JP3763342B2 - Open side loading platform structure - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a box-shaped cargo bed installed at the rear of a vehicle such as a truck, and relates to a structure of a side-open cargo bed provided with a side door that can be opened on a side surface thereof.
[0002]
[Prior art]
Conventionally, as a truck bed structure, it is formed in a box shape, and side doors are attached to the left and right side surfaces of the box shaped bed via hinges, respectively, so that the side can be opened in addition to opening and closing the door at the rear of the bed. There are open side types. In this loading platform, in addition to opening and closing of the rear side door, the left and right side doors can be opened and closed, so that there is an advantage that cargo handling work can be performed according to the situation of the place.
[0003]
6 is an external perspective view conceptually showing an example of a conventional side-opening type loading platform structure, FIG. 7 is an enlarged schematic cross-sectional view taken along the line CC of FIG. 6, and FIG. 8 is an enlarged view showing a structure at a portion D of FIG. FIG. 6 to 8, a box-shaped loading platform 51 installed at the rear part of the truck has a pair of rear doors 52 that are opened on the rear side, and a side door 53 and a side wall 54 on both the left and right sides. They are arranged separately in the top and bottom. Among these, the side door 53 is attached to the side surface of the loading platform 51 via a hinge 57 attached to the outside of the side rail 56 that defines the upper portion of the opening 55 (see FIG. 7) provided on the side surface of the loading platform 51. ing. The side door 53 is pivotable up and down with the hinge 57 as a fulcrum, and opens when it is pivoted upward, and closes when pivoted downward. Further, the side door 53 is rotated in the opening direction by using the gas spring 58 as a driving force, and the closing operation is performed by pulling the pulling rope 59 attached to the side door 53 by the operator. This is done by taking it down. The side door 53 indicated by a solid line in FIGS. 6 and 7 shows a state in which the opening 55 is disposed in a closed position, and the side door 53 indicated by a one-dot chain line is disposed in an open position in which the opening 55 is opened. It shows the state being done.
[0004]
6 to 8, reference numeral 60 denotes a rainproof sheet. The rainproof sheet 60 is a side rail for the purpose of preventing rainwater, dust, etc. from entering between the side rail 56 and the side door 53. It is attached so as to cover the gap between 56 and the side door 53. 7 and 8, reference numeral 61 denotes a seal rubber, which is attached to the end face of the side door 53 for the purpose of preventing rainwater and the like from entering between the side rail 56 and the side door 53. When the door 53 is closed, it is tightly sandwiched between the side rail 56 and the side door 53 and sealed.
[0005]
On the other hand, the side turn 54 is attached to the floor side of the loading platform 51 via a hinge 62. The side turn 54 can be turned up and down with the hinge 62 as a fulcrum, opens when it is turned downward, and closes when it is turned upward. 6 shows a state in which the side turn 54 indicated by a solid line is disposed at the closed position where the opening 55 is closed, and in this state, the side face 54 is substantially surfaced with respect to the side door 53 which is also disposed at the closed position. First, the closed side surface of the loading platform 51 is formed. On the other hand, the side turning 54 shown by the alternate long and short dash line shows a state where it is hung from the side surface of the loading platform 51 and is arranged at the open position where the opening 55 is opened.
[0006]
In this example, the gas springs 58 for rotating the side door 53 from the closed position toward the open position are arranged on both the left and right sides of the loading platform 51 and in the front and rear. As shown in detail in FIG. 8, the gas spring 58 in each part has one end side connected to the side rail side of the loading platform 51 through the pivot 63 so as to be pivotable in the vertical direction, and the other end side pivoted. 64 and a bracket 65 are connected to the inside of the side door 53 so as to be pivotable in the vertical direction, and the position of the pivot 64 moves on a locus indicated by an arc 65 in FIG. 8 depending on the position of the side door 53. To do. That is, when the side door 53 is in the closed position indicated by the alternate long and short dash line in FIG. 8, the pivot 64 is at the position indicated by the symbol Pc (hereinafter referred to as “closed position Pc”), and is rotated 90 degrees from the closed position Pc in the opening direction. When the side door 53 is disposed at the open position indicated by the solid line, the pivot 64 is disposed at the position Po (hereinafter referred to as “open position Po”), and is further dead at a position rotated by an angle α from the closed position Pc. A point position Pd is created. The spring force of the gas spring 58 acts in a direction to close the side door 53 until the gas spring 58 moves from the open position Pc to the dead center position Pd, and from the dead center position Pd to the open position Po. It acts in the direction of opening the door 53.
