JP7618179B2 - Door opening/closing device with lock mechanism, door for parts shelf and parts shelf - Google Patents

Description

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.

Traditionally, factories that produce automobiles and other products have assembly lines where parts are attached to workpieces transported by conveyors, for example.

In addition, production plants with assembly lines are equipped with parts shelves that store multiple types of parts. The parts shelves are 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 shelves and delivered to the assembly line.

Therefore, if a mistake (picking error) occurs in which the wrong part (a part other than the part that is supposed to be attached to the work) is taken from the parts shelf, a problem can occur on the assembly line where the wrong part is attached to the work.

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, and the removal opening of the storage space in which the part to be removed by the worker is stored is automatically opened. Therefore, if the worker removes the part from the open removal opening, it is possible to prevent the wrong part from being removed from the parts shelf.

JP 2017-13953 A

However, in conventional parts shelves with doors, workers may manually open the door to the outlet and take out the wrong parts from that outlet. Also, workers may manually open the door to the outlet and return excess parts that have been 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 have been returned may automatically open, and the wrong parts may be taken out from that outlet.

The object of the present invention is to provide a door opening/closing device with a locking mechanism, a door for a parts shelf, and a parts shelf that can prevent the door support member that supports the door body from being manually displaced from the closed position to the open position.

In order to achieve the above object, a door opening/closing device with a locking mechanism according to one aspect of the present invention comprises a drive source, a pivot shaft extending in a predetermined direction and pivoting due to the drive force of the drive source, a first operating member extending in a direction intersecting the predetermined direction and pivoting about a first axis extending in the predetermined direction in association with the pivoting of the pivot shaft, a second operating member extending in a direction intersecting the predetermined direction and pivoting about a second axis extending in the predetermined direction in association with the pivoting of the pivot shaft, and a third operating member that is rotatable about a third axis extending in the predetermined direction and supports a door body. It includes a door support member, an abutment member that extends from the door support member into the rotation trajectory of the first operating member and is provided so that the first operating member that rotates from the closed position to the open position abuts against it from the closed position side, and a locking mechanism that is 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.

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.

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 human force is applied to the door support member to rotate it 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, it is possible to prevent the door support member from being displaced from the closed position to the open position by human force.

The locking mechanism may be configured to be rotatable around a conversion axis extending in a direction intersecting a predetermined direction, and to include a conversion arm having integrally therewith an operated part extending from the conversion axis within the rotation trajectory of the second operating member, and a latch operating part extending 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 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 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 it extends relative to the door support member, thus entering an unlocked state; when the second operating member is rotated from the unlocked position to the locked position, the second operating member presses the operated part, causing the conversion arm to rotate about the conversion axis, and as the conversion arm rotates, the latch moves from the unlocked position to a locked position facing the door support member, which is in the closed position, from the open position side, thus entering a locked state.

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

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

The locking mechanism may further include a biasing member that biases the latch from the locked position toward the unlocked position.

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 part is released, the biasing force of the biasing member displaces the latch from the locked position to the unlocked position and the conversion arm rotates around the conversion axis.

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.

In addition, 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 first operating member rotates from the open position to the closed position.

This configuration allows the door support member to be displaced from the open position to the closed position without applying an external force to the door support member.

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.

This configuration reduces the number of parts and makes it possible to miniaturize the size of the door opening and closing device with locking mechanism.

The first axis, the second axis, and the third axis may be the same axis, and the door support member may be provided so as to be rotatable about a support axis separate from the rotation axis.

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 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 the 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 fulcrum for rotating the operating member around 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. 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 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. 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, causing the operating member to rotate from the unlocked position to the locked position, causing the operating member to press the conversion arm, causing the conversion arm to rotate around the conversion axis, and as the conversion arm rotates, the latch displaces 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.

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 pivot shaft. Therefore, even if 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 abuts against the latch, 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 part removal opening from the storage space of the parts shelf.

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. This makes it possible to prevent picking errors, such as the wrong parts being taken out of the outlet, from occurring.

When the rotary shaft rotates from the locked state to one side in the rotation direction due to the driving force of the drive source, 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 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 rotary 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 rotary shaft further rotates to one side in the rotation direction and the operating member rotates from the closed position to the open position, the operating member presses the door support member as it rotates, and the door support member rotates from the closed position to the open position around the support shaft as a fulcrum, and the door body supported by the door support member opens the opening for removing parts from the storage space of the parts shelf.

