Door opening / closing device with lock mechanism, door for parts shelf and parts shelf

Abstract

To provide a lock mechanism-fitted door opening / closing apparatus, a component shelf door and a component shelf which can prevent the displacement of a door support member supporting a door body from a closed position to an open position by human power (with hand operation).SOLUTION: In an unlock state, the rotation of a door support member 48 from a closed position toward an open position is allowed by a lock mechanism 49. Therefore, in the unlock state, when a rotation shaft 46 is rotated by the driving force of a motor 61, and a first operation member 66 rotates from the closed position to the open position along with the rotation of the rotation shaft 46, the first operation member 66 presses a member to be abutted 76 from the side of the closed position and the door support member 48 rotates from the closed position to the open position. On the other hand, in a lock state, the rotation of the door support member from the closed position toward the open position is checked by the lock mechanism 49.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a door opening and closing device with a locking mechanism, a door for a parts shelf, and a parts shelf. [Background technology]

[0002] 2. Description of the Related Art Conventionally, an assembly line is provided in a production factory for automobiles or the like, and in the assembly line, for example, parts are assembled onto workpieces transported by a conveyor.

[0003] Furthermore, in a production factory where an assembly line is installed, a parts shelf is installed to store multiple types of parts. The parts shelf is provided with multiple storage spaces. Multiple types of parts are sorted by type and placed in parts boxes, which are then stored in the storage spaces. Parts to be used on the assembly line are picked (collected) from the parts shelf and delivered to the assembly line.

[0004] Therefore, if a mistake (picking error) occurs in which the wrong part (a part other than the part that is originally to be assembled onto the work) is taken from the parts shelf, a problem may occur in which the wrong part is assembled onto the work on the assembly line.

[0005] As a measure to prevent picking errors, for example, each storage space on the parts shelf is provided with a door (shielding member) that opens and closes the removal opening for parts from the storage space. During picking work, the opening and closing of each door is controlled to automatically open the removal opening of the storage space in which the part to be removed by the worker is stored. Therefore, if the worker removes the part from the opened removal opening, it is possible to prevent the wrong part from being removed from the parts shelf. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2017-13953 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, in conventional parts shelves with doors, workers may manually open the door of the outlet and take out the wrong parts from that outlet. Also, workers may manually open the door of the outlet and return excess parts taken out from another outlet to the storage space (parts box) from that artificially opened outlet. In this case, the outlet of the storage space to which the parts were returned may automatically open, and the wrong parts may be taken out from that outlet.

[0008] An object of the present invention is to provide a door opening and closing device with a locking mechanism, a door for a parts shelf, and a parts shelf that can prevent a door support member that supports a door body from being displaced from a closed position to an open position by human force (manual operation). [Means for solving the problem]

[0009] In order to achieve the above object, a door opening and closing device with a locking mechanism according to one aspect of the present invention includes a drive source, a rotation shaft extending in a predetermined direction and rotating by a drive force of the drive source, a first operating member extending in a direction intersecting the predetermined direction and rotating about a first axis extending in the predetermined direction in association with the rotation of the rotation shaft, a second operating member extending in a direction intersecting the predetermined direction and rotating about a second axis extending in the predetermined direction in association with the rotation of the rotation shaft, and a third operating member provided to be rotatable about a third axis extending in the predetermined direction and supporting a door body. The door support device includes a door support member, an abutment member extending from the door support member within the rotation trajectory of the first operating member and arranged so that the first operating member, which rotates from the closed position to the open position, abuts against the abutment member from the closed position side, and a locking mechanism configured to switch between a locked state that prevents the door support member from rotating from the closed position to the open position and an unlocked state that allows the door support member to rotate from the closed position to the open position in response to the rotation of the second operating member between the locked position and the unlocked position.

[0010] According to this configuration, in the unlocked state, the locking mechanism allows the door support member to rotate from the closed position to the open position. Therefore, in the unlocked state, when the rotation shaft rotates due to the driving force of the drive source and the first operating member rotates from the closed position to the open position in accordance with the rotation of the rotation shaft, the first operating member abuts against the abutted member from the closed position side and presses the abutted member, causing the door support member to rotate from the closed position to the open position.

[0011] On the other hand, in the locked state, the locking mechanism prevents the door support member from rotating from the closed position to the open position. Therefore, even if a human force is applied to the door support member so that the door support member rotates from the closed position to the open position, the door support member is prevented from rotating from the closed position to the open position. In other words, the door support member can be prevented from being displaced from the closed position to the open position by human force.

[0012] The lock mechanism may be configured to include a conversion arm that is provided rotatably around a conversion axis that extends in a direction intersecting a predetermined direction, and has integrally therewith an operated part that extends from the conversion axis into a rotation trajectory of the second operating member, a latch operating part that extends from the conversion axis in a direction intersecting both the direction of the conversion axis and the extension direction of the operated part, a latch that extends in a direction intersecting the direction of the conversion axis, and a connecting shaft that extends in the direction of the conversion axis and is inserted rotatably relative to the latch operating part and the latch. In this case, when the second operating member is in the unlocked position, the latch is in the unlocked position where it retreats in the direction in which the latch extends relative to the door support member, and is in the unlocked state, and when the second operating member is rotated from the unlocked position to the locked position, the second operating member presses the operated part, and the conversion arm rotates around the conversion axis, and with the rotation of the conversion arm, the latch is in the locked position where it faces the door support member that is in the closed position from the unlocked position, and is in the locked state.

[0013] In order to prevent the door support member from rotating, a solenoid that moves the latch linearly may be provided. In this configuration, in an unlocked state, the latch retreats to an unlocked position where it does not face the door support member in the closed position, thereby allowing the door support member to rotate from the closed position to the open position. On the other hand, in a locked state, the latch advances from the open position side to a locked position where it faces the door support member in the closed position, thereby preventing the door support member from rotating from the closed position to the open position. However, not only is a solenoid added separately from the drive source, but the addition of the solenoid requires a signal line to input an operation signal to the solenoid, which increases the number of parts. In addition, it is necessary to adjust the input timing of the operation signal of the drive source and the operation signal of the solenoid, which makes signal control complicated.

[0014] In contrast, the above-mentioned lock mechanism switches between the locked and unlocked states by rotating the second operating member, and does not require a solenoid, so it requires fewer parts than a configuration with a solenoid, and only requires control of the operating signal of the drive source, so the signal control program is simpler. As a result, the size and cost of the door opening and closing device with a lock mechanism can be reduced compared to a configuration with a solenoid.

[0015] The locking mechanism may further include a biasing member that biases the latch from the locked position towards the unlocked position.

[0016] In this configuration, when the second operating member is rotated from the locked position to the unlocked position and the pressure applied by the second operating member to the operated portion is released, the biasing force of the biasing member displaces the latch from the locked position to the unlocked position and causes the conversion arm to rotate around the conversion axis.

[0017] The contact member may be formed separately from the door support member and fixed to the door support member, or may be formed integrally with the door support member.

[0018] The door support member is No. 1It is preferable that the operating member be configured to rotate from the open position to the closed position under its own weight as the operating member rotates from the open position to the closed position.

[0019] With this configuration, the door support member can be displaced from the open position to the closed position without applying an external force to the door support member.

