JP2004051233A - Moving shelf device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a moving shelf device in which a clearance interval between both shelves in a state of no working passage can be easily adjusted and a width dimension of the working passage can be easily changed without changing a mounting position of a sensor means. <P>SOLUTION: A pair of link rods 17, 18 bendable accompanying the movement of each shelf in an array direction are pivotally mounted to the adjacent shelves. Detection sensors 21, 22 are fixed in the vicinity of a pivotally mounting part of a tip end side of one link rod 17, and a supporting plate 27 is fixed in the vicinity of the pivotally mounting part of the tip end side of the other link rod 18. The supporting plate 27 is positionally adjustably provided with an abutting body 33 (37) to be detected by the detection sensor 21 (22) when a contained angle of both link rods 17, 18 becomes a prescribed angle θ1 (θ2). <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
According to the present invention, a plurality of shelves arranged in parallel are moved in the arrangement direction to form a work passage between adjacent shelves for a worker to take in and out articles on each shelf. The present invention relates to a mobile shelf device configured as described above.
[0002]
[Prior art]
In a conventional moving shelf device, a pair of link rods that can be bent along with the movement of each of these shelves in the arrangement direction are pivotally mounted on adjacent shelves in order to mainly route wiring of a lighting device or the like. Is known. In addition, utilizing the fact that the pair of link rods bend and move by the movement of each shelf, at least one of the link rods is connected to a shelf (hereinafter referred to as a base end) in the vicinity of the two shelves. It is also well known to provide a limit switch for detecting whether or not a work passage is formed therebetween (for example, Japanese Utility Model Publication No. 52-5950, Japanese Utility Model Publication No. 52-5954, and Japanese Patent Application Laid-Open No. 61-154611). And JP-A-4-39323).
[0003]
In the case where the limit switch is provided, the included angle of the pair of link rods is detected by detecting whether or not the operating portion of the limit switch is pressed against the link rod or a contact body provided at the base end thereof. It was determined whether or not a predetermined angle was reached (whether the two link rods were in a predetermined closed position or a predetermined open position) and whether a work passage was formed between the two shelves. .
[0004]
[Problems to be solved by the invention]
However, in the above-described conventional configuration, the limit switch is provided near the base end of the link rod after the movable shelf device is installed at the assembly site, so that there is no working path (close proximity) between the two shelves. If you want to make fine adjustments to the gap distance between the two or change the width of the work passage (the distance between the two shelves when adjacent shelves are separated), change the mounting position of the limit switch each time. At the same time, it is necessary to adjust the detection function of the limit switch, which is troublesome and troublesome.
[0005]
Therefore, it is a technical object of the present invention to provide a mobile shelf device that solves such a problem.
[0006]
[Means for Solving the Problems]
In order to solve this technical problem, the invention according to claim 1 is configured such that a plurality of shelves arranged in parallel are moved in the arrangement direction to form a work passage between adjacent shelves. In the movable shelf device, a pair of link rods that can be bent with the movement of each of these shelves in the arrangement direction are pivotally connected to adjacent shelves, and near one of the link rods on the distal end side of one of the link rods. At least one sensor means is fixed, and a detected means is detected by the sensor means in the vicinity of the pivotal portion on the tip end side of the other link rod when the included angle of the pair of link rods becomes a predetermined angle. Is provided.
[0007]
According to a second aspect of the present invention, in the movable shelf device according to the first aspect, the detected means is configured to be adjustable in position with respect to the other link rod.
[0008]
According to a third aspect of the present invention, in the movable shelf device according to the first or second aspect, the detected means can be adjusted in position with respect to a support plate fixed near a pivotal portion on the distal end side of the other link rod. It is the object to be detected attached to.
[0009]
According to a fourth aspect of the present invention, in the moving shelf apparatus according to the first aspect, the detected means is a plate fixed near a pivotal portion on the tip end side of the other link rod, and the plate includes the plate. When the included angle of the pair of link rods becomes a predetermined small angle, and when the included angle becomes a predetermined large angle, respectively, the sensor unit detects the edge, and within the range of the large and small included angles. The sensor means is provided with a notch portion in a non-detection state.
[0010]
According to a fifth aspect of the present invention, in the moving shelf device according to the first aspect, the detected means is a plate fixed near a pivotal portion on a tip end side of the other link rod, and The shape of the plate is set so that the sensor means detects the plate when the included angle is within a predetermined angle range, and the sensor means is not detected when the included angle is out of the included angle range.