In this way, by rotating the pivot shaft in one direction, the state can be switched 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 removed by the worker is stored. Then, by the worker removing the part from the outlet that has been opened automatically (not manually), it is possible to prevent picking errors in which the wrong part is removed from the parts shelf.

As with the locking mechanism described above, this configuration does not require a solenoid to switch between the locked and unlocked states, so there are fewer parts than in a configuration that includes a solenoid, and the signal control program is simpler because it only requires control of the operating signal of the drive source. As a result, the size and cost of the door opening and closing device can be reduced compared to a configuration that includes a solenoid.

A parts shelf according to yet another aspect of the present invention is a parts shelf having a storage space for storing parts, and includes 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 the 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 is displaced from the locked position to the unlocked position 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 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 pivot. From the unlocked state in which the operating member is in the unlocked position, the pivot rotates to the other side opposite to the one side in the pivot direction, causing the operating member to rotate from the unlocked position to the locked position, causing the operating member to press the conversion arm, causing the conversion arm to rotate around 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.

This configuration can achieve the same effect as the above-mentioned component shelf door configuration.

The door opening and closing device may further include a biasing member that biases the latch from the locked position toward the unlocked position. The conversion arm may integrally include an operated portion that extends from the conversion axis within a rotation locus that the operating member describes between the locked position and the unlocked position , and a latch operating 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, and the connecting shaft may be inserted through the latch operating portion. In this case, as the pivot shaft rotates from the unlocked state to the other side in the rotation direction and the operating member rotates from the unlocked position to the locked position, the operating member presses the operated part, causing the conversion arm to rotate around the conversion axis against the biasing force of the biasing member and the latch to displace from the unlocked position to the locked position, and as the pivot shaft rotates from the locked state to one side in the rotation direction 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 due to the biasing force of the biasing member and the conversion arm rotates around the conversion axis.

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 rotation direction and the operating member rotates from the open position to the closed position.

This configuration allows the door support member to be displaced from the open position to the closed position without applying an external force to the door support member.

This invention makes it possible to prevent the door support member that supports the door body from being manually displaced from the closed position to the open position.

FIG. 2 is a right perspective view of a parts shelf according to an embodiment of the present invention. 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. FIG. 2 is a right perspective view (perspective view seen from the upper right front) of the door opening and closing device. 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°. 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 35°. FIG. 2 is a left perspective view of the door opening and closing device, showing a state when the motor is at an angular position of 90°. 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 180°. FIG. FIG. 11 is a left perspective view of a door opening and closing device according to a modified example. FIG. 10 is a left side view of the door opening and closing device shown in FIG. 9 .

The following describes in detail an embodiment of the present invention with reference to the attached drawings.

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

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

The side of the parts shelf 1 where the removal port 33 described below is provided is referred to as the front. For the sake of convenience in the following explanation, when facing the front of the parts shelf 1, the front direction is referred to as the front of the parts shelf 1, the back direction is referred to as the rear of the parts shelf 1, the left direction is referred to as the left side of the parts shelf 1, and the right direction is referred to as the right side of the parts shelf 1.

The parts shelf 1 has 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.

In FIG. 1, the left front vertical frame 11L, right front vertical frame 11R, left rear vertical frame 12L, right rear vertical frame 12R, upper left horizontal frame 13U, lower left horizontal frame, upper right horizontal frame 14U, 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 tube-like or square columnar.

The left front vertical frame 11L, right front vertical frame 11R, left rear vertical frame 12L and right rear vertical frame 12R are all vertically erected 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 right rear vertical frame 12R are arranged with a gap between them behind the left front vertical frame 11L and right front vertical frame 11R, respectively.

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.

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

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

The lower left horizontal frame and the lowest front horizontal frame 15 are connected to the left front vertical frame 11L by joints 22LF. The lower right horizontal frame 14L and the lowest front horizontal frame 15 are connected to the right front vertical frame 11R by joints 22RF. The lower left horizontal frame and the lowest rear horizontal frame 16 are connected to the left rear vertical frame 12L by joints (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 joints 22RR.

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.

The four rear cross frames 16 (hereinafter referred to as "middle cross frames 16") other than the top and bottom ones are arranged 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 arranged 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 arranged 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 arranged 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 arranged 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.

