JP5012018B2 - Seismic unlocking device for moving shelf device - Google Patents

Description

  The present invention relates to a seismic unlocking device in a moving shelf device, and more specifically, usually locks to stop the movement of the moving shelf, and releases the lock when an earthquake occurs to allow the moving shelf to move. The present invention relates to a seismic unlocking device in a moving shelf device.

  Conventionally, a plurality of movable shelves having wheels that are driven to rotate manually are arranged so as to be movable along rails laid in a direction perpendicular to the entrance / exit surfaces, and the movement of the movable shelves There are various types of manual moving shelf devices in which a passage having a predetermined width is formed. Then, the user operates the operation handle provided on the front surface of each movable shelf, transmits the rotational force of the operation handle to the wheels via the drive transmission system, and rotationally drives the wheels between the predetermined movable shelves or on the side. A passage is formed between the fixed shelf and the movable shelf arranged at the end, and a user enters the passage, and articles such as books and files are taken in and out from the entrance / exit face facing the passage.

  Patent Document 1 discloses that a handle shaft sprocket provided on the side surface of a movable shelf and on which a chain is hung is not hooked or a tooth of a locking gear coaxial with the sprocket. A lock rod is provided in a posture in which the tip side can be advanced and retracted, and a spring that urges the rod in the lock direction when locked and urges the lock in the non-lock direction when unlocked is positioned below the spring on the axis of the rod. A spring that biases the lock rod only in the non-locking direction, and an operation member by a knob or lever for operating the rod is provided on the rear end side of the rod, and the momentum of the rotational movement of the operation member A conversion mechanism that converts the linear movement of the lock rod while accumulating in both the springs is connected to the handle-type movable shelf provided between the operating member and the rod rear end side. In this mechanism, a member that can be freely swung by vibration in a plane orthogonal to the shaft is pivotally suspended from the rotating shaft of the operation member, and the upper end side of the swinging member is An automatic unlocking mechanism for a handle-type movable shelf is disclosed, in which the mechanism is formed as an operating piece that operates only on the unlocking side and is disposed on one of the components of the conversion mechanism.

However, the lock release mechanism of Patent Document 1 is provided on the upper end side of the swinging member that is directly suspended from the rotating shaft of the operating member that operates the locking mechanism so that the swinging member can swing freely by vibration. The operation piece is configured to be operated only on the unlocking side, but it is artificial such that a book can be taken in and out while the moving shelf is stopped, or the shoulder is lightly shaken to the moving shelf while passing through the passage. Such slight vibration is likely to cause a malfunction such that the swinging member swings and the operating piece operates the conversion mechanism to the unlocking side.
Japanese Patent No. 3548624

  Therefore, in view of the above situation, the present invention intends to solve a plurality of movable shelves along a plurality of rails, and a driving wheel and a single or a plurality of driven wheels provided at the lower end of the shelf roll on the rails. The adjacent movable shelves move relative to each other so that a passage having a predetermined width is formed between them, and the rotation of the drive wheels is limited by a lock mechanism provided on the movable shelf. A moving shelf device that detects earthquake vibrations and releases the lock mechanism so that it can move freely on the rail to prevent the moving shelf from collapsing, and it has no malfunction and is highly reliable. The point is to provide a seismic unlocking device.

In order to solve the above-mentioned problems, the present invention enables a plurality of moving shelves along a plurality of rails so that a driving wheel and a single or a plurality of driven wheels provided at the lower end of the shelving roll on the rail and move relative to each other. A movable shelf device that is arranged and a passage having a predetermined width is formed between adjacent movable shelves by relatively moving, and the rotation of the driving wheel is limited by a lock mechanism provided on the movable shelf. The lock mechanism can be released by applying an external force of a predetermined level or more, and a swing member provided with a weight at the lower end in the vicinity of the carriage of the movable shelf can swing only in the moving direction of the movable shelf. It is pivotally supported, the position of the weight is set at the lower end of the carriage, and an actuating member for unlocking is provided in the vicinity of the lock mechanism, so that the swing of the swing member Is transmitted to the operating member by Per To unlock the locking mechanism, the seismic transmission mechanism, sensitive in a mobile shelving system, characterized in that with a rotating conversion means for converting the rotation of the shaft that vertically swinging the swing member A seismic lock release device is configured (claim 1).

