JP2009006938A - Interior cover of truck for cargo work - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prolong a useful life of an interior cover 9 foldable for cold thermal insulation, warm-keeping and dust prevention of a stored article mounted to the inner side of a panel adjacent to a baggage storage space so as to surround the baggage storage space on a base 3 of the truck 1 for cargo work. <P>SOLUTION: Hard reinforcement thin stripe members 24, 26a and 26b are attached to sheets 11, 12 and 15 having creases for folding on intermediate fixed portions of a plurality of the sheets 10-12, 15 constituting the interior cover 9 along a bottom crease line of the crease. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a foldable interior cover that is attached to the inside of a panel adjacent to a load storage space so as to surround the load storage space on the base of a cargo handling cart for cold storage, heat retention, dust prevention, etc. Is.

As a foldable cargo handling cart, it has a back panel, a base that can be folded up in an upright position that overlaps the inside of the back panel, and a pair of left and right side panels that extend right and left from the left and right sides of the back panel. There is known a cargo handling cart having a structure in which one of the side panels is connected to the back panel so as to be openable and closable so that the side panel can be switched to a folded posture overlapping the inside of the base in the standing posture. And as an interior cover mainly for cold insulation set inside the panel so as to surround the load storage space on the base surrounded by each panel in this kind of foldable cargo handling cart, for example, as described in Patent Document 1 As described above, a back seat portion along the inside of the back panel, a side seat portion along the inside of the left and right side panels, and an openable / closable seat portion that closes between the upper side and the front side of the left and right side seat portions. It has been known. Thus, the interior cover of this kind of cargo trolley is configured so that it can be folded into a form that does not hinder the folding of the truck prior to the folding of the cargo trolley. In each of the surface sheet portions to be configured, a sheet portion that is folded at an intermediate position of the sheet portion as well as being folded at the stitching side position with the adjacent sheet portion may be incorporated.
Japanese Patent Laid-Open No. 11-5540

  When there is a seat part that can be folded at an intermediate position in the interior cover as described above, in the conventional one, no special reinforcement measures have been taken against the folding line that exists at the intermediate position of the seat part. Therefore, there is a high possibility that the crease part is broken while the folding is repeatedly performed, which has an adverse effect on the useful life of the entire cover.

  The object of the present invention is to provide an interior cover for a cargo trolley that can solve the above-mentioned conventional problems. The interior cover for a cargo trolley according to claim 1 will be described later. When shown with reference numerals in the embodiment, a foldable interior that is attached to the inside of the panels 2, 4, 5 adjacent to the load storage space so as to surround the load storage space on the base 3 of the cargo handling cart 1. Among the plurality of sheet portions 10 to 12 and 15 that constitute the interior cover 9, the sheet portions 11, 12, and 15 having folds for folding at a fixed intermediate position are included in the valleys of the folds. A rigid reinforcing strip member 24, 26a, 26b is attached along the fold line.

  The cargo handling cart 1 includes a back panel 2, a base 3 that can be folded up in an upright position on the inside of the back panel 2, and a pair of left and right side panels that extend right and left forward from the left and right sides of the back panel 2. 4 and 5, one of the side panels 4, 5 is connected to the back panel 2 so as to be openable and closable so that the side panel 5 can be switched to a folded position overlapping the upright base 3. A cover 9 is provided from the back sheet portion 10 along the inner side of the back panel 2, the side sheet portions 11 and 12 along the inner sides of the left and right side panels 4 and 5, and the upper and lower sides of the back sheet 10 portion. The left and right side seat portions include an openable / closable seat portion 15 connected by fasteners 13 and 14 so as to be openable and closable from the lower side to the upper side and the front side of the seat portion. When the openable / closable sheet portion 15 separated from the first and the second cover portions is an interior cover 9 configured to be foldable outwardly, the outer openable sheet portion 15 has an outer surface on the surface side of the openable / closable sheet portion 15 as described in claim 2. Hard reinforcing strip members 26a and 26b can be attached along the valley fold line at the time of winding and folding.

  The cargo handling cart 1 includes a back panel 2, a base 3 that can be folded up in an upright position on the inner side of the back panel 2, and a pair of left and right side panels that extend right and left from the left and right sides of the back panel 2. 4 and 5, one of the side panels 4, 5 is connected to the back panel 2 so as to be openable and closable so that the side panel 5 can be switched to a folded position overlapping the upright base 3. A cover 9 is provided from the back sheet portion 10 along the inside of the back panel 2, the side sheet portions 11 and 12 along the inside of the left and right side panels 4, 5, and the upper side of the back sheet portion 10. There is provided an openable / closable seat portion 15 that closes between the upper side and the front side of the seat portions 11 and 12, and at least of the left and right side seat portions 11 and 12, the openable side panel. 5, the side seat portion 12 on the side adjacent to 5 is an interior cover 9 whose lower half portion 12 b is configured to be foldable inward and upward, according to claim 3, the foldable side seat portion. A rigid reinforcing strip member 24 can be attached to the inner side surface of 12 along a valley fold line between the upper half 12a and the lower half 12b.

