JP3900461B2 - Opening and closing mechanism of the door on the vehicle mounting pallet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an opening / closing mechanism for an opening / closing door that opens and closes an opening formed on a pallet for mounting a vehicle.
[0002]
[Prior art]
In an automobile assembly line or the like, the vehicle body may be transferred to a plurality of conveyors corresponding to the assembly parts, the assembly location of the vehicle body, and the like. For example, when assembling lower parts such as a suspension on the vehicle body, an overhead conveyor or the like that suspends and conveys the vehicle body is used, and when assembling a door or a seat on the vehicle body, for example, the vehicle is placed on a pallet. In many cases, a conveyer (pallet conveyer) or the like is used.
[0003]
[Problems to be solved by the invention]
When the vehicle is transferred from the overhead conveyor to the pallet conveyor, that is, when the vehicle is lowered and placed on the pallet of the pallet conveyor, the pallet is supported while supporting the bottom of the vehicle body to minimize the impact on the vehicle body. A transfer method in which a vehicle tire is mounted thereon is desirable. As an example of the method, an opening that penetrates the pallet in the vertical direction is provided, and a vehicle body support that supports the bottom of the vehicle body is provided below the pallet so as to be able to go up and down so as to penetrate the opening. A vehicle body support device is provided, and the vehicle body support portion is raised to support the weight of the bottom portion of the vehicle body, and then the vehicle body support portion is lowered to place the vehicle tire on the pallet. In this case, the opening may be provided with an open / close door that normally closes the opening for the purpose of ensuring the safety of an operator working on the pallet when the vehicle is not placed. desirable.
[0004]
The present invention relates to an opening / closing mechanism for an opening / closing door provided in the pallet, and has an opening / closing mechanism for an opening / closing door in a vehicle-mounted pallet that has a simple structure with a small number of members and can construct an economical pallet. It is intended to provide.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has an opening that penetrates in the vertical direction, and an opening / closing door that is formed of a pair of double- opening doors that rotate around a support shaft to open and close the opening . A vehicle mounting pallet for mounting the vehicle, and a vehicle body support device that is provided below the vehicle mounting pallet and that is configured so that a vehicle body support portion that supports the bottom of the vehicle body passes through the opening and can be raised and lowered. The vehicle body support portion is provided with a substrate portion erected along the front edge or the rear edge of the opening portion, and right and left edge portions of the substrate portion so as to be orthogonal to the surface of the substrate portion. An open / close frame having a pair of standing guide plate portions and a pair of inclined portions formed in an inclined shape so that the guide plate portions gradually approach each other in the upward direction at the upper portion of the guide plate portion is fixed. A guide roller is rotatably provided on the lower surface of the door. When the vehicle body support portion is raised, the inclined portion and the guide plate portion come into contact with the guide roller, the inclined portion pushes the opening / closing door upward, and the guide plate portion opens the opening / closing door. An open / close mechanism for the open / close door in the vehicle mounting pallet is characterized in that the open / closed state is maintained. With this configuration, an opening / closing mechanism having a simple structure with a small number of members can be realized, so that the assembly work of the pallet and the opening / closing mechanism is facilitated, and an economical pallet can be constructed. In addition, with this configuration, a vehicle transfer process or the like to the vehicle mounting pallet can be constructed with a simple opening / closing mechanism.
[0006]
Furthermore, it was set as the structure provided with the urging means to urge in the direction which closes an opening-and-closing door. With this configuration, the opening / closing door can be reliably closed, and the reliability of the opening / closing mechanism is improved.
[0007]
Further, the support shaft is positioned below the upper surface portion of the vehicle placement pallet, and a part of the opening / closing door is located below the upper surface portion of the vehicle placement pallet when the door is opened. Configured. With this configuration, the height from the upper surface of the open / close door in the open state can be reduced, and interference with the bottom of the vehicle body can be prevented.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. 1 is a schematic plan view showing an opening / closing mechanism of an opening / closing door in a vehicle mounting pallet, FIG. 2 is a schematic side view thereof, FIG. 3 is a front view showing a schematic structure of a friction conveyor, FIGS. 5 (c) and 5 (d) are explanatory views showing a method of transferring a vehicle to a vehicle mounting pallet, FIG. 6 is an explanatory plan view showing an opening / closing mechanism of an opening / closing door in the vehicle mounting pallet, and FIG. FIG. 8 is an explanatory front view, and FIG. 9 is a schematic perspective view (some components are omitted or shown by phantom lines).
