JPS6144521Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a shutter door structure for opening and closing the opening of a vehicle, container, etc., and more specifically, to a shutter door structure that employs lightweight shutter doors made by using extruded material such as aluminum, in which the hoisting rope for the shutter door is built into the shadows of corner posts arranged on both sides of the opening of the vehicle, container, etc.

2. Description of the Related Art Conventionally, some vehicles, containers, etc. have adopted shutter doors, which are made up of a number of horizontal rectangular panels rotatably connected at their upper and lower edges, as doors for opening and closing the openings of the vehicles and containers. and,
In vehicles, containers, etc. that employ such a shutter door, the shutter door is equipped with a plurality of guide rollers protruding from both sides of the shutter door, which are arranged along the opening and ceiling surface of the vehicle, container, etc. By engaging with a pair of guide rails and guiding the shutter door along the guide rails, the opening is opened and closed, while a winding device installed above the inside of the opening is used to wind the shutter door. Generally, a shutter door structure is employed in which a hanging rope that can be taken off is attached to the shutter door, and the shutter door is lifted by the hanging rope.

By the way, in the shutter door 4 (Figs. 1 to 3) used in vehicles, containers, etc. 2, conventionally,
The panels 6 and 10 are made of woodblocks, laminates, or materials with thin metal plates on both sides, and the panels 6 and 10 themselves are heavy, and the panels 6 and 10 are difficult to connect. Since many thick metal hinges were used in the construction, the shutter door 4 was heavy, and the winding device for winding up the suspension rope 14 was required to have corresponding strength and winding force.

As a result, the winding device inevitably becomes heavy and large, the apparent size of the upper frame (header) 8 becomes large, and the effective opening height of the opening inevitably becomes low. In addition, as a result, the guide rail 19 also needs to be placed at a distance from the ceiling surface, which causes problems such as a corresponding reduction in cargo storage capacity, and furthermore, the weight of the shutter door 4 and winding device is heavy. There was also a problem that the loading weight of the cargo was limited.

In addition, in the conventional shutter door structure,
A mounting bracket (locking bracket) 12 is exposed and fixed on the outer surface of the lowermost panel 10 of the shutter door 4,
The hanging rope 14 was attached to the mounting bracket 12, and when the shutter door 4 was opened and closed, the hanging rope 14 was wound up and rewound by a winding device, so (a) the exposed hanging rope 14 (b) Suspension rope 1
4 is exposed to the wind and rain, so even if a vinyl coating is applied, the coating becomes brittle and easily torn, leading to rapid rusting and shortening the lifespan; (c) Vibration when the vehicle is running causes the suspension rope 14 to damage the panel. Since the surface of panel 6 is hit strongly, noise is generated and the surface of panel 6 is severely damaged;
(d) Since the hanging rope 14 contacts and presses down the head seal 16 of the opening upper frame 8, airtightness is impaired, and the head seal 16 is severely damaged and its lifespan is short. was.

In response to this, in recent years, in response to the demand for lighter vehicles, extruded materials such as aluminum have been adopted for the panels 6 and 10, and connecting portions have been provided on the upper and lower edges of the panels 6 and 10 to make the panels 6 and 10 more flexible. Shutter doors that are formed by rotatably connecting these connecting portions have come to be used in some cases.

If extruded materials such as aluminum are used as the panels 6 and 10 and the shutter door 4 is formed by directly connecting them, the shutter door 4
It is possible to significantly reduce the weight of the hanging rope 14.
The winding device for winding up can also be made smaller and lighter. Therefore, the apparent size of the upper frame 8 can be reduced, and the effective opening height of the opening can be increased accordingly. Furthermore, the guide rail 19 can also be disposed closer to the ceiling surface, and the cargo storage capacity of vehicles, containers, etc. can be correspondingly increased. Furthermore, since the weight of the shutter door 4 and the winding device are reduced, there is an advantage that the loading weight can be increased.