[0020] The first axis and the second axis may be the same axis, and the first operating member and the second operating member may be integral, be provided to rotate integrally with the rotating shaft, and extend from the rotating shaft in a direction intersecting the predetermined direction. In other words, the first axis and the second axis may be the same axis, and an operating member extending from the rotating shaft in a direction intersecting the predetermined direction may be provided to rotate integrally with the rotating shaft, and the operating member may serve as both the first operating member and the second operating member.

[0021] This configuration allows the number of parts to be reduced, and the size of the door opening and closing device with a locking mechanism can be made smaller.

[0022] The first axis, the second axis and the third axis may be the same axis, and the door support member may be provided rotatably about a support shaft separate from the rotation shaft.

[0023] A door for a parts shelf according to another aspect of the present invention is a door provided on a parts shelf having a storage space for storing parts, and includes a door main body for opening and closing an opening for removing parts from the storage space, and a door opening and closing device for opening and closing the door main body, the door opening and closing device including a drive source, a rotating shaft extending in a predetermined direction along one edge of the opening and rotating by a driving force of the drive source, an operating member provided to rotate integrally with the rotating shaft and extending from the rotating shaft in a direction intersecting the predetermined direction, a support shaft extending in the predetermined direction, and an operating member rotatable about the support shaft. The door support member is supported by the door support member and supports the door body, a conversion arm provided rotatably about a conversion axis extending in a direction intersecting a predetermined direction, a latch extending in a direction intersecting the direction of the conversion axis, and a connecting shaft extending in the direction of the conversion axis and inserted into the conversion arm and the latch. In a locked state in which the operating member is located at a locked position, the latch is located at a locked position facing the door support member located at a closed position from one side in the rotation direction of the rotation shaft, and when the rotation shaft is rotated to one side in the rotation direction from the locked state, the connecting shaft is inserted into the door support member and the latch. and as the operating member rotates from the locked position to the unlocked position, the latch is displaced from the locked position to an unlocked position in which it retracts in the direction in which the latch extends relative to the door support member, thereby entering an unlocked state. In the unlocked state, the pivot shaft rotates to one side in the pivot direction, and as the operating member rotates from the closed position to the open position, the operating member presses the door support member, causing the door support member to rotate from the closed position to the open position about the support shaft as a fulcrum. From the unlocked state in which the operating member is in the unlocked position, the pivot shaft rotates to the other side opposite to the one side in the pivot direction, and as the operating member rotates from the unlocked position to the locked position, the operating member presses the conversion arm, causing the conversion arm to rotate about the conversion axis, and as the conversion arm rotates, the latch is displaced from the unlocked position to the locked position. The door body is configured to close the removal opening when the door support member is in the closed position, and to open the removal opening when the door support member is in the open position.

[0024] According to this configuration, in the locked state, the latch is located at a locked position facing the door support member located at the closed position from one side in the rotation direction of the rotation shaft. Therefore, even if a human force is applied to the door support member so as to rotate the door support member from the closed position to the open position, the door support member abuts against the latch, thereby preventing the door support member from rotating. This makes it possible to prevent the door support member from being displaced from the closed position to the open position by human force, and to prevent the door body supported by the door support member from being displaced from the position that closes the component removal opening from the storage space of the component shelf.

[0025] As a result, it is possible to prevent the outlet from being opened artificially, and to prevent parts from being taken out from the outlet that has been opened artificially, and to prevent parts from being returned to the storage space from the outlet, thereby preventing picking errors in which the wrong parts are taken out from the outlet.

[0026] From the locked state, the rotation shaft rotates to one side in the rotation direction due to the driving force of the drive source, and as the operation member rotates from the locked position to the unlocked position, the latch is displaced to an unlocked position where it retreats from the locked position in the direction in which the latch extends relative to the door support member. This results in an unlocked state in which the latch does not face the door support member from one side in the rotation direction of the rotation shaft, and the door support member is allowed to rotate to one side in the rotation direction, that is, in the direction from the closed position to the open position. In the unlocked state, when the rotation shaft further rotates to one side in the rotation direction and the operation member rotates from the closed position to the open position, the operation member presses the door support member as it rotates, so that the door support member rotates from the closed position to the open position about the support shaft, and the door main body supported by the door support member opens an opening for removing components from a storage space of the components shelf.

[0027] In this way, by rotating the rotating shaft in one direction, it is possible to switch from a locked state to an unlocked state, and in the unlocked state, the door support member can be rotated from a closed position to an open position to open the outlet of the storage space in which the part to be taken out by the worker is stored. Then, by the worker taking out the part from the outlet that has been automatically opened (not manually), it is possible to prevent picking errors in which the wrong part is taken out from the parts shelf.

[0028] As with the lock mechanism described above, this configuration does not require a solenoid to switch between the locked and unlocked states, so the number of parts is smaller than in a configuration that uses a solenoid, and the signal control program is simpler because only the operating signal of the drive source needs to be controlled. As a result, the size and cost of the door opening and closing device can be reduced compared to a configuration that uses a solenoid.

[0029] A parts shelf according to yet another aspect of the present invention is a parts shelf having a storage space for storing parts, the parts shelf including a door body for opening and closing an opening for removing parts from the storage space, and a door opening and closing device for opening and closing the door body, the door opening and closing device including a drive source, a rotating shaft extending in a predetermined direction along one edge of the opening and rotating by a driving force of the drive source, an operating member provided to rotate integrally with the rotating shaft and extending from the rotating shaft in a direction intersecting the predetermined direction, a support shaft extending in the predetermined direction, and a supporting member supported to be rotatable about the support shaft. The door lock includes a door support member that supports a door body, a conversion arm that is provided rotatably around a conversion axis that extends in a direction intersecting a predetermined direction, a latch that extends in a direction intersecting the direction of the conversion axis, and a connecting shaft that extends in the direction of the conversion axis and is inserted into the conversion arm and the latch. In a locked state in which the operating member is located at a locked position, the latch is located at a locked position facing the door support member that is located at a closed position from one side in the rotation direction of the rotation shaft, and when the rotation shaft is rotated to one side in the rotation direction from the locked state, As the operating member rotates from the locked position to the unlocked position, the latch displaces from the locked position to an unlocked position in which it retracts in the direction in which the latch extends relative to the door support member, thereby entering an unlocked state. In the unlocked state, the pivot shaft rotates to one side in the pivot direction, and as the operating member rotates from the closed position to the open position, the operating member presses the door support member, causing the door support member to rotate from the closed position to the open position around the support shaft as a fulcrum. From the unlocked state in which the operating member is in the unlocked position, the pivot shaft rotates to the other side opposite to the one side in the pivot direction, and as the operating member rotates from the unlocked position to the locked position, the operating member presses the conversion arm, causing the conversion arm to rotate about the conversion axis, and as the conversion arm rotates, the latch is displaced from the unlocked position to the locked position. The door body is configured to close the removal opening when the door support member is in the closed position, and to open the removal opening when the door support member is in the open position.

[0030] This configuration can achieve the same effects as the above-described configuration of the parts shelf door.

