Door holding jig

Abstract

This invention provides a door-holding jig that allows for easy opening and closing of doors, even when the painting process is automated, without the need for a dedicated robot for removal. [Solution] This door holding jig 10 is a jig for holding a door 3 in a predetermined open and closed position relative to the vehicle body 2, and comprises a first magnet 31 that can be attached to one side of the vehicle body 2 and the door 3, and a receiving portion 22 that can be attached to the other side of the vehicle body 2 and the door 3, and which can come into contact with the first magnet 31 at a predetermined open and closed position when the door 3 is closed, and the receiving portion 22 is configured to come into contact with the first magnet 31 and be attracted by magnetic force.

Description

Technical Field

[0001] The present invention relates to a jig for holding a door, and particularly to a jig for holding a door in the manufacturing process of a vehicle.

Background Art

[0002] Conventionally, in the painting process of a vehicle, the opening and closing operations of the door were performed by an operator's hand. Also, in the state where the door was closed, a predetermined jig was attached to hold the closed state, and when opening the door, the operator removed the above-mentioned predetermined jig to open the door.

[0003] At this time, as a jig for holding the door in a closed state, for example, as described in Patent Document 1, a first contact portion that contacts the door, a second contact portion that contacts the body, and an urging portion that urges the first contact portion and the second contact portion to approach each other are integrally formed of a metal wire member, and a sandwiching member that can sandwich the body and the door in the direction in which the door closes is used. When using a sandwiching member having such a configuration, the jig was removed by deforming the sandwiching member (wire member) so as to separate the first contact portion and the second contact portion.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Incidentally, with the recent improvements in the performance of painting robots, it has become possible to paint parts that were previously painted manually using robots, and as a result, the full automation of the painting process is being considered. In this case, it is expected that the opening and closing of doors will also be performed by a dedicated robot instead of by human hands. However, since the robot for opening and closing doors is equipped with a mechanism for opening and closing doors, it does not have a mechanism for removing the jigs mentioned above. Furthermore, since the opening and closing of doors and the removal of the jigs mentioned above are different operations, in order to have a robot remove the jigs, it will be necessary to install a separate robot dedicated to jig removal in addition to the robot for opening and closing doors. However, in this type of manufacturing process, there is usually not much space around the process, so it is difficult to install a new robot, and even if it could be installed, the installation cost may be an obstacle to its introduction.

[0006] In view of the above circumstances, this specification aims to provide a door-holding jig that enables easy opening and closing of the door without the need for a dedicated robot for removal, even when the painting process is automated. [Means for solving the problem]

[0007] The aforementioned problem is solved by the door holding jig according to the present invention. Specifically, this jig is for holding a door in a predetermined open and closed position relative to the vehicle body, and is characterized by comprising a first magnet that can be attached to one side of the vehicle body and the door, and a receiving portion that can be attached to the other side of the vehicle body and the door, and which can come into contact with the first magnet at a predetermined open and closed position when the door is closed, and the receiving portion is configured to come into contact with the first magnet and be attracted by magnetic force.

[0008] As described above, the door holding jig according to the present invention allows a first magnet to be attached to one side of the vehicle body or the door, and a receiving part that can contact the first magnet at a predetermined open / closed position of the door and be attracted by magnetic force to be attached to the other side. Therefore, the door can be fixed to the vehicle body at the predetermined open / closed position to be held. Furthermore, since the first magnet and the receiving part can be brought into contact at the predetermined open / closed position by the closing operation of the door, the door can be automatically fixed to the vehicle body by magnetic force by closing the door toward this open / closed position, and the fixed state (magnetic attraction state) between the door and the vehicle body can be automatically released by opening the door from this open / closed position. Therefore, it is possible to repeatedly perform the opening and closing operation of the door while the door holding jig remains attached to the door and the vehicle body, without the need for a dedicated robot to remove the jig.

[0009] Furthermore, the door-holding jig according to the present invention may further include a receiving portion that can be attached to the vehicle body side, a first magnet that can be attached to the door side, a second magnet that is connected and fixed to the first magnet via a connecting portion and can be attracted to the door by magnetic force, and a locking portion that can lock the second magnet to the door.

[0010] As described above, by configuring the door-holding jig, when a force sufficient to release the magnetic attraction of the receiving part to the first magnet is applied to the door, the locking part can hold the second magnet and the first magnet connected to the second magnet to the door. Therefore, it becomes possible to select and use a magnet capable of exerting the magnetic force necessary to hold the door without worrying about the first magnet falling off the door. Furthermore, since the first and second magnets are merely attached to the door by the locking part, they can be easily removed from the door by releasing the lock. In addition, by further providing a second magnet that can be attracted to the door by magnetic force, and making this second magnet holdable to the door by the locking part, even if the door-side jig (first magnet, second magnet, and locking part) shifts relative to the door when the door is opened and the first magnet is pulled away from the receiving part, the second magnet will be attracted to the door, returning the second magnet and the first magnet connected to the second magnet to their original position (the position before the shift) relative to the door. Therefore, when the door is closed again, the first magnet can be brought into contact with the receiving part in the same position and orientation as before, thereby enabling a constant holding force to be continuously exerted.

[0011] Furthermore, in the door-holding jig according to the present invention, the magnetic force of the second magnet may be set to be smaller than the magnetic force of the first magnet.

[0012] The magnetic force of a magnet (of course, the magnet referred to here is a magnetized magnetic material) depends not only on the material but also on the size of the magnet. Therefore, by setting the magnetic force of the second magnet to be relatively small, the size of the second magnet can be reduced. When attaching the second magnet to the door, depending on the size of the magnet, the attachment position on the door may be unnecessarily restricted, but as mentioned above, if the size of the magnet can be reduced, this problem will not occur. Of course, since the first and second magnets can be held to the door by the locking part, there is no problem even if the magnetic force of the second magnet is small. As described above, with this configuration, the jig according to the present invention can be attached to various types of doors, and in turn, the versatility of the jig according to the present invention can be increased.

[0013] Furthermore, in the door-holding jig according to the present invention, the connecting portion may be axial in shape and extend to a position where it penetrates the second magnet, and the locking portion may be a spiral projection that can be screwed into the door, provided on the side of the connecting portion opposite to the first magnet when viewed from the position where the second magnet is attached.

[0014] By providing a spiral projection as a locking part at a predetermined position on the axial connecting part, the connecting part can be mechanically fixed to the door by, for example, screwing the spiral projection into a hole provided in the door. Alternatively, by screwing the spiral projection in until it is on the opposite side of the door from the second magnet, the spiral projection can be made to function as a retainer. In either case, it is possible to reliably prevent the door-holding jig from falling off the door when the door is opened or closed. [Effects of the Invention]

[0015] As described above, the door holding jig according to the present invention makes it possible to provide a door holding jig that allows for easy opening and closing of the door, even when the painting process is automated, without the need for a dedicated robot for removal. [Brief explanation of the drawing]

[0016] [Figure 1] This is a perspective view showing a manner of use of a door-holding jig according to one embodiment of the present invention, and is a perspective view showing the door-side jig and the vehicle-body-side jig that constitute the door-holding jig attached to the open door and the vehicle body. [Figure 2] Figure 1 is a perspective view of the vehicle body-side jig that constitutes the door-holding jig. [Figure 3] Figure 1 is a perspective view of the door-side jig that constitutes the door-holding jig. [Figure 4] Figure 1 is a front view of the door-side jig. [Figure 5] Figure 1 is a partial cross-sectional view showing the door-side jig attached to the door. [Figure 6]In the usage mode shown in FIG. 1, it is an enlarged perspective view of the main part showing the state where the door is held at a predetermined opening / closing position. [Figure 7] It is a view seen from the vehicle longitudinal direction of the contact mode between the door-side jig and the vehicle-body-side jig in the state shown in FIG. 6.

Embodiments for Carrying Out the Invention

[0017] Hereinafter, the content of the door holding jig according to an embodiment of the present invention will be described based on the drawings.

[0018] FIG. 1 shows an example of the usage mode of the door holding jig 10 according to an embodiment of the present invention. That is, in the present embodiment, the door holding jig 10 is configured to hold the front door 3, which is a swing door, at a predetermined opening / closing position with respect to the vehicle body 2 of the vehicle 1, and includes a vehicle-body-side jig 20 attached to the side of the vehicle body 2 and a door-side jig 30 attached to the side of the front door 3.

[0019] Among these, as shown in FIG. 2, the vehicle-body-side jig 20 has an attachment portion 21 to the vehicle body 2 and a receiving portion 22 connected and fixed to the attachment portion 21. In the present embodiment, the attachment portion 21 is integrally formed with the receiving portion 22, and by engaging the attachment portion 21 with a predetermined portion of the vehicle body 2 (here, hooking downward), the receiving portion 22 can be arranged at a predetermined position of the vehicle body 2. In FIG. 1, the positioning of the receiving portion 22 is performed so that the receiving portion 22 of the vehicle-body-side jig 20 and the first magnet 31 of the door-side jig 30 abut in the door opening 2a of the vehicle body 2 blocked by the front door 3. In this case, the receiving surface 23 provided on the receiving portion 22 is configured to be in a predetermined posture (for example, a flat receiving surface 23 is in a vertical direction and parallel to the vehicle longitudinal direction as shown in FIG. 7) in the state where the vehicle-body-side jig 20 is attached to a predetermined position of the vehicle body 2 via the attachment portion 21.

[0020] As shown in FIGS. 3 and 4, the door-side jig 30 includes at least a first magnet 31. In the present embodiment, the door-side jig 30 further includes a second magnet 32, a connecting portion 33, and a locking portion 34.

[0021] The first magnet 31 is attached to the front door 3 at a predetermined position and is configured to be able to abut against the receiving portion 22 at a predetermined opening / closing position by the closing operation of the front door 3. In the present embodiment, as shown in FIG. 3, the first magnet 31 has a disk shape, and its axial end face 31a can be brought into surface contact with the receiving surface 23 of the receiving portion 22. At this time, more preferably, the position and orientation of the first magnet 31 and the receiving portion 22 are determined so that the axial end face 31a and the receiving surface 23 abut in a parallel state with each other.

[0022] The first magnet 31 can have an arbitrary material, structure, and size (mainly the contact area with the receiving surface 23) as long as it can exhibit a magnetic force capable of attracting the receiving portion 22 by the magnetic force and holding the front door 3 to the vehicle body 2. Of course, in view of the fact that the door holding jig 10 (door-side jig 30) according to the present embodiment is used in the painting process, it is preferable that it is excellent in corrosion resistance, heat resistance, and strength (resistance to cracking).

[0023] The second magnet 32 ​​is positioned closer to the front door 3 than the first magnet 31 on the door-side jig 30. In this embodiment, the second magnet 32 ​​is connected and fixed to the first magnet 31 via a connecting portion 33. Here, the connection structure between the first magnet 31 and the second magnet 32 ​​by the connecting portion 33 is arbitrary. In this embodiment, as shown in Figure 4, both the first magnet 31 and the second magnet 32 ​​are disc-shaped and have through holes 31b and 32b penetrating their centers. The connecting portion 33 is composed of two shaft-like bodies 35 and 36 and an elongated nut portion 37, and each shaft-like body 35 and 36 is provided with bolt portions 35a and 36a that can pass through the through holes 31b and 32b of the respective magnets 31 and 32. In this case, with the first magnet 31 and the second magnet 32 ​​positioned so as to sandwich the elongated nut portion 37 in the axial direction, the bolt portion 35a of the first shaft-shaped body 35 is passed through the through hole 31b of the first magnet 31 and screwed into the nut portion 37, and the bolt portion 36a of the second shaft-shaped body 36 is passed through the through hole 32b of the second magnet 32 ​​and screwed into the nut portion 37. As a result, the first magnet 31 and the second magnet 32 ​​are connected and fixed via the respective shaft-shaped bodies 35, 36 and the nut portion 37.

[0024] The second shaft-shaped body 36, which is inserted through the second magnet 32, is provided with a locking portion 34 that can lock the first magnet 31 and the second magnet 32 ​​to the front door 3. This locking portion 34 is designed to prevent as much as possible the door-side jig 30 from falling off the front door 3 due to a predetermined force acting on the door-side jig 30. In this embodiment, the locking portion 34 is made up of a spiral projection 38 that can be screwed into the front door 3, which is provided on the side of the second shaft-shaped body 36 opposite to the first magnet 31 when viewed from the position where the second magnet 32 ​​is attached. In this case, the axial end of the second shaft-shaped body 36 that is further from the first magnet 31 (the side furthest from the spiral projection 38) is formed to have a smaller diameter than the mounting hole 3a of the front door 3 (see Figure 5). Therefore, as shown in Figure 5, by passing the second shaft-like body 36 through the mounting hole 3a from the inside in the vehicle width direction and screwing the helical projection 38 into the mounting hole 3a, the helical projection 38, or as shown in Figure 5, the portion of the second shaft-like body 36 between the helical projection 38 and the second magnet 32, becomes fitted and fixed in the mounting hole 3a. As a result, the first magnet 31 and the second magnet 32 ​​are attached to the front door 3 via the second shaft-like body 36 which forms the connecting portion 33, and the positions of the first magnet 31 and the second magnet 32 ​​with respect to the front door 3 are established.

[0025] Furthermore, as described above, with the second magnet 32 ​​attached to the front door 3, the second magnet 32 ​​is configured to attract the front door 3. In this embodiment, when a helical projection 38 is provided, the helical projection 38 can be screwed in to bring the second magnet 32 ​​into contact with the front door 3, and the area around the mounting hole 3a of the front door 3 can be attracted to the second magnet 32 ​​by the magnetic force of the second magnet 32.

[0026] The material, structure, and size of the second magnet 32 ​​can be arbitrarily set as long as the second magnet 32 ​​can attract the front door 3. On the other hand, in relation to the first magnet 31, it is preferable to select the material, structure, and size of each magnet 31, 32 such that the magnetic force of the second magnet 32 ​​is smaller than the magnetic force of the first magnet 31.

[0027] As described above, when the second shaft-shaped body 36 is fitted and fixed in the mounting hole 3a of the front door 3 between the spiral projection 38 and the second magnet 32, the relatively large diameter spiral projection 38 comes into contact with the outer surface 3b of the front door 3 in the vehicle width direction, and functions as a retainer to prevent the second shaft-shaped body 36 from coming out in the vehicle width direction.

[0028] Here, the shape and size (outer diameter) of the spiral projection 38 can be arbitrarily set, as long as it can be screwed into the mounting hole 3a from the inside in the vehicle width direction. In this embodiment, considering the time required for screwing, the number of turns is set to about 1 to 1.5 turns.

[0029] In this embodiment, a diameter-expanding portion 39 is further provided between the portion of the second shaft-shaped body 36 to which the second magnet 32 ​​is attached and the helical projection 38, with the diameter expanding towards the second magnet 32. Therefore, as shown in Figure 5, by screwing the helical projection 38 into the mounting hole 3a and then the diameter-expanding portion 39 biting into the periphery of the mounting hole 3a, the second shaft-shaped body 36 (or the diameter-expanding portion 39) can be fitted and fixed into the mounting hole 3a in a state where it is centered relative to the second shaft-shaped body 36.

[0030] With the vehicle body-side jig 20 and door-side jig 30, respectively, attached to the vehicle body 2 and front door 3, closing the front door 3 brings the receiving portion 22 of the vehicle body-side jig 20 and the first magnet 31 of the door-side jig 30 into contact at a predetermined open / closed position, as shown in Figure 6. At this time, the receiving surface 23 of the receiving portion 22 and the axial end face 31a of the first magnet 31 come into contact parallel to each other (see Figure 7), allowing the magnetic force of the first magnet 31, which is magnetized in a direction perpendicular to the axial end face 31a, to be maximized, and the receiving portion 22 is attracted to the first magnet 31 by this magnetic force. As a result, the front door 3 can be held to the vehicle body 2 with a predetermined force. Furthermore, opening the front door 3 with a force greater than the predetermined force releases the attraction between the first magnet 31 and the receiving portion 22, allowing the front door 3 to move to a predetermined open / closed position relative to the vehicle body 2 (for example, the position shown in Figure 1).

[0031] As described above, in the door holding jig 10 according to this embodiment, the first magnet 31 constituting the door-side jig 30 is attached to the front door 3, and a receiving portion 22 that can contact the first magnet 31 at a predetermined open / closed position of the front door 3 and be attracted by magnetic force is attached to the vehicle body 2. Therefore, the front door 3 can be fixed to the vehicle body 2 at the predetermined open / closed position to be held. Furthermore, since the closing operation of the front door 3 allows the first magnet 31 and the receiving portion 22 to contact at the predetermined open / closed position, the front door 3 can be automatically fixed to the vehicle body 2 by magnetic force by closing the front door 3 toward this open / closed position, and the fixed state (magnetic attraction state) between the front door 3 and the vehicle body 2 can be automatically released by opening the front door 3 from this open / closed position. Therefore, without providing a dedicated robot for removing the jig, it is possible to repeatedly open and close the front door 3 with the door holding jig 10 attached to the front door 3 and the vehicle body 2, and only by the operation of the door opening / closing robot.

