JP5038977B2 - Storage device door opening and closing mechanism - Google Patents

Description

  The present invention relates to a door opening / closing mechanism in a storage device.

  2. Description of the Related Art Conventionally, a door that is attached to an opening of a storage device so as to be freely opened and closed is locked with an electric lock, and an electromagnetic solenoid is used as the electric lock (for example, see Patent Document 1).

  In the conventional example shown in FIG. 9, a locked portion 32a is provided on the rear surface of a door that can be freely opened and closed in the storage device main body, and a locking portion 21a installed at the edge of the opening of the storage device main body. And a second locking portion 22a that engages with a movable plunger 6b that can be moved forward and backward provided in an electric lock 6a made of an electromagnetic solenoid. The door is locked to the storage device body by locking the locked portion 32a provided on the door with the locking portion 21a provided on the locking tool 2a. Then, when the electric lock 6a releases the locking of the second locking portion 22a, the locking portion 21a is rotated from the inside of the storage device body to the outside of the storage device body so as to automatically open the door. It has become. In addition, 4a has shown the torsion coil spring which provides the rotational force for rotating a locking tool centering on an axis | shaft with respect to the storage apparatus main body outer side from the storage apparatus main body inner side.

  In the operation of the door opening / closing mechanism, when the electric lock 6a receiving the unlocking signal retracts the movable plunger 6b to release the lock, the lock 2a is stored according to the urging force of the torsion coil spring 4a. Since the rotation from the inside of the apparatus main body to the outside of the storage device is centered on the axis and at the same time the locking part 21a moves outward, the engagement between the locked part 32a provided on the door and the locking part 21a. The stop is released.

This is used, for example, in a mail box installed in a lobby of an apartment house. For placing a delivery item etc. on the back side (that is, the outside of the building) by arranging the door surface along the wall surface on the lobby side (that is, the inside side of the building) of the storage box as the storage device main body. It is installed to form an inlet.
JP-A-8-260785

  By the way, when a large delivery item that is longer than the depth dimension of the storage box is forcibly packed into the mail box from the slot, the door closing the storage box is pushed with a strong force from the inside of the mail box. At this time, the locked portion 32a installed on the door pulls the locking portion 21a, and the locking tool 2a at the door closing position is forcibly moved from the inside of the storage device body toward the outside of the storage device body. Therefore, a rotational force from the inside of the storage device main body toward the outside is forcibly applied to the locking device 2a, and a rotational force by the torsion coil spring 4a is also applied to lock the second locking portion 22a. A strong force is applied in a direction perpendicular to the axis of the movable plunger 6b of the electric lock 6a. Such a load in the radial direction on the movable plunger 6b may cause the movable plunger 6b to bend or bend, or may cause the movable plunger 6b to be caught even if it is not deformed. In this case, since the movable plunger 6b cannot be retracted into the electromagnetic solenoid body as the electric lock 6a, the door of the storage box cannot be unlocked.

  The present invention has been made in view of the above-described conventional problems, and its object is to reliably open the door even when a strong force is applied from the inside of the storage device main body toward the door. The object is to provide a door opening and closing mechanism that can be locked.

  In order to solve the above-mentioned problem, in the invention according to claim 1, the storage device main body 1 including the insertion port 12 for loading a delivery product on the back surface of the opening, and the locking portion provided at the edge of the opening A pivotable locking member 2 having a door 21, a door 3 that is pivotally connected by a pivotal support provided at an edge of the opening of the storage device body 1, and the opening can be opened and closed; 3 to be locked by the locking part 21 when the locking tool 2 is in the door closing position by closing the door 3 and the locking part 21 in the storage device main body. The main part of the storage device 7 is composed of a drive unit 4 that is pivoted from the side to the outside of the storage device main body to open the door 3, and is provided on the storage device main body 1. An arm portion 5 that holds the locking device 2 in the door closed position against the force of the drive portion 4 that rotates in the opening direction of the door 3; A drive mechanism 6 that opens the door 3 by releasing the locking at the door closing position of the locking tool 2 by driving the portion 5, and the door 3 in a state where the locking tool 2 is positioned at the door closing position. The direction of the force that the locking tool 2 exerts on the arm portion 5 when a rotational force is applied in the opening direction is substantially the same as the direction in which the locking of the arm portion 5 at the door closing position is released. It is characterized by comprising.