[0031] The door opening and closing device may further include a biasing member that biases the latch from the locked position toward the unlocked position. Also, the conversion arm is configured such that the operation member is positioned between the locked position and the unlocked position from the conversion axis. position and a latch operating part extending in a rotation locus between the conversion axis and the operating member, and the connecting shaft may be inserted through the latch operating part. In this case, as the rotation shaft rotates to the other side in the rotation direction from the unlocked state and the operating member rotates from the unlocked position to the locked position, the operating member presses the operated part, and the conversion arm rotates about the conversion axis against the biasing force of the biasing member and the latch is displaced from the unlocked position to the locked position, and as the rotation shaft rotates to one side in the rotation direction from the locked state and the operating member rotates from the locked position to the unlocked position, the latch is displaced from the locked position to the unlocked position by the biasing force of the biasing member and the conversion arm rotates about the conversion axis.

[0032] It is preferable that the door support member is configured to rotate from the open position to the closed position under its own weight as the pivot shaft rotates to the other side of the pivot direction and the operating member rotates from the open position to the closed position.

[0033] With this configuration, the door support member can be displaced from the open position to the closed position without applying an external force to the door support member. Effect of the Invention

[0034] According to the present invention, it is possible to prevent the door support member that supports the door body from being displaced from the closed position to the open position by human force (manual operation). [Brief description of the drawings]

[0035] [Figure 1] FIG. 2 is a right perspective view of a parts shelf according to an embodiment of the present invention. [Diagram 2] 1 is a left perspective view (as viewed from above, front left) of a door opening and closing device provided on a parts shelf. FIG. [Diagram 3]FIG. 2 is a right perspective view (perspective view seen from the upper right front) of the door opening and closing device. [Figure 4] FIG. 2 is a left perspective view of the door opening and closing device, showing a state when the motor is in an angular position of 0°. [Diagram 5] FIG. 2 is a left perspective view of the door opening and closing device, showing the state when the motor is in an angular position of 35°. [Figure 6] FIG. 2 is a left perspective view of the door opening and closing device, showing the state when the motor is in an angular position of 90°. [Figure 7] FIG. 2 is a left perspective view of the door opening and closing device, showing the state when the motor is in an angular position of 180°. [Figure 8] FIG. [Figure 9] FIG. 11 is a left perspective view of a door opening and closing device according to a modified example. [Figure 10] FIG. 10 is a left side view of the door opening and closing device shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0036] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0037] <Parts shelf> FIG. 1 is a right perspective view (perspective view seen from above the right front) of a parts shelf 1 according to an embodiment of the present invention.

[0038] The parts shelf 1 is installed, for example, in a production factory for automobiles or the like, and stores various parts used on the assembly line of the production factory.

[0039] In addition, the surface of the components shelf 1 where an outlet 33, which will be described later, is provided is referred to as the front. For convenience of the following explanation, when facing the front of the components shelf 1, the near side is referred to as the front of the components shelf 1, the far side is referred to as the rear of the components shelf 1, the left side is referred to as the left side of the components shelf 1, and the right side is referred to as the right side of the components shelf 1.

[0040] The parts shelf 1 includes a left front vertical frame 11L, a right front vertical frame 11R, a left rear vertical frame 12L, a right rear vertical frame 12R, an upper left horizontal frame 13U, a lower left horizontal frame (not shown), an upper right horizontal frame 14U, a lower right horizontal frame 14L, five front horizontal frames 15, six rear horizontal frames 16, and 24 shelf frames 17.

[0041] In FIG. 1, the left front vertical frame 11L, the right front vertical frame 11R, the left rear vertical frame 12L, the right rear vertical frame 12R, the upper left horizontal frame 13U, the lower left horizontal frame, the upper right horizontal frame 14U, the lower right horizontal frame 14L, each front horizontal frame 15, each rear horizontal frame 16 and each shelf frame 17 are cylindrical or columnar, but their shapes are not limited to cylindrical or columnar, and may also be square tubular or columnar.

[0042] The left front vertical frame 11L, the right front vertical frame 11R, the left rear vertical frame 12L, and the right rear vertical frame 12R are all vertically installed on the floor of the production factory. The left front vertical frame 11L and the right front vertical frame 11R are arranged with a gap between them in the left-right direction. The left rear vertical frame 12L and the right rear vertical frame 12R are arranged with a gap between them behind the left front vertical frame 11L and the right front vertical frame 11R, respectively.

[0043] The upper left horizontal frame 13U is installed between the upper ends of the left front vertical frame 11L and the left rear vertical frame 12L. The lower left horizontal frame is installed between the lower ends of the left front vertical frame 11L and the left rear vertical frame 12L. The upper right horizontal frame 14U is installed between the upper ends of the right front vertical frame 11R and the right rear vertical frame 12R. The lower right horizontal frame 14L is installed between the lower ends of the right front vertical frame 11R and the right rear vertical frame 12R.

[0044] The five front cross frames 15 are installed at equal intervals in the vertical direction between the left front vertical frame 11L and the right front vertical frame 11R. The number of rear cross frames 16 is one more than the number of front cross frames 15, and the six rear cross frames 16 are installed at intervals in the vertical direction between the left rear vertical frame 12L and the right rear vertical frame 12R.

[0045] The upper left horizontal frame 13U and the top front horizontal frame 15 are connected to the left front vertical frame 11L by a joint 21LF. The upper right horizontal frame 14U and the top front horizontal frame 15 are connected to the right front vertical frame 11R by a joint 21RF. The upper left horizontal frame 13U and the top rear horizontal frame 16 are connected to the left rear vertical frame 12L by a joint 21LR. The upper right horizontal frame 14U and the top rear horizontal frame 16 are connected to the right rear vertical frame 12R by a joint 21RR.

[0046] The lower left horizontal frame and the lowest front horizontal frame 15 are connected to the left front vertical frame 11L by a joint 22LF. The lower right horizontal frame 14L and the lowest front horizontal frame 15 are connected to the right front vertical frame 11R by a joint 22RF. The lower left horizontal frame and the lowest rear horizontal frame 16 are connected to the left rear vertical frame 12L by a joint (not shown). The lower right horizontal frame 14L and the lowest rear horizontal frame 16 are connected to the right rear vertical frame 12R by a joint 22RR.

[0047] The front horizontal frames 15 other than the top and bottom are connected to the left front vertical frame 11L by joints 23L and to the right front vertical frame 11R by joints 23R. The rear horizontal frames 16 other than the top and bottom are connected to the left rear vertical frame 12L by joints 24L and to the right rear vertical frame 12R by joints 24R.

[0048] The four rear cross frames 16 (hereinafter referred to as "middle cross frames 16") other than the top and bottom are disposed at equal intervals in the vertical direction, and the intervals are set to be the same as the intervals between the front cross frames 15. The bottommost middle cross frame 16 is disposed at a higher position than the bottommost front cross frame 15, and has a certain height difference with respect to the bottommost front cross frame 15. The second-lowest middle cross frame 16 is disposed at a higher position than the second-lowest front cross frame 15, and has a certain height difference with respect to the second-lowest front cross frame 15. The third-lowest middle cross frame 16 is disposed at a higher position than the third-lowest front cross frame 15, and has a certain height difference with respect to the third-lowest front cross frame 15. The fourth-lowest, i.e., the topmost middle cross frame 16, is disposed at a higher position than the fourth-lowest front cross frame 15, and has a certain height difference with respect to the fourth-lowest front cross frame 15.

