JP3354096B2 - Kannon doors for cargo handling using extruded aluminum bars - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double door for cargo handling which is incorporated in a van or wing type transport vehicle, a freezing vehicle, a marine container or the like, and has a structure in which a plurality of members made of extruded aluminum members are interconnected. .

[0002]

2. Description of the Related Art A van van, a wing truck, a marine container and the like of a truck are provided with a loading / unloading door used for loading / unloading of cargo. In a conventional double door, for example, provided at the rear of a van, as shown in FIG. 1, left and right doors 10 and 20 are pivotally attached to left and right frames 12 and 22 on the vehicle body side by hinge mechanisms 11 and 21. ing. Then, usually, the doors 10 and 20 extend vertically with respect to 2.
The locking rods 13, 14 and 23, 24 are provided. Each of the rods 13, 14 and 23, 24 is rotated by handles 15, 16, 25, 26, respectively, and locking projections 17, 18, 27, 27,
At 28, engagement portions provided at the tips of the rods 13, 14 and 23, 24 are stopped. When opened, the locking projections 17 and 1
8 and 27, 28 to each rod 13, 14, 23, 2
Then, the left and right doors 10 and 20 are opened. When closing, close the open doors 10 and 20,
By operating the handles 15, 16 and 25, 26 of the doors 10, 20 in the closed position, the rods 13, 14, 23, 2 are operated.
4 and the corresponding locking projections 17, 18 and 27, 28
To be engaged. Thereby, the doors 10 and 20 are restrained in the closed state.

[0003]

As the door, a thick veneer plate is used in which aluminum plates are adhered to both sides of a thick veneer plate. For this reason, the wooden portion of the door may absorb moisture due to intrusion of rainwater or the like, and the weight may increase. The permeated water causes corrosion of the wooden part and rust of the metal fittings used. The present inventors, as a solution to the drawbacks of wooden doors, assemble the door body by connecting extruded aluminum materials excellent in corrosion resistance, and make the door surface flat by incorporating a lock mechanism inside the door. Japanese Unexamined Patent Publication No. Hei 8-310246 introduces a double-sided door which improves the appearance and has excellent durability. However, since it is a method of connecting aluminum extruded profiles through wedges, parts for connection are required,
A special joint design for wedge fitting is required for the connection of extruded aluminum bars. Further, it is necessary to prevent the permeation of water by filling a gap which is likely to be generated in the connecting portion with a sealant. For this reason, it takes time and effort to manufacture, resulting in an increase in manufacturing cost. The present invention has been devised to solve such a problem, and by forming a joint portion for elastically fitting and connecting aluminum extruded profiles to the side of the aluminum extruded profile itself, It is an object of the present invention to provide a double door that easily and firmly directly connects extruded aluminum members and has a connection portion having excellent watertightness.

[0004]

In order to achieve the object, a double door for cargo handling according to the present invention comprises left and right door bodies in which side end faces of a plurality of panels made of extruded hollow aluminum are directly connected to each other. , Upper and lower rails closing the upper and lower openings of the panel, hinge fittings attached to the left and right sides of the door and connected to the side pillars on the container body side, and a lock attached to the panel constituting the center of the door And a rod.
A fitting receiving portion is provided at a side end of one panel to be connected,
A fitting portion is provided at the other panel side end. The fitting receiving portion has a locking projection extending laterally in the same plane from the panel surface portion, and a locking groove is formed on the back side of the base of the locking projection. An inner side wall defining a locking groove between the locking projection and the locking protrusion extends from the panel front surface to the panel rear surface. A coplanar flat portion extends laterally from the rear surface of the panel, and a contact portion rises from the rear surface toward the front surface at the tip of the flat portion. An outer side wall rising toward the panel surface is provided in the middle of the plane portion, and a hook is formed at a tip of the outer side wall.

