JP4892629B1 - Door body opening / closing shift mechanism and freight vehicle using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To develop a new opening / closing shift mechanism in which a side panel of a cargo vehicle loading platform can be opened at about 180 degrees independently of the upper panel independently, and a freight vehicle using the same.
In the present invention, the door body 80 has a passive point 85 to which an extension operation from a shift actuator 81 is input at a position near the rotation fulcrum 84 and shifted to the inside of the door body and the free end side. On the other hand, the actuator is provided on the support member so as to be substantially orthogonal to the closing reference line V1 of the door body 80, and an eccentric pushing piece 82 is fixed to the working end side of the actuator rod 81b. The pushing action end is pivotably connected to the door body 80 at the passive point 85. When the door body 80 is opened, the passive point 85 is centered on the rotation fulcrum 84 of the door body 80 by the extension operation of the actuator. It is characterized in that the door body 80 is fully opened by turning so as to go around about a semicircle.
[Selection] Figure 3

Description

  The present invention relates to a container-type cargo bed (room) mounted on (equipped with) a freight vehicle such as a truck, and for example, a side panel of a cargo bed alone (without being associated with an upper panel). The present invention relates to a novel opening / closing shift mechanism that can be opened and a freight vehicle equipped with the same.

  In a freight vehicle (truck) mounted with a container type loading platform, during the loading operation, for example, as shown in FIG. 7 (a), the side panel 7 '(upper hatch 71') of the loading platform 1 'is mounted. There is one that is opened almost horizontally so that cargo can be loaded and unloaded from the side of the loading platform (this is a 90-degree opening type). In such a 90-degree open type freight vehicle 輛 T ', the opened side panel 7' (upper hatch 71 ') becomes a heel (rain-preventing) so that it can be easily loaded even in rainy weather. Since the part is greatly opened, the load handling work can be easily performed. However, when a cargo handling work using a forklift is performed on a 90-degree open type freight vehicle T ′, when the fork is raised, the uppermost end of the mast is opened by the side panel 7 ′ (upper hatch) opened 90 degrees. 71 '), which makes it difficult to carry out cargo handling work using a forklift. Of course, if the cargo handling worker (usually the truck driver also handles the cargo handling) was concerned about such contact, he could not concentrate on the cargo handling work, even if the contact itself was avoided by his attention (consciousness). Even if it is possible, naturally, the efficiency of the cargo handling work may be significantly reduced.

For this reason, as shown in FIG. 7B, for example, the side panel 7 ′ (upper hatch 71 ′) of the cargo bed 1 ′ and a part of the ceiling panel 2 ′ are integrally formed in a wing shape, A so-called wing-type freight vehicle T 'that allows the left and right wings to be flipped up at the same time or separately has been developed and put to practical use (see, for example, Patent Document 1).
In such a wing type freight vehicle T ', the side panel 7' (upper hatch 71 ') is integrally formed in a state of being orthogonal to the ceiling panel 2' by 90 degrees. Even if it is rotated (opened) at an angle of 90 degrees, the side panel 7 '(upper hatch 71') is flipped up to a higher position than the 90 degree opened type in FIG. The situation where the uppermost end of the mast comes into contact with the used cargo handling work can be avoided.

  However, in such a wing-type freight vehicle T ′, the left and right wing pivots 84 ′ are naturally provided at the central part (left and right sides) of the ceiling panel 2 ′ in the loading platform 1 ′ due to the opening / closing structure. Since it is provided, this has led to a situation in which cargo handling work from the upper part of the loading platform is restricted. That is, the left and right wing pivot fulcrums 84 'are present at substantially the center of the loading platform 1', so the upper portion of the loading platform cannot be fully opened. For example, a large heavy object such as a piano or a large power supply facility can be opened. The cargo handling work form of loading and unloading from above was not possible.

JP 2009-208526 A

  The present invention has been made in view of such a background. For example, the side panel (upper hatch) of the cargo bed can be fully opened independently regardless of the upper panel. A new opening / closing shift mechanism that can perform various cargo handling operations according to various loads extremely efficiently by allowing the ceiling panel and the rear door to be fully opened independently, and a freight vehicle using the same. Is an attempt to develop.