[0049] Six shelf frames 17 are installed between each front horizontal frame 15 other than the top one and an intermediate horizontal frame 16 that has a certain height difference with respect to the front horizontal frames 15. The six shelf frames 17 are connected to the front horizontal frames 15 by joints 25F and to the intermediate horizontal frames 16 by joints 25R.

[0050] The parts shelf 1 has storage spaces 31. The storage spaces 31 are provided on six shelf frames 17 that are installed between each of the front horizontal frames 15 except for the top one and the middle horizontal frame 16. Since one storage space 31 is provided on two shelf frames 17, the parts shelf 1 has 3 x 4 storage spaces 31 as a whole.

[0051] A parts box 32 is placed in each storage space 31. Various parts used on the assembly line are sorted by type and placed in the parts box 32, and the parts box 32 is placed in the storage space 31, whereby each parts box 32 is stored in the storage space 31. The space between the front horizontal frame 15 at the bottom of the storage space 31 and the front horizontal frame 15 at the top of the storage space 31 is an outlet 33 for parts from the storage space 31 (parts box 32), and a worker performing picking work in the production plant can take out parts stored in the storage space 31 from the outlet 33.

[0052] The numbers of the left front vertical frame 11L, the right front vertical frame 11R, the left rear vertical frame 12L, the right rear vertical frame 12R, the upper left horizontal frame 13U, the lower left horizontal frame, the upper right horizontal frame 14U, the lower right horizontal frame 14L, the front horizontal frame 15, the rear horizontal frame 16, and the shelf frame 17 are not limited to the above numbers. For example, an intermediate vertical frame that is vertically erected on the floor surface of the production factory may be added between the left front vertical frame 11L and the right front vertical frame 11R, and each front horizontal frame 15 may be connected to the intermediate vertical frame. In this case, it is preferable that the intermediate vertical frame is disposed between the take-out openings 33 arranged in the left-right direction so as not to interfere with the take-out of parts from the take-out openings 33.

[0053] In addition, instead of the six shelf frames 17, rectangular shelf boards may be installed between each front cross frame 15 other than the top one and an intermediate cross frame 16 which has a certain height difference relative to that front cross frame 15.

[0054] <Parts shelf door> The parts shelf 1 is provided with a parts shelf door 34. The parts shelf door 34 is attached to the front horizontal frame 15 above the outlet 33 of each storage space 31. The parts shelf door 34 includes a rectangular plate-shaped door main body 35 that opens and closes the outlet 33, and a door opening and closing device 36 that opens and closes the door main body 35.

[0055] Fig. 2 is a left perspective view (perspective view seen from the upper left front) of the door opening and closing device 36. Fig. 3 is a right perspective view (perspective view seen from the upper right front) of the door opening and closing device 36.

[0056] The door opening and closing device 36 includes a device main body 41 .

[0057] The housing 42 of the device main body 41 is formed in a substantially rectangular parallelepiped shape. The housing 42 is disposed so that its longitudinal direction coincides with the left-right direction, and is attached to the front horizontal frame 15 via brackets 43. A lamp 44 is provided on the front surface of the housing 42. In addition, a lever switch 45 is provided on the bottom surface of the housing 42 so as to protrude downward.

[0058] The door opening and closing device 36 further includes a rotating shaft 46 (see FIG. 4), a support shaft 47, a door support member 48, and a locking mechanism 49.

[0059] The support shaft 47 is provided on the same axis as the rotating shaft 46. In other words, the support shaft 47 is provided so as to have the same axis as the rotating shaft 46.

[0060] The door support member 48 is provided so as to be rotatable about the support shaft 47. Specifically, the door support member 48 includes a left support arm 51 disposed to the left of the housing 42, a right support arm 52 disposed to the right of the housing 42, and a base frame 53 installed between the left support arm 51 and the right support arm 52. In the state shown in FIG. 2 and FIG. 3, the left support arm 51 and the right support arm 52 extend forward and downward from the support shaft 47, and then bend downward and further extend. The base frame 53 integrally includes a rectangular frame-shaped portion 54 and a cover portion 55 extending from the frame-shaped portion 54. The frame-shaped portion 54 straddles between the left support arm 51 and the right support arm 52, and is fixed to the left support arm 51 and the right support arm 52. The door main body 35 is fixed to the frame-shaped portion 54 by, for example, four screws. The cover portion 55 extends from the frame portion 54 along the left support arm 51 and, in the state shown in Figures 2 and 3, covers, from the upper front, the portion of the left support arm 51 that extends downward and forward from the support shaft 47.

[0061] The locking mechanism 49 is provided at a distance to the left of the device body 41. The locking mechanism 49 is supported by a base 56 and covered by a cover 57. As described below, the locking mechanism 49 includes a latch 82, and FIGS. 2 and 3 show the latch 82 protruding rightward from the right side surface of the base 56 as part of the locking mechanism 49.

[0062] Figures 4, 5, 6 and 7 are left oblique views of the door opening and closing device 36 (oblique views seen from the upper left front at a different angle from the left oblique view shown in Figure 2), and are shown without the cover portion 55 of the base frame 53 and the cover 57 of the locking mechanism 49.

[0063] 4, a motor 61 (an example of a drive source) is housed within the housing 42. The rotating shaft 46 is an output shaft of the motor 61, and the motor 61 is disposed in a state in which the rotating shaft 46 extends leftward from the motor body 62. The rotating shaft 46 protrudes from the left side surface of the housing 42 and extends leftward.

[0064] FIG. 8 is a plan view of the door opening and closing device 36, in which the cover portion 55 of the base frame 53 and the cover 57 of the locking mechanism 49 are omitted.

[0065] The support shaft 47 includes a left support shaft 63 and a right support shaft 64. The left support shaft 63 is rotatably supported by the base 56 of the lock mechanism 49 and protrudes to the right from the right side surface of the base 56. A gap is provided between the tip of the rotation shaft 46 and the tip of the left support shaft 63. The right support shaft 64 is rotatably supported by the housing 42 and protrudes to the left from the left side surface of the housing 42. The left support arm 51 of the door support member 48 has its base end fixed to the left support shaft 63 so as to rotate integrally with the left support shaft 63. The right support arm 52 of the door support member 48 has its base end fixed to the right support shaft 64 so as to rotate integrally with the right support shaft 64. With this configuration, the left support arm 51 and the right support arm 52 are provided rotatably about the same axis as the axis of the rotation shaft 46, with the left support shaft 63 and the right support shaft 64 as fulcrums, respectively.

[0066] The rotating shaft 46 supports an operating member 65. The operating member 65 includes a first operating member 66 that is substantially L-shaped in side view and a cylindrical second operating member 67. The first operating member 66 is fixed to the rotating shaft 46 and integrally includes a block-shaped base end 71 that extends in a direction perpendicular to the axial direction of the rotating shaft 46 and a block-shaped tip end 72 that extends at an angle relative to the extending direction of the base end 71. One surface 73 (see FIG. 6) of the base end 71 and one surface 74 (see FIG. 6) of the tip end 72 form an interior angle, and the interior angle is set to 125°. In other words, one surface 74 of the tip end 72 is inclined at an angle of 125° relative to one surface 73 of the base end 71. The second operating member 67 extends from a tip surface 75 of the tip end 72 of the first operating member 66 in the extending direction of the tip end 72. With this configuration, the first operating member 66 and the second operating member 67 are integral, extend from the rotating shaft 46 in a direction perpendicular to the axial direction of the rotating shaft 46, and rotate integrally with the rotating shaft 46 as the rotating shaft 46 rotates.

