JP4247907B2 - Escalator cart - Google Patents

Description

The luggage cart or wheelchair of the present invention is placed on an escalator and moves to an upper floor or a lower floor, and is fixed to the escalator in a fixed state and keeps the loading platform or the seat horizontal in the escalator.

In general, wheelchairs and carts entering escalators are dangerous and prohibited, but it is far safer than wheelchairs and carts to move up and down the stairs when moving up and down. . The escalator cart does not need the power required for vertical movement compared to the stair lift, but when the stair lift moves up and down the stairs, it is necessary to consider the problem that the left and right wheels do not roll up at the same time. Absent. The terrain of the escalator is concave upward at the ascending exit and convex upward at the descending exit, and the vehicle body is supported at both ends at the ascending exit, but at a balance with one point at the exit. In the process of fixing the car body from the balance state to the slope of the stairs at the exit, the stair climbing vehicle moves close to jumping, but the escalator cart does not move but it only has to adapt to the change in the topography under the cart, so the processing Is relatively safe. As for the conventional escalator cart, there is a slidable portion of the front and rear portions so as to slide with respect to the step corner of the escalator at the bottom of the vehicle, and the vehicle body is supported by the step corner (for example, see Patent Document 1). There was a risk of falling because the vehicle body tilted in the escalator, and there was a risk of spillage because the loading platform was small and there was no device to level the loading platform for a long vehicle length. Moreover, the problem of the balance state on the upper floor is not solved. The present invention eliminates these drawbacks and devise various types of horizontal support devices for the cargo bed that perform the same function in both the ascending and descending directions. The structure is further simplified and many functions can be combined into one cart. It is to be incorporated.
6-60576

Luggage carts are designed to eliminate spillage accidents by leveling the loading platform in the escalator and to eliminate caregivers and instructors around the escalator. Wheelchair users use escalators without care in the station premises. It is intended to move up and down and move up and down the train without difficulty over the steps and gaps created between the platform and the train.

The device is powered by human power without power, and it is lightweight and small. There are no switching devices such as sensors and clutches, so there is no accident caused by their malfunction.

Unlike elevators, escalators are installed along the flow line of people and process a large amount of people continuously, but people carrying carts, shopping cart shoppers, and disabled people in wheelchairs Is currently unavailable. The emergence of escalator-specific carts for airports and mass merchandisers not only improves the operation of airports and mass merchants, but also improves the design of buildings and has a great economic effect. It is not only convenient for people with disabilities, but also helps people with disabilities to participate in the community.

BEST MODE FOR CARRYING OUT THE INVENTION

In the escalator, the topography under the car body changes from a horizontal plane to a staircase, and the topographic change under the cart pushes up the loading platform to level the loading platform, but the topographic change under the cart is not as great as you expect. A method of pushing up the rear part of the loading platform through the like is not effective. The body is deformed in the escalator, and the loading platform moves accordingly, and it is more effective to level the loading platform, and the problem of the balance state on the upper floor is also solved.

In considering the problem of putting a cart in an escalator, it is not possible to find a more accurate and effective solution unless we observe exactly what happens in the escalator and discover where the problem is.

Prior to the description of the drawings, basic movements and phenomena in the escalator of the cart of the present invention will be introduced.
Figure 1 introduces the phenomenon that the level of the loading platform is maintained in conjunction with the deformation of the vehicle body without power, and there is a contradiction in that it deforms due to the stepped topographic change under the vehicle body but does not deform due to the load on the loading platform 2 Introducing a car body that satisfies three elements. FIG. 2 and FIG. 3 introduce the phenomenon that the cart settles on the escalator, and FIG. 1 and FIG. 4 show how the cart escapes from the escalator. FIG. 3 illustrates various structures and their functional features.
Next, the drawings will be described.

FIG. 1 shows an example of an airport cart dedicated to ascending. As shown in FIG. 1 (b), the caster wheel C on the handle side enters after the fixed wheel A at the ascending entrance of the lower floor. (C) The caster wheel C enters at the lower entrance of the upper floor shown in the figure, and the fixed wheel A on the handle side enters later. In other words, the handle side and the caster wheel are lower than the fixed wheel for both ascending and descending, and in a wheelchair equipped with a chair indicated by a dotted line instead of the loading platform, the back is always directed upstairs. (In the case of a wheelchair transporter, the back is always used with the back facing up).