[0010]
1 to 3, a vehicle mounting pallet (hereinafter simply referred to as a pallet) 1 has a structure in which an upper surface portion 1a made of a striped steel plate or the like is stretched on an upper portion of a frame such as a steel material, and the upper surface portion 1a. The tire T of the vehicle body F is placed on the vehicle. The pallet 1 is used in an automobile assembly line or the like for assembling a four-wheel automobile, and is used as a part of a pallet conveyor (in this embodiment, a friction conveyor FC) by arranging a plurality of pallets in series. As shown in FIG. 3, each pallet 1 receives a frictional force on one side from a driving roller 62 that is rotationally driven by a motor 61 and guides to a plurality of guide rollers 63 on the other side, as shown in FIG. While being done, it moves on the transport rail R via the wheels 64. Reference numeral 65 (FIGS. 1 and 2) is a stopper for fixing the front tire T, and reference numeral 66 (FIG. 3) is a pallet fixing device for fixing the pallet 1 on the transport rail R when the vehicle body F is transferred. Indicates.
[0011]
An example of a method for transferring the vehicle to the pallet 1 is as follows. As shown in FIG. 4 (a), in the vehicle conveyed by the overhead conveyor OC, the drop lifter DL is raised and the tire T is placed at the portion of the tire support portion D1 (see FIG. 4 (b)). State), then, the locking portion of the overhead conveyor OC is released (state shown in FIG. 5C), and the drop lifter DL is lowered to a predetermined position. On the other hand, the vehicle body support device 21 described in detail later is driven to raise the vehicle body support portion 22, and the bottom portion of the vehicle body F that has been lowered by the vehicle body support portion 22 is supported. At this stage, the tire support D1 of the drop lifter DL is moved laterally to release the support of the tire T (the state shown in FIG. 5 (d)), the vehicle body support 22 is lowered, and the tire T is placed on the pallet 1. Place.
[0012]
As shown in FIGS. 1, 9, etc., the pallet 1 is formed with an opening 2 that penetrates in the vertical direction so as to pass the vehicle body support portion 22 of the vehicle body support device 21. When the vehicle is not placed, an opening / closing door 3 is normally provided to close the opening 2 for the purpose of ensuring the safety of the worker on the pallet 1. The present invention relates to an opening / closing mechanism for the opening / closing door 3, and includes a pallet having an opening 2 that penetrates in the vertical direction and an opening / closing door 3 that rotates about a support shaft 4 to open and close the opening 2. 1, a pressing means 42 that presses the lower surface side of the opening / closing door 3 and opens upward, and a holding means 43 that holds the opening / closing door 3 in an open state. In the present invention, the process of opening and closing the door 3 is not limited to the case where the vehicle body support device 21 is provided. For example, the opening and closing door 3 is opened and closed by the pressing means 42 and the holding means 43, May work through the opening 2.
[0013]
In the pallet 1, as shown in FIG. 1, when the vehicle is placed, the opening 2 has a total of four holes so as to be located closer to the rear of the tire T of each front wheel and closer to the front of the tire T of each rear wheel. Are formed in a rectangular shape in the upper surface portion 1a, and an opening / closing door 3 is provided in each. As can be seen from the drawing, the vehicle body support portion 22 (side sill support portion 22b) of the vehicle body support device 21 that will be described in detail later is slightly larger in the overall length direction of the vehicle on the rear wheel side than on the front wheel side. Accordingly, the opening 2 and the opening / closing door 3 positioned closer to the rear wheel are also larger in size than the opening 2 and the opening / closing door 3 closer to the front wheel in the full length direction of the vehicle. Except for this point, the configuration of each open / close door 3 is the same.
[0014]
As shown in FIGS. 8 and 9, the open / close door 3 in the present embodiment is configured to rotate around a support shaft 4 whose axial direction is the full length direction of the vehicle, and further, the opening 2 is separated from the center. Each of the doors 3a and 3a is a double door (a double door opening) around the support shaft 4. The door body 3a is made of the same material as that of the upper surface portion 1a, for example, a striped steel plate.
