Reel holder and reel storage unit

Abstract

To further enhance the versatility of the reel storage rack. [Solution] A reel holder comprising an arc-shaped lever for holding a disc-shaped reel along the outer circumference of the disc shape, wherein the lever has a first arc portion and a second arc portion extending toward opposite sides in the circumferential direction of the disc shape, and a plurality of arc surfaces with different curvatures are provided on the reel-holding side of at least one of the first arc portion or the second arc portion such that the curvature increases sequentially toward the extending direction of the first arc portion or the second arc portion.

Description

Technical Field

[0001] The present invention relates to a reel holder and a reel storage unit.

Background Art

[0002] For electronic components, there is a packaging form in which chip-shaped electronic components are stored in a long tape, and the tape containing the electronic components is wound around a disc-shaped reel and packaged. Such a reel is stored, for example, in a reel shelf having a plurality of reel storage sections. In each of the plurality of reel storage sections, the reel is stored such that the disc shape of the reel is perpendicular to the mounting surface.

[0003] For example, Patent Document 1 below discloses a storage cart capable of arranging and storing 80 reels containing electronic components in 14 rows on a shelf.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, since the storage cart disclosed in Patent Document 1 is assumed to store reels of a single shape, it has been difficult to store reels of a plurality of outer diameters in a mixed manner. Therefore, in order to further enhance the versatility of the reel storage shelf, it has been desired to store reels of a plurality of outer diameters in a mixed manner.

[0006] Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a novel and improved reel holder and a reel storage unit capable of further enhancing the versatility of the reel storage shelf.

Means for Solving the Problems

[0007] To solve the above problems, according to one aspect of the present invention, a reel holder is provided, comprising an arc-shaped lever for holding a disc-shaped reel along the outer circumference of the disc shape, wherein the lever has a first arc portion and a second arc portion extending toward opposite sides in the circumferential direction of the disc shape, and a plurality of arc surfaces with different curvatures are provided on the reel-holding side of at least one of the first arc portion or the second arc portion such that the curvature increases sequentially toward the extending direction of the first arc portion or the second arc portion.

[0008] The plurality of arcuate surfaces may be provided on the holding side of both the first and second arcuate portions of the reel.

[0009] Each of the aforementioned multiple arc surfaces may be provided with the same radius of curvature and center of curvature across both the first and second arc portions.

[0010] Each of the plurality of arcuate surfaces may hold the reels, each having a disc shape with a different radius from the others.

[0011] The first arc portion may extend toward the first side toward which the reel is fed into the lever, and the second arc portion may extend toward the second side opposite to the first side.

[0012] When the reel is inserted into the lever, the lever may rotate around an axis perpendicular to the extending direction of the first and second arc portions.

[0013] The second rear end of each of the plurality of arcuate surfaces provided in the second arcuate portion may be located on the second side of the intersection point between the trajectory of the rotation of the center of gravity of the reel loaded into the lever and the second arcuate portion.

[0014] The lever may be rotated until the center of gravity of the reel loaded onto the lever is on the second side of the lever's pivot axis.

[0015] A stopper may be provided on the side of the second arc portion opposite to the side that holds the reel, to stop the rotation of the lever.

[0016] Furthermore, in order to solve the above problems, according to another aspect of the present invention, a reel storage unit is provided, comprising a reel holder including an arc-shaped lever that holds a disc-shaped reel along the outer circumference of the disc shape, wherein the lever has a first arc portion and a second arc portion that extend toward opposite sides in the circumferential direction of the disc shape, and a plurality of arc surfaces with different curvatures are provided on the reel-holding side of at least one of the first arc portion or the second arc portion such that the curvature increases sequentially toward the extending direction of the first arc portion or the second arc portion.