First, the opening / closing shift mechanism of the door body is as follows.
A door body hinged at a pivotal fulcrum to an appropriate support member;
With a shift actuator responsible for the opening and closing shift of this door body,
An opening / closing shift mechanism that opens the door body by approximately 180 degrees from the closed posture by the extension operation of the shift actuator,
The door body has a passive point to which an extension operation from the shift actuator is input at a position near the rotation fulcrum and shifted to the inside and free end side of the door body,
On the other hand, the shift actuator is provided so as to be rotatable with respect to the support member so as to be substantially orthogonal to the closing reference line of the door body, and an eccentric pushing piece is fixed to the working end side of the actuator rod. The pushing action end is pivotally connected to the door body at the passive point,
When opening the door body, by rotating the shift actuator, the passive point is rotated around the rotation fulcrum of the door body about a semicircle so that the door body is opened approximately 180 degrees. It is characterized by that.

Further, the door opening and closing shift mechanism according to claim 2 is in addition to the requirements of claim 1,
The door body is a side panel in the loading platform of the freight vehicle;
The side panel is opened in a state where it is flipped upward by approximately 180 degrees by the extension operation of the shift actuator.

Further, the door opening and closing shift mechanism according to claim 3 is in addition to the requirements of claim 2,
The shift actuator is provided on each of the front beam and the rear beam that form the upper part of the frame before and after the loading platform. In the initial posture with the door closed, the shift actuator is rotated with the pushing end side of the shift actuator facing slightly downward relative to the horizontal line. It is characterized by being movably attached.

In addition, the door opening and closing shift mechanism according to claim 4 is in addition to the requirement according to claim 2 or 3,
The freight vehicle has a structure in which either one or both of a ceiling panel and a rear door of the cargo bed are opened independently.

The freight vehicle according to claim 5 is:
A freight vehicle equipped with a container-type loading platform,
This cargo bed is provided with a side panel or a rear door that can be freely opened and closed, and the side panel or the rear door is opened and closed by expansion and contraction of a shift actuator. The opening / closing shift mechanism described in 2, 3 or 4 is used for opening and closing.

The above-described problems can be solved by using the configuration of the invention described in each of the claims.
First, according to the first or fifth aspect of the present invention, an eccentric pushing piece is provided on the pushing action end side of the shift actuator, and the door body is opened by pressing the door body through the eccentric pushing piece. With this, it can be opened largely by about 180 degrees. In other words, the wing type is known as a method that can open the loading platform of a large freight vehicle, but the wing type is a method of opening and closing a wing-shaped door body that integrates a side panel and a ceiling panel. The opening / closing shift mechanism of the present invention is different from the above, and can open the side panel of the cargo bed, for example, largely without the ceiling panel.
In addition, since the eccentric push-in piece is provided between the shift actuator and the door body, the swing width generated in the shift actuator when the door body is opened and closed can be kept extremely small (for example, while realizing a large opening of the door body). About 8 degrees).

  Further, according to the invention described in claim 2 or 5, since the side panel of the loading platform can be opened upward by approximately 180 degrees during the cargo handling work in the freight vehicle, the cargo handling work using the forklift is extremely efficient. Yes. In other words, if the side panel of the loading platform is opened almost 180 degrees upward, even if the fork of the forklift is raised to the highest position, the post of the forklift does not hit the side panel of the freight vehicle so that cargo handling work can be performed smoothly. Is.

According to the third or fifth aspect of the present invention, the shift actuator is provided on the front beam and the rear beam in a slightly downward posture, and the swing width generated in the shift actuator when the side panel is opened and closed is small. Therefore, even if the side panel is opened wide, the shift actuator can be accommodated in the beam (within the width of the beam). Therefore, the shift actuator that normally protrudes to the outside when the side panel is opened can be hardly exposed to the outside, making it inconspicuous. The risk of work obstruction can be eliminated.
A structure in which the shift actuator is always contained (hidden) in the frame (beam) is considered to be highly effective in crime prevention. In other words, if the actuator that closes the panel or door is visible from the outside, or if the key that is hung on the closed door is visible from the outside, for example, the cargo bed or container is destroyed, Although it may induce a crime (criminal psychology) to rob a baggage stored / contained in a container, in the present invention, the shift actuator closing the side panel (door body) is not only closed but also opened. Even if there is, it can hardly be seen from the outside, so such crimes can be prevented.