[0011]
According to a sixth aspect of the present invention, in the movable shelf device according to the first aspect, the detected means is a plate fixed near a pivotal portion on a tip end side of the other link rod, and the plate includes the plate. When the included angle between the pair of link rods is a predetermined angle, a notch or a detection hole is formed at a position opposed to the relative rotation position of the sensor means with respect to the plate to make the sensor means not detectable. Things.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0013]
1 to 4 show a first embodiment of a mobile shelf apparatus to which the present invention is applied. Here, FIG. 1 is a schematic perspective view of the movable shelf device, FIG. 2 is a schematic plan view of the movable shelf device, FIG. 3 is an enlarged plan view near a bent portion of the pair of link rods, and FIG. FIG.
[0014]
As shown in FIG. 1 and FIG. 2, a plurality of (two in the embodiment) one set of rails 10 are arranged parallel to a side of a main passage A that is linear in plan view in a room such as an office or a storage. A large number of shelves 11 are laid and extend in a direction substantially perpendicular to the set of rails 10 in plan view.
[0015]
In the following description, for convenience, the worker looks at the movable shelf device from the main passage A side, and the longitudinal direction of the rail 10 (the arrangement direction of the shelves 11) is the left-right direction, and the direction substantially orthogonal to the rail 10 in plan view is the front and rear. Called direction.
[0016]
Although not shown in detail, a drive wheel and a driven wheel that roll on the rail 10 are provided on the lower surface of each shelf 11. The shelves 11 of this embodiment are electrically driven, and each of the shelves 11 is independently moved along a set of rails 10 by an electric motor (not shown) that can be rotated forward and backward mounted on the lower part of each of the shelves 11. I can do it.
[0017]
Therefore, when an arbitrary number of shelves 11 are bundled and simultaneously moved to the left or right, a work passage W communicating with the main passage A is formed between the moved shelves 11 and the other shelves 11. can do.
[0018]
Note that the position of only the shelf 11 located at one end or both ends of one set of rails 10 may be fixed. Although not shown, each shelf 11 is provided with a buffer spacer such as rubber or a spring in order to reduce an impact caused by a collision between the adjacent shelves 11 and 11.
[0019]
The storage space S of each shelf 11 opens toward the work passage W. The storage space S of each shelf 11 may be opened on only one of the left and right sides, or may be opened on both the left and right sides.
[0020]
An operation panel 14 having a passage selection switch, an execution switch, a stop switch, and the like is attached to a side panel 12 of each shelf 11 facing the main passage A. With these switches, operations such as selection (right or left of the shelf 11), execution (movement of the shelf 11), and emergency stop are performed.
[0021]
Adjacent shelves 11, 11 are connected to each other via a link mechanism 16 including a pair of link rods 17, 18 having a U-shaped cross section. In this case, the base end of each link rod 17 (18) is pivotally connected to a support bracket 15 fixed to a portion of the upper surface panel 13 of each shelf 11 near the side panel 12 by a pin 19 so as to be horizontally rotatable. Have been. The distal ends of the link rods 17 and 18 are pivotally connected via hinges 20 so as to be horizontally rotatable.
[0022]
The link mechanism 16 (a pair of left and right link rods 17, 18) is formed by the two link rods 17, 18 by moving one or both of the adjacent shelves 11, 11 right and left outward (in a direction away from them). Bend and rotate so that the included angle θ expands or contracts within a predetermined angle range (in the embodiment, the angle θ1 to the angle θ2) (see the solid line and the two-dot chain line in FIG. 3).
[0023]
As can be seen from this, the included angle θ between the two link rods 17, 18 corresponds to the width dimension M of the work passage W between the adjacent shelves 11, 11 (see FIGS. 1 and 2). In other words, the width dimension M of the work passage W between the adjacent shelves 11, 11 is determined by the included angle θ of both link rods 17, 18.
[0024]
Although not shown in detail, for example, a biasing means such as a spring is inserted between the base ends of both link rods 17 and 18 so that the angle between the two link rods 17 and 18 becomes larger. It is preferable that the front ends of the link rods 17 and 18 are always located between the adjacent shelves 11 and 11 if they are biased.
[0025]
The hinge 20 is composed of a pivot 20c and left and right blades 20a and 20b rotatable relative to the pivot 20c. 20a is fixed by welding, while the right blade 20b is fixed by welding to the inner surface of the distal end of the left plate 18a of the right link rod 18 (see FIG. 3). In the first embodiment, the hinge 20 corresponds to the pivot portion described in the claims.
[0026]
Next, a configuration for detecting whether or not the work passage W is formed between the adjacent shelves 11, 11 will be described with reference to FIGS.
[0027]
On the outer surface of the distal end portion of the left side plate 17a of the left link rod 17, limit switch type detection sensors 21 and 22 as examples of sensor means are pivoted on the hinge 20 with double screw bolts 23 and nuts 24a and 24b. They are mounted so as to be arranged in the radial direction with the center at 20c.
