JP3962698B2 - Lamp device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a cargo loading / unloading device (lamp device) in a cargo transportation aircraft or ship.
[0002]
[Prior art]
Conventionally, there has been disclosed a lamp device used for, for example, a ship. This ramp device is a ramp that rotates around the pivot provided on the upper deck of the hull, bridges between the upper deck and the lower deck in the ship, and loads vehicles etc. from the upper deck to the lower deck, Or it is provided to move from the lower deck to the upper deck. An auxiliary lamp (lamp flap) that swings within a predetermined angle range with respect to the lamp is attached to the tip of the lamp, and the auxiliary lamp fills a step between the lamp and the lower deck. Bring. As a result, when the loaded vehicle moves between the upper and lower decks, the vehicle travels smoothly (see Patent Document 1).
[0003]
Apart from this, as conventional lamp devices, for example, there are those shown in FIGS.
[0004]
FIG. 4A is a side view showing a cargo loading portion at the rear of the fuselage aircraft.
[0005]
The cargo loading section is provided with an upper door 2 and a lamp door 3 that are supported so as to be rotatable around support pins (not shown) and are driven in the vertical direction by the driving devices 1a and 1b, respectively. When carrying cargo into or out of the aircraft 1, the upper door 2 is expanded upward by the driving device 1 a and the ramp door 3 is expanded downward by the driving device 1 b to carry in the cargo. An exit is secured.
The auxiliary lamp 4 attached to the front end portion of the lamp door 3 fills the step between the lamp door 3 and the ground surface so that the vehicle or the like can run smoothly.
[0006]
FIG. 4B and FIG. 5 show the relationship between the lamp door 3 and the auxiliary lamp 4 attached to the front end portion thereof. An auxiliary lamp 4 is attached to the front end of the lamp door 3. The auxiliary lamp 4 is rotated in the vertical direction by an actuator 5 attached to the tip of the lamp door 3. Cargo is carried in and out in the unfolded state in which the auxiliary lamp 4 is opened substantially parallel to the lamp door 3, and the auxiliary lamp 4 is stored upright with respect to the lamp door 3.
[0007]
In the conventional example shown in FIG. 5, four auxiliary lamps 4 are provided for the lamp door 3, but the number of auxiliary lamps 4 is not particularly limited to this number. There may also be a plurality of sheets other than four.
[0008]
By the way, when the vehicle is carried in and out by self-propelling, in order for the vehicle to run smoothly, the lamp door 3 and the auxiliary lamp 4 are unfolded in a flat state, and the tip of the auxiliary lamp 4 and the ground As for the ground contact surface, it is developed so as to eliminate the step as much as possible.
[0009]
On the other hand, as shown in FIG. 6, when carrying in and carrying out pallet cargo carried via a forklift or the like, a roller unit 40 for bringing the pallet cargo into and out by rolling to a roller is placed on the auxiliary lamp 4. In addition, a predetermined space is provided between the lamp door 3 and the auxiliary lamp 4 in order to secure a space for inserting the fork of the forklift between the upper surface (cargo transport surface) of the auxiliary lamp 4 and the rolling contact surface of the roller unit 40. It is set as the expansion | deployment state which gives the level | step difference 6. FIG.
[0010]
As described above, the lamp device has a predetermined step between the auxiliary lamp 4 and the lamp door 3 when the auxiliary lamp 4 is continuously deployed flat with no step with respect to the lamp door 3 (upper position deployed state). 6 is required to be deployed (lower position deployed state), it is usually necessary to switch between these two states according to the situation. FIG. 7A shows the case where the auxiliary lamp 4 is in the upper position deployed state, and FIG. 7B shows the case where the auxiliary lamp 4 is in the lower position deployed state.
[0011]
Conventionally, switching between these two states, that is, changing the attachment position of the auxiliary lamp 4 to the lamp door 3 has been performed in the following procedure.