  According to the invention described in claim 4 or 5, in addition to the structure in which the side panel of the loading platform can be opened to a state where it is flipped up almost 180 degrees, the ceiling panel and the rear door can be opened independently, so that various loading can be achieved. Various cargo handling operations according to the object can be performed efficiently. In other words, when loading a heavy load such as a piano or large power supply equipment on the loading platform, the ceiling panel can be opened independently and loaded from the top of the loading platform (can be taken in and out), and the load loaded on the pallet can be When loading onto a cargo bed using a pallet, it is possible to adopt a cargo handling form in which the side panel is opened approximately 180 degrees and loaded from the side of the cargo bed, and the cargo handling work can be performed from anywhere on the freight vehicle.

The perspective view (a) which shows the freight vehicle which opened the side panel (upper hatch) of the cargo compartment independently independently by the opening and closing shift mechanism of the door body of the present invention, and partially enlarged the opening and closing shift mechanism. It is a perspective view (b) shown. It is a stepwise perspective view which shows typically signs that a side panel (upper hatch) of a luggage compartment is opened by a door body opening and closing shift mechanism of the present invention. It is sectional drawing which looked at the mode of opening from the front side of the vehicle same as the above. It is explanatory drawing which looked at the mode of the cargo handling work by a forklift in the state which opened the side part panel (upper hatch) of the luggage compartment from the whole surface from the back side of the vehicle. It is a perspective view which shows a mode (other Example) which connected the integrally rotating piece which rotates integrally with a door body (side panel) with respect to a door body (side panel). It is a perspective view which shows a mode (other Example) which was made to open the rear door of the double door of a freight vehicle by the opening / closing shift mechanism of the door body of this invention. Two types of conventional freight vehicles (90 degree open type (a) that opens the side panel (upper hatch) almost horizontally and wing type that opens the side panel (upper hatch) integrally with the upper panel) It is explanatory drawing which shows (b)).

The mode for carrying out the present invention includes one described in the following embodiments, and further includes various methods that can be improved within the technical idea.
In the description, first, the freight vehicle T mounted (equipped) with the container type loading platform 1 will be described, and then the opening / closing shift mechanism 8 of the present invention will be described.

The door opening and closing shift mechanism 8 of the present invention is applied to a freight vehicle T such as a truck as shown in FIG. 1, for example, and this includes a cabin C including a driver's seat in the front, and thereafter A panel van-shaped carrier 1 is provided on the side.
The loading platform 1 is composed of a ceiling panel 2 on its upper surface and a floor 3 provided opposite to the ceiling 1 and a peripheral wall panel 4 rising from the floor 3 to form a sealed cargo room S inside. is there. Of these, the peripheral wall panel 4 is substantially constituted by a rear door 5, a front fixing panel 6, and a side panel 7.

More specifically, these members are configured using the frame 10 as a skeleton member, and the floor surface 3 includes a floor frame frame 11 having a rectangular shape in plan view at an outer peripheral position thereof. The floor frame 11 further includes a frame member such as a cross-shaped structure having a necessary strength at an inner portion thereof (not shown).
Then, four pillar frames 12 are erected from the four corners of the floor frame 11, a rear beam 13 is provided on the rear side of the upper end, a front beam 14 is provided on the front side opposite to the rear beam 13, and Side beams 15 are provided on both sides connecting them.

  Here, in the present embodiment, the side panel 7 is largely opened to the flip-up state by the opening / closing shift mechanism 8 (that is, the door panel 80 to be opened / closed becomes the side panel 7). In order to efficiently perform various cargo handling operations according to the object, it is preferable that the ceiling panel 2 can be opened largely independently. Therefore, in the present embodiment, the ceiling panel 2 is configured to be able to be folded as a whole, This is brought close to one of the side beams 15 to open the entire ceiling surface. As for such an independent full opening of the ceiling panel 2, Japanese Patent No. 4478725 “Freight vehicle cargo bed structure”, utility model registration No. 3149126 “Freight vehicle”, Japanese Patent Application No. 2009-179779 by the present applicant. It is preferable to apply the “freight container” method.

Next, the rear door 5, the front fixing panel 6, and the side panel 7 constituting the peripheral wall panel 4 will be described.
First, as shown in FIGS. 1 and 4 as an example, the rear door 5 is formed in a double-spread shape, and is opened and closed by hinges 51 provided on the pillar frames 12 on the two rear sides. The rear door 5 is maintained and locked in a closed state by a latch mechanism 52 according to a conventional method.
On the other hand, the front fixing panel 6 is normally provided in a fixed state, but it is needless to say that a part of the panel can be opened.

