125 and the turning bracket 130, the coil spring 140 is located to provide an elastic force so that the turning bracket 130 pivots upward.

Specifically, as shown in Figure 9, the lower fixing piece 127 of the fixing bracket 125 is formed with a projection 129 inserted into the lower end of the coil spring 140, the bending piece 133 of the turning bracket 130 In the tension adjusting means, the tension adjusting bolt 153 is fastened, and the lower end of the tension adjusting bolt 153 is inserted into the upper end of the coil spring 140. In this state, when the tension adjusting bolt 153 is rotated, the length of the coil spring 140 is shortened or lengthened, and when it is shortened, the elastic force applied to the turning bracket 130 is weakened and the pinion 157 and the rack 121 When the coupling force is weakened or the pinion 157 is separated from the rack 121, and conversely, when the length of the coil spring 140 is increased, the elastic force applied to the turning bracket 130 becomes stronger, and the coupling force between the pinion 157 and the rack 121 is increased. As the elastic movement range of the pinion 157 becomes large and the horizontality of the rack 121 is not constant, a gap is formed between the pinion 157 and the rack 121, and the gap is compensated by the elastic force of the coil spring 140. It becomes possible.

On the other hand, in the state where the worm shaft 151S penetrates the fixing bracket 125, the worm shaft 151S penetrates the fixing bracket 125 so that the turning bracket 130 is pivotable around the hinge shaft 131. The long hole 136 is formed. In addition, the rotation guide shaft 138 fixed to the orbiting bracket 130 penetrates the long hole 136 of the orbiting bracket 125 to support the rotation of the orbiting bracket 130.

The lift withdrawal device for a disabled person according to the present invention is configured to draw or withdraw the lift 110 through the worm gear box 151, which cannot be reversed. This is configured to prevent the lift 110 from stopping and moving due to the characteristic of the worm gear box 151, which is impossible to reverse if power is cut off while transferring the wheelchair 1 to the lift 110, thereby preventing accidents such as the fall of a disabled person. This is to prevent occurrence.

However, if the motor 150 is not operated because the power is cut off, the lift 110 cannot be stored in the storage box 101. In the lift take-off device for a disabled person according to the present invention, the pinion when the motor 150 is stopped It is configured to disassemble the combination of 157 and rack 121 so that the lift 110 can be manually inserted into the storage box 101.

In the above-described configuration, the tension adjusting bolt 153 is rotated to adjust the length of the coil spring 140 to be short, that is, in a state in which the pinion 157 is easily separated from the rack 121 and the elastic force is adjusted. When the motor 150 is pressed through the pusher 160 described in the above, the turning bracket 130 is turned downward by the force pressing the motor 150, and the combination of the rack 121 and the pinion 157 is disassembled. .

10 and 11, the pusher 160 is mounted on the upper part of the motor 150, and when the lever 161 of the pusher 160 is pivoted by a lever, the hinge 161 is coupled to the lever 161. When the lever 163 is moved in the vertical direction, the lever 161 of the pusher 160 is pushed to disassemble the pinion 157 and the rack 121, and the lever 163 mounted on the storage box 101 is pushed. When the motor 150 is pressed downward, and the force applied to the motor through the lever 163 is greater than the elastic force of the coil spring 140, the pivot bracket 130 pivots downward and is mounted on the pivot bracket 130 The pinion 157 is also moved downward to be separated from the rack 121.

Here, the pusher 160 is described as the pinion 157 being separated from the rack 121 by pressing the motor 150, but the pinion is applied even if the pusher 160 presses the pivot bracket 130, not the motor 150. 157 is detachable from the rack 121. That is, the pusher 160 is configured to separate the pinion 157 from the rack 121, and the pusher 160 presses the motor 150 or presses the turning bracket 130 to the pinion 157. Corresponds to one means for separation from the rack (121).

When the rack 121 and the pinion 157 are separated as described above, the lift 110 can be pushed into the storage box. In this case, three pairs of guide rollers 123 slide in contact with both sides of the rack 121. The drawer 101 is drawn inside.