[0028]
When the included angle between the two link rods 17 and 18 becomes a predetermined small angle θ1, the first detection sensor 21 on the inner side in the radial direction detects the first contact body 33 attached to the support plate 27 described later. The two shelves 11, 11 are configured so as to be able to determine that the work passage W has disappeared due to approach or contact. On the other hand, when the included angle between the two link rods 17 and 18 becomes a predetermined large angle θ2, the second detection sensor 22 on the outer side in the radial direction detects the second contact body 37 attached to the support plate 27. Thus, it is configured such that it is possible to determine that a work passage W having a predetermined width M is formed between the two shelves 11, 11 (see FIGS. 2 and 3).
[0029]
On the lower surface of each detection sensor 21 (22), a lever-type operating portion 25 (26) for detecting a contact body 33 (37) mounted on a support plate 27 described later is provided to be vertically movable. The operating portion 25 (26) is constantly urged downward by a spring or the like (not shown). The operating section of each detection sensor 21 (22) is not limited to the lever type, and may be a plunger type.
[0030]
As shown in FIGS. 2 and 3, a metal or synthetic resin support plate 27 having a substantially semicircular shape in plan view and bolts 29, 29 is interposed between spacers 28 on the lower surface of the distal end of the right link rod 18. And a nut (not shown).
[0031]
Thus, the right link rod 18 and the support plate 27 rotate integrally about the pivot 20 c of the hinge 20. Further, since the spacer 28 is interposed between the right link rod 18 and the support plate 27, the link mechanism 16 (both link rods 17 and 18) includes the lower plate 17b of the left link rod 17 and the support plate 27. Bending and turning can be smoothly performed without contact. This plate corresponds to the support plate described in claim 3.
[0032]
On the upper surface of the support plate 27, a detection object as detection means is provided at a position facing the relative rotation position of each detection sensor 21 (22) when the included angle between both link rods 17 and 18 is a predetermined angle. The contact body 33 (37) having a substantially rectangular shape in a plan view is attached so as to be position-adjustable (see FIG. 3).
[0033]
In this embodiment, the two insertion holes 34, 34 (38, 38) of the contact body 33 (37) placed on the support plate 27, and the respective mounting slots 31 (32) drilled in the support plate 27. At this time, bolts 35, 35 (39, 39) are inserted, and nuts (not shown) are screwed into these bolts 35 (39) from below.
[0034]
Each of the mounting groove holes 31 (32) of the support plate 27 has an arc shape substantially along the relative rotation direction (see the RE direction in FIG. 3) of each of the detection sensors 21 (22) with respect to the support plate 27. The phases and radial positions of the holes 31 and 32 are shifted so as not to overlap each other. In the embodiment, the second mounting slot 32 is located radially outward of the first mounting slot 31 due to the arrangement of the detection sensors 21 and 22.
[0035]
Since the bolts 35 (39) for fixing the contact body 37 penetrate the mounting slots 31 (32), if the nuts screwed into these are slightly loosened, the mounting grooves on the support plate 27 are loosened. The contact body 33 (37) can be moved along the hole 31 (32). Thereby, the position of each contact body 33 (37) can be adjusted with respect to the support plate 27 and thus with respect to the right link rod 18 to which the support plate 27 is fixed.
[0036]
With such a configuration, by adjusting the mounting position of the first abutting body 33 on the inner side in the radial direction with respect to the support plate 27, the size of the included angle θ1 when the link mechanism 16 is closed can be adjusted. The gap between the two shelves 11, 11 in the state (the state without the work passage W) can be easily adjusted.
[0037]
Further, the circumferential length of the second mounting slot 32 is longer than that of the first mounting slot 31, and within the range of the circumferential length of the second mounting slot 32, Since the mounting position of the radially outer contact body 37 with respect to the support plate 27 can be adjusted, the size of the included angle θ2 when the second detection sensor 22 detects the second contact body 37, in other words, the link The size of the included angle θ2 when the mechanism 16 is open can be changed, and as a result, the width dimension M of the work passage W can be easily changed and adjusted.
[0038]
As described above, when it is desired to adjust the clearance between the two shelves 11 and 11 without the work passage W or to change the width dimension M of the work passage W, the contact body 33 on the detection side is required. The mounting position of the two detection sensors 21 and 22 on the detection side does not need to be changed since the mounting position of the detection sensor 21 and 22 on the support plate 27 need only be changed and adjusted. Adjustment of functions and the like becomes unnecessary, and adjustment of the gap distance and width adjustment of the work passage W can be performed extremely easily.
