JP2002301280A - Small approaching device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To achieve a predetermined approaching function while enabling reuse, and to improve its versatility. SOLUTION: A base 2 supported on a plurality of casters 1 rolling on an abyss G, a pair of guide posts 3 erected so as to face the base 2, and a guide post 3 Sprockets 4 held on the upper and lower sides
Chain 7 wound around 5 and moved by appropriate driving means 6
And an elevating floor 9 which can be moved up and down along the guide post 3 by the movement of the chain 7 with the interposition of a connecting means 8 interposed in the guide post 3 while being connected to the chain 7. In the approaching device, the casters 1 are arranged below the four corners 2a in which the base 2 is bent upward, and the lower floor 91 is connected to the lifting floor 9 by the chain 7 and the lower floor 91 is connected to the lower floor 91. Adjusting means which is capable of adjusting the inclined state of the upper floor 92 between the lower floor 91 and the upper floor 92 while being formed in a double floor structure comprising an upper floor 92 stacked with an appropriate gap above the 91. 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an approaching device, and more particularly, to an improvement of an approaching device which can be moved in abyss.

[0002]

2. Description of the Related Art Among approaching devices installed in an abyss below a stage floor of a theater or the like, in addition to a large approaching device having a large elevating floor which allows a large number of people to enter, 2. Description of the Related Art There is a small approaching device provided with a raising and lowering floor having a small area enough to allow two persons to enter.

[0003] The large approaching device and the small approaching device have heretofore been arranged to be fixed in the abyss, but in recent years, the small approaching device may be movably provided in the abyss. .

[0004] That is, the so-called small approaching device has an ascending and descending floor with an area of two tatami mats or one tatami mat, or a half tatami mat. In some cases, a plurality of small approaching devices are provided in the abyss with respect to a single large approaching device.

[0005] At this time, the abyss tends to be a narrow space in view of the provision of the large approaching device, and therefore, it is difficult to arrange a plurality of small approaching devices in this narrow space. However, it has been said that a drawback that the abyss is further narrowed is caused, and that a plurality of small approaching devices are operated, which is disadvantageous in terms of cost.

[0006] In view of the above, various proposals have been made on a small approaching device which is movable so that it can be used repeatedly. For this reason, there are advantages and disadvantages, and a general-purpose device has been proposed. Nothing was the best to expect.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a predetermined approaching function while enabling reusability, and to improve its versatility. It is an object of the present invention to provide a small approaching device which is optimal to be expected.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the construction of the present invention is basically based on a base supported on a plurality of castors rolling on an abyss, A pair of guide posts standing upright to face
A chain wound around a sprocket pivotally supported on the upper side and the lower side of the guide post and moved in a vertical direction by appropriate driving means, and an interposition of a connecting means interposed in the guide post while being connected to the chain. In a small approaching device having a lifting floor that can be moved up and down along with a guide post by moving a chain, casters are arranged below four corners in which the base is bent upward. In addition, while the lifting floor is formed in a double floor structure consisting of a lower floor connected to the chain and an upper floor not connected to the chain and stacked with an appropriate gap above the lower floor. It is assumed that an adjusting means is provided between the lower floor and the upper floor so as to adjust the inclined state of the upper floor.

More specifically, in the above-described configuration, it is assumed that a pair of guide posts are connected to the base so as to be separable, and the upper ends of the pair of guide posts are formed in the opening of the stage floor. If it is fixed detachably to the lower surface of the corridor-shaped adjustment frame fitted in a fixed state,
Furthermore, it is assumed that the upper floor of the elevating floor has a separable corridor-shaped adjustment frame fitted into the opening of the stage floor.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. As shown in FIGS.
Opening S formed in stage floor S located in the abyss below
1 is opened and closed.

The approaching device comprises a base 2 supported on a plurality of casters 1 rolling on the abyss G, and a pair of guide posts 3 standing upright so as to face the base 2. A chain 7 which is wound around sprockets 4 and 5 (see FIG. 1) pivotally supported on the upper and lower sides of the guide post 3 and moves vertically by appropriate driving means 6 (see FIG. 2). An elevating floor 9 which can be moved up and down along with the guide post 3 by the movement of the chain 7 with the interposition of a connecting means 8 interposed in the guide post 3 while being connected to the chain 7.
(See FIG. 2).

