JP3962697B2 - 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 a 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, for example, there are conventional lamp devices shown in FIGS.
[0004]
FIG. 6A is a side view showing a cargo loading section at the rear of the fuselage aircraft. The cargo loading section is provided with a lamp door 3 and an upper door 2 that are supported so as to be rotatable around support pins (not shown) and are driven in the vertical direction by driving devices 1a and 1b, respectively. When carrying cargo into or out of the aircraft, the upper door 2 is expanded upward and the lamp door 3 is expanded downward, thereby securing the cargo loading / unloading exit.
[0005]
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]
FIGS. 6B and 7 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 rotatably supported by an actuator 5 attached to the tip of the lamp door 3, and cargo is carried in and out in a deployed state where the auxiliary lamp 4 is opened substantially parallel to the lamp door 3. The auxiliary lamp 4 is stored in a standing state with respect to the lamp door 3.
[0007]
In the conventional example shown in FIG. 7, 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, and the number is one. 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. 8, when carrying in and carrying out pallet goods carried via a forklift or the like, a roller unit 40 for bringing the pallet goods 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 development 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.
[0011]
FIG. 9A shows the case where the auxiliary lamp 4 is in the upper position deployed state, and FIG. 9B shows the case where the auxiliary lamp 4 is in the lower position deployed state. 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 connection between the auxiliary lamp 4 and the lamp door 3 is manually released, and the auxiliary lamp 4 is lifted ((3)). After the auxiliary lamp 4 is shifted forward (rightward in the drawing) by the step h (after alignment), it is lowered and further connected (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. At the same time, there is a problem in that switching requires a special device for lifting the auxiliary lamp 4 and takes time and effort. Further, when the auxiliary lamp 4 is connected to the lamp door 3, there is a problem that the positioning for the step h must be performed.
[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 problem, the first invention includes a lamp door that rotates about a base end side thereof, and an auxiliary lamp that is deployed and stored by rotating with respect to a distal end portion of the lamp door. The lamp device includes a tension link that has one end rotatably attached to the lamp door and the other end rotatably attached to the base end of the auxiliary lamp, and the base end of the auxiliary lamp is tensioned. The vertical position of the auxiliary lamp relative to the lamp door can be switched by rotating around one end of the link, and the auxiliary lamp can be deployed and stored by rotating around the other end of the tension link. It is characterized by.
[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 or vice versa, and it is not necessary to remove the auxiliary lamp from the lamp door each time it is switched. May be.
[0018]
Furthermore, the first invention is The base end is pivotally attached to the lamp door, and the tip is pivotally attached to the base end of the auxiliary lamp. lamp of The base end is switched in the vertical direction with respect to the lamp door, and the auxiliary lamp is developed and stored around the other end of the tension link.
[0019]
Thereby, the posture of the auxiliary lamp can be switched from the upper position deployed state to the lower position deployed state or vice versa by only driving the actuator, and the state switching can be performed easily and smoothly.
[0020]
Furthermore, the first invention is It is the base end of the auxiliary lamp, and has an end hinge that protrudes toward the lamp door, and a mount that is provided at the front end of the lamp door and is paired with the end hinge. The end hinge is joined to the other end of the tension link. And a pin for connecting to the tip of the actuator and a guide roller at a position lower than the connecting portion with the tension link, while the mount has a guide groove that allows the guide roller to roll up and down Thus, when the auxiliary lamp is in the lower position deployed state, the guide roller engages with the deepest portion of the guide groove, and as the actuator extends, the guide roller is raised while being guided by the guide groove. As well as , Auxiliary lamp is in the up position When it reaches The guide roller is positioned at the top of the guide groove so that the auxiliary lamp For the lamp door at the base end It is configured to switch the vertical position 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 in the lower position deployed state It is characterized by that.
[0021]
Thereby, switching from the lower position deployed state to the upper position deployed state can be performed reliably.
[0022]
First 2 The invention of the 1 In the invention, it has a stopper projecting toward the auxiliary lamp side and provided on the mount, and a stopper piece provided in the distal direction of the tension link but behind the other end, and the tension link has one end as a fulcrum. When the stopper piece is pivoted upward, the stopper piece comes into contact with the stopper from below. A feature is that the lowering of the tension link is restricted unless it is released.
