JP7108363B2 - Telescopic cover linkage mechanism and telescopic cover - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linking mechanism for linking tubular bodies in a telescopic cover whose height can be changed according to the height of an object to be stored, and a telescopic cover provided with this linking mechanism.

For transportation and delivery, cases such as crates, bins, bread boxes, etc., containing objects to be conveyed are stacked and placed on a carriage such as a dolly truck, and the objects to be conveyed are collectively conveyed. In such cases, the cases stacked in multiple stages are covered with a cover in order to protect the stacked cases from dust and direct sunlight, or to keep the transported items warm or cool. Cases stacked in multiple stages are delivered to the delivery destination in order from the top, and the height changes, so a telescopic cover that can change the height has been proposed (see, for example, Patent Document 1). .

The telescopic cover of Patent Document 1 has a nested structure in which cylindrical bodies of the same height are stored inside a large one and a small one. and an extended state in which the outer tubular body is displaced upward relative to the inner tubular body. Adjacent outer tubular bodies and inner tubular bodies are connected by a flexible connecting sheet whose length is half the height of the tubular bodies. In the contracted state in which the outer tubular body and the inner tubular body are in the same height relationship, the connecting sheet has a substantially vertical planar shape with its base end positioned higher than its tip end. . Further, in the stretched state in which the outer cylindrical body is displaced upward from the inner cylindrical body, the connecting sheet has a substantially vertical planar shape with the distal end positioned higher than the proximal end. In the extensible cover of Patent Document 1, when the outer cylindrical body is lifted, the inner cylindrical body is also lifted by being pulled by the connecting sheet, thereby sequentially lifting the plurality of cylindrical bodies.

Japanese Patent No. 5507878

In the extensible cover of Patent Document 1, the flexible connecting sheet bends in the narrow space between the inner and outer cylindrical bodies as the inner and outer cylindrical bodies move up and down relative to each other. The distal end connected to the body and the proximal end connected to the inner tubular body are exchanged. For this reason, the connecting sheet having flexibility does not fold well, such as bending at a plurality of points, or the connecting sheet gets caught on the inner and outer cylindrical bodies. Sometimes I can't.

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems associated with the prior art, and it is an object of the present invention to provide a linking mechanism for a telescopic cover and a telescopic cover that can be expanded and contracted smoothly. do.

In order to overcome the above problems and achieve the intended purpose, the present invention
A plurality of cylindrical bodies having a nested structure are provided, and a contracted state in which a small cylindrical body is housed inside a large cylindrical body, and in the contracted state, the cylindrical bodies adjacent to each other inside and outside are relatively shifted up and down. In the extensible cover configured to be able to expand and contract between the expanded state displaced to the contracted state, a linking mechanism for expanding and contracting cylindrical bodies adjacent to each other in the contracted state,
In one of the cylindrical bodies adjacent inside and outside in the contracted state, provided on a surface facing the other cylindrical body in the contracted state, the upper edge portion or the lower edge portion of the one cylindrical body a linking body having one end fixed to one of
a holder provided on a surface of the other of the cylindrical bodies adjacent to each other inside and outside in the contracted state, facing one of the cylindrical bodies in the contracted state;
The linker is
A guide portion extending vertically along the surface of the one cylindrical body from a fixed end at one end of the linking member and held by the holding member so as to be restricted from being displaced in a direction intersecting the vertical direction. When,
a locking portion provided continuously with the guide portion at the other end of the linking body opposite to the fixed end;
The holding body is provided at the edge of the other cylindrical body on the same side as the fixed end of the linking body, and the holding body is provided at the edge of the guide part accompanying the relative vertical displacement of the inner and outer adjacent cylindrical bodies. The linking mechanism of the extensible cover is configured to allow vertical sliding displacement while restricting the displacement of the engaging portion beyond the holder by being caught by the engaging portion. Moreover, it is an expansion-contraction cover provided with the said linking mechanism.

According to the linking mechanism of the expandable cover according to the present invention, it is possible to link a plurality of cylindrical bodies so as to extend and contract smoothly.
The expandable cover according to the present invention can smoothly expand and contract a plurality of cylindrical bodies by means of a linking mechanism.