[0007]
And in the loading platform structure comprised in this way, the side door 53 is normally closed and closed and locked by the locking means which is not shown in figure. When the side door 53 is opened, first, the closing lock by the locking means is released, and then the operator lifts the lower side of the side door 53 and rotates it in the opening direction. Then, a force to lift the side door 53 is required from the closed position Pc to the dead center position Pd, but when the dead center position Pd is exceeded, the force of the gas spring 58 works as a force to rotate the side door 53 in the opening direction. The side door 53 is automatically opened to the open position Po with the help of the gas spring 58. Further, the opening position Po is stopped by a stopper arm (not shown) to limit the opening angle.
[0008]
On the other hand, when closing the side door 53, the operator pulls the pulling rope 59 hanging from the inside of the opened side door 53 with his hand and pulls it down to the open end of the side door 53. Rotate to the closed position Pc until a hand is applied. If an operator's hand gets on the open end of the side door 53, after that, the side door 53 will be directly rotated to the closed position side. In this rotation, a large force for contracting the gas spring 58 is required up to the dead center position Pd. However, when the dead center is exceeded, the force of the gas spring 58 acts as a force for rotating the side door 53 in the closing direction, and thereafter Closed to the closed position Pc. Further, when the closing lock is performed at the closing position Pc, the closing operation is completed.
[0009]
FIG. 9 is an action moment diagram showing the operating force required for the operator to close the side door 53. The vertical axis shows the moment generated around the hinge 57, and the horizontal axis shows the side door 53. The opening angle is shown. In FIG. 9, the curve indicated by the symbol Fg indicates the generated moment of the gas spring 58, the curve indicated by the symbol Fd is the moment generated by the weight of the side door 53, and the curve indicated by the symbol Fa is the combined moment (Fg−Fd). ) Is the operating force actually required by the operator. As can be seen from FIG. 9, the operating force Fa is (+) from the open position Po (open angle 90 degrees) to the dead center position Pd (α angle = about 10 degrees), and when the dead center position Pd is exceeded, the gas spring 58 Is generated in the closing direction, and the operating force Fa becomes (−).
[0010]
[Problems to be solved by the invention]
However, the structure of the conventional open side loading platform described above has the following problems.
The side door 53 is attached to the side surface of the loading platform 51 via a hinge 57 attached to the outside of the side rail 56, and the effective opening height H1 when the side door 53 is opened is limited by the side door 53. It has a structure. Therefore, as shown in FIG. 7, the effective opening height H1 in the vertical direction of the opening 55 is a height that is smaller than the height H0 by the thickness t of the side door 53 when the actual opening height is H0. That is, (H0-t). For this reason, the effective opening height H1 is small, there is a large difference (H2 + t) from the ceiling in the loading platform, and the load cannot be loaded (H2 + t) becomes a dead space. Is bad.
The structure using the gas spring 58 as a driving force is inexpensive but has a large opening / closing operation force. For this reason, when the side door 53 is closed using the pulling rope 59, it is necessary to close the side door 53 with momentum, so the closing speed of the side door 53 is fast. For this reason, improvement is desired so that it may close gently from a safety aspect.
-Since the rainproof sheet 60 is provided between the side rail 56 and the side door 53, the appearance is poor.
[0011]
The present invention has been made in view of the above-described problems, and a first object is to provide a side-opening type loading platform structure in which a large side opening of the loading platform is ensured at the time of cargo handling and the efficiency of cargo handling work can be improved. It is to provide.
[0012]
A second object of the present invention is to provide a side-opening type loading platform structure that can improve safety when closing a side door.
[0013]
A third object of the present invention is to provide a side-opening type loading platform structure having a structure capable of improving the appearance.
[0014]
A fourth object of the present invention is to provide a side door opening type loading platform structure that can close the side door with a small operating force.
[0015]
A fifth object of the present invention is to provide a side-opening type loading platform structure that can be provided at low cost at a low cost.
[0016]
Other objects of the present invention will be clarified in order in the contents described below.
[0017]
[Means for Solving the Problems]
The present invention has been made to achieve the above object, and the invention according to claim 1 of the present invention is attached to the upper part of the side surface of the cargo bed with a pivot point provided above the upper surface of the cargo bed. A hinge, and a side door that is attached to the side surface of the cargo bed so that the side opening of the cargo bed can be opened and closed via the hinge, and is rotated to a position above the side opening when opened, and When the side door is opened from the closed position to a predetermined angle, a force in the closing direction is applied to the side door, and when the side door is opened beyond the predetermined angle range, a force in the opening direction is applied to the side door. A main gas spring, and an auxiliary gas spring that applies a force in the opening direction to the side door when the side door is disposed within a range in which the force in the closing direction is applied by the main gas spring. Composition One in which the.