Further, as shown in FIGS. 1 and 4, for example, the side panel 7 is formed so that an upper hatch 71 and a lower ridge 72 are opened and closed separately, and the upper hatch 71 is an upper side. The beam 15 is used as a support member, and a structure is used in which the beam 15 is lifted upward from below by a hinge 73, and a rotation support shaft at that time is a rotation support point 74.
Further, the lower lip 72 is rotatably supported with respect to both the left and right side portions of the floor surface 3 and has a structure that is opened downward from above. In addition, when the longitudinal dimension of the loading platform 1 is long, in consideration of the operability of the lower pawl 72, it is preferable that the lower pawl 72 is divided into two parts in the front and rear directions so that they can be opened and closed separately.

Next, the opening / closing shift mechanism 8 of the present invention for opening and closing the side panel 7 (upper hatch 71) of the loading platform 1 will be described.
The opening / closing shift mechanism 8 includes a door body 80 (in this case, an upper hatch 71) supported so as to be freely opened and closed, a shift actuator 81 that opens and closes the door body 80 by an extension / contraction operation of a slider, and a pushing tip of the shift actuator 81 In this embodiment, in particular, the door body 80 is attached with an integrally rotating piece 80a that rotates together with the eccentric pushing piece 82 in a fixed state. It pushes in with the pushing piece 82, and the door body 80 is open | released.
Further, in this embodiment, as described above, the side panel 7 (upper hatch 71) as the door body 80 of the loading platform 1 is independently opened and closed in the flipped-up state. Here, “independently” as described above means a non-wing type that can be opened and closed independently without other parts such as the ceiling panel 2. The side panel 7 (upper hatch 71) can be opened almost entirely (for example, about 170 degrees open), which is one of the major features of the present invention (so-called full high open hatch). For this reason, the initial closed state of the side panel 7 as the door body 80 is a substantially vertical (vertical) state, which is defined as a closing reference line V1 (see FIG. 3A).

Hereinafter, each component of the opening / closing shift mechanism 8 will be described. First, the door body 80 and the integral rotation piece 80a will be described.
Here, since the side panel 7 (upper hatch 71) of the loading platform 1 is opened and closed by the opening / closing shift mechanism 8, the upper hatch 71 particularly corresponds to the door body 80 among the side panels 7. The integral turning piece 80a has a substantially triangular shape, and is provided in a fixed state near the turning fulcrum 84 of the door body 80 (upper hatch 71). Here, the rotation fulcrum 84 of the door body 80 corresponds to the rotation fulcrum 74 in the case of the upper hatch 71 (similar to the case where the door body 80 corresponds to the upper hatch 71). In the present embodiment, the integral rotating piece 80a is regarded (considered) as a constituent part of the door body 80.

Here, the point at which the expansion / contraction operation / pressing operation is input from the shift actuator 81 in the integral rotating piece 80a is a passive point 85, which is the shift actuator 81 side (strictly, an eccentric pushing piece 82 described later). ) For free rotation.
As shown in FIG. 3A, the passive point 85 is inside the door body 80 (loading room S side) as shown in FIG. 3A, and the free end of the door body 80 (the upper hatch 71 is free to rotate). End) side, that is, near the rotation fulcrum 74 (84) on the cargo compartment S side, at a position lower than this. Here, the difference in height is provided between the rotation fulcrum 74 (84) and the passive point 85 (the passive point 85 is shifted to the low position). This is to smoothly rotate around the moving fulcrum 74 (84), in other words, to smoothly rotate the integral rotating piece 80a.

Next, the shift actuator 81 will be described. The shift actuator 81 opens and closes the door body 80 (upper hatch 71), and includes an actuator rod 81b as a slider on the actuator body 81a. 80a is rotated and the door body 80 is opened and closed. In the present embodiment, the shift actuator 81 has the end of the actuator body 81a rotatably attached to the frame 10, which secures the basic rigidity of the loading platform 1, in particular, the rear beam 13 and the front beam 14. Is the actuator free base point 86. In addition, the shift actuator 81 (initial state) is provided in a substantially orthogonal state with respect to the closing reference line V1 of the door body 80 (upper hatch 71). The center line of the shift actuator 81 at this time is defined as the initial posture line H1. Incidentally, the initial posture line H1 of the shift actuator 81 is set to be slightly downward. Similarly to the height difference between the rotation fulcrum 74 (84) and the passive point 85, the integral rotation piece 80a is connected to the rotation fulcrum 74 (84). This is for smoothly and reliably rotating around.
The shift actuator 81 can be a shift cylinder such as a hydraulic cylinder or an electric cylinder, and can also be a rack and pinion type actuator or a crank type actuator.