1 is a schematic perspective view of a telescopic cover with a linkage mechanism according to a preferred embodiment of the present invention, in a contracted state; FIG. Fig. 2 is a schematic perspective view of a telescopic cover with an example linkage mechanism in a stretched state; FIG. 4 is a perspective view schematically showing an exploded state of a fourth tubular body and a third tubular body that constitute the extensible cover of the embodiment; FIG. 3 is a perspective view schematically showing an exploded state of a second tubular body and a first tubular body that constitute the extensible cover of the embodiment; FIG. 10 is a cross-sectional view showing the telescopic cover with the linking mechanism of the embodiment, in a contracted state; FIG. 4 is a cross-sectional view showing a telescopic cover with an example linkage mechanism in a stretched state; It is a perspective view explaining the linkage mechanism of an Example. It is an explanatory view showing a linking mechanism of an example. It is a sectional view showing a linkage mechanism of an example. It is explanatory drawing explaining the change of the height of the expansion-contraction cover of an Example.

Next, preferred embodiments of the linking mechanism of the telescopic cover and the telescopic cover according to the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the telescopic cover 10 according to the embodiment includes a plurality of cylindrical bodies 12 having a nested structure in which a small cylindrical body 12 can be accommodated inside a large cylindrical body 12. , and is composed of four cylindrical bodies 12 in the embodiment. The extensible cover 10 has a contracted state (see FIGS. 1 and 5) in which a small cylindrical body 12 is housed inside a large cylindrical body 12, and a contracted state in which the cylindrical bodies 12, 12 adjacent to each other in the inner and outer sides are arranged vertically. Adjacent inner and outer cylindrical bodies 12, 12 are connected by a linking mechanism 14 so as to be able to expand and contract between the stretched state (see FIGS. 2 and 6) in which they are displaced relatively to each other. The telescopic cover 10 has a storage space inside for storing a case C (see FIG. 10) such as a crate, a weight, and a bread box. The vertical dimension of the storage space can be changed according to the height of the cases C to be stacked.

As shown in FIGS. 3 and 4, the tubular body 12 of the embodiment is a rectangular tube having four side surfaces, front, rear, left, and right, formed of square wall portions and having a storage space penetrating therethrough vertically. Further, the cylindrical body 12 is formed so that each wall portion extends vertically and the opening area is the same from top to bottom. The inner and outer surfaces of the walls are made of sheet materials such as aluminum vapor-deposited plastic sheets that have the required functions such as flexibility, heat insulation, and light shielding. A core material such as a reinforcing plate or a heat insulating plate such as polyurethane foam is enclosed. The cylindrical body 12 is constructed by connecting the walls of each side by directly or indirectly combining sheet materials by sewing. have. The plurality of cylindrical bodies 12 have substantially the same height and similar shapes with different opening areas.

In the retractable cover 10, the innermost cylindrical body 12 in the contracted state has a housing space capable of housing the case C, and the cylindrical body 12 increases by one turn toward the outer side from the cylindrical body 12. It's becoming In the following description, in the contracted state, the innermost cylindrical body 12 is referred to as a first cylindrical body 12A, and the cylindrical body 12 positioned outside the first cylindrical body 12A is referred to as a second cylindrical body 12B. The tubular body 12 located outside the second tubular body 12B is called the third tubular body 12C, and the tubular body 12 located on the outermost side outside the third tubular body 12C is called the third tubular body 12C. It may also be referred to as a 4-cylinder body 12D. The terms “inside and outside” in relation to the tubular body 12 basically refer to the positional relationship of the telescopic cover 10 in the contracted state. Further, the front, rear, right, and left directions of the telescopic cover 10 follow the directions shown in FIG. 1 for convenience of explanation.