[0017] The system may further include a light-emitting part that emits light when the reel is held by the lever, and a light-guiding part provided below the lever on the side opposite to the side that holds the reel, which guides the light emitted from the light-emitting part. [Effects of the Invention]

[0018] As explained above, the present invention makes it possible to further enhance the versatility of the reel storage rack. [Brief explanation of the drawing]

[0019] [Figure 1] This is a perspective view showing the configuration of the reel storage rack. [Figure 2] This is a perspective view showing the configuration of the reel storage compartment. [Figure 3] This is a cross-sectional view of the slot showing the position of the lever when the reel is being removed. [Figure 4] This is a cross-sectional view of the slot showing the position of the lever when the reel is stored. [Figure 5] This is a magnified view of the area near the substrate shown in Figure 4. [Figure 6] This is a cross-sectional view of the slot showing the lever that holds the small diameter reel. [Figure 7] It is a cross-sectional view within a slot showing a lever that holds the medium-diameter reel. [Figure 8] It is a cross-sectional view within a slot showing a lever that holds the large-diameter reel. [Figure 9] It is a cross-sectional view within a slot showing a state where a small-diameter reel is placed on a lever existing at the reel extraction position. [Figure 10] It is a cross-sectional view within a slot showing a state where a lever holding a small-diameter reel is moved to the reel storage position.

Best Mode for Carrying Out the Invention

[0020] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. In this specification and the drawings, components having substantially the same functional configuration are denoted by the same reference numerals, and redundant description is omitted.

[0021] <1. Reel Storage Shelf> First, referring to FIG. 1, the schematic configuration of a reel storage shelf according to an embodiment of the present invention will be described. FIG. 1 is a perspective view showing the configuration of the reel storage shelf 1. In this specification, the left-right direction facing the reel storage shelf 1 in FIG. 1 is referred to as the X-axis direction, the up-down direction is referred to as the Z-axis direction, and the back-front direction is referred to as the Y-axis direction.

[0022] As shown in FIG. 1, the reel storage shelf 1 is configured by connecting a frame 3 made of a rigid material such as stainless steel in the X-axis direction, Y-axis direction, and Z-axis direction. Specifically, the reel storage shelf 1 is configured such that a plurality of rectangular parallelepiped-shaped placement shelves 5 extending in the X-axis direction are arranged in parallel in the Z-axis direction.

[0023] Multiple mounting shelves 5 are provided with reel storage sections 7 having multiple slots 10 for storing reels 20. A reel 20 is, for example, a disc-shaped package in which tape containing multiple electronic components is wound spirally around a bobbin-shaped core. The reels 20 are inserted into each of the slots 10 of the reel storage section 7 from the Y-axis direction so that the disc shape stands in the Z-axis direction perpendicular to the mounting surface, and are then stored in the reel storage shelf 1.

[0024] <2. Reel storage section> Next, the configuration of the reel storage section 7 according to one embodiment of the present invention will be described with reference to Figures 2 to 5. Figure 2 is a perspective view showing the configuration of the reel storage section 7. Figure 3 is a cross-sectional view of the inside of the slot 10 showing the position of the lever 15 in the reel removal position. Figure 4 is a cross-sectional view of the inside of the slot 10 showing the position of the lever 15 in the reel storage position. Figure 5 is an enlarged view of the area A near the substrate 13 in Figure 4.

[0025] As shown in Figure 2, the reel storage section 7 comprises a base plate 11, a pair of side plates 12, a plurality of partition plates 14, and a circuit board 13. The reel storage section 7 corresponds to one example of the reel storage unit according to this embodiment.

[0026] The base plate 11 is made of a rigid material such as stainless steel or organic resin. The components of the reel storage section 7 are placed on top of the base plate 11.

[0027] The pair of side plates 12 and the multiple partition plates 14 are made of a rigid material such as stainless steel or organic resin. The pair of side plates 12 are mounted on both ends of the base plate 11 in the X-axis direction, extending in the Z-axis direction, and are fixed by two axes 110, 111 that extend in the X-axis direction. The multiple partition plates 14 are mounted on the base plate 11 between the pair of side plates 12, extending in the Z-axis direction, and are arranged at equal intervals in the X-axis direction. This forms a slot 10 for housing one reel 20 between each of the multiple partition plates 14.

[0028] The circuit board 13 is, for example, a circuit board that detects when the reel 20 is placed in the slot 10 and controls a notification to inform the user that the reel 20 has been placed in the slot 10. The circuit board 13 may be mounted, for example, on a pair of side plates 12 and a base plate 11 on the rear side in the Y-axis direction of a plurality of partition plates 14. The circuit board 13 is provided with a proximity sensor that detects the proximity of the lever 15, which will be described later, and an LED (Light-Emitting Diode) lamp that emits light based on the detection result of the proximity sensor.

