JPH0692355A - Pivoting mechanism of opening and closing door for container - Google Patents

Abstract

PURPOSE:To prevent a leg part from dropping off a bearing protrusion while an opening and closing door is standing, by preventing inward deformation of the leg part. CONSTITUTION:A pivot 7 is, provided protrudingly on a counter surface of bearing protrusions 6 which are provided in a pair on a bottom plate 4. A drop-off preventing protrusion 8 is provided protrudingly substantially in the central part of an upper surface of the bottom plate 4 between the bearing protrusions 6. A pair of leg parts 11 are provided protrudingly at a lower end of the opening and closing door 3. A bearing hole 13 is formed in an external surface of an elastic leg part 11a which is one of the leg parts 11. A cutout, bearing hole 12 in which a part of an external periphery is cut out is formed in an external surface of the other leg part 11. A cutting direction of a cutout 12a is set so that the opening and closing door 3 is directed downward when it is moved substantially to be in parallel with the bottom plate 4. The cutout bearing hole 12 and the bearing hole 13 are pivoted rotatably on the pivot 7. When the opening and closing door 3 is standing up from the bottom plate 4, the tip end of the leg part 11 is positioned below an upper edge of the drop-off preventing protrusion 8, which occupies a position between the leg parts 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container having an opening / closing door such as a carrying container.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 9, a container such as a container for transportation has a bottom plate having a lower end of an opening / closing door which is pivotally supported on a bottom plate. In a structure in which the lower end of an opening / closing door 3 forming at least a part of the side wall 2 is rotatably supported by a bottom plate 4, a pair of bearing projections 6 facing the bottom plate 4 with a gap 5 therebetween. A supporting shaft 7 is projected on the facing surface of the pair of bearing projections 6, and a pair of opposing leg portions 11 is projected on the lower end of the opening / closing door 3 with a gap 9 interposed between at least one of them. The leg portion 11 of is made elastically deformable elastic leg portion 11a, and this elastic leg portion 11
A bearing hole 13 is formed on the outer surface of a, and a notch bearing hole 12 is formed on the outer surface of the other leg 11 by cutting out a part of the outer periphery of the support shaft 7 so that the support shaft 7 can be inserted. The notch direction of the notch 12a of the hole 12 is set so as to face downward when the opening / closing door 3 is substantially parallel to the bottom plate 4, and the notch bearing hole 12 and the bearing hole 13 form a pair of bearing protrusions 6, respectively. It is known that the shaft 7 is rotatably supported by a support shaft 7 provided on the facing surface of the. In this case, in order to rotatably attach the opening / closing door 3 which is separate from the bottom plate 4, to the bottom plate 4, the opening / closing door 3 is placed sideways so as to be parallel to the bottom plate 4. Notch 12 of notch bearing hole 12 of leg 11
Since a faces downward, in this state, the notch bearing hole 12 of the one leg 11 is fitted into the one support shaft 7 from above at the notch 12a, and at the same time, the other leg 11 having elastic deformability is elastically deformed. Then, the bearing hole 13 is fitted into the other support shaft 7, and the opening / closing door 3 is erected in this state so that the opening / closing door 3 does not come out upward in the erected state.

[0003]

However, in the above-mentioned conventional example, when the leg portion 11 is elastically deformed inward even when the leg portion 11 is elastically deformed in the upright state, the bearing hole 1
There was a case where 3 was disengaged from the support shaft 7.
The present invention has been made in view of the above-mentioned problems of the conventional example, and an object thereof is to easily fit the notch bearing hole and the bearing hole of the opening / closing door into the bearing protrusions, and , When the opening / closing door is erected after being fitted, even if an external force acts to deform the legs inward, it is possible to prevent the legs from elastically deforming inward and coming off the bearing protrusions. To provide a pivotal structure.