As shown in FIGS. 1 and 5, the telescopic cover 10 includes a lid portion 16 provided so as to be continuous with the upper edge of the rear side of the fourth tubular body 12D. The upper opening can be opened and closed by a lid portion 16 that can be folded at the ends. The lid portion 16 has a hook-and-loop fastener 18 on the front side opposite to the connecting side with the fourth tubular body 12D. A hook-and-loop fastener 20 provided on the outer surface is detachable. In addition, the stretchable cover 10 can be attached and detached by the wire fasteners 22 at the left and right lateral sides of the lid portion 16 and the upper edges of the left and right lateral sides of the fourth cylindrical body 12D. The expandable cover 10 has a positioning portion 24 whose base end portion is connected to the upper edge of the rear side of the fourth cylindrical body 12D. The positioning part 24 is a flexible belt-like or cord-like member, and includes a hook-and-loop fastener 26 that can be attached to and detached from the hook-and-loop fastener 20 provided on the outer surface of the upper edge of the front side of the fourth cylindrical body 12D. Equipped at the tip. The telescopic cover 10 has a positioning portion 24 that connects the hook-and-loop fasteners 18, 20, 26 together across the upper opening and/or the cover portion 16 that closes the upper opening of the case C stored in the storage space. By being placed on the upper end, the vertical position of the fourth tubular body 12D is determined, and the expanded state of the tubular body 12 is maintained. A reference numeral 28 provided on the lateral outer surface of the fourth cylindrical body 12D shown in FIG.

As shown in FIGS. 5, 6 and 9, the linking mechanism 14 is provided between the inner tubular body 12 and the outer tubular body 12 . It is preferable that the telescopic cover 10 is provided with a linking mechanism 14 on at least one of the pairs of side surfaces facing the cylindrical body 12 across the inner storage space. A linking mechanism 14 is provided for each of the front and rear side sets and the left and right side sets (see FIGS. 2 to 4). In the extensible cover 10 of the embodiment, the linking mechanisms 14 are arranged in a symmetrical positional relationship across the storage space of the cylindrical body 12, and the linking mechanisms 14 are provided corresponding to the four side surfaces of the cylindrical body 12, respectively. 14 have the same structure.

As shown in FIGS. 5 to 9, the linking mechanism 14 includes a linking body 30 provided on a surface of one of the cylindrical bodies 12 adjacent inside and outside, which faces the other cylindrical body 12. A holding body 32 is provided on the surface facing one of the tubular bodies 12 on the other of the adjacent tubular bodies 12 . In the embodiment, the linking body 30 is provided on the inner surface of the outer tubular body (one tubular body) 12, the holding body 32 is provided on the outer surface of the inner tubular body (the other tubular body) 12, A linking body 30 and a holding body 32 are distributed to two cylindrical bodies 12, 12 adjacent to each other inside and outside.

As shown in FIG. 7 , the linking body 30 is arranged at the center of the wall of the cylindrical body 12 in the width direction. One end of the linking body 30 is fixed to either the upper edge or the lower edge of the outer tubular body 12 , and in the embodiment, the upper end (one end) of the linking body 30 It is fixed to the inner surface by sewing or the like to form a fixed end 30a (see FIG. 5). The connecting member 30 has the other end opposite to the fixed end 30a (referred to as a locking end 30b when distinguished) is located on the opposite side of the upper edge portion of the outer cylindrical body 12 to which the fixed end 30a is fixed. It is fixed to the lower edge (see Figure 6). Thus, in this embodiment, the upper fixed end 30a and the lower locking end 30b of the linking body 30 are fixed to the inner surface of the outer tubular body 12 . The linking body 30 is provided along the inner surface of the outer tubular body 12 so as to extend over the entire upper and lower surfaces or substantially the entire inner surface (see FIGS. 3 and 4). The linking body 30 is not fixed to the outer cylindrical body 12 except for the upper end and the lower end, and the middle part between the upper end and the lower end can contact or separate from the inner surface of the outer cylindrical body 12. in a free state. The linking member 30 is vertically displaced with the vertical displacement of the tubular member 12 to which the fixed end 30a is fixed, and is housed between the tubular members 12, 12 adjacent inside and outside in a contracted state (FIGS. 5 and 5). 7(a)), and in the expanded state, most of it appears in the storage space except for the lower part (see FIGS. 6 and 7(c)). Further, when the outer cylindrical body 12 is vertically displaced, the connecting body 30 maintains a posture along the inner surface of the outer cylindrical body 12 without changing the vertical relationship between the fixed end 30a and the locking end 30b. It moves up and down integrally with the tubular body 12 while maintaining the