  According to the interior cover of the cargo trolley according to the first to third aspects of the present invention, for example, the cargo trolley to which the interior cover is attached is foldable, and the interior cover is attached prior to folding of the trolley. In the case of folding, when a sheet portion having a fold for folding is not folded on the side of the sheet surface, but in a fixed intermediate position, among the sheet portions on each surface, the sheet portion is attached along the valley fold line. It is folded so as to enclose the hard reinforcing strip member. That is, as when this reinforcing strip member does not exist, it will not be folded so that the valley fold line is firmly attached, and it will be folded so as to wind up the reinforcing strip member. Even if this folding is repeatedly performed, there is almost no possibility that the seat portion breaks along the valley fold line, and the useful life of the entire interior cover can be prolonged. In addition, the valley folding position is clarified by the reinforcing strip member, and it becomes easy to accurately fold the seat portion along the intended valley fold line, so that the workability of folding the entire interior cover is improved. Can be increased.

  A specific embodiment of the present invention will be described below with reference to the accompanying drawings. The foldable cargo handling cart 1 shown in FIGS. 1 and 2 is a well-known conventional one, and includes a back panel 2 and a bottom of the back panel 2. A base 3 whose rear side is pivotally supported up and down on the side, a pair of left and right side panels 4 and 5 extending from the left and right sides of the back panel 2 toward the front at right angles, and both the left and right side panels 4 5 is composed of wheels 6 attached to the lower sides of the lower side of the front and rear ends via attachment seats 6a, and the right side panel 5 faces the folding position and the back panel 2 overlapping the inner side of the back panel 2. It is connected to the side of the back panel 2 so as to be horizontally openable and closable with a right-angled forward use posture. When the cargo handling cart 1 is not in use, the right side panel 5 is horizontally moved inward in a state where the base 3 is folded in an upright posture along the inside of the back panel 2, as shown in FIG. Further, the base 3 in an upright position is sandwiched between the right side panel 5 and the back panel 2 and can be folded into an L shape in a plan view. Base holding means 7 for holding the base 3 is provided.

  As shown in FIGS. 2A and 2B, the base holding means 7 includes a hemispherical protrusion 8a provided on the side of the base 3 so as to be retractable against elasticity. As shown in the figure, there is known one having a pin-like protrusion 8b protruding from the side of the base 3 and capable of being withdrawn / retracted. In the base holding means 7 having the former hemispherical projection 8a, as shown in FIG. 2A, the space between the back panel 2 and the left and right sides of the base 3 is wide. The base holding means 7 is provided with a protrusion 8a only on the side adjacent to the right side panel 5, and the latter is provided with a pin-like protrusion 8b that can be moved in and out. , 5 is also used as a means for engaging the base 3 with the lower sides of the left and right side panels 4, 5 in the use posture (horizontal lying posture) supported by the lower side of the base 3. A pin-shaped protrusion 8b that can be operated to be withdrawn / retracted from the side is provided, and a pair of left and right pin-shaped protrusions 8b can be operated at the same time by an operation tool provided on the front side of the base 3.

  Thus, in the base holding means 7 having the hemispherical projection 8a, when the base 3 is folded in the standing posture, when passing the side of the vertical frame 5c on the rear side of the side panel 5 immediately before it. In addition, the protrusion 8a that retreats against the elasticity by the vertical frame portion 5c is fitted between the rear side of the side panel 5 and the side of the back panel 2 on the rear side by elastic return. The base 3 is held in a standing posture, and when the base 3 is turned down to a horizontal use posture, the base 3 may be strongly pushed forward. On the other hand, in the base holding means 7 provided with the pin-shaped protrusions 8b that can be moved out and retracted, the base 3 is folded in an upright position with the pair of left and right protrusions 8b retracted by the operation tool, and then the operation tool And the pair of left and right protrusions 8b are advanced to fit between the rear sides of the left and right side panels 4 and 5 and the rear side of the back panel 2 so that the base 3 stands upright. When the base 3 is turned down to the horizontal use posture, the pair of left and right protrusions 8b are retracted with the operation tool before that.

  The interior cover 9 of the present invention shown in FIG. 3 is used by being set on the foldable cargo handling carriage 1 as described above, and includes a back seat portion 10 along the inner side of the back panel 2, and both left and right side panels. 4 and 5, the side seat portions 11 and 12, which are continuous from the upper side of the back seat portion 10, and the left and right sides are fasteners 13 with respect to the upper and front sides of the left and right side seat portions 11 and 12. , 14, and an openable and closable sheet portion 15 having an inverted side view, and a base sheet portion 16 that is continuously provided from the lower side of the backsheet portion 10 and placed on the base 3. .