[0004]

According to the pivotal structure of the container opening / closing door of the present invention, the lower end of the opening / closing door 3 forming at least a part of the side wall 2 of the container 1 is pivotally supported on the bottom plate 4 so as to be tiltable. In this case, a pair of bearing projections 6 are provided on the bottom plate 4 so as to face each other with a gap 5 therebetween, and a support shaft 7 is provided on the facing surface of the paired bearing projections 6 to form a pair. Bottom plate 4 between bearing protrusions 6
A pair of leg portions 1 is provided with a protrusion 8 for preventing separation, which is provided substantially at the center of the upper surface, and which faces the lower end of the opening / closing door 3 with a gap 9 therebetween.
1 is projected, at least one leg 11 is an elastically deformable elastic leg 11a, a bearing hole 13 is formed on the outer surface of this elastic leg 11a, and one outer peripheral portion is formed on the outer surface of the other leg 11. A state in which a notch bearing hole 12 is formed in such a size that the support shaft 7 can be inserted into the notch bearing hole 12, and the notch 12a of the notch bearing hole 12 has a notch direction in which the opening / closing door 3 is substantially parallel to the bottom plate 4. Is set so as to face downward, and the distance from the center of the bearing hole and the notched bearing hole 12 to the tip of the leg 11 is set so that the opening / closing door 3 is substantially parallel to the bottom plate 4.
3 and the distance from the center of the notch bearing hole 12 to the side edge below the leg portion 11, and the notch bearing hole 12 and the bearing hole 13 are provided on the facing surfaces of the paired bearing protrusions 6, respectively. The opening / closing door 3 is rotatably supported on the support shaft 7, and the opening / closing door 3 is attached to the bottom plate 4
The leading end of the leg portion 11 is positioned below the upper end of the detachment preventing protrusion 8 so that the detachment preventing protrusion 8 is positioned between the two leg portions 11 in an upright state. By adopting such a configuration, the problems of the conventional example described above are solved and the object of the present invention is achieved.

[0005]

In the present invention having the above-mentioned structure, however, at least one leg portion 11 is an elastically deformable elastic leg portion 11a, and the bearing hole 1 is formed on the outer surface of the elastic leg portion 11a.
3 is formed, and a cutout bearing hole 12 is formed on the outer surface of the other leg 11 by cutting out a part of the outer peripheral portion of the support shaft 7 so that the support shaft 7 can be inserted through the cutout bearing hole 12.
Since the notch direction is set to face downward with the opening / closing door 3 being substantially parallel to the bottom plate 4, the opening / closing door 3 should be set substantially parallel to the bottom plate 4 when mounting the opening / closing door 3. In the laid state, the cutout portion 12a of the cutout bearing hole 12 is fitted into the one support shaft 7, and at the same time, the elastic leg portion 11a having elasticity of the other is elastically deformed to fit the bearing hole 13 into the other support shaft 7. Is something that can be done. And
From the center of the bearing hole 13 and the notch bearing hole 12 to the leg 11
The distance from the center of the bearing hole 13 and the notch bearing hole 12 to the side edge below the leg 11 when the opening / closing door 3 is substantially parallel to the bottom plate 4,
In a state in which the notch bearing hole 12 and the bearing hole 13 are rotatably supported by the support shaft 7 provided on the facing surface of the pair of bearing protrusions 6 and the opening / closing door 3 is erected with respect to the bottom plate 4. By setting the tip of the leg portion 11 to be positioned below the upper end of the detachment preventing protrusion 8 so that the detachment preventing protrusion 8 is located between the two leg portions 11, the opening / closing door 3 is raised. In the closed state, the separation preventing protrusion 8 is located between the lower ends of the legs 11, and as a result, even if an external force acts on the legs 11 and the legs 11 elastically deform inward, the separation preventing protrusions 8 are formed. When hitting, support shaft 7
The bearing hole 13 does not come off.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings. 2 and 3 show one embodiment of the container of the present invention. A side wall 2 is provided around the upper surface of the bottom plate 4 to form a container having an open top. An opening / closing door 3 which constitutes at least a part of the side wall 2 of the container 1 is pivotally supported on a bottom plate 4 so as to be able to rise and fall. Opening door 3 on the bottom plate 4
The structure for pivoting will be described below based on the specific structure shown in FIGS. 1 and 3 to 7.