[0029] A light guide unit 16 and a lever 15 are provided in the slot 10 that houses one reel 20.

[0030] The light guide unit 16 is made of a transparent resin or the like that can totally reflect light internally and is provided on the base plate 11. The light guide unit 16 guides the light emitted from the LED lamps provided on the substrate 13 along the Y-axis, allowing the light from the LED lamps on the substrate 13 to be visible to a user facing the reel storage shelf 1.

[0031] The lever 15 has an arc shape, and this arc shape holds the reel 20 along the outer circumference of the disc shape. The lever 15 is mounted on the light guide section 16 so as to be rotatable around an axis 110 that extends in the X-axis direction. By rotating the lever 15 around the axis 110, the reel 20 held by the lever 15 can be moved to the back and front sides in the Y-axis direction. Therefore, by moving the reel 20 to the front side in the Y-axis direction, the lever 15 makes it easier for the user to insert or remove the reel 20. In addition, by moving the reel 20 to the back side in the Y-axis direction, the lever 15 can hold the reel 20 more stably.

[0032] More specifically, as shown in Figures 3 and 4, the lever 15 has a first arc portion 15A extending towards the front in the Y-axis direction and a second arc portion 15B extending towards the back in the Y-axis direction. The lever 15 is mounted on the light guide portion 16 so as to be rotatable with the shaft 110 as the pivot axis. The front side in the Y-axis direction corresponds to the first side into which the reel 20 is fed into the lever 15 in this embodiment, and the back side in the Y-axis direction corresponds to the second side opposite to the first side.

[0033] Furthermore, a stopper 150 is provided on the outer side opposite to the inner side of the arc in which the reel 20 of the lever 15 is held, to stop the rotation of the lever 15. The stopper 150 stops the rotation of the lever 15 by coming into contact with the light guide portion 16 in the reel storage position shown in Figure 4. The light guide portion 16 that the stopper 150 comes into contact with is made of a rigid resin or the like, so that damage or deformation due to contact is prevented.

[0034] When the reel 20 is inserted or removed, the lever 15 rotates counterclockwise around the shaft 110 as the pivot axis, as shown in Figure 3. As a result, the inside of the arcs formed by the first arc portion 15A and the second arc portion 15B, which hold the reel 20, faces towards the front in the Y-axis direction, and the reel 20 held by the first arc portion 15A and the second arc portion 15B is presented to the user.

[0035] On the other hand, when the reel 20 is to be stored, as shown in Figure 4, the lever 15 rotates clockwise around the shaft 110 as the pivot axis until the stopper 150 comes into contact with the light guide portion 16. As a result, the inside of the arcs formed by the first arc portion 15A and the second arc portion 15B faces inward in the Y-axis direction, and the reel 20 held by the first arc portion 15A and the second arc portion 15B is stored.

[0036] As shown in Figure 5, the substrate 13 is provided with a magnetic sensor 131 that detects proximity to the lever 15, and a light-emitting unit 132 that emits light based on the detection result from the magnetic sensor 131.

[0037] The magnetic sensor 131 is an electronic element that detects magnetic fields. The magnetic sensor 131 is positioned opposite the magnet 160 on the lever 15 when the reel is in the retracted position. The magnetic sensor 131 can detect the proximity of the magnet 160 by detecting changes in the magnetic field according to the distance to the magnet 160. As a result, the magnetic sensor 131 can detect that the lever 15 has rotated clockwise around the shaft 110 as its pivot axis and moved to the reel retracted position as an approach to the magnet 160 on the lever 15. The magnetic sensor 131 may be, for example, a Hall element.

[0038] The light-emitting unit 132 includes two LED lamps with different emission colors. The light-emitting unit 132 illuminates the LED lamps with different emission colors in response to the proximity or non-proximity of the lever 15 detected by the magnetic sensor 131. The light emitted from the LED lamps of the light-emitting unit 132 is guided to the front side of the light guide unit 16 in the Y-axis direction by total internal reflection from the back side of the light guide unit 16 in the Y-axis direction. As a result, a user facing the reel storage shelf 1 can determine whether or not a reel 20 is stored in the slot 10 by visually observing the emission color of the LED lamps guided by the light guide unit 16.

[0039] <3. Lever shape> Next, with reference to Figures 6 to 8, the detailed configuration of the lever 15 according to one embodiment of the present invention will be described. Figure 6 is a cross-sectional view of the slot 10 showing the lever 15 that holds the small-diameter reel 20A. Figure 7 is a cross-sectional view of the slot 10 showing the lever 15 that holds the medium-diameter reel 20B. Figure 8 is a cross-sectional view of the slot 10 showing the lever 15 that holds the large-diameter reel 20C. Note that the lever 15 corresponds to one example of the reel holder according to this embodiment.

[0040] As shown in Figures 6 to 8, the lever 15 can hold small diameter reels 20A, medium diameter reels 20B, and large diameter reels 20C with different outer diameters. For example, the outer diameter of the small diameter reel 20A is 10 inches (φ10), the outer diameter of the medium diameter reel 20B is 13 inches (φ13), and the outer diameter of the large diameter reel 20C is 15 inches (φ15).

[0041] As shown in Figure 6, a first small-diameter arc surface 211 is formed at the lowest point of the first arc portion 15A, and a second small-diameter arc surface 212 is formed at the lowest point of the second arc portion 15B. The arcs of the first small-diameter arc surface 211 and the second small-diameter arc surface 212 are formed with the same center as the outer diameter center of the small-diameter reel 20A held by the lever 15, and with the same diameter as the outer diameter of the small-diameter reel 20A. That is, the first small-diameter arc surface 211 and the second small-diameter arc surface 212 are formed with the same center of curvature as the small-diameter reel 20A, and with a radius of curvature of 1 / 2 of the outer diameter of the small-diameter reel 20A. As a result, the lever 15 can hold the small-diameter reel 20A with the two curved surfaces of the first small-diameter arc surface 211 and the second small-diameter arc surface 212.

[0042] The center positions RC of the arcs of the first small-diameter circular arc surface 211 and the second small-diameter circular arc surface 212 are located further in the Y-axis direction than the position LC of the axis 110, which is the pivot axis of the lever 15. In this case, the mass of the small-diameter reel 20A housed in the lever 15 acts as a clockwise moment of the axis 110. Therefore, when the lever 15 is rotated clockwise to the reel storage position while holding the small-diameter reel 20A, it is possible to prevent the lever 15 from being recoiled back to the reel removal position by counterclockwise rotation.

[0043] The second small-diameter arc surface 212 is provided so as to extend further in the Y-axis direction than the intersection point P1 of the rotational trajectory T1 of the center of gravity of the small-diameter reel 20A and the second arc portion 15B when the lever 15 rotates around the axis 110. In other words, the second small-diameter arc surface 212 is provided so that the intersection point P1 of the rotational trajectory T1 of the center of gravity of the small-diameter reel 20A and the second arc portion 15B is located between the starting point S1 (i.e., the front end on the first side) and the ending point E1 (i.e., the rear end on the second side) of the second small-diameter arc surface 212. As a result, when the lever 15 rotates, the second arc portion 15B can receive the center of gravity of the small-diameter reel 20A with the second small-diameter arc surface 212 which is in contact with the small-diameter reel 20A. Therefore, the second arc portion 15B securely holds the small-diameter reel 20A with the first arc portion 15A and the second arc portion 15B, thereby preventing the small-diameter reel 20A from rolling inward in the Y-axis direction.

[0044] As shown in Figure 7, a first medium-diameter arc surface 221 is formed on the first small-diameter arc surface 211 of the first arc portion 15A, and a second medium-diameter arc surface 222 is formed on the second small-diameter arc surface 212 of the second arc portion 15B. The arcs of the first medium-diameter arc surface 221 and the second medium-diameter arc surface 222 are formed with the same center as the outer diameter center of the medium-diameter reel 20B held by the lever 15, and with the same diameter as the outer diameter of the medium-diameter reel 20B. That is, the first medium-diameter arc surface 221 and the second medium-diameter arc surface 222 are formed with the same center of curvature as the medium-diameter reel 20B, and with a radius of curvature of 1 / 2 of the outer diameter of the medium-diameter reel 20B. As a result, the lever 15 can hold the medium-diameter reel 20B with the two curved surfaces of the first medium-diameter arc surface 221 and the second medium-diameter arc surface 222.