  The interior cover 9 has belt fastener-attached belts 17a and 17b, which are attached upwards at two symmetrical positions on the upper side of the back seat portion 10, and left and right side seat portions 11 and 12 as attachment means to the cargo handling carriage 1. Belts with hook-and-loop fasteners 18a and 18b attached upward at each one position near the front end of the upper side of each of the front and rear sides from the middle height positions (details will be described later) of the front and rear sides of the left and right side seat portions 11 and 12 respectively. Belts with hook-and-loop fasteners 19a to 20b attached in the direction, belts with hook-and-loop fasteners 21a and 21b attached to one front side of the front side sides of the left and right side seat parts 11 and 12, and base sheet part 16 Belts 22a and 22b with hook-and-loop fasteners attached downward at two symmetrical positions near the front side on the bottom of ing. FIG. 4 shows a state in which the interior cover 9 is attached to the cargo handling cart 1 with these belt fastener-attached belts 17a to 22b. In the illustrated cargo handling cart 1, a stay 23 that is freely detachable between the left and right side panels 4 and 5 is installed.

  Next, the structure of the interior cover 9 will be described in detail. The left and right side seat portions 11, 12 are arranged at the intermediate height position on the rear side, that is, from the lower side of the left and right side seat portions 11, 12, to the base 3 Only the rear side edges ab, cd of the upper upper half portions 11a, 12a from the position separated by a distance equal to or slightly larger than the width in the front-rear depth direction (height in the standing posture). The left and right sides ab and cd of the corresponding upper half 10a of the backsheet portion 10 are joined and integrated by stitching, and the lower halves 11b and 12b below the upper halves 11a and 12a are connected to the inner upper side. It is configured so that it can be raised. Further, on the inner side surfaces of the side seat portions 11 and 12, for reinforcement made of hard synthetic resin at the boundary between the upper half portions 11a and 12a and the lower half portions 11b and 12b of the left and right side seat portions 11 and 12, respectively. The strip member 24 is sewn over substantially the entire width along the folding line when the lower half portions 11b and 12b of the side seat portions 11 and 12 are raised, and the reinforcing strip member 24 is used as a valley fold line. As the locking means 58 for holding the side sheet parts 11 and 12 folded up by folding the half parts 11b and 12b, the position near the lower side of the inner surface of each side sheet part 11 and 12, Band-shaped surface fasteners 25a and 25b that are separable from each other are sewn over substantially the entire width of the side seat portions 11 and 12 at a position and an inner surface intermediate position that is vertically symmetric about the reinforcing strip member 24 as an axis of symmetry. Yes.

  As shown in FIG. 6, the openable / closable sheet portion 15 includes a pair of left and right narrow strip portions 15 a and 15 b joined to the left and right sides by fasteners 13 and 14 over the entire length in the vertical direction. The outer sides aef and cgh of 15a and 15b are on the upper sides ae and cg and the front sides ef and gh of the side seat portions 11 and 12 shown in FIG. By being combined and integrated by stitching, the openable / closable sheet portion 15 can be opened and closed from the lower side by opening the fasteners 13 and 14. And, on the outer side surface of the openable / closable sheet part 15, there are two upper and lower parts when the entire length of the openable / closable sheet part 15 is slightly shorter than the length obtained by dividing it into three equal parts and is folded in three from the lower side to the outer winding. The reinforcing strip members 26a and 26b made of hard synthetic resin are sewn over substantially the entire width along the valley fold line.

  Thus, an openable / closable sheet portion locking means 40 is provided for holding the openable / closable sheet portion 15 that is formed by folding the reinforcing strip members 26a and 26b into the outer fold from the lower side with the valley fold line. Yes. As shown in FIG. 5, the openable / closable sheet portion locking means 40 includes a locking belt 41 continuously provided upward from the center position of the upper side of the backsheet portion 10, and an outer winding as shown in FIG. 6A. It is composed of hook-and-loop fasteners 42a and 42b that are attached to the engagement belt 41 so as to be able to be joined and peeled from each other at the position near the upper side of the inner side face that faces outward of the foldable openable / closable seat portion 15.

  As is well known in the art, each sheet portion of this type of interior cover 9 used for cold insulation and warm insulation is provided with exterior materials 27a and 27b such as aluminum foil and synthetic resin sheet as shown in FIG. 6B. A sandwich structure sandwiching the heat insulating material 28 is used, but the mounting valley fold line of the reinforcing strip member 24 in the left and right side seat portions 11, 12 and the reinforcing strip member 26a in the openable / closable seat portion 15 are provided. As shown in FIG. 6B, the reinforcing strip members 24, 26a, and 26b may be sewn while the heat insulating material 28 exists, as shown in FIG. 6B, or as shown in FIG. 6C. In addition, in order to further facilitate the valley folding, the insulating material 28 is divided on both sides of the valley folding line, and the reinforcing strip members 24, 26a, 26b are sewn in a state where the front and back exterior materials 27a, 27b are in contact with each other. You may wear it.