That is, the bottom plate 4 is provided with one or a plurality of pairs of bearing projections 6 facing the ends of the upper surface of the bottom plate 4 with a gap 5 therebetween. Support shafts 7 are provided on the opposing surfaces of the pair of bearing projections 6, respectively. Support shaft 7
One of the support shafts 7 is a guide inclined surface 7a that is inclined so that the upper part thereof is located outward. A detachment preventing projection 8 is provided at a substantially central portion of the upper surface of the bottom plate 4 between the pair of bearing projections 6. At the lower end of the opening / closing door 3, a pair of legs 11 facing each other through a gap 9 are provided in a protruding manner. Here, at least one leg 11 is an elastically deformable elastic leg 11a, and a bearing hole 13 is formed on the outer surface of this elastic leg 11a. Further, a cutout bearing hole 12 is formed in the outer surface of the other leg 11 so that a part of the outer peripheral portion is cut into a size such that the support shaft 7 can be inserted therethrough. The notch direction of the notch portion 12a of the notch bearing hole 12 is set so as to face downward when the opening / closing door 3 is in a sideways posture substantially parallel to the bottom plate 4. Here, the distance from the center of the bearing hole 13 and the notch bearing hole 12 to the tip of the leg 11 is the bearing hole 1 when the opening / closing door 3 is substantially parallel to the bottom plate 4.
3 and the distance from the center of the notch bearing hole 12 to the side edge below the leg portion 11, and as described later, bearings having the notch bearing hole 12 and the bearing hole 13 as a pair, respectively. When the opening / closing door 3 is erected with respect to the bottom plate 4 in a state in which it is rotatably supported by the support shaft 7 provided on the opposite surface of the protrusion 6, the tip of the leg 11 is located above the upper end of the separation preventing protrusion 8. Is also located below, and the separation preventing projection 8 is set between the two legs 11. Further, when the opening / closing door 3 is substantially parallel to the bottom plate 4, the distance from the center of the bearing hole 13 and the notch bearing hole 12 to the side edge below the leg portion 11 is
It is shorter than the distance from the center of the support shaft 7 to the upper end of the separation preventing projection 8.

As shown in FIG. 5, the cutout portion 12a of the cutout shaft bearing hole 12 is fitted into one of the support shafts 7 while the opening / closing door 3 is laid horizontally so as to be horizontal with respect to the bottom plate 4. At the same time, the elastic leg portion 11a having the other elasticity is elastically deformed and the bearing hole 13 is fitted into the other support shaft 7 to pivotally support the opening / closing door 3 on the bottom plate 4. Then, as shown in FIG. 2, the opening / closing door 3 is detachably locked by the locking means 15 to the support wall 16 forming a part of the side wall 2 in a standing state. When the opening / closing door 3 is in the upright state, the detachment preventing projection 8 is located between the lower ends of the legs 11, and as a result, an external force acts on the legs 11 to cause the legs to move as shown by the imaginary line in FIG. Even if the portion 11 is elastically deformed inward, it does not come off the bearing hole 13 from the support shaft 7 by hitting the separation preventing projection 8. The lock means 15 can be removed and the open / close door 3 can be pivoted outward to open as shown in FIG. 3. In this state, the storage of goods into / from the container can be opened and closed through the open / close door 3. Is what you can do. In addition, in the above-described embodiment, both the leg portions 11 may be elastically deformable elastic leg portions 11a.

In the embodiment shown in the accompanying drawings,
As shown in FIG. 1, a leg fitting portion 22 is provided at an end of the upper surface of the bottom plate 4, and a shaft 23 is provided on a side surface of the main leg fitting portion 22.
And a leg 24 is protruded from the lower end portion of the opening / closing door 3, and the outer surface of the leg 24 has a size such that a part of the outer peripheral portion thereof can pass through the shaft 23, as shown in FIG. A notched notch bearing hole portion 25 is formed, and the notch direction of the notch portion 25a of the notched bearing hole portion 25 is set to face downward in a state where the opening / closing door 3 is substantially parallel to the bottom plate 4, At the same time when the opening / closing lid 3 is mounted as described above, the leg 24 is fitted into the leg fitting portion 22 and the shaft 23 is fitted into the notch bearing hole 25 from the notch 25a.

In the embodiment shown in the accompanying drawings, the opening / closing door 3 is constituted by a lower door 3a and an upper door 3b rotatably supported by an upper end portion of the lower door 3a by a pivot 20. When opening 3, the upper door 3b is rotated outward with respect to the lower door 3a as shown in FIG. Of course, the opening / closing door 3 may be configured by a single door.

In the embodiment shown in the accompanying drawings, an example of a pallet container is shown as a container, and a fork insertion port 17 is formed in the bottom plate 4. In the pallet container shown in FIGS. 2 and 3, the support wall 16 is also rotatably attached to the bottom plate 4 by the shaft supporting portion 18, and the left and right side wall portions 19 are also attached to the left and right lower walls 20 of the bottom plate 4. And the rear side wall 21 is also rotatably supported with respect to the bottom plate, and the opening / closing door 3, the support wall 16, and the left and right side wall portions 19 that constitute the side wall 2 are supported by these. By rotating the rear side wall 21, the whole can be folded compactly.
Of course, in the present invention, it is not limited to the pallet container as described above, a folding container equipped with another openable and closable door, or the side wall cannot be folded.
It may be a container in which only the open / close door 3 can be opened and closed.

