JP2579978Y2 - Escalator cart - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an escalator cart which can be moved up and down while being loaded on an escalator, in addition to carrying and traveling cargo on flat ground.

[0002]

2. Description of the Related Art Conventionally, a front wheel of a caster is equipped with a front wheel of a caster, a rear wheel is provided at a rear portion of the body, and a lower surface of the vehicle is supported by a plurality of step corners of an escalator. 2. Description of the Related Art A hand-operated transport vehicle capable of moving up and down as it moves up and down is known, for example, from Japanese Utility Model Laid-Open Publication No. 1-168359. In this prior art hand truck, there is no problem in carrying work on flat ground. However, when the vehicle body is put on the escalator step, the front and rear substantially predetermined positions on the lower surface of the vehicle body are divided into plural (two) steps. It has a structure to be supported at corners, and a plurality of rake rollers used when the vehicle body is lowered from a step are provided.

[0003]

As described above, when the vehicle body is mounted on the escalator step, if the front and rear substantially predetermined positions of the lower surface of the vehicle body are supported by a plurality of (two) step corners, Since the escalator comes in continuous contact with the escalator steps that move continuously, it is necessary to increase the length of the vehicle body to maintain a substantially constant support state, and there are problems such as poor work efficiency. . Also,
Providing a plurality of rake rollers used when the vehicle body is lowered from the step has a problem that the structure becomes complicated and the cost increases. The present invention has been made to solve the above problems.

[0004]

Means for Solving the Problems To achieve the above object, the present invention provides: (1) a vehicle body having a steering wheel, a front wheel is provided at a front portion and a rear wheel is provided at a rear portion; In the escalator cart, which is supported by a step and moves up and down as the escalator moves up and down, the escalator step is located at both front and rear positions excluding an engaging portion extending over a substantially predetermined length at a longitudinal center portion of the lower surface of the vehicle body. A front sliding portion and a rear sliding portion that are slid with respect to the corner portion are formed; (2) a step portion is formed at a front end portion of the front sliding portion;
Respectively.

[0005]

According to the present invention, the front sliding portion which slides with respect to the step corner of the escalator is provided at both front and rear positions excluding an engaging portion which extends over a substantially predetermined length in the longitudinal center portion of the lower surface of the vehicle body. Since the rear sliding part was formed, when placing the vehicle on the escalator step,
When the step corner comes into contact with the front sliding portion or the rear sliding portion, it slides and stops at a substantially fixed position, and the vehicle body is centered on the substantially predetermined length engaging portion at the center in the longitudinal direction of the lower surface of the vehicle body. The front and rear portions are in contact with the steps of the escalator, and are not engaged at random, but are supported by a large number of support forms so that they can move up and down efficiently and stably. Further, since the step portion is formed at the front end portion of the front sliding portion, the vehicle body is stably supported with respect to the step of the escalator, and it is not necessary to lengthen the vehicle body.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be specifically described below with reference to the accompanying drawings. 1 to 3, reference numeral 1 denotes a body of a cart (push cart). The body 1 is provided with handle posts 2 on both sides of a rear portion thereof, and a push handle is provided between upper ends of the posts 2, 2. 3 are provided. A front part of the vehicle body 1 is equipped with a pair of left and right front wheels 4 and 4 formed of casters, and a pair of right and left rear wheels 5 and 5 is provided on both sides of the rear part of the body 1. Further, the vehicle body 1 is formed in a tapered shape in which the front side is narrow and the rear side is wide in plan view,
A plurality of carts can be stacked back and forth from the space between the handle columns 2 and 2 toward the front of the vehicle body, so that the parking space can be reduced.

A gate-shaped front frame 6 is provided on the front upper surface of the vehicle body 1.
It is provided so as to be rotatable back and forth about the fulcrums 6a, 6a, and stands up substantially vertically in a use state, and turns and folds toward the vehicle body 1 in a storage state in which a cart is superposed. Has become. Toggle springs 7, 7 are stretched between the lower end of the front frame 6 and the vehicle body 1 so as to hold the front frame 6 in a standing state and a falling state, respectively. Then, the front frame 6 is set in the upright state, and the front frame 6 and the handle support 2 are set.
Luggage is to be loaded on the bed between the two. A small baggage compartment 8 on which small and light luggage is placed is provided between the upper portions of the handle posts 2, 2. A luggage holding rope 9 is provided between the front portion of the small baggage compartment 8 and the upper end of the front frame 6. Is detachably mounted.