[0039]
In addition, since a nut is screwed onto each of the bolts 35 (39) from below, the operator adjusts the position of each contact body 33 (27) from below the support plate 27. For example, a tall worker can work without using a stepladder or a ladder, and even when using a stepladder, etc., the worker does not need to climb the stepladder or the like to a high position, so there is little danger of falling etc. It is considered.
[0040]
As shown in FIGS. 3 and 4, each of the insertion holes 34 (38) of the first and second abutting bodies 33 (37) is formed in a constricted shape, and the bolts 35 (39) to be inserted therein are formed. The head has a dish head shape. With this configuration, the head of the bolt 35 (39) does not protrude upward from the upper surface of the contact body 33 (37). It does not hinder the relative movement of 25 (26).
[0041]
Both edges of each abutting body 33 (37) intersecting the relative rotation direction RE of each of the detection sensors 21 (22) with respect to the support plate 27 form a respective one of the operating portions 25 ( 26) is formed so as to be inclined obliquely upward toward the center of the contact body 33 (37) in order to smoothly ride the contact body 33 (37).
[0042]
For example, when the two first detection sensors 21 are arranged in the radial direction and the included angle of the link mechanism 16 becomes a predetermined small angle θ1, both of the two first detection sensors 21 and 21 are supported by the support plate 27. May be configured to be able to detect the first contact body 33 attached to the first contact member. In this case, if one is used as the sensor 21 for detecting the contact body 33 and the other is used as the spare sensor 21, even if one of the detection sensors 21 fails, the spare sensor 21 can be used instead. Can be determined. It goes without saying that the second detection sensors 22 can also be juxtaposed in the radial direction in the same manner.
[0043]
In addition, appropriate holes 40 (for reducing the weight of the support plate 27) are provided in appropriate portions of the support plate 27 other than the insertion slots 31 and 32 and the insertion holes through which the bolts 29 for fixing the support plate 27 are inserted. In the embodiment, three are drilled.
[0044]
Further, on the lower surface of the support plate 27, there is provided an ingress / egress detection sensor 41 (personal sensor), such as an optical sensor, for detecting ingress and egress of an operator or the like in the work passage W, or detecting the number and number of ingress and egress. (See FIGS. 1 and 4). With this configuration, the in / out detection sensor 41 does not hinder the bending and rotation of the link mechanism 16 and can grasp the ingress / exit of a person in the work passage W. Therefore, both shelves 11, 11 are inadvertently closed, and It is possible to prevent an accident that a person is pinched.
[0045]
Next, a description will be given of an operation procedure for taking articles in and out of an arbitrary shelf 11 and an operation mode of the movable shelf apparatus at this time.
[0046]
In a state where there is no work passage W between two adjacent shelves 11, 11 (a state where the shelves 11, 11 are close to each other), the included angle of the link mechanism 16 corresponding to the two shelves 11, 11 is a predetermined small angle. θ1, the operating portion 25 of the first detection sensor 21 rides on the radially inner contact body 33, and the first detection sensor 21 is in the detection state (see the solid line state in FIG. 3 and FIG. 4). ). On the other hand, the second detection sensor 22 is in the non-detection state because the phases and the radial positions of the two contact bodies 33 and 37 are shifted so as not to overlap each other. When the first detection sensor 21 is in the detection state, the electric motor does not drive the shelves 11, 11 in a direction to approach each other.
[0047]
When one of the shelves 11 is moved away from the other shelf 11 by an electric motor (not shown) by a switch operation of the operation panel 14 on one of the two shelves 11, 11, 11, a work passage W is formed, and the link mechanism 16 bends and turns in a direction to widen the included angle.
[0048]
In this case, the two detection sensors 21 and 22 on the left link rod 17 rotate relatively with respect to the support plate 27 fixed to the right link rod 18, so that the operating portion 25 of the first detection sensor 21 abuts. The body is separated from the body 33 and both the first and second detection sensors 21 and 22 are in a non-detection state.
[0049]
When the link mechanism 16 bends and turns until the included angle reaches a predetermined large angle θ2, the operating portion 26 of the second detection sensor 22 rides on the radially outer contact body 37, and only the second detection sensor 22 Becomes a detection state (see a two-dot chain line state in FIG. 3).
[0050]
The electric motor stops based on the detection signal of the second detection sensor 22, and the one shelf 11 stops. In this way, a work passage W having a width dimension M through which a worker can enter is formed between the two shelves 11, 11 (see FIGS. 1 and 2). When the second detection sensor 22 is in the detection state, the electric motor does not drive the shelves 11, 11 in a direction away from each other.
