JP2010143596A - Gear storing tray, and storing body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gear storing tray which can be consistently used during the storage, conveyance and assembly, and capable of easily and rapidly storing a gear in the predetermined direction while suppressing any play, preventing deposition of foreign matter, deformation or damage in advance, and considerably enhancing the picking-up workability. <P>SOLUTION: The tray 1 for storing a gear having a disk-shaped gear body and a shaft part provided at a center of the gear body includes a plate-like tray body 2, and a storage hole part 3a which is opened at least in an upper surface 4 side of the tray body, and formed in the tray body so that the inner diameter W2 of an opening end 3a on the upper surface side is larger than the diameter W1 of the gear body, and stores the gear so that the shaft part of the gear is stored along the vertical direction D1 of the tray body. A tapered surface 8 which is contracted toward a lower surface 7 side from the upper surface side and has a tapered surface with the inner diameter W3 at its lower end being smaller than the diameter of the gear body, at least at a part of an inner circumferential surface 6 for defining the storage hole part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

   The present invention relates to a gear storage tray for storing a gear, which is one of small precision parts constituting a timepiece, and a storage body including the same.

An analog timepiece represented by a mechanical timepiece is configured by countless combinations of extremely small and precise gears and the like. In particular, since the gear is an important part for transmitting power, it is necessary to handle it with care so as not to be deformed or scratched when the timepiece is assembled.
By the way, when assembling a timepiece, various parts such as gears are manufactured for each part and then conveyed to an assembly line (including transportation and transportation). Therefore, it is necessary to convey the gear which is one of the parts from the production place to the assembly line.

Here, as a method for handling the gear, the following method has been conventionally employed.
The first method is a method in which the manufactured gears are collected in a certain quantity and put into a plastic box or plastic bag and then transported.
The second method is a method in which a certain number of manufactured gears are put together in a plastic bag inflated with air and then transported.
As a third method, a tray in which a plurality of depressions are formed is prepared, one gear is stored in each depression, and then the whole tray is conveyed.
As a fourth method, a plurality of plastic bags inflated with air are prepared, and after one gear is put in each plastic bag, it is transported.

  Note that these handling methods are methods that are actually performed by an operator while devising based on experience. Therefore, publicly known documents in which such methods are described have not been found at the present time and cannot be disclosed.

However, the following problems still remain in the gear handling method described above.
First, in the case of the first method, since a certain amount is handled collectively, there is a problem that the gears collide with each other or are entangled during conveyance, and are easily deformed or scratched. Moreover, when subjected to external impacts, deformation and scratches were easily made.

  In the case of the second method, since it is put in a plastic bag inflated with air, it is strong against impact from the outside, but the gears put in the same plastic bag collide or get entangled during transportation. Resulting in. For this reason, it is still easy to be deformed and scratched. In addition, it is necessary to take the trouble of taking out the gear from the plastic bag and temporarily transferring it to another tray or container after transportation.

In the case of the third method, since the gears can be transported in a state where one gear is housed in each recess, there is no fear of the gears colliding with each other or being entangled with each other. However, the gears are likely to be violated in the depression due to shaking or the like during conveyance, which may cause deformation or scratches. In addition, there is a possibility that the surface of the tray is scraped (rubbed) and adheres to the gears when it goes wild. Therefore, there is a possibility of causing quality deterioration due to adhesion of foreign matter.
In addition, the posture of the gear in the recess is unknown (the posture is disjointed), so it takes time and effort to pick up the gear after picking up and take it out of the recess. I could not. In addition, the gears are usually lubricated before assembly, but the gears have different postures in the recesses, so the lubrication operation cannot be performed efficiently.

  In the case of the fourth method, since gears are put one by one in a plastic bag inflated with air, not only are they resistant to external impacts, but there is no collision or entanglement between gears. Therefore, it is a preferable method because it is difficult to be deformed or scratched. However, since it is necessary to put the gears one by one in a plastic bag, the work spent on the packaging is inevitably taken, and the workability is poor. In addition to packaging, it also takes time to remove from the plastic bag after transport, and also requires time to temporarily transfer to another tray or container.