[0015]
As shown in FIGS. 6 and 7, steel materials 5 and 5 are fixed along the left-right direction on the lower surface of the upper surface portion 1 a at the front and rear edges of the opening 2, and between the front and rear steel materials 5 and 5. The brackets 6 and 6 made of steel are fixed as a pair of left and right as shown in FIGS. As can be seen from FIGS. 6 and 8, the positions of the brackets 6 and 6 in the left and right direction are closer to the center of the opening 2 than the left and right edges of the opening 2. Referring also to FIG. 9, the spindle stands 7 are fixed to the upper surface of each bracket 6 on the front and rear sides. As described above, each of the spindle stands 7 has the full length direction of the vehicle as the axial direction. The supporting shaft 4 is fixed. On the other hand, support brackets 8, 8 are fixed to the front and rear of the lower surface of each door 3 a, and the support bracket 8 is mounted so as to be rotatable with respect to the support shaft 4. The support shaft 4 may be fixed to the support bracket 8 side, or the support shaft 4 is rotatably mounted on both the support stand 7 and the support bracket 8. The shape and the mounting manner are not limited.
[0016]
With the above configuration, each door 3a is pivoted about the support shafts 4 and 4 via the support shaft brackets 8 and 8 to open and close. As shown in this embodiment, the open / close door 3 has a double-open structure, so that the height dimension L1 from the upper surface portion 1a of the open / close door 3 can be set to a single door structure in the fully opened state as shown by phantom lines in FIG. Compared with the case of the above, it can be made smaller, and interference with the bottom of the vehicle body F can be prevented. Further, as shown in the figure, when the support shaft 4 is positioned below the upper surface portion 1a and the door 3 is opened, a part of each door body 3a is positioned below the upper surface portion 1a. If it comprises, the said height dimension L1 can be made smaller.
[0017]
Reference numeral 9 shown in FIGS. 6, 7, and 9 denotes a stopper that holds each door 3 a in a state flush with the upper surface portion 1 a and restricts downward rotation. In this embodiment, bolts are used, and the brackets 10 and 10 fixed to the front and rear reinforcing steel materials 5 and 5 are screwed to stand upright. Each door body 3a comes into contact with the head of the bolt at the front and rear end portions of the lower surface thereof to be flush with the upper surface portion 1a, and the opening 2 is closed.
[0018]
Next, the vehicle body support device 21 will be described. As shown in FIG. 2, an underground pit P is formed below the friction conveyor FC. When each pallet 1 is intermittently positioned above the underground pit P, for example, from the overhead conveyor OC described above. The vehicle is transferred to the pallet 1. The vehicle body support device 21 is installed in the underground pit P.
[0019]
1 and 2, the vehicle body support device 21 is mainly composed of a plurality (four) of vehicle body support portions 22, drive portions 23, and bases 24 corresponding to the open / close doors 3. A drive unit 23 and a vehicle body support unit 22 are installed on a base 24 installed on the floor. The vehicle body support portion 22 includes a guide rod 22a provided vertically and a side sill support portion 22b fixed to the upper end of the guide rod 22a via a shaft portion 22c, and the bottom portion of the vehicle body F is formed by the side sill support portion 22b. The side sill of the weight is supported.
[0020]
As shown in FIGS. 6, 7, and 9, the side sill support portion 22 b is made of a steel plate material or the like having a rectangular shape in plan view, and a rubber material 25 is attached to the upper surface of the side sill support portion 22 b to protect the side sill of the vehicle body F. 1 and 2, the guide rod 22a is provided with a gear (not shown) that meshes with a final gear (not shown) of the drive unit 23, and the four guide rods 22a are connected to the drive unit 23. And a configuration in which the output shaft of the motor 23c of the drive unit 23 is driven to rotate in the forward and reverse directions so as to move up and down while maintaining the same height. It has become. When the guide rod 22a is in the lower position, the side sill support 22b is positioned directly below the open / close door 3 in a closed state.
[0021]
As shown in FIG. 7, a vehicle body seating sensor 27 is attached to the side sill support portion 22 b via a bracket 26. The vehicle seat sensor 27 is a sensor that detects the presence or absence of the vehicle body F before the side sill support portion 22b supports the vehicle body F, and is a load sensor (for example, a resistance strain type sensor) in this embodiment. The load receiving portion at the upper end of the vehicle seat sensor 27 (the rubber material 28 is also attached to this load receiving portion) is located above the upper surface of the side sill support portion 22b (rubber material 25), and the vehicle body F descends. In this case, before the weight is supported by the side sill support portion 22b, the load receiving portion receives a compressive load from the vehicle body F, so that the presence or absence of the vehicle body F is detected. The vehicle seat sensor 27 transmits a signal indicating whether or not the vehicle body F has been detected to a control device (not shown) of the vehicle body support device 21.
