KR20120118317A

KR20120118317A - Step apparatus for school bus

Info

Publication number: KR20120118317A
Application number: KR1020110035808A
Authority: KR
Inventors: 한봉천
Original assignee: 주식회사 마노
Priority date: 2011-04-18
Filing date: 2011-04-18
Publication date: 2012-10-26

Abstract

PURPOSE: An auxiliary foothold apparatus for a school bus is provided to prevent the sink of an auxiliary step apparatus due to passengers. CONSTITUTION: An auxiliary foothold apparatus for a school bus comprises a case(10), an auxiliary foothold(30), a reversible driving motor, a power transmission member, a slide block, and a cylinder shaft. The case forms exterior surface and accommodates components. The auxiliary foothold is installed to be inserted in the case. The reversible driving motor generates the power for the insertion of the auxiliary foothold. The power transmission member comprises a driving wheel, a driven wheel, a chain. The chain is couple with the driving wheel and the driven wheel and fixed to the auxiliary foothold. The slide block is fixed to the both sides of the auxiliary foothold. The cylinder shaft is fixed in the case to guide the moving of the auxiliary foothold.

Description

Auxiliary scaffolding device for school bus {STEP APPARATUS FOR SCHOOL BUS}

The present invention relates to an auxiliary scaffolding device for a children's school bus, which is installed under the door of a door in a vehicle to draw in and out of a door, thereby increasing convenience at the time of getting on and off. It is related to the auxiliary scaffolding that is connected to the outside unfolded or drawn into the inside is easy to get on and off and relates to the auxiliary scaffolding device for children's school bus to prevent safety accidents due to withdrawal of the auxiliary scaffold.

Multi-seater vehicles, such as school buses and vans for children, have a high floor with the body, which is inconvenient for children to get on and off, and a high risk of safety accidents. Vehicles operated in elementary schools, kindergartens, child care facilities, sports facilities, and various schools have a very high risk of safety accidents when the elderly and children who are vulnerable to the traffic environment get on and off.

Therefore, in order to prevent traffic accidents in advance, such vehicles are installed with an auxiliary footrest and indicator lights suitable for a child's body, and in this case, a structural change inspection and permission is obtained from a related agency. It is required to keep and submit a declaration certificate accordingly. Here, children's school bus means a motor vehicle reported pursuant to Article 48-4 of the Road Traffic Act.

As described above, the multi-seater vehicle has an access scaffold used for getting on and off at the entrance side, and the access scaffold is also located at a very high position from the ground due to the high body bottom of the vehicle. Therefore, the elderly or small children with inadequate behavior are difficult and uncomfortable to climb up and down the access footboard when using the vehicle, and may lead to safety accidents.

Conventionally, implementation examples of various types of auxiliary scaffolds are presented, and a guide rail method, a cylinder method, or a rotation method using a driving motor are similar in structure and performance. For example, in the conventional auxiliary scaffolding, the left and right widths of the auxiliary scaffolds that are inundated need to be very careful when getting on and off, and in fact, safety accidents that occur when the passengers get on and off the feet are too thick. It protrudes a lot to the bottom and is shocked by small obstacles and road bumps.

If the auxiliary scaffold departs from the state where the auxiliary scaffold starts and stops due to a malfunction and failure of the auxiliary scaffold, an accident may occur that impacts an adjacent person. Also, at night, the auxiliary scaffold is installed at the bottom of the outside of the vehicle, Difficult to check, users are experiencing inconvenience.

Because of these problems, consumers complain that they are dangerous devices, not safety devices due to frequent breakdowns and malfunctions. Some users repair the system two or three times later because they are mandatory auxiliary scaffolds. In order to compensate for this, in the conventional technology, a van for a child, such as a child-protected vehicle, is configured to be folded to the lower side of the vehicle body that is in line with the door, thereby promoting safety and convenience of the user when getting on and off.

The conventional auxiliary scaffold is simply configured to be foldable in the lower side of the vehicle, there is an inconvenience that the elderly or children have to pull out the auxiliary scaffold every time you get on and off. In addition, when the driver starts without recognizing the driver's footrest in the unfolded state, there is a risk of a safety accident in which the foothold hits a pedestrian.

