JP3841409B2 - Truck body rear door frame - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rear door frame of a truck body, and more particularly to a rear door frame constituting a mounting portion of a rear opening / closing door of a box-shaped truck body such as a refrigerated vehicle or a cold car.
[0002]
[Prior art]
Conventionally, this type of door frame is constructed by welding an upper frame member and a side frame member made of a steel or stainless steel plate material by pressing or the like into a gate shape, and then the side frame member and the lower frame. It was assembled by connecting materials. In addition, in order to maintain airtightness with the double doors, the door-to-door packing made of synthetic resin provided along the upper frame material and the side frame material is composed of the upper frame material, the side frame material, and the track. It was attached to the ceiling panel and side wall panel of the body with fixing members such as rivets and screws.
[0003]
[Problems to be solved by the invention]
However, since this type of conventional door frame is assembled into a gate shape by connecting the upper frame material and the side frame material by welding, it requires skill in welding and requires a large work space for assembly. There were also problems with location and transportation. Further, since the door-end packing is attached to the upper frame member, the side frame member, the ceiling panel and the side wall panel of the track body with fixing members such as rivets and screws, there is a problem that the attachment is troublesome.
[0004]
Furthermore, when repairing, for example, when it is damaged due to an accident or the like, there is a problem that it takes time and cost to replace the welding and packing of the door.
[0005]
The present invention has been made in view of the above circumstances, and can be simplified without taking up a large space for connection work and repair work of the upper frame material and the side frame material, and mounting and replacement of the door-to-door packing. An object of the present invention is to provide a rear door frame of a truck body that is easy to work with.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the rear door frame of the present invention has an upper frame material, a pair of left and right side frame materials, and a lower frame material that constitute a mounting portion of a rear opening / closing door for a box truck body for cold insulation. And a rear door frame of the truck body comprising the door door packing provided along the upper frame material and the side frame material,
The upper frame member and the side frame member are connected via a corner joint, and the side frame member and the lower frame member are connected via a connecting member protruding from the lower frame member,
A fitting groove for the door-end packing is provided on the door-side opening surface of the upper frame member and the side frame member, one side portion of the door-end packing is fitted into the fitting groove, and the other side portion is The track body abuts on the ceiling panel or the side wall panel and is fixed by a fixing member.
[0007]
In this invention, the fitting groove includes an opening that opens toward the inner side of the track body, and a bent portion that continues to the opening and bends in an arc shape toward the outer side of the track body. The door-end packing includes an arc-shaped insertion piece that is inserted while rotating along the bent portion of the fitting groove, a door-end piece bent from the insertion piece, and a ceiling panel or side wall of the track body. It is preferable to have a structure including a fixing piece that comes into contact with the panel.
[0008]
Further, at least the upper frame material and the side frame material are formed of an aluminum hollow extruded shape, and the casting has a connecting arm portion that can be slidably fitted into the hollow portion of the upper frame material and the side frame material. It is preferable to connect the upper frame member and the side frame member via the corner joint made of the corner joint, and fix the connecting arm portion of the corner joint, the upper frame member, and the side frame member with the fixing members, respectively. 3). In this case, the upper frame material is formed of a hollow extruded shape having a cross-section having a fitting groove on the short side and opened in the center of the long side on the ceiling panel side, and the side frame material is formed on the short side. The outer side of the long side of the side wall panel is open, and the hollow side of the cross section has an extending piece with the short side of the outer side extending to the side of the side wall panel. The corner joint is composed of a joint base portion having a hollow portion and a connecting arm portion protruding from one side and a lower portion of the joint base, and the connecting arm portion includes the upper frame member and the side frame. It is preferable to form a cross-sectional shape having substantially the same thickness along the inner surface of the hollow portion in the opening of the material. Here, aluminum means that an aluminum alloy is included.