[0012]

As described above, according to the present invention, at least one of the leg portions is an elastically deformable elastic leg portion, and a bearing hole is formed on the outer surface of the elastic leg portion, and the other leg portion is formed. A state in which a cutout bearing hole is formed in the outer surface so that a part of the outer peripheral portion can be inserted into the spindle, and the cutout direction of the cutout portion of the cutout bearing hole is substantially parallel to the bottom plate. Since it is set so as to face downward, the notch of the notch bearing hole fits into one of the support shafts, and at the same time has elasticity of the other, with the opening / closing door laid sideways so as to be substantially parallel to the bottom plate. By elastically deforming the elastic legs and fitting the bearing holes in the other support shaft, the opening / closing door can be pivotally supported on the bottom plate easily. Despite being able to support, bearing hole and notch bearing hole The distance to the tip of the leg portion from the center,
If the opening / closing door is approximately parallel to the bottom plate, it is longer than the distance from the center of the bearing hole and the notch bearing hole to the side edge below the leg, and the notch bearing hole and the bearing hole form a pair of bearing protrusions. The legs are rotatably supported by a support shaft provided on the facing surface of the section, and the tips of the legs are positioned below the upper ends of the detachment prevention protrusions with the opening / closing door standing upright with respect to the bottom plate. Since the separation prevention protrusion is located between the parts, the separation prevention protrusion is located between the lower ends of the legs when the door is upright, and as a result, external force is applied to the legs. Even if the leg portion is elastically deformed inwardly due to the action, the bearing hole is not disengaged from the support shaft by hitting the separation preventing projection, and the pivotally supported state is reliably maintained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of essential parts of the present invention.

FIG. 2 is an overall perspective view of the above.

FIG. 3 is an overall perspective view showing a state in which the opening / closing door is opened.

FIG. 4 is a front cross-sectional view showing a standing state of the above-mentioned opening / closing door.

FIG. 5 is a front cross-sectional view showing a state immediately before mounting with the opening / closing door lying sideways.

FIG. 6 is a view showing the leg portion of the same, where (a) is a rear view, (b) is a top view, and (c) is a right side view;
(D) is a left side view.

FIG. 7 is a view showing the leg portion of the same, in which (a) is a perspective view and (b) is a perspective view seen from another direction.

FIG. 8 is a perspective view of a leg portion of the same opening / closing door.

FIG. 9 is a front view for explaining the problems of the conventional example.

[Explanation of symbols]

 1 Container 2 Side Wall 3 Opening / Closing Door 4 Bottom Plate 5 Gap 6 Bearing Projection 7 Support Shaft 8 Detachment Prevention Projection 9 Gap 11 Leg 11a Elastic Leg 12 Notch Bearing Hole 12a Notch 13 Bearing Hole

Claims (1)

[Claims] 1. A container comprising at least a part of a side wall of a container in which a lower end of an opening / closing door is pivotally supported by a bottom plate so that the bottom plate can be tilted up and down. Then, a support shaft is projected on the facing surface of the pair of bearing projections, and a separation prevention projection is projected on the center of the top surface of the bottom plate between the paired bearing projections. A pair of legs that face each other with a gap are provided to protrude from the lower end, and at least one of the legs is an elastically deformable elastic leg, and a bearing hole is formed on the outer surface of the elastic leg. A cutout bearing hole is formed in the outer surface of the leg part, the cutout part having a size that allows the support shaft to be inserted, and the cutout direction of the cutout part of the cutout bearing hole is set so that the opening / closing door is substantially parallel to the bottom plate. Set downward so that the distance from the center of the bearing hole and notch bearing hole to the tip of the leg is open. When the door is approximately parallel to the bottom plate, the distance from the center of the bearing hole and the notch bearing hole to the side edge below the leg is longer than that of the bearing plate, and the notch bearing hole and the bearing hole form a pair of bearing protrusions. Rotatably supported on a support shaft provided on the opposite surface of the leg, and the tip of the leg is positioned below the upper end of the detachment prevention protrusion with the opening / closing door standing upright with respect to the bottom plate. A pivot support structure for an opening / closing door of a container, characterized in that a protrusion for preventing separation is set between them.