[0005] The fitting portion has a flat portion extending sideways in the same plane from the panel surface portion, and a hook to be fitted into the locking groove of the fitting receiving portion is formed at the tip of the flat portion. Further, the connection side wall rises from the middle of the plane portion toward the panel back surface, and a receiving groove into which the hook at the tip of the outer side wall of the fitting receiving portion fits is formed at the base of the connection side wall. The distal end of the connection side wall is a contact flat portion that contacts the flat portion of the fitting receiving portion. When the hook of the fitting portion is fitted into the locking groove of the fitting receiving portion, and the hook of the fitting receiving portion is dropped into the receiving groove of the fitting portion, the outer side wall of the fitting receiving portion is connected to the connecting side wall of the fitting portion. An elastic restoring force is applied to the outer side wall of the fitting receiving portion, so that the two panels are mechanically engaged with each other with the elastic force and are firmly connected directly.

Preferably, the side surface of the inner side wall of the fitting receiving portion is formed in an arc shape having substantially the same curvature as the outer surface of the hook of the fitting portion. It is preferable that the outer side wall of the fitting receiving portion is formed in an arc shape having substantially the same curvature as the connecting side wall of the fitting portion. The flat portion of the fitting receiving portion may be partially thinned, and the contact flat portion of the fitting portion may be pressed against the thin portion. In this case, if necessary, a notch for screw positioning extending in the longitudinal direction of the panel may be formed in the thin portion, and the two panels may be supplementarily fixed by screws penetrating both connected panels. It is preferable that the hinge-side panel, the intermediate panel, and the lock-rod-side panel are partially thickened at locations where the hinge and the lock rod are mounted to secure mechanical strength.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described with reference to an example of a double door which is attached to an opening of a container body mounted on a truck. The double door according to the present invention includes a pair of door bodies 100 and 200 in which a plurality of panel members obtained by cutting an extruded aluminum profile into a predetermined length are directly connected to each other. As the extruded aluminum material, a 6000 series aluminum alloy subjected to a chemical conversion treatment such as an alumite treatment is used.
Each panel is made of an aluminum hollow extruded profile reinforced with ribs extending between the front side and the back side, and is a member excellent in corrosion resistance, strength, and lightweight. One door body 100
Is a total of four hinge side panels 11 as shown in FIG.
0, intermediate panels 120, 120 and a lock rod side panel 130. When the number of the intermediate panels 120 is selected according to the opening of the container body, the door body 100 has a required width. Since the other door body 200 also has substantially the same structure, the door body 100 will be represented in the following description.

As shown in FIG. 3 (a), the hinge side panel 110 has a flange 1 at a position facing the side column on the container body side.
11, and a fitting receiving portion 112 is formed on a side opposite to the flange 111. Further, the surface portion 113 is partially thickened to form a hinge attachment portion 114.
The flange 111 includes a cover portion 111a extending sideways with a step from the front surface portion 113, and a projection 111c forming a gasket mounting groove 111b on the back surface side of the cover portion 111a.
Is formed. The fitting receiving portion 112 has a locking protrusion 112a extending in the same plane as the panel surface portion 113 and extending laterally. The locking projection 112a has a substantially semi-circular cross-sectional shape, and a locking groove 112c is defined by an inner side surface of the base and an arc-shaped inner side wall 112b of the panel side surface. The arc-shaped inner side wall 112b is connected to the panel rear surface 115 via a vertical side wall 112d.

On the back side of panel 110, a back surface 115
And a flat portion 112e coplanar with the vertical side wall 112d. The stopper portion 112f protrudes from the middle of the flat portion 112e to the panel surface side, and the flat portion 112e lateral to the stopper portion 112f is thinned.
g. A cut 112h (FIG. 4b) extending in the longitudinal direction of the panel 110 is formed substantially at the center of the thin portion 112g. The notch 112h is formed after connecting the panel 110 to the intermediate panel 120.
119 used as needed to fix the
(FIG. 4c). 112g thin part
Further, a front end flat portion 112i coplanar with the panel rear surface portion 115 is formed on the side. An arc-shaped outer side wall 112j stands up from the middle of the front end flat portion 112i toward the panel surface side, and a hook 112k is formed at the end of the outer side wall 112j. Tip flat part 11
The end of 2i is a contact portion 112l that rises at right angles to the panel plane.