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 relative to the front horizontal frame 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.

The parts shelf 1 has storage spaces 31. The storage spaces 31 are set up 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. As one storage space 31 is set up on two shelf frames 17, the parts shelf 1 has a total of 3 x 4 storage spaces 31.

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 workers performing picking work in the production factory can take out parts stored in the storage space 31 from the outlet 33.

The number of left front vertical frame 11L, right front vertical frame 11R, left rear vertical frame 12L, right rear vertical frame 12R, upper left horizontal frame 13U, lower left horizontal frame, upper right horizontal frame 14U, lower right horizontal frame 14L, front horizontal frame 15, rear horizontal frame 16, and shelf frame 17 is not limited to the number mentioned above. For example, an intermediate vertical frame that is vertically erected on the floor 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 placed between the removal openings 33 lined up in the left-right direction so as not to interfere with the removal of parts from the removal openings 33.

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

<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.

Figure 2 is a left perspective view (perspective view seen from the upper left front) of the door opening/closing device 36. Figure 3 is a right perspective view (perspective view seen from the upper right front) of the door opening/closing device 36.

The door opening/closing device 36 has a device body 41.

The housing 42 of the device main body 41 is formed in a generally rectangular parallelepiped shape. The housing 42 is arranged 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 underside of the housing 42 so as to protrude downward.

The door opening/closing device 36 also includes a pivot shaft 46 (see FIG. 4), a support shaft 47, a door support member 48, and a locking mechanism 49.

The support shaft 47 is arranged on the same axis as the rotating shaft 46. In other words, the support shaft 47 is arranged to have the same axis as the rotating shaft 46.

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 extend further. 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 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 body 35 is fixed to the frame-shaped portion 54, for example, by 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.

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. Figures 2 and 3 show the latch 82 protruding to the right from the right side surface of the base 56 as part of the locking mechanism 49.

Figures 4, 5, 6 and 7 are left perspective views of the door opening/closing device 36 (perspective views seen from the upper left front at a different angle than the left perspective view shown in Figure 2), with the cover portion 55 of the base frame 53 and the cover 57 of the locking mechanism 49 omitted.

As shown in FIG. 4, a motor 61 (an example of a drive source) is housed within the housing 42. The rotating shaft 46 is the output shaft of the motor 61, and the motor 61 is disposed in such a manner that 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.

Figure 8 is a plan view of the door opening/closing device 36, with the cover portion 55 of the base frame 53 and the cover 57 of the locking mechanism 49 omitted.

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 pivot 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 around the same axis as the axis of the pivot shaft 46, with the left support shaft 63 and the right support shaft 64 as fulcrums, respectively.

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 direction in which the base end 71 extends. 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 the tip surface 75 of the tip end 72 of the first operating member 66 in the direction in which the tip end 72 extends. 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.

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 generally L-shaped and integrally includes a fixed portion 77 that extends along the left support arm 51 and an abutment portion 78 that extends and bends 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.

The locking mechanism 49 includes a conversion arm 81, a latch 82, and a connecting shaft 83.

A conversion arm shaft 84 extending in the vertical direction is erected on the base 56 of the locking mechanism 49. The conversion arm 81 is rotatable about the conversion arm shaft 84. The conversion arm 81 is generally L-shaped and integrally includes an operated part 85 extending from the conversion arm shaft 84 within the rotation trajectory of the second operating member 67, and a latch operating part 86 extending at a right angle to the operated part 85.

The base 56 is also provided with a right side wall 87, the right side of which constitutes the right side of the base 56, and an opposing wall 88 that faces the right side wall 87 from the left and with a gap between them. 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 to the right from the right side of the base 56 (right side wall 87).

The connecting shaft 83 is rotatably inserted into the latch 82. In addition, a U-shaped groove 89 is formed in the latch operating part 86 of the conversion arm 81, with a U-shaped notch cut out from its tip, and the connecting shaft 83 is inserted into the U-shaped groove 89 with some play.

A coil spring 91 is provided in a compressed state between the connecting shaft 83 and the 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.

<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 provided with a control circuit incorporating 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 for controlling 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 by an operator from the parts shelf 1 and the order in which they should be taken out.