[0009]
Further, the side frame member has an extending piece having a fitting groove on the short side, the outer side of the long side of the side wall panel is opened, and the short side of the outer side extends to the side of the side panel. It is formed of a hollow extruded shape member made of aluminum having a cross section, and the connecting member is protruded on both side ends of the lower frame member, and is bent perpendicularly from the front end of the straight piece. A long side having an opening while engaging a short side having a fitting groove of the side frame member with an end of the lower frame member. Is engaged with the inner side of the straight piece of the connecting member, the outer short side is engaged with the outer side of the bent piece of the connecting member, and a closing material is inserted into the fitting groove. The lower frame member and the short side of the side frame member are fixed by the fixing member, and the bent piece of the connecting member and the outer side short side of the side frame member are fixed by the fixing member. Preferred (Claim 5)
[0010]
According to this invention comprised as mentioned above, an upper frame material and a side frame material can be connected via a corner joint, and a door frame can be assembled, the door side of an upper frame material and a side frame material One side part of the door packing is fitted in the fitting groove provided on the opening surface, and the other side part can be attached to the ceiling panel or the side wall panel of the track body and fixed by a fixing member. (Claim 1).
[0011]
In this case, the fitting groove is provided with an opening that opens toward the inner side of the track body and a bent portion that is bent in an arc shape toward the outer side of the track body. An arc-shaped insertion piece that is inserted while rotating along the bending portion of the groove, a door-end piece that is bent from the insertion piece, and a fixed piece that comes into contact with the ceiling panel or the side wall panel of the track body are provided. Accordingly, it is possible to easily and firmly attach the door-to-door packing, and it is possible to facilitate replacement.
[0012]
Further, a cast corner having at least an upper frame member and a side frame member formed of an aluminum hollow extruded member and having a connecting arm portion that can be slidably fitted into the hollow portion of the upper frame member and the side frame member. The upper frame member and the side frame member are connected via the joint, and the connecting arm portion of the corner joint, the upper frame member, and the side frame member are fixed by the fixing members, respectively, so that the upper frame member and the side frame are fixed to each other. The connection of the frame members can be made simple and strong (Claim 3). In addition, since the upper frame material and the side frame material can be anodized, it is possible to improve the aesthetics as compared with a conventional frame made of steel or stainless steel.
[0013]
In addition, the upper frame material is formed of a hollow extruded profile with a cross-section that has a fitting groove on the short side and opens in the center of the long side on the ceiling panel side, and the side frame material is fitted on the short side. A corner joint formed by a hollow extruded section having a groove, a cross-section having an opening on the outer side of the long side of the side wall panel and an extending piece with the short side of the outer side extending to the side of the side wall panel Is formed of a joint base portion having a hollow portion and a connecting arm portion projecting from one side portion and a lower portion of the joint base portion, and the connecting arm portion is provided in the opening of the upper frame material and the side frame material. By forming an open cross-sectional shape with substantially the same thickness along the inner surface of the hollow part, it is possible to increase the strength against opening and closing of the door, and to reduce the material of the upper frame material, side frame material and corner joint. (Claim 4).
[0014]
In addition, the side frame member has an extending piece having a fitting groove on the short side, the outer side of the long side of the side wall panel is open, and the short side of the outer side extends to the side of the side wall panel. The connecting member is formed by a hollow extruded shape member made of aluminum having a cross section having a straight piece projecting from both ends of the lower frame member, and is bent in an orthogonal shape from the tip of the straight piece. Formed with an inverted L-shaped metal fitting made of a bent piece, the short side having the fitting groove of the side frame member is engaged with the end of the lower frame member, and the long side having the opening is connected to the connecting member Engaging the inside of the straight piece and engaging the outside short side with the outside of the bent piece of the connecting member, and inserting the closing material into the fitting groove, The short side of the part frame material is fixed with a fixing member, and the bent piece of the connecting member and the outer side short side of the side frame member are fixed with the fixing member, so that it fits into the door side opening surface. Despite having a groove, side It can be firmly connected with the frame member and the lower frame member (claim 5). According to this structure, even if the lower frame material is formed of, for example, a stainless steel material and the side frame material is formed of an aluminum hollow extruded shape, the side frame material and the lower frame material are firmly connected. can do.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a rear door frame of a truck body according to the present invention will be described in detail with reference to the accompanying drawings.
[0016]
1 is a rear view of a truck to which a rear door frame of a truck body according to the present invention is applied, FIG. 2 is a longitudinal sectional view of FIG. 1, and FIG. 3 is a transverse sectional view of FIG.