However, in a shutter door structure that employs such a shutter door 4, although it is possible to successfully reduce the weight of the shutter door 4 and reduce the size and weight of the accompanying winding device, as described above, As shown in Figure 2, in order to maximize the cargo storage capacity of vehicles, containers, etc., the bottom panel 1
Since it is normal that only a small gap is formed between the outer surface of the panel 10 and the corner post 18, a locking metal fitting that protrudes a large amount from the outer surface of the panel 10, such as the mounting metal fitting 12 described above, is used to secure the corner post 18. It was extremely difficult to install it in the shade due to space considerations, and therefore the exposed hanging system, which has the various drawbacks mentioned above, was still used.

The present invention was developed against this background, and its gist is a shutter door structure for opening and closing openings of vehicles, containers, etc. as described above. In the case where a lightweight extruded material such as aluminum is used as the panel, a locking metal fitting for attaching the suspension cable to the shutter door is fixed to the lowermost panel of the shutter door so as to protrude from both sides of the shutter door, The suspension rope is made to pass through a space between a plurality of guide rollers projected on both sides of the shutter door and corner posts erected on both sides of an opening of a vehicle, container, etc., The suspension rope is configured to pass through both sides of a head seal that is brought into sliding contact with the shutter door at the upper end of the opening.

According to the shutter door structure according to the present invention, since an extruded material such as aluminum is used for the shutter door panel, it is possible to reduce the weight of the shutter door and to obtain various effects associated therewith. This has the advantage of improving the appearance of the vehicle since it is hidden inside the corner post of the vehicle, and also improves the durability of the suspension line since it is no longer exposed to the elements. There is also. Furthermore, since the hanging rope will not hit the panel surface,
There is also the advantage that the generation of noise when the vehicle is running is well suppressed, and there is also the advantage that damage to the panel surface caused by the hanging cables is well avoided. In addition, since the hanging rope does not come into contact with the head seal, there is an advantage that problems such as loss of airtightness of the head seal due to such contact with the hanging rope can be eliminated. Another advantage is that the head seal is better prevented from being damaged by the sling.

Moreover, according to the present invention, the locking metal fittings for attaching the suspension rope to the shutter door are fixed to the lowermost panel of the shutter door in a state that protrudes from both sides, and the space between the corner post and the guide roller is fixed to the lowermost panel of the shutter door. Since the space is used effectively, there is no need for that much space between the panel and the corner post, so there is no reduction in the cargo storage capacity of vehicles, containers, etc.
It has the advantage of being able to obtain the various effects mentioned above.

Also, there should be enough space between the end of the panel and the inner wall of the vehicle, container, etc. facing it (generally the inner wall of a corner post bent into an L shape) to install the guide roller. Therefore, the space between the end face of the panel and the inner wall of the vehicle, container, etc. facing it, and the amount of protrusion of the corner post toward the inside of the opening, can be made larger than necessary. There is no need to make it large. Therefore, there is an advantage that there is no need to particularly narrow the effective opening width of the opening in order to attach such a locking metal fitting.

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

FIG. 4 shows the rear of a container section of a van-type vehicle, and each horizontally long rectangular panel 22 constituting the shutter door 20 is made of an extruded material such as aluminum or an alloy thereof.

As shown in FIGS. 5 and 6, each panel 22 has a partially cut-out cylindrical portion 24 with a small diameter formed at its upper edge, and a partially cut-out cylindrical portion 24 located at its lower edge. A large-diameter partially cut-out cylindrical portion 26 is formed, and the former is rotatably fitted to the latter to form the shutter door 20 integrally. As shown in FIG. 7, shafts 2 are attached to both ends of the small diameter cylindrical portion 24.
8 is fitted, and a guide roller 30 is rotatably attached to the tip of the shaft 28.

As shown in FIGS. 8 to 10, the lowermost panel 22 has a shaft 28 similar to that described above located at the lower end corresponding to the region where the cylindrical portion 26 is formed. and guide roller 30
is installed. Further, the amount of protrusion of each of the guide rollers 30 from the end surface of the panel 22 is set to be approximately the same as that of the conventional shutter door structure, as is clear from a comparison with FIG.

Further, as shown in FIG. 5, a pair of guide rails 34 extending vertically along the corner posts 32 on both sides of the rear opening are connected to the ceiling portion 3, respectively.
It is curved near 5 and made horizontal, and is extended to a predetermined length and fixed to the ceiling part 35. and,
The guide rollers 30 are engaged with the guide rail 34, and the shutter door 20 is moved in the vertical direction by being guided by the guide rail 34 and rolling. ing. This allows the opening of the container portion to be opened and closed.