  The lower side edge ij of the back sheet portion 10 shown in FIG. 5 is joined and integrated with the rear side edge ij of the base sheet portion 16 shown in FIG. L-shaped flap units 29 and 30 are used to connect the left and right sides of the lower half 10b of the backsheet portion 10 shown in FIG. The flap units 29 and 30 are configured to be symmetrical with each other, and the lower end portion of the vertical flap portion 32 that becomes wider at the rear end portion of the front and rear depth direction flap portion 31 that becomes wider toward the rear. And a fold line 33 having a crease at an angle of 45 degrees when viewed from the outside, is formed at the corner between the flap portions 31 and 32. The left and right sides i-k, j-l of the portion 16 and the lower sides i-k, j-l of the flap units 29, 30 in the front-rear depth direction 31 are joined and integrated by stitching. Left and right sides b′-i, d′-j of the lower half portion 10b of the back sheet portion 10 shown in FIG. 4 and rear side sides b′-i, d′-j of the vertical flap portions 32 of the flap units 29, 30. Are joined and integrated by stitching

  When the back sheet portion 10 hangs down along the inner side of the back panel 2 and the base sheet portion 16 extends forward from the lower side of the back sheet portion 10 and is placed on the base 3, both left and right flaps are used. The units 29 and 30 are expanded along the vertical plane. In this state, when the lower half portions 11b and 12b of the left and right side seat portions 11 and 12 hanging along the inside of the left and right side panels 4 and 5 are adjacent to the inside of the left and right flap units 29 and 30, they are joined to each other. As shown in FIGS. 5 and 7, the positions near the lower side and the front and rear of the flap units 29 and 30 on the outer surface of the lower half portions 11 b and 12 b of the side seat portions 11 and 12, as shown in FIGS. Strip-shaped hook-and-loop fasteners 34a, 34b and 35a, 35b that can be joined and peeled from each other are sewn to the inner side surface of the depth-direction flap portion 31, and the outer side of the lower half portions 11b, 12b of the side seat portions 11, 12 are sewn. Strip-shaped hook-and-loop fasteners 36a, 36b and 3 that can be joined and separated from each other on the side surface in the vicinity of the rear side and the inner side surface of the vertical flap portion 32 of each flap unit 29, 30. a, 37b has been sewn. That is, the front and rear depth direction flap portions 31 and the hook-and-loop fasteners 34a, 34b and 35a, 35b of the flap units 29, 30 respectively have the left and right sides of the base seat portion 16 and the lower sides of the left and right side seat portions 11, 12. Left and right side side connecting means 38a, 38b are configured to detachably connect the left and right side seat parts 11, by the vertical flap part 32 and the surface fasteners 36a, 36b and 37a, 37b of the flap units 29, 30. Rear side connection means 39a and 39b are configured to detachably connect the rear side sides of the lower half portions 11b and 12b of the twelve sides and the left and right side sides of the back sheet portion 10 adjacent thereto.

  As shown in FIG. 9, the base sheet portion 16 is made of a hard synthetic resin on the surface side of a base material 43 (a laminated structure having heat insulation properties may be used similarly to other sheet portions, or not). By attaching the thin plate material 44, the base sheet portion is sufficiently hard as compared with other sheet portions, improves the sliding of the load on the load supporting surface and improves the wear resistance. Base connecting means 45 for connecting 16 to the base 3, base sheet part locking means 46 for locking the base sheet part 16 sandwiched between the base 3 and the back sheet part 10 in the standing posture, to the back sheet part 10, And the front side connection means 47 which connects the front side edge of the base sheet part 16, and the lower side edge of the openable / closable sheet part 15 so that separation is possible is provided.

  As shown in FIGS. 7 to 9, the base connecting means 45 includes hard thin plate members 48a and 48b obtained by cutting a pair of left and right hard synthetic resin plates attached to the bottom surface of the base sheet portion 16 into a mountain shape, and both The belts 22a and 22b with two surface fasteners are respectively inserted into slits 49 provided in the hard thin plate materials 48a and 48b. Each of the hard thin plate materials 48a and 48b has a bottom portion on the front side of the base sheet portion 16. The side is joined and integrated by stitching. Thus, as is well known, the base 3 is a synthetic resin molded product in which reinforcing steel materials (steel pipes, etc.) 3a in the lateral direction are embedded at appropriate intervals in the front-rear direction. Since it is formed into a mesh structure, the two front and rear meshes 3b and 3c at the left and right symmetrical positions of the base 3 are used at both ends of the two belt fastener-attached belts 22a and 22b as shown in FIG. Then, the base sheet portion 16 is attached to the base 3 by joining the both end surfaces to each other with hook-and-loop fasteners while the belts 22a and 22b with hook-and-loop fasteners are tensioned on the bottom side of the base 3. 3 is fixed. In this case, as shown in FIG. 9, it is desirable to tighten the base 3 at a position where the belts 22 a and 22 b with hook-and-loop fasteners embrace the reinforcing steel material 3 a embedded in the base 3. Of course, in consideration of the case where the structure of the base 3 of the cargo handling carriage 1 to which the interior cover 9 is attached is not constant, a plurality of slits 49 through which the belts 22a and 22b with hook-and-loop fasteners are inserted into the respective hard thin plate members 48a and 48b. Can be disposed at different positions, and as shown in the drawing, through holes 50 through which the string members for tightening can be inserted can be disposed at a plurality of locations.