[0023]
Accordingly, the tension link or the end hinge can be reliably prevented from descending in the deployed state of the upper position, and the configuration is simplified because the stopper is provided on the mount and the stopper piece is provided on the tension link.
[0024]
First 3 The invention of the first Or First 2 According to the invention, the upward movement of the tension link is restricted by the tension link coming into contact with the upper plate of the lamp door in the upper position deployed state.
Accordingly, the upward rotation of the tension link and the end hinge can be reliably restricted in the upper position deployed state.
[0025]
First 4 The invention of the 1 To the second 3 In any one of the inventions, a pair of end hinges projecting from the base end portion of the auxiliary lamp to the lamp door side, and a number of mounts corresponding to the end hinges at the distal end portion of the lamp door, A connecting rod connected to the tip of the actuator is directly connected between the end hinges.
[0026]
Thus, by providing a pair of end hinges for each auxiliary lamp, the rigidity of the connecting portion between the lamp door and the auxiliary lamp is increased, and a connecting rod is connected between each end hinge, so that an actuator can be attached to this. System can be configured.
[0027]
First 5 The invention of the 2 To the second 4 In this invention, the protruding portion of the stopper has a convex shape inclined from the lower side to the upper side, and a spring for protruding the protruding portion is provided on the stopper.
[0028]
Thereby, a simple stopper mechanism can be constituted.
[0029]
First 6 The invention of the 2 To the second 5 In any one of the inventions, the tension links are provided in two pairs so as to sandwich the mount and the end hinge, and a stopper piece is fitted between the two pairs of tension links.
[0030]
This eliminates the need to secure a special space for providing the stopper piece.
[0031]
First 7 The invention of the 1 To the second 6 In any one of the inventions, the mount is plate-shaped, a rectangular portion having a low height at the tip of the mount is used as an auxiliary lamp support portion, and first and second protrusions are provided behind the auxiliary lamp support portion. A guide groove is formed between the first and second protrusions, and the auxiliary lamp is connected to the base end portion of the auxiliary lamp from the inverted L-shaped recess provided on the back surface of the cargo transport surface. When the lower position of the door is deployed, the support surface of the auxiliary lamp support portion supports the upper surface of the recess, thereby restricting the auxiliary lamp from rotating further downward from the horizontal state. It is characterized by that.
[0032]
Thus, the downward movement of the auxiliary lamp can be restricted in the lower position deployed state.
[0033]
First 8 The invention of the 7 In the invention, the auxiliary lamp support portion includes a reaction force receiving portion having a surface perpendicular to the upper surface, and a side surface having a surface perpendicular to the upper surface of the recess, Is configured such that the reaction force receiving portion and the side surface come into contact with each other when the lamp is in the lower position deployed state with respect to the lamp door, thereby restricting the rotation of the auxiliary lamp.
[0034]
As a result, in the lower position deployed state, the downward movement of the auxiliary lamp can be restricted and the rotation can also be restricted.
[0035]
First 9 The invention of the 8 In this invention, the reaction force receiving portion and the side surface come into contact with each other when the reaction lamp receiving portion and the side surface having a surface perpendicular to the upper surface of the recess are in the deployed position in the lower position with respect to the lamp door. In this case, the rotation of the auxiliary lamp is restricted by giving the tension link a tensile force that pulls the auxiliary lamp in the mounting direction.
[0036]
Accordingly, the auxiliary lamp rotation can be reliably regulated in the lower position deployed state.
[0037]
First 10 The invention of the 7 To the second 9 In any one of the inventions, there is provided a third guide surface which is an inclined portion obtained by cutting the corner portion between the upper surface and the side surface of the auxiliary lamp support portion so that the auxiliary lamp is moved from the lower position expanded state to the upper position expanded state, or In the process of switching to the reverse direction, the corner portion that is the intersection of the upper surface and the side surface of the concave portion of the auxiliary lamp is configured to move up and down while being guided by the third guide surface.
[0038]
Thereby, the auxiliary lamp can be reliably guided in the process of raising and lowering the auxiliary lamp.
[0039]
First 11 The invention of the first to the second 10 In any one of the inventions, the auxiliary lamp and the end hinge are detachably connected via a pin.
[0040]
As a result, the auxiliary lamp can be removed from the end hinge, and the mounted object can be dropped into the air.
[0041]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0042]
FIG. 1 is a front view of a lamp device according to the present invention, and shows a mounting relationship between the auxiliary lamp 4 and the lamp door 3 and the auxiliary lamp 4, and FIG. 2 shows it from the side. . In particular, FIG. 2A shows a lower position developed state where a predetermined step 6 is provided between the lamp door 3 and the auxiliary lamp 4, and FIG. 2B shows the lamp door 3 and the auxiliary lamp. This shows a developed state in which the lamp door 3 and the auxiliary lamp 4 extend continuously without a step between the lamps 4. FIG. 3 is a perspective view of the lamp device.
[0043]
As shown in FIGS. 1 and 2, the lamp device is a cargo loading / unloading lamp door 3 that is attached to the machine body so as to be openable and closable, and is attached to the tip of the lamp door 3 so as to be rotatable. And an auxiliary lamp 4 that is used for access. The auxiliary lamp 4 is expanded and retracted by expansion and contraction of the hydraulic cylinder 9. When the cargo is carried into or out of the fuselage, the lamp door 3 is first opened, and then the auxiliary lamp 4 is opened.
[0044]
As shown in FIG. 2A, since the lamp door 3 needs to secure a predetermined step 6 above the auxiliary lamp 4 in the deployed state at the lower position, the lamp door 3 has a thickness of a predetermined step 6 with respect to the auxiliary lamp 4. A large dimension is formed. In addition, a mount 10 that is a connecting member that is connected to the auxiliary lamp 4 is formed therein.
[0045]
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. Therefore, in this state, a predetermined step 6 is formed at the connecting portion with the lamp door 3. In addition, a contact surface 24 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 contact surface 24 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 transport surface 14 and the like in combination with the deployment angle being slightly inclined downward with respect to the ramp door 3. ((B) of FIG. 2).
[0046]
A pair of end hinges 21 protrude from the base end portion of the auxiliary lamp 4. The end hinge 21 is detachably connected to the base end portion of the auxiliary lamp 4 via a pin 29.
[0047]
The end hinge 21 is connected to the mount 10 via the tension link 11. Therefore, the pin 8 for coupling to the tension link 11 protrudes from the end hinge 21.
[0048]
A connecting rod 22 is directly connected between the pair of end hinges 21, and a rod tip portion of the hydraulic cylinder 9 is rotatably coupled to a central portion of the connecting rod 22. On the other hand, the base end portion of the hydraulic cylinder 9 is rotatably coupled to the lamp door 3 by a pin 23. Therefore, the auxiliary lamp 4 is expanded and stored with respect to the lamp door 3 with the pin 8 as a fulcrum by the expansion and contraction of the hydraulic cylinder 9.
[0049]
A guide roller 15 is further attached to the end hinge 21. The guide roller 15 is attached so as to be positioned just below the pin 8 for connecting the tension link 11. The guide roller 15 will be described later.
[0050]
According to the present embodiment, the end hinge 21 and the auxiliary lamp 4 are coupled via the pin 29, and the auxiliary lamp 4 can be detached from the end hinge 21 by pulling out the pin 29. However, the present invention is not limited to this, and the end hinge 21 and the auxiliary lamp 4 may be integrally formed.
[0051]
Further, in the present embodiment, the hydraulic cylinder 9 is used for deploying and storing the auxiliary lamp 4. However, the present invention is not limited thereto, and for example, an actuator such as pneumatic driving or electromagnetic driving may be used. .
[0052]
The tension link 11 is a link for connecting the end hinge 21 and the mount 10, and has one end connected to the mount 10 (which is rotatably connected by a pin 13) and the other end connected to the end hinge 21 (by a pin 8). Are coupled to each other). Accordingly, when the tension link 11 is moved up and down around the pin 13, the vertical position of the end hinge 21 is switched, and when the end hinge 21 is rotated around the pin 8, the auxiliary lamp 4 is deployed and stored.
[0053]
The mount 10 integrally coupled to the lamp door 3 corresponds to the end hinge 21. For example, when there are four auxiliary lamps 4 as shown in the prior art in FIG. Since each of the two end hinges 21 is attached and there are eight end hinges 21 as a whole, the number of mounts 10 is correspondingly eight. Conversely, when the number of auxiliary lamps 4 is one, the number of mounts is two.
[0054]
As shown in FIGS. 2 and 3, the mount 10 has a plate shape having a height substantially equal to the thickness of the lamp door, and is integrally coupled in the cavity at the tip of the lamp door 3. Therefore, the upper surface of the mount 10 is coupled to the upper plate 3a of the lamp door 3 or its reinforcing member, and the lower surface of the mount 10 is coupled to the bottom plate of the lamp door 3 or its reinforcing member.
[0055]
FIG. 4A is a side view of the mount 10. According to the figure, the tip portion of the mount 10 (auxiliary lamp 4 side) has a rectangular shape with the lowest height, and the height dimension of the mount 10 (lamp lamp) in order from the tip side slightly rearward from the tip portion. The first projection 33 and the second projection 34 are lower than the thickness of the door 3. Further, the height of the projection of the second projection 34 is higher than that of the first projection 33. The rectangular portion at the front of the first protrusion 33, that is, the tip of the mount 10 constitutes an auxiliary lamp support portion 38, and the guide roller 15 attached to the end hinge 21 is between the first protrusion 33 and the second protrusion 34. Constitutes a guide groove 28 that rolls in the vertical direction. A stopper 25 that protrudes toward the auxiliary lamp 4 is built in a stopper portion 35 behind the second protrusion 34 and facing the second protrusion 34. A spring 26 for causing the stopper 25 to protrude toward the auxiliary lamp 4 is incorporated in the stopper 25. The stopper 25 has a convex shape with an inclination from below to above.
[0056]
The auxiliary lamp support portion 38 has a support surface 30 that is the upper surface thereof formed substantially parallel to the upper surface of the lamp door 3 and constitutes the reaction force receiving portion 19 on the vertical surface at the tip. Moreover, the corner | angular part of the support surface 30 and the reaction force receiving part 19 is cut by the inclination. This inclined portion is referred to as a third guide surface 18.
The surface of the first protrusion 33 that faces the second protrusion 34 is referred to as the first guide surface 16, and the surface of the second protrusion that faces the first guide surface is referred to as the second guide surface 17.
[0057]
In this embodiment, the tension links 11 are provided in two pairs so as to sandwich the mount 10 and the end hinge 21, and a stopper piece 27 is fitted between the two pairs of tension links 11. When the tension link 11 rotates upward, the stopper piece 27 is configured to come into contact with the stopper 25 provided on the mount 10 and protruding toward the auxiliary lamp 4 from below. The protruding portion of the stopper 25 has a convex shape with an inclination from the bottom to the top, and contracts with respect to the pressing force from the bottom by the stopper piece 27 above a certain level. When the stopper piece 27 pushes away the stopper 25 and rises, the stopper piece 27 is locked by the stopper 25, and the lowering of the stopper link 27, that is, the tension link 11 with which the stopper piece 27 is fitted, is restricted here. The stopper 25 and the stopper piece 27 are provided so that the position where the stopper piece 27 is locked becomes the position of the end hinge 21 in the developed state of the upper position.
[0058]
In the lower position deployed state, the guide roller 15 attached to the end hinge 21 is adapted to engage with the deepest portion of the guide groove 28 provided in the mount 10. As the tension link 11 is raised, the guide roller 15 is also raised while being guided by the guide groove 28. Accordingly, when the hydraulic cylinder 9 is extended in the lower position deployed state, the driving force of the hydraulic cylinder 9 appears as a force that moves the guide roller 21 upward along the guide groove 28.