The hand-operated handle 3 also serves as a brake operating lever, and when nothing is in contact with the handle 3, the brake 10 provided behind the rear wheels 5, 5 is applied. When the player rotates the cart downward or upward, the brake 10 is released and the cart can be freely moved forward and backward. When a plurality of carts are stacked back and forth as described above, the handle 10 is rotated upward by a handle portion of another vehicle body which is in contact with the handle 3 to release the brake 10, and the last portion of the overlapped Only the brake 10 of the cart is put on. Therefore, when a plurality of carts are set to the overlapping state and the brake 10 of the last cart is released, all of the overlapping carts can be moved at the same time.

On the left and right sides of the lower surface of the vehicle body 1 at the center in the longitudinal direction, rubber and other cushioning / friction materials are formed, and continuous irregularities are formed so that they can be easily engaged with the corners of the step S of the escalator. The friction engagement portion 11 having a predetermined length is provided. At both front and rear positions of the friction engagement portion 11, that is, both front and rear positions excluding the friction engagement portion 11, the escalator is slid with respect to the corner of step S, for example, by a special resin having lubricity. Part sliding part 12 and rear sliding part 13
Is formed. Further, two step portions 12a and 12b are formed at the front end portion of the front sliding portion 12, and concave portions are formed at the boundary portions between the friction engagement portion 11, the front sliding portion 12, and the rear sliding portion 13, respectively. Is formed. As shown in FIGS. 4 and 5, in both cases when the escalator is raised and lowered, the cart can be moved up and down by supporting a substantially predetermined position on the lower surface of the car body 1 in step S.

At the center of the upper end of the front frame 6 of the vehicle body 1, there is provided a front caution plate 14 made of a flexible material and protruding to a length substantially equal to the tip of the lower portion of the vehicle body. The front caution plate 14 rotates downward and is elastically supported by a spring-loaded hinge so as to be always supported in the state shown in FIG. Even if the lower part of the vehicle body is not visible to the carrier with the luggage loaded on the carrier of the vehicle body 1, the front caution plate 1
4, the position of the front end of the vehicle body can be confirmed to prevent a collision, and also functions as a bumper. further,
When the front frame 6 is folded, it does not become an obstacle.

In the escalator cart according to the embodiment constructed as described above, when a load is loaded on the carrier of the vehicle body 1 and the vehicle travels on a flat ground, the carrier turns the hand push handle 3 slightly upward or downward. By pushing while moving, the brakes 10 and 10 are released and the cart can travel freely to carry luggage. When the carrier returns or pushes the push handle 3 to the middle position between the upper and lower sides, the brakes 10 and 10 are applied, and the vehicle body 1 stops running and does not move unintentionally.

When the cart is placed on the step S of the escalator and moved up and down, as shown in FIGS. 4 and 5, the carrier pushes the cart with the hand push handle 3 and the step of the escalator continuously moving. Put on S at random. The support state of the cart with respect to step S at that time will be described with reference to the case where the escalator and the cart in FIG. 4 are raised. First, when the corner of step S comes into contact with the front sliding portion 12, it is not slipped and engaged, but when the corner of step S comes into contact with the friction engagement portion 11, the cart is supported by the corner of step S. And the front sliding portion 12 has stepped portions 12a, 12b,
Alternatively, the next step S in which the boundary between the front wheel 4 and the front sliding portion 12 is contacted and supported, and
The case of the rear wheel 5 or the brake 10 touches the upper surface of
The cart is supported by three steps S. At this time, it is preferable to keep the brake 10 in the applied state.

When the cart is placed on the step S of the escalator, the center of gravity of the luggage loaded on the carrier moves toward the rear of the vehicle body 1, but the cart is supported by the three steps S. , Especially the last step S
Since the case of the rear wheel 5 or the brake 10 is in contact with the upper surface of the cart and supports most of the total weight of the cart, the cart can be lifted in a stable state. When the cart reaches the rising end of the escalator, the carrier can smoothly move from the escalator by holding the push handle 3 and pushing it out with the brake 10 released. In FIG. 4, four examples of the support state of the cart with respect to the step S of the escalator are shown. However, the support state is not limited to this and is innumerable. In any case, the cart is stably supported and raised. be able to.