The lock mechanism is provided at a middle position of the front panel of the movable shelf, and the seismic transmission mechanism is provided at a shaft that is rotatably provided inside the front panel, and a lower end portion of the shaft. A rotation converting means for converting the swing of the moving member into a rotation; and a latch means provided at an upper end portion of the shaft to be engaged and disengaged by the rotation of the shaft. The operating member is elastically biased in the moving direction. , and at the same time engaging with said latch means in a state of moving the actuating member against the resilient biasing force, to set the lock mechanism to the locked state, by the swinging of the swinging member and the rotation conversion means and the shaft By transmitting and releasing the latch means, the operating member is driven by an elastic biasing force to unlock the lock mechanism (Claim 2).

  Here, a projecting piece is provided on a part of the cam plate fixed to the rotation shaft of the operation lever of the lock mechanism so as to be orthogonal to the rotation shaft, and the operating member is slidably provided in the vicinity of the cam plate. In addition, it is preferable that an operation piece that is elastically urged in the moving direction and that is driven by being brought into contact with the projecting piece is provided on a part of the operating member, and the latch means is provided at the end. ).

Further, the swinging member, a unit by mounting the operating member and seismic transmission mechanism on the same plate, and more preferably becomes attached in association with sensitive Shin unlocking unit to the locking mechanism of the movable shelves (claim 4 ).

The seismic unlocking device in the moving shelf apparatus according to the first aspect of the present invention can swing the swinging member having a weight at the lower end in the vicinity of the carriage of the moving shelf only in the moving direction of the moving shelf. Since the position of the weight is set at the lower end of the carriage, the swinging member hardly swings due to an artificial swing applied to a normal moving shelf, thereby preventing a malfunction. When the earthquake occurs and the floor surface is shaken in the horizontal direction, the swinging member swings greatly, so that the lock mechanism is locked by transmitting it to the operating member via the seismic transmission mechanism. It can be canceled. Here, since the lock mechanism has a structure that can be released by applying an external force that is greater than or equal to a predetermined value, if the operation member is set so as to generate an external force that is greater than or equal to the predetermined value, the actuating member The lock mechanism can be reliably unlocked when is operated. In addition, since the seismic transmission mechanism includes rotation converting means for converting the swing of the swing member into the rotation of the shaft that is suspended, the potential energy is transmitted when the swing of the swing member is transmitted to the operating member. Therefore, the reliability is high. As a result, the lower end of the movable shelf is not restrained by allowing the movable shelf to move along the rail when an earthquake occurs, so the weight of the movable shelf can be reduced even if a large roll occurs on the floor. Because it tries to stand still by the inertial force, it can prevent collapse by minimizing absolute shaking.

According to the second aspect, since the lock mechanism is provided at the middle position of the front panel of the movable shelf, it is easy to operate, and the seismic transmission mechanism is configured to rotate the shaft by the rotation converting means for rotating the swing member. Since the structure is such that the latch means is engaged and disengaged, there is no increase in potential energy when the swinging motion of the swinging member is transmitted to the actuating member, so that the operating member is highly reliable. The elastic member is elastically biased in the moving direction, and is locked by the latch means in a state where the operating member is moved against the elastic biasing force, and at the same time, the lock mechanism is set in the locked state. by setting the above predetermined force the lock is released by releasing the latch means to swing the swing member is transmitted by said rotation converting means and the shaft, the actuating member by the elastic biasing force Moving to be able to reliably canceled the locking of the locking mechanism. In addition, by providing a seismic transmission mechanism including a latch means between the swing member and the actuating member, the swing of the swing member is not directly transmitted to the actuating member, so that malfunction can be prevented. .

  According to the third aspect of the present invention, in the structure in which the operating lever is rotated to rotationally displace the cam plate fixed to the rotating shaft so that the locking mechanism is locked, a part of the cam plate is orthogonal to the rotating shaft. The operating piece of the operating member provided in the vicinity of the cam plate so as to be slidable on the projecting piece is driven so that the operating member abuts during the sliding movement by the elastic biasing force. Can be reliably released.

According to a fourth aspect of the present invention, the swing member, the actuating member, and the seismic transmission mechanism are mounted on the same plate as a unit, and the seismic lock release unit is attached in association with the lock mechanism of the movable shelf. Therefore, by retrofitting it as an option for moving shelves, it is possible to easily change ordinary moving shelves to earthquake-resistant moving shelves, and it is possible to set the exact position because necessary members are attached to the same plate in advance. The linked operation of each member is ensured.

  Next, the present invention will be described in more detail based on the embodiments shown in the accompanying drawings. FIG. 1 is an overall perspective view of a manual movable shelf provided with a seismic unlocking device according to the present invention, FIGS. 2 to 10 show the details thereof, in which 1 is a movable shelf, 2 is a rail, 3 is a passage 4 is a drive wheel, 5 is a driven wheel, 6 is an operation handle, 7 is a small-diameter sprocket, 8 is a large-diameter sprocket, 9 is a chain, 10 is a loosening prevention means, 11 is a lock mechanism, 12 is an operation lever, and 13 is a feeling. Each seismic lock release mechanism is shown.

  First, in the manual type moving shelf device according to the present invention, a plurality of moving shelves 1 are movably arranged along a plurality of rails 2,... And the adjacent moving shelves 1, 1 move relatively. A passage 3 having a predetermined width is formed between them. And the drive wheel 4 and the single or several driven wheel 5 are provided in the position corresponding to each rail 2, ... at the lower end of the movement shelf 1, and the rotational force of the operation handle 6 provided in the front middle stage of the movement shelf 1 is the said. The structure is such that the drive wheel 4 is transmitted by a small-diameter sprocket 7, a large-diameter sprocket 8 and a chain 9 wound around them, and the chain 9 is prevented from loosening by elastically applying tension to the chain 9 to prevent looseness. Means 10 are provided.

  More specifically, the movable shelf 1 is provided with a drive wheel 4 that is manually driven to rotate on a carriage 14 and a driven wheel 5 having the same diameter as the drive wheel 4. A storage unit 17 having a normal structure in which shelf plates 16 are held in multiple stages is provided, and a front panel 18 is provided at least on the front side of the storage unit 17. The operation handle 6 and the operation lever 12 are provided in the middle of the front panel 18, and the small-diameter sprocket 7 is connected to the shaft portion of the operation handle 6 via a bidirectional clutch mechanism. Is provided at the front end of the carriage 14. Here, the bidirectional clutch mechanism, the small-diameter sprocket 7 and the large-diameter sprocket 8 are located on the back surface of the front panel 18. Although not shown, the shaft of the large-diameter sprocket 8 and the shaft of the drive wheel 4 are linked by an appropriate speed reduction mechanism.

  Therefore, when the operation handle 6 is rotated, the drive wheels 4 are rotated in the same rotation direction as the rotation direction of the operation handle 6 by the sprockets 7 and 8 and the chain 9, thereby moving the movable shelf 1 in the same direction. It is. That is, when the operation handle 6 is rotated clockwise, the movable shelf 1 moves rightward, and when the operation handle 6 is rotated counterclockwise, the movable shelf 1 moves leftward.

  More specifically, as shown in FIGS. 2, 3 and 5, a driving component other than the sprocket 8 is attached to a support plate 19 attached to the support columns 15, 15 on the front side of the movable shelf 1, and a lock mechanism is installed. 11 and seismic unlocking mechanism 13 are attached. Then, the mechanism portion is concealed by the front panel 18, and only the operation handle 6 and the operation lever 12 are exposed to the front side.

  First, the lock mechanism 11 will be described with reference to FIGS. The lock mechanism 11 is provided in a space surrounded by the support plate 19 and the front panel 18 between the operation lever 12 and the upper sprocket 7, and is attached to the front surface of the support plate 19. A lock rod 22 is vertically suspended by a plurality of upper and lower guide plates 21 and 21 formed by being cut and raised, and when the lock rod 22 is lifted, its upper end is engaged between the teeth of the sprocket 7. Thus, the rotation of the sprocket 7 is restricted and the rotation of the drive wheel 4 is stopped. A coil spring 23 is wound around the intermediate portion of the lock rod 22 to elastically bias the lock rod 22 downward. On the other hand, a cam plate 25 is fixed to the rotary shaft 24 of the operation lever 12, and an eccentric position of the cam plate 25 and a lower end portion of the lock rod 22 are pivotally attached to both ends of the connecting rod 26. Yes. The operation lever 12 is fixed to a fixed rod 27 fixed at a right angle to the front end of the rotation shaft 24, and the operation lever 12 and the rotation shaft 24 are integrated with respect to rotation.

  Usually, the operation lever 12 and the fixing rod 27 are directed in the vertical direction. At that time, the cam plate 25 is oriented in the horizontal direction, the lock rod 22 is slid to the lowest position, and the sprocket 7 is It is in the unlocked state that is not meshed. When the operation lever 12 is rotated to the right until it becomes horizontal, the lock rod 22 rises against the elastic urging force of the coil spring 23, and the lock rod 22, the connecting rod 26, and the rotation shaft. 24 becomes a U-shaped arrangement beyond the top dead center arranged in a straight line, and it becomes a metastable state. At this time, the lock rod 22 is in a locked state in which the upper end of the lock rod 22 is engaged with the sprocket 7. When the cam plate 25 is rotated counterclockwise by applying an external force, the lock rod 22, the connecting rod 26, and the rotating shaft 24 exceed the straight shape from the rectangular shape, and thereafter, the elastic biasing force of the coil spring 23. To move to the initial unlocked state. Here, the external force that rotates the cam plate 25 until the lock rod 22, the connecting rod 26, and the rotary shaft 24 in a locked state change from a square shape to a linear shape is referred to as “a predetermined external force or more”. Corresponds to “can be released by adding”.

  Next, the present invention will be described in more detail with reference to FIGS. In the present invention, a swinging member 28 provided with a weight 29 at the lower end is pivotally supported in the vicinity of the carriage 14 of the moving shelf 1 so as to be swingable only in the moving direction of the moving shelf 1, and the position of the weight 29 is determined. An operating member 30 that is set at the lower end portion of the carriage 14 and is provided in the vicinity of the lock mechanism 11 so as to be unlocked is movably provided, and the swinging member 28 is swung by the seismic transmission mechanism 31. The lock mechanism 11 is unlocked.

  More specifically, the operating member 30 is elastically urged in the moving direction, and is locked by the latch means 32 in a state where the operating member 30 is moved against the elastic urging force, and at the same time, the lock mechanism 11 is locked. By setting the state, the swinging motion of the swinging member 28 is transmitted by the seismic transmission mechanism 31 and the latch means 32 is released, so that the operating member 30 is driven by an elastic biasing force to The lock is released. More specifically, a projecting piece 33 is provided on a part of the cam plate 25 fixed to the rotation shaft 24 of the operation lever 12 of the lock mechanism 11 so as to be orthogonal to the rotation shaft 24, and the operating member 30 includes the operating member 30. Provided in the vicinity of the cam plate 25 so as to be slidable, elastically urged in the moving direction, and further provided with an operating piece 34 that is driven in contact with the protruding piece 33 at a part of the operating member 30, and at the end. The latch means 32 is provided.

  The seismic transmission mechanism 31 includes a shaft 35 that is rotatably provided inside the front panel 18, and a rotation conversion that is provided at a lower end portion of the shaft 35 and converts the swing of the swing member 28 into rotation. Means 36 and the latch means 32 provided at the upper end of the shaft 35 and engaged / disengaged by rotation of the shaft 35.

  As shown in FIGS. 4 to 7, the operating member 30 is attached to a pedestal 37 fixed to the support plate 19 at a position near the lower side of the cam plate 25 via a linear guide 38 and is slidable in the horizontal direction. It has become. Here, the operation member 30 includes an attachment plate 39 that is directly attached to the linear guide 38 and an operation plate 40 that is attached to the attachment plate 39 so that a lateral position can be finely adjusted. 34 is bent toward the support plate 19, and the locking piece 41 is bent, and a tension coil spring 42 is interposed between the locking piece 41 and the pedestal 37 at an appropriate position to actuate the operating member 30. Is elastically biased to the right. The elastic biasing force generated by the tension coil spring 42 generates a large external force sufficient to release the lock state of the lock mechanism 11.

  Further, the operating plate 40 is bent and extended in a crank shape in the left direction from the mounting plate 39, and a locking pin 43 constituting the latch means 32 is vertically attached to the tip thereof. Note that a sleeve 44 is externally attached to the locking pin 43 so as to be rotatable. Therefore, it is the sleeve 44 that actually locks as the latch means 32, but in the following description, it is referred to as the locking pin 43.

  The operating piece 34 provided on the operating member 30 is located below the rotating shaft 24. When the lock plate is unlocked, the cam plate 25 faces the horizontal direction. It is suitable. When the operation lever 12 is rotated 90 ° clockwise, the locked state is brought about as described above. At the same time, the projecting piece 33 also rotates clockwise, so that the operation piece 34 is moved leftward from the right side. Thus, the actuating member 30 slides to the left against the elastic biasing force of the tension coil spring 42, and at this time, the latch means 32 maintains the state.

  For this purpose, the upper end of the shaft 35 is rotatably supported by a bearing member 45, and a latch piece 46 is fixed to the shaft 35, and the latch pin 46 engages the locking pin 43 of the operating member 30. It is supposed to be. The latch piece 46 is elastically biased by a tension coil spring 47 in a direction in which the latch piece 46 engages with the locking pin 43. Thus, the latch means 32 is constituted by the locking pin 43 of the operating member 30 and the latch piece 46. A shaft 35 having a square cross section is supported by the bearing member 45 on a bearing piece 49 with a synthetic resin bush 48 so that the shaft 35 can be smoothly rotated.

  As shown in FIGS. 8 to 10, the rotation converting means 36 swings only in the moving direction of the moving shelf 1 of the swinging member 28, that is, only in a plane parallel to the support plate 19. The shaft 35 is converted so as to rotate when the rocking member 28 is swung in the right direction. Specifically, the shaft 35 is rotatably supported by the upper and lower bearing pieces 51, 51 of the bearing member 50 via a synthetic resin bush 52, and a pair of bent portions are formed at the left and right of the central portion of the bearing member 50. A supporting shaft 54 is held horizontally by the support pieces 53, 53, and a shaft cylinder 55 provided by penetrating the upper end portion of the swing member 28 in the horizontal direction is loosely inserted into the supporting shaft 54, and the bearing piece 51 is further inserted. , 51, and a drive member 56 is inserted into the shaft 35 in a non-rotatable manner, and a drive piece 57 extended to a part of the drive member 56 is placed on the right side of the upper and lower intermediate portions of the swing member 28. It is the structure located in the notch part 58 formed in this. One of the support pieces 53 also serves as an attachment plate for attachment to the support plate 19.

  Accordingly, when the swinging member 28 swings left and right with the support shaft 54 as a fulcrum, particularly when tilted to the right, the driving piece 57 positioned in the notch 58 is pushed to the right to push the driving member 56. Thus, the shaft 35 rotates in the direction in which the latch piece 46 disengages, that is, clockwise in plan view in this embodiment.

  Then, with the movable shelf 1 stopped at a predetermined position, the operating lever 12 is rotated 90 ° clockwise to bring the locking mechanism 11 into the locked state, and at the same time, the protruding piece 33 of the cam plate 25 is operated. The operation piece 34 of the member 30 is pulled rightward and pushed against the elastic biasing force of the coil spring 42 to lock the locking pin 43 to the latch piece 46. In this state, when an earthquake occurs and the swing member 28 swings left and right, the shaft 35 is rotated via the rotation conversion means 36, and the engagement of the latch means 32 is released. Then, the operating member 30 is strongly slid rightward by the elastic biasing force of the tension coil spring 42, and the operation piece 34 pushes the protrusion 33 rightward to rotate the cam plate 25 counterclockwise. The lock rod 22 of the lock mechanism 11 is lowered to release the locked state.

  In this embodiment, the operating member 30 is attached by screwing the pedestal 37 to the support plate 19, and the bearing members 45 and 50 are similarly screwed to the support plate 19, and the swing member 28 or the seismic transmission mechanism 31. The swing member 28, the actuating member 30, and the seismic transmission mechanism 31 are mounted on the same plate to form a unit, and the seismic unlocking unit is associated with the lock mechanism 11 of the movable shelf 1. It is also a preferred embodiment to be attached to the support plate 19.