[0012]
First, the auxiliary lamp 4 is raised as indicated by the arrow (1), and the lamp door 3 is rotated to the retracted position ((2)). Next, the engagement between the auxiliary lamp 4 and the lamp door 3 is released, and the auxiliary lamp 4 is lifted ((3)). After the auxiliary lamp 4 is shifted by the step h (rightward in the drawing) (after alignment), it is engaged again (4). In this state, the lamp door 3 is rotated in the unfolding direction (5), and the auxiliary lamp 4 is rotated to the horizontal unfolding position (6). As a result, when the auxiliary lamp 4 is in the unfolded state, a step having a height h is generated on the coupling surface between the lamp door 3 and the auxiliary lamp 4. On the contrary, when switching from the lower position deployed state to the upper position deployed state, an operation reverse to the above procedure may be performed.
[0013]
[Patent Document 1]
Japanese Utility Model Publication No. 5-37682 [0014]
[Problems to be solved by the invention]
However, in such a conventional lamp device, it is necessary to change the posture of the auxiliary lamp 4 with respect to the lamp door 3 from the upper position deployed state to the lower position deployed state or vice versa. In addition, a special device for lifting the auxiliary lamp 4 is necessary for switching, and positioning (positioning for the step h) is required when connecting the auxiliary lamp 4 to the lamp door 3. There was a problem that it took.
[0015]
The present invention has been made in view of the above problems, and an object of the present invention is to enable easy and smooth switching of the vertical position of the auxiliary lamp with respect to the lamp door.
[0016]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the first invention includes a lamp door that rotates about its proximal end, and an auxiliary lamp that is deployed and stored by rotating with respect to the distal end portion of the lamp door. An end hinge shaft that rotatably supports the base end portion of the auxiliary lamp with respect to the distal end portion of the lamp door, and a guide plate that supports the end hinge shaft so that the end hinge shaft can be raised and lowered relative to the lamp door. A lamp device comprising: a lamp door that rotates about a base end side of the lamp door; and an auxiliary lamp that is deployed and stored by rotating with respect to the tip end portion of the lamp door. comprising an end hinge axis of the base end portion of the auxiliary lamp pivotally supported against, and a guide plate for vertically supporting the end hinge shaft to the lamp door, down from above into the guide plate Guide grooves inclined to the formation toward the fuselage forward from the machine body backward or tilted toward the fuselage forward fuselage rear, or from above to bottom toward, the auxiliary lamp by lifting the end hinge axis relative to the guide plate The vertical position with respect to the lamp door is switched, and the auxiliary lamp is expanded and stored with respect to the lamp door by rotating the auxiliary lamp around the end hinge shaft, and the elevation of the end hinge shaft with respect to the lamp door is locked. A stopper and a base end portion on the lamp door, and a tip end portion on the base end portion of the auxiliary lamp, and an actuator mounted above the end hinge shaft, the end hinge shaft is locked up and down by the stopper. When the actuator is extended or contracted in the state, the auxiliary lamp is moved to the lamp door along with the expansion and contraction. Then, when the actuator is extended and retracted with the end hinge shaft as a fulcrum and retracted and the stopper is unlocked, the end hinge shaft moves up and down relative to the lamp door along with the expansion and contraction. The auxiliary lamp has a cargo transport surface that is substantially parallel with a step with respect to the upper surface of the lamp door when the lamp is in the lower position developed state .
[0017]
As a result, it is not necessary to change the posture of the auxiliary lamp from the upper position deployed state to the lower position deployed state one by one, and it is not necessary to remove the auxiliary lamp from the end hinge at the time of switching. There is no need for a special device for lifting the container. Furthermore, it is not necessary to position the auxiliary lamp when it is connected to the lamp door.
[0019]
Thus, the end hinge shaft can be reliably prevented from descending, and the vertical position of the auxiliary lamp relative to the lamp door can be switched by the driving force of the actuator.
[0020]
According to a second aspect of the present invention, in the first aspect of the present invention, the front end portion of the lamp door is provided with a reaction force receiving portion that comes into contact with the rear surface of the cargo transport surface of the auxiliary lamp in the lower position deployed state. By supporting the lamp, the auxiliary lamp is restricted from rotating downward.