As shown in FIGS. 7 and 8, the connecting body 30 extends vertically from the fixed end 30a along the inner surface of the cylindrical body 12 to which the fixed end 30a is fixed, and intersects the vertical direction by the holding body 32. A guide portion 34 is held so as to restrict displacement in the direction. The locking end 30b of the linking body 30 is provided with a locking portion 36 connected to the guide portion 34. As shown in FIG. The linking body 30 is a plate-like body in which a guide portion 34 and a locking portion 36 are integrally formed, and is arranged between the adjacent inner and outer tubular bodies 12, 12 with its thickness direction directed inward and outward. (See FIG. 9). The guide part 34 has a plate-like shape with a width narrower than the width of the wall to which the linking body 30 is fixed, and the side extending in the height direction of the tubular body 12 is vertical. The engaging portion 36 is formed with a width narrower than the width of the wall portion to which the linking body 30 is fixed and wider than the guide portion 34, and extends in the width direction beyond the guide portion 34. As shown in FIG. The engaging portion 36 has portions extending in opposite directions in the width direction and formed symmetrically with the guide portion 34 interposed therebetween. The engaging portion 36 has a lower edge opposite to the guide portion 34 fixed to the tubular body 12 by sewing or the like, and an upper edge side connected to the guide portion 34 is attached to the tubular body 12 to which the fixed end 30a is fixed. It is in a free state in which it can touch and separate from the inner surface. The linking body 30 of the embodiment has a shape such that the letter "T" is turned upside down by the guide portion 34 and the locking portion 36 (see FIGS. 7 and 8).

The connecting body 30 can be formed from a solid body or a foamed body of synthetic resin such as polyethylene, and it is preferable to use a foamed body having a low expansion ratio because it can be made lighter. The linking body 30 preferably has elasticity such that it can be bent when an external force is applied, returns to its original state in a natural state when no external force is applied, and has a shape retention property that allows it to stand on its own along the wall. A low-foam polyethylene sheet is suitable because it is lightweight and has "elasticity".

As shown in FIG. 5, the holding body 32 is provided on the same edge side of the inner cylindrical body 12 as the fixed end 30a of the linking body 30. In the embodiment, the fixing end 30a of the linking body 30 is set at the upper edge of the cylindrical body 12, the holder 32 is provided on the upper edge side of the inner cylindrical body 12 correspondingly. The holding body 32 is arranged below the fixed end 30a of the linking body 30 at the upper edge of the inner tubular body 12 . Between the holding body 32 and the outer surface of the inner cylindrical body 12, the guide part 34 of the linking body 30 is arranged to pass vertically, and the locking part 36 is arranged below the holding body 32 ( 7 and 8). The holding member 32 allows the vertical sliding displacement of the guide portion 34 accompanying the relative vertical displacement of the cylindrical members 12, 12 adjacent to each other on the inner and outer sides, while the holding member 32 is caught by the engaging portion 36. It is configured to restrict upward displacement of the locking portion 36 beyond 32 . Specifically, the holding body 32 is fixed to the outer surface of the upper edge of the inner cylindrical body 12 so as to define an insertion space between the outer surface of the cylindrical body 12 and the guide part 34 to pass through. (see FIG. 9). Both edges in the width direction of the holding body 32 are fixed to the inner cylindrical body 12 by sewing or the like, and an intermediate portion between both ends in the width direction can contact or separate from the outer surface of the inner cylindrical body 12. It is formed in a cylindrical shape in a free state. The guide portion 34 of the linking body 30 is vertically inserted into the insertion space defined by the holding body 32 , and the fixed end 30 a of the linking body 30 is positioned above the holding body 32 . The engaging portion 36 (locking end 30b) of the linking member 30 is located at the bottom of the connecting member 30. As shown in FIG. The holding body 32 is formed so that the width of the insertion space is larger than the width of the guide portion 34 and smaller than the width of the engaging portion 36. Although the guide portion 34 is passed vertically, the engaging portion 36 is is caught on itself and does not pass.

The holder 32 can be made of a solid body or a foamed body of a synthetic resin such as polyethylene, and it is preferable to use a foamed body with a low expansion ratio because it can be made lighter. It is preferable that the holding body 32 has elasticity that allows it to bend when an external force is applied and that it returns to its original state in a natural state where no external force is applied, and has a shape-retaining property that can hold the linking body 30. A low-foam polyethylene sheet is suitable because it is lightweight and has "elasticity".