[0018]
According to the structure of the first aspect of the invention, the following operation is provided.
・ The side door is lifted to the upper side of the side opening when it is opened, so the side opening height is not restricted by the side door, the difference from the ceiling height in the loading platform is reduced, and the load cannot be loaded It is possible to reduce the space and increase the efficiency of cargo handling.
-Since the hinge is attached to the upper part of the side of the loading platform, the boundary between the side and the loading platform and the hinge are provided on the upper surface side, and the structure cannot be seen from the side of the loading platform, the appearance can be improved. .
-If the side door is placed within the range in which the closing force is applied from the main gas spring to the side door, the side door is pushed back in the opening direction, but the auxiliary gas spring is applied to the side door. This return force acts as a brake and closes immediately before the final position, so that safety can be improved. Also, when the side door is opened from the closed position, it can be opened with a small operating force.
-When closed beyond a predetermined angle, the auxiliary gas spring can be braked to ease the closing force of the main gas spring, so the position at the predetermined angle (dead center position) is shifted to the opening direction. Thus, the side door can be set to a predetermined position with a small operating force of the main gas spring. Thereby, the force which operates a side door can be reduced.
[0019]
According to a second aspect of the present invention, in the side-opening type loading platform structure according to the first aspect, the water entering the inner surface of the side door between the hinge and the side opening is received and externally received. And two rows of groove rails provided substantially horizontally along the upper portion of the loading platform, and a seal rubber for sealing between the groove rails and the inner surface of the side door.
[0020]
According to the configuration of the invention described in claim 2, between the hinge and the side opening, two rows of groove rails extending along the upper portion of the loading platform, and seal rubber for sealing between each groove rail and the side door inner surface Since it is designed to catch the water that enters through the inner surface of the side door and discharges it to the outside, the rainproof sheet that was provided so that it can be seen from the outside of the cargo bed with the conventional structure becomes unnecessary, The appearance can be improved.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view conceptually showing the structure of an open side loading platform in the embodiment of the present invention, FIG. 2 is an enlarged perspective view showing the structure of part A in FIG. 1 in more detail, and FIG. It is a BB line enlarged schematic sectional drawing of. 1 to 3, a box-shaped loading platform 1 installed on a loading platform of a truck is provided with a pair of rear doors 2 that are opened on the rear surface, and side doors 3 and side doors 4 on both right and left sides. Are arranged separately on the upper and lower sides.
[0022]
Among them, the side door 3 is connected to the loading platform 1 via a hinge 7 attached to the outer upper portion of the side rail 6 that defines the upper portion of the opening 5 (see FIGS. 2 and 3) provided on the side surface of the loading platform 1. 2 and FIG. 3, the boundary between the cargo bed 1 and the side door 3 is set so as not to be seen from the side of the cargo bed 1. Accordingly, the pivot 7a serving as a pivot point of the hinge 7 is also provided on the upper side of the upper surface 1a (see FIG. 3) of the loading platform 1, and the hinge 7 cannot be seen from the side of the loading platform 1. Yes. The side door 3 can be pivoted up and down with the pivot 7a of the hinge 7 as a fulcrum. The side door 3 opens when it is pivoted upward and closes when it pivots downward. The rotation operation in the opening direction is performed using the main gas spring 8 as a driving force, and the rotation operation in the closing direction is performed by the operator pulling the pull rope 9 attached to the side door 3 strongly. . Further, an auxiliary gas spring 15 (see FIGS. 2 and 4) for controlling the opening / closing force of the side door 3 is provided on the loading platform 1 side. Moreover, the side door 3 shown with a continuous line in FIG.1 and FIG.3 has shown the state arrange | positioned in the closed position which closed the opening 5. FIG. In contrast to this, the side doors 3 depicted by the one-dot chain line in FIG. 1 and the solid lines in FIG. 2 and FIG. 4 are shown in the open positions where the openings 5 are opened. In this open position, the opening angle is limited by the stop means 25 (see FIG. 2). The main gas spring 8 itself may be used as a stopper without providing the stop means 25.