[0045] The center position RC of the arcs of the first medium-diameter arc surface 221 and the second medium-diameter arc surface 222 is located further in the Y-axis direction than the position LC of the axis 110, which is the pivot axis of the lever 15. In this case, the mass of the medium-diameter reel 20B housed in the lever 15 acts as a clockwise moment of the axis 110. Therefore, when the lever 15 is rotated clockwise to the reel storage position while holding the medium-diameter reel 20B, it is possible to prevent the lever 15 from being recoiled back to the reel removal position by counterclockwise rotation.

[0046] The second medium-diameter arc surface 222 is provided so as to extend further in the Y-axis direction than the intersection point P2 of the rotational trajectory T2 of the center of gravity of the medium-diameter reel 20B and the second arc portion 15B when the lever 15 rotates around the axis 110. In other words, the second medium-diameter arc surface 222 is provided so that the intersection point P2 of the rotational trajectory T2 of the center of gravity of the medium-diameter reel 20B and the second arc portion 15B is located between the starting point S2 (i.e., the front end on the first side) and the ending point E2 (i.e., the rear end on the second side) of the second medium-diameter arc surface 222. As a result, when the lever 15 rotates, the second arc portion 15B can receive the center of gravity of the medium-diameter reel 20B with the second medium-diameter arc surface 222 which is in contact with the medium-diameter reel 20B. Therefore, the second arc portion 15B securely holds the medium-diameter reel 20B with the first arc portion 15A and the second arc portion 15B, thereby preventing the medium-diameter reel 20B from rolling inward in the Y-axis direction. The starting point S2 of the second medium-diameter arc surface 222 may be the same as the ending point E1 of the second small-diameter arc surface 212.

[0047] As shown in Figure 8, a first large-diameter arc surface 231 is formed on the first medium-diameter arc surface 221 of the first arc portion 15A, and a second large-diameter arc surface 232 is formed on the second medium-diameter arc surface 222 of the second arc portion 15B. The arcs of the first large-diameter arc surface 231 and the second large-diameter arc surface 232 are formed with the same center as the outer diameter center of the large-diameter reel 20C held by the lever 15, and with the same diameter as the outer diameter of the large-diameter reel 20C. That is, the first large-diameter arc surface 231 and the second large-diameter arc surface 232 are formed with the same center of curvature as the large-diameter reel 20C, and with a radius of curvature of 1 / 2 of the outer diameter of the large-diameter reel 20C. As a result, the lever 15 can hold the large-diameter reel 20C with the two curved surfaces of the first large-diameter arc surface 231 and the second large-diameter arc surface 232.

[0048] The center position RC of the arcs of the first large-diameter circular arc surface 231 and the second large-diameter circular arc surface 232 is located further in the Y-axis direction than the position LC of the axis 110, which is the pivot axis of the lever 15. In this case, the mass of the large-diameter reel 20C housed in the lever 15 acts as a clockwise moment of the axis 110. Therefore, when the lever 15 is rotated clockwise to the reel storage position while holding the large-diameter reel 20C, it is possible to prevent the lever 15 from being recoiled back to the reel removal position by counterclockwise rotation.

[0049] The second large-diameter arc surface 232 is provided so as to extend further in the Y-axis direction than the intersection point P3 of the rotational trajectory T3 of the center of gravity of the large-diameter reel 20C and the second arc portion 15B when the lever 15 rotates around the axis 110. In other words, the second large-diameter arc surface 232 is provided so that the intersection point P3 of the rotational trajectory T3 of the center of gravity of the large-diameter reel 20C and the second arc portion 15B is located between the starting point S3 (i.e., the front end on the first side) and the ending point E3 (i.e., the rear end on the second side) of the second large-diameter arc surface 232. As a result, when the lever 15 rotates, the second arc portion 15B can receive the center of gravity of the large-diameter reel 20C with the second large-diameter arc surface 232 which is in contact with the large-diameter reel 20C. Therefore, the second arc portion 15B securely holds the large-diameter reel 20C with the first arc portion 15A and the second arc portion 15B, thereby preventing the large-diameter reel 20C from rolling inward in the Y-axis direction. The starting point S3 of the second large-diameter arc surface 232 may be the same as the ending point E2 of the second medium-diameter arc surface 222.