In the linking mechanism 14 of the embodiment, the locking end 30b at the lower end of the linking body 30 is fixed to the inner surface of the outer cylindrical body 12, so that the fixed portion of the locking end 30b is caught by the holding body 32 to hold the body. Upward displacement of the fixed portion beyond the body 32 is restricted. Therefore, in the linking member 30 , not only the portion of the locking portion 36 extending in the width direction beyond the guide portion 34 but also the portion fixed to the cylindrical body 12 can function as the locking portion 36 . In addition, since the fixed end 30a at the upper end of the linking body 30 is fixed to the inner surface of the outer cylindrical body 12, the fixed end 30a is caught by the holding body 32, and the fixed end 30a beyond the holding body 32 is moved downward. Displacement is regulated.

As shown in FIGS. 1 and 5, the telescopic cover 10 has the third cylindrical body 12D inside the fourth cylindrical body 12D in the contracted state in which the first to fourth cylindrical bodies 12A, 12B, 12C, and 12D are on the ground. ˜The first cylindrical bodies 12C, 12B, and 12A are housed, and the overall height is the lowest. In the retracted state of the telescopic cover 10, the linking mechanism 14 has the linking body 30 in which the upper portion of the guide portion 34 passes through the holding body 32 (see FIGS. 7(a) and 8(a)). In the extensible cover 10, the fixed end 30a of the linking body 30 is caught by the holding body 32, and the downward displacement of the outer cylindrical body 12 with respect to the inner cylindrical body 12 is restricted, so that the cylindrical body 12 falls off downward. not falling apart.

When adjusting the height of the extensible cover 10, when the outer fourth cylindrical body 12D is lifted, the guiding part 34 is guided by the holding body 32 provided on the third cylindrical body 12C adjacent to the inner side. , the linking body 30 provided on the fourth cylindrical body 12D also rises (see FIG. 8(b)). Further, when the fourth tubular body 12D is lifted, the locking portion 36 of the linking body 30 provided on the fourth tubular body 12D is caught by the holding body 32 provided on the third tubular body 12C, and the holding body 32 and the locking portion 36 restricts the relative upward displacement of the fourth tubular body 12D with respect to the third tubular body 12C (see FIG. 8(c)). Furthermore, when the fourth tubular body 12D is lifted, the third tubular body 12C is supported by the linking mechanism 14 between the fourth tubular body 12D and the third tubular body 12C. 12D is lifted, and under the guide portion 34 being guided by the holding body 32 provided on the second cylindrical body 12B adjacent to the inner side, the linking body 30 provided on the third cylindrical body 12C also rises. . Further, when the fourth tubular body 12D is lifted, the locking portion 36 of the linking body 30 provided on the third tubular body 12C is caught by the holding body 32 provided on the second tubular body 12B, and the holding body 32 and the locking portion 36 restricts the relative upward displacement of the third cylindrical body 12C with respect to the second cylindrical body 12B. Furthermore, when the fourth tubular body 12D is lifted, the linking mechanism 14 between the fourth tubular body 12D and the third tubular body 12C and the linking mechanism between the third tubular body 12C and the second tubular body 12B 14, the second tubular body 12B and the third tubular body 12C are lifted in conjunction with the fourth tubular body 12D, and the holder 32 provided on the first tubular body 12A adjacent to the inner side. With the guide portion 34 being guided by the second cylindrical body 12B, the linking body 30 provided on the second tubular body 12B also rises (see FIG. 7(b)). Further, when the fourth tubular body 12D is lifted, the locking portion 36 of the linking body 30 provided on the second tubular body 12B is caught by the holding body 32 provided on the first tubular body 12A (see FIG. 7 ( c)), at this time the telescopic cover 10 is stretched to the highest level (see FIGS. 2 and 6). In this way, in the extensible cover 10, when the outer cylindrical body 12 is lifted, the inner cylindrical body 12 is lifted and extended by the linking mechanism 14 that links the inner and outer cylindrical bodies 12, 12 adjacent to each other.

When the fourth cylindrical body 12D is lowered, the telescopic cover 10 is linked by the linking mechanism 14 supported by the retaining part 36 of the linking body 30 being caught by the holding body 32 due to the weight of the inner cylindrical body 12. -3 cylindrical bodies 12B and 12C also descend integrally. When the fourth tubular body 12D is lowered and the second tubular body 12B touches the ground and stops, the guide portion 34 of the linking body 30 of the third tubular body 12C is engaged with the holding body 32 of the second tubular body 12B. Under the guidance, the third tubular body 12C linked by the linking mechanism 14 descends as the fourth tubular body 12D descends. When the fourth tubular body 12D is lowered and the third tubular body 12C touches the ground and stops, the guide portion 34 of the linking body 30 of the fourth tubular body 12D is engaged with the holding body 32 of the third tubular body 12C. The fourth cylindrical body 12D descends while being guided, and when the fourth cylindrical body 12D touches the ground, it returns to the contracted state. When the telescopic cover 10 is to be stopped in a stretched state of a certain height, a case C in which the positioning part 24 spanned back and forth across the upper opening and/or the lid part 16 closing the upper opening is stored in the storage space. By stopping the fourth cylindrical body 12D by hooking it on the upper end of the , the stretched state can be maintained (see FIG. 10).

When the cylindrical body 12 is expanded and contracted, the linking mechanism 14 described above is guided by the holding body 32 so that the guide portion 34 of the linking body 30 is restricted from moving in the longitudinal and lateral directions other than the vertical direction. The connecting member 30 moves up and down as the tubular member 12 to which the 30a is fixed is displaced vertically. In addition, since the linking body 30 is vertically displaced in the same posture as the cylindrical body 12 is vertically displaced, it is not necessary to deform such as by folding back when the top and bottom are reversed. Since the linking body 30 is guided while its posture is held by the holding body 32 in this manner, the linking body 30 is prevented from being bent or caught on the cylindrical body 12, and the linking mechanism 14 is kept in a cylindrical shape. It smoothly interlocks with the displacement of the body 12 . Therefore, since the extensible cover 10 links the plurality of cylindrical bodies 12 by the linking mechanism 14 that smoothly interlocks, the cylindrical bodies 12 can be expanded or contracted smoothly. Since the guide portion 34 of the linking body 30 passing through the holding body 32 is guided by the holding body 32 to define the displacement path, the linking mechanism 14 guides the vertical displacement path of the cylindrical body 12 to be straight. be able to. As a result, the telescopic cover 10 can prevent the cylindrical bodies 12, 12 from being obliquely engaged with each other by the linking mechanism 14, so that the cylindrical body 12 can be extended or contracted smoothly.

In the linking mechanism 14, since the linking body 30 guided by the holding body 32 is a plate-like body, the guide part 34 of the linking body 30 is engaged with the holding body 32 so that the guide part 34 functions like a column. , the displacement path of the cylindrical body 12 can be guided to be straight. As a result, the telescopic cover 10 can prevent the cylindrical bodies 12, 12 from being obliquely engaged with each other by the linking mechanism 14, so that the cylindrical body 12 can be extended or contracted smoothly. In addition, the linking member 30, which is a plate-like member provided along the wall portion of the cylindrical member 12, can function as a support that assists the rigidity of the wall portion.

Since both ends of a fixed end 30a at one end of the linking body 30 and a locking end 30b at the other end of the linking mechanism 14 are fixed to the cylindrical body 12, the linking body 30 can be moved along the wall of the cylindrical body 12. can be placed together. As a result, the posture of the linking body 30 is maintained, so that the effect of guiding the vertical displacement of the cylindrical body 12 by the linking mechanism 14 can be improved.

The linking mechanism 14 has a structure in which the fixed end 30a of the linking body 30 is fixed to the upper edge of the outer cylindrical body 12, and correspondingly the holding body 32 is provided on the upper edge side of the inner cylindrical body 12. Thus, it is possible to link the inner cylindrical body 12 with the upward displacement of the outer cylindrical body 12 . By doing so, when the cylindrical body 12 is extended, the guide portion 34 of the linking body 30 is exposed inside the cylindrical body 12, and the linking body 30 and the holding body 32 of the linking mechanism 14 are separated. The linking mechanism 14 is not exposed to the outside of the telescopic cover 10 and can be prevented from interfering with the outside such as being caught by a carriage or the like.

The telescopic cover 10 is provided with linking mechanisms 14 on respective side surfaces of the cylindrical body 12 that face each other across the storage space. Therefore, the telescopic cover 10 is guided and supported from both sides of the tubular body 12 in a well-balanced manner by the two linking mechanisms 14, 14 arranged across the storage space. can be performed more smoothly.

(Change example)
The configuration is not limited to the configuration of the embodiment described above, and may be modified as follows, for example.
(1) In the embodiment, of the cylindrical bodies that are adjacent to each other on the inner and outer sides in the contracted state, the connecting member is provided on the inner surface of the outer cylindrical body, and the holding body is provided on the outer surface of the inner cylindrical body. On the contrary, of the cylindrical bodies adjacent to each other inside and outside in the reduced state, the inner cylindrical body is provided with the connecting member on the outer surface, and the outer cylindrical body is provided with the holding member on the inner surface. good too. At this time, the inner cylindrical body is sequentially lifted and stretched.
(2) In the embodiment, the fixed end of the linking member is fixed to the upper edge of the tubular body, and the holding member is provided on the upper edge side of the tubular body corresponding to this. Alternatively, the fixed end of the linking member may be fixed to the lower edge of the tubular body, and the holding member may be provided on the lower edge side of the tubular body correspondingly. At this time, the inner cylindrical body is sequentially lifted and stretched.
(3) In the embodiment, the locking end of the linking body is fixed to the cylindrical body, but the connecting body can be fixed to the cylindrical body only at the fixed end without fixing the locking end to the cylindrical body. good. In this case, the connecting member may be provided with a locking portion projecting from the guide portion.
(4) In the embodiment, the linking member is provided with a locking portion protruding from the guide portion. You may set it as a stop part.
(5) A bottom may be provided on the cylindrical body that is the lowest stage in the stretched state. Moreover, it is preferable that the lid portion is provided on the uppermost cylindrical body in the expanded state.

The present disclosure includes the following inventions.
Invention A
A contracted state in which a plurality of tubular bodies are provided in a nested structure, and the plurality of tubular bodies are accommodated in order; A linking mechanism for linking tubular bodies adjacent to each other inside and outside in the contracted state so as to be expandable and contractible,
a linking member provided on a surface of one of the cylindrical bodies adjacent to each other in the contracted state, which faces the other cylindrical body in the contracted state;
a holder provided on a surface of the other of the cylindrical bodies adjacent to each other inside and outside in the contracted state, facing one of the cylindrical bodies in the contracted state;
The linking body includes a guide part extending vertically along the surface of the one cylindrical body through the holding body, and a locking part locked to the holding body. It is a linkage mechanism of

10 telescopic cover, 12 cylindrical body, 12A first cylindrical body, 12B second cylindrical body,
12C third cylindrical body, 12D fourth cylindrical body, 14 linking mechanism, 30 linking body,
32 holder, 34 guide part, 36 locking part

Claims (6)

A plurality of cylindrical bodies having a nested structure are provided, and a contracted state in which a small cylindrical body is housed inside a large cylindrical body, and in the contracted state, the cylindrical bodies adjacent to each other inside and outside are relatively shifted up and down. In the extensible cover configured to be able to expand and contract between the expanded state displaced to the contracted state, a linking mechanism for expanding and contracting cylindrical bodies adjacent to each other in the contracted state,
In one of the cylindrical bodies adjacent inside and outside in the contracted state, provided on a surface facing the other cylindrical body in the contracted state, the upper edge portion or the lower edge portion of the one cylindrical body a linking body having one end fixed to one of
a holder provided on a surface of the other of the cylindrical bodies adjacent to each other inside and outside in the contracted state, facing one of the cylindrical bodies in the contracted state;
The linker is
A guide portion extending vertically along the surface of the one cylindrical body from a fixed end at one end of the linking member and held by the holding member so as to be restricted from being displaced in a direction intersecting the vertical direction. When,
a locking portion provided in series with the guide portion at the other end of the linking body opposite to the fixed end;
with
The holding body is provided at the edge on the same side as the fixed end of the linking body , out of the upper edge and the lower edge of the other cylindrical body, and is arranged to support the vertically adjacent cylindrical bodies. It is configured to allow vertical sliding displacement of the guide portion accompanying relative displacement, while restricting displacement of the engaging portion beyond the holding body by being caught by the engaging portion. A linking mechanism for a telescopic cover characterized by: A plurality of cylindrical bodies having a nested structure are provided, and a contracted state in which a small cylindrical body is accommodated inside a large cylindrical body, and in the contracted state, the cylindrical bodies adjacent to each other inside and outside are relatively shifted up and down. In a telescopic cover configured to be able to expand and contract between a stretched state displaced to , a linking mechanism for stretchably linking cylindrical bodies adjacent inside and outside in the contracted state,
In one of the inner and outer adjacent cylindrical bodies in the contracted state, provided on the surface facing the other cylindrical body in the contracted state, the upper edge portion or the lower edge portion of the one cylindrical body a linking body having one end fixed to one of
a holder provided on a surface of the other of the cylindrical bodies adjacent to each other inside and outside in the contracted state, facing the one of the cylindrical bodies in the contracted state;
The linker is
A guide portion extending vertically along the surface of the one cylindrical body from a fixed end at one end of the linking member and held by the holding member so as to be restricted from being displaced in a direction intersecting the vertical direction. When,
a locking portion provided in series with the guide portion at the other end of the linking body opposite to the fixed end;
with
The holding body is provided at the edge on the same side as the fixed end of the linking body, out of the upper edge and the lower edge of the other cylindrical body, to support the vertically adjacent cylindrical bodies. while allowing the guide portion to slide in the vertical direction due to relative displacement, it is configured to be caught by the locking portion and restrict displacement of the locking portion beyond the holding body,
The other end of the linking body opposite to the fixed end is fixed to the edge of the one cylindrical body opposite to the edge to which the fixed end is fixed.
characterized by Linkage mechanism of the telescopic cover. A plurality of cylindrical bodies having a nested structure are provided, and a contracted state in which a small cylindrical body is accommodated inside a large cylindrical body, and in the contracted state, the cylindrical bodies adjacent to each other inside and outside are relatively shifted up and down. In the extensible cover configured to be able to expand and contract between the expanded state displaced to the contracted state, a linking mechanism for expanding and contracting cylindrical bodies adjacent to each other in the contracted state,
In one of the cylindrical bodies adjacent inside and outside in the contracted state, provided on a surface facing the other cylindrical body in the contracted state, the upper edge portion or the lower edge portion of the one cylindrical body a linking body having one end fixed to one of
a holder provided on a surface of the other of the cylindrical bodies adjacent to each other inside and outside in the contracted state, facing one of the cylindrical bodies in the contracted state;
The linker is
A guide portion extending vertically along the surface of the one cylindrical body from a fixed end at one end of the linking member and held by the holding member so as to be restricted from being displaced in a direction intersecting the vertical direction. When,
a locking portion provided in series with the guide portion at the other end of the linking body opposite to the fixed end;
with
The holding body is provided at the edge on the same side as the fixed end of the linking body, out of the upper edge and the lower edge of the other cylindrical body, and is arranged to support the vertically adjacent cylindrical bodies. while allowing the guide portion to slide in the vertical direction due to relative displacement, it is configured to be caught by the locking portion and restrict displacement of the locking portion beyond the holding body,
The linking body has an upper end, which is the fixed end, fixed to the inner surface of the upper edge portion of the tubular body located outside in the contracted state, and extends along the inner surface from above and below the inner surface. provided in
The holding body is fixed to the outer surface of the tubular body located inside in the contracted state on the upper edge side, and defines a space between the holding body and the outer surface of the tubular body through which the guide section can pass. formed to
characterized by Linkage mechanism of the telescopic cover. 4. The linking mechanism of the extensible cover according to claim 1, wherein the linking body is a plate-like body . A telescopic cover comprising the telescopic cover linkage mechanism according to any one of claims 1 to 4. The tubular body is a rectangular tube,
6. The telescopic cover according to claim 5, wherein said linking mechanism is provided on at least one pair of side surfaces of said cylindrical body facing each other across an inner storage space.

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