In addition, there is a risk of safety accident that the child's foot is caught or injured in the sidewalk block or obstacle while the footrest is extended.

The present invention has been invented in view of the above-mentioned circumstances, and receives the driving force of the forward and reverse motor, and the auxiliary scaffold is extended to the outside of the vehicle body in the forward driving direction, and the auxiliary scaffold is driven into the auxiliary scaffolding in the chain method so that the auxiliary scaffold is drawn into the vehicle body during the reverse driving. When the auxiliary scaffold is extended to the outside of the vehicle body or drawn in, the slide block mounted on the auxiliary scaffold is operated by the slide method guided along the cylindrical shaft, and the deflection of the auxiliary scaffold under the load of the passenger when getting on and off. The purpose is to provide an auxiliary scaffolding device for children's school bus that can be prevented.

The present invention for achieving the above object, the case 10 to form the exterior and accommodate the following members in the inner space, the auxiliary scaffold 30 is installed to be pulled in and out to the outside and the case 10, the auxiliary Forward and reverse drive motor 20 for generating power for the intake and withdrawal of the scaffold 30, the drive wheel 22 coupled to the rotation axis of the forward and reverse drive motor 20 and the driven wheel corresponding to the drive wheel 22 (23) and the chain 24 is coupled to the driving wheel 22 and the driven wheel 23, and the auxiliary scaffold 30 is fixed to one side, and the driving wheel 22 and the driven wheel ( 23) slide blocks fixed to both sides of the bottom surface of the auxiliary scaffold 30, the power transmission member and the through groove is disposed in the front and rear lower side of the auxiliary scaffold 30, respectively, the front and rear direction Fixed to both sides and the slide block Is slidably coupled through and comprises a cylindrical shaft 28 to support while supporting the forward and backward advance of the auxiliary scaffold (30).

In addition, the bottom of the auxiliary scaffold 30 is fixed to the slide support 30C of the metal material on both sides in the front and rear direction, and the slide block 36 is fixed to the slide support 30C, respectively, so that the cylindrical shaft ( 28) and slidably coupled, characterized in that it is reinforced to prevent deformation of the vertical load of the auxiliary scaffold (30).

In addition, the auxiliary scaffold 30 is provided with a safety sensing rod 35 to be reversed when contacted with an external object during the forward unfolding operation, one side of the safety sensing rod 35 to the reverse of the safety sensing rod 35 The abnormal detection sensor 31 for detecting is installed, and when the auxiliary scaffold 30 moves forward and comes into contact with an external object, the advancing operation can be stopped based on the detection signal of the abnormal detection sensor 31.

In addition, a plurality of magnets are installed on the outer circumference of the driving wheel 22 at predetermined intervals, and one side of the case is provided with a sensing element for generating a pulse according to the proximity of the magnet and transmitting the main controller to the main controller. The moving distance of the auxiliary scaffold 30 may be determined to control the forward or backward distance of the auxiliary scaffold 30 in response to the number of pulses.

In addition, rails 17 are installed at both sides of the case 10 in the direction in which the auxiliary scaffold 30 is moved forward and backward, and both sides of the auxiliary scaffold 30 are movable bearings 19 along the rail 17. ), The auxiliary scaffold 30 is slidably supported on the cylindrical shaft 28 via the slide block 36 at the lower middle part, and on the rails 17 through the bearings 19 at both edges. It is characterized by being slidably supported.

According to the present invention as described above, in conjunction with the door switch for detecting the opening and closing of the sliding door, the auxiliary footrest can be expanded or folded safely inside or outside the vehicle body automatically or manually by the operation of the automatic / manual switch, thereby increasing the convenience of use. Rather, it detects external objects during the unfolding operation to prevent safety accidents.