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 the lamp 44, as well as a motor forward rotation signal and a motor reverse rotation signal for the motor 61, to the control circuit of the storage space 31 (removal opening 33) from which the part is to be removed, according to the order in which the parts are to be removed.

In the initial state before the motor 61 is activated, as shown in FIG. 4, the second operating member 67 is in the locked position. The second operating member 67 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 in the rightmost position. Due to this position of the conversion arm 81, the latch 82 of the locking mechanism 49 is in the locked position where it protrudes most from the right side surface of the base 56. The door support member 48 is 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 body 35 supported by the door support member 48 extends in the vertical direction to close the access opening 33 of the storage space 31.

In the initial state, one surface 73 of the base end 71 of the first operating member 66 abuts against the abutment portion 78 of the abutment member 76, and one surface 74 of the tip end 72 of the first operating member 66 is spaced from the abutment 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 body 35 is lifted forward, the abutment 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 the front and above. Therefore, even if a manual force large enough to rotate the first operating member 66 is applied from the abutment 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 locking mechanism 49 is in a locked state that prevents the door support member 48 from rotating from the closed position to the open position.

In the initial state, the angular position of the motor 61 is set to 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.

When the picking operation starts, the control device outputs a lamp illumination signal and a motor forward rotation signal. 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 with the lit lamp 44 is located. 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 the motor 61 rotates forward, 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.

The angle between 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°, so when the rotation angle of the motor 61 reaches 35°, one surface 74 of the tip end 72 abuts against the abutted portion 78 of the abutted member 76, as shown in FIG. 5. At this time, one surface 74 of the tip end 72 has not yet pressed against the abutted portion 78 of the abutted member 76, and the door support member 48 remains in the closed position. The position of the first operating member 66 at this time becomes the closed position.

Meanwhile, the connecting shaft 83 is biased to the right by the biasing force (elastic force) of the coil spring 91, so that as the second operating member 67 rotates, the connecting shaft 83 moves to the right, the latch 82 moves to the right, and the conversion arm 81 rotates around the conversion arm shaft 84 as a fulcrum. Then, by the time 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 an unlocked position where it does not face the left support arm 51 of the door support member 48 in the direction of rotation of the left support arm 51. By the latch 82 retreating to the unlocked position, 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.

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 72 of the first operating member 66 presses the abutted portion 78 of the abutment member 76 in a counterclockwise direction as viewed from the left. As a result, as shown in FIG. 6, the door support member 48 begins to rotate counterclockwise as viewed from the left together with the abutted portion 78, with the support shaft 47 as a fulcrum.

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. As the door support member 48 rotates from the closed position to the open position, the door body 35 supported by the door support member 48 rotates 145° from a state in which the access opening 33 of the storage space 31 is closed, and opens the access opening 33.

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 72 of the first operating member 66 abuts against the abutment portion 78 of the abutment member 76, preventing the door support member 48 from rotating from the open position to the closed position under its own weight.

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

When a 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 a motor reverse 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 reverse. As the motor 61 rotates in reverse, the rotating shaft 46 rotates clockwise 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.

As the first operating member 66 rotates clockwise when 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 angle position of 180° to an angle 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 access opening 33 of the storage space 31 is closed by the door body 35 supported by the door support member 48.

When the motor 61 then 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, it presses the operated portion 85 of the conversion arm 81, causing the conversion arm 81 to rotate around the conversion arm shaft 84 as a fulcrum. As the conversion arm 81 rotates, the latch 82 and connecting shaft 83 move to the left 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.

<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 abuts against 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 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.

As a result, the outlet 33 can be prevented from being opened manually, and parts can be prevented from being taken out from the outlet 33 that has been opened manually, and parts can be prevented from being returned to the storage space 31 from the outlet 33. This can prevent picking errors, such as the wrong part being taken out from the outlet 33.

From the locked state, the driving force of the motor 61 rotates the pivot 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 it 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 pivot 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.

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 abutting 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 part removal opening 33 from the storage space 31 of the parts shelf 1.

In this way, by rotating the pivot shaft 46 in one direction, the state can be switched from the locked state to the unlocked state, and in the unlocked state, the door support member 48 can be rotated from the closed position to the open position to open the removal port 33 of the storage space 31 in which the part to be removed by the worker is stored. Then, by the worker removing the part from the removal port 33 that has been opened automatically (not manually), the occurrence of a picking error in which the wrong part is removed from the parts shelf can be prevented.