First, a mechanism for keeping the loading platform 1 horizontal without relying on power even if the cart of the present invention is tilted in an escalator will be described.
(B) As shown in the figure, the top of the cart seems to be lifted at the entrance and the rear part of the loading platform 1 is lifted, but it is considered that the cart on the virtual horizontal planes X1 and X1 sank the rear part C of the vehicle body. Is the same. (Which is also the state of the upper floor exit gate of the cart (cart opposite use of the cart of Figure 1) to the beginning of the castors C in FIG. 2 ((c) Figure).) In this case, the loading platform 1 on any of the Since each point is always lowered in altitude, no power is required for the phenomenon that the rear part of the loading platform appears to lift. (D) As shown in FIG. 2 (d), the cart is lowered at the entrance, and the rear of the loading platform seems to sink. However, the cart on the virtual horizontal planes X1 and X1 raised the rear of the vehicle body (FIG. 2). This is the same as the state of the lower floor riser of the cart headed by the caster (Fig. (B)), or the result is that the cart on the virtual horizontal planes X2 and X2 raised the front of the vehicle body. However, in this case, it seems as if the rear part of the loading platform is lowered, but since each point on the loading platform is always raised, the loading platform raised after the cart escapes from the escalator goes down and returns horizontally.

The escalator cart in which the vehicle body of the present invention is folded in two at the center should not be deformed by the load on the loading platform even if it is deformed by the stepped topographic change under the vehicle body. In FIG. 1, (a), (b), and (c) are carts for exclusive use in the ascending direction, and (d) is a cart for both raising and lowering. In the cart for exclusive use in the ascending direction, even when the upward bending deformation is allowed at the connection point R connecting the loading platform and the front half 2 and the rear half 3 of the vehicle body, the downward bending deformation is prevented by hitting. The cart for lifting and lowering does not hit the connecting point R as shown in FIG.

Consider a cart dedicated to ascending direction. Arbitrary load on the loading platform PQ applies a horizontal component force to the node Q, and the front half of the vehicle body rotates around the connection point R in a downward bending deformation direction. Is done. (A) The vehicle body is supported by the front and rear wheels AC and the connection point R at the center of the vehicle body is fixed in a straight line and floats in the air during traveling on flat ground shown in the figure. Therefore, the deformable quadrilateral PQRS becomes a triangle PQS that does not deform. (B) As shown in the figure, when the vehicle body is bent upward at the connection point R, the wand PS rotates in the rising direction and the horizontal component force applied to the node Q is reduced.

In the cart for both lifting and lowering, bending deformation that is convex upward and downward at the connecting point R is allowed, so the quadrilateral P′Q ′ R ′ S ′ is not deformable and does not become a triangular P′Q ′S ′ that is not deformable. Although a horizontal component force is applied to the node Q ′ by an arbitrary load on the loading platform P′Q ′, there is a problem that the front half of the vehicle body rotates around the connection point R in the cart for both lifting and lowering. This is one of the problems that the cart for lifting and lowering has. (D) In the figure, the quadrilateral PQRS is a quadrilateral that is a slightly collapsed parallelogram. This quadrilateral is a quadrilateral that is deformed by a stepped topographic change under the vehicle body and is not deformed by a load on the loading platform. The quadrilateral P´Q´R´S´ is a quadrilateral that is based on a slightly broken parallelogram, and is good for holding the loading platform horizontally. It is not a rigid quadrilateral that does not deform to stop the movement that is going to go. (D) In the figure, when concentrated load is applied outside the loading platform P′Q ′, the outer A or C is lifted, and when concentrated load is applied to P ′ of the loading platform, the intermediate wheel B is lifted. The quadrilateral P′Q′R ′S ′ becomes a solid quadrilateral that is not deformed by the load on the cargo bed by lowering the height of the cargo bed P′Q ′. Establishing a solid quadrilateral is an important task when designing a cart for lifting and lowering.

