JPH11247470A - Enlarging/storing mechanism of enlarging type shelthr - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the enlarging/storing mechanism of an enlarging type shelter which is simply constituted, without requiring high assembling accuracy, is excellent in viewpoint of cost, is operated surely and stably, is little in danger and trouble is prevented, dose not change operation force even in the use on a slope, and can be operated by not only manual operation but motorized operation. SOLUTION: In this enlarging/storing mechanism 17 of an enlarging type shelter 1, a first and sprockets 33,34 are fixed to shafts 31 rotationally movable by an operation part 32 held with a main body part 2. A left rod 35 is projected from an enlarging part on the left 3, and a first chain 36 is laid extending over the extreme end 44 of the left rod 35, the first sprocket 33, and an enlarging part 4 on the right side. A right rod 37 is projected from the right enlarging part 4, and a second chain 38 is laid extending over the extreme end 48 of the right rod 37 between the second sprocket 34 and the enlarging part 3 on the left side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expanding storage mechanism of an expanding shelter. That is, the present invention relates to an enlarged storage mechanism that expands and stores an enlarged portion of an expandable shelter that is loaded with equipment, equipment, and the like and is moved by being loaded on a transportation means such as a truck.

[0002]

2. Description of the Related Art FIGS. 4 and 5 are front explanatory views showing an enlarged storage mechanism of an enlarged type shelter of this kind in the related art.
5 shows Conventional Example 1, FIG. 5 (1) shows Conventional Example 2, and FIG. 5 (2) shows Conventional Example 3. The expandable shelter 1 is loaded with equipment, equipment, etc., and is loaded on a truck or other transportation means and moved. A main body 2 having a box shape and an open side surface; and enlarged portions 3 and 4 nested in the main body 2 from the side through the open side surface;
And enlargement storage mechanisms 5, 6, 7 of the enlargement portions 3, 4. The enlarged portions 3 and 4 are formed in a box shape with the side surface on the side of the main body 2 opened, and can be pushed out and expanded with respect to the main body 2 and retracted and stored.

[0003] The enlarged storage mechanism 5 of the first conventional example shown in FIG. 4 is configured to supply pressurized air from an air source 8 to an air cylinder 10 via a connection pipe 9. The supply of pressurized air to the cylinder chambers before and after the piston of the air cylinder 10 is interrupted, so that the enlarged portions 3 and 4 connected to the tip of the piston rod are connected to the main body 2.
In contrast, he was pushing and pulling in. In the enlarged storage mechanism 6 of the conventional example 2 shown in FIG. 5A, the pinion 11 provided on the main body 2 is engaged with the pinion 11 by turning the pinion 11 forward and backward with the handle 12. The rack 13 provided on the side of the enlarged portions 3 and 4 is configured to move forward and backward. By moving the rack 13 forward and backward, the enlarged portions 3 and 4 are pushed or pulled into and out of the main body 2. In the enlarged storage mechanism 7 of the conventional example 3 shown in FIG. 5 (2), the screw shaft 15 held on the enlarged portions 3 and 4 is screwed to the nut 14 fixed on the main body 2 side. By rotating the screw shaft 15 forward and backward with the handle 16, the screw shaft 15 moves forward and backward with respect to the fixed nut 14. And, by moving the screw shaft 15 forward and backward, the enlarged portions 3 and 4 are pushed or pulled into and out of the main body 2.

[0004]

The following problems have been pointed out in such a conventional example. The enlarged storage mechanism 5 of the first conventional example in FIG. 4 is as follows. First, the expansion and storage mechanism 5 requires an air source 8 and an air cylinder 10, and also requires connection of a connection pipe 9 between the air source 8 and the air cylinder 10, which takes a lot of man-hours for assembly. Problems were pointed out in terms of cost.

[0005] Second, according to the enlarged storage mechanism 5, when the enlarged portions 3 and 4 are not pushed out or pulled in smoothly for some reason, such as generation of a load due to being caught, they are supplied and accumulated. The pressurized air is compressed to generate excessive pressure and pressing force, and the air cylinder 10 and the enlarged portions 3 and 4 may suddenly operate suddenly. In other words, the enlarged parts 3 and 4
However, it is often pushed or pulled out suddenly, and there has been a problem in the reliability of operation. In addition, it was pointed out that when used at a low temperature in a cold region or the like, the possibility of freezing due to moisture in the air was pointed out. Further, as shown in the enlarged type shelter 1 in which the enlarged portions 3 and 4 are assembled on the left and right sides of the main body portion 2, among the left and right enlarged portions 3 and 4 to which the air cylinders 10 are respectively connected, a little. However, it was pointed out that the one with the smaller load was pushed out or pulled in first. In other words, due to the use of the pressurized air individually, the left and right enlarging portions 3 and 4 having smaller loads are operated first, and the left and right operations often do not match. From this point of view, problems have been pointed out in the reliability of operation. As described above, regarding the enlarged storage mechanism 5 of the conventional example 1 shown in FIG. 4, first, a problem was pointed out in terms of cost, and second, a problem was pointed out in reliability of operation.

Next, the enlarged storage mechanisms 6 and 7 of the conventional examples 2 and 3 shown in FIGS. 5A and 5B are as follows. First, the racks 13 and the pinions 11 and the nuts 14 and the screw shafts 15 are used in the enlarged storage mechanisms 6 and 7. Positioning etc. was required. That is, it has been pointed out that extremely high assembling accuracy is required mechanically over the entire stroke, which increases the cost.