[0021]
As a result, it is possible to prevent the auxiliary lamp from being bent or rotated downward due to its own weight or due to the load of the loaded cargo.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0023]
FIG. 1 is a front view of a lamp device according to the present invention (hereinafter referred to as the present lamp device), and FIG. 2 is a side view thereof.
[0024]
As shown in FIG. 1 and FIG. 2, this lamp device is used for accessing the ground or the like by being attached to the lamp door 3 that can be opened and closed with respect to the fuselage and being pivotably attached to the tip of the lamp door 3. An end hinge shaft 8 having an auxiliary lamp 4 and rotatably supporting the base end portion of the auxiliary lamp 4 with respect to the distal end portion of the lamp door 3; And a guide plate 30 that supports it. The vertical position of the auxiliary lamp 4 with respect to the lamp door 3 is switched by moving the end hinge shaft 8 up and down with respect to the guide plate 30, and the auxiliary lamp 4 is rotated around the end hinge shaft 8. Can be expanded and stored with respect to the lamp door 3.
[0025]
The auxiliary lamp 4 is expanded and retracted by extending and contracting a hydraulic cylinder (actuator) 9. More specifically, when the hydraulic cylinder 9 is extended, the auxiliary ramp 4 is deployed with the end hinge shaft 8 as a fulcrum, and retracted by retracting the hydraulic cylinder 9 (the chain line in FIG. 2). In addition, the lamp device can switch the deployment position of the auxiliary lamp 4 with respect to the lamp door 3 between the upper position and the lower position ((a) and (b) in FIG. 2). An end hinge 21 projecting from the end portion toward the lamp door, an end hinge shaft 8 projecting outward from the side surface of the end hinge 21, and an end mounted on the lamp door 3 and provided outside the end hinge 21 This is realized by a configuration including a guide plate 30 paired with the hinge 21 and a guide groove 31 carved in the guide plate 30. That is, in the above configuration, the end hinge shaft 8 is fitted in the guide groove 31 and slides in the vertical direction on the guide groove 31 so that the vertical position of the auxiliary lamp 4 with respect to the lamp door 3 can be switched. Yes. Further, when the end hinge shaft 8 is positioned above the guide groove 31 and the auxiliary lamp 4 is in an upper position with respect to the lamp door 3, the end hinge shaft 8 is lowered along the guide groove 31. In order to prevent this, a stopper 26 is provided for locking the lowering of the end hinge shaft 8. As a means for moving the end hinge shaft 8 up and down along the guide groove 31, the driving force of the hydraulic cylinder 9 is used in the same manner as when the auxiliary lamp 4 is deployed and stored.
[0026]
Hereinafter, each component constituting the lamp device will be described in detail based on these drawings.
[0027]
The lamp door 3 is rotatably supported around a support pin (not shown) attached to the machine body. Then, the cargo doorway is opened when the lamp door 3 is rotated downward relative to the airframe, and the cargo doorway is closed when the lamp door 3 is rotated upward. An auxiliary lamp 4 is rotatably supported at the tip of the lamp door 3. In addition, a guide plate 30, a hydraulic cylinder 9, and the like that are connected to the auxiliary lamp 4 are attached to the lamp door 3.
[0028]
The auxiliary lamp 4 is formed so that the cargo transport surface 14 is substantially parallel to the upper surface of the lamp door 3 in the deployed state at the lower position. In addition, a grounding surface 15 that is inclined upward is provided at the tip of the auxiliary lamp 4 and on the back surface of the cargo transport surface 14. The ground contact surface 15 is provided so that the cargo transport surface 14 is in contact with the ground without any step when the upper position is deployed, and a step is eliminated between the upper surface of the ramp door 3 and the cargo transport surface 14 when the upper position is deployed. In addition, the vehicle can smoothly travel on the cargo transportation surface 14 and the like in combination with the fact that the vehicle is slightly inclined downward and deployed with respect to the lamp door 3 ((a) of FIG. 2). An end hinge 21 protruding to the lamp door side is attached to the base end portion of the auxiliary lamp 4.