That is, first, it is assumed that the caster 1 is formed so as to have sufficient mechanical strength with respect to a large weight as compared with that used for household furniture and the like. In addition, it is formed in the form of a double wheel.

Although not shown, the caster 1 has a brake mechanism, and the operation of the brake mechanism makes it possible to stop the base 2, that is, the small approaching device, in a fixed state at a predetermined position. ing.

The caster 1 is assumed to be held at the four corners 2a of the base 2, as is the case with casters of this type in many cases. In other words, care is taken to keep the caster 1 from being lifted as a whole by holding it.

That is, the central portion 2b of the base 2 excluding the four corners 2a is positioned lower so that the lower surface thereof does not make contact with the abyss floor G but is extremely close.
In this state, the four corners 2a are assumed to be bent upward.
The casters 1 are arranged in the space that appears below the casters.

Therefore, in the base 2, even if the large casters 1 having predetermined mechanical strength are provided at the four corners 2a, the overall height of the base 2 is increased. Therefore, it is possible to reduce the height when the elevating floor 9, which will be described later, descends most.

Incidentally, in order to reduce the weight while having a predetermined mechanical strength, the base 2 is often
For example, it may be formed in a frame structure made of an aluminum alloy or the like.

Further, as shown in the figure, the base 2 is provided with a handrail 2c and a step 2d so as to make it easier for a person who uses this approaching device to use it.

At this time, the handrail 2c also serves as an operation unit for manually moving the handrail device in this small approaching device.
Needless to say, the base 2 may be provided separately from the base c.

As a result, since the base 2 can be moved with the casters 1, it is possible to move the small approaching device to a desired position. It is possible not only to enable turning, but also to put the small pressing device in a corner of the abyss when not in use.

The guide posts 3 are paired in order to avoid unnecessarily increasing the weight of the small approaching device by forming two pairs of guide posts. A pair of waxes is also provided so as not to hinder a person from entering the elevator floor 9.

Incidentally, although not shown in detail in this embodiment, the guide post 3 is connected to the base 2 so as to be separable, and has a height up to the stage floor S in Naraku. Consideration is given so that the guide post 3 having a length corresponding to this can be selected and used when the distance varies.

The guide post 3 is configured to raise and lower a connecting means 8 to be described later along with the guide post 3, so that the guide post 3 has a rectangular cross section so that the weight can be reduced. It consists of a cylindrical body.

In addition, in many cases, this rectangular cylindrical body will be formed of, for example, an aluminum alloy or the like, similarly to the base 2 described above.

The sprockets 4, 5 are pivotally supported at the upper end and the lower end of the guide post 3, and are wound around a chain 7, which will be described later. The sprocket 5 is set on the driving side connected to the driving means 6 described later, and the upper sprocket 4 is set on the driven side not connected to the driving means 6.

Incidentally, from the viewpoint of raising the chain 7 in order to raise the elevating floor 9, it can be said that it is mechanically preferable that the upper sprocket 4 is set on the driving side. If the location is considered, it can be said that it is preferable that the lower sprocket 5 is set on the drive side as shown in the figure.

The drive means 6 drives the lower sprocket 5. In this embodiment, although not shown in detail, an electric motor 61 disposed at the center of the base 2 is not shown.
And a speed reducer 62 connected to the electric motor 61, and an output shaft 63 connected to the speed reducer 62. The lower sprocket 5 is driven via the output shaft 63.

By the way, in the drive means 6, when the lower sprocket 5 is set so as to be able to rotate in both forward and reverse directions, even if the electric motor 61 is set to a two-way motor. Further, the speed reducer 62 may be set so as to be able to change the rotation direction of the output shaft.