[0023]
Therefore, in the structure of the loading platform according to the present embodiment, in the structure of the portion where the side door 3 is attached to the loading platform 1, the side door 3 is opened up to the upper surface 1a, so that the side door 3 is opened at the open position Po. The height of 5 is not limited. Moreover, the dimension from the upper end of the opening 5 to the upper surface 1a becomes small, the dead space which cannot load a load can be decreased, and the efficiency of cargo handling work can be improved. Further, the hinge 7 is provided on the upper surface 1a side of the loading platform 1, and the hinge 7 and the boundary between the side door 3 and the loading platform 1 are made invisible from the side surface of the loading platform 1, thereby improving the appearance. be able to.
[0024]
Further, in the structure of the present embodiment, a waterproof means comprising a rail member 16 having two groove rail portions 16a and 16b and seal rubbers 17a and 17b is provided between the opening 5 and the side door 3. . The rail member 16 is attached to the outer surface of the side rail 6 disposed horizontally along the upper end of the opening 5 with the openings of the groove rail portions 16a and 16b extending in the left-right direction toward the upper side. Yes. Each of the groove rail portions 16a and 16b can receive rainwater, dust or the like that has entered from the gap between the side rail 6 and the side door 3 with the groove rail portions 16a and 16b, and can be discharged to the outside of the loading platform 1 from both ends. It has a structure. Further, a weather strip 18 is attached to the tip end portions of the protruding side surfaces of the groove rail portions 16a and 16b. The weather strip 18 is formed as a single elongated belt member. When the side door 3 is closed, the weather strip 18 is in close contact with the side door 3 to seal between the opening 5 and the side door 3.
[0025]
On the other hand, the side cover 4 is attached to the floor side of the loading platform 1 via a hinge 12 and can be turned up and down with the hinge 12 as a fulcrum. When it is turned upward, it is closed. In addition, the side turn 4 shown by the solid line in FIG. 1 shows a state in which the opening 5 is disposed in the closed position, and in this state, the side face 4 is substantially surfaced with respect to the side door 3 that is also disposed in the closed position. First, the closed side surface of the loading platform 1 is formed. On the other hand, the side turn 4 indicated by the alternate long and short dash line indicates a state in which the side turn 4 hangs down from the side surface of the loading platform 1 and is disposed at the open position where the opening 5 is opened.
[0026]
The main gas spring 8 for rotating the side door 3 from the closed position toward the open position is arranged on both the left and right sides of the loading platform 1 and in the front and rear in the structure of the present embodiment. As shown in detail in FIG. 2, the main gas spring 8 in each part is connected to the side rail side of the loading platform 1 via the pivot 13 so as to be pivotable in the vertical direction, and the other end side is It is connected to the inner side of the side door 3 via the pivot 14 so as to be pivotable in the vertical direction. The pivot 14 moves on a locus indicated by an arc 19 in FIG. 4 depending on the position of the side door 3. That is, when the side door 3 is in the closed position indicated by the alternate long and short dash line in FIG. 4, the pivot 14 is at the position indicated by the reference symbol Pc (hereinafter referred to as “closed position Pc”) and rotated 90 degrees from the closed position to the open direction. When the side door 3 is disposed at the open position indicated by the solid line, the pivot 14 is disposed at the position Po (hereinafter referred to as “open position Po”), and the dead center position at a position rotated by an angle α from the position Pc. Pd is created. The spring force of the main gas spring 8 acts in the direction in which the side door 3 is closed until it moves from the closed position Pc to the dead center position Pd, and between the dead center position Pd and the open position Po. It acts in the direction of opening the side door 3.
[0027]
The auxiliary gas springs 15 for controlling the opening / closing force of the side door 3 are arranged on the left and right sides of the loading platform 1 and in the front and rear in the structure of the present embodiment. As shown in FIGS. 2 and 4, the auxiliary gas spring 15 of each part is connected to the inside of the loading platform 1 so that one end side is pivotable in the vertical direction via the pivot 20, and the other end side is connected to the other end side. Projecting into the opening 5, the opening 5 is linked to the operating plate 23, which is rotatably mounted in the vertical direction via the bracket 21 and the pivot 22, and is linked to the vertical rotation via the pivot 24. In the structure of the present embodiment, the auxiliary gas spring 15 receives a pressing force from the side door 3 side via the operation plate 23 when the side door 3 is moved from the dead center position Pd to the closed position Pc. The rod 15a is retracted inward while being spring-charged and held in the spring-charged state. Further, when the side door 3 is opened from the closed position Pc toward the open position Po, the rod 15a of the auxiliary gas spring 15 is protruded by a spring-charged force, and the operation plate 23 is indicated by a solid line in FIG. Rotate until. The rotation of the operating plate 23 acts as a force that pushes the side door 3 in the opening direction.