[0022]
Next, with reference to FIGS. 6 to 9, the pressing means 42 that presses the lower surface side of the opening / closing door 3 to open upward and the holding means 43 that holds the opening / closing door 3 in an open state will be described. In this embodiment, the open / close frame 45 is a member constituting the pressing means 42 and the holding means 43. The opening / closing frame 45 is fixed to the shaft portion 22c of the vehicle body support portion 22 via a bracket 44, and is provided with a substrate portion 45a erected along the front edge or the rear edge of the opening portion 2, and the left and right sides of the substrate portion 45a. The guide plate portions 45b and 45b that are erected and fixed to the edge so as to be orthogonal to the surface of the substrate portion 45a and the upper portions of the guide plate portions 45b and 45b are gradually brought closer to each other in the upward direction. Inclined portions 45 c and 45 c formed in a slanted shape, the inclined portions 45 c and 45 c constitute the pressing means 42, and the guide plate portions 45 b and 45 b constitute the holding means 43.
[0023]
The upper ends of the inclined portions 45 c and 45 c of the opening / closing frame 45 are substantially the same height as the upper surface of the side sill support portion 22 b of the vehicle body support device 21. On the other hand, on the open / close door 3 side, a guide roller 47 is rotatably mounted on the lower surface of each door body 3a via a bracket 46 so as to correspond to the inclined portion 45c and the guide plate portion 45b of the open / close frame 45. ing.
[0024]
With the above configuration, when the motor 23c of the drive unit 23 is driven and the open / close frame 45 is lifted together with the vehicle body support unit 22, the left and right inclined portions 45c are left and right with the doors 3a facing upward via the guide rollers 47. It will push open. The opening / closing door 3 can be smoothly opened and closed by interposing the rotatable guide roller 47. When the open / close frame 45 further passes through the opening 2 and rises, the guide roller 47 comes into contact with the vertical surface of the guide plate portion 45b, so that the door 3a is fully opened, and the open state is maintained. (State shown by phantom lines in FIG. 8).
[0025]
At this time, as shown in FIG. 8, in the state where each door body 3a is fully opened, if the center of gravity of each door body 3a is located on the left and right outer sides from the support shaft 4, respectively, the door body 3a is Even if the opening / closing frame 45 is lowered, the opening 2 is not returned to the original position and cannot be closed. Further, even when the door 3a is fully opened, the center of gravity is located on the inner side of the support shaft 4, and even when the door 3a is closed by its own weight when the opening / closing frame 45 is lowered, the impact is applied. There is a possibility that the door body 3a may open to the left and right outer sides for some reason such as receiving. For this reason, in this embodiment, the structure is provided with the urging means 48 that urges the opening / closing door 3 in the closing direction, so that the closing operation of the opening / closing door 3 is ensured. In this embodiment, a tension coil spring 49 is used as the biasing means 48, and the fasteners 50, 50 fixed to the lower surface of each door body 3a, and the fasteners 51, 51 fixed to the upper surface of each bracket 6 are provided. A pair of tension coil springs 49 are stretched between them.
[0026]
The opening / closing mechanism of the opening / closing door 3 is configured as described above. When the vehicle body support portion 22 and the opening / closing frame 45 are lifted, first, the portion of the inclined portion 45c comes into contact with the guide roller 47. The left and right door bodies 3 a are pushed upward through the guide rollers 47 against the urging force of the spring 49. That is, the open / close door 3 opens mechanically in conjunction with the ascending operation of the vehicle body support portion 22. The side sill support portion 22b of the vehicle body support portion 22 rises without interfering with the door body 3a that gradually opens. When the vehicle body support portion 22 and the opening / closing frame 45 are further lifted, the door body 3a falls to the left and right outer sides in a state where the guide roller 47 is pressed against the vertical surface of the guide plate portion 45b by the urging force of the tension coil spring 49. Without being opened, the open state is maintained at a predetermined inclination angle.