  Next, the eccentric pushing piece 82 will be described. The eccentric pushing piece 82 is fixed to the pushing action end side of the actuator rod 81b. When the door body 80 (upper hatch 71) is opened, that is, the integral turning piece 80a is turned to the turning fulcrum 74 (84). When turning around, the passive point 85 is formed in a curved shape as viewed from the front side of the vehicle so as to go around the turning fulcrum 74 (84) (here, detouring from the lower side to the upper side). Is. Of course, the eccentric pushing piece 82 and the integral turning piece 80a (the door body 80) are pivotably connected in advance (in a link) at the passive point 85 as described above so that such an operation can be performed. Is.

Hereinafter, the specific structure of the integrally rotating piece 80a and the eccentric pushing piece 82 will be described in more detail.
For example, as shown in FIG. 2, the integrally rotating piece 80 a is formed by two substantially triangular metal plate members provided to face each other at a predetermined interval (in other words, three-dimensionally), and is eccentrically pushed. The piece 82 is also three-dimensionally formed so as to sandwich such an integrally rotating piece 80a. Note that such a three-dimensional structure is a structure for mainly maintaining the strength as the opening / closing shift mechanism 8 and acquiring the rigidity as the movable member.
In the embodiment shown in FIG. 3, the eccentric pushing piece 82 is formed in a curved shape when viewed from the front side of the vehicle. However, the eccentric pushing piece 82 can be formed in an L shape (bent shape). is there. However, if the eccentric pushing piece 82 is formed in an L shape, stress concentration may occur in the bent portion. Therefore, when the door body 80 is opened and closed, a relatively large load is not applied to the eccentric pushing piece 82 and the shift actuator 81. It is considered suitable for the case.

The opening / closing shift mechanism 8 of the present invention has the basic structure as described above, and hereinafter, an opening mode of the door body 80 (upper hatch 71) by this mechanism will be described.
The initial state in which the side panel 7 (upper hatch 71) as the door body 80 is closed is, for example, as shown in FIGS. 2 (a) and 3 (a), the actuator rod 81b (slider) of the shift actuator 81. In this state, the actuator rod 81b is gradually extended to open the door body 80 (upper hatch 71).
Specifically, when the actuator rod 81b is extended, as shown in FIGS. 2 and 3, the integral turning piece 80a pushed through the eccentric pushing piece 82 rotates around the turning fulcrum 74 (84). Move. That is, the integral rotation piece 80a rotates so that the passive point 85 connected to the eccentric pushing piece 82 turns around the rotation fulcrum 74 (84) from the lower side to the upper side. Of course, along with the extension operation of the actuator rod 81b, the entire shift actuator 81 is gradually moved downward on the pushing end side with the actuator free base point 86 as the rotation base point, as shown in FIGS. 3 (a) to 3 (b). (Outside the rotation fulcrum 74 (84)) (the tip is swung downward).
And by such an operation | movement, the upper hatch 71 as the door body 80 opens gradually.

Here, for example, FIG. 3C shows a state in which the passive point 85 has almost reached the lowest position. At this time, the shift actuator 81 is also tilted downward (push-in) with the actuator free base point 86 as the rotation base point. The center line of the shift actuator 81 at this time is the maximum tilt line H2. In FIG. 3C, the door body 80 is in a state of being opened approximately 90 degrees in this state.
FIG. 3D shows a state in which the actuator rod 81b is further extended from the above state, and the door body 80 (upper hatch 71) is fully opened. 3C to FIG. 3D, this time, the integral rotary piece 80a is rotated so that the passive point 85 rises from the lowest position. The swing angle (tilt angle) gradually decreases, and in FIG. 3D, it approaches the horizontal line rather than the initial posture line H1 (this is defined as the final posture line H3).
FIG. 3D shows a state in which the passive point 85 is rotated about a semicircle of about 180 degrees around the rotation fulcrum 74 (84) (substantially about 170 degrees). The (upper hatch 71) is also in an inverted state opened almost 180 degrees (in other words, a full high open hatch).