[0017]
As shown in FIGS. 1 to 3, the truck includes a double door opening / closing door 2 at the rear of a cold truck box body 1, and an upper frame member constituting a mounting portion (frame) of the opening / closing door 2. 10, a pair of left and right side frame members 20 and a lower frame member 30, and a door-to-door packing 40 of the door 2 provided along the upper frame member 10 and the side frame member 20. In this case, the ceiling panel 3 and the side wall panel 4 constituting the track body 1 are each formed of a sandwich panel in which a heat insulating core material 6 such as foamed polyurethane is filled between a pair of aluminum surface plates 5. The open / close door 2 has an exterior panel 2d mounted on the surface of an interior panel 2c filled with a heat insulating core material 2b such as polyurethane foam between a pair of aluminum surface plates 2a. The inner packing 7a that is in close contact with the door, and the outer packing 7b with fins that are in close contact with the door frame, that is, the door side openings of the upper frame member 10, the side frame member 20, and the lower frame member 30, are mounted. Equipped with mating inner packing 7c and finned summing outer packing 7d Has been (See FIGS. 2 and 3).
[0018]
Further, the upper frame member 10 and the side frame member 20 are connected via a corner joint 60, and the side frame member 20 and the lower frame member 30 are connecting members protruding from the lower frame member 30. They are connected via a connecting metal fitting 70.
[0019]
In addition, a fitting groove 50 of the door packing 40 is provided on the door side opening surface of the upper frame material 10 and the side frame material 20, and one side portion of the door packing 40 is in the fitting groove 50. The other side is fixed to the ceiling panel 3 or the side wall panel 4 of the track body 1.
[0020]
In this case, as shown in FIG. 2 and FIG. 5, the upper frame member 10 is made of aluminum having a cross section having a fitting groove 50 on the short side and a central opening 11 in the center of the long side on the ceiling panel side. It is formed of a hollow extruded shape.
[0021]
Moreover, as shown in FIG.3 and FIG.5, the side part frame material 20 has the fitting groove 50 in a short side, has the edge part opening part 21 in the outer side of a side wall panel side long side, and The outer side short side is formed of an aluminum hollow extruded section having a cross section having an extending piece 22 extending to the side wall panel 4 side.
[0022]
As shown in FIGS. 4 and 6 to 8, the fitting groove 50 includes an opening 51 that opens toward the inner side of the track body 1 and an outer side of the track body 1 that is continuous with the opening 51. A bent portion 52 that bends in an arc shape toward the side, and the opening 51 opens at a position lower than the door-side opening surface. A flat portion 53 is formed in the bent portion 52 of the fitting groove 50 in the hollow portion of the upper frame member 10 and the side frame member 20, and the connecting arm portions 63a and 63b of the corner joint 60 described later are in sliding contact with each other. (See FIGS. 4B and 4C).
[0023]
The door-to-door packing 40 is formed of a synthetic resin member such as vinyl chloride, for example, and rotates along the bent portion 52 of the fitting groove 50 as shown in FIGS. 4 and 6 to 8. An arc-shaped insertion piece 41 to be inserted, a door stop piece 42 bent from the insertion piece 41, and a substantially L-shape bent from the tip of the door stop piece 42 to the back side of the door stop piece 42. A reinforcing piece 43 and a fixing piece 44 that is bent from the tip of the reinforcing piece 43 and is brought into contact with the ceiling panel 3 or the side wall panel 4 of the track body 1 are provided. In this case, since the thickness of the ceiling panel 3 is smaller than the height (long side) dimension of the upper frame member 10, the reinforcing piece 43 is formed longer than the door stop piece 42 (see FIG. 7).
[0024]
In order to attach the door-to-door packing 40 configured as described above to the upper frame member 10 and the ceiling panel 3, as shown in FIG. 51, and is inserted while being rotated along the bent portion 52, and the fixed piece 44 and the ceiling panel 3 are appropriately spaced with the fixed piece 44 in contact with the inner lower surface of the ceiling panel 3. A fixed member, for example, a blind rivet 80 (hereinafter referred to as a rivet) is fixed and attached.
[0025]
Moreover, in order to attach the door-end packing 40 to the side frame member 20 and the side wall panel 4, it can be attached in the same manner as described above. That is, as shown in FIG. 8, the arc-shaped insertion piece 41 of the door-to-door packing 40 is inserted into the opening 51 of the fitting groove 50 provided in the side frame member 20 and is rotated along the bent portion 52. The fixing piece 44 and the side wall panel 4 are fixed and attached by a bed 80 (fixing member) at an appropriate interval with the fixing piece 44 in contact with the inner side surface of the side wall panel 4.