Further, as shown in FIG. 7, side seals 36 are provided at the opposite edges of the corner posts 32 on both sides of the opening, and a header 37 at the upper edge of the opening is provided with a side seal 36. As shown in FIG. 5, a head seal 38 is provided. The side seals 36 and the head seals 38 are brought into sliding contact with the shutter door 20, so that the spaces between the corner post 32 and the shutter door 20 and between the header 37 and the shutter door 20 are airtightly sealed. It's becoming like that. Furthermore, as shown in FIG. 8, a bottom seal 40 is disposed at the lower edge of the shutter door 20, and the bottom seal 40 is disposed between the lower edge 41 of the opening (FIG. 5). It is designed to be airtightly sealed.

As is clear from FIG. 7, the gap between the corner post 32 and the outer surface of the panel 22 of the shutter door 20 and the amount of protrusion of the corner post 32 toward the opening are both approximately the same as in the conventional shutter door structure. are set to the same size. In other words, both the cargo storage capacity of the container section and the effective opening width of the opening are set to be approximately the same as those employing the conventional shutter door structure.

Further, as shown in FIGS. 9 and 10, the lowermost panel 22 of the shutter door 20
On the outer surface, two sets of bolts 44 are provided with rectangular plate-shaped brackets 42 located at the lower ends on both sides, respectively.
It is fixed by a nut 45. A rod 46 is welded and fixed to the lower end of the bracket 42 so as to protrude a predetermined length from the end surface of the panel 22, and a piece 48 is made to protrude downward from the protruding end of the rod 46. It is fixed in a fixed position. Here, the bracket 42, the rod 46 and the piece 48 form a locking fitting 49.

Note that, as is clear from FIG. 7, the amount of protrusion of the locking metal fitting 49 from the outer surface of the panel 22 is significantly smaller than that of the conventional mounting metal fitting 12, and the locking metal fitting 49 is designed to prevent interference with the corner post 32. It's summery. In addition, as shown in FIG. 9, the locking fittings 49 can be
A guide roller 30 is arranged at the lower end of the lowermost panel 22 and protrudes by a length necessary and sufficient to lock a hanging fitting 52, which will be described later.
and a guide rail 3 that guides the guide rail 30.
4, and are arranged to face each other with a predetermined gap between them.

On the other hand, the suspension rope 5 for hoisting the shutter door 20
A loop-shaped hanging fitting 52 having sufficient strength to lift the shutter door 20 is provided at the end of the shutter door 20.
is fixed, and this hanging metal fitting 52 is attached to piece 4.
8 and is engaged with the rod 46. As is clear from FIGS. 4 and 7, the suspension rope 50 passes through the space between the corner post 32 and each guide roller 30 (more precisely, the shaft 28), and also through both sides of the head seal 38. It is disposed along the edge of the shutter door 20 in a state where It's becoming like that.

The winding device 54 is provided with a shaft 58 that rotates the drum 56 and a coil spring 60 that applies a predetermined torque to the shaft 58. A biasing force approximately equal to the weight of the shutter door 20 is applied to the shutter door 20. Thereby, the shutter door 20 can be opened and closed very easily and easily with a single touch.

Therefore, according to such a shutter door structure, since the panel 22 of the shutter door 20 is made of a lightweight extruded material such as aluminum with an interlock connection structure, the winding device 54 can be made smaller and lighter. As a result, various effects associated with the weight reduction of the shutter door 20 can be obtained, such as an expansion of the effective opening height of the opening and an increase in the cargo storage capacity. Since it is built-in, it has the advantage of improving the appearance of the rear of the container part, and (b) since the hanging rope 50 is not exposed to wind and rain, its lifespan is long, and furthermore, (c) Since the hanging ropes 50 do not hit the surface of the panel 22 due to vibrations when the vehicle is running, the generation of noise while the vehicle is running is well suppressed, and the surface of the panel 22 is not damaged by the hanging ropes 50. The advantage is that this can be avoided. In addition, (d) the suspension rope 50 passes on both sides of the head seal 38 and does not come into contact with the head seal 38;
Another advantage is that the airtightness of the head seal 38 is not impaired by the contact with the head, and the head seal 38 itself is not damaged.