[0029]
Deployment and storage of the auxiliary lamp 4 or switching of the vertical position of the auxiliary lamp 4 with respect to the lamp door 3 is performed by expansion and contraction of the hydraulic cylinder 9. Therefore, the rod tip of the hydraulic cylinder 9 is attached to the auxiliary lamp 4 via the end hinge 21 (rotating shaft 25), and the base end is attached to the lamp door 3.
[0030]
The rod end of the hydraulic cylinder 9 is rotatably coupled to a rotating shaft 25 directly connected between the pair of end hinges 21. Specifically, the rod tip is pin-coupled to an arm portion 24 that is substantially in the center of the rotating shaft 25 and protrudes in the radial direction. The base end of the hydraulic cylinder 9 is pin-coupled to the lamp door 3 via a bracket so as to be rotatable.
[0031]
A pair of end hinges 21 provided from both sides of the cargo transport surface 14 are plate-shaped protruding from the base end of the auxiliary lamp 4 toward the lamp door, and are connected to the lamp door 3 via the hydraulic cylinder 9 and the guide plate 30. It plays a role as a connecting member that bears.
[0032]
The end hinge 21 has a square shape that is bent obliquely downward toward the lamp door direction, and a rotary shaft 25 is attached in the vicinity of the folding point of the square shape. The rotating shaft 25 is a connecting rod that connects the pair of end hinges 21 as described above. Further, an end hinge shaft 8 protrudes outward (toward the front of the drawing) at the lower tip portion of the dogleg shape.
[0033]
The end hinge 21 and the auxiliary lamp 4 are engaged with each other via a pin 29. Therefore, if the pin 29 is pulled out to release the engagement, the auxiliary lamp 4 can be removed from the end hinge 21 and the mounted object can be dropped into the air. Of course, the auxiliary lamp 4 and the end hinge 8 may be integrally formed.
[0034]
The guide plate 30 is provided in a pair with the end hinge 21, and is a plate-like one attached to the lamp door 3 outside the end hinge 21. A guide groove 31 into which the end hinge shaft 8 is fitted is formed on the side surface of the guide plate 30. The guide groove 31 is carved into an elliptical shape having a certain length so that the end hinge shaft 8 can slide in the vertical direction. Therefore, the end hinge shaft 8 slides in the vertical direction on the guide groove 31. The length of the guide groove 31 is such that when the end hinge shaft 8 is locked to the uppermost position of the guide groove 31 and the auxiliary lamp 4 is deployed, the auxiliary lamp 4 is in the upper position deployed state with respect to the lamp door 3. When the end hinge shaft 8 is locked to the lowermost position of the guide groove 31 and the auxiliary lamp 4 is deployed, the auxiliary lamp 4 is determined to be in a lower position deployed state with respect to the lamp door 3.
[0035]
However, if the locking position of the end hinge shaft 8 is controlled by the hydraulic cylinder 9, the length of the guide groove 31 may be longer than the above length.
[0036]
In the present embodiment, the guide groove 31 is engraved in an inclined manner from the upper side to the lower side from the front of the aircraft (left side of the drawing) to the rear of the aircraft (right side of the drawing). For example, if the guide groove 31 is formed vertically without being inclined, the driving force of the hydraulic cylinder 9 is transmitted through the end hinge shaft 8 to the concave side surface of the guide groove 31 (in the driving force direction of the hydraulic cylinder 9). This acts as a resistance and the end hinge shaft 8 does not move up and down smoothly on the guide groove 31. Therefore, by forming the guide groove 31 to be inclined, a component force of the force with which the hydraulic cylinder 9 pushes or pulls the end hinge shaft 8 works along the guide groove 31, and the end hinge shaft 8 moves on the guide groove 31. I was able to move smoothly.
[0037]
Therefore, as another embodiment, the guide groove 31 may be formed so as to incline from the rear side (right side in the drawing) toward the front side (left side in the drawing) from the upper side to the lower side from above. In this case, when the auxiliary lamp 4 is moved from the upper position deployed state to the lower position deployed state, if the hydraulic cylinder 9 is contracted, the end hinge shaft 8 moves downward along the guide groove 31.
[0038]
In order to prevent the end hinge shaft 8 from descending along the guide groove 31 when the auxiliary lamp 4 is in the upper position with respect to the lamp door 3, the end hinge shaft 8 is restrained from descending. A stopper 26 is provided. When the end hinge shaft 8 is above the guide groove 31 when the end hinge shaft 8 is in the upper position deployed state or the like, the stopper 26 is configured to be fitted into the recess of the guide groove 31 below the end hinge shaft 8. Thereby, even if the end hinge shaft 8 is above the guide groove 31, the end hinge shaft 8 is held at this position by the stopper 26, and the lowering of the end hinge shaft 8 can be restricted.
[0039]
On the other hand, when the auxiliary lamp 4 is in the lower position with respect to the lamp door 3 and the end hinge shaft 8 is positioned below the guide groove 31, the stopper 26 is positioned above the end hinge shaft 8. And fit into the recess of the guide groove 31. As a result, the end hinge shaft 8 can be firmly fixed below the guide groove 31. If the hydraulic cylinder 9 is expanded and contracted while the auxiliary ramp 4 is in the lower position, the auxiliary ramp 4 uses the end hinge shaft 8 as a fulcrum. Expand and store.
[0040]
The setting and release of the stopper 26 may be performed manually or automatically using an actuator or the like.
[0041]
As described above, when the end hinge shaft 8 is locked by the stopper 26, the auxiliary lamp 4 rotates about the locked end hinge shaft 8 by the expansion and contraction of the hydraulic cylinder 9. Expand and store for. On the other hand, if the end hinge shaft 8 is not locked by the stopper 26, the end hinge shaft 8 slides in the vertical direction on the guide groove 31 due to the expansion and contraction of the hydraulic cylinder 9. To move on. That is, the vertical position of the auxiliary lamp 4 with respect to the lamp door 3 can be switched.
[0042]
In order to restrict the auxiliary lamp 4 from rotating clockwise due to its own weight or cargo load when the lower position is deployed, a reaction force receiving portion 18 is provided at the front end of the lamp door 3. The reaction force receiving portion 18 is in contact with the back side of the cargo transport surface 14 on the base end side of the auxiliary lamp 4. Therefore, the reaction force receiving portion 18 can receive the weight of the auxiliary lamp 4 and the cargo loading load in the lower position deployed state.
[0043]
On the other hand, in the deployed state of the upper position, it is possible to receive the weight of the auxiliary lamp 4 and the cargo load with the grounding surface 15 at the tip of the auxiliary lamp 4 and in contact with the ground and the end hinge shaft 8 restricted by the stopper 26. .
[0044]
The lamp door 3 is provided with a pair of pins 33 that come into contact with the cargo transport surface 14 of the auxiliary lamp 4 when the auxiliary lamp 4 is in the retracted state, that is, when the auxiliary lamp 4 stands with respect to the lamp door 3. With the auxiliary lamp 4 standing up, the pin 33 comes into contact with the cargo transport surface 14 of the auxiliary lamp 4 so that the auxiliary lamp 4 is supported by the pin 33 and the auxiliary lamp 4 is further on the machine body side (counterclockwise). I try not to fall down. Further, when the vertical position of the auxiliary lamp 4 is switched while the pin 33 remains in the retracted state, the pin 33 contacts the cargo transport surface 14 and also serves as a guide when the auxiliary lamp 4 moves up and down.
[0045]
The above is the configuration of the lamp device. Next, the operation will be described with reference to FIG. In FIG. 3, (1) to (3) show how the auxiliary lamp 4 is stored and deployed when the auxiliary lamp 4 is located above the lamp door 3. In (1) to (3) of FIG. 3, the auxiliary lamp 4 is in an upper position with respect to the lamp door 3, so that the end hinge shaft 8 is locked above the guide groove 31.
[0046]
When the hydraulic cylinder 9 is extended from the retracted state (1) in FIG. 3, the auxiliary ramp 4 starts to deploy with the end hinge shaft 8 as a fulcrum as shown in (2) in FIG. When the hydraulic cylinder 9 is further extended, the auxiliary lamp is fully deployed as shown by (3) in FIG. At this time, the grounding surface 15 of the auxiliary lamp 4 is in contact with the ground, and there is no step between the upper surface of the lamp door 3 and the cargo transport surface.
[0047]
In FIG. 3, (5) to (7) show how the auxiliary lamp 4 is stored and deployed when the auxiliary lamp 4 is in a lower position with respect to the lamp door 3. In this case, the operation is the same as the operations (1) to (3) except that the end hinge shaft 8 is locked below the guide groove 31. That is, when the hydraulic cylinder 9 is extended from the retracted state, the auxiliary ramp 4 is deployed with the end hinge shaft 8 as a fulcrum. However, as shown in (7) in FIG. 3, when the auxiliary lamp 4 is in a fully unfolded state, the auxiliary lamp 4 develops with a predetermined step and substantially parallel to the upper surface of the lamp door 3, and its tip portion. Does not touch the ground. Accordingly, in the deployed state at the lower position, the weight of the auxiliary lamp 4, the load at the time of cargo loading, and the like are received by the reaction force receiving portion 18.
[0048]
When the auxiliary lamp 4 is shifted from the unfolded state to the retracted state, an operation reverse to the above may be performed.
[0049]
Next, the switching operation between the upper position deployed state and the lower position deployed state will be described. In the state of the upper position where the end hinge shaft 8 is locked above the guide groove 31 as shown by (1) in FIG. 3, the stopper 26 is pulled out from the guide groove 31 to release the lock of the end hinge shaft 8. . When the hydraulic cylinder 9 is extended in this state, the end hinge shaft 8 moves downward along the guide groove 31. When the end hinge shaft 8 moves downward, the stopper 26 is fitted over the end hinge shaft 8 and in the recess of the guide groove 31. By the way, when the auxiliary lamp 4 is switched in the retracted state when the auxiliary lamp 4 is switched, the auxiliary lamp 4 is moved up and down while the pin 33 is in contact with the cargo transport surface 14. Act as a guide.
[0050]
The above description shows the switching of the vertical position of the auxiliary lamp 4 in the retracted state as indicated by (1) and (4) in FIG. Of course, it can be done even in the state of being.
[0051]
On the contrary, when the auxiliary lamp 4 is moved from the lower position to the upper position, the stopper 26 is pulled out from the guide groove 31 and the hydraulic cylinder 9 is contracted.
[0052]
The present invention is not limited to the above-described embodiment, and it is obvious that various modifications can be made within the scope of the technical idea.
[0053]
【The invention's effect】
According to the present invention, the end hinge shaft that rotatably supports the base end portion of the auxiliary lamp with respect to the distal end portion of the lamp door, and the guide plate that supports the end hinge shaft so as to be movable up and down with respect to the lamp door. The vertical position of the auxiliary lamp relative to the lamp door can be switched by raising and lowering the end hinge shaft relative to the guide plate, and the auxiliary lamp can be deployed with respect to the lamp door by rotating the auxiliary lamp around the end hinge rod. Since it is configured to be retracted, it is not necessary to change the posture of the auxiliary lamp from the upper position deployed state to the lower collapsed deployed state, and it is not necessary to remove the auxiliary lamp from the end hinge at the time of switching. There is no need for a special device for lifting the auxiliary lamp. Furthermore, it is not necessary to position the auxiliary lamp when it is connected to the lamp door.