[0026]
As shown in FIG. 6, the adjacent portions of the door-to-door packing 40 provided along the upper frame member 10 and the side frame member 20 are respectively end portions. Was cut The door packings 40 are connected to each other by contacting each other.
[0027]
In addition, when replacing the door-to-door packing 40, after cutting the rivet 8 that fixes the fixed piece 44 and the ceiling panel 3 or the side wall panel 4, the insertion piece 41 is rotated from within the bent portion 52 of the fitting groove 50. Then, pull out and remove, and attach a new door-to-door packing 40 in the same manner as described above.
[0028]
On the other hand, the corner joint 60 is formed of, for example, an aluminum casting. As shown in FIGS. 4 to 6, the joint base 62 having a hollow portion 61 opened on the track body side and one of the joint bases 62. Connecting arm portions 63a and 63b projecting from the side and the lower portion are provided. In this case, the connecting arm portion 63a protruding from one side portion of the joint base portion 62 has a cross-sectional shape with an opening having substantially the same thickness along the inner surface of the hollow portion in the central opening portion 11 of the upper frame member 10 ( It is formed in a substantially cross-sectional C shape (see FIG. 4B). In addition, the connecting arm portion 63b projecting from the lower portion of the joint base portion 62 has a cross-sectional shape (substantially the same thickness) opened along the inner surface of the hollow portion in the end opening 21 of the side frame member 20. (C-shaped cross section) (see FIG. 4C).
[0029]
The joint base 62 of the corner joint 60 is provided with a mounting step 64 for fitting a top rail 90 having a substantially L-shaped cross section formed of, for example, an aluminum extruded profile located at the upper end of the side wall panel 4. And the collar part 65 which has the same outline as the external outline of the top rail 90 is provided. In this case, the mounting step portion 64 is provided with a guide groove 66 that slidably guides the thick portion 91 provided on the top rail 90.
[0030]
As described above, the corner joint 60 is connected to the joint base 62 having the hollow portion 61 and the inner surface of the hollow portion in the central opening 11 of the upper frame member 10 or the end opening 21 of the side frame member 20. By comprising the connecting arm portions 63a and 63b formed in an open cross-sectional shape (substantially cross-sectional C shape) having substantially the same thickness, the weight and material of the corner joint 60 can be reduced.
[0031]
In order to connect the upper frame member 10 and the side frame member 20 using the corner joint 60 configured as described above, the connecting arm portion 63a is slidably fitted into the hollow portion of the upper frame member 10, In a state where the connecting arm portion 63b is slidably fitted into the hollow portion of the side frame member 20, the connecting arm portion 63a and the long side portion 12 having the central opening portion 11 of the upper frame member 10 are connected to a rivet 81 (fixing member). The connecting arm portion 63b and the long side portion 23 having the end opening 21 and the short side portion 24 having the extending piece 22 are fixed by a rivet 82 (fixing member). (See FIG. 4). As a result, the upper frame member 10 and the side frame member 20 are connected in a narrow work place as compared with the conventional frame operation in which the upper frame member and the side frame member are connected by welding to form a gate shape. In addition, it is advantageous in terms of stock and can be easily carried.
[0032]
The top rail 90 fitted to the mounting step portion 64 of the corner joint 60 is the same as the outer surface of the flange portion 65 of the corner joint 60 with the thick portion 91 and the corner joint 60 fixed by a rivet 83. Aligned on the surface. Further, a sealing material 100 is filled in a gap between the end portion of the top rail 90 and the ceiling panel 3 and the side wall panel 4.
[0033]
On the other hand, the lower frame member 30 is formed by bending, for example, a stainless or steel plate material by pressing or the like, and as shown in FIG. 9 and FIG. A lower horizontal piece 32 which is bent orthogonally to the lateral side, an upper horizontal piece 33 which is bent orthogonally inward from the upper end of the vertical piece 31 and is slightly wider than the lower horizontal piece 32, and an upper horizontal piece A hanging piece 34 bent perpendicularly downward from the tip of 33 and a horizontal placing piece 35 on which the floor panel 8 is placed, which is bent perpendicularly inward from the lower end of the hanging piece 34. It is configured.