1 is an external perspective view of an auxiliary scaffolding device for a children's school bus according to an embodiment of the present invention;
Figure 2 is an internal separated perspective view of the auxiliary footrest device for children's school bus of the present invention,
Figure 3 is an internal assembly perspective view of the auxiliary footrest device for children's school bus of the present invention,
4 is a view for explaining the pull-in state of the auxiliary footrest device for children's school bus according to the present invention;
Figure 5 is a view for explaining the withdrawal state of the child scaffolding auxiliary board apparatus for school according to the present invention,
Figure 6 is a perspective view of the withdrawal state of the child scaffolding auxiliary scaffolding device according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an external perspective view for explaining the child footsteps for the child commuter bus according to an embodiment of the present invention, the present invention is a power transmission in a chain method and the auxiliary footrest 30 connected to the chain is extended to the outside of the vehicle body or Consists of a slide shaft by a cylindrical shaft and a slide block to be operated to be drawn into the inside, such that children can safely get on and off the auxiliary footrest 30.

At the front end of the auxiliary footrest 30 is installed a safety sensing rod 35 which is retracted when contacted with an external object during the operation to spread out the vehicle body, safety sensing rod 35 on one side of the safety sensing rod 35 The abnormality detection sensor 31 which detects when it comes in contact with this object and backwards is installed. Inside the case 10 fixed to the vehicle body, the auxiliary scaffold 30 that receives power from the chain by the operation of the stationary drive motor installed in the motor cover 21 is installed to be extended to the outside of the vehicle body or drawn into the vehicle body.

The left and right sides of the case 10 are provided with fixing brackets 15 for easily fixing the case 10 to the lower portion of the vehicle body. Therefore, the present invention increases the convenience of use by fold the auxiliary footrest 30 to the outside of the vehicle body or by folding the inside of the vehicle body automatically or manually by the operation of the automatic / manual switch in conjunction with the door switch for detecting the sliding door opening and closing. In addition, it can prevent external accidents by detecting external objects during unfolding.

Figure 2 is an exploded perspective view showing an auxiliary scaffolding device for a children's school bus of the present invention, Figure 3 is an inner assembly state of the upper cover is open to explain the internal configuration of the auxiliary scaffolding device for a children's school bus of the present invention. .

The present invention is installed so that the auxiliary scaffold 30 of the auxiliary scaffolding device installed on the lower side of the usual entrance into the vehicle body, the case 10 constituting the auxiliary scaffolding device on the vehicle body by the fixing bracket 15 When the door is opened in the fixed state, the auxiliary scaffold 30 is drawn out to the outside of the vehicle body in the vehicle width direction. That is, the case 10 is installed at a predetermined distance away from the bottom of the vehicle body in the direction of the ground so that the rider can get on and off the auxiliary footrest 30 at the time of boarding or getting off, thereby increasing the convenience of the rider having a narrow stride such as a child. In addition, the auxiliary scaffold 30 is drawn in to the inside of the vehicle body when the vehicle is driven so that the auxiliary scaffold 30 may be prevented from colliding with an external object during the driving.

The present invention is the case 10 is made of a lower cover (10a) and the upper cover (10b), the slide support (30c) is fixed to the lower side of the scaffold frame (30a) and the urethane cover (30b) is coupled to the upper side Auxiliary scaffold 30 is provided, while the forward and reverse drive motor 20 is installed inside the motor cover 21 mounted on the upper cover 10b. The slide support 30c is to reinforce the bending deformation may occur in the scaffold frame 30a when a vertical load is applied downward by the occupant to the scaffold frame 30a, which is usually formed of a metal plate.

And the rotational force of the forward and reverse drive motor 20 is transmitted to the auxiliary scaffold 30 by the chain so that the auxiliary scaffold 30 makes a linear motion, for example, the auxiliary scaffold 30 when the forward and reverse drive motor 20 is driven in the forward direction. ) Is expanded or pulled in when driving in the reverse direction. Here, the auxiliary scaffold 30 is configured to slide by the cylindrical shaft 28 and the slide block 36 when the operation is expanded to the outside of the vehicle body or folded inside.