[0027]
Then, the vehicle body support 22 and the opening / closing frame 45 rise to a predetermined position and stand by. When the vehicle body F is lowered by the drop lifter DL (FIGS. 4 and 5), first, the vehicle seat sensor 27 The load receiving portion contacts the bottom of the vehicle body F, and the presence or absence of the vehicle body F is detected. Further, the load receiving portion is degenerated by the weight of the vehicle body F, and the vehicle body F is weight-supported by the side sill support portions 22b. Next, after moving the tire support portion D1 of the drop lifter DL in the lateral direction, the vehicle body support portion 22 and the opening / closing frame 45 are lowered. As the opening / closing frame 45 is lowered, the guide roller 47 is slidably moved while being pressed against the inclined portion 45c of the guide plate portion 45b by the urging force of the tension coil spring 49. Thereby, the door body 3a is gradually closed, and the tire T of the vehicle is placed on the upper surface portion 1a of the pallet 1 in the process of closing the door body 3a. Thus, the open / close door 3 is closed mechanically in conjunction with the lowering operation of the vehicle body support portion 22. When the vehicle body support portion 22 and the opening / closing frame 45 are fully lowered, the door body 3a comes into contact with the stopper 9 and is flush with the upper surface portion 1a to close the opening 2.
[0028]
As described above, the pallet 1 having the opening 2 that penetrates in the vertical direction, the opening / closing door 3 that rotates around the support shaft 4 to open and close the opening 2, and presses the lower surface side of the opening / closing door 3. If the opening / closing mechanism includes the pressing means 42 that opens upward and the holding means 43 that holds the open / close door 3 in an open state, the opening / closing mechanism has a simple structure with a small number of members. Assembling work of the mechanism becomes easy. Therefore, an economical pallet 1 can be constructed. In particular, when many pallets 1 are used like the friction conveyor FC, the economic merit is very effective.
[0029]
Furthermore, if it is set as the structure provided with the urging means 48 which urges | biases the opening / closing door 3 in the closing direction, the closing operation of the opening / closing door 3 will be performed reliably, and the reliability of an opening / closing mechanism will improve.
[0030]
Further, if the support shaft 4 is positioned below the upper surface portion 1a of the pallet 1 and the opening / closing door 3 is opened, a part of the opening / closing door 3 is positioned below the upper surface portion 1a. Since the height dimension L1 (FIG. 8) from the upper surface portion 1a of the open / close door 3 is reduced, interference with the bottom portion of the vehicle body F that is being lowered or placed on the pallet 1 can be prevented.
[0031]
Also, a vehicle body support device 21 is provided below the pallet 1 so that a vehicle body support portion 22 that supports the bottom of the vehicle body F passes through the opening 2 and can be moved up and down, and the pressing means 42 and the holding means 43 are supported by the vehicle body. By adopting a structure that is mechanically interlocked with the lifting / lowering operation of the portion 22, a vehicle transfer process or the like to the pallet 1 is realized with an opening / closing mechanism having a simple structure. In other words, since the door 3 can be opened and closed without using electrical components such as a motor and a rotary solenoid, in other words, without performing any electrical control, an extremely economical vehicle transfer process can be constructed. It becomes.
[0032]
The vehicle body support device 21 described above is not limited to the case where the vehicle is transferred onto the pallet 1 from the overhead conveyor OC or the like. For example, a vehicle already placed on the pallet 1 can be transferred to the pallet 1. It is also used when the pallet 1 is once lifted to accurately reposition it. As an example, first, each side sill support portion 22b is attached to the guide rod 22a so as to be movable in the horizontal direction and rotatable about a vertical axis. And the drive part 23 is driven, the opening-and-closing frame 45 and the vehicle body support part 22 are raised, the opening-and-closing door 3 is opened by the opening-and-closing frame 45, and the vehicle body F is moved to the position where the tire T is separated from the upper surface part 1a by the vehicle body support part 22. lift. At this stage, the vehicle body F is movable in the horizontal direction with respect to the pallet 1. Next, for example, by extending a positioning rod (not shown) disposed on the side of each tire T and pressing the side surface of each tire T in the horizontal direction at the tip of the rod, the side sill support portion The vehicle body F is moved together with 22b, and accurate positioning with respect to the pallet 1 is performed.
[0033]
Here, reference numeral 31 shown in FIG. 7 indicates a second vehicle body support device, and is fixed to the bracket 44. The vehicle body support device 31 includes a cylinder or the like, and a vehicle body support portion 31b that supports the bottom portion of the vehicle body F is attached to the upper end of the rod 31a so as not to rotate with respect to the rod 31a. A rubber material 32 is attached. When the rod 31a is retracted, the upper surface of the rubber member 32 is positioned below the upper surface of the rubber member 25 on the vehicle body support portion 22 side.