The intermediate panel 120 connected to the hinge side panel 110 has a fitting portion 121 formed on a side surface facing the fitting receiving portion 112 and a fitting receiving portion 112 on the opposite side surface.
A fitting receiving portion 122 having the same shape as that of FIG. The surface portion 123 of the intermediate panel 120 is partially thickened to form a lock rod mounting portion 124. The fitting portion 121
It has a flat portion 121a that is coplanar with the panel surface portion 123 and extends laterally.
Hooks 121b that fit into the twelve locking grooves 112c are formed. The outer side surface 121c of the hook 121b is curved with the same curvature as the arc-shaped inner side wall 112b of the fitting receiving portion 112. An arc-shaped side wall 121d, which is curved at substantially the same curvature as the arc-shaped outer side wall 112j of the fitting receiving portion 112, rises from the middle of the plane portion 121a to the panel rear surface side. The distal end of the arc-shaped side wall 121d is
5 is a contact flat surface portion 121e parallel to 5. The contact flat portion 121e has a width slightly shorter than the thin portion 112g of the fitting receiving portion 112. Also, the arc-shaped side wall 121d
Is raised from the panel surface portion 123, the base of the side wall has a crank shape.
A receiving groove 121f into which 12k fits is formed.

The lock rod side panel 130 has a fitting portion 131 having the same shape as the fitting portion 121 of the intermediate panel 120 formed on the side connected to the intermediate panel 120, and a gasket mounting groove 132b formed on the opposite side. Protrusions 1 that form
An end projection 132 with 32c is provided. Further, a part of the panel surface portion 133 is a thick lock rod mounting portion 134. The panels 110, 120, and 130 having the above-described shapes are integrally formed by an extrusion molding method only by using different extrusion dies.

The fitting receiving portions 112, 122 and the fitting portion 12
Panels 110, 120, 130 on which 1, 131 are formed
Are directly connected by mechanical engagement without using wedges or the like. For example, when connecting the hinge side panel 110 and the intermediate panel 120, the tip of the hook 121b of the intermediate panel is fitted into the locking groove 112c of the hinge side panel 110 as shown in FIG. The intermediate panel 120 is relatively rotated so that the angle between the intermediate panel 120 and the intermediate panel 120 is widened. Intermediate panel 1
With the turning of 20, the inner peripheral surface of the hook 121b slides along the semicircular side surface of the locking projection 112a, so that the hook 121b slides smoothly into the locking groove 112c. Further, the arc-shaped side wall 121d presses the arc-shaped outer side wall 112j of the hinge side panel 110, and the arc-shaped outer side wall 112j.
Slightly open elastically. When the intermediate panel 120 is further turned, the hook 112k sliding on the surface of the arc-shaped side wall 121d is dropped into the receiving groove 121f.
As shown in (c), the arc-shaped side wall 112j returns to the original shape by the elastic restoring force. At this time, the contact portion 112k of the hinge side panel 110 contacts the side surface of the main body of the intermediate panel 120.

When the hook 112k is dropped into the receiving groove 121f, the leftward elastic force shown in FIG.
12k, the engagement between the fitting receiving portion 112 and the fitting portion 121 is not released, and the panel 1
10 and 120 are firmly connected. In addition, hook 12
1b and the arc-shaped side wall 112b, the thin portion 112g and the contact flat portion 121e, and the arc-shaped outer side wall 112j and the arc-shaped side wall 1
Since 21d are pressed against each other and are in surface contact, sufficient watertightness is secured without using a sealant or the like.
However, when the detachment due to vibration during vehicle running or the like is taken into consideration, the panels 110 and 120 may be fixed with screws 119 as necessary.

The interconnected panels 110, 120
Since the contact portion 112l of the hinge side panel 110 is pressed against the side surface of the intermediate panel 120, the connection structure has a structure that sufficiently withstands a force from the inside of the container (a downward force in FIG. 4C). Even if a large force is applied from the inside of the container, the movement of the contact flat portion 121l is restricted by the stopper portion 112f, so that the outward bending of the door body 100 is also suppressed. Furthermore, since the mating portion between the hook 121b and the locking projection 112a engaged with the locking groove 112c only faces the panel surface side, water does not flow into the gap between the connecting portions. Further, since there is no protruding portion on the outside, the door surface has high discrimination and is suitable for displaying a shop name, an advertisement, and the like. Intermediate panels 120, 120 and Intermediate panel 1
20 and the lock rod side panel 130 are also connected via the same fitting receiving part 122 and fitting parts 121 and 131. The other door body 200 is also assembled by connecting a plurality of panels with a similar connection structure. However, as shown in FIG. 4A, the door body 200 has an end protruding portion of the lock rod side panel 130. A lock rod side panel 230 having a flange 232 covering the surface 132 from the front side is used.

The fitting portions 121 and 131 and the fitting receiving portions 112 and 12 in FIG.
2 can be provided to connect the panels 110, 120, and 130 to each other. In this case, for example, the intermediate panel 1
A plane part 121a forming the same plane as the panel surface part 123 of 20 (b) extends laterally from the one end wall 121g,
Engagement projection 12 that widens toward flat portion 121a
1h is projected from the one end wall 121g. Locking projection 12
1h is a hook receiver 12 from the middle of the contact flat portion 121i.
1j is standing up. At the end of the hinge-side panel 110 (a) that engages with the fitting portion 121, a hook 112m is attached to the tip of a tip flat portion 112i extending in parallel with the panel back surface 115 instead of the arc-shaped outer side wall 112j in FIG. Is provided. Similar fitting receiving portions 122 and fitting portions 131 are provided at the other end of the intermediate panel 120 and one end of the lock rod side panel 130 (c), respectively.

The fitting receiving portion 112 and the fitting portion 121 shown in FIG.
When the hinge-side panel 110 and the intermediate panel 120 are connected via the hook, as shown in FIG.
The hook 121b is fitted to the
The intermediate panel 120 is turned counterclockwise so as to be on the same plane as. With the rotation of the intermediate panel 120, the contact flat portion 121i abuts on the thin portion 112g and bends, and further, as shown in FIG.
Engage with 2m. In this connection structure, the contact flat portion 1
21i interferes with the thin portion 112g and curves inward, and the opening of the hook receiver 121j is widened.
The engagement between the hook 21m and the hook 112m and the connection between the hinge panel 110 and the intermediate panel 120 are facilitated. Further, the connecting portion between the hinge-side panel 110 and the intermediate panel 120, which are connected in a state where the fitting portion 121 is fitted to the fitting receiving portion 112, generates an inward force (upward force in FIG. 6C). It becomes a connection part with high resistance. Furthermore,
Since a connection structure having a higher degree of hollowness can be obtained as compared with the connection structure of FIG. 4 (c), the heat insulation between the inside and outside of the door is also improved.

The door body 100 of a predetermined size assembled by connecting the panels 110, 120, and 130 uses an extruded aluminum material for the panels 110, 120, and 130, and therefore, the door body 100 is made of an extruded aluminum material. Internal cavities open up and down. Therefore, as shown in FIG.
An upper rail 101 and a lower rail 102 are attached to the upper and lower sides of the upper side, respectively, and the upper and lower openings are closed. As the upper rail 101 and the lower rail 102, as shown in cross section in FIG. 7, an extruded aluminum material having a cover pressed against the upper frame 161 and the lower frame 162 forming the opening of the vehicle-mounted container is used. You. The gasket 103 is inserted into the gasket mounting groove 111b (FIG. 3A) on the side of the door body 100, and the gasket 103 is connected to the upper rail 101 and the lower rail 102 via the gasket corners 104 and 105.

A lock rod 140 is attached to the door body 100 on which the upper rail 101 and the lower rail 102 are mounted. The lock rod 140 shown in FIG.
1, the engaging portion at the tip of the rod is stopped by the locking projections 142 and 143 fixed to the upper frame 161 or the lower frame 162 of the container mounted on the vehicle.
Since a conventional lock rod can be used, a detailed description of its structure is omitted here. The lock rod 140 can be provided to the door main body 100 either externally or in a built-in manner. In the case of external attachment, as shown in FIG. 2, a panel 130 whose rear surface is cut off, which corresponds to the attachment position of the lock rod 140, is used, and the mounting brackets 144, 145 of the lock rod 140 are attached to the panel 1.
After being fixed to 30, the opening 137 on the back surface is closed with the back plate 138. When the lock rod 140 is to be built in the panel 130, the lock rod 140 is applied to the panel 130 from the opening 137 side, and is fixed by the mounting brackets 144 and 145. In this case, a part of the surface portion 133 of the panel 130 is cut off so that the operation portion of the handle 141 faces the outside.

The door body 100 is swingably attached to the vehicle-mounted container side column 163 (FIG. 4a) via an appropriate hinge mechanism, but only the hinge 150 is shown in FIG. A hinge-side panel 110 whose rear surface is cut off to attach the hinge 150 is used. The hinge 150 having a pivot point on the vehicle body side is fixed to the panel 110, and the opening 115 is closed with the back plate 116. Thus, panel 1
Since the door body 100 can be assembled by directly connecting 10, 120 and 130, the number of parts is smaller than that of the connecting method introduced in Japanese Patent Application Laid-Open No. 8-310246.
The assembly operation itself is also facilitated. In addition, since the panels 110, 120, and 130 are connected via the connection portion having excellent watertightness, the filling of the sealant or the like can be omitted, and a vehicle-mounted container in which stored luggage is securely protected can be obtained. . Moreover, since the door body is made of extruded aluminum with excellent corrosion resistance, strength and light weight, it is suitable not only for vehicles that require low fuel consumption, but also for long term excellent appearance. Will be maintained.

[0020]

As described above, since the double door according to the present invention is composed of left and right doors which are directly connected to each other by panels made of extruded aluminum members, the conventional wooden body has an aluminum plate. Compared to a laminated door, the door is lighter and more durable, which is more suitable for vehicles and the like that require a reduction in fuel consumption. Also, the individual door members are firmly connected by a simple operation of only meshing them with each other without the need for a connection fitting such as a wedge. The connected door body is excellent in watertightness because the joint between the locking projection and the hook only faces the front side, and since there is no projection on the front side, the door surface with high discrimination is used for displaying shop names, advertisements, etc. Can be displayed.

[Brief description of the drawings]

FIG. 1 shows a conventional double door provided at the rear of a vehicle.

FIG. 2 shows a double door according to the embodiment of the present invention provided at the rear of the vehicle.

FIG. 3 is a sectional view of a hinge side panel (a), an intermediate panel (b), and a lock rod side panel (c) constituting a door body.

FIG. 4 is a cross-sectional view of the door body assembled by connecting the panels (a) and explanatory views of the connecting method (b, c).

FIG. 5 is a sectional view of a hinge side panel (a), an intermediate panel (b), and a lock rod side panel (c) having different connecting portion shapes.

FIG. 6 is a sectional view (a) of a door body assembled by connecting panels through the connecting portion, and an explanatory view of a connecting method (b,
c)

FIG. 7 is a longitudinal sectional view of a door body showing a positional relationship with respect to an opening of a vehicle-mounted container.

[Explanation of symbols]

110: hinge side panel 120: middle panel 1
30: Lock rod side panel 111: Flange 121, 131: Fitting part 11
2, 122: Fitting receiving part 132: End projecting part 113, 123, 133: Panel surface part 114: Hinge attaching part 124, 13
4: Lock rod mounting portion 115, 125: Panel back surface 117, 137: Opening 118, 13
8: Back plate 140: Lock rod 141: Handle 14
2, 143: locking projection 144, 145: mounting bracket 150: hinge 161: upper frame of vehicle mounted container 162: lower frame of vehicle mounted container 163: side pillar of vehicle mounted container 111a: covering portion 111b, 132b: gasket mounting Grooves 111c, 132c: protrusion 112a: locking protrusion 112b: arc-shaped inner side wall
112c: locking groove 112d: vertical side wall 112e: plane portion 112
f: stopper portion 112g: thin portion 112h: cut 112i: flat end portion 112j: arc-shaped outer side wall 112k: hook 112l: contact portion
112m: hook 121a: flat portion 121b: hook 121c:
Hook outer surface 121d: arc-shaped connecting side wall 121e: abutting flat portion 121f: receiving groove 121g: one side end wall 121h: locking projection 121
i: Flat contact part 121j: Hook receiver