[0054]
Also, there are provided a stopper for locking the elevation of the end hinge shaft relative to the lamp door, and an actuator attached at the base end portion to the lamp door and the distal end portion being the base end portion of the auxiliary lamp and above the end hinge shaft. When the actuator is extended and retracted while the end hinge shaft is locked up and down by the stopper, the auxiliary lamp deploys and retracts with the end hinge shaft as a fulcrum with respect to the lamp door as the expansion and contraction occurs. When the actuator is extended and retracted in the state where the stop is released, the end hinge shaft moves up and down with respect to the lamp door along with the expansion and contraction, so that the vertical position of the auxiliary lamp with respect to the lamp door can be switched. The lowering of the shaft can be reliably prevented, and the vertical position of the auxiliary lamp relative to the lamp door can be cut by the driving force of the actuator. Instead it can be performed.
[0055]
Further, in the deployed state of the lower position, a reaction force receiving portion that contacts the rear surface of the cargo transport surface of the auxiliary lamp is provided at the tip of the lamp door, and this auxiliary force receiving portion supports the auxiliary lamp. Therefore, it is possible to prevent the auxiliary lamp from being bent or rotated downward due to its own weight or due to the load of the loaded cargo.
[Brief description of the drawings]
FIG. 1 is a plan view of a lamp device showing an embodiment of the present invention.
FIGS. 2A and 2B are side views showing an upper position deployed state and FIG. 2B a lower position deployed state of the lamp device according to the embodiment of the present invention.
FIG. 3 is an explanatory diagram showing the position switching operation of the auxiliary lamp with respect to the lamp door in the lamp device showing the embodiment of the present invention.
4A is a side view of a rear part of an aircraft body such as a cargo transporter, and FIG. 4B is a side view showing a lamp door and an auxiliary lamp.
FIG. 5 is a perspective view of a conventional lamp device.
FIG. 6 is a side view showing a lower position developed state of a conventional lamp device.
FIGS. 7A and 7B are side views showing a conventional lamp device in an upper position deployed state and FIG. 7B in a lower position deployed state, respectively.
[Explanation of symbols]
3 Lamp door 4 Auxiliary lamp 8 End hinge shaft 9 Hydraulic cylinder (actuator)
18 Reaction force receiving portion 21 End hinge 26 Stopper 30 Guide plate 31 Guide groove

Claims (2)

A lamp device comprising: a lamp door that rotates about its proximal end; and an auxiliary lamp that is deployed and stored by rotating with respect to the tip of the lamp door. An end hinge shaft that rotatably supports the base end portion of the auxiliary lamp, and a guide plate that supports the end hinge shaft so that the end hinge shaft can be moved up and down relative to the lamp door. A guide groove that is inclined from the front of the fuselage toward the rear of the fuselage or inclined from the top to the bottom of the fuselage from the rear of the fuselage to the front of the fuselage is formed, and the auxiliary hinge is moved up and down with respect to the guide plate The vertical position of the lamp with respect to the lamp door is switched, and the auxiliary lamp is rotated around the end hinge shaft. Developing the auxiliary lamp to the lamp door by a, a configuration for storing, a stopper for locking the vertical movement of the end hinge axis with respect to the lamp door, a base end portion to the lamp door, the auxiliary tip portion An actuator mounted on the base end of the lamp and above the end hinge shaft, and when the actuator is extended and contracted in a state where the elevation of the end hinge shaft is locked by the stopper, Accordingly, when the auxiliary lamp expands and retracts with respect to the lamp door with the end hinge shaft as a fulcrum, and the stopper is unlocked, the actuator is expanded and contracted. A hinge shaft moves up and down with respect to the lamp door, and switches the vertical position of the auxiliary lamp with respect to the lamp door. And then, the auxiliary lamp lamp apparatus characterized by having a cargo conveyor surface substantially parallel with a step with respect to the upper surface of the lamp door when in the lower position deployed state. In the deployed state of the lower position, a reaction force receiving portion that abuts against the back surface of the cargo transport surface of the auxiliary lamp is provided at the front end of the lamp door, and the reaction force receiving portion supports the auxiliary lamp, thereby supporting the auxiliary lamp. The lamp device according to claim 1 , wherein the lamp is restricted from rotating downward.

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