[0034]
A stainless or steel mounting plate 36 is fixed by welding to the openings at both end portions of the lower frame member 30 configured as described above, and the lower frame member 30 and the side are mounted on the surface of the mounting plate 36. A connection fitting 70 (connection member) made of stainless steel or steel that connects the frame member 20 is projected by welding. In this case, the connecting metal fitting 70 has a cross-section reverse L made up of a straight piece 71 projecting from both ends of the lower frame member 30 and a bent piece 72 bent perpendicularly from the tip of the straight piece 71. It is formed in a letter shape.
[0035]
In order to connect the side frame member 20 and the lower frame member 30, as shown in FIG. 9, the short side having the fitting groove 50 of the side frame member 20 is connected to the end of the lower frame member 30, that is, the mounting plate 36. The long side having the end opening 21 is engaged (contacted) with the inner side of the straight piece 71 of the connection fitting 70 and the outer short side is connected to the connection fitting. It is engaged (contacted) outward of the 70 bent pieces 72 and fixed by fixing members such as rivets 84 and 85. At this time, in the fitting groove 50 engaged (contacted) with the mounting plate 36. Pre-sealing material 73 And the lower frame member 30 and the short side portion 24 of the side frame member 20 are fixed by the rivets 84. Further, the bent piece 72 of the connecting metal fitting 70 and the outer side short side portion 24 of the side frame member 20 are fixed by a rivet 85.
[0036]
As described above, the closing material 73 is inserted into the fitting groove 50 to fix the lower frame member 30 and the short side portion 24 of the side frame member 20 with the rivets 84, and the bent piece 72 of the connecting metal fitting 70. And the outer side short side portion 24 of the side frame member 20 are fixed by a rivet 85, so that the side frame member 20 and the lower frame member 30 are provided despite having the fitting groove 50 on the door side opening surface. Can be firmly connected. Further, the lower frame member 30 made of stainless or steel, which is a different material, and the side frame member 20 made of aluminum can be firmly connected.
[0037]
In the above description, the lower frame member 30 is formed of stainless steel or a steel material. However, the lower frame member 30 may be formed of an extruded aluminum member.
[0038]
In the above embodiment, the connecting arm portions 63 a and 63 b of the corner joint 60 are slidably contacted with the flat portion 53 of the bent portion 52 of the fitting groove 50 in the hollow portion of the upper frame member 10 and the side frame member 20. The case where it is formed in a C-shape has been described, but as shown in FIGS. 11A and 11B, the cross-sectional shapes of the connecting arm portions 63a and 63b of the corner joint 60 are defined by the upper frame member 10 and the side frame. It is also possible to adopt a shape that matches the contour of the hollow portion of the material 20. Thus, by making the cross-sectional shape of the connecting arm portions 63a and 63b of the corner joint 60 match the contours of the hollow portions of the upper frame member 10 and the side frame member 20, the upper frame member 10 and the side are further reduced. The connection of the part frame member 20 can be strengthened.
[0039]
Moreover, in the said embodiment, since the thickness of the ceiling panel 3 is smaller than the height (long side) dimension of the upper frame material 10, as shown in FIG. Although the case where it was formed longer was demonstrated, as shown in FIG. 12, when the thickness of the ceiling panel 3 is the same as the height (long side) dimension of the upper frame member 10, the reinforcing piece 43 and the door stop piece 42 may have the same length. As shown in FIG. 13, when the thickness of the ceiling panel 3 is larger than the height (long side) dimension of the upper frame member 10, the ceiling panel 3 receives a load (impact) applied to the door stop piece 42. Therefore, the fixed piece 44 may be bent from the door stop piece 42 without providing the reinforcing piece 43.
[0040]
【The invention's effect】
As described above, since the rear door frame of the truck body according to the present invention is configured as described above, the following effects can be obtained.
[0041]
(1) According to the invention described in claim 1, the door frame can be assembled by connecting the upper frame member and the side frame member via the corner joint, and the door side of the upper frame member and the side frame member. One side part of the door packing is fitted in the fitting groove provided on the opening surface, and the other side part can be attached to the ceiling panel or the side wall panel of the track body and fixed by a fixing member. Therefore, it is possible to simplify the connection work and repair work of the upper frame material and the side frame material without taking a wide space, and it is possible to facilitate the installation and replacement work of the door-to-door packing.