Second, since the racks 13 and the pinions 11 and the nuts 14 and the screw shafts 15 are used in the enlarged storage mechanisms 6 and 7, it has been pointed out that they are susceptible to dust and dirt and are easily damaged. Was. That is, since the rack 13, the pinion 11, the nut 14, the screw shaft 15 and the like are exposed to the outside, dust and dirt are easily attached, and therefore, the meshing and the screwing are liable to be hindered. It is not easy to provide such a protection means, etc., so that a failure is likely to occur and anxiety has been pointed out about the reliability of operation.

Thirdly, when the expanding shelter 1 is used on a sloping ground, there is also a problem that an excessive operating force is required when pushing out or pulling the expanding portions 3 and 4 upward from below the slope. there were. That is, since the handles 12, 16 are rotated by manual operation, a large operation force is required on the upward side from the bottom to the top of the slope. Conversely, on the down side, that is, from the top to the bottom of the slope, the enlarged portions 3 and 4 may be pushed or pulled in naturally without applying an operating force, which is dangerous. Fig. 5 (1), (2)
As for the enlarged storage mechanisms 6 and 7 of the conventional examples 1 and 2 shown in the figure, as described above, a problem is pointed out first in terms of cost, and secondly, a problem is pointed out in reliability of operation. Third
In addition, problems were pointed out on use on slopes.

The present invention has been made in view of the above circumstances, and has been made to solve the above-mentioned problems of the prior art. In the enlarged storage mechanism of the expandable shelter according to the first aspect, the operating section is held by the main body. The first sprocket and the second sprocket are fixed to a rotatable shaft, and the left rod protrudes from the enlarged portion on the left side.
The first chain extends between the sprocket and the right enlarged portion, and the right rod projects from the right enlarged portion, and the second chain extends between the right rod tip, the second sprocket, and the left enlarged portion. Pass it. Further, in the enlarged storage mechanism of the expandable shelter according to claim 2, the drive sprocket is fixed to a shaft held by the main body and rotatable by the operation section, and the mechanism rod is projected from the enlarged section.
A drive chain is stretched between the tip of the mechanism rod, the driving sprocket, and the enlarged portion via a floating sprocket for changing the direction. Accordingly, claims 1 and 2 of the present invention
First, it has a simple structure and does not require high assembling accuracy, is excellent in cost, is secondly reliable, and thirdly, does not change its operating force even when used on a slope. Fourth,
It is an object of the present invention to propose an enlarged storage mechanism of an expandable shelter that can be motorized as well as operated manually.

[0010]

The technical means of the present invention for solving such a problem is as follows. First, claim 1 is as follows. That is, the expandable shelter is loaded with equipment, equipment, and the like, and is loaded and moved on a truck or other transportation means. A main body having a box shape and left and right side surfaces opened; a left and right enlarged portion nested in the main body portion from the side through the opened side surface; and an enlarged storage mechanism of the enlarged portion. And The enlarged portion has a box shape with an open side surface on the main body side, and can be pushed out and enlarged with respect to the main body portion, and can be retracted and stored. The enlarged storage mechanism includes the following shaft, operation unit, first sprocket, second sprocket, left rod, first chain, right rod,
It has a second chain and the like. That is, a shaft that is held by the main body, is disposed in the front-rear direction orthogonal to the side direction, and is rotatable around an axis, an operation unit attached to the shaft and configured to rotate the shaft, and fixed to the shaft. First
A sprocket and a second sprocket, a proximal end fixed to a side wall of the enlarged portion on the left side, and a distal end serving as a free end and located on the right side of the first sprocket in the main body;
A left rod arranged in the lateral direction, one end is fixed to the tip of the left rod, the middle is hung around the first sprocket, and the other end is fixed to the side wall of the enlarged portion on the right side. A first chain arranged laterally and a base end fixed to a side wall of the enlarged portion on the right side, and a front end serving as a free end and located on the left side of the second sprocket in the main body; A right rod arranged in the lateral direction, one end is fixed to the tip of the right rod, the middle is hung around the second sprocket, and the other end is fixed to the side wall of the enlarged portion on the left side. And a second chain arranged in the lateral direction.

Next, claim 2 is as follows.
That is, this expandable shelter is an expandable shelter which is loaded with equipment, equipment and the like, is loaded on a truck or other transportation means, and is moved, and has a box-like shape and one of right and left sides thereof is opened. A body, an enlarged part telescopically assembled to the main body from the side through the open side surface, and an enlarged storage mechanism for the enlarged part. The enlarged portion has a box shape with an open side surface on the main body side, and can be pushed out and enlarged with respect to the main body portion, and can be retracted and stored. The enlarged storage mechanism includes the following shaft, operation unit, drive sprocket, mechanism rod,
It has a drive chain, a floating sprocket, and the like. That is, a shaft that is held by the main body, is disposed in the front-rear direction orthogonal to the side direction, and is rotatable around an axis, an operation unit attached to the shaft and configured to rotate the shaft, and fixed to the shaft. The drive sprocket and the base end are fixed to the side wall of the enlarged portion, and the distal end is a free end and is located on the side opposite to the enlarged portion of the drive sprocket in the main body portion,
A mechanism rod arranged in the lateral direction, one end of which is fixed to the tip of the mechanism rod, the middle is hung around the driving sprocket, and the other end is fixed to the side wall of the enlarged portion. A drive chain arranged in the direction, and held between the main body and the tip of the mechanism rod and the drive sprocket;
Or a floating sprocket interposed between the driving sprocket and the side wall of the enlarged portion, wherein the driving chain is hung around to reverse the direction of the driving chain. I do.

