JP2543580Y2 - Wing door opening and closing structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an opening / closing structure of a wing door installed on a truck bed of a lorry, for example, relates to an opening / closing structure of a wing door having a structure in which a frame is covered with a sheet. .

2. Description of the Related Art Conventionally, in a lorry, a side opening vehicle having a wing door opening / closing structure that opens the side surface of the luggage over the entire surface in order to facilitate loading and unloading of luggage into the luggage compartment. Has been proposed by the present applicant. The conventional wing door opening / closing structure will be briefly described with reference to the drawings. FIG. 3 is a side view of the conventional wing door opening / closing structure. In this figure, arches 100 serving as support members for wing doors are provided at the front and rear edges of the loading platform, respectively. A center frame 8 is fixed to a substantially central portion above the arch 100. A center plate 9 having a support pin 10 fixed at the center is further bolted to the center frame 8.

On the other hand, holes 8a are provided on both sides of the center frame 8, and the skeleton frame 1 serving as the skeleton of the wing door is provided.
End 7 extending from one end of the carrier in the longitudinal direction of the carrier
Is rotatably supported by a hole 8a so as to be able to move between an open state shown by a solid line and a closed state shown by a broken line. In the vicinity of the hole 8a, a stop portion 120 shown by a broken line is further provided, and after the end 1a of the skeleton frame 1 is turned to the position shown by the solid line in the direction of the arrow, the end 1a is stopped.
It abuts on 120 to prevent further rotation.

On the other hand, a bracket 20 is fixed to a portion forming a roof of the skeleton frame 1 by welding, and the angle bracket 30 is fastened by bolts and nuts. As shown, a long bolt 4 having a hook portion 4a formed at one end of the angle bracket 30 is made adjustable by a long nut 5 and is screwed to the angle bracket 30. One end 60a of the tension spring 60 is hung by the support pin 10 and the other end 60b is hung by the hook portion 4a. The skeletal frame 1 is stretched in the closed position shown by the broken line. With the center line of the spring 60 positioned below the rotating end 7, the component force of the tension force by the tension spring 60 acts on the skeletal frame 1 in a further closing direction. After being rotated in the direction of the arrow and the center line of the tension spring 60 is positioned above the rotating end 7, the component force of the tension force by the tension spring 60 is reduced to the skeletal frame 1.
Is further acted in the opening direction to reduce the burden on the operator when opening and closing the wing door.

[Problem to be Solved by the Invention] However, in the conventional wing door opening / closing structure as described above, one end 60a of the tension spring 60, which is a tension means, is rotatably supported by the support pin 10. However, since the other end 60b is supported so as not to rotate, the other end 60b of the tension spring 60, which is a tension means, is moved while generating undulations or the like at the hook portion 4a of the long bolt 4, and as a result, There was a problem that the tension force of the tension spring 60 could not be transmitted sufficiently, which hindered the opening and closing of the wing door.

Accordingly, the present invention has been made in view of the above-described problems, and has as its object the purpose of the present invention to be substantially at the center of the upper part of the support provided at the front and rear edges of the truck carrier. A wing door formed by covering a sheet on a skeletal frame having a rotating end rotatably supported at a site,
In a wing door opening / closing structure provided with tension means, one end of which is rotatably supported from the center of the upper end of the rotating end and the other end is supported by the roof of the skeletal frame. By transmitting the pulling force of the means to the wing door without waste, the wing door can be opened and closed with a light force without hindrance, sufficient strength can be secured from the roof to the side of the frame, and the pulling spring It is an object of the present invention to provide a wing door opening / closing structure capable of adjusting the pulling force of the wing door after assembly.

[Means for Solving the Problems] and [Operation] In order to solve the above-mentioned problems and achieve the object, the opening / closing structure of the wing door according to the present invention includes a front edge portion and a rear edge of a truck bed of a truck. A wing door formed by placing a sheet on a skeletal frame having a rotating end rotatably supported at a substantially central portion of a support upper portion provided in the portion,
A wing door opening / closing structure having tension means supported at one end rotatably at the front edge rotating end from the center of the upper portion of the support and at the other end supported by the roof of the skeletal frame. A rotation bracket is provided rotatably with respect to a reinforcing bracket fixed to the roof portion and the upper side of the skeleton frame, and the other end of the tension means is supported by the rotation bracket; The wing door is opened by a light operation by the tension assist of the tension means and the rotation of the rotating bracket, and further rotation of the wing door is regulated by a regulating member. .

Further, the invention is characterized in that the other end of the tension means is hooked on a hook portion of a long bolt provided to be adjustable in the rotary bracket.