Although not shown in detail in this embodiment, the drive means 6 is set to be driven and controlled by a remote control, and a person entering the elevating floor 9, ie, an actor or the like, operates the drive means 6. However, it is needless to say that an operation panel may be arranged at a position not interfering with the ascending and descending floor 9, which is not shown.

In addition, in view of the conventional circumstances that often require human power for raising and lowering the floor in this kind of small approaching device, even in the small approaching device according to the present invention, the driving source of the driving means 6 is human-powered. Of course, it can be done.

In this case, the lower sprocket 5, on which the chain 7 is wound, will be driven by manual operation.

The chain 7 has the above-mentioned sprockets 4,
5 and is connected to the elevating floor 9 in a so-called infinite belt structure, but is stopped at a predetermined position by the operation of a limiter (not shown).

That is, as shown by the solid line in the figure, the position where the raising and lowering floor 9 is lowered most is shown, and as shown by the virtual line in the figure, the position where the raising and lowering floor 9 is raised most is shown. Each is set so that its movement is stopped.

By the way, in the drawing, the lower half of the chain 7 is assumed to be housed in the cover 3a connected to the guide post 3, but in this case, the chain 7 is moved up and down. It is needless to say that the movement of the chain 7 for moving up and down the floor 9 is not hindered.

It should be noted that this chain 7 is
Are of course arranged on both guide posts 3 because they are a pair, and of course, both are synchronously moved by the drive mechanism 6 described above.

As shown in FIG. 3 and FIG. 4, the connecting means 8 connects the chain 7 to the elevating floor 9 and
Are arranged so as to be connected to the guide post 3 in a stable state.

For this reason, first, as shown in the figure, a bracket 81 is connected to the chain 7 and this bracket 81 is connected to the elevating floor 9. At this time, the bracket 81 itself has a predetermined mechanical strength. And is formed so as not to be easily deformed.

Next, upper and lower rollers 82 respectively held by brackets 82 and 83 connected to the elevating floor 9 are provided.
a, 82b and 83a, 83b are positioned so as to sandwich the guide post 3 while facing each other.

Also, a bracket 8 connected to the elevating floor 9 is provided.
4, the rollers 84a, 84b held there are also brought into contact with the guide posts 3. At this time, the rollers 84a, 84b are connected to the upper sprocket 4 for winding the chain 7 with the guide posts 3 interposed therebetween. Are positioned so as to oppose to each other.

At this time, the brackets 82, 83, 84
Has predetermined mechanical strength similarly to the bracket 81 described above, and is formed so as not to be easily deformed.

In the drawing, the bracket 81 is integrally connected to one of the brackets 83. Therefore, the chain 7 and the elevating floor 9 are integrally connected by the brackets 81 and 83. Will be.

By the way, the connecting means 8 is embodied as a so-called both since the guide posts 3 are paired and the chain 7 is arranged on each guide post 3. .

As a result, according to the connecting means 8, the lifting floor 9 is connected to the chain 7 so that the lifting floor 9 can be moved up and down along with the guide post 3 by the movement of the chain 7. However, at this time, the lifting floor 9 is prevented from swinging up, down, left, and right with respect to the guide post 3 in the horizontal direction.

According to the above description, as a result, it is sufficient that the connecting means 8 be able to move up and down along the guide post 3 while connecting the lifting floor 9 to the chain 7 while preventing unnecessary shaking. While the elevating floor 9 is connected to the chain 7 as described above, for example, although not shown, a roller housed inside the guide post 3 formed in a rectangular tube shape is held by the elevating floor 9. Of course, any configuration can be selected.

The elevating floor 9 is interposed between the lower floor 91 connected to the chain 7 and the upper floor 92 which is overlapped with an appropriate gap above the lower floor 91 through the bracket 81 described above. It is assumed that there is provided an adjusting means 10 (see FIGS. 1 and 2) between the lower floor 91 and the upper floor 92 which can adjust the inclined state of the upper floor 92 while being formed in a double floor structure.