[0059]
Thus, when the guide roller 15 is raised, the end hinge 21 is also raised accordingly, and the auxiliary lamp 4 reaches the upper position deployed state. The auxiliary lamp 4 that has reached the upper position deployed state is fixed at this position without being lowered by the stopper piece 27 being restricted by the stopper 25.
[0060]
In addition, the tension link 11 restricted by the stopper 25 in the upper position deployed state is configured such that the tip portion thereof comes into contact with the upper plate 3 a of the lamp door 3. This is because the tension link 11 (end hinge 21) is prevented from further rotating upward when the upper position is developed, and the hydraulic cylinder 9 is further extended at this position to restrict the tension. This is because the auxiliary lamp 4 can be stored with the pin 8 pivotably supported by the end of the link 11, that is, the end hinge 21, as a fulcrum. Therefore, when the auxiliary lamp 4 is to be stored, particularly when the auxiliary lamp 4 is to be stored from the lower position deployed state, the hydraulic cylinder 9 is first extended to the upper position deployed state, and the hydraulic cylinder 9 is further expanded. Thus, the auxiliary lamp 4 is stored with the pin 8 as a fulcrum. That is, when storing the auxiliary lamp 4 from the lower position deployed state, it is stored after passing through the upper position deployed state. Thus, the lamp device according to the present invention has the advantage that the vertical position of the auxiliary lamp 4 with respect to the lamp door 3 can be switched and the auxiliary lamp 4 can be deployed and stored continuously in a series of operations.
[0061]
By the way, when switching from the upper position deployed state to the lower position deployed state contrary to the above, the stopper is manually released (of course, the stopper 25 may be automatically released using an actuator or the like), and then hydraulically. The cylinder 9 may be contracted.
[0062]
As shown in FIG. 2 and FIG. 4B, a recessed portion 36 processed into an inverted L shape is formed below the base end portion of the auxiliary lamp 4. The recessed portion 36 comes into contact with the auxiliary lamp support portion 38 in the lower position deployed state. More specifically, the upper surface 31 of the recess 36 is the support surface 30 of the auxiliary lamp support 38 and the side surface 7 of the recess 36 is the auxiliary lamp. Supporting part The 38 reaction force receiving portions 19 come into contact with each other.
[0063]
This is due to the fact that when the auxiliary lamp 4 is used for cargo handling in the deployed state at the lower position, the downward movement of the auxiliary lamp 4 and the clockwise rotation due to the weight of the auxiliary lamp 4 and the loaded weight must be restricted. Therefore, by supporting the upper surface 31 (formed substantially parallel to the cargo transport surface 14) of the concave portion 36 of the auxiliary lamp 4 with the support surface 30 of the auxiliary lamp support portion 38, the downward movement of the auxiliary lamp 4 is restricted. In the case where the clockwise rotation of the auxiliary lamp 4 is restricted only by support in the vertical direction, the couple is generally large, and it is necessary to take measures such as increasing the weight of the lamp door 3 to cope with this. In addition to the vertical support, the reaction force receiving portion 19 and the side surface 7 of the concave portion 36 of the auxiliary lamp 4 are configured to come into contact with each other when the auxiliary lamp 4 is deployed. By doing so, the force F1 acts in the direction in which the reaction force receiving portion 19 pushes the side surface 7 at the time of contact. On the other hand, since the tension link 11 generates a force F2 that pulls the auxiliary lamp 4 toward the mount 10 at this time, the rotation of the auxiliary lamp 4 in the clockwise direction is restricted by the couple acting in the horizontal direction. By generating the pushing force F1 and the tensile force F2 that generate the couple force in the mount 10 and the auxiliary lamp 4, the internal force of the mount 10 can be easily dealt with without increasing the weight of the lamp door 3 itself. be able to.
[0064]
The third guide surface 18 corresponding to the intersection of the support surface 30 of the auxiliary lamp support portion 38 and the reaction force receiving portion 19 will be described. The third guide surface 18 moves up and down between the vertical position of the auxiliary lamp 4 and the lamp door 3. In this process, the corner portion 37 is provided so as to be able to move up and down along the third guide surface 18 and plays a role of guiding the corner portion 37.