  With this configuration, even when the door 3 is pressed from the inside of the storage device main body 1 toward the door 3 with a strong force, the locked state in the locked state can be reliably released, so that the door is reliably The effect is that 3 can be unlocked.

  In the invention according to claim 2, in the invention according to claim 1, the arm portion 5 is rotatably supported by a shaft 54 provided substantially at the center of the vertically long main body portion 51. A locking piece 52 that locks the second locking portion 22 provided in the locking tool 2 is provided on the upper portion of the main body portion 51, and a driven portion 53 that is driven by the drive mechanism 6 is provided on the lower portion of the main body portion 51. It is a feature.

  With this configuration, in addition to the effect of the first aspect, the arm portion 5 can be released from the locked state with the locking tool 2 along with the rotation operation. The locking device 2 can be easily unlocked simply by operating, and the arm portion 5 can be easily mounted simply by providing the shaft 54 when the arm portion 5 is mounted to the storage device body 1. Has an effect.

  Further, in the invention according to claim 3, in the invention according to claim 2, the drive mechanism 6 is driven by the rotary drive device 61, and is rotatably supported by the rotary drive device 61. It comprises the driven portion 53 and an eccentric cam 62 for separating and pressing.

  With this configuration, since the eccentric cam 62 can be positioned via the driven portion 53 and the gap S provided in the arm portion 5 when the rotation of the rotation driving device 61 is activated, the rotation driving device 61 is activated with low activation. There is an advantageous effect of being able to start with torque.

  According to the present invention, even when a strong force is pressed against the door from the inside of the storage device main body, the door can be unlocked reliably, and the rotation drive device provided in the storage device main body receives the door. Since the load can be reduced, there is an advantageous effect of improving the durability of the rotary drive device.

  The present invention will be described below with reference to the accompanying drawings.

  In the embodiment of the present invention shown in the accompanying drawings, as shown in FIG. 7 and FIG. 8, a storage device body 1 constituting the main body of the storage device 7 is loaded with a delivery item or the like on the opening and the back side of the opening. An opening 12 is provided, and a door 3 is attached to the opening so as to be opened and closed. One end of the door 3 is pivotally connected by a pivotal support provided at the edge (one side edge) of the opening of the storage device body 1, and the other end of the door 3 (opposite to the pivotal support). A locked portion 32 is provided on the back side of the end portion. In the embodiment, the locked portion 32 is configured by installing a locked rod 33 between the tips of a pair of protruding pieces protruding from the back surface of the door 3.

  A lock mechanism housing 8 as shown in FIGS. 1 to 5 is attached to the edge of the opening of the storage device main body 1 opposite to the pivotal support portion to which the door 3 is attached as shown in FIG. The locking mechanism 2, the arm portion 5, and the drive mechanism 6 are attached in the lock mechanism housing 8.

  As shown in FIG. 1, the locking tool 2 is disposed on the locking tool 2 by pivotally supporting a substantially center of the locking tool 2 on the lock mechanism housing 8 by a shaft 23. The locked portion 32 provided on the door 3 is fitted into the substantially U-shaped locking portion 21 so that the door 3 is locked to the storage device main body 1. From the state when the door 3 is locked (door closed position; state shown in FIG. 1) to the state when the door 3 is opened (door open position; state shown in FIG. 3). It is designed to rotate within the range of. Hereinafter, for convenience, the state where the locking tool 2 is in the door closing position will be described in detail with the shaft 23 of the locking tool 2 as the lower side, the locking portion 21 as the upper side, and the door 3 side of the storage device 7 as the front side. .

  The locking tool 2 shown in FIG. 1 has a U-shaped locking part 21 that engages and locks the locked part 32 provided on the door 3 slightly above the central part of the locking tool 2 body. The locking tool 2 is pivotally supported on the lock mechanism housing 8 by a shaft 23 at a substantially center of the locking tool 2 (below the locking portion 21). Below one side (in this example, the rear side) of the locking device 2, it is locked to the arm portion 5 and is inclined to the horizontal portion 221 so as to be positioned at a position substantially horizontal to the shaft core. The second locking portion 22 having a substantially triangular shape that is narrower toward the tip end having the portion 222 protrudes rearward. At the door closing position, the horizontal portion 221 is in a horizontal state and the oblique portion 222 is the horizontal portion 221. It is formed so as to be positioned below. The driven piece 24 protrudes downward along the other side (the front side in this example) opposite to the one side where the second locking portion 22 is formed. Has been. Furthermore, a substantially vertical rotation preventing piece 25 is installed on the upper part of one side of the locking tool 2 in a state where the locking tool 2 is in the door open position.