[0051]
Thereafter, when one of the shelves 11 is moved by an electric motor so as to approach the other shelf 11 by a switch operation of the operation panel 14 on one of the two shelves 11, 11, the link mechanism 16 narrows the included angle. Since the operating portion 26 of the second detection sensor 22 separates from the contact body 37, the first and second detection sensors 21 and 22 are in a non-detection state.
[0052]
When the link mechanism 16 bends and turns until it reaches the small included angle θ1, and the operating portion 25 of the first detection sensor 21 rides on the contact body 33 to be in the detection state, the detection signal of the first detection sensor 21 is detected. , The electric motor stops, and the one shelf 11 stops in the state of being close to the other shelf 11.
[0053]
As can be seen from the above operation mode, according to the movable shelf device of the first embodiment, the two shelves 11, 22 are provided by the provision of the two detection sensors 21 and 22 and the contact members 33 and 37 corresponding thereto. It is possible to determine whether or not the work passage W has been formed between the eleventh and the eleventh.
[0054]
By the way, in general, the earliest minute movement range in the operation section of the limit switch is set so as not to be detected as a dead zone. In the configuration in which the operating portion is directly pressed, there is a problem that a detection deviation (detection error) exists between a predetermined included angle to be detected by the pair of link rods and an included angle actually detected by the limit switch. .
[0055]
In addition, if the mounting position of the limit switch is slightly deviated from a predetermined position, the deviation of the mounting position and the dead zone are combined to increase the detection error.
[0056]
On the other hand, in the case of the moving shelf device of the first embodiment, as can be seen from the above-described operation mode, the bending rotation direction of the link mechanism 16 is substantially along the horizontal plane, while the detection sensor 21 , 22 move in the vertical (vertical) direction, and both are substantially perpendicular to each other. Thus, the presence or absence of the work passage W between the two shelves 11, 11 can be reliably and accurately detected without being affected by the dead zone in the operating portions 25, 26.
[0057]
Each embodiment shown in FIGS. 5 to 7 is another example of the detected means. Here, in the embodiments described below, those having the same configuration and operation as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.
[0058]
In the second embodiment shown in FIG. 5, the limit switch type detection sensors 21 and 22 are provided with bolts and bolts on a substantially bracket-shaped mounting bracket 50 fixed to the outer surface of the distal end of the left side plate 17a of the left link rod 17. Fastened with nuts. In this embodiment, the second detection sensor 22 is located radially inward, and the first detection sensor 21 is located radially outward.
[0059]
A metal or synthetic resin plate 51 having a substantially circular shape in plan view is fastened to the lower surface of the distal end portion of the right link rod 18 with bolts 52, 52 and nuts (not shown). Is formed with a substantially arc-shaped notch portion 54 in a plan view substantially along the relative rotation direction of each of the detection sensors 21 and 22 with respect to the plate 51 (see the RE direction in FIG. 5).
[0060]
One of the two radial edges of the notch portion 54 is detected when the operating portion 25 of the first detection sensor 21 on the outside of the radius rides when the included angle of the link mechanism 16 becomes a predetermined small angle θ3. The second detection sensor 22 inside the radius and inside the radius is formed in a step shape in plan view so as to be located in the notch portion 54 and not in the detection state.
[0061]
When the included angle of the link mechanism 16 becomes a predetermined large angle θ4, the other edge portion is set in the detection state by the second detection sensor 22 inside the radius getting into the detection state, and the first detection sensor 21 outside the radius is turned off. It is formed in a step shape in a plan view so as to be located in the notch 54 and in a non-detection state.
[0062]
In this embodiment, when the included angle of the link mechanism 16 becomes a predetermined small angle θ3, only the first detection sensor 21 is in the detection state (see the solid line state in FIG. 5), so that the two shelves 11, 11 Is configured to be able to determine that the work passage W has disappeared due to approach or contact.
[0063]
On the other hand, when the included angle of the link mechanism 16 becomes the predetermined large angle θ4, only the second detection sensor 22 is in the detection state (see the two-dot chain line state in FIG. 5), so that the two shelves 11, 11 The configuration is such that it can be determined that a work passage W having a predetermined width M is formed therebetween.
[0064]
Each of the detection edges 54a (54b) of the notch 54 is formed in an obliquely upward slant so as to allow each of the operating portions 25 (26) to ride on smoothly when the link bars 17 and 18 are bent and rotated. I have. In the second embodiment, the plate 51 corresponds to a detection target described in claims.
[0065]
By the way, in the second embodiment, only one detection sensor is provided, and when the included angle of the link mechanism 16 becomes a predetermined small angle θ3, the operating portion of the detection sensor is attached to one edge of the notch 54. It is also possible to adopt a configuration in which the operating portion is made to ride on the other edge when the included angle becomes a predetermined large angle θ4.
[0066]
However, in the above configuration, when the detection sensor rides on one of the edges of the notch 54 and enters the detection state, it is determined whether the included angle of the link mechanism 16 is a predetermined small angle θ3. It is difficult to determine whether the angle θ4 is large.
[0067]
On the other hand, in the configuration of the second embodiment, the two detection sensors 21 and 22 are provided, and both edges of the notch 54 provided in the plate 51 in the radial direction are formed so that the included angle of the link mechanism 16 is equal to the predetermined angle. When this happens, one of the detection sensors is in a detection state and the other detection sensor is in a non-detection state, and is formed in a step-like shape in plan view, so that a work passage W is formed between the two shelves 11, 11. It is possible to reliably determine whether or not it has been performed.
[0068]
Further, in this embodiment, since the length of the notch 54 in the circumferential direction is constant, the angle obtained by subtracting the predetermined small included angle θ3 from the predetermined large included angle θ4 of both link rods 17 and 18 does not change. For this reason, the opening / closing amount between the adjacent shelves 11, 11 is constant, and the width dimension M of the work passage W cannot be largely changed.
[0069]
However, as shown in FIG. 5, the insertion holes 53 (two in the embodiment) of the plate 51 through which the bolts 52 are inserted are substantially arc-shaped around a position corresponding to the pivot 20 c of the hinge 20 in plan view. Therefore, the position of the plate 51 with respect to the right link rod 18 can be adjusted.
[0070]
Accordingly, the relative phase relationship between the two detection sensors 21 and 22 and the notch 54 of the plate 51 can be adjusted, so that the position of the two detection sensors 21 and 22 on the detection side can be adjusted without changing the mounting position. Fine adjustment of the gap between the shelves 11 and the width dimension M of the work passage W can be easily performed.
[0071]
In addition, the plate 51 is mounted on the right link rod 18 so as to be position-adjustable by screwing a nut onto the bolts 52, 52 from below, so that in this case also, the operator can adjust the position of the plate 51. Can be performed from below the plate 51.
[0072]
Further, also in this case, the bending direction of the link mechanism 16 is substantially along the horizontal plane, whereas the moving direction of the operating portions 25 and 26 in each of the detection sensors 21 and 22 is the vertical (up and down) direction. Both are substantially orthogonal.
[0073]
Therefore, the presence or absence of the work passage W between the two shelves 11, 11 can be reliably and accurately detected without being affected by the dead zone in the operating portions 25, 26. In addition, a slot may be formed in the plate 51 instead of the notch 54.
[0074]
The third embodiment shown in FIG. 6 is a modification of the above-described second embodiment.
[0075]
When the included angle of the link mechanism 16 becomes a predetermined small angle θ5, the relative rotation position of the first detection sensor 21 (in a solid line state in FIG. 6) is fixed to a plate 51 ′ fixed to the lower surface of the distal end portion of the right link rod 18. And a notch portion 56 into which the operating portion 25 of the first detection sensor 21 falls, and the relative rotation position of the second detection sensor 22 when the included angle becomes a predetermined large angle θ6. A detection hole 57 into which the operating portion 26 of the second detection sensor 22 falls is formed in a portion facing (see a two-dot chain line state in FIG. 6).
[0076]
In this embodiment, when the included angle of the link mechanism 16 becomes a predetermined small angle θ5, the operating portion 25 of the first detection sensor 21 fits into the notch portion 56, and only the first detection sensor 21 does not detect. By being in the state, the two shelves 11, 11 are configured to be able to determine that the work passage W has disappeared due to the proximity or contact.
[0077]
On the other hand, when the included angle of the link mechanism 16 becomes a predetermined large angle θ6, the operating portion 26 of the second detection sensor 22 fits into the detection hole 57, and only the second detection sensor 22 is in the non-detection state. Thus, it is possible to determine that a work passage W having a predetermined width M is formed between the two shelves 11, 11.
[0078]
The edge 56a (57a) of the notch 56 (detection hole 57) that intersects the relative rotation direction RE of the detection sensor 21 (22) with respect to the plate 51 'is actuated when both link rods 17 and 18 bend and rotate. In order to allow the part 25 (26) to ride on smoothly, it has an inclined surface inclined obliquely upward.
[0079]
As described above, in the third embodiment, the work passage W is formed between the two shelves 11 by the two detection sensors 21 and 22 and the notch 56 and the detection hole 57 of the plate 51 ′ corresponding to the two sensors. It can be determined whether or not it has been formed.
[0080]
Also, in the third embodiment, the position of the plate 51 'is configured to be adjustable with respect to the right link rod 18, and by adjusting the mounting position of the plate 51' with respect to the right link rod 18, each detection sensor 21 is adjusted. Since the relative phase relationship between (22) and the notch 56 (detection hole 57) can be adjusted, the mounting positions of the two detection sensors 21 and 22 on the detection side are changed as in the second embodiment. Further, it is possible to easily finely adjust the gap between the two shelves 11 and 11 in the close state and finely adjust the width dimension M of the work passage W.
[0081]
In addition, the plate 51 'is attached to the right link rod 18 so as to be adjustable by screwing a nut onto the bolts 52, 52 from below. The adjusting operation can be performed from below the plate 51 '.
[0082]
Further, also in this case, the bending direction of the link mechanism 16 is substantially along the horizontal plane, whereas the moving direction of the operating portions 25 and 26 in each of the detection sensors 21 and 22 is the vertical (up and down) direction. Since they are substantially perpendicular to each other, the presence or absence of the work passage W between the two shelves 11, 11 can be reliably and accurately detected without being affected by the dead zone in the operating portions 25, 26.
[0083]
In the fourth embodiment shown in FIG. 7, a limit switch type detection sensor as an example of a sensor means is provided on a mounting bracket 50 which is fixed to the outer surface of the distal end of the left side plate 17a of the left link rod 17 and which is a rectangular shape in plan view. 21 is fastened with bolts and nuts.
[0084]
The sensor means of the fourth embodiment is only one, and when the included angle of the link mechanism 16 becomes a predetermined small angle θ7, the detection sensor 21 separates from a plate 60 to be described later to be in a non-detection state. It is configured such that it is possible to determine that the work passage W has disappeared due to the shelves 11, 11 approaching or abutting.
[0085]
A metal plate 60 having a substantially rectangular shape in a plan view is fastened to the lower surface of the distal end portion of the right link rod 18 with bolts 61, 61 and nuts (not shown). In the fourth embodiment, the plate 60 corresponds to a detection target described in claims.
[0086]
The insertion holes 62 (two in the embodiment) of the plate 60 through which the bolts 61 are inserted are substantially arc-shaped around a position corresponding to the pivot 20c of the hinge 20 in plan view. The position of the rod 18 can be adjusted.
[0087]
When the included angle between the two link rods 17 and 18 is within a predetermined large angle range, the operating portion 25 of the first detection sensor 21 is located on the upper surface of the plate 60 to be in the detection state, and the included angle between the two link rods 17 and 18 is within the aforementioned range. The relative positional relationship between the detection sensor 21 and the plate 60 is set such that the operating portion 25 falls off the plate 60 to be in a non-detection state when the predetermined small angle θ7 is exceeded. A part 60a of the peripheral edge of the plate 60 is formed in an obliquely upward slant so as to allow the operating portion 25 to ride on smoothly when the link bars 17 and 18 are bent and rotated.
[0088]
In such a configuration, by adjusting the mounting position of the plate 60 with respect to the right link rod 18, the size of the included angle θ7 when the link mechanism 16 is closed can be adjusted. It is possible to finely adjust the gap between the two shelves 11, 11 in the close state without changing.
[0089]
In addition, while the bending and rotating direction of the link mechanism 16 is substantially along the horizontal plane, the moving direction of the operating portion 25 in the detection sensor 21 is a vertical (up and down) direction, and both are substantially orthogonal. The absence of the work passage W between the two shelves 11, 11 can be reliably and accurately detected without being affected by the dead zone in the operating section 25.
[0090]
Further, the plate 60 is attached to the right link rod 18 so as to be position-adjustable by screwing a nut onto the both bolts 61, 61 from below, so that in this case also, the operator needs to adjust the position of the plate 60. Can be performed from below the plate 60.
[0091]
Also in the fourth embodiment, two detection sensors are provided, and when the included angle of the link mechanism 16 becomes a predetermined small angle θ7, only the operating part of one detection sensor is separated from the plate 60 and is not detected. By being in the state, the two shelves 11, 11 are configured to be able to determine that the work passage W has disappeared due to approaching or contacting, and when the included angle of the link mechanism 16 becomes a predetermined large angle, another one is obtained. When only the operating portions of the two detection sensors are separated from the plate 60 to be in the non-detection state, it is possible to determine that a work passage W having a predetermined width M is formed between the two shelves 11, 11. is there.
[0092]
Further, the plate 60 may have various shapes such as a substantially circular shape and a triangular shape in plan view. The point is that the detection sensor 21 detects the plate 60 when the included angle between the two link rods 17 and 18 is within a predetermined angle range, and the detection sensor 21 is set to be in the non-detection state when the included angle is out of the included angle range. Good.
[0093]
The present invention is not limited to the above embodiments, but can be embodied in various forms. For example, the moving shelf device according to the present invention may be a simple manual type in which a handle is simply pushed and pulled manually, or a manual type in which a handle is rotated to move. Further, the sensor means in the present invention is not limited to the limit switch type such as the detection sensors 21 and 22, but may be a proximity switch type.
[0094]
【The invention's effect】
With this configuration, at least one sensor means is fixed near the pivot portion on the distal end side of one link rod, and the pair of links is located near the pivot portion on the distal end side of the other link rod. Since the detection means is detected by the sensor means when the included angle of the rod becomes a predetermined angle, for example, when it is desired to finely adjust the gap between the two shelves in a close state, or when the gap is formed between the two shelves. If it is desired to change the width dimension of the working passage, the position at which the detected means is attached to the other link rod may be changed and adjusted, and it is not necessary to change the attachment position of the sensor means.
[0095]
Therefore, it is not necessary to adjust the detection function and the like in accordance with the change in the position of the sensor means, so that the adjustment of the gap distance and the adjustment of the width of the work passage can be performed very easily.
[0096]
According to the structure as described in claim 2, since the position of the detected means can be adjusted with respect to the other link rod, the sensor means can be adjusted by adjusting the mounting position of the detected means with respect to the other link rod. Thus, the size of the included angle of the pair of link rods when the detected means is detected can be changed, and thus the width of the working passage can be changed and adjusted.
[0097]
The inventions of claims 3 to 6 embody the configuration of the mobile shelf apparatus according to the invention of claim 1 (only claim 3 is also a dependent claim of claim 2). In any of the inventions, the operation and effect of the first aspect can be reliably achieved with a simple configuration in which a detection target, a plate, or the like is employed as the detection target.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view of a moving shelf device according to a first embodiment.
FIG. 2 is a schematic plan view of the moving shelf device.
FIG. 3 is an enlarged plan view near a bent portion of a pair of link rods.
FIG. 4 is a sectional side view taken along line IV-IV of FIG. 3;
FIG. 5 is an enlarged plan view near a bent portion of a pair of link rods according to a second embodiment.
FIG. 6 is an enlarged plan view near a bent portion of a pair of link rods according to a third embodiment.
FIG. 7 is an enlarged plan view near a bent portion of a pair of link rods according to a fourth embodiment.
[Explanation of symbols]
A main passage
W Work passage
M width dimension
11 shelves
16 Link mechanism
17,18 link rod
20 Hinge
21,22 detection sensor
25, 26 working part
27 Support plate
31, 32 Mounting slot
33,37 abutment
51, 51 ', 60 plates
54,56 Notch
57 Detection hole

Claims (6)

By moving a plurality of shelves arranged in parallel in the arrangement direction, a moving shelf device configured to form a work passage between adjacent shelves,
A pair of link rods that can be bent with the movement of each of these shelves in the arrangement direction are pivotally connected to adjacent shelves,
At least one sensor means is fixed in the vicinity of the pivot portion on the distal end side of one link rod, and the included angle of the pair of link rods is a predetermined angle in the vicinity of the pivot portion on the distal end side of the other link rod. A moving shelf device provided with a detecting means which is detected by the sensor means when the moving shelf device is in a state of being moved. The moving shelf device according to claim 1, wherein the detected means is configured to be adjustable in position with respect to the other link rod. 3. The detection object according to claim 1, wherein the detection means is a detection object which is attached to a support plate fixed to a vicinity of a pivot portion on a tip end side of the other link rod so as to be adjustable in position. Moving shelf equipment. The detected means is a plate fixed in the vicinity of a pivot portion on the distal end side of the other link rod,
In this plate, the sensor means detects an edge when the included angle of the pair of link rods becomes a predetermined small angle and when the included angle becomes a predetermined large angle. 2. The moving shelf device according to claim 1, wherein a cutout portion is provided in which the sensor means is in a non-detection state within a range of the included angle. The detected means is a plate fixed in the vicinity of a pivot portion on the distal end side of the other link rod,
The shape of the plate is set such that the sensor means detects the plate when the included angle of the pair of link rods is within a predetermined angle range, and the sensor means is not detected outside the included angle range. The mobile shelf device according to claim 1, wherein: The detected means is a plate fixed in the vicinity of a pivot portion on the distal end side of the other link rod,
This plate has a notch or a notch for disabling the sensor means at a position facing a relative rotation position of the sensor means with respect to the plate when the included angle of the pair of link rods is a predetermined angle. The mobile shelf device according to claim 1, wherein a detection hole is formed.

Images