[0034]
Then, after the positioning of the vehicle body F, the rod 31a of the vehicle body support device 31 is extended, and the bottom portion of the vehicle body F is weight-supported by the vehicle body support portion 31b. As a result, the vehicle body F is weight-supported by both the side sill support portion 22b of the vehicle body support device 21 and the vehicle body support portion 31b of the second vehicle body support device 31. At this stage, the positioning rod disposed on the side of each tire T is retracted. Even at this time, the posture of the vehicle body F that is positioned by the frictional force with the vehicle body support portion 31b (rubber member 32) on the vehicle body support device 31 side is maintained as it is. Then, the vehicle is placed on the pallet 1 after the vehicle 23 is accurately positioned by driving the drive unit 23 in the reverse rotation to lower the vehicle body support 22 (and the vehicle body support device 31).
[0035]
The preferred embodiments of the present invention have been described above, but the number, shape, layout, etc. of each component are not limited to those described in the drawings, and can be changed as appropriate without departing from the spirit of the present invention.
[0036]
【The invention's effect】
According to the present invention, since the opening / closing mechanism has a simple structure with a small number of members, it is easy to assemble the pallet and the opening / closing mechanism, and an economical pallet can be constructed. Moreover, since the door can be opened and closed without performing any electrical control, an extremely economical vehicle transfer process or the like can be constructed.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing an opening / closing mechanism of an opening / closing door in a vehicle mounting pallet according to the present invention.
FIG. 2 is a schematic side view showing an opening / closing mechanism of an opening / closing door in the vehicle placement pallet according to the present invention.
FIG. 3 is a front view showing a schematic structure of a friction conveyor.
FIGS. 4A and 4B are explanatory views showing a method of transferring a vehicle to a vehicle mounting pallet. FIG.
FIGS. 5C and 5D are explanatory views showing a method of transferring a vehicle to a vehicle mounting pallet.
FIG. 6 is an explanatory plan view showing an opening / closing mechanism of an opening / closing door in a vehicle mounting pallet.
FIG. 7 is an explanatory side view showing an opening / closing mechanism of an opening / closing door in a vehicle mounting pallet.
FIG. 8 is a front explanatory view showing an opening / closing mechanism of an opening / closing door in a vehicle mounting pallet.
FIG. 9 is a schematic perspective view showing an opening / closing mechanism of an opening / closing door in a vehicle mounting pallet.
[Explanation of symbols]
F Car body T Tire 1 Vehicle mounting pallet 1a Upper surface part 2 Opening part 3 Opening / closing door 4 Support shaft 21 Car body support device 22 Car body support part 42 Pressing means 43 Holding means 45 Opening / closing frame 47 Guide roller 48 Energizing means 49 Tension coil spring

Claims (3)

A vehicle mounting pallet for mounting a vehicle, comprising: an opening penetrating in a vertical direction; and an opening / closing door formed of a pair of double- opening doors that rotate about a support shaft to open and close the opening. ,
A vehicle body support device that is provided below the vehicle mounting pallet and that is configured such that a vehicle body support portion that supports the bottom portion of the vehicle body passes through the opening and is freely movable up and down;
With
The vehicle body support portion is erected so as to be erected along the front edge or rear edge of the opening, and on the left and right edge portions of the substrate portion so as to be orthogonal to the surface of the substrate portion. An opening / closing frame having a pair of guide plate portions and a pair of inclined portions formed in an inclined shape so as to gradually approach each other as it goes upward in the upper portion of the guide plate portion,
A guide roller is rotatably mounted on the lower surface of the open / close door,
When the vehicle body support portion is lifted, the inclined portion and the guide plate portion are in contact with the guide roller, the inclined portion pushes and opens the open / close door upward, and the guide plate portion is in an open state of the open / close door. closing mechanism of the door in a vehicle mounted pallet, characterized in that to hold the.   The opening / closing mechanism of the opening / closing door in the vehicle mounting pallet according to claim 1, wherein the opening / closing door includes an urging unit that urges the opening / closing door in a closing direction.   The support shaft is positioned below the upper surface portion of the vehicle mounting pallet, and a part of the opening / closing door is positioned below the upper surface portion of the vehicle mounting pallet when the door is opened. The opening / closing mechanism of the opening / closing door in the vehicle mounting pallet of Claim 1 or Claim 2 characterized by the above-mentioned.

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