[0042]
(2) According to the invention described in claim 2, the fitting groove has an opening that opens toward the inner side of the track body, and a bent portion that bends in an arc shape toward the outer side of the track body. An arc-shaped insertion piece that is inserted into the door-end packing while rotating along the bent portion of the fitting groove, a door-end piece bent from the insertion piece, and a track panel ceiling panel or side wall panel In addition to the above (1), the door-to-door packing can be easily and firmly attached and can be easily replaced.
[0043]
(3) According to invention of Claim 3, the corner made from a casting which has a connection arm part which can be slidably fitted in the hollow part of the top frame material and side part frame material which are formed with the aluminum hollow extrusion shape material By connecting the upper frame member and the side frame member through the joint, and fixing the connecting arm portion of the corner joint, the upper frame member and the side frame member with the fixing members, respectively, (1) and In addition to (2), the connection between the upper frame member and the side frame member can be further simplified and strengthened. In addition, since the upper frame material and the side frame material can be anodized, it is possible to improve the aesthetics as compared with a conventional frame made of steel or stainless steel.
[0044]
(4) According to the invention of claim 4, the upper frame member is formed of a hollow extruded section having a cross-section having a fitting groove on the short side and opening at the center of the long side of the ceiling panel, The side frame material has a fitting groove on the short side, an opening on the outer side of the long side of the side wall panel, and an extending piece in which the short side of the outer side extends on the side of the side wall panel. The corner joint is formed of a hollow extruded shape member, and includes a joint base portion having a hollow portion and a connecting arm portion projecting from one side portion and a lower portion of the joint base portion. In addition to the above (3), the door can be further opened and closed by forming an opening having substantially the same thickness along the inner surface of the hollow portion in the opening of the material and the side frame material. In addition, the material of the upper frame material, the side frame material and the corner joint can be reduced.
[0045]
(5) According to the invention of claim 5, the side frame member has a fitting groove on the short side, the outer side of the long side of the side wall panel is open, and the short side of the outer side is the side wall. Formed with a hollow extruded aluminum member with a cross section having an extending piece extending to the panel side, and a connecting member formed with a reverse L-shaped metal fitting protruding from both side ends of the lower frame member And the short side having the fitting groove of the side frame member is engaged with the end of the lower frame member, the long side having the opening is engaged with the inside of the straight piece of the connecting member, and Engage the short side of the side with the outside of the bent piece of the connecting member, insert the closing material into the fitting groove, and fix the lower frame material and the short side of the side frame material with the fixing member At the same time, since the bent piece of the connecting member and the outer short side portion of the side frame member are fixed by the fixing member, in addition to the above (1) to (4), the fitting groove is further formed in the door side opening surface. Despite having side frame material and The connection between the parts frame member can be strengthened (claim 5). Further, even if the lower frame material is formed of, for example, a stainless steel material and the side frame material is formed of an aluminum hollow extruded shape, the side frame material and the lower frame material can be firmly connected. The effect is obtained.
[Brief description of the drawings]
FIG. 1 is a rear view of a truck to which a rear door frame of a truck body according to the present invention is applied.
FIG. 2 is a longitudinal sectional view of FIG.
FIG. 3 is a lateral view of FIG. 1;
4 is an enlarged cross-sectional view of part I in FIG. 1 (a), a cross-sectional view along line III-III in (a), and a cross-sectional view along line IV-IV in (a) (c). is there.
FIG. 5 is a cross-sectional view showing a connecting portion between an upper frame member and a side frame member in the present invention.
FIG. 6 is a cross-sectional perspective view showing a state where the upper frame member and the side frame member are connected to each other and the door-to-door packing is attached according to the present invention.
FIG. 7 is a cross-sectional view showing an attached state of the upper frame member and door-to-door packing.
FIG. 8 is a cross-sectional view showing an attached state of the side frame member and door-to-door packing.
FIG. 9 is an enlarged cross-sectional view of a portion II in FIG.
FIG. 10 is a perspective view showing a lower frame member in the present invention.
FIG. 11 is a cross-sectional view showing another connection state of the upper and side frame members and the corner joint in the present invention.