The reason why the elevating floor 9 is formed to have a double floor structure is based on the fact that the abyss floor G and the stage floor S are not necessarily formed in a horizontal state. Therefore, as long as the abyss floor G and the stage floor S are formed in a horizontal state, the adjusting means 1
No adjustment by zero is required.

Incidentally, this adjusting means 10
Although an arbitrary configuration can be selected and not shown in detail, in this embodiment, it is formed in a turnbuckle structure and is arranged at so-called four corners, and a rotating operation using an appropriate tool is performed. , The upper floor 92 moves up and down with respect to the lower floor 91.

In the small approaching device according to the present invention formed as described above, since the base 2 has the casters 1, the base 2, that is, the small approaching device can be mounted on the abyss floor G as desired. Will be able to move to the position.

At this time, since the base 2 is formed as lightweight as possible, the base 2, that is, the small approaching device can be easily moved by manual operation. This makes it possible to move when used as an approach, or to clear a corner of an abyss when not in use.

When using the small approaching device, the small approaching device is moved and positioned below the opening S1 formed on the stage floor S, and the elevator floor 9 is moved in a state where the rotation of the caster 1 is prevented. It will be enough to rise.

At this time, according to the present invention, the guide post 3 not only serves as a so-called guide for raising and lowering the raising and lowering floor 9, but also as a means for interposing the chain 7 moved by the driving means. The number of members can be reduced and the weight of the entire apparatus can be reduced as compared with the case where there are posts only for raising and lowering the 9 and also posts only for interposing the chain 7. Will contribute.

By the way, the opening S1 left as it is on the stage floor S is not shown, but it is closed from the upper side of the stage floor S by, for example, a dedicated lid or the like, because this small approaching device is not used.

By the way, according to the above description, this small approaching device has a so-called fixed up-and-down floor 9, and therefore, depending on the setting of the up-and-down floor 9,
That is, depending on the size of the floor area of the elevating floor 9, there is a fear that the reusable floor 9 cannot be reused.

That is, when the size of the elevating floor 9 is set to the direction of the turtle, it cannot be used for the small approach where the floor area becomes larger.

Therefore, in the present invention, as one solution, the upper floor 92 constituting the elevating floor 9 is provided with the stage floor S
And an adjustment frame 93 to be fitted in the opening S1 formed in the apparatus.

Incidentally, the adjusting frame 93 is formed in a corridor shape having a rectangular shape in plan view, and is connected to and held on the upper floor 92 by an appropriate connector (not shown).

Therefore, in the small approaching device formed as described above, the adjustment floor 93 is connected to the upper floor 92 of the lifting floor 9, and in this state, the same operation as described above is performed to raise and lower the floor. It is enough if the floor 9 is raised.

In view of the function of the adjusting frame 93, the adjusting frame 93 may be fixedly fitted in the opening S1 formed in the stage floor S. In this case, the pair of guide posts 3 The upper end can be detachably connected to the lower surface of the adjustment frame 93.

As a result, the upper end of the guide post 3 is connected to the stage floor S, so that the upper end of the guide post 3 is prevented from flickering, and the elevating floor 9 that follows the guide post 3 moves up and down. Becomes easier to stabilize.

Incidentally, the adjusting floor 93 is connected to the opening S of the stage floor S.
1, the adjustment floor 93 is separated from the upper floor 92, so long as another adjustment frame 93 is newly connected to the upper floor 92, It becomes possible to use the device not only for turtles but also for slightly larger ones.

The upper end of the guide post 3 is detachably connected to the lower surface of the adjustment frame 93 fitted in the opening S1 of the stage floor S. Of course, any configuration can be adopted, but it is not shown. However, for example, if a downward pin is protruded from the lower surface of the adjustment frame 93 and holes are provided at the upper end of the guide post 3 for inserting this pin, an unnecessary increase in cost is caused. Therefore, a desired connection structure can be realized.

In the above description, this small approaching device is movable by human power. However, from the intention of the present invention, for example, it is assumed that the device is configured to be movable by power using electricity. Of course, it is good.

[0063]

As described above, according to the present invention, since the base has the casters, it can be moved to a desired position on the abyss, so that this small approaching device is used. In this case, it is possible to move the small approaching device by manual operation because the base is formed as light as possible.