[0067] An abutment member 76 is attached to the base end of the left support arm 51 of the door support member 48. The abutment member 76 is substantially L-shaped and integrally includes a fixed portion 77 extending along the left support arm 51 and an abutment portion 78 extending and bending to the right relative to the fixed portion 77. The fixed portion 77 is fixed to the left support arm 51, and the abutment portion 78 extends from the left support arm 51 within the rotation trajectory of the tip portion 72 of the first operating member 66.

[0068] The lock mechanism 49 includes a conversion arm 81 , a latch 82 , and a connecting shaft 83 .

[0069] A conversion arm shaft 84 extending in the vertical direction is provided on the base 56 of the lock mechanism 49. The conversion arm 81 is provided rotatably about the conversion arm shaft 84. The conversion arm 81 is substantially L-shaped and integrally includes an operated portion 85 extending from the conversion arm shaft 84 into the rotation trajectory of the second operating member 67, and a latch operating portion 86 extending at a right angle to the operated portion 85.

[0070] The base 56 is further provided with a right side wall 87, the right side surface of which constitutes the right side surface of the base 56, and an opposing wall 88 that faces the right side wall 87 from the left side with a gap therebetween. The latch 82 is cylindrical, and is installed between the right side wall 87 and the opposing wall 88 of the base 56, extending in the left-right direction. The right end of the latch 82 penetrates the right side wall 87 and protrudes rightward from the right side surface of the base 56 (right side wall 87).

[0071] The connecting shaft 83 is rotatably inserted into the latch 82. In addition, a U-shaped groove 89 is formed in the latch operation part 86 of the conversion arm 81 by cutting out a U-shape from its tip, and the connecting shaft 83 is inserted into the U-shaped groove 89 with some play.

[0072] A coil spring 91 is provided in a compressed state between the connecting shaft 83 and a right side wall 87 of the base 56, and the latch 82 is inserted through the coil spring 91. The connecting shaft 83 is constantly biased to the right by the biasing force of the coil spring 91.

[0073] <Parts shelf door operation> The operation of the parts shelf door 34 is controlled by a control device consisting of, for example, a microcomputer (microcontroller unit). The parts shelf door 34 is equipped with a control circuit that incorporates a drive circuit for the lamp 44 and the motor 61 and a receiving circuit for receiving a signal from the lever switch 45. The control device is connected to the control circuits of all the parts shelf doors 34 of the parts shelf 1 so as to be able to send and receive signals. A program that controls the operation of the parts shelf door 34 is stored in the memory of the control device, and the program includes information such as the types of parts stored in each storage space 31 of the parts shelf 1, the types of parts to be taken out of the parts shelf 1 by an operator and the order in which they should be taken out.

[0074] During a picking operation in which an operator picks a part from the parts shelf 1, the control device outputs a lamp on signal and a lamp off signal for lamp 44, as well as a motor forward rotation signal and a motor reverse rotation signal for motor 61, to the control circuit of the storage space 31 (removal opening 33) from which the part is to be removed in accordance with the order in which the parts are to be removed.

[0075] In the initial state before the motor 61 is actuated, the second operating member 67 is located in the locked position as shown in Fig. 4. The second operating member 67 located in the locked position presses the operated portion 85 of the conversion arm 81 of the locking mechanism 49 backward, and the latch operating portion 86 of the conversion arm 81 is located in the rightmost position. Due to this position of the conversion arm 81, the latch 82 of the locking mechanism 49 is located in the locked position where it protrudes most from the right side surface of the base 56. The door support member 48 is located in the closed position where the base ends of the left support arm 51 and the right support arm 52 extend downward and forward from the support shaft 47, and the door main body 35 supported by the door support member 48 extends in the vertical direction to close the outlet 33 of the storage space 31.

[0076] In the initial state, the one surface 73 of the base end 71 of the first operating member 66 abuts against the abutted portion 78 of the abutted member 76, and the one surface 74 of the tip end 72 of the first operating member 66 is separated from the abutted portion 78. At this time, even if a manual force is applied to the door support member 48 so that the lower end of the door main body 35 is lifted forward, the abutted portion 78 abuts against the one surface 73, preventing the door support member 48 from rotating. In addition, the tip end of the latch 82 located in the locked position faces the left support arm 51 of the door support member 48 located in the closed position from above and in front. Therefore, even if a manual force large enough to rotate the first operating member 66 is applied from the abutted portion 78 to the one surface 73, causing the door support member 48 to rotate counterclockwise as viewed from the left, the left support arm 51 of the door support member 48 abuts against the latch 82, preventing the door support member 48 from rotating any further. That is, in the initial state, the lock mechanism 49 is in a locked state in which the door support member 48 is prevented from rotating from the closed position toward the open position.

[0077] It is assumed that the angular position of the motor 61 in the initial state is 0°, and when the motor 61 rotates forward from the angular position of 0°, the rotation angle of the motor 61 increases by a positive value.

[0078] When a picking operation starts, a lamp illumination signal and a motor forward rotation signal are output from the control device. When the lamp illumination signal is input to the control circuit, power is supplied from the control circuit to the lamp 44, and the lamp 44 is illuminated. When the lamp 44 is illuminated, the worker is instructed to remove the part from the storage space in which the parts shelf door 34 having the lit lamp 44 is provided. When the motor forward rotation signal is input to the control circuit, power is supplied from the control circuit to the motor 61, and the motor 61 begins to rotate forward. As a result of the forward rotation of the motor 61, the rotating shaft 46 rotates counterclockwise when viewed from the left, and the operating member 65 (first operating member 66 and second operating member 67) rotates integrally with the rotating shaft 46.

[0079] Since the angle formed by one surface 73 of the base end 71 of the first operating member 66 and one surface 74 of the tip end 72 is set to 125°, when the rotation angle of the motor 61 reaches 35°, one surface 74 of the tip end 72 comes into contact with the contacted portion 78 of the contacted member 76, as shown in Fig. 5. At this time, one surface 74 of the tip end 72 has not yet pressed against the contacted portion 78 of the contacted member 76, and the door support member 48 remains in the closed position. The position of the first operating member 66 at this time is the closed position.

[0080] Meanwhile, since the connecting shaft 83 is biased to the right by the biasing force (elastic force) of the coil spring 91, the connecting shaft 83 moves to the right with the rotation of the second operating member 67, and the latch 82 moves to the right, and the conversion arm 81 rotates about the conversion arm shaft 84 as a fulcrum. Then, before the rotation angle of the motor 61 reaches 35°, the second operating member 67 passes through the unlocked position, the second operating member 67 separates from the operated portion 85 of the conversion arm 81, and the latch 82 retreats to the unlocked position where it does not face the left support arm 51 of the door support member 48 in the rotation direction of the left support arm 51. By the latch 82 retreating to the unlocked position, the lock mechanism 49 becomes in an unlocked state that allows the door support member 48 to rotate from the closed position to the open position.