The enlarged storage mechanism of the present invention is configured as described above. Therefore, in the first aspect, first, the first sprocket and the second sprocket are rotated in the forward direction via the shaft by the operation unit. Then, the first
The first chain hooked around the sprocket pulls the side fastened to the tip of the left rod, and the side fastened to the right side wall of the enlarged portion becomes slack, so the left rod and the left enlarged portion are
It is pushed to the left and expands. At the same time, the second chain hooked around the second sprocket pulls the side fixed to the tip of the right rod, and the side fixed to the left side wall of the enlarged portion becomes slack, so that the right rod and the right enlarged portion are It is pushed right and expanded. Next, at the operation unit, the first
The sprocket and the second sprocket rotate in opposite directions. Then, the side of the first chain hooked on the first sprocket is fixed to the side wall of the enlarged portion on the right side, and the first chain is pulled.
Since the side fixed to the tip of the left rod is loosened, the right enlarged portion is retracted to the left and stored. At the same time, the side of the second chain hooked on the second sprocket is pulled on the side fixed to the left side wall of the enlarged portion, and the side fixed on the tip of the right rod is loosened. Stored.

According to the second aspect of the present invention, the drive sprocket is rotated in the forward or reverse direction via the shaft by the operation unit. Then, the drive chain wound around the drive sprocket and the floating sprocket has one of the side fixed to the tip of the mechanism rod and the side fixed to the side wall of the enlarged portion, and one of the sides is pulled, and the other side is pulled. Relax. Then, when the side fixed to the distal end of the mechanism rod is pulled and the side fixed to the side wall of the enlarged portion is slackened, the enlarged portion fixed to the proximal end of the mechanism rod is pushed out and enlarged. Conversely, if the side fixed to the side wall of the enlarged portion is pulled and the side fixed to the tip of the mechanism rod is loosened, the enlarged portion is retracted and stored.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. 1, 2 and 3 are provided for describing an embodiment of the present invention. FIG. 1 is a front sectional view, FIG.
FIG. FIG. 3A is a perspective explanatory view of a main part of another example, and FIG. 3B is a front sectional explanatory view of a main part of another example. FIG. 6 is a perspective view of the enlarged shelter.

First, the expansion type shelter 1 will be outlined. The expandable shelter 1 is loaded with equipment, equipment, etc., and is loaded on a truck or other transportation means and moved. In the examples shown in FIGS. 1, 2 and 3 (1), FIG. 6 and the like, the main body 2 has left and right side surfaces that are open, and a lateral direction through the open side surface. The left and right enlarged parts 3 and 4 nested in the main body 2 and the two enlarged parts 3
4 expansion storage mechanism 17. Each of the enlarged portions 3 and 4 has a box shape with an open side surface on the side of the main body 2, and can be pushed out and enlarged and retracted and stored in the main body 2. .

The extended shelter 1 will be described in more detail. The expandable shelter 1 houses electronic equipment such as radar equipment and wireless communication equipment, precision equipment, other equipment and materials, their storage shelves, tables, and the like.
Therefore, they are loaded on trucks and other vehicles, railway vehicles and other cargo carriers, aircraft, ships, and other transportation means, and are moved.
Used at the destination. In addition, it is excellent in sealing performance, waterproofness, airtightness, heat insulation, light weight, etc., including mobility. In the example shown in FIGS. 1, 2 and 3 (1), FIG. 6, and the like, the main body 2 is opened at both left and right sides facing each other as openings 18 and the panel-made ceiling 1 is opened.
9, a box-like shape having a floor 20, front and rear walls 21, and the like. Then, for example, it is set to a size that can be loaded on a truck bed, and a door 22 is attached to one of the front and rear walls 21 (see FIG. 6). Also, both enlarged parts 3, 4 also called a drawer part
Is formed as an inner box which can include the main body 2 as an outer box. The inner surface corresponding to the opening 18 of the main body 2 is opened as an opening 23, and the outer surface facing the opened inner surface is defined as a side wall 24 made of a panel. Floor 26, front and rear walls 2
7 and so on. The enlarged portions 3 and 4 in the illustrated example have the same size, volume, shape, and the like in the left-right symmetry, and are about half of the main body 2.

By the way, FIG. 1, FIG. 2 and FIG.
The expansion type shelter 1 shown in FIG. 6 and the like is of a double-sided expansion type in which openings 18 are formed on both left and right side surfaces of the main body 2 and left and right expansion portions 3 and 4 are respectively attached to the openings 18. . On the other hand, in the enlarged shelter 1 to which the example shown in FIG. 3B is applied, the opening 18 is formed only on one of the left and right sides of the main body 2 and the other side is a wall. And one enlarged portion 3 is provided in one of the openings 18.
It consists of a one-sided expansion type with (4) assembled. In addition,
In FIG. 1, reference numeral 28 denotes a square pipe, and a plurality of the square pipes 28 are fixed below the floor 20 of the main body 2 so as to have substantially the entire width in the lateral direction. Then, from the lower ends of the enlarged portions 3 and 4 to the main body 2
A plurality of guide rails 29 are protruded toward and are inserted into the corresponding square pipes 28. Reference numeral 30 denotes a guide roller. Then, the guide rails 29 are guided by guide rollers 30, guided, held, and taken in and out of the square pipe 28, so that the enlarged portions 3 and 4 can be smoothly enlarged and stored in the main body 2. ing. The expansion type shelter 1 is roughly like this.

Hereinafter, the enlarged storage mechanism 17 of the present invention will be described. First, the enlarged storage mechanism 17 shown in FIGS. 1 and 2 includes a shaft 31, an operating portion 32, a first sprocket 33, a second sprocket 34, a left rod 35, a first chain 36, a right rod 37, and a second chain 38. , Etc.