Next, a description will be given of a mechanism that, when the cart according to the present invention enters the escalator, will finally be stably fixed at a certain position regardless of the position (b) When entering the ascending direction as shown in FIG. In the final stage, the head wheel A is stably fixed with the leading wheel A in close contact with the kick. When the head wheel is in close contact with the kick when entering, the reverse L-shaped rotating member in the front (hereinafter referred to as “ Haneteko ” ) works invalidly. At the moment when the wheel of the car falls to the lower stage, it settles stably in close contact with the kick. The leading wheel falls to the lower stage with a relatively large drop, but the impact at that moment is mitigated because Haneteko pulls the loading platform forward and lifts the rear of the loading platform with the wedge effect.

(C) The figure shows the state of the upper floor exit when the cart dedicated to the ascending direction is lowered to the lower floor, and the state of sliding along the sliding surface at the bottom of the car body is left to the natural phenomenon of dropping due to its own weight. Indicates. (D) Even in the cart for lifting and lowering shown in the figure, it moves to the lower step by the natural phenomenon of falling due to its own weight at the upper floor exit and settles, but in this case it can move based on the forward tilt of the front half of the car body, Since 6 works in the direction of pushing up the rear part of the loading platform, the loading platform tilts forward, the load slides on the loading platform 1 and moves to the tip, leading to an accident in which the entire cart rolls forward. In order to prevent this, an outrigger is required in the front, and the front lever tilts forward as shown in FIG. Adverse effects Hotsue 6 in cart lift dual deploying the Hotsue 6 back is also observed when moving in opening down floors on shown in (b) FIG cart riser direction only (c) Figure In carts with a cane at the top, such as when the cart is lowered to the lower floor, the cane rotates in a direction to keep the loading platform horizontal, and the cart falls to the lower stage while keeping the loading platform horizontal. FIG. 2 shows a cart in which the wand 6 is deployed at the head in the reverse use vehicle of FIG.

(D) The figure shows an example of a shopping cart. The vertical support of the loading column support 22 is required, and the center of gravity of the load in the car 23 needs to be brought to the center of the cart. The car is attached to the two arcuate long holes 25 in a suspended state and can be tilted to the left and right. The center of gravity of the load is always between IJ and does not tilt the column 22 .

Next, the escape from the cart escalator is described. At the upper floor exit in the ascending direction, the cart at the upper level must be pushed out from the step lowered by one step, and at the lower floor exit at the lower direction, the cart at the lower level must be pushed out from the step raised by one step. At the exit, the cart can be pushed out from the same level of scaffolding for an instant, and if this timing is removed, the cart stopped without pushing out the cart will block the exit. If the escalator does not stop when the cart that does not go out is blocking the exit, it will lead to a stop accident, and in the case of the exit, the escalator will push in with the step up, so the escalator will collapse and collect the crowd of people who have piled up As a result of crushing with a press, the escalator, especially narrow, has a risk of a major accident because the outlet is completely blocked. In order to prevent an exit stop accident, an automatic stop device is required to detect an emergency stop when an object or person passing through the exit step becomes stationary, and the cart of the present invention has an end plate at the exit. It is necessary to prevent the escalator from being stopped by stopping and automatically stopping the escalator. The escape device of the present invention is in a state where the cart is braked in the escalator and the step is gripped, and the cart never moves backward. This escape device is not necessary for traveling on flat ground and is released at the same time as the escape and returns to the original state by passing through the step of the end plate.

(E) and (f) are detailed views of the rear automatic escape device. The arm with the spiral wheel 14 attached to the tip rotates in conjunction with the bending deformation of the vehicle body and supports the vehicle body 3 instead of the rear wheel. (E) The figure shows a series of movements that rotate in conjunction with the bending deformation of the vehicle body when traveling on flat ground. (F) The figure shows a series of movements rebounded to the ending plate 46 when escaping. (E) In the figure, the rotation of the arm is completed before the completion of the bending deformation of the vehicle body, and the spiral wheel rotates in the direction of decreasing its radius. Therefore, even if the spiral wheel 14 is grounded, the rotation of the arm is not stopped. The grounded spiral wheel acts as a brake and has no effect on the progress of the vehicle body, and when the vehicle body moves backward, the spiral wheel rotates in the direction of increasing its radius, so that the vehicle body is lifted. This state is a state where the user can easily escape by pressing a little. Since the arm is fixed by the toggle spring 27, the state where the spiral wheel is grounded is not released until it is bounced back to the ending plate at the time of escape. Also, as shown in (f), when the spiral wheel stops in front of the ending plate, it rotates in a direction that lifts the vehicle body on the flow in the storing direction of the step, so that the cart cannot escape and remains inside the escalator. Never do.