[0081] When the motor 61 rotates further forward from the 35° angle position, the first operating member 66 rotates from the closed position toward the open position, and one surface 74 of the tip portion 72 of the first operating member 66 presses the abutted portion 78 of the abutted member 76 in the counterclockwise direction as viewed from the left. As a result, as shown in Fig. 6, the door support member 48 starts to rotate counterclockwise as viewed from the left together with the abutted portion 78, with the support shaft 47 as the fulcrum.

[0082] Then, when the rotation angle of the motor 61 reaches 180°, the motor 61 is stopped. At this time, the first operating member 66 is in the open position, and the door support member 48 is in the open position rotated 145° from the closed position. By the door support member 48 rotating from the closed position to the open position, the door main body 35 supported by the door support member 48 rotates 145° from a state in which the outlet 33 of the storage space 31 is closed, and opens the outlet 33.

[0083] Due to its weight and shape design, the door support member 48 rotates from the open position to the closed position under its own weight unless a force is applied to hold it in the open position. When the motor 61 is stopped and the door support member 48 is in the open position, one surface 74 of the tip portion 72 of the first operating member 66 abuts against the abutted portion 78 of the abutment member 76, thereby preventing the door support member 48 from rotating from the open position to the closed position under its own weight.

[0084] When an operator removes a part stored in storage space 31 from the opened removal port 33, lever switch 45 is operated so that the lower end of lever switch 45 is displaced horizontally. When lever switch 45 is operated, an ON signal is input from lever switch 45 to the control circuit, and a signal indicating that an ON signal has been input from lever switch 45 is output from the control circuit to the control device. In response to this, the control device outputs a lamp-off signal and a motor reverse rotation signal to the control circuit.

[0085] When the lamp-off signal is input to the control circuit, the supply of power from the control circuit to the lamp 44 is stopped, and the lamp 44 is turned off. When the motor reverse rotation signal is input to the control circuit, power is supplied from the control circuit to the motor 61, and the motor 61 begins to rotate in the reverse direction. Due to the reverse rotation of the motor 61, the rotating shaft 46 rotates clockwise when viewed from the left, and the operating member 65 (the first operating member 66 and the second operating member 67) rotates integrally with the rotating shaft 46.

[0086] As the first operating member 66 rotates clockwise as viewed from the left, the door support member 48 rotates from the open position to the closed position due to its own weight. When the motor 61 rotates in the reverse direction from an angular position of 180° to an angular position of 35°, the first operating member 66 is located in the closed position, the door support member 48 is located in the closed position, and the door main body 35 supported by the door support member 48 closes the outlet 33 of the storage space 31.

[0087] Thereafter, when the motor 61 rotates from the 35° angle position to the 0° angle position, the second operating member 67 passes through the unlocked position and rotates to the locked position. As the second operating member 67 rotates, the second operating member 67 presses the operated portion 85 of the conversion arm 81, and the conversion arm 81 rotates about the conversion arm shaft 84 as a fulcrum. As the conversion arm 81 rotates, the latch 82 and the connecting shaft 83 move leftward against the biasing force of the coil spring 91, and the latch 82 advances from the unlocked position to the locked position. As a result, the locking mechanism 49 enters an unlocked state that allows the door support member 48 to rotate from the closed position to the open position.

[0088] <Action and effect> As described above, in the locked state, the lock mechanism 49 prevents the door support member 48 from rotating from the closed position to the open position. Specifically, in the locked state, the latch 82 is located at a lock position facing the door support member 48 located at the closed position from one side in the rotation direction of the rotation shaft 46. Therefore, even if a human force is applied to the door support member 48 so that the door support member 48 rotates from the closed position to the open position, the door support member 48 comes into contact with the latch 82, thereby preventing the door support member 48 from rotating. This makes it possible to prevent the door support member 48 from being displaced from the closed position to the open position by human force, and to prevent the door main body 35 supported by the door support member 48 from being displaced from the position where the door support member 48 closes the component removal opening 33 from the storage space 31 of the component shelf 1.

[0089] As a result, it is possible to prevent the outlet 33 from being opened artificially, and to prevent parts from being taken out from the artificially opened outlet 33 and parts from being returned to the storage space 31 from the outlet 33. This makes it possible to prevent picking errors, such as taking out the wrong parts from the outlet 33.

[0090] From the locked state, the driving force of the motor 61 rotates the rotary shaft 46 to one side in the rotation direction (counterclockwise when viewed from the left), and the second operating member 67 (operating member 65) rotates from the locked position to the unlocked position, displacing the latch 82 from the locked position to the unlocked position in which the latch 82 retreats in the direction in which the latch 82 extends relative to the door support member 48. This results in an unlocked state in which the latch 82 does not face the door support member 48 from one side in the rotation direction of the rotary shaft 46, and the door support member 48 is allowed to rotate to one side in the rotation direction, that is, in the direction from the closed position to the open position.

[0091] In the unlocked state, when the pivot shaft 46 rotates further in one direction in the rotation direction and the first operating member 66 rotates from the closed position to the open position, the first operating member 66 presses the abutment member 76 as it rotates, causing the door support member 48 to rotate from the closed position to the open position around the support shaft 47 as a fulcrum, and the door body 35 supported by the door support member 48 opens the component removal opening 33 from the storage space 31 of the components shelf 1.

[0092] In this way, by rotating the rotating shaft 46 in one direction, it is possible to switch from a locked state to an unlocked state, and in the unlocked state, the door support member 48 can be rotated from a closed position to an open position to open the outlet 33 of the storage space 31 in which the part to be taken out by the worker is stored. Then, by the worker taking out the part from the outlet 33 that has been opened automatically (not manually), it is possible to prevent the occurrence of a picking error in which the wrong part is taken out from the parts shelf.

[0093] In order to prevent the door support member 48 from rotating, a configuration is considered in which a solenoid that moves the latch 82 linearly is provided. In this configuration, in the unlocked state, the latch 82 retreats to an unlocked position where it does not face the door support member 48 in the closed position, thereby allowing the door support member 48 to rotate from the closed position to the open position. On the other hand, in the locked state, the latch 82 advances from the open position side to a locked position where it faces the door support member 48 in the closed position, thereby preventing the door support member 48 from rotating from the closed position to the open position. However, not only is a solenoid added separately from the motor 61, but the addition of the solenoid requires a signal line for inputting an operation signal to the solenoid, which increases the number of parts. In addition, it is necessary to adjust the input timing of the operation signal of the motor 61 and the operation signal of the solenoid, which makes signal control complicated.

[0094] In contrast, the lock mechanism 49 is switched between the locked state and the unlocked state by the rotation of the second operating member 67, and does not require a solenoid, so the number of parts is fewer than in a configuration with a solenoid, and the signal control program is simpler because it only requires control of the operating signal of the motor 61. As a result, the size and cost of the door opening and closing device with the lock mechanism 49 can be reduced compared to a configuration with a solenoid.

[0095] <Modification> Although one embodiment of the present invention has been described above, the present invention can be embodied in other forms.

[0096] Fig. 9 is a left perspective view of a door opening and closing device 36 according to a modified example, and Fig. 10 is a left side view thereof. In Figs. 9 and 10, the cover portion 55 of the base frame 53 and the cover 57 of the lock mechanism 49 are omitted.