[0050] Furthermore, the centers of the arcs of the first small-diameter arc surface 211 and the second small-diameter arc surface 212, the centers of the arcs of the first medium-diameter arc surface 221 and the second medium-diameter arc surface 222, and the centers of the arcs of the first large-diameter arc surface 231 and the second large-diameter arc surface 232 may be located at the same position in the Y-axis direction. In this case, the Y-axis position of the centers of gravity of the small-diameter reel 20A, medium-diameter reel 20B, and large-diameter reel 20C held by the lever 15 can be made the same. Therefore, the stability of the reel storage section 7 can be further enhanced when storing small-diameter reels 20A, medium-diameter reels 20B, and large-diameter reels 20C with different outer diameters.

[0051] As described above, the lever 15 according to this embodiment has a plurality of arcuate surfaces (a first small-diameter arcuate surface 211, a first medium-diameter arcuate surface 221, and a first large-diameter arcuate surface 231, or a second small-diameter arcuate surface 212, a second medium-diameter arcuate surface 222, and a second large-diameter arcuate surface 232) on the reel 20 holding side of at least one of the first arcuate portion 15A or the second arcuate portion 15B, with the curvature increasing sequentially in the direction of extension of the first arcuate portion 15A or the second arcuate portion 15B. With this configuration, the lever 15 can reliably hold a plurality of reels 20 with different outer diameters (a small-diameter reel 20A, a medium-diameter reel 20B, and a large-diameter reel 20C) with their respective curved surfaces.

[0052] <4. Reel storage process> Furthermore, with reference to Figures 9 and 10, the operation of the lever 15 when the reel 20 is stored in the lever 15 will be described. Figure 9 is a cross-sectional view of the inside of the slot 10 showing the small-diameter reel 20A being placed on the lever 15 in the reel removal position. Figure 10 is a cross-sectional view of the inside of the slot 10 showing the lever 15 holding the small-diameter reel 20A being moved to the reel storage position.

[0053] Figures 9 and 10 illustrate, as an example, the operation of lever 15 when a small-diameter reel 20A is stored in lever 15. However, the operation of lever 15 is similar when a medium-diameter reel 20B and a large-diameter reel 20C are stored in lever 15.

[0054] As shown in Figure 9, when the lever 15 is in a reel dispensing position tilted towards the front in the Y-axis direction, the user can place the small-diameter reel 20A on the first arc portion 15A and the second arc portion 15B of the lever 15. At this time, since the diameters of the arcs of the first small-diameter arc surface 211 and the second small-diameter arc surface 212 that hold the small-diameter reel 20A are the same as the outer diameter of the small-diameter reel 20A, the lever 15 can hold the small-diameter reel 20A without any gaps between the two curved surfaces.

[0055] Subsequently, the user lifts the front side of the lever 15 in the Y-axis direction, causing the lever 15 to rotate to the reel storage position. As a result, as shown in Figure 10, the bottom surface of the stopper 150 of the lever 15 comes into contact with the light guide portion 16, stopping the rotation of the lever 15.

[0056] At this time, a force due to the mass of the small-diameter reel 20A acts on the intersection point P1 of the rotational trajectory T1 of the center of gravity of the small-diameter reel 20A and the second arc portion 15B. In the lever 15 according to this embodiment, the second small-diameter arc surface 212 is provided to extend further in the Y-axis direction than the intersection point P1 of the rotational trajectory T1 of the center of gravity of the small-diameter reel 20A and the second arc portion 15B. Therefore, the lever 15 can receive the force due to the mass of the small-diameter reel 20A at the second small-diameter arc surface 212, thereby preventing the small-diameter reel 20A from rolling in the Y-axis direction.

[0057] Furthermore, in the reel storage position, the center of gravity of the small-diameter reel 20A (i.e., the center position RC of the arcs of the first small-diameter circular arc surface 211 and the second small-diameter circular arc surface 212) is located further in the Y-axis direction than the position LC of the axis 110, which is the pivot axis of the lever 15. As a result, the moment from the center of gravity of the small-diameter reel 20A acts clockwise with respect to the axis 110, preventing the lever 15 from rotating counterclockwise with respect to the axis 110 toward the reel removal position.