In the present invention, the main feature is that the door body 80 (upper hatch 71) can be opened largely and independently, but the total deflection width (tilt angle) of the shift actuator 81 for opening the door body 80 is extremely small. The feature of the present invention is that it is suppressed, that is, the angle difference between the final posture line H3 (not the initial posture line H1) and the maximum tilt line H2 is small (about 8 degrees as an example). As a result, the shift actuator 81 (actuator body 81a) itself can be housed in the frame 10 having sufficient strength, and components such as the shift actuator 81 are almost out of the cargo compartment S when the door body 80 is opened and closed. It is not necessary to expose it.
Of course, the integrally rotating piece 80a, the eccentric pushing piece 82 and the like are somewhat exposed to the outside of the cargo space S. However, as in the conventional method shown in FIG. 7, the door body 80 'that can be directly opened and closed by the shift actuator 81' is provided. The degree of exposure of the constituent members can be suppressed to a much lower level than in the case of pushing up. In addition to the good fit of the members, this is not only the appearance, but also the stability of opening and closing operation of the door body 80 (elimination of foreign matter sticking and biting to the shift actuator 81), improvement in workability of cargo handling work (improvement of efficiency), etc. This is effective.
7 is a mechanism for pushing up or supporting a part of the door body 80 ′ away from the rotation fulcrum 84 ′ to open the door body 80 ′. However, unlike this conventional method, the mechanism pushes near the pivot point 74 (84) to open the door body 80, which is also a major feature (difference). The mechanism itself that opens the door 80 in spite of such a structure can be said to be a very new and innovative idea.

Further, since the door body 80 (upper hatch 71) can be opened widely, as shown in FIG. The cargo handling work can be performed efficiently without contact with the vehicle.
In addition, as described above, if the ceiling panel 2 and the rear door 5 are structured to be able to be opened largely independently, all the wall surfaces (door bodies 80) except the front fixing panel 6 of the loading platform 1 are opened widely ( (Full open), and it becomes easier to perform various cargo handling operations according to various loads. That is, when loading a heavy load such as a piano or a large power supply facility on the loading platform 1, the ceiling panel 2 can be fully opened and loaded from the top of the loading platform 1 (can be taken in and out), and the load loaded on the pallet can be loaded. When loading on the loading platform 1 using the forklift F, a loading form in which the side panel 7 (upper hatch 71) is opened approximately 180 degrees and loading from the side of the loading platform 1 can be adopted.

[Other Examples]
The present invention has the above-described embodiment as one basic technical idea, but the following modifications can be considered.
First, in the above-described embodiment, the integrally rotating piece 80a is basically fixedly attached to the side panel 7 (upper hatch 71) as the door body 80. It is not limited. That is, in the embodiment shown in FIG. 5, the door body 80 (upper hatch 71) is first rotatably supported by the hinge 73 (rotation fulcrum 74) with respect to the rear beam 13 (frame 10). The pivot fulcrum 74 (84) also penetrates the integral pivot piece 80a, and therefore the integral pivot piece 80a is also pivotably connected to the rear beam 13 (the same as the basic embodiment so far). .

  5 is not completely fixed to the door body 80 (upper hatch 71), but instead of the pivot point 74 (84) and the passive point 85 (points). ), And further connected so as to be freely rotatable. Since the connection point 87 itself is rotatable (link shape), the door body 80 and the integral rotation piece 80a are pivotally connected, but the integral rotation piece 80a is the door body 80. In order to share the rotation fulcrum 74 (84) with the upper hatch 71 (because the rotation fulcrum 74 coincides), also at the rotation fulcrum 74 (via the hinge 73) with the door body 80 (upper hatch 71). It is connected so that it can rotate freely. That is, the integral rotating piece 80a is connected to the door body 80 (upper hatch 71) so as to be rotatable at two points, that is, the rotation fulcrum 74 (84) and the connection point 87. Therefore, the integrally rotating piece 80a moves integrally with the door body 80 (upper hatch 71), and the integrated rotating piece 80a is mechanically moved from the door body 80 (upper hatch 71). When completely fixed to (the basic embodiment), the same state is obtained.

However, in reality, when the door body 80 (upper hatch 71) is opened and closed, the two-piece connecting piece 80a is connected at two points rather than completely fixing the integrated turning piece 80a to the door body 80 (upper hatch 71). It has been confirmed by the present applicant that the opening and closing operation of the door body 80 (upper hatch 71) can be performed smoothly and reliably in the form.
When the integral turning piece 80a is connected to the door body 80 (upper hatch 71) in a two-point connection form, the turning fulcrum 74 (84), the passive point 85, and the connecting point 87 in the integral turning piece 80a. Is configured to be approximately the apex of a triangle (see FIG. 5), but the portion between the pivot fulcrum 74 and the connection point 87 (the part that hits the side in the case of a triangle) is somewhat recessed inside the triangle. It is preferable for the door body 80 (upper hatch 71) to be opened and closed more smoothly.