[0032] Furthermore, in this embodiment, the door-side jig 30 is further provided with a second magnet 32 ​​connected to the first magnet 31 via a connecting portion 33, and a locking portion 34 capable of locking the second magnet 32 ​​to the front door 3. By configuring the door-side jig 30 in this way, when a force large enough to release the attraction of the receiving portion 22 to the first magnet 31 is applied to the front door 3, the locking portion 34 can hold the second magnet 32 ​​and the first magnet 31 connected to the second magnet 32 ​​to the front door 3. Therefore, there is no need to worry about the first magnet 31 falling off the front door 3, and it becomes possible to select and use a magnet capable of exerting the magnetic force necessary to hold the front door 3. Also, since the first and second magnets 31 and 32 are only attached to the front door 3 by the locking portion 34, they can be easily removed from the front door 3 by releasing the locking state. In addition, this configuration further provides a second magnet 32 ​​that can be magnetically attracted to the front door 3, and allows this second magnet 32 ​​to be held to the front door 3 by a locking part 34. Therefore, when the front door 3 is opened and the first magnet 31 is pulled away from the receiving part 22, even if the door-side jig 30 (first magnet 31, second magnet 32, and locking part 34) shifts relative to the front door 3, the second magnet 32 ​​is attracted to the front door 3, allowing the second magnet 32 ​​and the first magnet 31 connected to the second magnet 32 ​​to return to their original position (the position before the shift) relative to the front door 3. Thus, when the front door 3 is closed again, the first magnet 31 can be brought into contact with the receiving part 22 and attracted in the same position and orientation as before, thereby enabling the continuous exertion of a constant holding force. In other words, it becomes possible to repeatedly open and close the front door 3 with a constant force, such as by a robot.

[0033] Furthermore, in this embodiment, a spiral projection 38 serving as a locking portion 34 is provided on the second shaft-shaped body 36 serving as the connecting portion 33, and an enlarged diameter portion 39 is provided between the second magnet 32 ​​and the spiral projection 38, adjacent to the second magnet 32. The spiral projection 38 is screwed into the mounting hole 3a of the front door 3, and the enlarged diameter portion 39 is configured to bite into the mounting hole 3a at a position where at least a part of the spiral projection 38 abuts against the outer surface 3a of the front door 3. With this configuration, the spiral projection 38 functions as a retainer for the door-side jig 30 relative to the front door 3 with the simple operation of just screwing in the spiral projection 38, and the front door 3 can be firmly fixed to the connecting portion 33 (second shaft-shaped body 36) while centering is achieved by the enlarged diameter portion 39.

[0034] Although one embodiment of the present invention has been described above, the door-holding jig according to the present invention may also have configurations other than those described above, without departing from the spirit of the invention.

[0035] For example, in the above embodiment, the locking portion 34 is shown as a case in which a spiral projection 38 is provided on a shaft-shaped connecting portion 33, but of course other configurations are also possible. For example, although not shown in the figure, the entire area of ​​the second shaft-shaped body 36 on the other axial end side from the position where the second magnet 32 ​​is attached may be made into a male thread shape, and the door-side jig 30 may be attached to the front door 3 by passing this male thread-shaped portion through the mounting hole 3a and tightening it from the outside with a corresponding nut. Alternatively, the door-side jig 30 may use the portion of the front door 3 beyond the hole shape as the mounting portion of the door-side jig 30 (for example, a notch). In this case, the locking portion 34 should be shaped to correspond to the mounting portion of the front door 3 (for example, a hook shape).

[0036] Furthermore, the above explanation illustrates a case where the vehicle body-side jig 20 is composed of a mounting portion 21 and a receiving portion 22 for the vehicle body 2, and the door-side jig 30 is composed of a first magnet 31, a second magnet 32, a connecting portion 33, and a locking portion 34. However, it is not limited to this. If there are no problems in terms of placement space, a jig consisting of the first magnet 31, the second magnet 32, the connecting portion 33, and a locking portion (not shown) as a mounting portion for the vehicle body 2 may be attached to the vehicle body 2, and a jig consisting of a mounting portion (not shown) for the front door 3 and a receiving portion 22 may be attached to the front door 3. [Explanation of Symbols]

[0037] 1 vehicle 2 car bodies 2a Door opening 3 Front Doors 3a hole 3b surface 10 Door holding fixture 20. Jig on the vehicle body side 21 Mounting part 22 Receiving part 23 Receiving surface 30 Door-side jig 31,32 Magnets 31a Axial end face 31b,32b through hole 33 Connecting part 34 Locking part 35,36 Axial body 35a, 36a Bolt section 37 Nut section 38 Convex part 39 Expanded diameter part

Claims

1. A jig for holding a door in a predetermined open or closed position relative to the vehicle body, A first magnet that can be attached to one side of the vehicle body and the door, It comprises a receiving portion which can be attached to the other side of the vehicle body and the door, and which can come into contact with the first magnet at a predetermined open / closed position when the door is closed, A door-holding jig, wherein the receiving portion is configured to contact the first magnet and be attracted by magnetic force.

2. The receiving portion can be attached to the side of the vehicle body, and the first magnet can be attached to the side of the door. A second magnet is connected and fixed to the first magnet via a connecting portion, and is magnetically attracted to the door, The door holding jig according to claim 1, further comprising a locking portion capable of locking the second magnet to the door.

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