It is a whole perspective view of the manual type movement shelf concerning the present invention. It is the front view which abbreviate | omitted the front panel and showed the whole locking mechanism and seismic unlocking mechanism which concern on this invention. It is a side view similarly. It is a partial enlarged front view which shows the relationship between a lock mechanism and an operation member. Similarly, it is a cross-sectional plan view. It is a partial exploded perspective view of an operation member. It is the whole disassembled perspective view of an operation member similarly. The rocking | fluctuation member and a rotation conversion means are shown, (a) is a partial side view of the principal part, (b) is a partial front view of the principal part. It is a perspective view which similarly shows a rocking | swiveling member and a rotation conversion means. It is a disassembled perspective view of a rocking | fluctuation member and a rotation conversion means similarly.

1 mobile shelf, 2 rails,
3 passages, 4 drive wheels,
5 driven wheel, 6 operation handle,
7 sprocket, 8 sprocket,
9 Chain, 10 Loosening prevention means,
11 Lock mechanism, 12 Operation lever,
13 Seismic unlocking mechanism, 14 dolly,
15 struts, 16 shelves,
17 housing part, 18 front panel,
19 support plate, 20 base plate,
21 guide plate, 22 lock rod,
23 coil spring, 24 rotating shaft,
25 cam plate, 26 connecting rod,
27 fixing rod, 28 swinging member,
29 weights, 30 actuating members,
31 seismic transmission mechanism, 32 latch means,
33 Projection piece, 34 Operation piece,
35 shaft, 36 rotation conversion means,
37 pedestal, 38 linear guide,
39 mounting plate, 40 actuating plate,
41 locking piece, 43 tension coil spring,
43 Locking pin, 44 Sleeve,
45 bearing member, 46 latch piece,
47 tension coil spring, 48 bush,
49 bearing pieces, 50 bearing members,
51 bearing pieces, 52 bushings,
53 support pieces, 54 spindles,
55 shaft cylinder, 56 drive member,
57 Drive piece, 58 Notch.

Claims (4)

A plurality of movable shelves along a plurality of rails are arranged such that a driving wheel and a single or a plurality of driven wheels provided at the lower end of the rail roll on the rails so as to be movable relative to each other, and adjacent moving shelves move relatively. Thus, a passage having a predetermined width is formed between them, and the moving shelf device restricts the rotation of the driving wheel by a locking mechanism provided on the moving shelf, and the locking mechanism applies an external force greater than a predetermined amount. The swinging member having a weight at the lower end is pivotally supported in the vicinity of the carriage of the moving shelf so as to be swingable only in the moving direction of the moving shelf, and the position of the weight is determined by the carriage. An operating member for unlocking in the vicinity of the lock mechanism is movably provided, and the oscillation of the oscillation member is transmitted to the operation member by the seismic transmission mechanism to be operated, to unlock the lock mechanism Per the seismic transmission mechanism, seismic unlocking device in a mobile shelving system, characterized in that with a rotating conversion means for converting the rotation of the shaft that vertically swinging of the swinging member. The lock mechanism is provided at a middle position of the front panel of the movable shelf, and the seismic transmission mechanism is provided at a lower end portion of the shaft, and is provided at a lower end portion of the shaft. A rotation converting means for converting the oscillation of the shaft into a rotation and a latch means provided at the upper end portion of the shaft and engaged and disengaged by the rotation of the shaft. At the same time as the operating member is moved against the urging force and locked by the latch means, the lock mechanism is set to the locked state, and the swing of the swing member is transmitted by the rotation converting means and the shaft . The seismic lock releasing device in the moving shelf device according to claim 1 , wherein by releasing the latch means, the operating member is driven by an elastic biasing force to unlock the lock mechanism.   A projecting piece is provided on a part of the cam plate fixed to the rotation shaft of the operation lever of the lock mechanism so as to be orthogonal to the rotation shaft, and the operating member is slidably provided in the vicinity of the cam plate and moved. 3. The feeling in the movable shelf apparatus according to claim 2, further comprising an operation piece that is elastically urged in a direction and is further provided with an operation piece that contacts and drives the protruding piece on a part of the operating member, and the latch means is provided at an end. Seismic lock release device. The swinging member, a unit by mounting the operating member and seismic transmission mechanism on the same plate, to claim 1-3 or consisting mounted in association with sensitive Shin unlocking unit to the locking mechanism of the movable rack Seismic unlocking device in the described moving shelf device.

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