[0097] In the embodiment described above, as shown in Fig. 1, a parts shelf door 34 is provided on a parts shelf 1 in which the left front vertical frame 11L and the right front vertical frame 11R are vertically erected on the floor surface of a production factory, and when the door support member 48 is in the closed position, the tips of the left support arm 51 and the right support arm 52 of the door support member 48 of the door opening and closing device 36 extend downward from the base end extending downward and forward. With this configuration, when the door main body 35 supported by the door support member 48 closes the outlet 33 of the storage space 31, the door main body 35 extends in the vertical direction in parallel with the left front vertical frame 11L and the right front vertical frame 11R.

[0098] However, some parts shelves 1 have the left front vertical frame 11L and the right front vertical frame 11R erected on the floor surface of the production factory at an incline upward toward the rear. When a parts shelf door 34 is provided on this parts shelf 1, if the tips of the left support arm 51 and the right support arm 52 of the door support member 48 extend downward from their base ends extending downward and forward with the door support member 48 in the closed position, the door main body 35 will not be parallel to the left front vertical frame 11L and the right front vertical frame 11R and will enter the storage space 31.

[0099] Therefore, when the left front vertical frame 11L and the right front vertical frame 11R of the parts shelf 1 are inclined at an angle α upward toward the rear with respect to the vertical direction (the direction perpendicular to the floor surface of the production factory), the rotation angle of the motor 61 is 0°, and as shown in Fig. 9, in a state in which one surface 73 of the base end portion 71 of the first operating member 66 abuts against the abutted portion 78 of the abutted member 76, that is, in a state in which the door support member 48 is in the closed position, the angular position of the door support member 48 is adjusted so that the tip portions (frame-shaped portion 54 of the base frame 53) of the left support arm 51 and the right support arm 52 of the door support member 48 extend in a direction inclined at an angle α upward toward the rear with respect to the vertical direction. As a result, when the door support member 48 is in the closed position, the door main body 35 is parallel to the left front vertical frame 11L and the right front vertical frame 11R and does not enter the storage space 31, and properly closes the outlet 33 of the storage space 31.

[0100] In this case, in the initial state where the rotation angle of the motor 61 is 0°, the second operating member 67 located in the locked position presses the operated portion 85 of the conversion arm 81 of the locking mechanism 49 rearward, and the mounting angle of the locking mechanism 49 relative to the device body 41 is adjusted so that the latch operating portion 86 of the conversion arm 81 is located at the rightmost position. That is, the locking mechanism 49 is mounted with its angle adjusted relative to the device body 41 so that the rear surface of the base 56 extends at an angle α inclined upward toward the rear with respect to the vertical direction.

[0101] In this manner, the door opening and closing device 36 is configured so that the mounting angle of the door support member 48 and the lock mechanism 49 relative to the device body 41 is adjustable.

[0102] In addition, in the above-described embodiment, the rotating shaft 46 is the output shaft of the motor 61, but the rotating shaft 46 may be configured as a separate part from the output shaft of the motor 61, and the output shaft of the motor 61 may be directly connected to the rotating shaft 46, or the rotation of the output shaft of the motor 61 may be transmitted via a transmission mechanism such as a gear.

[0103] In the above embodiment, the operating member 65 includes the first operating member 66 and the second operating member 67, and the first operating member 66 and the second operating member 67 are integral and rotate together with the rotating shaft 46. However, the present invention is not limited to this configuration, and the first operating member 66 and the second operating member 67 may not be integral, but may be arranged side by side in the axial direction (left-right direction) of the rotating shaft 46 and rotate together with the rotating shaft 46.

[0104] In addition, a configuration may be adopted in which two rotation shafts that rotate by the driving force of the motor 61 are provided, and the first operating member 66 rotates integrally with one of the rotation shafts, and the second operating member 67 rotates integrally with the other rotation shaft.

[0105] However, with the configuration of the above-described embodiment, the first operating member 66 and the second operating member 67 are integrated, so that the space they occupy can be reduced in the axial direction, and the size of the door opening and closing device 36 can be reduced.

[0106] Although the support shaft 47 is provided on the same axis as the rotating shaft 46 in the above embodiment, the support shaft 47 may be provided on an axis different from that of the rotating shaft 46 .

[0107] Although the contact member 76 is formed separately from the door support member 48 and attached (fixed) to the door support member 48, it may be formed integrally with the door support member 48.

[0108] In addition, in the above-described embodiment, the parts shelf door 34 provided on the parts shelf 1 and the door opening and closing device 36 included in the parts shelf door 34 were discussed; however, the door opening and closing device of the present invention can be used as a device for opening and closing various door bodies, such as automatic doors installed at the entrances of buildings, rear doors of taxis, and back doors (power rear gates) of station wagons, etc., so long as the door is opened and closed by rotation about an axis extending in a predetermined direction.

[0109] In addition, various design modifications can be made to the above-described configuration within the scope of the claims. [Explanation of symbols]

[0110] 1: Parts shelf 31: Storage space 33: Outlet 34: Parts shelf door 35: Door body 36: Door opening and closing device 46: Rotating shaft 47: Support shaft 48: Door support member 49: Locking mechanism 61: Motor (drive source) 65: Operation parts 66: First operating member 67: Second operating member 76: Contact member 78: Abutted part 81: Transformation arm 82: Latch 83:Connection shaft 84: Conversion arm axis (conversion axis line) 85: Operated part 86: Latch operation part 91: Coil spring (biasing member)

Claims

1. A driving source; a rotation shaft extending in a predetermined direction and rotating by a driving force of the driving source; a first operating member extending in a direction intersecting the predetermined direction and rotating about a first axis extending in the predetermined direction in response to rotation of the rotation shaft; a second operating member extending in a direction intersecting the predetermined direction and rotating about a second axis extending in the predetermined direction in response to rotation of the rotation shaft; A door support member that is rotatable about a third axis extending in the predetermined direction and supports the door main body; a contact member extending from the door support member into a rotation trajectory of the first operating member and provided so that the first operating member, which rotates from a closed position to an open position, contacts the contact member from the closed position side; a locking mechanism configured to switch between a locked state that prevents the door support member from rotating from a closed position to an open position and an unlocked state that allows the door support member to rotate from the closed position to the open position in response to rotation of the second operating member between a locked position and an unlocked position.

2. The locking mechanism includes: a conversion arm that is rotatably provided around a conversion axis that extends in a direction intersecting the predetermined direction, and that integrally includes an operated portion that extends from the conversion axis within a rotation trajectory of the second operating member, and a latch operation portion that extends from the conversion axis in a direction intersecting both the direction of the conversion axis and the extension direction of the operated portion; A latch extending in a direction intersecting the direction of the conversion axis; a connecting shaft extending in the direction of the conversion axis and inserted through the latch operation portion and the latch, When the second operating member is in the unlocked position, the latch is in the unlocked position where the latch retreats in the direction in which the latch extends relative to the door support member, thereby entering the unlocked state.

2. The door opening and closing device with a locking mechanism according to claim 1, wherein when the second operating member is rotated from the unlocked position to the locked position, the second operating member presses the operated portion, causing the conversion arm to rotate around the conversion axis, and with the rotation of the conversion arm, the latch is positioned at a locking position facing the door support member positioned at the closed position from the open position side, thereby entering the locked state.