────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Kenji Fukashima 3034 Uenohara Uenohara, Atsugi-shi, Kanagawa Japan Full-Half Co., Ltd. (56) References JP-A-8-310246 (JP, A) Japanese Patent Publication No. 37-6033 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) E06B 3/70-3/82 B60J 5/10 B65D 88/12 E05C 1/06

Claims (8)

(57) [Claims] 1. Left and right door bodies directly connecting side end surfaces of a plurality of panels made of a hollow aluminum extruded shape member, an upper rail and a lower rail closing an upper opening and a lower opening of the panel, and a left and right side of the door. And a lock rod attached to a panel constituting the center of the door, and a hinge end fitting attached to the side column on the container body side, and a side surface of one of the connected panels has a panel surface portion. A locking groove is formed on the back side of the base of the locking projection extending sideways in the same plane, and the inner side wall extends from the panel front side to the panel back side, and extends from the panel back side to the same plane sideways. The outer side wall rises toward the panel surface part in the middle of the flat part, a hook is formed at the tip of the outer side wall, and the contact part that stands upright from the back surface toward the surface part is at the end of the flat part. The mating receiving part is formed and connected On the side end surface of the panel, a hook is formed at the tip of a flat portion extending laterally in the same plane from the surface of the panel and fitted into the locking groove of the fitting receiving portion. A receiving groove is formed at the base of the connecting side wall, and a receiving groove into which the hook at the end of the outer side wall of the fitting receiving portion is fitted is formed at the base of the connecting side wall. A fitting portion that is a contact flat portion that contacts the flat portion of the receiving portion is formed, and a hook of the fitting portion is fitted into a locking groove of the fitting receiving portion, and is inserted into a receiving groove of the fitting portion. When the hook of the fitting receiving portion is dropped, an elastic restoring force for pressing the outer side wall of the fitting receiving portion against the connecting side wall of the fitting portion acts on the outer side wall of the fitting receiving portion. Kannon door for cargo handling using shaped material. 2. Left and right door bodies which directly connect the side end faces of a plurality of panels made of hollow aluminum extruded profiles to each other, upper rails and lower rails closing upper and lower openings of the panels, and door left and right sides. And a lock rod attached to a panel constituting the center of the door, and a hinge end fitting attached to the side column on the container body side, and a side surface of one of the connected panels has a panel surface portion. A locking groove is formed on the back side of the base of the locking projection extending laterally in the same plane, and the inner side wall extends from the panel front side to the panel back side, extends laterally in parallel with the panel back side, and has a tip. A mating receiving portion having a flat portion provided with a hook is formed on the side end surface of the other panel to be connected. A hook that fits into the locking groove of the mating part is formed. A locking projection provided with a hook receiver in which a hook of the flat part of the fitting receiving part is fitted in a contact flat part pressed against the flat part of the fitting receiving part from the inside protrudes laterally from the side end face. A hook of the fitting portion is fitted into the locking groove of the fitting receiving portion, and a hook of the flat portion of the fitting receiving portion is fitted to a hook receiving portion of the contact flat portion of the fitting portion. When engaged with the fitting receiving part, the elastic restoring force pressing the contact flat part of the fitting part against the flat part of the fitting receiving part acts on the contact flat part of the fitting part. Kannon door. 3. The double door according to claim 1, wherein the side surface of the inner side wall of the fitting receiving portion is formed in an arc shape having substantially the same curvature as the outer surface of the hook of the fitting portion. 4. An outer side wall of the fitting receiving portion is formed in an arc shape having substantially the same curvature as a connecting side wall of the fitting portion.
Kannon door for cargo handling as described. 5. The loading door according to claim 2, wherein the contact flat surface portion is free and flared from the flat surface portion and provided on a side end surface of the other panel. 6. The double door according to claim 1, wherein a thin portion is provided in a part of the flat portion of the fitting receiving portion, and the contact flat portion of the fitting portion is pressed against the thin portion. 7. The loading door according to claim 6, wherein a notch for positioning a screw extending in a longitudinal direction of the panel is provided in the thin portion. 8. The cargo handling quay according to claim 1, wherein the hinge side panel and / or the intermediate panel and the lock rod side panel are partially thick at a position where the hinge and / or the lock rod is mounted. door.