More specifically, first, the shaft 31 is held by the main body 2 and disposed in the front-rear direction orthogonal to the side direction, and is rotatable around the axis. In the illustrated example, two left and right shafts 31 are arranged in parallel, and are respectively held between the front and rear walls 21 of the main body 2. A connecting sprocket 39 is fixed to each of the two shafts 31, and a connecting chain 40 is stretched between the two connecting sprockets 39. Thus, between the two shafts 31, the rotating power around the shafts is transmitted through the connecting chain 40 and the two connecting sprockets 39 and the like. In addition, as described above, the connecting chain 40
It is also possible to employ a power transmission method using gears or other known power transmission methods instead of the connection sprocket 39. Note that, instead of such an example shown in FIGS. 1 and 2, only one shaft 31 is used as in the example shown in FIG. And the second sprocket 34 may be fixed. The shaft 31 is configured as described above.

Next, the operating section 32 is attached to the shaft 31 to rotate the shaft 31. In the illustrated example, a handle 41 is used as the operation unit 32, and this crank-shaped handle 41 is attached to the end of one shaft 31 on the right side in the drawing. By rotating the handle 41 in the forward and reverse directions, the one shaft 31 on the right side is rotated in the forward and reverse directions, and the other shaft on the left side is connected via the connecting sprocket 39 and the connecting chain 40 described above. 31 is also rotated in the forward and reverse directions. In addition, instead of such a handle 41 as the operation unit 32, for example,
The electric motor drive unit 42 shown in FIG.
May be used. In this case, the motor drive unit 42 is connected to the end of the one shaft 31 on the right side. The operation unit 32 is configured as described above.

Next, the first sprocket 33 and the second sprocket 34 are fixed to such a shaft 31. In the illustrated example, the first sprocket 33 on the right side
One of the right shafts 31 (the operation unit 3 described above)
2 is directly attached to the shaft 31), and the second sprocket 34 on the left side is attached to the other shaft 31 on the left side.
Are fixed respectively. In the example of FIG. 3A described above, the operating portion 32 described above is attached to one shaft 31, and the first sprocket 33 and the second sprocket 34 are fixed side by side. I have. First sprocket 33 and second sprocket 3
No. 4 is like this.

Next, the left rod 35 is arranged in the lateral direction, the base end 43 is fixed to the side wall 24 of the left enlarged portion 3, and the front end 44 is a free end and the first sprocket is formed in the main body 2. 33 is located on the right side. That is, the left rod 35
In the drawing, the left base end 43 is protruded from, for example, a lower portion of the side wall 24 of the left enlarged portion 3 to form a long plate frame. The right end 44, which is a free end, extends into the main body 2 and is always located on the right side of the position of the first sprocket 33, that is, outside the main body 2 in the lateral direction. The distal end 44 of the left rod 35 in the illustrated example is formed by bending upward. The left rod 35 is configured as described above.

Next, the first chain 36 is arranged in the lateral direction, and one end 45 is fixed to the tip end 44 of the left rod 35,
The middle is hung around the first sprocket 33, and the other end 46
Are fixed to the side wall 24 of the right enlarged portion 4. That is, the first chain 36 is configured such that the one end 45 located on the lower side in the drawing has the tip 4 of the left rod 35 in the main body 2.
It is fixed to 4. Then, after being wound around the first sprocket 33 on the right side, the other end 46 located on the upper side
Are fixed to the side wall 24 of the right enlarged portion 4. Note that, as the first chain 36, a belt-shaped chain can be used in addition to a narrowly-defined chain. First
The chain 36 is configured as described above.

Next, the right rod 37 is disposed in the lateral direction, the base end 47 is fixed to the side wall 24 of the right enlarged portion 4, and the front end 48 becomes a free end and the second sprocket is formed in the main body 2. 34 is located on the left side. That is, the right rod 37
In the drawing, a right base end 47 is protruded from the side wall 24 of the right enlarged portion 4 to form a long plate frame, and is parallel to the left rod 35 described above. The left end 48, which is a free end, extends into the main body 2, and is always located on the left side of the position of the second sprocket 34, that is, outside the lateral direction of the main body 2. The distal end 48 of the right rod 37 in the illustrated example is bent downward. The right rod 37 is configured as described above.

Next, the second chain 38 is disposed in the lateral direction, and one end 49 is fixed to the tip end 48 of the right rod 37.
The middle is wound around the second sprocket 34 and the other end 50
Are fixed to the side wall 24 of the left enlarged portion 3. That is, the second chain 38 is configured such that one end 49 located on the upper side in the drawing has the tip 4 of the right rod 37 in the main body 2.
8 is fixed. Then, halfway around the second sprocket 34 on the left, the other end 50 located on the lower side
Are fixed to the side wall 24 of the left enlarged portion 3. Note that, as the second chain 38, a belt-shaped chain can be used in addition to a narrowly-defined chain. Second
The chain 38 is like this.

The enlarged storage mechanism 17 shown in FIG. 1, FIG. 2 and FIG. 3 (1) is composed of two such shafts 31, an operating portion 32, a first sprocket 33, and a second sprocket 3.
4, left rod 35, first chain 36, right rod 37,
It has a second chain 38 and the like. Then, the present invention is applied to the above-described double-sided expansion type shelter 1.

On the other hand, the enlarged storage mechanism 17 shown in FIG. 3 (2) is applied to the one-sided enlarged type shelter 1 described above. The one-sided expansion type shelter 1 is a box-shaped main body 2 having one of the left and right sides opened, and the main body 2 is nested from the side through the opened left or right side. One of the right and left enlarged portions 3 (4) assembled in a formula and an enlarged storage mechanism 17 of the one enlarged portion 3 (4) are provided. The enlarged storage mechanism 17 shown in FIG. 3 (2) includes a shaft 31, an operation unit 32 (not shown), a driving sprocket 5
1, a mechanism rod 52, a drive chain 53, a floating sprocket 54, and the like.

To describe these in detail, first, the shaft 31 is held by the main body 2 and disposed in the front-rear direction orthogonal to the side direction, and is rotatable around the axis. The shaft 31 conforms to that described above with reference to the example shown in FIG. 1, FIG. 2, and FIG. 3 (1), but the shaft 31 of the example shown in FIG. Only books are provided. Next, the operation unit 32 is attached to the shaft 31 to rotate the shaft 31. Regarding the operation unit 32, the example shown in FIG. 1, FIG. 2, and FIG. 3A is similar to that described above, and is not shown. Next, the drive sprocket 51 is fixed to the shaft 31. This one drive sprocket 51 is the first drive sprocket 51 of the example shown in FIG. 1, FIG. 2 and FIG.
This corresponds to the sprocket 33 or the second sprocket 34.

Next, the mechanism rod 52 has the base end 55 fixed to the side wall 24 of the enlarged portion 3 (or 4), and the distal end 56 becomes a free end, and is separated from the drive sprocket 51 in the main body 2 by the drive sprocket 51. 3 (4) side. That is, the single mechanism rod 52 is the same as the left rod 35 or the right rod 37 of the example shown in the above-described FIGS.
It is a thing corresponding to. The mechanism rod 52 has a base end 55 on the right side in the drawing protruding from the side wall 24 of the enlarged portion 3 (4) provided with only one, and is arranged in a long plate frame-like side direction. The tip 56 on the left side of the barrel extends into the main body 2. And this mechanism rod 5
The top end 56 is bent upward and is always located on the anti-expansion portion 3 (4) side, that is, on the left side in the drawing from the driving sprocket 51. The mechanism rod 52 is configured as described above.

Next, one end 57 of the drive chain 53 is fixed to the distal end 56 of the mechanism rod 52, a part thereof is hung around the drive sprocket 51, and the other end 58 is connected to the enlarged portion 3.
It is fixed to the side wall 24 of (4). This one drive chain 53 is the first chain 36 or the second chain 38 of the example shown in FIG. 1, FIG. 2 and FIG.
It is a thing corresponding to. And the drive chain 53
One end 57 located on the lower side in the drawing is fixed to the distal end 56 of the mechanism rod 52 in the main body 2. In the illustrated example, after being hung around the floating sprocket 54 in the illustrated example, it was hung around the driving sprocket 51 positioned higher than the floating sprocket 54, and thus only one other end 58 positioned higher was provided. It is fixed to the side wall 24 of the enlarged portion 3 (4). The drive chain 53
It is also possible to use a belt-shaped chain as well as a chain in a narrow sense. The drive chain 53 is configured as described above.

Next, the floating sprocket 54 is
And between the distal end 56 of the mechanism rod 52 and the driving sprocket 51 as shown in the illustrated example, or between the driving sprocket 51 and the side wall 24 of the enlarged portion 3 (4) regardless of the illustrated example. The drive chain 53 is hung around and functions to reverse the direction of the drive chain 53.

That is, a shaft 59 is mounted between, for example, the front and rear walls 21 of the main body 2, and the shaft 59 is disposed in the front and rear direction orthogonal to the side direction, and the floating sprocket 54 is mounted. The floating sprocket 54 is freely rotatable forward and reverse. The floating sprocket 54 in the illustrated example includes a distal end 56 of the lower mechanism rod 52 and an upper driving sprocket 5.
1 and its shaft 59 is larger than the shaft 31 of the drive sprocket 51 by an enlarged portion 3 (4).
Side, that is, at the opposite end 56 of the mechanism rod 52. Instead of the illustrated example, the position of the floating sprocket 54 and the position of the driving sprocket 51 can be set opposite to those in the illustrated example. That is, the floating sprocket 54 is connected to the driving sprocket 51 and the enlarged portion 3.
(4) It may be located between the side walls 24. In this case, the floating sprocket 54 is positioned higher than the driving sprocket 51, and the axis of the floating sprocket 54 is closer to the distal end 56 of the mechanism rod 52 than the axis of the driving sprocket 51, that is, to the anti-expansion portion 3 (4). Located in.

In any case, the floating sprocket 5
4, the drive chain 53 is hung, and the drive chain 53
Is changed direction. That is, the function is such that the one end 57 and the other end 58 of the drive chain 53 are located not in the same direction / side but in opposite sides in the left-right direction, that is, the arrangement direction of the drive chain 53 is reversed. The floating sprocket 54 is
It looks like this. The enlarged storage mechanism 17 shown in FIG. 3 (2) includes such a shaft 31, an operation unit 32,
It has a drive sprocket 51, a mechanism rod 52, a drive chain 53, a floating sprocket 54, and the like, and is applied to the one-side expansion type shelter 1.

The present invention is configured as described above. Then, it becomes as follows. First, the enlarged storage mechanism 17 of the enlarged shelter 1 shown in FIGS. 1, 2 and 3 (1) is as follows. First, the operation unit 32
The shaft 31 in the forward direction (for example, clockwise in the drawing)
In the example of FIGS. 1 and 2, the first shaft 31 is rotated by the two shafts 31 via the connecting sprocket 39 and the connecting chain 40, and in the example of FIG. The sprocket 33 and the second sprocket 34 are also rotated in the forward direction (clockwise in the drawing).

Thus, the first chain 36 wound around the first sprocket 33 has its side (lower side in the drawing) fastened to the tip 44 of the left rod 35 and the right enlarged portion 4 side wall 24 The left side of the enlarged portion 3 to which the base end 43 of the left rod 35 is fixed is pushed to the left by pulling the distal end 44 of the left rod 35 to the left because the side (the upper side in the drawing) fixed to the left is loosened. . At the same time, the side (upper side in the drawing) of the second chain 38 wound around the second sprocket 34 is fixed to the tip 48 of the right rod 37, and the second chain 38 is fixed to the side wall 24 of the left enlarged portion 3. Since the attached side (the lower side in the drawing) is slack, the right rod 37 tip 48
Is pulled to the right, the right enlarged portion 4 to which the base end 47 of the right rod 37 is fixed is pushed to the right. In this way, both the left and right enlarged portions 3 and 4 are pushed out of the main body 2 of the expandable shelter 1 and are enlarged.

Next, when the shaft 31 is rotated in the reverse direction (for example, counterclockwise in the drawing) by the operating section 32, the shaft 31 is connected via the connecting sprocket 39 and the connecting chain 40 in the examples of FIGS. In the example of FIG. 3A, the first sprocket 33 and the second sprocket 34 are also rotated in the opposite direction (for example, counterclockwise in the drawing) by the single shaft 31 in the example of FIG. .

The first chain 36 wound around the first sprocket 33 has its side (upper side in the drawing) fixed to the right enlarged portion 4 side wall 24 pulled out, and the left rod 35
Since the side fixed to the tip 44 (the lower side in the drawing) is slackened, the right enlarged portion 4 is pulled left. At the same time, the side (lower side in the drawing) of the second chain 38 wrapped around the second sprocket 34 is fixed to the left enlarged wall 3 side wall 24, and is fixed to the right rod 37 tip 48. Since the attached side (upper side in the drawing) is loosened, the left enlarged portion 3
Is drawn to the right. In this manner, the left and right enlarged portions 3 and 4 are both drawn into the main body 2 of the expandable shelter 1 and stored. The enlarged storage mechanism 17 shown in FIGS. 1, 2 and 3 (1) operates in this manner.

The enlarged storage mechanism 17 of the enlarged shelter 1 shown in FIG. 3B is as follows. First, when the shaft 31 is rotated in the forward direction (clockwise in the illustrated example) by the operation unit 32 (not shown), the drive sprocket 51 is also rotated in the forward direction (clockwise in the illustrated example). Accordingly, the drive chain 53 wrapped around the drive sprocket 51 and the floating sprocket 54 has its side (lower side in the illustrated example) fastened to the distal end 56 of the mechanism rod 52 via the floating sprocket 54 and is enlarged. Part 3
(4) The side fixed to the side wall 24 (the upper side in the illustrated example)
Relax. Then, when the distal end 56 of the mechanism rod 52 is pulled (to the right in the drawing), the enlarged portion 3 (4) fixed to the base end 55 of the mechanism rod 52 is pushed out of the main body 2 (to the right in the drawing). And enlarged.

On the other hand, the shaft 3
When 1 is rotated in the opposite direction (counterclockwise in the illustrated example),
The driving sprocket 51 is also rotated in the opposite direction (counterclockwise in the illustrated example). Thus, the drive chain 5 spanned over the drive sprocket 51 and the floating sprocket 54
The side 3 (the upper side in the illustrated example) fixed to the side wall 24 of the enlarged portion 3 (4) is pulled, and the floating sprocket 54
The side (lower side in the illustrated example) fastened to the distal end 56 of the mechanism rod 52 through the opening becomes loose. Thereby, the enlarged portion 3 (4) is retracted and stored in the main body portion 2.

The driving sprocket 5 is not limited to the illustrated example.
When the arrangement positions of the first sprocket 54 and the floating sprocket 54 are set opposite to those shown in FIG. 3 (2), the operation is reversed. That is, first, the shaft 31
When the drive sprocket 51 is rotated in the forward direction (for example, clockwise), the enlarged portion 3 (4) is retracted and stored. Conversely, when the shaft 31 and the drive sprocket 51 are rotated in the opposite direction (for example, counterclockwise) by the operation unit 32, the enlargement unit 3 (4) is pushed out and enlarged. FIG.
The enlarged storage mechanism 17 shown in FIG. The enlarged storage mechanism 17 of the enlarged shelter 1 shown in FIG. 1, FIG. 2, FIG. 3 (1), FIG. Then, the following first, second, third, and fourth are obtained.

First, the enlarged storage mechanism 17 shown in FIG. 1, FIG. 2, and FIG.
The first and second sprockets 33 and 34 are fixed to the first and second rods 35 and 37 from the right and left enlarged portions 3 and 4, respectively, and the first and second chains 36 and 38 are stretched. As described above, the enlarged storage mechanism 17 has a simple configuration. Further, the enlarged storage mechanism 17 shown in FIG.
The drive sprocket 51 is fixed to the
The mechanism rod 52 is projected from (4), and the drive chain 53 is stretched over the floating sprocket 54. Thus, the enlarged storage mechanism 17 also has a simple configuration. Thus, in the enlarged storage mechanism 17, strict positioning or the like is not required, and the following reliable operation can be obtained with relatively low-precision assembly.