[0065]
With the above configuration, in the lamp device according to the present invention, the vertical position of the auxiliary lamp 4 with respect to the lamp door 3 can be easily and smoothly switched, and the auxiliary lamp 4 is securely fixed at the upper position and the lower position, respectively. It is characterized in that a mechanism is provided.
[0066]
The above is the configuration of the lamp device according to the present invention. Next, the operation thereof will be described.
[0067]
First, the retracting and unfolding operations of the auxiliary lamp 4 will be described based on FIG. 2B. When the auxiliary lamp 4 is in the retracted state (FIG. 2B), the hydraulic cylinder 9 is in the extended state. The end portion of the tension link 11 on the end hinge 21 abuts against the upper plate 3 a of the lamp door 3, and the stopper piece 27 is regulated by the stopper 25. When the auxiliary lamp 4 is rotated from this state to the unfolded state, the hydraulic cylinder 9 is contracted. Then, since the downward rotation of the tension link 11 is restricted by the stopper 25, the auxiliary lamp rotates clockwise with the pin 8 as a fulcrum. The rotation is performed until the contact surface 24 contacts the ground. When the auxiliary lamp 4 is changed from the unfolded state to the retracted state, an operation reverse to the above operation may be performed. That is, the auxiliary ramp 4 is in the upper position deployed state due to the contraction of the hydraulic cylinder 9, but if the hydraulic cylinder 9 is extended from this state, the tension link 11 still remains on the stopper 25 and the upper plate 3a of the ramp door 3. Since it is regulated, the auxiliary lamp 4 rotates around the pin 8 as a fulcrum and enters a retracted state.
[0068]
Next, the operation when the vertical position of the auxiliary lamp 4 is switched from the lower position deployed state to the upper position deployed state will be described with reference to FIG.
[0069]
(1) in FIG. 5 shows a case where the auxiliary lamp 4 is in the lower position developed state. At this time, the auxiliary lamp 4 receives a clockwise rotational moment (hereinafter referred to as M1) around the pin 8 due to its own weight, but the tension link 11 and the reaction force receiving portion. 19 It keeps the horizontal state due to the balance of power.
[0070]
When the hydraulic cylinder 9 is extended in this state, the auxiliary lamp 4 receives a counterclockwise rotational moment (hereinafter referred to as M2) around the pin 8 this time. When the rotational moment M2 exceeds M1, the guide roller 15 moves until it contacts the first guide surface 16, and a gap is formed between the side surface 7 of the recess and the reaction force receiving portion 19 ((2) in the figure). ). When the hydraulic cylinder 9 is further extended, the auxiliary ramp 4 is restricted to the guide roller 15 and the corner portion 37 of the inverted L-shaped recess 36 of the auxiliary ramp (the corner portion 37 rises without being guided by the third guide surface 18). It rises further while being. Since the tip of the auxiliary lamp 4 slowly descends during the ascent, the guide roller 15 moves to the second guide surface 17 side, and this time it rises while being regulated by the second guide surface 17 ((3) in the figure). ).
[0071]
By the way, regardless of the regulation by the guide roller 15 and the second guide surface 17 as in this embodiment, for example, the third guide surface 18 is extended upward and only by the regulation by the corner portion 37 and the third guide surface 18. Good. Further, a guide roller or the like may be used instead of the third portion guide surface 18 or the corner portion 37, or another sliding member or the like may be used instead of the guide roller 15.
[0072]
If the tension link 11 contacts the upper plate 3a of the lamp door 3 while the auxiliary lamp 4 is lowered, the upward movement of the auxiliary lamp 4 is restricted. At this time, the stopper piece 27 is hooked on the stopper 25, and the downward movement of the tension link 11 and the auxiliary lamp 4 is simultaneously restricted, and the upper position is developed ((4) in the figure).
[0073]
When the hydraulic cylinder 9 is further extended in the upper position deployed state, the auxiliary lamp 4 rotates counterclockwise around the pin 8 of the restrained tension link 11 and moves toward the retracted state.