3. 3. The door opening and closing device with a locking mechanism according to claim 2, wherein the locking mechanism further comprises a biasing member that biases the latch from the locked position toward the unlocked position.

4. The door opening and closing device with a locking mechanism according to any one of claims 1 to 3, wherein the contact member is formed integrally with the door support member.

5. 5. The door opening and closing device with a locking mechanism according to claim 4, wherein the door support member is configured to rotate from the open position to the closed position by its own weight as the first operating member rotates from the open position to the closed position.

6. the first axis and the second axis are the same axis, The door opening and closing device with a locking mechanism according to any one of claims 1 to 3, wherein the first operating member and the second operating member are integral with each other, are arranged to rotate integrally with the pivot shaft, and extend from the pivot shaft in a direction intersecting the predetermined direction.

7. the first axis, the second axis, and the third axis are the same axis, 6. The door opening and closing device with a lock mechanism according to claim 5, wherein the door support member is provided rotatably about a support shaft different from the rotation shaft.

8. A door provided on a parts shelf having a storage space for storing parts, A door body that opens and closes an opening for removing parts from the storage space; a door opening and closing device for opening and closing the door body, The door opening and closing device is A driving source; a rotation shaft extending in a predetermined direction along one end edge of the outlet and rotating by a driving force of the driving source; an operating member provided to rotate integrally with the rotation shaft and extending from the rotation shaft in a direction intersecting the predetermined direction; A support shaft extending in the predetermined direction; A door support member that is rotatably provided around the support shaft as a fulcrum and supports the door main body; A conversion arm provided to be rotatable about a conversion axis extending in a direction intersecting the predetermined direction; A latch extending in a direction intersecting the direction of the conversion axis; a connecting shaft extending in the direction of the conversion axis and inserted through the conversion arm and the latch; In a locked state in which the operation member is located at a locked position, the latch is located at a locked position facing the door support member located at a closed position from one side in the rotation direction of the rotation shaft, From the locked state, the pivot shaft pivots to the one side in the pivot direction, and the operating member pivots from the locked position to the unlocked position, and the latch is displaced from the locked position to an unlocked position in which the latch retreats in a direction in which the latch extends relative to the door support member, thereby entering an unlocked state; In the unlocked state, the pivot shaft pivots to the one side in the pivot direction, and the operation member pivots from the closed position to the open position. As a result, the operation member presses the door support member, and the door support member pivots from the closed position to the open position about the support shaft. the operating member is configured such that, from an unlocked state in which the operating member is located at the unlocked position, the rotation shaft rotates to the other side opposite to the one side in the rotation direction, and as the operating member rotates from the unlocked position to the locked position, the operating member presses the conversion arm, causing the conversion arm to rotate about the conversion axis, and as the conversion arm rotates, the latch is displaced from the unlocked position to the locked position, The door body is configured to close the removal opening when the door support member is in the closed position, and to open the removal opening when the door support member is in the open position.

9. The door opening and closing device further includes a biasing member that biases the latch from the locked position toward the unlocked position, the conversion arm integrally includes an operated portion extending from the conversion axis within a rotation locus that the operation member describes between the locked position and the unlocked position, and a latch operation portion extending from the conversion axis in a direction intersecting both the direction of the conversion axis and the extension direction of the operated portion, The connecting shaft is inserted through the latch operation portion, As the rotation shaft rotates to the other side in the rotation direction from the unlocked state and the operating member rotates from the unlocked position to the locked position, the operating member presses the operated portion, and the conversion arm rotates about the conversion axis line against the biasing force of the biasing member, and the latch is displaced from the unlocked position to the locked position, 9. A door for a parts shelf as described in claim 8, wherein as the pivot shaft pivots from the locked state to the one side of the pivot direction and the operating member pivots from the locked position to the unlocked position, the biasing force of the biasing member displaces the latch from the locked position to the unlocked position and the conversion arm pivots around the conversion axis.

10. 10. A door for a parts shelf as described in claim 8 or 9, wherein the door support member is configured to rotate from the open position to the closed position under its own weight as the pivot shaft rotates to the other side of the pivot direction and the operating member rotates from the open position to the closed position.

11. A parts shelf having a storage space for storing parts, A door body that opens and closes an opening for removing parts from the storage space; a door opening and closing device for opening and closing the door body, The door opening and closing device is A driving source; a rotation shaft extending in a predetermined direction along one end edge of the outlet and rotating by a driving force of the driving source; an operating member provided to rotate integrally with the rotation shaft and extending from the rotation shaft in a direction intersecting the predetermined direction; A support shaft extending in the predetermined direction; A door support member that is rotatably provided around the support shaft as a fulcrum and supports the door main body; A conversion arm provided to be rotatable about a conversion axis extending in a direction intersecting the predetermined direction; A latch extending in a direction intersecting the direction of the conversion axis; a connecting shaft extending in the direction of the conversion axis and inserted through the conversion arm and the latch so as to be rotatable relative to each other; In a locked state in which the operation member is located at a locked position, the latch is located at a locked position facing the door support member located at a closed position from one side in the rotation direction of the rotation shaft, From the locked state, the pivot shaft pivots to the one side in the pivot direction, and the operating member pivots from the locked position to the unlocked position, and the latch is displaced from the locked position to an unlocked position in which the latch retreats in a direction in which the latch extends relative to the door support member, thereby entering an unlocked state; In the unlocked state, the pivot shaft pivots to the one side in the pivot direction, and the operation member pivots from the closed position to the open position. As a result, the operation member presses the door support member, and the door support member pivots from the closed position to the open position about the support shaft. the operating member is configured such that, from an unlocked state in which the operating member is located at the unlocked position, the rotation shaft rotates to the other side opposite to the one side in the rotation direction, and as the operating member rotates from the unlocked position to the locked position, the operating member presses the conversion arm, causing the conversion arm to rotate about the conversion axis, and as the conversion arm rotates, the latch is displaced from the unlocked position to the locked position, The door body is configured to close the removal opening when the door support member is in the closed position, and to open the removal opening when the door support member is in the open position.

12. The door opening and closing device further includes a biasing member that biases the latch from the locked position toward the unlocked position, the conversion arm integrally includes an operated portion extending from the conversion axis within a rotation locus that the operation member describes between the locked position and the unlocked position, and a latch operation portion extending from the conversion axis in a direction intersecting both the direction of the conversion axis and the extension direction of the operated portion, The connecting shaft is inserted into the latch operation portion so as to be rotatable relative to the latch operation portion, As the rotation shaft rotates to the other side in the rotation direction from the unlocked state and the operating member rotates from the unlocked position to the locked position, the operating member presses the operated portion, and the conversion arm rotates about the conversion axis line against the biasing force of the biasing member, and the latch is displaced from the unlocked position to the locked position, 12. The parts shelf of claim 11, wherein as the pivot shaft pivots to one side of the pivot direction from the locked state and the operating member pivots from the locked position to the unlocked position, the biasing force of the biasing member displaces the latch from the locked position to the unlocked position and the conversion arm pivots around the conversion axis.

13. The parts shelf according to claim 11 or 12, wherein the door support member is configured to rotate from the open position to the closed position under its own weight as the pivot shaft rotates to the other side of the pivot direction and the operating member rotates from the open position to the closed position.

Images