Figure 2 is a caregiver is better wand 6 intended to use a cart in the opposite direction shown in FIG. 1 (d) is at the top side in the wheelchair lift amphibious put push on the escalator. (B) As shown in the figure, the rising of the vehicle body on the caster wheel C side does not directly increase the tip of the seat 24, so the seat appears to be lowered, and (c) the vehicle body on the caster wheel side is lowered as shown in FIG. Since the minute does not move down the seat tip as it is, the seat appears to be raised.

(B) The figure is a state diagram of the upper entrance of the lower floor (c) The state diagram of the lower entrance of the upper floor. At the entrance of the escalator, there are no steps in the first two steps, and steps are gradually formed in the steps ahead of it, and the stairs are formed in front of it. When the wheelchair settles, the top caster wheel C always drops a large step, and the subsequent fixed wheels A and B only move between steps with few steps, even if the footrest moves up and down. There is little movement of the seat. In addition, the lever rotates in the direction that keeps the seat horizontal when falling down.

The cart with the caster wheel at the top has a difficulty in that the caster wheel stumbles on the ending plate 46 at the exit, but the fixed wheel has a reverse rotation prevention device. (A) The swirl wheel 14 shown in FIG. The caster wheel can be pushed out easily.

The caster wheel C and the connecting part wheel B are two wheels which are not on the same step and set the inter-vehicle distance so as to always extend over two steps. It cannot be placed in place when the cart is placed in the escalator. (B) If the connecting part wheel does not adhere to the kick during the ascending approach as shown in the figure, the vehicle body is moved backward with a banquet, and (c) the last wheel does not adhere to the kick during the descending entry as shown in the figure. In such a case, the vehicle will move forward due to the fall of the connecting part due to its own weight, and finally take a fixed fixing posture.

Finally, the fixed fixing state is a state in which the connecting portion wheel B is on the step when ascending as shown in FIG. The three wheels A, E1, and B constituting the fixed wheel are all on one step, and when moving to the lower stage, it is necessary to move to the lower stage without leaving all, and (a) If three wheels are included in a part of the large-diameter wheel D1 shown, the three wheels will move as one wheel.

Movement during the down is not rely on forced movement by wings lever 10 as upon upstream, not to rely on natural drop due exclusively to its own weight. In addition, the movement of all the wheels must be completed quickly before the level difference becomes sensitive and sensitive. (D) The wheel shown in (e) and (f) is an assembly having a structure in which strip-shaped wheels E1, E2, and E3 having a part of arcs D1 and D2 of large-diameter wheels are filled between the wheels L and N. These move as one fixed wheel, and show a motion in which all the fixed wheels made up of a plurality of wheels do not remain but drop to the lower stage. (FIG. 3 is a cart having a structure in which a connecting wheel is housed in a large-diameter wheel during movement and moves as one wheel.)

(D) The wheel of (e) is composed of a large wheel M at the center and two small wheels LN on both sides thereof. The wheel L at the front end is a front wheel that supports the head of the loading platform, and the wheel N at the rear side is the vehicle body. It is a connection part wheel which supports the connection part which connects a front half and a rear half. (In the ascending exclusive vehicle shown in FIGS. 1 (a), (b), and (c), the hitch is attached so that the vehicle body only folds upward and does not fold downward.

A description will be given of a phenomenon in which the three fixed wheels do not remain and fall to the lower stage when the step corner is located between the large wheel M at the center of the fixed wheel and the small wheels L or N on both sides thereof when entering. For example, when explaining only at the time of ascending, as shown in (d), if only the connecting part wheel N does not remain, the entire vehicle body is moved backward only by the front fly, and (e) only the leading part wheel remains as shown in the figure. In this case, the vehicle body retreats without slightly tilting from the horizontal only by slightly rotating the wheel E1 (a part of the large-diameter wheel D1 indicated by a broken line). (F) As shown in the figure, when a plurality of large-diameter wheels D1, D2, D3 are arranged between the two wheels LN, when the step corner hits the bottom of D1, the corner of the step is moved by a slight rotation of D1. It can be sent to the bottom of D2, and further the corner of the step can be sent to D3 and further to wheel N. (F) In the figure, instead of the large-diameter wheels D1, D2, and D3, strips E1, E2, and E3 that are part of the large-diameter wheels D1, D2, and D3 are suspended and arranged, which is useful for lowering the floor of the cart. .
One of the problems that both vehicles have is the anchorage problem at the entrance. At both the ascending and descending exits, the movement leading to the establishment of the cart is a drop to the lower stage. It is a retreat at the ascent and advancing at the descending. At the ascending entrance, only the step advances rather than the cart moving backward, and the cart is stopped and only moves up and down, but at the descending entrance, the cart is carried by the step at the same time as entering the cart and falls further by moving forward. Accelerated. Aggressive movement is required to avoid falling over large steps, but it is also necessary to stop the cart without accelerating.