Moreover, although the case where the side panel 7 (upper hatch 71) of the loading platform 1 is opened is shown in the basic embodiment described above, the door body 80 does not necessarily need to be the side panel 7 (upper hatch 71). For example, as shown in FIG. 6, the rear door 5 may be used, and this can be opened and closed by the opening / closing shift mechanism 8 of the present invention. Normally, the rear door 5 of the loading platform 1 in the freight vehicle T has many left-right opening (opening and closing) types with double doors. In this case, the rear door 5 as the door body 80 is flipped up like a hatchback and opened. Rather than doing it, it is generally considered to open (open and close) in a horizontal turning state. Incidentally, in the embodiment of FIG. 6, the opening / closing shift mechanism 8 is shown as being provided on each of the left and right upper side beams 15, but the position where the opening / closing shift mechanism 8 is provided is lower (for example, left and right of the floor surface 3). It may be installed on both edges. Further, when the rear door 5 is opened and closed horizontally as in the embodiment shown in FIG. 6, a very large load is applied to the members constituting the opening / closing shift mechanism 8, such as the shift actuator 81 and the eccentric pushing piece 82. Since the rear door 5 is mainly supported by the hinge 51, a small actuator having a small pushing force can be applied as the shift actuator 81, and the flat pushing member can be used as the eccentric pushing piece 82 and the integral rotating piece 80a. It is possible to form with.
Incidentally, when the rear door 5 is opened and closed in a horizontal turning state, the shift actuator 81 is provided in an initial posture in a state where the pushing tip end side is inclined slightly inward of the luggage compartment S, and the passive point 85 is also rotated. It is set at a position slightly inward of the luggage compartment S from the moving fulcrum 74 (FIG. 3 can be considered as a plan view viewed from above the vehicle).
The opening / closing shift mechanism 8 of the present invention can also be applied to a flip-up type kick door (upper door) at the rear of the loading platform such as a panel truck.

  In the embodiment described above, the opening / closing shift mechanism 8 is basically applied to the loading platform 1 of the cargo vehicle T. However, the opening / closing shifting mechanism 8 of the present invention is limited to the loading platform 1 of the cargo vehicle T. It can be applied to cargo containers. This freight container is loaded on a freight vehicle T such as a trailer or tractor type, and is loaded on a rail freight vehicle for ground transportation, as well as for marine and air transportation by ship or aircraft. It is. When the opening / closing shift mechanism 8 is applied to a cargo container, a groove (fork slot) for inserting a fork is formed on the side surface of the floor frame 11 of the cargo container so that a cargo handling operation by a forklift F or the like is performed. It is common to make it easy to do. In general, grip guides are formed near the ends of the front beam 14 and the rear beam 13 (four corners of the ceiling panel 2) so as to be easily gripped by a crane or the like.

Furthermore, the opening / closing shift mechanism 8 of the present invention can be applied to other than the opening / closing of the loading platform 1 and the door body 80 of the cargo container, and such application examples will be described below.
First, this mechanism can be applied to a flip-up garage door (open / close) installed in the front of the garage. Incidentally, conventionally, when this type of garage door is opened, the door waits in a substantially horizontal state above, but in this case, the waiting door sometimes protrudes to the front of the garage. However, when the garage opening / closing door is opened / closed by this mechanism, the door in the standby state is in an almost inverted posture with the door opened approximately 180 degrees, so that the protrusion of the door to the front of the garage can be eliminated.
In addition, the opening / closing shift mechanism 8 of the present invention is a very novel mechanism that can open the door body 80 approximately 180 degrees while setting the passive point 85 near the rotation fulcrum 74 (84) as described above. When such a mechanism itself is evaluated, it can also be applied to opening and closing the door body 80 such as a locker or furniture.
Further, if it is emphasized that the swinging width of the shift actuator 81 when opening and closing the door body 80 is extremely small and that components such as the shift actuator 81 can be made inconspicuous in appearance, the freight vehicle T to which the present invention is applied can be obtained. In a state where the side panel 7 is opened, it can be used as a place for performing a stage or an event on the loading platform 1 (a vehicle for a stage or a vehicle for an event is used as a vehicle).