  The driven piece 24 is provided with a spring as the driving unit 4, and has a rotational force that rotates the locking tool 2 from the inside of the storage device body to the outside of the storage device body (that is, toward the front). It has been granted. The lock mechanism housing 8 is provided with a rotation preventing portion 81 protruding so as to contact the rotation preventing piece 25 provided on the locking device 2 so that the locking device 2 is held in the door open position. (See FIG. 3).

  Of the side piece parts 211 and 212 facing each other, the side piece part 211 on one side part is formed with a guide part 26 and a projecting part 27 successively from the side piece part 211 upward. . The guide portion 26 is formed so as to be horizontal at the door open position shown in FIG. 3, and is the same height as the upper portion of the locked bar 33 provided on the locked portion 32 formed on the door 3. 4 and 5, when the door 3 is closed, the upper portion of the locked bar 33 of the locked portion 32 is provided at the upper end of the locking device 2 as shown in FIGS. 4 and 5. The spring 27 as the drive unit 4 of the locking tool 2 comes into contact with the protruding portion 27 and advances while pushing up the locking tool 2, hits the guide part 26, and further rotates the door 3 in the direction of closing the door 3. The locking tool 2 is rotated from the outer side of the storage device main body toward the inner side (that is, toward the rear) while resisting the rotational force caused by the movement of the locking device 2 so that the locking tool 2 is in the door closed position. The locked bar 33 of the locking portion 32 is moved along the side piece 211 on one side of the locking portion 21 along the locking portion 21. Towards the groove inner side of the U-shaped Hikakaritomebo 33 is fitted, so that the door 3 is locked in the storage apparatus.

  Thus, the locking tool 2 in the door closed position is held in the door closed position by the arm portion 5 (see FIG. 1).

  The main part of the arm part 5 is composed of a main part 51 that is long in the vertical direction, and is pivotally supported on the lock mechanism housing 8 by a shaft 54 at the approximate center of the main part 51. A substantially triangular locking piece 52 having a lateral side 521 and a slanted side 522 and becoming narrower at the tip is locked to the top of the arm portion 5 on the side where the locking tool 2 is installed. It protrudes so as to face the tool 2, and in the state of the door closed position of the locking tool 2 (in the locked state with the locking tool 2), the lateral side 521 of the locking piece 52 is horizontal. Further, it is formed so that the hypotenuse 522 is positioned above the lateral side 521. Further, the lower portion of the main body 51 is branched into a Y-shape, and the side extending downward is a driven portion 53 that follows the drive mechanism 6, and the side extending laterally is a driving projection 55. .

  A spring as the second drive unit 9 is attached to the tip of the drive projection 55, and the locking piece 52 provided on the upper portion of the arm unit 5 is moved from the inside of the storage device body to the outside of the storage device body (frontward). A rotational force is applied to rotate. As described above, when the door 3 rotates in the closing direction with respect to the storage device main body 1, the locking tool 2 is in the middle from the door opening position to the door closing position, and the second locking portion 22 of the locking tool 2. The slanted portion 222 abuts on the slanted side 522 of the locking piece 52 provided on the arm portion 5 to press the arm portion 5 backward, and against the rotational force applied by the second drive portion 9, the arm portion 5. After the second locking portion 22 exceeds the locking piece 52, the arm portion 5 turns the locking piece 52 forward according to the rotational force applied by the second drive unit 9. The horizontal part 221 of the second locking part 22 of the locking tool 2 comes into contact with the horizontal side 521 of the locking piece 52 of the arm part 5, and the locking tool 2 is engaged with the arm part 5. Stopped. In this way, the locking tool 2 is held at the door closing position.

  On the other hand, a drive mechanism 6 is provided as means for opening the door 3. The drive mechanism 6 includes a rotation drive device 61 such as a motor and an eccentric cam 62. The rotation drive device 61 is fixed to the lock mechanism housing 8, and a worm portion 63 into which a spiral worm groove is screwed is fitted on the rotation shaft 611 of the rotation drive device 61 of the embodiment. Further, a disc-shaped wheel portion 64 that meshes with the worm portion 63 is rotatably supported on the lock mechanism housing 8 by a central shaft 65. An eccentric cam 62 is integrally formed on one end surface of the disk-shaped wheel portion 64, and a recess into which a locking projection 661 provided on the dog member 66 is inserted is formed on the other end surface. ing. The dog member 66 is formed with a dog protrusion 661 projecting radially in a part of the outer periphery of the circular plate-like dog member 66, and provided on the wheel portion 64 on one end surface of the dog member 66. A locking projection for inserting into the recess is provided. The dog member 66 is mounted on the wheel portion 64 by inserting the engaging protrusion of the dog member 66 into the recess of the wheel portion 64, but the phase is 180 ° different from that of the dog protrusion 661 provided on the dog member 66. The part with the longest distance from the center of the eccentric cam 62 of the wheel part 64 is located in this part.

  As shown in FIG. 6, the initial position of the eccentric cam 62 of the wheel portion 64 (that is, the position when the locking tool 2 is in the door closed state) is the portion where the distance from the center of the eccentric cam 62 is the longest. It is set to a position farthest from the driven portion 53 of the arm portion 5. At this time, the driven portion 53 provided in the arm portion 5 and the eccentric cam 62 (the portion having the shortest distance from the center of the eccentric cam 62) are separated from each other via a slight gap S.

  In the drive mechanism 6 configured as described above, when the rotation shaft 611 including the worm portion 63 is rotated by energizing the rotation driving device 61, the wheel portion 64 that meshes with the worm portion 63 rotates. The eccentric cam 62 in the initial position rotates with the rotation of the wheel portion 64, and the eccentric cam 62 is formed on the side surface of the driven portion 53 on the side where the locking piece 52 provided on the arm portion 5 is not projected. The arm portion 5 is abutted against the rotational force of the arm portion 5 by the spring (second drive portion 9) (that is, the locking piece 52 above the arm portion 5 moves backward). Rotate. As the arm portion 5 rotates in this manner, the locking state between the locking piece 52 provided on the upper portion of the arm portion 5 and the second locking portion 22 of the locking tool 2 is released. Specifically, the second locking portion 22 of the locking tool 2 is pivotally supported from the locked state in which the second locking portion 22 continues to load upward (in the direction of arrow A in FIG. 1) against the locking piece 52. As the arm portion 5 rotates as described above, the locking piece 52 moves substantially upward as shown by the arrow B (FIG. 1) (that is, the second locking portion 22 moves to the locking piece 52. The locking state is released). The locking device 2 thus unlocked vigorously rotates from the inside of the storage device main body toward the outside of the storage device main body according to the rotational force of the drive unit 4 and is provided on the locking device 2. The locked portion 32 of the door 3 fitted in the locking portion 21 also moves together with the locking portion 21 and is led out toward the outside of the storage device main body, so that the door 3 tries to open vigorously. The locked rod 33 of the locked portion 32 provided on the door 3 hits the hook portion 28 provided on the projection 27 of the locking tool 2, and the momentum of the door 3 is reduced. Thereby, when the drive part 4 is applying the force which opens the door 3, the door 3 is prevented from opening vigorously.

  On the other hand, the eccentric cam 62 continues to rotate even after the driven portion 53 of the arm portion 5 is pressed, makes one rotation, returns to the initial position, and stops at the initial position.

  The locked rod 33 with reduced momentum thus gets over the hooking portion 28 of the locking tool 2. After the locked bar 33 gets over the hooking part 28, the force of the spring which is the driving part 4 does not act on the door 3, in short, after the locked bar 33 gets over the hooking part 28. Regardless of the protrusion 27 or the drive unit 4, the door 3 can be grasped by hand and fully opened quickly by a light operation. Even when the locked bar 33 stops in contact with the hooking portion 28 without overcoming the hooking portion 28, the door 3 can be easily opened to the fully open position by grasping the door 3 with the hand. .

  As described above, since the eccentric cam 62 is installed through the gap S between the eccentric cam 62 and the driven portion 53 provided in the arm portion 5 at the initial position of the eccentric cam 62, the rotation at the time of starting the rotation driving device 61 is performed. Since the load applied to the rotation of the shaft 611 can be reduced, the starting torque of the rotation drive device 61 can be minimized.

  Further, when the door 3 is opened, the pivoted arm portion 5 is removed from the locked state in which the second locking portion 22 of the locking tool 2 continues to load the locking piece 52 upward. Since it is configured to release the locking state by rotating the locking piece 52 upward in an arc shape, the door 3 is opened in a state where the locking tool 2 is located at the door closing position. The direction of the force (see arrow A in FIG. 1) exerted on the arm portion 5 by the locking tool 2 that forcibly applied the rotational force (ie, forward) is in the door closing position of the arm portion 5. The direction of releasing the locking (see arrow B in FIG. 1) can be made substantially the same direction. As a result, even if an external force F (see FIG. 1) is applied from the inside of the storage device body 1 toward the door 3, the mechanism that opens the door 3 does not catch the door 3. It can be unlocked smoothly.

  Further, as described above, the eccentric cam 62 performs the opening operation of the door 3 of the storage device main body 1 with one rotation from the initial position, and controls the turning ON / OFF of the rotation driving device 61 to open the door 3. The control method will be described in detail below.

  As shown in FIGS. 1 to 6, the lock mechanism housing 8 of the embodiment shown in the accompanying drawings is provided with a contact switch M made of a micro switch below the lock mechanism housing 8, and a push button of the contact switch M. M1 is installed so as to face the central axis 65 of the dog member 66 provided on the wheel portion 64, and the push button M1 is installed so that the push button M1 is pressed by the dog projection 661 attached to the rotating dog member 66. ing. In the contact switch M installed in this way, the dog protrusion 661 is positioned at a phase that is 180 ° different from the eccentric cam 62 in the initial position. At this initial position, the contact switch M is pressed. The button M1 is pressed and turned on. And the wheel part 64 rotates through the worm part 63 with the rotational drive of the rotation drive device 61, and the dog member 66 also rotates following the rotation. With the rotation of the dog member 66, the pressing state of the push button M1 of the contact switch M is released and becomes the OFF state, and after the operation of opening the door 3 by the eccentric cam 62 half-rotating and pressing the arm portion 5, When the eccentric cam 62 returns to the initial position, the dog protrusion 661 of the dog member 66 also returns to the initial position, and the push button M1 of the contact switch M is pressed again to be turned on to stop the rotation. In this way, one rotation of the eccentric cam 62 is controlled, and ON / OFF of the drive signal of the rotation drive device 61 is controlled.

  In the present embodiment, the rotational driving device 61 transmits the rotational motion to the eccentric cam 62 by the worm portion 63 and the wheel portion 64, but directly transmits the rotation of the rotational driving device 61 to the eccentric cam 62. It may be a configuration.

  A plurality of storage devices 7 configured as described above are arranged in the vertical direction, the horizontal direction, or the vertical and horizontal directions to constitute a collective storage device.

  As an example of the storage device of the present invention, a mail box will be described as an example.

  FIG. 7 shows an example of a collective storage device. In this embodiment, as shown in FIGS. 7 and 8, the storage box 10 is divided into a plurality of parts by upper and lower partitions 30, and a plurality of storage boxes 10 are arranged in one storage box 10. The storage device main body 1 is formed, a slot 12 is provided in a portion corresponding to each storage device main body 1 of the storage box 10, and a door 3 is attached to each opening of each storage device main body 1. In addition, a storage device 7 for mail storage is configured by attaching the lock mechanism housing 8 having the above-described configuration provided with the locking device 2, the arm portion 5, and the drive mechanism 6 to each storage device main body 1, respectively. That is, in the embodiment of FIG. 7, an example in which a plurality of storage devices 7 that are postboxes are formed in one storage box 10 is installed in a lobby of an apartment house or the like.

  In the embodiment of FIG. 7, a plurality of storage boxes 10 are arranged in the vertical direction and the horizontal direction to constitute a collective storage device. Further, in this embodiment, the storage boxes 10 arranged in the vertical direction are respectively the delivery boxes 20. It is on the top.

  One of the plurality of doors 3 of the lower storage box 10 among the storage boxes 10 arranged above and below is provided with an authentication unit 50, and includes a non-contact IC provided with a semiconductor memory provided to each door of the apartment house. Information registered in the authentication medium by bringing an authentication medium consisting of a card or an authentication medium that can be used in the same manner as a non-contact IC card using a semiconductor memory built in a mobile phone close to or in contact with the authentication unit 50 The above-mentioned operation accompanying the opening of the door 3 of the corresponding storage box 10 is performed by verifying whether or not the relationship between the pre-registered information and the specified relationship is satisfied and if the verification result is acceptable. In order to perform the operation, the rotation drive device 61 is operated and controlled by a control unit (not shown) so as to perform unlocking.