[0074]
When the auxiliary lamp 4 is switched from the upper position deployed state to the lower position deployed state, the stopper 25 is automatically released manually or by using an actuator or the like in the upper position deployed state, and the operation reverse to the above can be repeated. That's fine.
[0075]
【The invention's effect】
According to the present invention, the auxiliary lamp is positioned with respect to the lamp door with the tension link and can be automatically operated by driving the hydraulic cylinder, so that the vertical position of the auxiliary lamp can be switched in a short time. Thus, it is not necessary to put the auxiliary lamps in the retracted state or remove them one by one.
[0076]
Further, in the deployed state of the upper position, the lowering of the tension link is regulated by the stopper, and the upward rotation is also regulated by the upper plate of the lamp door, so that the auxiliary lamp can be stored as it is by further extending the actuator. The transition from the lower position deployment state to the upper position deployment state and the transition to the storage state can be performed continuously and smoothly.
[0077]
Furthermore, the upper surface and the side surface of the inverted L-shaped concave portion provided on the back surface of the base end portion of the auxiliary lamp are in contact with the support surface and reaction force receiving portion of the auxiliary lamp support portion in the lower position deployed state. Since the link pulls the auxiliary lamp with a constant tension in the mounting direction, the lowering and rotation of the auxiliary lamp in the lower position deployed state can be reliably suppressed together.
[0078]
In addition, when performing the operation from the lower position deployed state to the upper position deployed state or vice versa, the guide roller moves up and down while being guided by the guide groove and the corner portion by the third guide surface. Position switching is performed reliably.
[0079]
In the present invention, since the auxiliary lamp and the end hinge are detachably connected via the pin, the auxiliary lamp can be detached from the end hinge, and the mounted object can be dropped in the air.
[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 a perspective view of a lamp device showing an embodiment of the present invention.
4A is a side view of a lamp device showing an embodiment of the present invention, and FIG. 4B is a side view showing a recessed portion below a base end portion of an auxiliary lamp.
FIG. 5 is an explanatory view showing the operation of switching the vertical position of the auxiliary lamp with respect to the lamp door in the lamp device showing the embodiment of the present invention.
6A is a side view of a rear part of an aircraft body such as a cargo carrier, and FIG. 6B is a side view showing a lamp door and an auxiliary lamp.
FIG. 7 is a perspective view of a conventional lamp device.
FIG. 8 is a side view showing a lower position developed state of a conventional lamp device.
FIGS. 9A and 9B are side views showing a conventional lamp device in which the upper position is developed and FIG. 9B is a lower position developed state.
[Explanation of symbols]
3 Lamp door
3a Lamp door upper plate
4 Auxiliary lamp
6 Level difference between the upper surface of the ramp door and the cargo transportation in the lower position deployed state
8 pins
7 concave side
9 Hydraulic cylinder (actuator)
10 mount
11 Tension link
14 Cargo transportation surface
15 Guide roller
16 First guide surface
17 Second guide surface
18 Third guide surface
19 Reaction force receiver
21 End hinge
25 Stopper
27 Stopper piece
28 Guide groove
30 Support surface
31 Top surface of recess
33 First protrusion
34 Second protrusion
35 Stopper
36 recess
37 corners
38 Auxiliary lamp support

Claims (11)

In 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 distal end portion of the lamp door. A tension link that is movably mounted and the other end of which is also rotatably mounted on the base end of the auxiliary lamp, and the base end of the auxiliary lamp is rotated around one end of the tension link. wherein together is switched vertical position relative to the lamp door of the proximal end portion of the auxiliary lamp, expand the auxiliary lamp by rotating around the other end of the tension link, and configured to store, the base end portion by An actuator that is rotatably attached to the lamp door and has a tip end rotatably attached to a base end portion of the auxiliary lamp; The base end of the auxiliary lamp is switched in the vertical direction with respect to the lamp door by the expansion and contraction of the tension link, and the auxiliary lamp is centered on the other end of the tension link. It is configured to expand and store, and is a base end portion of the auxiliary lamp, and includes an end hinge that protrudes toward the lamp door, a tip end portion of the lamp door, and a mount that is paired with the end hinge, The end hinge has a pin for coupling the other end of the tension link, and a pin and a guide roller