[0028]
In the loading platform structure thus configured, the side door 3 is normally closed and locked by a side door locking means (not shown), and the auxiliary gas spring 15 is pushed by the side door 3 and is spring-charged. is there. When the side door 3 is opened, first, the closing lock by the side door locking means is released, and then the operator lifts the lower side of the side door 3 and rotates it in the opening direction. Then, as can be seen in FIG. 5, the main gas spring 8 exerts a force in the direction of closing the side door 3 from the closed position Pc to the dead center position Pd. A force Fc for opening the door is applied, the two forces cancel each other, and the side door 3 can be lifted with a small force. Further, when the side door 3 exceeds the dead center position Pd, the force from the auxiliary gas spring 15 is lost. Then, only the force of the main gas spring 8 works as a force for rotating the side door 3 in the opening direction, and thereafter, the side door 3 is opened to the open position Po with the help of the manpower and the main gas spring 8. In addition, it stops by the stop means 25 in the open position Po, and restricts the opening angle of the side door 3.
[0029]
On the other hand, when closing the side door 3, the operator pulls the pulling rope 9 hanging from the inside of the opened side door 3 with his hand and pulls it down to the open end of the side door 3. Rotate to the closed position Pc until a hand is applied. If an operator's hand gets on the open end of the side door 3, after that, the side door 3 will be directly rotated to the closed position side. In this rotation, a large force for contracting the main gas spring 8 is required up to the dead center position Pd. When the dead center position Pd is exceeded, the force of the main gas spring 8 acts as a force for rotating the side door 3 in the closing direction. At the same time, the inner surface of the side door 3 comes into contact with the operating plate 23 and passes through the operating plate 23. The auxiliary gas spring 15 is retracted while being spring charged. As a result, the force from the main gas spring 8 that attempts to close the side door 3 and the force from the auxiliary gas spring 15 that attempts to open the side door 3 cancel each other, and the interval between the dead center position Pd and the closed position Pc. Can be closed gently. Thereby, the side door 3 is not suddenly closed, and an improvement in safety can be expected.
[0030]
FIG. 5 is an action moment diagram showing the operating force required for the operator to close the side door 3 when closing the side door 3. The vertical axis indicates the moment generated around the hinge 7, and the horizontal axis indicates the side door 3. Open angle is shown. In the drawing, the curve indicated by Fg represents the moment generated by the main gas spring 8, the curve indicated by Fd is the moment generated by the weight of the side door 3, the curve indicated by Fc is the moment generated by the auxiliary gas spring 15, and the symbol A curve indicated by Fa is a combined moment (Fg−Fd + Fc), which is an operation force actually required by the operator. As can be seen from FIG. 5, when the side door 3 is opened, the generated moment Fg of the main gas spring 8 is from the closed position Pc (open angle 0 degree) to the dead center position Pd (α angle = about 25 degrees). However, since the generated moment Fc of the auxiliary gas spring 15 acts in the direction of opening the side door 3, the operating force Fa when opening the side door 3 to the dead center position Pd is ( Fg−Fd + Fc). Next, the operating force Fa from the dead center position Pd to the open position Po is (Fg−Fd), and the side door 3 is automatically opened. On the other hand, when the side door 3 is closed, the side door 3 is pulled to the closed position Pc side via the pulling rope 9 and rotated with a force that overcomes (Fg−Fd). When the side door 3 exceeds the dead center position Pd, the generated moment Fg of the main gas spring 8 works in the closing direction and the operating force Fa becomes (−). However, when the side door 3 is further closed, the operation plate 23 is moved to the side. Contact the door 3. Then, the generated moment Fc of the auxiliary gas spring 15 works as a force pushing the side door 3 in the direction of the open position Po, the forces of the main gas spring 8 and the auxiliary gas spring 15 cancel each other, and the side door 3 becomes (Fg + Fc). It is closed gently while braking force is applied.