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, 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, 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 to input an operating signal to the solenoid, which increases the number of parts. In addition, it is necessary to adjust the input timing of the operating signal of the motor 61 and the operating signal of the solenoid, making signal control complicated.

In contrast, the locking mechanism 49 is switched between locked and unlocked states by rotating the second operating member 67, and does not require a solenoid, so it requires fewer parts than a configuration that includes a solenoid, and since it only requires control of the operating signal of the motor 61, the signal control program is simpler. As a result, the size and cost of the door opening and closing device with the locking mechanism 49 can be reduced compared to a configuration that includes a solenoid.

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

Figure 9 is a left perspective view of the door opening/closing device 36 according to a modified example, and Figure 10 is a left side view thereof. In Figures 9 and 10, the cover portion 55 of the base frame 53 and the cover 57 of the locking mechanism 49 are omitted.

In the above embodiment, as shown in FIG. 1, a parts shelf door 34 is provided on a parts shelf 1 in which a left front vertical frame 11L and a right front vertical frame 11R are vertically erected on the floor 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/closing device 36 extend downward from the base end that extends downward and forward. With this configuration, when the door body 35 supported by the door support member 48 closes the access opening 33 of the storage space 31, the door body 35 extends in the vertical direction parallel to the left front vertical frame 11L and the right front vertical frame 11R.

However, some parts shelves 1 have a left front vertical frame 11L and a right front vertical frame 11R that are erected on the floor of a production factory at an upward angle to 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 that extend downward and forward with the door support member 48 in the closed position, the door 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.

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, when one surface 73 of the base end portion 71 of the first operating member 66 is in contact with the contact portion 78 of the contact member 76, that is, when 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 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 closes the removal opening 33 of the storage space 31 well.

In this case, in the initial state where the rotation angle of the motor 61 is 0°, the second operating member 67, which is located in the locked position, presses the operated portion 85 of the conversion arm 81 of the locking mechanism 49 rearward, and adjusts the mounting angle of the locking mechanism 49 relative to the device body 41 so that the latch operating portion 86 of the conversion arm 81 is located in the rightmost position. In other words, the locking mechanism 49 is attached 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.

In this way, the door opening/closing device 36 is configured so that the mounting angle of the door support member 48 and the locking mechanism 49 relative to the device body 41 can be adjusted.

In addition, in the above 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.

The above describes a configuration in which the operating member 65 includes a first operating member 66 and a 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, this is not limiting, 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 and right direction) of the rotating shaft 46 and each rotate together with the rotating shaft 46.

Alternatively, a configuration may be adopted in which two rotation shafts that rotate due to the driving force of the motor 61 are provided, 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.

However, in 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/closing device 36 can be reduced.

Although the support shaft 47 is described as being arranged on the same axis as the rotating shaft 46, it may be arranged on an axis different from that of the rotating shaft 46.

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.

In addition, in the above embodiment, the parts shelf door 34 provided on the parts shelf 1 and the door opening/closing device 36 included in the parts shelf door 34 were described. However, the door opening/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 entrance of a building, rear doors of a taxi, and back doors (power rear gates) of a station wagon, etc., as long as the door is opened and closed by rotating around an axis extending in a predetermined direction.

In addition, various design modifications can be made to the above-mentioned configuration within the scope of the claims.

1: Parts shelf 31: Storage space 33: Access opening 34: Parts shelf door 35: Door body 36: Door opening/closing device 46: Rotating shaft 47: Support shaft 48: Door support member 49: Locking mechanism 61: Motor (driving source)
65: Operating member 66: First operating member 67: Second operating member 76: Contact member 78: Contact portion 81: Converting arm 82: Latch 83: Connecting shaft 84: Converting arm shaft (conversion axis)
85: Operated portion 86: Latch operating portion 91: Coil spring (biasing member)

Claims (13)

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. 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. 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. A door opening and closing device with a locking mechanism according to any one of claims 1 to 3, wherein the contact member is integrally formed with the door support member. 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. 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. 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. 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 around 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. 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. The door for a parts shelf according to claim 8 or 9, wherein the door support member is configured to rotate from the open position to the closed position by its own weight as the pivot shaft rotates to the other side in the pivot direction and the operating member rotates from the open position to the closed position. 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. 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. 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 by 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