That is, the slide support 30c for vertical load reinforcement is fixed to the bottom of the scaffold frame 30a constituting the auxiliary scaffold 30, and the slide block 36 made of aluminum is used as the bottom of the slide support 30c. Is fixed, and the slide block 36 is slidably coupled to the cylindrical shaft 28 through a groove passing through the slide block 36. Therefore, when the auxiliary scaffold 30 is moved forward or backward, the slide block 36 installed on both sides of the auxiliary scaffold 30 moves along the cylindrical shaft 28, so that the auxiliary scaffold 30 is stable to the cylindrical shaft 28. It is possible to move forward or backward in the supported state, and even if it receives a vertical load downward by the passengers to get on and off, it is possible to maintain a stable horizontal state.

In the above, the scaffolding frame 30a may be formed of a metal plate and coupled to the slide support 30c by welding, and the urethane cover 30b is covered to prevent slippage or damage.

The cylindrical shaft 28 is provided below both sides of the auxiliary scaffold 30 to guide the movement of the slide block 36.

On the other hand, the fixing member 27 is installed on the middle one side of the chain 24 to fix the scaffold frame 30a. For example, by forming a bolt groove in the fixing member 27, the fixing member 27 and the scaffold frame ( 30a) can be fixed by bolting.

Therefore, when the chain 24 moves in accordance with the rotation of the forward and reverse drive motor 20, the auxiliary scaffold 30 moves with the chain 24 to be expanded outside the vehicle body or drawn into the vehicle body.

The fixing bracket 15 and the case 10 are preferably formed of an alloy material having excellent structural rigidity, and include a lower cover 10a and an upper cover 10b to have a rectangular box shape. As shown in FIG. 3, the case 10 has a forward and backward driving motor 20 disposed on the rear side of the upper cover 10b based on the vehicle width direction. And the motor cover 21 covering the forward and reverse drive motor 20, and the forward and reverse drive motor 20 for rotating the chain 24 in the forward or reverse direction is provided. In addition, the case 10 will be built a variety of components, depending on the size of the vehicle or the position of the auxiliary footrest 30 may be appropriately changed in size or height.

The forward and reverse drive motor 20 is installed inside the motor cover 21 to receive power from the outside to rotate the drive wheel 22. The drive wheel 22 has a driven wheel 23 installed correspondingly thereto. Since the chain 24 is fixed and the auxiliary scaffold 30 is fixed to the chain 24, the forward and reverse drive motor 20 generates power to move the auxiliary scaffold 30 forward or backward.

The forward and reverse drive motor 20 is installed at the rear side of the case 10 with respect to the direction in which the auxiliary scaffold 30 is mounted, and is connected to the output side of the main controller (not shown). The main controller controls the operation of the forward and reverse drive motor 20 according to the detection signal of the control sensor 33. The control sensor 33 is for controlling the forward and backward distance of the auxiliary scaffold 30, for example, generates a pulse in accordance with the proximity of the magnet and a plurality of magnets installed at a predetermined interval on the outer circumference of the drive wheel 22. It consists of a sensing element to transmit a sensed signal to the main controller, the main controller determines the moving distance of the auxiliary scaffold 30 in response to the number of detected pulses to control the forward or backward distance of the auxiliary scaffold 30 I can do it.

As described above, the forward / reverse drive motor 20 is controlled by receiving the control signal of the main controller. At this time, the main controller outputs a signal for controlling the operation of the forward / reverse drive motor 20 using the signal of the sliding door switch as an input signal. Done. In addition, the sensor box 34 outputs a control signal using the detection signals of the abnormality detection sensor 31, the braking sensor 32, and the control sensor 33 as input signals.

When the open / close signal of the door is applied from the sliding door switch, the forward / reverse drive motor 20 starts to rotate in the forward or reverse direction under the control of the main controller. Accordingly, the drive wheel 22, the driven wheel 23, and the chain 24 are controlled. ) And the auxiliary scaffold 30 moves forward or backward in the vehicle width direction.

In front of the auxiliary scaffold 30, when the auxiliary scaffold 30 is moved in the direction protruding to the outside of the vehicle body, a safety sensing rod 35 that is reversed when an external object comes into contact is installed, and the safety sensing rod 35 is installed. At one side of the) is installed an abnormality detection sensor 31 for detecting the reverse of the safety sensor rod 35, the auxiliary scaffold 30 is pulled out and detects the contact with an external object to stop the operation of the drive motor 20 In this way, the appearance of the auxiliary scaffold 30 is stopped or retracted.