When the escalator and the cart descend as shown in FIG. 5, first, when the corner of the first step S comes into contact with the front sliding portion 12, it is not slid and engaged. When the cart comes into contact with the engaging portion 11, the cart descends while being supported by the corner portion of the step S, and the front end portion or the front sliding portion 12 (steps 12a, 12b) of the vehicle body 1 is moved to the upper surface of the front step S. Or it is supported in contact with the corner. Further, the case of the rear wheel 5 or the brake 10 contacts the upper surface or the corner of the next step S in contact with the friction engagement portion 11,
The cart is supported by three steps S. At this time, it is preferable to keep the brake 10 in the applied state.

When the cart is placed on the step S of the escalator, the center of gravity of the luggage loaded on the carrier moves toward the front of the vehicle body 1, but the cart is supported by the three steps S. , Especially the first step S
Of the vehicle body 1 or the front sliding portion 1
2 (steps 12a, 12b) is in contact with the upper surface or the corner of the front step S, so that the cart can be supported and lowered in a stable state. When the cart reaches the lower end of the escalator, the carrier can smoothly move from the escalator by holding the push handle 3 and pushing it out with the brake 10 released. In addition,
In FIG. 5, three support states of the cart with respect to the step S of the escalator are illustrated. However, the support state is infinite, and in any case, the cart can be stably supported and lowered.

As described above, when the cart is placed on the step S of the escalator and moved up and down, the step 1 is attached to the front sliding portion 12.
When the 2a and 12b are formed, they have the property of slipping on the corners of the step S, but are stably supported while being placed on the corners of the step S. Further, when the rear sliding portion 13 comes into contact with the corner of step S, the rear sliding portion 13 does not slip and engage, and the front and rear portions come into contact with step S. In the above embodiment, two front wheels are used. However, the present invention can be similarly implemented by using one front wheel.

[0017]

According to the escalator cart of the present invention as described above, the following effects can be obtained. . A front sliding portion and a rear sliding portion are formed at both the front and rear positions of the lower surface of the vehicle body in the longitudinal direction at the front and rear positions excluding an engagement portion extending over a predetermined length, so as to slide against the step corner of the escalator. When the cart is placed on the step of the escalator that moves up and down, it is stable and efficient with the front and rear parts supported by the step of the escalator, centering on the engaging part at the center of the lower surface of the vehicle body Can be raised and lowered. In addition, it is possible to stably support the movement of the center of gravity of the load caused when the cart is placed on the step of the escalator. Therefore,
There is no need to lengthen the vehicle body more than necessary.

[0018] Since the step portion is formed at the front end portion of the front sliding portion, while having the property of sliding on the corner portion of the step or the front sliding portion, it is stable in a state where the step portion is placed on the corner portion of step S. Can be supported. Further, when the central portion in the longitudinal direction of the lower surface of the vehicle body moves in contact with the step corner of the escalator, the front sliding portion can smoothly contact and support the front step.

[Brief description of the drawings]

FIG. 1 is a side view of an entire escalator cart according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a rear view of the same.

FIG. 4 is a side view when the cart is placed on an escalator and raised.

FIG. 5 is a side view when the cart is placed on an escalator and descends.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Handle post 3 Handwheel 4 Front wheel 5 Rear wheel 6 Front frame 6a Support point 7 Toggle spring 8 Small baggage 9 Baggage holding rope 10 Brake 11 Friction engagement part 12 Front sliding part 12a, 12b Step part 13 Rear sliding part 14 Forward caution plate S Step of escalator

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-252064 (JP, A) JP-A-61-235268 (JP, A) Fully open sho 60-1777832 (JP, U) Really open 1988 68 (JP, U) Fully open 1987-70057 (JP, U) Fully open 1986-33,762 (JP, U) Fully open, 62-137167 (JP, U) Fully open, 61-111875 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B62B 5/02

Claims (2)

(57) [Scope of request for utility model registration] An escalator cart having a front wheel and a rear wheel at a front portion and a rear portion, respectively, of a vehicle body having a steering handle, wherein a lower surface of the vehicle body is supported by an escalator step, and the escalator cart moves up and down as the escalator moves up and down. A front sliding portion and a rear sliding portion are formed at both front and rear positions of the lower surface of the vehicle body in the longitudinal direction, except for an engaging portion extending over a predetermined length, so as to slide with respect to a step corner of the escalator. An escalator cart characterized by: 2. The hand truck according to claim 1, wherein a step portion is formed at a front end portion of the front sliding portion.