FIG. 3 shows the final fixing state at the bottom of various lifting vehicles equipped with a lifting device for the loading platform at the rear, but consider the fixing problem at the entrance of each lifting vehicle. Figure (a) shows a front / rear car with a plurality of fixed wheels, but the connecting wheel N is attached not to the front half of the car body but to the car body for the latter half, and the car body front half leans forward when starting to move downward. The connecting portion wheel N is housed in the large-diameter wheel M and moves as one wheel. As shown in FIGS. 2D, 2E and 2F, there is no need for a strip-like wheel between the large and small wheels. Moreover, since a connection part wheel comes out of the large diameter wheel M so that the large diameter wheel M may be pushed out after falling to a lower stage, a movement is completed before a level | step difference grows. The figure (b) is a rowing wheelchair and employs the large-diameter wheel M as the connecting part wheel in the figure (a). Since the large-diameter wheel moves even with a small step and does not move from the moved step, the rowing wheelchair ends its movement to settling as soon as it enters. Therefore, a feeding device that forcibly moves the cart is unnecessary. The figure (c) is fixed at a position where it has entered almost without movement in a cart with two wheels that are not placed on the same step at the same time, straddling two steps.

The getter J, which supports the connecting portion instead of the wheel N when the ascending / descending vehicle in FIG. 3 (a) ascends, is accommodated in the circle of the large-diameter wheel except when ascending, and the connecting portion is replaced with the wheel N when descending. The supporting getter K is free to rotate around the suspension source I, and also acts as a feeding device when forcibly moving down one step at the ascending entrance.

The rowing wheelchair in FIG. 3 (b) has an aerial outrigger that turns 90 ° in the air above the handrail in conjunction with the bending deformation of the car body. If the cart falls down to the lower floor, the outrigger will be on the handrail. Prevents catching and falling. Even if you can use an escalator in the station, there is no point if you can not go up and down the steps at the entrance when you get on the train. When the lever at hand is pushed in the direction B, the trailing spiral wheel indicated by the dotted line rotates in the direction B, and the radius gradually increases, so the cart can be pushed up and moved forward. it can.

The cart shown in FIG. 3 (c) has two wheels straddling two steps at the top, and moves to a position where it is finally stably fixed immediately after entering. Since it spans steps, horizontal holding is not good. The fulcrum on the front side of the loading platform is in the middle of the top two wheels, and since the height H from the step surface is the same as when traveling on flat ground when climbing, it does not adversely affect the level of the loading platform in the ascending escalator. The fact that there is a loading platform fulcrum in the middle of the top two wheels is to extend the length of the loading platform forward, but there is an advantage of moving the loading platform greatly back and forth because the top two wheels rotate greatly by placing it at the entrance and exit. It is effective for leveling the loading platform. The connecting point of the cart in FIG. 3 (c) is at a high position on the loading platform side, and the slope in the long hole at the low position on the ground side moves greatly, and the wheels supporting the rear portion of the loading platform run up and down in the slope, and the rear of the loading platform. Move up and down. (When the connecting point is at a low position on the ground side as in the cart of FIG. 1, the fulcrum S of the wand at a high position on the loading platform side moves greatly and moves the rear portion of the loading platform up and down.)