As described above, the present invention can increase the convenience of use by automatically expanding or closing the auxiliary footboard safely or automatically by the operation of the automatic / manual switch by interlocking with the door switch detecting the sliding door opening and closing. By detecting external objects, safety accidents can be prevented.

On the other hand, in order to prevent accidents caused by scaffolding when children get off, the scaffold unfolding is performed with the stop switch of the auxiliary scaffold switch on, the parking brake pulled (vehicle stopped), and the front passenger's sliding door open. When satisfied, the scaffold is normally spread out.

Figure 4 is a view for explaining the pull-in state of the child stool bus auxiliary footrest device of the present invention, Figure 5 is a view for explaining the withdrawal state of the child stool bus auxiliary stool device of the present invention.

In the unfolding operation of the auxiliary scaffold according to the forward drive of the forward and reverse drive motor 20 by the main controller (not shown), it is operated normally by pressing the stop switch, pulling the parking brake and opening the passenger seat sliding door. When the driver presses the manual switch of the auxiliary scaffold switch and presses the spread switch, the forward / reverse drive motor 20 is driven by the control sensor 33 to unfold the auxiliary scaffold 30.

That is, when the sliding door of the vehicle is opened, the main controller detects this and drives the forward / reverse drive motor 20 forward, and in conjunction with this, the auxiliary footrest 30 moves forward of the vehicle body based on the vehicle width direction.

In this process, the auxiliary scaffold 30 is stabilized to the left and right balance of the auxiliary scaffold 30 while preventing sudden movement by the configuration coupled to the cylindrical shaft 28 via the slide pedestal (30c) and the slide block (36). Is maintained.

When the auxiliary scaffold 30 is completely protruded from the case 10, the control sensor 33 in the case 10 detects it and transmits it to the main controller, whereby the main controller is a forward / reverse drive motor 20. Stopping the rotation of the auxiliary scaffolding 30 is finished.

On the other hand, during the manual closing operation of the auxiliary footrest when the driver's sliding door is completely closed and the driver presses the closing switch of the auxiliary footrest switch, the forward and reverse driving motor 20 is driven in the reverse direction by the main controller so that the auxiliary footrest 30 is closed. This operation is independent of the parking brake's operating condition.

That is, when the sliding door of the vehicle is closed in the state where the boarding is completed, the forward and reverse drive motor 20 is driven in the reverse direction, the auxiliary scaffold 30 is retracted, that is, the case 10 is introduced into the inside, and the control sensor 33 and When the braking sensor 32 detects the auxiliary scaffold 30, the main controller terminates the retraction operation of the auxiliary scaffold 30.

When the auxiliary scaffold 30 hits an external object when protruding in the outward direction, the safety sensing rod 35 is exposed to the outermost side of the auxiliary scaffold 30 so that it is first subjected to pressure in the rearward direction by the external object. In connection with this, the abnormality detection sensor 31 detects a collision and inputs it to the main controller so that the main controller stops the appearance of the auxiliary footrest 30.

As described above, the present invention transmits the power generated by the stationary driving motor 20 to the auxiliary scaffold 30 in a chain manner to draw the auxiliary scaffold 30 outside or to the inside of the vehicle body, and at this time, the auxiliary scaffold 30 The slide is supported by the cylindrical shaft 28 through the slide block 36 coupled to the auxiliary scaffold 30 can be smoothly moved forward or backward as well as securely supported.

Figure 6 is an open state diagram for explaining the auxiliary scaffolding device for children's school bus according to another embodiment of the present invention. The auxiliary scaffolding device shown in FIG. 1 is an embodiment suitable for use when the width is narrow to within 450 mm, for example, and the embodiment shown in FIG. 6 is an auxiliary scaffold safely when the width of the auxiliary scaffolding device is wider than 450 mm. As an embodiment capable of supporting 30, the rails 17 are installed on both sides of the lower cover 10a of the case 10 in the direction in which the auxiliary scaffold 30 moves forward and backward, and both sides of the auxiliary scaffold 30 There is a structure in which a bearing 19 that can move along the rail 17 is further installed.