The central portion of the base excluding the four corners is positioned so that the lower surface thereof is not in contact with the abyss but is positioned very close to the bottom, while the four corners are bent upward. Since it is assumed that the casters are arranged in a space that appears below the four corners that appear to be lifted, large casters having predetermined mechanical strength are provided at the four corners. Even so, the overall height of the base can be kept low, and therefore, the height when the elevating floor descends most can be reduced.

Further, according to the present invention, the raising and lowering floor is formed in a double floor structure having a lower floor and an upper floor connected to a chain, and the inclination of the upper floor with respect to the horizontal is between the lower floor and the upper floor. Since it is assumed that it has an adjusting means capable of adjusting the state, even if the abyss and the stage floor are not necessarily formed in a horizontal state, the upper floor is formed on the stage floor without providing a step in the opening. It can be fitted.

According to the present invention, the guide posts are connected to the base so as to be separable, so that when the height to the stage floor in the abyss varies, the guide posts are suitable. The guide post can be selected by selecting a guide post of a desired length.

At this time, the guide post not only serves as a so-called guide for raising and lowering the raising and lowering floor, but also as an intermediary means for the chain moved by the driving means. The number of members can be reduced and the weight of the entire apparatus can be reduced, as compared with the case where it has not only the posts but also the posts only for interposing the chain.

In the present invention, since the upper floor constituting the elevating floor has an adjustable frame which can be separated, even if the elevating floor is set to be close to the suppon where the floor area is small when compared with this elevating floor, By connecting the floors, it can also be used for small looms where the floor area is larger than for turtles.

When the adjustment frame is fixedly fitted into the opening formed on the stage floor, the upper end of the guide post is detachably connected to the lower surface of the adjustment frame, so that the upper end of the guide post can be separated. Fluctuation is prevented, and the elevation of the elevating floor following the guide post is more easily stabilized.

In this case, it is possible to connect another adjustment frame to the small approaching device, so that the small approaching device can be used not only for suppon, but also for a slightly larger approach. It becomes possible to turn.

As a result, according to the present invention, there is an advantage that a predetermined approaching function can be exhibited while enabling re-use, which is optimal for expecting an improvement in versatility.

[Brief description of the drawings]

FIG. 1 is a front view showing a small approaching device according to an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is an enlarged view showing a connecting means.

FIG. 4 is a plan view showing the connecting means of FIG. 3;

[Explanation of symbols]

 Reference Signs List 1 caster 2 base 2a four corners 2b central part 3 guide post 3a cover 4,5 sprocket 6 drive means 7 chain 8 connecting means 9 elevating floor 10 adjusting means 61 motor 62 reducer 63 output shaft 81,82,83,84 bracket 82a, 83a, 84a Roller 91 Lower floor 92 Upper floor 93 Adjustment frame

Claims (4)

[Claims] 1. A base supported by a plurality of casters rolling on an abyss, a pair of guide posts erected so as to face the base, and upper and lower sides of the guide posts. A chain which is wound on a pivotally supported sprocket and moves up and down by an appropriate driving means; and In a small approaching device having a lifting floor that can be raised and lowered, casters are arranged below the four corners where the base is bent upward, and the lifting floor is connected to the chain. The upper floor is formed between the lower floor and the upper floor while being formed in a double floor structure including the lower floor connected to the upper floor and the upper floor not connected to the chain and having an appropriate gap above the lower floor. Tilt on the floor A small approaching device comprising an adjusting means capable of adjusting the inclined state. 2. The approaching device according to claim 1, wherein the pair of guide posts are connected to the base so as to be separable. 3. The approaching device according to claim 1, wherein upper ends of the pair of guide posts are separably fixed to a lower surface of a corridor-shaped adjustment frame fixedly fitted to an opening of the stage floor. 4. The small approaching device according to claim 1, wherein the upper floor of the elevating floor has a corridor-shaped adjustment frame detachably fitted in an opening of the stage floor.