The cart in FIG. 3C is different from other carts and is the only cart that is deformed by receiving external force. The upper floor entrance and exit staircase shape is convex upward and the cart is supported at a single point in the center, and the lower floor entrance and exit staircase shape is concave upward and the cart is supported at both ends. The cart is not bent by the escalator simply by bending due to its own weight at the upper floor entrance and in the escalator. If the top two wheels are added as in the cart of FIG. 3 (c), the top wheel is lifted by the escalator at the lower floor entrance and the top two wheels rotate greatly, so the platform is moved back and forth and the rear of the platform at the ascending entrance At the exit / exit, it is possible to pull up the rear part of the cargo bed that has been lowered at the entrance / exit, and deform due to external force.

FIG. 4 shows a wheel attached to a rear caster wheel. A circular collar attached to both sides of the wheel is a disk having a hole having a diameter larger than that of an axle, and a hexagonal disk is attached to the outside. The two flanges on both sides of the wheel are always spaced so that one of them fits into the step groove, one side of the hexagon contacts the ground, and the rotation stops. Further, since the rotation axis is displaced from the axle, the rotation of the axle and the wheel is stopped. The wheel in FIG. 4 is braked and fixed to the step at the same time as touching the step, so that the portion in front of this wheel at the exit is discharged from the escalator. In other words, the cart is ejected while on the step, and the cart is escaped without any operation.

(A) shows a state in which the hexagonal wheels on both sides do not come into contact with ground when traveling on a flat ground, and all the wheels rotate around the same rotation axis. In this state, the rotation axis is shifted vertically. (C) is a side view and (d) is an interior view of a frame for mounting wheels.

Is an outline guide diagram explaining the outline of the present invention Is an illustration of a wheelchair, Is an illustration of movement at the exit of various carts, Is an illustration of a wheel with hexagonal wheels attached to both sides

Explanation of symbols

(1) Loading platform (2) Front half vehicle body (3) Second half vehicle body (4) Connecting bolt (5) Guide roller (6) moving through the long hole (6) Cane with hinges at both ends (7) Guide roller ( 8) Connecting rod tie rods having hinges at both ends (9) Car body supporting the top two wheels (10) Haneteko (11) Geta (12) per (13) Rubber cushioning material (14) Spiral wheel (15) Caster wheel (16) Large-diameter wheel (17) Connecting wheel (18) Wheel (19) Rotating shaft of wheel (20) Handle (21) Push lever (22) Cargo post (23) Basket (24) Chair (25) Arc Long hole (26) long hole (27) tension spring (28) sheath tube (29) wire (30) outrigger (31) push spring (32) ground (33) ) Kick part of escalator (34) Scalator tread part (35) Escalator step corner (36) Escalator handrail (37) Escalator step groove (38) Wheel fixed with axle to key (39) Three blade fixed with key to axle External gear (40) Hexagonal disc (43) attached to disc flange (42) (40) attached to cylinder (41) (40) provided with internal gear of groove in 6 places (44) (43) Attached to the guide (45) (43) attached to the outer diameter of the guide (45) (43) bearing (46) end plate → direction of movement ⇒ direction of revolution

Claims (3)

It consists of four members: a loading platform, a front half of the vehicle body, a rear half of the vehicle body, and a wand that connects the loading platform and the rear half of the vehicle body, and the front half of the vehicle body and the rear half of the vehicle body A link device in which the configured vehicle body supports the cargo bed from below,
The front half of the vehicle body and the rear half of the vehicle body are rotatably connected by a connecting shaft, and the front end of the loading platform is rotatably connected to the connecting shaft in front of the front half of the vehicle body, and the rear end of the loading platform. The connecting shaft on the rear half of the rear half of the body of the part is a link device structured to be connected via the wand,
Used for escalator carts, characterized in that the vehicle body is bent upwards or downwards with the above-mentioned connecting shaft as the center due to the stepped topographic change under the vehicle body, and the loading platform linked to the deformation of the vehicle body is kept approximately horizontal. Link device. In the escalator, the front half of the vehicle body is on a single step and is substantially horizontal, and the rear half of the vehicle body extends over two steps, the one step and one step below or one step above. 2. The link device used in an escalator cart according to claim 1, wherein the loading platform that is inclined and stationary and that is interlocked with the deformation of the vehicle body is kept substantially horizontal . A escalator cart comprising a link device according to claim 1 or claim 2 wherein, escalator carts characterized the front of the first half of the body, and the vicinity of connecting portions, to support the wheel and a rear half backward.

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