Accordingly, the auxiliary scaffold 30 of the embodiment shown in FIG. 6 is slidably supported on the cylindrical shaft 28 through the slide block 36 at the lower middle portion, and at the edges of the rails through bearings 19 at both edges. By being slidably supported by 17), it is firmly supported even when receiving a vertical load downward by the passengers, so that the passengers can safely get on or off.

Auxiliary scaffolding device for a children's school bus of the present invention is not limited to the described embodiments, and various modifications and variations can be made without departing from the spirit and scope of the present invention to those skilled in the art. Self-explanatory Therefore, such modifications or variations will have to belong to the claims of the present invention.

10: case 17: rail
19: bearing 20: drive motor
28: cylindrical shaft 30: auxiliary scaffold
36: slide block 22: drive wheel
23: driven wheel 31: abnormality detection sensor
32: braking sensor 33: control sensor
35: safety detection rod

Claims

A case 10 forming an exterior and accommodating the following members in an inner space;
Auxiliary scaffold 30 is installed to be able to pull in and out of the case 10,
Forward and reverse drive motor 20 for generating power for the intake and take-out of the auxiliary scaffold 30,
Drive wheel 22 coupled to the rotational shaft of the forward and reverse drive motor 20 and the driven wheel 23 corresponding to the drive wheel 22, and coupled to the drive wheel 22 and the driven wheel 23, The power transmission member is composed of a chain 24 is fixed to one side of the auxiliary scaffold 30, the driving wheel 22 and the driven wheel 23 are respectively disposed in front and rear lower side of the auxiliary scaffold 30,
Slide blocks are formed in the through groove is fixed to both sides of the bottom of the auxiliary scaffold 30,
A child made of a cylindrical shaft 28 which is fixed to both sides in the front and rear direction in the case 10 and the slide block is slidably coupled through the through groove to support while supporting the forward and backward movement of the auxiliary footrest 30. Auxiliary scaffolding device for school bus.

The method of claim 1,
On the bottom surface of the auxiliary scaffold 30, slide supports 30C made of metal are fixed to both sides along the front and rear directions, and the slide blocks 36 are fixed to the slide supports 30C, respectively, so that cylindrical shafts 28 on both sides are fixed. And slidably coupled with, the auxiliary footrest device for children's school bus, characterized in that it is reinforced to prevent deformation of the vertical load of the auxiliary footrest (30).

The method of claim 1,
The auxiliary scaffold 30 is provided with a safety sensing rod 35 to be reversed when contacted with an external object during the forward unfolding operation, and detects the reverse of the safety sensing rod 35 on one side of the safety sensing rod 35. The abnormal detection sensor 31 is installed, the child's school bus, characterized in that when the auxiliary footrest 30 is in contact with the external object to stop the forward operation based on the detection signal of the abnormal detection sensor 31 Auxiliary scaffolding device.

The method of claim 1,
A plurality of magnets are installed on the outer circumference of the driving wheel 22 at predetermined intervals, and one side of the case is provided with a sensing element for generating a pulse according to the proximity of the magnet and transmitting the main controller to the main wheel. The auxiliary scaffolding device for children's school bus, characterized in that it is configured to control the forward or backward distance of the auxiliary scaffold 30 by determining the moving distance of the auxiliary scaffold 30 corresponding to the number.

The method according to any one of claims 1 to 4,
Rails 17 are installed at both sides of the case 10 in the direction in which the auxiliary scaffold 30 moves forward and backward, and both sides of the auxiliary scaffold 30 have bearings 19 that can move along the rail 17. Further installed, the auxiliary scaffold 30 is slidably supported on the cylindrical shaft 28 via the slide block 36 at the lower middle part and slidable on the rail 17 through the bearing 19 at both edges. Auxiliary scaffolding device for children's school bus, characterized in that the support.