Second, this enlarged storage mechanism 17 is similar to that shown in FIGS.
In both the example shown in FIGS. 2 and 3 (1) and the example shown in FIG. 3 (2), the first sprocket 3
3, a system using a sprocket such as the second sprocket 34, the driving sprocket 51, and the floating sprocket 54, and a chain such as the first chain 36, the second chain 38, and the driving chain 53. Therefore, since this enlarged storage mechanism 17 is formed using a sprocket and a chain,
Compared to the method using air cylinders, racks and pinions, nuts and screws, etc., the operation is stable, there is no danger of excessive force or sudden operation, and freezing even at low temperatures There is no fear. Also, when the left and right enlarged portions 3 and 4 are provided as in the examples shown in FIGS. 1, 2 and 3 (1), the operations of the left and right enlarged portions 3 and 4 easily match. I will be. Furthermore, it is strong against dust and trash.

Third, in the enlarged storage mechanism 17 shown in FIGS. 1, 2 and 3 (1), the left rod 35 tip 44 of the left enlarged portion 3 and the right enlarged portion 4 are connected to each other. A first sprocket 33, which is held by the main body 2 at the center and to which the operating force is transmitted, is located therebetween, and a first chain 36 is stretched over these. Similarly, between the tip 48 of the right rod 37 of the right enlarged portion 4 and the left enlarged portion 3, the second sprocket 34, which is held by the main body 2 at the center and to which the operating force is transmitted, is located. , And a second chain 38 are bridged.
Therefore, according to the enlarged storage mechanism 17, the right and left enlarged portions 3 and 4 are always balanced in weight. Therefore, the expanding type shelter 1 is used on an inclined ground, and therefore, when pushing out or pulling out the expanding portions 3 and 4 from the bottom to the top of the slope, it is not necessary to particularly require a large operation force.

In the enlarged storage mechanism 17 shown in FIG. 3 (2), the distal end 56 of the mechanism rod 52 of the enlarged portion 3 (4) is used.
A drive sprocket 51 held by the main body 2 and transmitting the operating force is positioned between the drive sprocket 51 and the enlarged portion 3 (4), and a drive chain 53 is stretched over these. Therefore, according to the enlarged storage mechanism 17, the enlarged portion 3 (4) is always balanced in weight with respect to the main body 2. Therefore, the expanding type shelter 1 is used on an inclined ground, and therefore, when pushing out or pulling out the expanding portions 3 and 4 from the bottom to the top of the slope, it is not necessary to particularly require a large operation force.

Fourth, in the enlarged storage mechanism 17 shown in FIGS. 1, 2 and 3 (1) and the example shown in FIG. The handle 41 is manually operated by attaching the handle 41 thereto. Further, the handle 41
Alternatively, for example, by connecting the motor drive unit 42 to the operation unit 32, power can be provided.

[0046]

As described above, according to the first aspect of the present invention, the first and second sprockets and the first sprocket are attached to the shaft that is held by the main body and rotatable by the operation unit. The second sprocket is fixed, and the left rod protrudes from the left enlarged portion, and the first chain is bridged between the left rod tip, the first sprocket, and the right enlarged portion, and from the right enlarged portion. The right rod protrudes, and the second chain is stretched between the right rod tip, the second sprocket, and the left enlarged portion. According to the second aspect of the present invention, the drive sprocket is fixed to the shaft held by the main body and rotatable by the operation unit, and the mechanism rod is projected from the enlarged part. In between, a drive chain is stretched over a floating sprocket for direction change. Therefore, both the first and second aspects exhibit the following effects.

First, it has a simple structure, does not require high assembly precision, and is excellent in cost. That is, according to the first aspect of the present invention, in the first aspect, the first sprocket and the second sprocket are fixed to the shaft of the main body, and the left rod and the right rod protrude from the left and right enlarged portions.
It has a simple structure in which the first chain and the second chain are bridged. Also, in the present invention, the driving sprocket is fixed to the shaft of the main body, and the mechanism rod is projected from the enlarged portion, and the driving chain is stretched through the floating sprocket.

As described above, this expanding storage mechanism does not require an air source, an air cylinder, a connection pipe, and the like unlike the above-described conventional example 1 of this type, and does not require assembling man-hours.
Also, unlike the conventional examples 2 and 3 described above, strict positioning and high assembling accuracy are not required for the engagement between the rack and the pinion and the engagement between the nut and the screw shaft. Therefore, the enlarged storage mechanism of the present invention is extremely excellent in cost from these aspects.

Second, the operation is also reliable. That is, since the expansion storage mechanism uses a sprocket and a chain in both the first and second aspects, the operation is stable,
There is no danger of excessive force being generated or sudden operation, and no risk of freezing even when used at low temperatures. Also, when the left and right enlarged portions are provided as in claim 1, the operations of the left and right enlarged portions are easily matched, and even if exposed to the outside, they are strongly resistant to dust and dirt and may be damaged. There is no.

That is, as in the above-mentioned conventional example 1, the pressurized air supplied for some reason is compressed to generate an excessive pressure and a pressing force, so that the enlarged portion is suddenly pushed out or retracted. There is no danger of being dropped. or,
When used at low temperatures, such as in cold regions, there is no risk of failure due to freezing of moisture in the air. Furthermore, when the left and right enlarged portions are provided, each of the left and right enlarged portions having a smaller load may be operated first due to the operation with the pressurized air. Absent. Also, as in the above-mentioned conventional examples 2 and 3, the engagement between the rack and the pinion and the engagement between the nut and the screw shaft are
There is no possibility that trouble is caused by the attached dust or dust, and a failure occurs. As described above, the operation of the enlarged storage mechanism of the present invention is very stable.

Third, the operating force does not change even when used on a slope. That is, in this enlarged storage mechanism, first, in the first aspect, the first operation force transmitted by the main body portion is held between the tip of the left rod of the left enlarged portion and the right enlarged portion.
A sprocket is located and the first chain is bridged. Similarly, a second sprocket, which is held by the main body and transmits the operating force, is located between the right rod tip of the right enlarged portion and the left enlarged portion. Then, the second chain is extended.
Thus, the left and right enlarged portions are balanced in weight. According to a second aspect of the present invention, a driving sprocket, which is held by the main body and transmits an operating force, is positioned between the distal end of the mechanism rod of the enlarging portion and the enlarging portion, and a driving chain is stretched over the main body and the enlarging portion. Good weight balance between them. Therefore, in the expanding storage mechanism of the present invention, when the expanding type shelter is used on an inclined surface, when the expanding portion is pushed up or down from the bottom of the slope to the upper side, this kind of conventional example 2 described above is used. , 3 can be avoided. Also, the danger of the extension being pushed or pulled in naturally from top to bottom of the slope is avoided.

Fourth, not only manual operation but also motorization is possible. That is, in this enlarged storage mechanism, both of the first and second aspects enable easy manual operation by attaching a handle to the operation section, and easily connect a motor drive unit to the operation section, thereby facilitating power supply. Is possible. Further, by connecting various other drive units to the operation unit, it is possible to use various drive sources such as an electric type, a pneumatic type and a hydraulic type. As described above, the effects exhibited by the present invention are remarkable and large, for example, all the problems existing in this type of conventional example are solved.

[Brief description of the drawings]

FIG. 1 is an explanatory front sectional view for explaining an embodiment of an enlarged storage mechanism of an enlarged shelter according to the present invention;

FIG. 2 is an explanatory perspective view for explaining the embodiment of the present invention;

FIGS. 3A and 3B are views for explaining the embodiment of the present invention, and FIG. 3A is a perspective explanatory view of a main part of another example, and FIG. It is.

FIG. 4 is an explanatory front view showing a first conventional example of the enlarged storage mechanism of the enlarged shelter.

5 (1) is an explanatory front view showing a second conventional example of the enlarged storage mechanism of the enlarged shelter, and FIG. 5 (2) is a front view showing the third conventional example of the enlarged storage mechanism of the enlarged shelter. It is a front explanatory view.

FIG. 6 is a perspective view of an enlarged shelter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Expandable shelter 2 Main part 3 Left expanded part 4 Right expanded part 17 Expansion storage mechanism 24 Side wall 31 Shaft 32 Operation part 33 1st sprocket 34 2nd sprocket 35 Left rod 36 1st chain 37 Right rod 38 2nd chain 43 proximal end 44 distal end 45 end 46 other end 47 proximal end 48 distal end 49 one end 50 other end 51 driving sprocket 52 mechanism rod 53 drive chain 54 floating sprocket 55 proximal end 56 distal end 57 end 58 other end 59 shaft

Claims (2)

[Claims] 1. An expandable shelter loaded with equipment, equipment and the like and loaded and moved on a truck or other transportation means, comprising a box-shaped main body having left and right open side surfaces;
A left and right enlarged portion nested into the main body from the side through the open side surface; and an enlarged storage mechanism for the enlarged portion. Is formed in a box shape having an open side surface, and can be pushed out and expanded and retracted and stored in the main body, and the expanded storage mechanism is held by the main body and is orthogonal to the side direction. A shaft that is arranged in the front-rear direction and is rotatable around an axis, an operation unit attached to the shaft and configured to rotate the shaft, a first sprocket and a second sprocket fixed to the shaft, and a base end. A left rod fixed to a side wall of the enlarged portion on the left side, the tip of which is a free end and located rightward of the first sprocket in the main body portion, and a laterally disposed left rod; Is fixed to the tip of
A first side chain disposed around a sprocket, the other end of which is fixed to a side wall of the right enlarged portion;
The proximal end is fixed to the right side wall of the enlarged portion, and the distal end is
A right rod, which is a free end and is located on the left side of the second sprocket in the main body, and is disposed laterally, one end of which is fixed to the tip of the right rod, and
A second side chain arranged around a sprocket, the other end of which is fixed to a side wall of the enlarged portion on the left side;
An enlarged storage mechanism for an expandable shelter, comprising: 2. An expandable shelter loaded with equipment, equipment and the like, loaded on a truck or other transportation means and moved, comprising a box-shaped main body having one of left and right sides opened. An enlarged portion nested into the main body portion from the side through the open side surface, and an enlarged storage mechanism for the enlarged portion; and the enlarged portion has a side surface on the main body portion side. Is formed in an open box shape, and can be pushed out and expanded and retracted and stored in the main body portion. The expansion and storage mechanism is held by the main body portion and is orthogonal to a side direction. A shaft, which is rotatable around an axis, an operation unit attached to the shaft for rotating the shaft, a driving sprocket fixed to the shaft, and a base end on a side wall of the enlarged portion. The body is fixed and the tip is a free end. A mechanism rod disposed in the lateral direction, which is located on the side opposite to the enlarged portion with respect to the driving sprocket, and one end is fixed to a tip of the mechanism rod, and the other end is hung around the driving sprocket, A laterally disposed drive chain, the end of which is fastened to a side wall of the enlarged portion, and which is held by the main body and is between the tip of the mechanism rod and the drive sprocket or the drive sprocket And a floating sprocket interposed between the drive chain and the side wall of the enlarged portion, the drive chain being hung around to change the direction of the drive chain in the reverse direction. Shelter expansion storage mechanism.