When the lever 110 of the pusher 160 is returned to the original position in the state where the lift 110 is completely drawn in the storage box, the pinion 157 is matched to the rack 121 by the elastic force of the coil spring 140, and the tension adjusting bolt ( 153) controls the amount of elastic force applied to the pinion 157.

As described above, as the pinion 157 and the rack 121 are configured to be adjusted with the elastic force of the coil spring 140, the processing error of the rack 121 when assembling the rack 121 to the storage box 101 or Even if an assembly error occurs, the position of the pinion 157 is buffered with the elastic force of the coil spring 140 and the lift 110 can be safely transported along the rack 121.

The lift in / out device for a disabled person according to the present invention described above is described as the turning bracket turning upward by the elastic force of the coil spring so that the rack and pinion are geared, but this is mounted on the bottom of the storage box and the elastic force of the coil spring. It is also possible to configure the pivoting bracket to pivot downward.

101: storage box
110: lift
111: bottom plate
115: entry platform
116: advancement
117: turning link
119: Reinforcement frame
120: Transfer frame
121: rack
123: guide roller
125: fixing bracket
127: Fixed piece
129: projection
130: swivel bracket
135: tension adjusting bolt
140: coil spring
150: motor
151: Worm Gear Box
517: pinion
155: drive gear
160: pusher
161: lever
163: lever

Claims (7)

As a lift take-out device for a disabled person operating so that the lift 110 is drawn in or out in the storage box 101 installed in the bus,
Rack 121 mounted in the longitudinal direction of the storage box 101 in accordance with the direction of the inlet and out of the lift 110,
A transfer frame 120 supporting the lift 110 and drawing in and out in the longitudinal direction of the storage box 101,
It is mounted on the transfer frame 120 and the turning bracket 130 to turn in the direction of the rack 121 by the elastic force,
A fixed bracket 125 hinged with the turning bracket 130 and fixed to the storage box 101 to support the turning bracket 130 to turn by an elastic force,
Driven by the power of the motor 150 and moved in the direction of the rack 121 along the orbiting bracket 130, along the orbiting bracket 130 in the direction of being meshed with the rack 121 or spaced apart from the rack 121 Lift in and out device for the disabled, characterized in that it comprises a moving pinion (157).
According to claim 1,
The motor 150 is equipped with a worm gear box 151 that cannot be reversed, and a lift in / out device for a disabled person, characterized in that the pinion 157 rotates by driving the worm shaft 151S.
According to claim 2,
Lift box for the disabled, characterized in that it comprises a pusher 160 for pressing the pivot bracket 130 or the motor 150 so that the pinion 157 is separated from the rack 121 in the storage box 101.
The method according to any one of claims 1 to 3,
One of the orbiting bracket 130 and the fixing bracket 125 is equipped with a tension adjusting bolt 135 and tensions the elastic force of the coil spring 140 located between the orbiting bracket 130 and the fixing bracket 125. The lift in / out device for a person with a disability, characterized in that by adjusting with the adjustment bolt 135, the coupling force between the pinion 157 and the rack 121 is adjusted.
According to claim 4,
The fixing bracket 125 is fixed to the storage box 101, the turning bracket 130 is located on the side of the fixing bracket 125, and the motor 150 equipped with the worm gear box 151 is mounted on the side of the turning bracket 130. ) Is fixed, the worm shaft 151S is rotatably mounted on the pivot bracket 130, the driving gear 155 is fixed on the worm shaft 151S, and the driving gear 155 is mounted on the pivot bracket 130. Lift pin in and out device for the disabled, characterized in that the pinion (157) is engaged with the rack (121) in a geared state.
The method of claim 5,
The worm shaft 151S penetrates the long hole 136 formed in the fixing bracket 125, and the worm shaft 151S is movable along the long hole 136 as the turning bracket 130 rotates. Lift in / out device.
The method of claim 5,
The rotating guide shaft 138 is fixed to the turning bracket 130, the rotating guide shaft 138 penetrates the long hole 136 formed in the fixing bracket 125, and the rotating guide shaft is rotated according to the turning of the rotating bracket 130 (138) Lift in and out device for the disabled, characterized in that it is movable along the long hole (136).

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