  The base sheet portion locking means 46 includes a left and right flap portion 51 attached by stitching along the front side kl on the surface side of the base sheet portion 16 shown in FIG. 7, and the base sheet portion 16 is integrated with the base 3. The upper side is sewn at an intermediate height position on the inner side surface of the back seat portion 10 so that it can be brought into contact with the outer side surface of the lateral flap portion 51 when folded in an upright posture along the inner side of the back seat portion 10. And a belt-shaped hook-and-loop fastener 53a, 53b that is sewn between the outer side surface of the left-right direction flap portion 51 and the inner side surface of the locking piece 52 and can be separated from each other. Has been.

  The front side connecting means 47 includes a left and right direction flap part 51 constituting the base sheet part locking means 46, and the vicinity of the lower side of the outer side surface of the left and right direction flap part 51 and the inner side surface of the openable / closable seat part 15. The belt-shaped hook-and-loop fasteners 53a and 53c are sewn at positions and can be joined and peeled from each other. The left-right flap portion 51 has a length in the left-right direction that can be adjacent over substantially the entire width of the openable / closable seat portion 15, and the hook-and-loop fasteners 53 a and 53 c are also substantially equal to the entire length of the left-right direction flap portion 51. Have On the other hand, the base sheet portion locking means 46 only needs to be able to hold the base 3 (base sheet portion 16) in an upright posture, so that the locking piece 52 is provided only at the central portion of the left and right flap portion 51. , 53b is sufficiently shorter than the entire length of the left and right direction flap portion 51 so that they can be joined together.

  As shown in FIG. 9, the left and right flap portions 51 attached to the surface side of the base sheet portion 16 along the front side have the same structure as the other seat portions and have an appropriate thickness and hardness. In addition, it is possible to lie down in front and back if the sewing part to the base sheet part 16 is devised and applied with a force of a certain level or more, but generally it is possible to maintain a substantially standing posture with respect to the surface of the base sheet part 16 It is desirable to configure so that it is self-supporting.

  As shown in FIG. 10, the belt-attached belts 17 a to 21 b for attaching the interior cover 9 to the panels 2, 4, and 5 of the cargo handling cart 1 shown in FIG. 10 to 12 is sewn together with the hook-and-loop fastener 55a and extends outward from the respective seat portions 10 to 12, and the hook-and-loop fastener 55b is located at a position where it can be joined to the hook-and-loop fastener 55a when folded back on its free end side. Although it is sewn, when the belts 17a to 21b with the hook-and-loop fasteners are extended, the tongue pieces ( The belt is looped) 56). Further, all the belt fastener-attached belts 17a to 20b except the belt fastener-attached belts 21a and 21b attached to the positions near the lower ends of the front side edges of the left and right side seat parts 11 and 12 are sewn to the respective seat parts 10 to 12. Adjacent to the one end 54, a ring 57 through which the belts 17a to 20b with hook-and-loop fasteners are inserted is provided.

  A method of attaching the interior cover 9 configured as described above will be described with reference to FIGS. 1, 3, and 11 to 15. The back panel 2 of the cargo handling cart 1 assembled as shown in FIG. The back sheet portion 10 is arranged along the inner side, and the upper side thereof is coupled to the upper end horizontal frame portion 2a of the back panel 2 by means of belts 17a and 17b with hook-and-loop fasteners. The left and right side seat portions 11 and 12 suspended along the inner sides of the left and right side panels 4 and 5 have upper side horizontal frames 4a of the left and right side panels 4 and 5 at their upper sides by belt fasteners 18a and 18b with hook-and-loop fasteners. , 5a and the vertical frame portions 4b, 4c and 5b, 5c at the front and rear ends of the left and right side panels 4, 5 by the belt fasteners 19a, 19b and 20a, 20b at the intermediate height positions on both the front and rear sides. To join. Next, the base sheet portion 16 placed on the base 3 is coupled to the base 3 by the two belt fastener-attached belts 22a and 22b as described with reference to FIG.

  Thus, in the state in which the base 3 is supported and locked by the lower sides of the left and right side panels 4 and 5 in the horizontal use posture, the left and right sides of the lower half 10b of the back seat portion 10 and the base sheet Since the L-shaped flap units 29 and 30 that are continuous over the left and right sides of the portion 16 are in a vertical posture, the lower half portions 11b of the left and right side seat portions 11 and 12 are disposed inside the left and right flap units 29 and 30, respectively. 12b is suspended and the rear side and the lower side are pressed against the left and right flap units 29 and 30 from the inside, and the overlapping portions of the two are joined to each other by the hook-and-loop fasteners 34a to 37b. Thereafter, the positions near the lower ends of the front side edges of the left and right side seat portions 11, 12 are joined to the vertical frame portions 4b, 5b on the front end sides of the left and right side panels 4, 5 by means of belts 21a, 21b with hook-and-loop fasteners.

  As shown in FIG. 10, the belts 17a to 21b with the hook-and-loop fasteners are attached to the frame portions 2a, 4a to the panels 2, 4 and 5 in the fastening operation by the belts 17a to 21b with the hook-and-loop fasteners. 4c, 5a to 5c are wound from the inside, the free end side is pulled, and the surface fasteners 55a, 55b facing each other are pressed and joined to each other, but at this time, the tab tongue piece 56 is held in the state of being held by the opposite hand. The belts 17a to 21b with fasteners can be pulled strongly, and the pulling direction is a direction in which the sheet portions 10 to 12 are tensioned in the length direction or the width direction, so that the sheet portions 10 to 12 are attached without slack. be able to. In particular, the belt fasteners 17 a to 20 b can be pulled strongly with the belt free end side inserted through the ring 57.

  Since the attachment of the interior cover 9 to the cargo handling cart 1 is completed as described above, by opening the openable / closable seat portion 15 by opening the fasteners 13 and 14, the load in the load storage space surrounded by the interior cover 9 can be reduced. After that, the openable and closable seat portion 15 is closed by closing the fasteners 13 and 14, and the load storage space is sealed.

  The working method when the cargo handling cart 1 is folded into an L shape in plan view as shown in FIG. 2 will be described with reference to FIGS. 11 to 15. First, as shown in FIG. The openable / closable sheet part 15 is opened by the opening movement, and the openable / closable sheet part 15 is folded into three in an outer winding. At this time, since the valley fold line of the openable / closable sheet portion 15 is determined by the reinforcing strip members 26a, 26b, the trifolding operation of the openable / closable sheet portion 15 can be easily and accurately performed. Can be prevented by the presence of the reinforcing strip members 26a and 26b, and the service life can be extended. The openable / closable sheet portion 15 thus folded in three outer windings extends from the upper side of the backsheet portion 10 by the locking belt 41 and the hook-and-loop fasteners 42a and 42b of the openable / closable sheet portion locking means 40. Can be held in a suspended state from the upper end horizontal frame portion 2a of the back panel 2.

  Next, unfasten the belts 21a, 21b with hook-and-loop fasteners that fasten the positions near the lower ends of the front side edges of the left and right side seat portions 11, 12 to the vertical frame portions 4b, 5b on the front end sides of the left and right side panels 4, 5. Pull the rear side and the lower side of the lower half portions 11b, 12b of these side seat portions 11, 12 so as to be peeled off from the outer flap units 29, 30 to release the joining by the hook-and-loop fasteners 34a-37b. Thus, the lower half portions 11b and 12b of the left and right side seat portions 11 and 12 are brought into a free state. Since the ring 57 shown in FIG. 10 is not used in combination with the belt fasteners 21a, 21b operated at this time, the opening operation can be performed relatively easily. Thereafter, as shown in FIG. 12, the lower half portions 11b and 12b of the left and right side seat portions 11 and 12 are rolled up inward and folded into two, and at this time, the valley fold line is also a reinforcing strip. Since it is determined by the member 24, the left and right side sheet portions 11, 12 can be folded in a simple and accurate manner, and the side sheet portions 11, 12 are damaged at the valley fold line. It can be suppressed by the presence of, and the service life can be extended.

  The left and right side seat portions 11 and 12 that are folded inward as described above are formed on the lower side inner side surfaces of the left and right side seat portions 11 and 12 by the surface fasteners 25a and 25b of the locking means 58. By joining the inner side surfaces of the sheet portions 11 and 12 at a predetermined height position, the sheet portions 11 and 12 can be kept in a folded state.