for coupling to the tip of the actuator at a position below the coupling portion with the tension link, The mount has a guide groove that allows the guide roller to roll in the vertical direction, so that the auxiliary lamp is in a deployed state at the lower position. The guide roller engages with the deepest portion of the guide groove, and as the actuator extends, the guide roller rises while being guided by the guide groove, and the auxiliary ramp is in the upper position deployed state. The guide roller is positioned at the uppermost part of the guide groove so that the vertical position of the base end portion of the auxiliary lamp with respect to the lamp door is switched, and the auxiliary lamp is in a lower position deployed state. A lamp device comprising a cargo transport surface that is substantially parallel to the upper surface of the lamp door with a step . A stopper projecting toward the auxiliary lamp side and provided on the mount; and a stopper piece provided at the rear of the tension link but at the tip end of the tension link, the tension link serving as a fulcrum As the stopper piece comes into contact with the stopper from below, the stopper piece pushes the stopper upward and eventually rises. a state, unless released after the stopper, lamp device according to claim 1, characterized in that it has a structure for restricting the downward movement of the tension link. 3. The lamp according to claim 1, wherein the tension link is configured to regulate upward rotation of the tension link when the tension link comes into contact with an upper plate of the lamp door in the upper position deployed state. apparatus. A pair of end hinges protruding from the base end portion of the auxiliary lamp to the lamp door side, and a number of mounts corresponding to the end hinges at the front end portion of the lamp door, and between the pair of end hinges The lamp device according to any one of claims 1 to 3 , wherein a connecting rod coupled to a tip of the actuator is directly connected to the lamp device. Projecting portion of the stopper has a convex shape having a slope toward the bottom to the top, moreover, one of claims 2 4, characterized in that a spring for protruding the protruding portion to the stopper A lamp device according to any one of the above. The tension link, the mount and the provided two pairs so as to sandwich an end hinge, to any one of claims 2 to 5, characterized in that fitted the stopper piece between the two pairs of tension link Lamp device described in one. The mount has a plate shape, a rectangular portion having a low height at the tip of the mount is used as an auxiliary lamp support portion, and first and second protrusions are provided behind the auxiliary lamp support portion. A guide groove is formed between the projection and the projection, and the auxiliary lamp is connected to the lamp door from an inverted L-shaped concave portion provided on the rear surface of the cargo conveying surface, which is a base end portion of the auxiliary lamp. In contrast, when the lower lamp is deployed, the support surface of the auxiliary lamp support portion supports the upper surface of the recess, thereby restricting the auxiliary lamp from rotating further downward from the horizontal state. The lamp device according to any one of claims 1 to 6 , wherein: The auxiliary lamp support portion includes a reaction force receiving portion having a surface perpendicular to the upper surface and a side surface having a surface perpendicular to the upper surface of the recess, and the auxiliary lamp is the lamp door. claim 7 if it becomes lower position deployed state, wherein by the reaction force receiving portion and said side surface is configured to contact, characterized in that it restricts the rotation of the auxiliary lamp against Lamp device. The reaction force receiving portion and the side surface are located when the reaction lamp receiving portion and the side surface having a surface perpendicular to the upper surface of the concave portion are in a deployed state with respect to the lamp door. 9. The structure according to claim 8 , wherein the rotation of the auxiliary lamp is restricted by providing the tension link with a tensile force by which the auxiliary lamp is pulled in the mounting direction. A lamp device according to claim 1. A process of providing a third guide surface, which is an inclined portion obtained by cutting the corner portion between the upper surface and the side surface of the auxiliary lamp support portion, and switching the auxiliary lamp from the lower position deployed state to the upper position deployed state or vice versa. in, in any one of claims 7 9, characterized in that the corner hits by a point of intersection between the upper surface and the side surface of the recess of the auxiliary lamp is configured to lift while being guided by the third guide surface The lamp device as described. The lamp device according to any one of claims 1 to 10 , wherein the auxiliary lamp and the end hinge are detachably connected via a pin.

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