With the above configuration, the strength of the bent portion from the roof portion to the side portion of the skeletal frame can be sufficiently secured by the reinforcing bracket, and the tension spring of the tension means whose both ends are rotatably supported is provided by the wing door. The opening and closing of the wing door is prevented by the turning operation of the turning bracket, and the pulling force of the pulling spring is transmitted to the skeleton frame without waste, so that the wing door can be opened and closed with a light force without any trouble. Work like that. Also, the tension force of the tension spring can be adjusted after assembly.

[Embodiment] Hereinafter, an embodiment of a wing door opening / closing structure according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a partial side view of a wing door opening / closing structure according to a first embodiment. In this figure, arches 100 serving as support members for wing doors are provided at the front and rear edges of the loading platform, respectively. A center frame 8 is fixed to a substantially central portion above the arch 100. A center plate 9 having a support pin 10 fixed at the center is further bolted to the center frame 8.

On the other hand, holes 8a are provided on both sides of the center frame 8, and the rotating end 7 extending from one end of the skeletal frame 1 serving as the skeleton of the wing door in the longitudinal direction of the loading platform is provided with respect to the holes 8a. And is rotatably supported so that it can be moved between an open state shown by a solid line and a closed state shown by a broken line. In the vicinity of the hole 8a, a stop portion 120 shown by a broken line is further provided.
After being rotated to the position shown by the solid line in the direction of the arrow, the end portion 1a abuts against the stopper portion 120 to prevent further rotation.

On the other hand, a bracket 2 having a shape shown in the figure is fixed to the corner portion forming the roof portion and the side surface portion of the skeleton frame 1 by welding so as to also reinforce the skeleton frame 1. It is supported so that it can rotate freely.

FIG. 2 is an exploded perspective view showing a state in which the angle bracket 30 is rotatably supported on the bracket 2.
In this drawing, the angle bracket 30 has a U-shape as shown in the drawing, and has a turning hole 3a formed at the bottom, and a through hole for inserting the screw portion 4b of the long bolt 4 at the upper part of both sides. Portions 3b are respectively formed. After the long nut 5 is inserted through the insertion hole 3b, the screw 4b of the long bolt 4 is
When the long nut 5 is rotated in such a manner as to be screwed in, the tension of the tension spring 6 can be adjusted in the longitudinal direction of the long bolt 4 so that the tension spring 6 is hooked on the hook portion 4a. The tension can be adjusted.

Prior to the attachment of the long bolt 4, in order to hold the angle bracket 3 rotatably with respect to the bracket 2, a stepped portion is formed in the rotation hole 3a of the angle bracket 3.
After the bush 13 having the communication hole 13c and the bush 13 is inserted, the bolt 12 inserted into the washer 15 is inserted into the communication hole 13c of the bush 13, and then the tip of the bolt 12 is inserted into the hole 2a of the bracket 2. After inserting the spring washer
The nut 11 is tightened via 14 and attached. Butsushiyu
Since the step 13a of the thirteen has an outer dimension (diameter and height) that can freely move in the rotation hole 3a of the angle bracket 3, the angle bracket 3 is tightened by the bolt 12.
Is configured to be able to freely rotate.

Again, in FIG. 1, one end 6a of the tension spring 6 is hooked by the support pin 10 while the other end 6b is hooked.
When the skeletal frame 1 is in the closed position shown by the broken line, the center line of the tension spring 6 is positioned below the rotating end 7 so as to be pulled by the tension spring 6. A state in which the component force of the tension force acts on the skeletal frame 1 in a further closing direction, and the skeletal frame 1 is rotated in the direction of the arrow so that the center line of the tension spring 6 is located above the rotation end 7. After that, the component force of the tension force by the tension spring 6 acts on the skeletal frame 1 in a further opening direction,
It is configured to reduce the burden on the operator when opening and closing the wing door.

At the time of opening / closing, since both ends 6a and 6b of the tension spring 6 are rotatably supported, when the wing door is opened / closed, stiffness or the like is prevented, and the tension force of the tension spring 6 is wasted. The wing door can be opened and closed without hindrance by sufficiently transmitting the information.

Here, the other end 6b of the tension spring 6 is also similar to the one end 6a,
A configuration in which the action force of the tension spring 6 can sufficiently act on the skeletal frame 1 by being rotatably supported by the support pin 10 may be considered. However, with this configuration, since the long bolt 4 is not provided, the tension is increased. Not only is it impossible to adjust the tension of the spring 6, but also the assembling work becomes difficult, which is not preferable.