  Thereafter, as shown in FIGS. 13 and 14, the base 3 is rotated upward and rearward together with the base sheet portion 16 fastened thereon, and folded into a standing posture. At this time, the left and right flap units 29, 30 falls inward with respect to the back sheet portion 10 and the base sheet portion 16 while being deformed so as to be closed inward at the valley fold line 33 at the intermediate corner portion, so that the front and rear depth direction flaps of the left and right flap units 29, 30 The base 3 and the base sheet part 16 can be folded in an upright position so that the part 31 and the vertical flap part 32 are sandwiched between the back sheet part 10 and the base sheet part 16. On the other hand, as shown in FIG. 13 and FIG. 14, the lower side level of the openable / closable sheet portion 15 held by the openable / closable sheet portion locking means 40 in a state of being folded in the outer winding state, and the inner winding folded state by the locking means 58 Since the lower side level of the left and right side seat parts 11, 12 held by the upper part is higher than the upper end level of the base 3 in the upright position, the openable / closable sheet part when the base 3 is folded together with the base sheet part 16 into the upright position. 15 and the left and right side seat portions 11 and 12 are not affected at all, and the base 3 can be easily folded, and the protruding portion 8a of the base holding means 7 protruding from the side of the base 3 can be used. (Or 8b) does not slidably contact the left and right side seat portions 11, 12.

  When the base 3 is folded together with the base sheet portion 16 to the upright posture, the side seat portion 12 does not exist between the base 3 and the right side panel 5 as described above. The hemispherical projection 8a of the base holding means 7 provided on the side of the base 3 on the right side panel 5 side is securely fitted to the rear side of the vertical frame 5c on the rear end side of the right side panel 5. Therefore, the base 3 can be securely held in the standing posture. In this state, as shown in FIGS. 13 and 14, the base 3 folded in an upright position by joining the left and right flap portions 51 and the locking pieces 52 of the base connecting means 45 with the hook-and-loop fasteners 53 a and 53 b. Can be further bonded to the back sheet portion 10 and held. Of course, according to the above embodiment, since the left side seat portion 11 is also configured in the same manner as the right side seat portion 12, a pin-like protrusion 8b that is moved out and with the operating tool as shown in FIG. 2C. Even in the cargo handling cart provided on the left and right sides of the base 3, the pin-like protrusions 8b on the left and right sides of the base 3 folded in a standing posture are connected to the rear end sides of the left and right side panels 4 and 5 vertically. The base 3 can be surely fitted in the rear side of the frame portions 4c and 5c, and can be reliably held in the standing posture.

  When the folded cargo trolley 1 is unfolded and reassembled, the unfolding operation of the cargo trolley 1 and the unfolding and assembling operation of the interior cover 9 are performed in the reverse order of the above-described cart folding operation. Just do it. When the interior cover 9 is removed from the cargo handling cart 1 and stored, the belts 17a to 22b with hook-and-loop fasteners are unfastened to remove the interior cover 9 from the cargo handling cart 1, and the folding operation of the openable / closable seat portion 15 is performed in an outwardly folded manner. And the latching operation by the openable / closable sheet portion locking means 40, the inner half folding operation of the lower half portions 11b and 12b of the left and right side seat portions 11 and 12, the locking operation by the locking means 58, and the backsheet portion 10 After the base sheet portion 16 is folded on the lower half portion 10b and the base sheet portion locking means 46 is sequentially engaged, the lower half portion 10b of the back sheet portion 10 together with the base sheet portion 16 is backsheet. Folded so as to overlap the upper half 10a of the portion 10, and folded into a bi-folded backsheet portion 10 on both right and left side seat portions 11, 1 The by folding to overlap, the entire interior cover 9 can be folded easily on the flat half 10a is substantially the same size on the backsheet portion 10. Of course, after folding the left and right side seat parts 11 and 12 in a folded state so as to overlap the inner side of the upper half part 10a of the back sheet part 10, the lower half part 10b of the back sheet part 10 is finally attached to the base sheet. It can be folded together with the portion 16 so as to overlap the inside of the upper half portion 10a of the backsheet portion 10.

  The entire structure of the interior cover 9 is not limited to that shown in the above embodiment. Therefore, since the folding structure of the seat portion in the interior cover also varies depending on the structure (folding structure) of the entire cargo handling trolley and the folding method, the seat that is likely to break along the crease when the folding is actually repeated on the interior cover. The reinforcing strip member may be attached along the valley fold line of the fold of the portion, and the sheet portion to which the reinforcing strip member is attached and the attaching portion are not limited to those shown in the above embodiment.

  The above embodiment will be described as an example. When the interior cover 9 removed from the cargo handling cart 1 is folded, the back sheet portion 10 is also folded as described above, and therefore, the upper half portion 10a and the lower half portion 10b thereof. It is also possible to attach a reinforcing strip member along the valley fold line therebetween. However, since the back sheet portion 10 is folded so as to sandwich another folded sheet portion, there is very little risk of breaking at the fold, so that the reinforcing strip as in the above embodiment is used. The attachment of the member can be omitted. In other words, the reinforcing strip member does not have to be attached along the valley fold line (the valley fold line existing at the intermediate position, not the side) of all the seat portions constituting the interior cover.

  Further, the method for attaching the reinforcing strip member is not limited to the sewing described in the above embodiment, and any method such as bonding or a combination of sewing and bonding may be used. Further, as the reinforcing strip member, a thin strip-shaped strip member convenient for sewing is shown, but it may have any cross-sectional shape such as a round bar shape or a pipe shape.