Moreover, (e) the locking metal fitting 49 for attaching the suspension rope 50 to the shutter door 20 is attached to the panel 2.
The panel 22 of the locking fitting 49 is provided so as to protrude from the end face of the locking fitting 49 by a necessary and sufficient length, and the hanging fitting 52 of the hanging rope 50 is engaged with the protrusion of the locking fitting 49. Since the amount of protrusion from the outer surface is significantly smaller than that of the conventional mounting bracket 12, the gap between the outer surface of the panel 22 and the corner post 32 is approximately the same size as that of the conventional mounting bracket, as described above. Therefore, the above
It has the advantage that various effects such as (a) to (d) can be obtained without reducing the cargo storage capacity of the container section.

(f) As mentioned above, the amount of protrusion of the guide roller 30 from the end surface of the panel 22, and the amount of protrusion of the guide roller 30 from the end surface of the panel 22
The gap between the end surface of 2 and the inner wall of the corner post 32 facing the corner post 32 is approximately the same size as when adopting a conventional shutter door structure, and the amount of protrusion of the corner post 32 toward the inside of the opening is also reduced. Since the dimensions are almost the same as those using a conventional shutter door structure, there is also the advantage that the effective opening width of the opening can be maintained as large as the conventional shutter door structure.

In addition, FIG. 11 shows the locking fitting 4 of the above embodiment.
A locking fitting 62 which can be substituted for 9 is shown. This locking metal fitting 62 has an L-shaped rod 64 whose tip is further bent into a hook shape, and is welded and fixed to the bracket 42 in the same way as the rod 46 of the locking metal fitting 49. Example locking fitting 49
It has the unique effect of being easier to manufacture than the above, and also making it easier to attach and detach the hanging fitting 52. In addition,
It is also possible to employ a locking metal fitting having a structure other than those described above.

In addition, it goes without saying that various changes and improvements can be made to the present invention based on the knowledge of those skilled in the art without departing from the spirit thereof.

[Brief explanation of the drawing]

FIG. 1 is a rear perspective view of a conventional van-type vehicle, and FIG. 2 is a partial cross-sectional view of FIG.
FIG. 3 is a perspective view of a main part of the lower end of the shutter door shown in FIG. 1. FIG. 4 is a cross-sectional front view of the main part at the rear of the container section of a van-type vehicle equipped with the shutter door structure according to the present invention, FIG. 7 is a sectional view showing the connection structure between panels, and FIG. 7 is a diagram corresponding to FIG. 2 of the van type vehicle in FIG.
9 is a front view of the lower end of the shutter door shown in FIG. 8, and FIG. 10 is a right side view of FIG. 9. FIG. 11 is a perspective view showing another embodiment of the locking fitting. 20...Shutter door, 22...Panel, 3
0... Guide roller, 32... Corner post, 3
4...Guide rail, 35...Ceiling section, 38...
Head seal, 49, 62... Locking metal fitting, 50...
... Suspension rope, 52 ... Hanging fitting, 54 ... Winding device.

Claims (1)

[Scope of Claim for Utility Model Registration] A shutter door structure for opening and closing openings of vehicles, containers, etc., in which panels made of extruded materials such as aluminum are rotatably connected by connecting portions provided at their upper and lower edges. In a plurality of guide rollers provided in a state that projects from both sides of a shutter door integrally formed by a shutter door, a pair of guide rails are arranged along an opening and a ceiling surface of the vehicle, container, etc. engage with the
By guiding the shutter door along the guide rail, the opening is opened and closed, and a suspension rope that can be wound up by a winding device provided inside and above the opening is provided. In the shutter door structure in which the shutter door is attached to the shutter door and the shutter door is suspended by the suspension rope, a locking metal fitting for attaching the suspension rope to the shutter door is attached to the shutter door so as to protrude from both sides of the shutter door. a plurality of guide rollers fixed to the lowermost panel and having the hanging rope protruding from both sides of the shutter door;
The suspension cable passes through the space between the corner posts erected on both sides of the opening, and passes on both sides of a head seal that is brought into sliding contact with the shutter door at the upper end of the opening. A shutter door structure for vehicles, containers, etc., characterized by the following features: