JP6304006B2 - Stopper mechanism - Google Patents

Description

  The present invention relates to a stopper mechanism that is provided on the entrance / exit side of a mounting shelf where articles are taken in and out.

  As disclosed in Japanese Patent Application Laid-Open No. 2010-184745 (Patent Document 1), a technique for putting articles in and out of a mounting shelf such as an automatic warehouse is known. For example, a stacker crane is used to put in and out the article on the placement shelf.

JP 2010-184745 A

  It is necessary to prevent the article from unexpectedly coming out of the placement shelf or falling. For example, a door that can be opened and closed is provided on the mounting shelf, and the door is opened and closed by an air cylinder and a control drive device. In this case, although falling of the article can be prevented, initial cost and maintenance cost may increase.

  The present invention is a stopper mechanism that suppresses articles from unexpectedly coming out of a placement shelf or falling, and a stopper mechanism that can be configured at a lower cost than in the past. The purpose is to provide.

  A stopper mechanism provided on the entrance / exit side of a placement shelf through which an article is put in and out using an arm, comprising a contact surface and a regulating portion arranged at a position in contact with the article to be put in and out of the placement shelf. Including a first rotating member that is pivotally supported so as to be rotatable in a loading direction that is a direction in which the restriction portion enters the placement shelf and an extraction direction that is the opposite direction, and the first rotating member. A second rotating member that is arranged at a position where it can be locked and switches between a non-locking state and a locking state as it rotates, and when in the non-locking state, the second rotation The member is not locked to the first rotating member, the first rotating member is rotatable in the input direction and the take-out direction, and the first rotating member and the second rotating member are positioned in the rotating direction. Approaching the neutral position corresponding to the locked state The second rotating member is locked to the first rotating member and is restricted from rotating in the take-out direction when in the locked state. The regulation unit restricts the article from coming out of the placement shelf, and when the article is placed in the placement shelf, the first rotating member is moving toward the placement shelf. When it is pushed by an article, it rotates in the loading direction, and the restricting portion allows the article to enter the placement shelf, and when removing the article from the placement shelf, the second rotating member is The second rotating member changes from the locked state to the non-locked state, and is rotated by being pushed by the arm moving in the direction of entering the placement shelf. The first rotating part that is rotatable by forming As the arm moves in a direction away from the placement shelf and pulls out the article, the arm is pushed by the article and rotates in the take-out direction. The second rotating member that is allowed to be taken out from and is in the non-locking state rotates in a direction approaching the neutral position corresponding to the locking state by receiving the biasing force, The non-locking state is maintained by hitting the contact surface of the first rotating member, and after the first rotating member is separated from the article, the first rotating member returns to the neutral position by the biasing force. The second rotating member is separated from the contact surface, and the locked state is formed.

  In the stopper mechanism, the first rotating member and the second rotating member cooperate with the movement of the arm and the movement of the article, thereby exhibiting a function as a stopper. Such a configuration is easy to implement at a lower cost than when the door is electrically opened and closed independently of the movement of the arm and the movement of the article.

It is a top view which shows the stopper mechanism etc. in embodiment. It is a front view which shows the stopper mechanism etc. in embodiment. It is a perspective view which shows the stopper mechanism in embodiment. It is a front view for demonstrating operation | movement (1st step at the time of throwing in articles | goods) of the stopper mechanism in embodiment. It is a top view for demonstrating operation | movement (1st step at the time of throwing in articles | goods) of the stopper mechanism in embodiment. It is a side view for demonstrating operation | movement (1st step at the time of throwing in articles | goods) of the stopper mechanism in embodiment. It is a front view for demonstrating operation | movement (2nd step at the time of throwing in articles | goods) of the stopper mechanism in embodiment. It is a top view for demonstrating operation | movement (2nd step at the time of throwing in articles | goods) of the stopper mechanism in embodiment. It is a side view for demonstrating operation | movement (2nd step at the time of throwing in articles | goods) of the stopper mechanism in embodiment. It is a front view for demonstrating operation | movement (3rd step at the time of throwing in articles | goods) of the stopper mechanism in embodiment. It is a top view for demonstrating the operation | movement (3rd step at the time of throwing in articles | goods) of the stopper mechanism in embodiment. It is a side view for demonstrating operation | movement (3rd step at the time of throwing in articles | goods) of the stopper mechanism in embodiment. It is a front view for demonstrating operation | movement (4th step at the time of throwing in articles | goods) of the stopper mechanism in embodiment. It is a top view for demonstrating operation | movement (4th step at the time of throwing in articles | goods) of the stopper mechanism in embodiment. It is a side view for demonstrating operation | movement (4th step at the time of throwing in articles | goods) of the stopper mechanism in embodiment. It is a front view for demonstrating operation | movement (5th step at the time of throwing in articles | goods) of the stopper mechanism in embodiment. It is a top view for demonstrating operation | movement (5th step at the time of throwing in articles | goods) of the stopper mechanism in embodiment. It is a side view for demonstrating operation | movement (5th step at the time of throwing in articles | goods) of the stopper mechanism in embodiment. It is a front view for demonstrating operation | movement (1st step at the time of taking out articles | goods) of the stopper mechanism in embodiment. It is a top view for demonstrating operation | movement (1st step at the time of taking out of articles | goods) of the stopper mechanism in embodiment. It is a side view for demonstrating operation | movement (1st step at the time of taking out articles | goods) of the stopper mechanism in embodiment. It is a front view for demonstrating the operation | movement (2nd step at the time of taking-out of articles | goods) of the stopper mechanism in embodiment. It is a top view for demonstrating operation | movement (2nd step at the time of taking out articles | goods) of the stopper mechanism in embodiment. It is a side view for demonstrating the operation | movement (2nd step at the time of taking out of articles | goods) of the stopper mechanism in embodiment. It is a front view for demonstrating operation | movement (3rd step at the time of taking out articles | goods) of the stopper mechanism in embodiment. It is a top view for demonstrating operation | movement (3rd step at the time of taking-out of articles | goods) of the stopper mechanism in embodiment. It is a side view for demonstrating operation | movement (3rd step at the time of taking out of articles | goods) of the stopper mechanism in embodiment. It is a front view for demonstrating operation | movement (4th step at the time of taking out articles | goods) of the stopper mechanism in embodiment. It is a top view for demonstrating operation | movement (4th step at the time of taking out articles | goods) of the stopper mechanism in embodiment. It is a side view for demonstrating operation | movement (4th step at the time of taking-out of articles | goods) of the stopper mechanism in embodiment. It is a side view which shows the stopper mechanism in the modification of embodiment.

  The stopper mechanism in the embodiment will be described below with reference to the drawings. The same parts and corresponding parts are denoted by the same reference numerals, and redundant description may not be repeated. 1 and 2 are a plan view and a front view, respectively, showing the mounting shelf 10, the article 20, the stopper mechanism 30, and the like. The arrow Z direction in the figure corresponds to the vertical direction (height direction), the arrow X direction corresponds to the width direction of the mounting shelf 10, and the arrow Y direction corresponds to the depth direction of the mounting shelf 10. These relationships of the arrows X, Y, and Z are common to each drawing described later.

(Mounting shelf 10)
As shown in FIGS. 1 and 2, the mounting shelf 10 has a pair of mounting surfaces 11 and 12. As shown by the white arrow in FIG. 1, the article 20 is placed on the mounting shelf 10 (on the mounting surfaces 11 and 12). As an example, the article 20 (FIG. 1) includes a plurality of fuel cells 21 (batteries) constrained by a frame 22 and a plurality of spacers 23. The article 20 has a length of 600 mm, for example, and has a groove 24 (FIG. 1) on the rear side in the loading direction (the direction of the white arrow in FIG. 1).

  The placement surfaces 11 and 12 of the placement shelf 10 are spaced apart from each other by a distance 13, and the article 20 is put in and out of the placement shelf 10 by the stacker crane 15. The stacker crane 15 includes an arm 16 and a fork 17, and the arm 16 and the fork 17 move up and down along the masts 18 and 19 (FIG. 2). The article 20 is conveyed by the fork 17 and the arm 16 while being placed on the surface 17S (FIG. 2) of the fork 17.

  FIGS. 1 and 2 illustrate a state in which the arm 16 is fitted in the groove 24 of the article 20. When the article 20 is put into the mounting shelf 10, the surface 17S (FIG. 2) of the fork 17 and the surface 10S of the mounting shelf 10 (the surfaces 11S, 12S of the mounting surfaces 11, 12) have the same height. The stacker crane 15 moves upward until it becomes (see the white arrow in FIG. 2). Thereafter, the arm 16 fitted in the groove 24 pushes the article 20 toward the mounting shelf 10 (arrow Y direction).

(Stopper mechanism 30)
FIG. 3 is a perspective view showing the stopper mechanism 30. The stopper mechanism 30 is a mechanism for preventing the article 20 from unexpectedly coming out of the placement shelf 10 or falling, and the placement of the article 20 using the arm 16. The shelves 10 are provided on the entrances 11T and 12T (FIG. 1) side.

  With reference to FIGS. 1 to 3 (mainly FIG. 3), the stopper mechanism 30 includes a first rotating member 31, a second rotating member 32, an urging device 33 and a base 34. The base 34 is disposed on the mounting surface 12, and the first rotating member 31, the second rotating member 32, and the urging device 33 are provided on the base 34.

(First rotating member 31)
The first rotating member 31 includes a rotating shaft 31A, a metal main body 31C, and a resin regulating roller 31B (regulating portion). The main body 31C is pivotally supported by the rotation shaft 31A so as to be rotatable in the directions of arrows A1 and A2. The main body portion 31C includes a rod-shaped portion 31D extending along the rotational radius direction of the main body portion 31C, and a semicircular arc portion 31E extending in an arc shape (or fan shape) along the circumferential direction. The semicircular arc portion 31E is provided at one end of the rod-like portion 31D, and the regulation roller 31B is provided at the other end of the rod-like portion 31D.

  The end surface 31G (FIG. 3) located in the arrow Y direction of the rod-shaped portion 31D of the first rotating member 31 can be opposed to an end surface 32G (FIG. 3) of a claw portion 32F of the second rotating member 32 described later. When the end surfaces 31G and 32G are opposed to each other (in a locked state described later), the rotation of the first rotating member 31 in the arrow A2 direction is restricted by the end surface 32G of the second rotating member 32. The

  The upper surface located in the arrow Z direction of the semicircular arc portion 31E of the first rotating member 31 forms a contact surface 31F. Although the detailed operation of the contact surface 31F will be described later, the lower surface 32H of the claw portion 32F of the second rotating member 32 is applied on the contact surface 31F (see FIG. 27). When the claw portion 32F of the second rotating member 32 is positioned on the contact surface 31F (in the non-locking state described later), the end surfaces 31G and 32G are not opposed to each other. The rotation of the first rotation member 31 is not restricted by the second rotation member 32, and the first rotation member 31 can rotate in the directions of arrows A1 and A2 about the rotation shaft 31A.

  The restricting roller 31B as the restricting portion is rotatable around the rotation shaft 31H (FIG. 3), and is disposed at a position where it can contact the article 20 (FIGS. 1 and 2) to be taken in and out of the mounting shelf 10. . In other words, the article 20 is put in and out of the mounting shelf 10 so that a part of the article 20 comes into contact with the regulating roller 31B. In the present embodiment, when the right side surface of the article 20 is extended in the arrow Y direction (see FIG. 1), the entire system is configured such that the extension line intersects the regulating roller 31B.

  The regulation roller 31B rotates (revolves) in the directions of arrows A1 and A2 as the main body 31C of the first rotating member 31 rotates. The direction in which the regulating roller 31B rotates in the direction of entering the mounting shelf 10 from the position shown in FIG. 1 (clockwise direction in FIG. 1 paper surface) is defined here as the input direction A1. Here, the direction opposite to the input direction A1 is defined as the take-out direction A2.

(Second rotating member 32)
Referring mainly to FIG. 3, the second rotating member 32 includes a knock portion 32A, an arm receiver 32B, a rotating shaft 32C, and a bearing 32D. Knock portion 32A and arm receiver 32B are pivotally supported by bearing 32D and rotating shaft 32C so as to be integrally rotatable in the directions of arrows B1 and B2 (FIG. 3).

  For example, when the arm receiver 32B is pushed by the arm 16 (see FIGS. 1 and 2) and rotates in the arrow B2 direction, the arm receiver 32B rotates in the arrow B2 direction integrally with the knock portion 32A. When the pressure from the arm 16 (see FIGS. 1 and 2) is released and the arm receiver 32B rotates in the arrow B1 direction, the arm receiver 32B rotates in the arrow B1 direction integrally with the knock portion 32A.

  The knock portion 32A has a rod-like portion 32E extending along the rotational radius direction of the knock portion 32A, and a claw portion 32F provided at the tip of the rod-like portion 32E. When the rotation angle of the rod-shaped portion 32E is approximately horizontal, the end surface 32G of the claw portion 32F faces the end surface 31G of the first rotating member 31 (locked state). The rotation of the first rotating member 31 in the arrow A2 direction is restricted by the end face 32G of the second rotating member 32.

  On the other hand, the end surface 32G does not oppose the end surface 31G in the state where the rod-shaped portion 32E is rotated at a predetermined angle or more in the arrow B2 direction. The lower surface 32H of the claw portion 32F of the second rotating member 32 can hit the contact surface 31F of the first rotating member 31 (see FIG. 27). When the claw portion 32F of the second rotating member 32 is positioned on the contact surface 31F, the rotation of the first rotating member 31 is not restricted by the second rotating member 32, and the first rotating member 31 is not restricted. Can rotate in the directions of arrows A1 and A2 about the rotation shaft 31A (unlocked state).

  That is, the second rotating member 32 is disposed at a position where it can be locked to the first rotating member 31, and the second rotating member 32 is locked with the above-described non-locking state as the second rotating member 32 rotates. Switch between states. When the second rotating member 32 forms the non-locking state (see FIG. 24), the second rotating member 32 is not locked to the first rotating member 31, and the first rotating member 31 is in the insertion direction A1 and the take-out direction. A2 is freely rotatable.

  Here, the urging device 33 includes a pedestal portion 33A and a pair of springs 33B and 33C. The first rotating member 31 receives a biasing force from the pair of springs 33B and 33C such that the position in the rotation direction (arrow A1, A2 direction) approaches a neutral position (normal position) corresponding to the above-described locking state. . For example, when the first rotating member 31 rotates in the arrow A1 direction as compared with the state shown in FIG. 1, the first rotating member 31 receives a biasing force in the arrow A2 direction. When the first rotating member 31 rotates in the arrow A2 direction as compared with the state shown in FIG. 1, the first rotating member 31 receives an urging force in the arrow A1 direction.

  The same applies to the second rotating member 32. As for the 2nd rotation member 32, the claw part 32F provided in the tip side of knock part 32A is functioning as a "weight". The second rotating member 32 receives an urging force from the “weight” so that the position in the rotational direction (the directions of the arrows B1 and B2) approaches the neutral position corresponding to the locked state. When the second rotating member 32 rotates in the arrow B2 direction as compared with the state shown in FIG. 3, the second rotating member 32 receives an urging force in the arrow B1 direction. Although not shown in detail, the rotatable range of the rod-like portion 32E of the second rotating member 32 is appropriately limited by a stopper or the like so as not to rotate further in the arrow B1 direction than the rotation angle shown in FIG. Has been.

  When the second rotating member 32 forms a locked state (see FIG. 18), the second rotating member 32 is locked to the first rotating member 31, and the first rotating member 31 (regulating roller 31B) is in the take-out direction. Rotation to A2 is restricted. The article 20 is restricted from coming out of the mounting shelf 10 by the restriction roller 31B (regulation part) of the first rotating member 31 that is restricted from rotating in the take-out direction A2. The stopper mechanism 30 has the above configuration.

(Operation of stopper mechanism 30)
Hereinafter, the operation of the stopper mechanism 30 will be described in detail. 4 to 6 are a front view, a plan view, and a side view, respectively, showing how the article 20 is thrown into the mounting shelf 10. In FIG. 6, only a part of the first rotating member 31 and a part of the second rotating member 32 are illustrated, and the rotating shaft 31A, the rotating shaft 32C, and the like are not illustrated. This is the same also in FIG.

(When article 20 is charged)
As shown in FIGS. 4 to 6, when the article 20 is put into the mounting shelf 10, the fork 17 of the stacker crane 15 and the surface 10 </ b> S (the mounting surfaces 11 and 12) of the mounting shelf 10 are the same. It is said to be high. The arm 16 fitted in the groove 24 pushes the article 20 toward the mounting shelf 10 (in the direction of arrow Y). The article 20 slides. 4 to 6, the article 20 is not in contact with the regulating roller 31 </ b> B of the first rotating member 31.

  As shown in FIGS. 7 to 9, when the article 20 moves on the placement surfaces 11 and 12 and further advances in the direction of the arrow Y by a predetermined distance, the article 20 contacts the regulating roller 31 </ b> B of the first rotating member 31. To do. At this time, the end surface 31G (FIG. 9) of the first rotating member 31 is opposed to the end surface 32G (FIG. 9) of the second rotating member 32, but the first rotating member 31 is in the insertion direction A1 (see FIG. 11). ) Is allowed to rotate.

  As shown in FIGS. 10 to 12, the arm 16 fitted in the groove 24 further pushes the article 20 toward the back of the mounting shelf 10 (in the direction of arrow Y). When the regulating roller 31B is pushed by the article 20 moving toward the placement shelf 10, the first rotating member 31 is opposed to the urging force of the urging device 33 in the loading direction A1 (see FIG. 11). Rotate. The frontage dimension necessary for the loading of the article 20 is ensured by the rotation, and the regulation roller 31B (regulation unit) allows the article 20 to enter the placement shelf 10. Since the regulation roller 31B rotates itself, the article 20 is not scratched. At this time, there is no particular change in the second rotating member 32.

  As shown in FIGS. 13 to 15, the arm 16 fitted in the groove 24 further pushes the article 20 toward the back of the mounting shelf 10 (in the arrow Y direction). As the arm 16 moves in the arrow Y direction, the arm 16 eventually comes into contact with the arm receiver 32B of the second rotating member 32. When the arm receiver 32B of the second rotating member 32 is pushed by the arm 16, the second rotating member 32 rotates in the direction of arrow B2 (FIG. 15).

  When the article 20 is arranged at a predetermined position in the placement shelf 10, the regulation roller 31B of the first rotating member 31 is already separated from the right side surface of the article 20 (see FIG. 14). The first rotating member 31 rotates in the direction of arrow A2 (FIG. 14) by receiving the urging force of the urging device 33, and returns to the neutral position (the state shown in FIG. 14). After the article 20 is placed at a predetermined position, the arm 16 is moved upward and then turned back (see arrow AR in FIG. 15).

  Referring to FIGS. 16 to 18, when the arm 16 (not shown) is turned back by a predetermined distance, the arm 16 is separated from the second rotating member 32 to release the pressure on the second rotating member 32. The second rotating member 32 rotates in the direction of arrow B1 (FIG. 18) by the action (biasing force) of the weight of the claw portion 32F, and returns to the neutral position (state shown in FIG. 18).

  With reference to FIGS. 16 to 18, the end surface 31 </ b> G of the first rotating member 31 faces the end surface 32 </ b> G of the claw portion 32 </ b> F of the second rotating member 32, thereby forming a locked state. The rotation of the first rotating member 31 in the take-out direction A2 (see FIG. 3 and the like) is restricted by the locking of the end faces 31G and 32G. Even if the article shelf 20 is moved in the direction opposite to the arrow Y due to shaking or the like on the mounting shelf 10, the movement is suppressed by the regulating roller 31 </ b> B of the first rotating member 31.

  Therefore, it can suppress that the articles | goods 20 in the mounting shelf 10 come out of the mounting shelf 10 against a will, or fall. In order to obtain a higher effect, that is, two stopper mechanisms 30 are arranged facing each other, or the surface of the mounting shelf 10 so that the discharge or dropping contrary to the intention of the article 20 is surely suppressed by the regulating roller 31B. A guide may be provided at 10S to limit the movement of the article 20 in the linear direction so that the article 20 can be easily applied to the regulating roller 31B.

(When removing the article 20)
As shown in FIGS. 19 to 21, when the article 20 is taken out from the mounting shelf 10, the fork 17 of the stacker crane 15 and the surface 10 </ b> S (the mounting surfaces 11 and 12) of the mounting shelf 10 are the same again. It is said to be high. The arm 16 moves in a direction (arrow Y direction) entering the mounting shelf 10.

  As the arm 16 moves in the arrow Y direction, the arm 16 eventually comes into contact with the arm receiver 32B of the second rotating member 32. The states shown in FIGS. 20 and 21 are obtained. Thereafter, when the arm receiver 32B of the second rotating member 32 is pushed by the arm 16, the second rotating member 32 rotates in the arrow B2 direction (FIG. 21).

  As shown in FIGS. 22 to 24, the arm 16 moves obliquely upward so as to slightly rise (see FIG. 24). The arm 16 reaches above the groove 24 of the article 20. At this time, the end surface 31G of the first rotating member 31 has not already faced the end surface 32G of the second rotating member 32. The state of the second rotating member 32 has transitioned from the locked state to the non-locked state. Thereafter, the arm 16 moves downward and enters the groove 24 of the article 20.

  With reference to FIGS. 25 to 27, the arm 16 starts the backward movement and pulls out the article 20 from the placement shelf 10. At this time, the second rotating member 32 forms an unlocked state. Due to the formation of the non-locking state, the first rotating member 31 is rotatable in the take-out direction A2. The arm 16 moves in a direction away from the placement shelf 10 and pulls out the article 20. The article 20 eventually comes into contact with the regulating roller 31B of the first rotating member 31. When the regulation roller 31B is pressed against the article 20, the first rotating member 31 rotates in the take-out direction A2 (see FIG. 26) while opposing the urging force of the urging device 33. That is, the regulation roller 31B (regulation unit) of the first rotating member 31 that is rotatable in the take-out direction A2 allows the article 20 to be taken out from the mounting shelf 10.

  As the arm 16 (not shown) moves backward, the second rotating member 32 (unlocked state) rotates in the direction of arrow B1 (FIG. 27) by the action (biasing force) of the weight of the claw portion 32F, and is neutral. An attempt is made to return to the position (the state shown in FIG. 18). At this time, the contact surface 31F of the first rotating member 31 enters under the claw portion 32F of the second rotating member 32 by rotating the first rotating member 31 in the take-out direction A2.

  Referring to FIGS. 28 to 30, the lower surface 32 </ b> H of the claw portion 32 </ b> F of the second rotating member 32 hits the contact surface 31 </ b> F of the first rotating member 31, so that the second rotating member 32 is in the locked state (neutral position). Return is prevented and the unlocked state is maintained. This non-locking state is maintained even after the arm 16 leaves the second rotating member 32 (see FIG. 30).

  After the first rotating member 31 is separated from the article 20, the first rotating member 31 is returned to the neutral position by the biasing force received from the biasing device 33, and the second rotating member 32 is moved from the contact surface 31 </ b> F of the first rotating member 31. The separated state is formed again (the state shown in FIGS. 4 to 6 is formed again).

(Function and effect)
In the stopper mechanism 30, the first rotating member 31 and the second rotating member 32 cooperate with the movement of the arm 16 and the movement of the article 20, thereby exhibiting a function as a stopper. Such a configuration is easy to implement at a lower cost than when the door is electrically opened and closed independently of the movement of the arm 16 and the movement of the article 20. Maintenance costs can also be reduced compared to the case of using an air cylinder and a control device.

  The stopper mechanism 30 allows the article 20 to be taken in and out of the mounting shelf 10 from the front. For example, as another stopper mechanism, a configuration is conceivable in which an instrument is fixed to the tip of a shelf so that an article does not get over it. However, in the case of this configuration, it is necessary to accommodate the articles so that they are lowered from the top. The stopper mechanism 30 according to the present embodiment does not need to be housed so as to drop the article from above, and can be taken in and out from the front.

  As another stopper mechanism, a pin or the like may be inserted into the tip of the shelf. However, in the case of manual work, it is possible to limit the height of a shelf into which pins or the like can be inserted, and it is practically impossible to employ in an automatic warehouse. On the other hand, the stopper mechanism 30 in the present embodiment can be sufficiently applied to an automatic warehouse or the like because the locking state / non-locking state can be switched in accordance with the movement of the arm 16 or the movement of the article 20.

[Modification]
Referring to FIG. 31, the lower end portion of claw portion 32F of second rotating member 32 may have an R shape. According to the said structure, it becomes easy to return from a non-locking state to a locking state, and operation | movement of the stopper mechanism 30 can be made more reliable.

  Although the embodiment has been described above, the above disclosure is illustrative in all respects and is not restrictive. The technical scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  10 mounting shelf, 10S, 11S, 12S, 17S surface, 11, 12 mounting surface, 11T, 12T doorway, 13 spacing, 15 stacker crane, 16 arm, 17 fork, 18, 19 mast, 20 article, 21 fuel cell , 22 frame, 23 spacer, 24 groove, 30 stopper mechanism, 31 first rotating member, 31A, 31H, 32C rotating shaft, 31B regulating roller, 31C main body part, 31D, 32E rod-like part, 31E semicircular arc part, 31F contact surface , 31G, 32G end face, 32 second rotating member, 32A knock part, 32D bearing, 32F claw part, 32H bottom face, 33 biasing device, 33A pedestal part, 33B, 33C spring, 34 base, A1 input direction, A2 takeout direction .

Claims (1)

A stopper mechanism provided on the entrance / exit side of the mounting shelf where articles are taken in and out using an arm,
Including a contact surface and a restricting portion disposed at a position in contact with the article to be put in and out of the placement shelf, and a direction in which the restriction portion enters the placement shelf and a direction opposite thereto A first rotating member pivotally supported so as to be rotatable in a certain extraction direction;
A second rotating member that is disposed at a position that can be locked to the first rotating member, and that switches between a non-locking state and a locking state as it rotates.
When in the non-locking state, the second rotating member is not locked to the first rotating member, and the first rotating member is rotatable in the loading direction and the taking-out direction,
The first rotating member and the second rotating member are each subjected to an urging force such that the position in the rotation direction approaches a neutral position corresponding to the locking state,
In the locked state, the second rotating member is locked to the first rotating member, and the article is described above by the restriction portion of the first rotating member that is restricted from rotating in the take-out direction. Going out of the shelf is regulated,
When putting the article into the placement shelf, the first rotating member rotates in the loading direction by being pushed by the article moving toward the placement shelf, and the restriction portion is Allow the article to enter the shelf,
When taking out the article from the mounting shelf, the second rotating member rotates by being pushed by the arm moving in the direction of entering the mounting shelf, and the state of the second rotating member is Transition from the locked state to the unlocked state,
The first rotating member that has become rotatable due to the formation of the non-locking state is pushed by the article as the arm moves in a direction away from the mounting shelf and pulls out the article. Rotating in the take-out direction, the restricting portion allows to be taken out from the storage shelf of the article,
The second rotating member forming the non-locking state rotates in a direction approaching the neutral position corresponding to the locking state by receiving the biasing force, and then the contact of the first rotating member. Maintaining the non-locking state by hitting the surface,
After the first rotating member is separated from the article, the biasing force causes the first rotating member to return to the neutral position, and the second rotating member is separated from the abutting surface to form the locking state. ,
Stopper mechanism.

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