Next, FIG. 4 is an external perspective view of the wing door opening / closing structure of the second embodiment. In this figure, the configuration is substantially the same as the configuration described in FIG. 1 and FIG. 2. Therefore, the same parts are denoted by the same reference numerals as those in FIG. At the front and rear edges of the carrier, a center frame 8 is fixed substantially at the center of an arch 100 serving as a support for the wing door, and the ends of the pair of reinforcing members 101 along the longitudinal direction of the carrier are fixed by the center frame 8. It is fixed and provided. A center plate 9 having a support pin 10 fixed at the center is further bolted to the center frame 8.

On the other hand, on the upper part of the reinforcing member 101, there is provided a rotating bracket 102 for rotatably supporting the rotating end 7 which is extended from one end of the skeletal frame 1 serving as the skeleton of the wing door in the longitudinal direction of the carrier. I have. A torsion spring 105 is provided on a part of the rotating bracket 102 so as to be urged to open the skeleton frame 1. The metal fittings 100a are fixed to upper portions on both sides of the arch 100, while the skeletal frame 1
Metal fittings 1a are also fixed inside, and both ends of the chain 103 are supported by these metal fittings, so that the chain 103 is extended in the open state as shown, so that it does not open any more. Have been. A tension spring 104 is further stretched between the intermediate portion of the chain 103 and the above-described rotation shaft end 7, and when the skeletal frame 1 is closed by the tension spring 104, The slack chain 103 is housed inside by the tension spring 104 so that the chain 103
It is designed to prevent it from hanging down in front of or inside 0.

According to the configuration described above, the skeleton frame 1 can be regulated at a position where the skeleton frame 1 is opened by about 90 degrees by the chain 103 instead of the stopper 120.

In the embodiment described above, the tension means is the tension spring 6, and the wing door is limited to the structure having the skeletal frame 1. However, the tension means is a rubber body or a shock integrally formed with a shock absorbing function. It goes without saying that the wing door may be constructed by attaching the front aluminum panel while the absorber is used. In short, it is important to support both ends of the tension means rotatably.

[Effects of the Invention] As described above in detail, according to the present invention, the truck is rotatably supported at substantially the center of the upper portion of the support provided at the front edge and the rear edge of the carrier. A wing door formed by placing a sheet on a skeletal frame having a rotating end,
In a wing door opening / closing structure provided with tension means, one end of which is rotatably supported from the center of the upper end of the rotating end and the other end is supported by the roof of the skeletal frame. By transmitting the pulling force of the means to the wing door without waste, the wing door can be opened and closed with a light force without hindrance, the pulling force of the pulling spring can be adjusted after assembly, and from the roof of the skeletal frame to the side It is possible to provide a wing door opening / closing structure that can sufficiently secure the strength of the wing door.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial side view of a wing door opening / closing structure of a first embodiment, and FIG. 2 shows a state where an angle bracket 3 is rotatably supported with respect to the bracket 2. FIG. 3 is a side view of a conventional wing door, and FIG. 4 is an external perspective view of a wing door opening / closing structure according to a second embodiment. In the figure, 1 ... skeleton frame, 2 ... bracket (reinforcement bracket), 3 ... angle bracket (rotation bracket),
4 ... Long bolt, 4a ... Hook part, 5 ... Long nut,
6 ... tension spring (tension means), 6a ... one end, 6b ... other end,
7: Rotating end, 8: Center frame, 9: Center plate, 10: Support pin, 13: Bush, 100: Arch, 103
... chains, 104 ... tension springs.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Tadashi Hatta 126 Maruyasu Co., Ltd., located at 5 Hachiwada, Miyoshi-cho, Nishikamo-gun, Aichi Prefecture. ) Actually open 63-194027 (JP, U) Actually open 61-98616 (JP, U) Actually open 1986-171623 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A skeletal frame having a pivoting end rotatably supported at a substantially central portion of an upper portion of a support disposed at a front edge and a rear edge of a truck of a lorry. A wing door, and a tensioning means, one end of which is rotatably supported at a center of the rotating end from the center of the upper part of the support, and the other end of which is supported by a roof of the skeleton frame. A door opening / closing structure, wherein a rotating bracket is provided rotatably with respect to a reinforcing bracket fixed to the roof portion and an upper side of the skeletal frame, and the other end of the tension means is connected to the rotating bracket. And the other end of the tension means is hooked on a hook portion of a long bolt provided so as to be adjustable on the rotation bracket, and the tension assist of the tension means and the rotation bracket The opening / closing structure of the wing door, wherein the wing door is opened by a light operation by the rotation of the wing door, and further rotation of the wing door is regulated by a regulating member.