FIG. 12 is a cross-sectional view showing a mounting state of another form of door-to-door packing according to the present invention.
FIG. 13 is a cross-sectional view showing a mounting state of still another form of door-to-door packing according to the present invention.
[Explanation of symbols]
1 Track body
2 door
3 Ceiling panel
4 Side panel
10 Upper frame material
11 Central opening
12 Long side
20 Side frame material
21 End opening
22 Extension piece
23 Long side
24 Short side
30 Lower frame material
36 Mounting plate
40 packing per unit
41 Circular insert
42 pieces per door
44 fixed piece
50 Mating groove
51 opening
52 bent part
60 corner joint
61 Cavity
62 Joint base
63a, 63b connecting arm
70 Connecting bracket (connecting member)
71 Straight piece
72 folded pieces
73 Closing material
80, 81, 82, 84, 85 Rivet (fixing member)

Claims (5)

An upper frame member, a pair of left and right side frame members and a lower frame member that constitute a mounting portion of the rear opening / closing door of the box box body for cold insulation, and the door installed along the upper frame member and the side frame member. A rear door frame of a truck body having a door-to-door packing,
The upper frame member and the side frame member are connected via a corner joint, and the side frame member and the lower frame member are connected via a connecting member protruding from the lower frame member,
On the door side opening surface in the upper frame material and the side frame material, a fitting groove for the door-to-door packing is provided,
One side portion of the door-end packing is fitted into the fitting groove, and the other side portion is in contact with a ceiling panel or a side wall panel of the track body and is fixed by a fixing member. Rear body frame of truck body to play. The rear door frame of the truck body according to claim 1,
The fitting groove includes an opening that opens toward the inner side of the track body, and a bent portion that is continuous with the opening and bends in an arc shape toward the outer side of the track body.
The door-to-door packing includes an arc-shaped insertion piece that is inserted while rotating along the bent portion of the fitting groove, a door-end piece that is bent from the insertion piece, and a ceiling panel or a side wall panel of the track body. A rear door frame of a truck body comprising a fixed piece to be abutted. The rear door frame of the truck body according to claim 1 or 2,
At least the upper frame material and the side frame material in the upper frame material, the side frame material, and the lower frame material are formed of an aluminum hollow extruded shape,
The upper frame member and the side frame member are connected via a cast corner joint having a connecting arm portion that can be slidably fitted into the hollow portion of the upper frame member and the side frame member, and the connecting arm portion of the corner joint is connected. And a rear door frame of the truck body, wherein the upper frame member and the side frame member are respectively fixed by a fixing member. The rear door frame of the truck body according to claim 3,
The upper frame material is formed with a hollow extruded profile having a cross-section that has a fitting groove on the short side and is open at the center of the long side on the ceiling panel side,
Cross section having the side frame material having a fitting groove on the short side, an opening on the outer side of the long side of the side wall panel, and an extending piece in which the short side of the outer side extends to the side of the side wall panel Formed with a hollow extruded shape of
The corner joint is composed of a joint base portion having a hollow portion and a connecting arm portion projecting from one side and a lower portion of the joint base, and the connecting arm portion includes the upper frame material and the side frame material. A rear door frame of a truck body, wherein the rear door frame is formed in a cross-sectional shape having substantially the same thickness along the inner surface of the hollow portion in the opening. The rear door frame of the truck body according to any one of claims 1 to 4,
Cross section having the side frame material having a fitting groove on the short side, an opening on the outer side of the long side of the side wall panel, and an extending piece in which the short side of the outer side extends to the side of the side wall panel Formed with a hollow extruded shape made of aluminum,
The connecting member is an inverted L-shaped bracket made up of a straight piece projecting from both ends of the lower frame member and a bent piece bent perpendicularly from the tip of the straight piece. Forming,
The short side having the fitting groove of the side frame member is engaged with the end of the lower frame member, the long side having the opening is engaged with the inside of the straight piece of the connecting member, and Engage the outer short side with the outer side of the bent piece of the connecting member,
The closing material is inserted into the fitting groove to fix the lower frame material and the short side portion of the side frame material with a fixing member, and the bent piece of the connecting member and the outer side of the side frame material A rear door frame of a truck body, wherein a short side portion is fixed by a fixing member.

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