[0031]
Next, the structure of the present embodiment in which the auxiliary gas spring 15 used in this embodiment is not provided and the structure of the present embodiment in which the auxiliary gas spring 15 is provided will be compared. Of course, looking only at the main gas spring that operates the side door, if the α angle (dead center position Pd) is increased, the moment at the open position Po can be increased, and the side door is reliably opened to a predetermined position. Can be made. However, the moment when the dead center position Po is closed to the closed position Pc also increases. For this reason, the speed at the final position of closing the side door increases, and there is a problem that the safety is impaired. On the other hand, when the structure is such that the auxiliary gas spring 15 can brake and ease the side door 3 when closed beyond the dead center position Pd, as in the structure of the loading platform in the present embodiment. Then, even if the α angle is increased, there is no problem when it is closed. For this reason, even if the main gas spring of the same power is used, the moment at the open position Po can be increased by setting the α angle to be large. Therefore, in the structure of the present embodiment, when the moment at the open position Po is to be obtained with the same magnitude as the conventional one, it is possible to use a main gas spring having a smaller power than the conventional one. Therefore, the operation force Fa can be reduced as a whole, and the force for operating the side door 3 can be reduced.
[0032]
【The invention's effect】
As described above, according to the side-opening load carrier structure according to the present invention, the following effects can be expected.
-Since the side door is lifted up to the upper side of the side opening and opened, the side opening height is not limited by the side door. For this reason, the difference with the height of the ceiling in the loading platform can be reduced, and the dead space in which no luggage can be loaded can be reduced, thereby improving the efficiency of cargo handling.
-Since the hinge and the boundary between the side surface and the loading platform are provided on the upper surface side and the structure is invisible from the side surface of the loading platform, the appearance of the appearance can be improved.
-If the side door is placed within the range in which the closing force is applied from the main gas spring to the side door, the side door is pushed back in the opening direction, but the auxiliary gas spring is applied to the side door. This return force becomes a brake and closes immediately before the final position, so that safety can be improved. Also, when the side door is opened from the closed position, it can be opened with a small operating force.
-When closed beyond a predetermined angle, the auxiliary gas spring can be braked to ease the closing force of the main gas spring, so the position at the predetermined angle (dead center position) is shifted to the opening direction. Thus, the side door can be set to a predetermined position with a small operating force of the main gas spring. Thereby, the force which operates a side door can be reduced. -Between the hinge and the side opening, two rows of groove rails extending along the upper part of the loading platform, and a seal rubber that seals between each groove rail and the side door inner surface, are transmitted along the inner surface of the side door Since the intruded water and dust are received and discharged to the outside, a rainproof sheet or the like provided so as to be visible from the outside of the cargo bed in the conventional structure becomes unnecessary, and the appearance can be improved.
[Brief description of the drawings]
FIG. 1 is an external perspective view schematically showing a side-opening type loading platform structure in an embodiment of the present invention.
2 is an enlarged perspective view showing in more detail the structure of part A in FIG. 1. FIG.
FIG. 3 is an enlarged schematic cross-sectional view taken along line BB in FIG.
FIG. 4 is an operation explanatory view of a main gas spring and an auxiliary gas spring with respect to a side door in the present embodiment.
FIG. 5 is an action moment diagram in the present embodiment.
FIG. 6 is an external perspective view conceptually showing an example of a conventional side surface type loading platform structure.
7 is an enlarged schematic cross-sectional view taken along the line CC of FIG. 6;
FIG. 8 is an operation explanatory view of a main gas spring with respect to a side door in a conventional structure.
FIG. 9 is an action moment diagram in a conventional structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Loading platform, 3 ... Side door, 4 ... Side turning, 5 ... Opening, 6 ... Side rail, 7 ... Hinge, 8 ... Main gas spring, 9 ... Pulling rope, 15 ... Auxiliary gas spring, 16 ... Rail material, 16a ... groove rail part, 16b ... groove rail part, 23 ... actuating plate, 25 ... stop means, Po ... open position, Pd ... dead point position, Pc ... closed position.

Claims (2)

A hinge attached to the upper part of the side of the cargo bed by providing a pivot point above the upper surface of the box-shaped cargo bed;
A side door that is attached to the side surface of the cargo bed so as to be able to open and close the side opening of the cargo bed via the hinge, and that is rotated to a position above the side opening when opened,
A force in the closing direction is applied to the side door while the side door is opened from the closed position to a predetermined angle, and a force in the opening direction is applied to the side door when the side door is opened beyond the predetermined angle range. A main gas spring to be applied,
An auxiliary gas spring that applies a force in the opening direction to the side door when the side door is disposed within a range in which the force in the closing direction is applied by the main gas spring;
A side-opening type cargo bed structure characterized by comprising: Between the hinge and the side opening, two rows of groove rails provided substantially horizontally along the upper part of the cargo bed portion for receiving and discharging water that has entered the inner side of the side door and discharged to the outside 2. A side-opening load carrier structure according to claim 1, wherein a seal rubber is provided for sealing between each groove rail and the inner surface of the side door.

Images