It is a perspective view which shows an example of the cart for cargo handling to which the interior cover of this invention is attached. Fig. A is a plan view showing a state in which the cargo handling cart is folded, Fig. B is an enlarged plan view of the main part showing a state in which the base holding means provided in the cargo handling cart is operated, and Fig. C is another structure of the base holding means. It is an enlarged plan view of the principal part shown. It is a perspective view which shows the assembly state of the interior cover which concerns on one Example of this invention. It is a perspective view which shows the state which attached the interior cover to the cart for cargo handling shown in FIG. FIG. 4 is a development view before sewing showing the back sheet portion and the left and right side seat portions of the interior cover from the inside (the seam of each stitched portion is omitted). Fig. A shows the openable seat part of the interior cover from the outside, development view before sewing (sewing allowance for each stitching part is omitted), and Fig. B is an enlargement of the main part showing the structure of the attachment part of the reinforcing strip member The longitudinal sectional side view and FIG. C are enlarged longitudinal sectional side views of the main part showing another structure of the attachment portion of the reinforcing strip member. FIG. 3 is a development view before sewing (the stitching allowance of each stitching portion is omitted) showing the base sheet portion of the interior cover and each flap portion stitched thereto from the inside. It is a bottom view of the principal part which shows a base connection means. It is an expanded vertical side view of the principal part which shows the connection structure of the base and base sheet part by a base connection means. FIG. 3A is an outer side view of a main part showing a use state of a belt with a hook-and-loop fastener, and FIG. It is a vertical side view which shows the 1st step when folding the cart for cargo handling. It is a vertical side view which shows the 2nd step. It is a vertical side view which shows the 3rd step. It is a front view showing the third stage. It is a front view showing the final stage.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Carriage truck 2 Back panel 3 Base 4, 5 Side panel 7 Base holding means 8a Semispherical projection part 8b Pin-shaped projection part 9 Interior cover 10 Back seat part 11, 12 Side seat part 13, 14 Fastener 15 Opening and closing Free sheet part 16 Base sheet part 17a-22b Belts 24, 26a, 26b with surface fasteners Reinforcing strip members 25a, 25b, 42a, 42b, 34a-37b, 53a-53c, 55a, 55b
Surface fasteners 29, 30 L-shaped flap unit 31 Front-rear depth direction flap part 32 Vertical flap part 33 Valley fold lines 38a, 38b Left and right side side connection means 39a, 39b Rear side side connection means 40 Openable / closable seat part locking means 41 Locking belt 43 Base material 44 Thin plate material 45 made of hard synthetic resin Base connection means 46 Base sheet portion locking means 47 Front side connection means 48a, 48b Hard thin plate material 49 Slit 50 Through-hole 51 Left and right direction flap part 52 Locking Piece 56 Picking tongue piece 57 Ring 58 Locking means

Claims (3)

  A foldable interior cover that is attached to the inside of a panel adjacent to the load storage space so as to surround the load storage space on the base of the cargo handling cart, and is a middle part of a plurality of seat portions constituting the interior cover An interior cover for a cargo truck, in which a rigid reinforcing strip member is attached to a sheet portion having a fold for folding at a certain location along a fold line of the fold.   The cargo trolley includes a back panel, a base that can be folded up in an upright position on the inside of the back panel, and a pair of left and right side panels that extend right and left from the left and right sides of the back panel. One of the side panels is connected to the back panel so that it can be switched to a folded position that overlaps the base of the standing position, and the interior cover includes a back seat portion along the inside of the back panel, both left and right sides Openable and closable connected from the lower side to the upper side and the front side of both the left and right side seats by means of a zipper that is connected from the upper side of the side seat part and the back seat part along the inside of the panel. An interior cover that includes a seat portion and is configured such that the openable / closable seat portion separated from the left and right side seat portions can be externally folded. In over the surface side of the openable seat, along the valley fold line at the time of folding the outer winding reinforcing strip member rigid is impregnated, cargo handling truck interior cover of claim 1.   The cargo trolley includes a back panel, a base that can be folded up in an upright position on the inside of the back panel, and a pair of left and right side panels that extend right and left from the left and right sides of the back panel. One of the side panels is connected to the back panel so that it can be switched to a folded position that overlaps the base of the standing position, and the interior cover includes a back seat portion along the inside of the back panel, both left and right sides Openable and closable connected from the lower side to the upper side and the front side of both the left and right side seats by means of a zipper that is connected from the upper side of the side seat part and the back seat part along the inside of the panel. It has a seat part. In the interior cover that is configured to be foldable inward and upward, the inner side surface of the foldable side seat portion is provided with a rigid reinforcing thin line along a valley fold line between the upper half portion and the lower half portion. The interior cover of a cargo handling cart according to claim 1 or 2, wherein a strip member is attached.

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