  As described above, when authentication is performed by selecting the drive mechanism 6 corresponding to the authentication medium close to the drive mechanism 6 of the plurality of storage devices 7 by the authentication unit 50 provided in one place, the plurality of drive mechanisms 6 The rotary drive device 61 of the corresponding drive mechanism 6 is driven from the inside, and the arm portion 5 is rotated, so that the locked state between the arm portion 5 and the locking tool 2 is released. The stopper 2 is rotated, and the locking portion 21 is rotated from the inside of the storage device body to the outside of the storage device body to open the door. At this time, even if an external force is applied to the door 3 from the inside of the storage device main body 1 by forcibly pushing a large-sized delivery item inserted from the insertion port 12 provided on the back surface of the storage device 7, The direction of the force that the tool 2 exerts on the arm part 5 and the arm part 5 withdraws when the arm part 5 that locks the locking tool 2 is unlocked when unlocked in response to the authentication. Since the direction is configured to be substantially the same direction, there is no possibility that the door 3 of the corresponding storage box 10 cannot be unlocked.

  In the above embodiment, the storage box 10 is partitioned by the partition 30 to form a plurality of storage device main bodies 1. However, separate storage devices 7 may be arranged.

It is a front view of the principal part of one Embodiment of this invention, and is a figure by which the door is locked. It is a front view of the principal part same as the above, and is a view immediately after releasing the locking state of the locking tool. It is a front view of the principal part same as the above, and is a figure in the state where the door is unlocked and opened. It is a front view of the principal part same as the above, and is a figure in the middle of pushing in a door and closing. It is a front view of the principal part same as the above, and is a figure just before closing by pushing in the door. It is a perspective view from the back of the principal part same as the above, and is a figure of the state by which the locking tool is locked. It is a figure of an example of this embodiment, and is a perspective view showing a collective storage device constituted by arranging a plurality of storage devices. (A) is a front view same as the above, (b) is a rear view same as the above. It is a perspective view which shows the opening / closing mechanism of the conventional door.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Storage device main body 12 Loading port 2 Locking tool 21 Locking part 22 Second locking part 23 Shaft 24 Driven piece 25 Anti-rotation piece 26 Guide part 27 Projection part 28 Hook part 3 Door 32 Locked part 33 Covered Locking rod 4 Driving portion 5 Arm portion 51 Main body portion 52 Locking piece 53 Driven portion 54 Shaft 55 Driving protrusion 6 Driving mechanism 61 Rotating drive device 611 Rotating shaft 62 Eccentric cam 63 Worm portion 64 Wheel portion 65 Center shaft 66 Dog member 661 Dog protrusion 7 Storage device 8 Lock mechanism housing 81 Anti-rotation part 9 Second drive part M Contact switch M1 Push button

Claims (3)

  A storage device main body having an input port for loading a delivery item on the back of the opening, a rotatable locking tool having a locking portion provided at an edge of the opening, and an edge of the opening of the storage device main body A door that is pivotably connected by a pivotal support provided on the door to open and close the opening, and the locking portion provided on the door when the locking tool is in a door closing position by closing the door. The main part of the storage device includes: a locked portion that is locked to the storage device; and a drive unit that opens the door by rotating the locking portion from the storage device main body inner side to the storage device main body outer side. The arm is configured to hold the locking device at the door closed position against the force of the driving unit that is provided in the storage device body and rotates in the direction to open the door of the locking device, and the arm portion is driven. And a drive mechanism that releases the lock at the door closing position of the locking tool and opens the door, and the locking tool is at the door closing position. The direction of the force that the locking tool exerts on the arm portion when a rotational force is applied in the direction of opening the door in the state where the door is placed is substantially the same direction as the direction of releasing the locking at the door closing position of the arm portion. An opening / closing mechanism for a door of a storage device.   The arm portion is rotatably supported by a shaft provided substantially at the center of the vertically long main body portion, and a locking piece for locking the second locking portion provided on the locking tool is provided on the upper portion of the main body portion. The door opening / closing mechanism of the storage device according to claim 1, wherein a driven portion that is provided and driven by a drive mechanism is provided at a lower portion of the main body.   3. The drive mechanism includes: a rotary drive device; and an eccentric cam that is driven by the rotary drive device and is pivotally supported so as to be separated and pressed from the driven portion. Opening and closing mechanism of the door of the storage device according to the above.

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