[0058] When the lever 15 is rotated to the reel storage position, the magnetic sensor 131 detects the approach of the magnet 160 provided on the lever 15, thereby detecting that the lever 15 has been rotated to the reel storage position. As a result, the light-emitting unit 132 illuminates, for example, an LED lamp of a predetermined color. The light emitted from the LED lamp of the predetermined color passes through the inside of the light guide unit 16 and is guided to the front side of the light guide unit 16 in the Y-axis direction, making it visible to a user facing the reel storage shelf 1. In this way, the light-emitting unit 132 can make the user aware that the small-diameter reel 20A has been stored in the lever 15.

[0059] As described above, the lever 15 according to this embodiment is equipped with multiple arcuate surfaces on the inside that hold the reels 20, each with a curvature corresponding to the reels 20 of different outer diameters, thereby enabling it to hold reels 20 of different outer diameters. Therefore, the reel storage section 7 according to this embodiment can hold a mix of reels 20 of different outer diameters, thereby increasing the versatility of the reel storage shelf 1.

[0060] Although preferred embodiments of the present invention have been described in detail above with reference to the attached drawings, the present invention is not limited to these examples. It is clear to any person with ordinary skill in the art to which the present invention belongs that various modifications or alterations can be conceived within the scope of the technical idea described in the claims, and these are also understood to fall within the technical scope of the present invention. [Explanation of symbols]

[0061] 1 Reel storage shelf 7. Reel storage compartment 10 slots 13 circuit boards 15 Lever 15A First arc section 15B Second arc section 16 Light guide section 20 reels 20A Small Diameter Reel 20B Medium Diameter Reel 20C Large Diameter Reel 110 axis 131 Magnetic Sensor 132 Light-emitting part 150 Stopper 160 magnets 211 First small-diameter arc surface 212 Second small-diameter arc surface 221 First medium-radius arc surface 222 Second medium-radius arc surface 231 First large-diameter circular arc surface 232 Second large-diameter arc surface

Claims

1. The device includes an arc-shaped lever that holds the disc-shaped reel along the outer circumference of the disc shape, The lever has a first arc portion and a second arc portion that extend in opposite directions in the circumferential direction of the disc shape, A reel holder in which, on the reel-holding side of at least one of the first or second arc portion, a plurality of arc surfaces with different curvatures are provided such that the curvature increases sequentially in the extending direction of the first or second arc portion.

2. The reel holder according to claim 1, wherein the plurality of arcuate surfaces are provided on the reel holding side of both the first arcuate portion and the second arcuate portion.

3. The reel holder according to claim 2, wherein each of the plurality of arcuate surfaces is provided with the same radius of curvature and center of curvature across both the first and second arcuate portions.

4. The reel holder according to claim 3, wherein each of the plurality of arcuate surfaces holds the reels, each having a disc shape with a different radius from the others.

5. The reel holder according to any one of claims 1 to 4, wherein the first arc portion extends toward the first side toward which the reel is fed into the lever, and the second arc portion extends toward the second side opposite to the first side.

6. The reel holder according to claim 5, wherein when the reel is inserted into the lever, the lever rotates with an axis perpendicular to the extending direction of the first and second arc portions as its pivot axis.

7. The reel holder according to claim 6, wherein the second rear end of each of the plurality of arcuate surfaces provided on the second arcuate portion is located on the second side of the intersection point between the trajectory of the rotation of the center of gravity of the reel loaded into the lever and the second arcuate portion.

8. The reel holder according to claim 6, wherein the lever rotates until the center of gravity of the reel inserted into the lever is on the second side of the pivot axis of the lever.

9. The reel holder according to claim 8, wherein a stopper is provided on the side of the second arc portion opposite to the reel holding side for stopping the rotation of the lever.

10. The reel holder includes an arc-shaped lever that holds a disc-shaped reel along the outer circumference of the disc shape, The lever has a first arc portion and a second arc portion that extend in opposite directions in the circumferential direction of the disc shape, A reel storage unit in which a plurality of arcuate surfaces with different curvatures are provided on the reel holding side of at least one of the first arcuate portion or the second arcuate portion, such that the curvature increases sequentially in the extending direction of the first arcuate portion or the second arcuate portion.

11. A light-emitting unit that emits light when the reel is held by the lever, A light guide is provided below the lever on the side opposite to the reel holding side, and guides the light emitted from the light-emitting part, The reel storage unit according to claim 10, further comprising the above.

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