  Further, when a backward-acting type is applied as the shift actuator 81, the door body 80 has a strong posture in various states, for example, an initial closed state, a maximum open state, and an open / closed state. Since it can hold | maintain, for example, the opening and closing of the door body 80 is stopped on the way, and the door body 80 can also be used as a bag. Further, in addition to being able to strongly maintain the door 80 in the closed state, the shift actuator 81 responsible for opening and closing is housed in the luggage compartment S or container and difficult to see from the outside. In terms of protection and storage of (load), it is desirable for crime prevention. That is, when the shift actuator 81 that closes the luggage compartment S or the container door 80 can be seen from the outside, or when the state where the closed door is locked is clearly seen from the outside, etc. May cause a crime (criminal psychology) to steal the cargo in the cargo compartment S or container, but in the present invention, the door can be firmly closed by the shift actuator 81 (return type), and Since this shift actuator 81 is hardly visible from the outside, there is an effect that such a crime can be prevented.

  The door opening / closing shift mechanism 8 of the present invention can open and close the side panel 7 of the loading platform 1 of the freight vehicle T, for example, and can greatly open and close the door 80 of the cargo container. It can also be used to open and close doors 80 such as ordinary lockers and furniture.

DESCRIPTION OF SYMBOLS 1 Loading platform 2 Ceiling panel 3 Floor surface 4 Perimeter wall panel 5 Rear door 6 Front fixing panel 7 Side panel 8 Opening and closing shift mechanism (of door body) 10 Frame

5 Rear door 51 Hinge 52 Latch mechanism

7 Side panel 71 Upper hatch 72 Lower tilt 73 Hinge 74 Rotation fulcrum

10 frame 11 floor frame 12 pillar frame 13 rear beam 14 front beam 15 side beam

8 Opening / Closing Shift Mechanism (Door Body) 80 Door Body 80a Integral Rotating Piece 81 Shift Actuator 81a Actuator Body 81b Actuator Rod 82 Eccentric Pushing Piece 84 Rotating Support Point 85 Passive Point 86 Actuator Leaving Base Point 87 Connection Point

V1 closing reference line (door)
H1 First attitude line (shift actuator)
H2 Maximum tilt line (shift actuator)
H3 Final posture line (shift actuator)
C Cabin F Forklift S Cargo T T Cargo Vehicle

Claims (5)

A door body hinged at a pivotal fulcrum to an appropriate support member;
With a shift actuator responsible for the opening and closing shift of this door body,
An opening / closing shift mechanism that opens the door body by approximately 180 degrees from the closed posture by the extension operation of the shift actuator,
The door body has a passive point to which an extension operation from the shift actuator is input at a position near the rotation fulcrum and shifted to the inside and free end side of the door body,
On the other hand, the shift actuator is provided so as to be rotatable with respect to the support member so as to be substantially orthogonal to the closing reference line of the door body, and an eccentric pushing piece is fixed to the working end side of the actuator rod. The pushing action end is pivotally connected to the door body at the passive point,
When opening the door body, by rotating the shift actuator, the passive point is rotated around the rotation fulcrum of the door body about a semicircle so that the door body is opened approximately 180 degrees. An opening / closing shift mechanism for the door body.
The door body is a side panel in the loading platform of the freight vehicle;
The door body opening / closing shift mechanism according to claim 1, wherein the side panel is opened in a state of being flipped upward by approximately 180 degrees by an extension operation of the shift actuator.
The shift actuator is provided on each of the front beam and the rear beam that form the upper part of the frame before and after the loading platform. In the initial posture with the door closed, the shift actuator is rotated with the pushing end side of the shift actuator facing slightly downward relative to the horizontal line. The door opening / closing shift mechanism according to claim 2, wherein the door opening / closing shift mechanism is movably attached.
4. The door opening / closing shift mechanism according to claim 2, wherein the freight vehicle has a structure in which either one or both of the ceiling panel and the rear door of the cargo bed are independently opened.
A freight vehicle equipped with a container-type loading platform,
This cargo bed is provided with a side panel or a rear door that can be freely opened and closed, and the side panel or the rear door is opened and closed by expansion and contraction of a shift actuator. 2. A freight vehicle characterized by being opened and closed by an opening and closing shift mechanism described in 2, 3 or 4.

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