The present invention has been made in consideration of such circumstances, and its purpose can be used consistently from the time of storage, transport and assembly, and the gears are determined easily and quickly while suppressing rattling. It is possible to provide a gear storage tray that can be stored in a facing direction, prevent foreign matter from being attached, deformed, and scratched, and can further improve the picking up workability. .
Another object is to provide a storage body including the gear storage tray.

In order to solve the above problems, the present invention proposes the following means.
The gear storage tray according to the present invention has a disc-shaped gear main body and a shaft portion provided at the center of the gear main body, and stores a gear whose center of gravity is on the shaft portion separated from the gear main body. A gear storage tray that opens to at least the upper surface side of the flat tray body and the tray body, and the inner diameter of the opening end on the upper surface side is larger than the diameter of the gear body. A storage hole formed in the tray main body and storing the gear in a state in which a shaft portion of the gear is along the vertical direction of the tray main body, and at least an inner peripheral surface defining the storage hole A part thereof is characterized in that a tapered surface is formed which is reduced in diameter from the upper surface side toward the lower surface side and whose inner diameter at the lower end is smaller than the diameter of the gear body.

When storing gears in the gear storage tray according to the present invention, first, the gear storage tray is placed on a substantially horizontal base or the like with the upper surface facing upward, The vertical direction is substantially matched.
Next, the gear to be accommodated is gripped, and the gear is inserted into the accommodation hole from the opening end on the upper surface side of the accommodation hole. At this time, the gear is inserted into the housing hole from the end of the shaft portion where the center of gravity is located (hereinafter referred to as one side). Then, by releasing the grip, the gear enters the storage hole toward the lower surface side. At this time, since the gear is inserted from the end portion on one side of the shaft portion where the center of gravity is located, the end portion on one side of the shaft portion and the outer peripheral edge portion of the gear body define the housing hole portion. By contacting the peripheral surface, the posture is corrected so that the extending direction of the shaft portion matches the vertical direction, that is, the vertical direction of the tray body. Then, the gear enters the storage hole so that one end of the shaft portion faces vertically downward, that is, the lower surface.

Here, a part of the inner peripheral surface that defines the storage hole portion is formed with a tapered surface that is reduced in diameter from the upper surface side toward the lower surface side, and that the inner diameter of the lower end is smaller than the diameter of the gear body. Yes. For this reason, when the gear body enters the portion where the inner diameter is equal to the diameter of the gear body in the taper surface in the process of entering the inside of the housing hole toward the lower surface side, the outer surface of the gear body enters the taper surface. The lower end of the peripheral edge abuts and is supported, and movement toward the lower surface side is restricted. At this time, since the movement of the gear is restricted in a state where the center of gravity is located on the lower surface side with respect to the gear main body, the posture is stabilized and rattling is suppressed. As a result, the gear can be stored in the storage hole with the other side opposite to the one side facing the gear body facing the upper surface.
As described above, according to the gear storage tray, it is possible to store the gears in a fixed direction quickly and easily with a simple operation of simply inserting the gears into the storage holes.

Further, when the gears are transported in the gear storage tray, the gears are stored while suppressing rattling as described above. This makes it possible to prevent damage to the gears, deformation of the gears, and adhesion of foreign matters due to rubbing of the surface of the tray body.
Also, when assembling with this gear after transporting the gears in this gear storage tray, the gears are stored in a fixed direction while suppressing rattling as described above. Even so, the gear can be stored in the storage hole with the other side facing the upper surface, and the workability of picking up the gear can be significantly improved. In addition, when performing the lubrication operation | work to the part located in the other side in a gearwheel, it becomes possible to perform this lubrication operation | work in the state which accommodated the gearwheel in the accommodation hole part, and workability | operativity can be improved further.
As described above, according to the gear storage tray, it is not necessary to perform the take-out operation until storage, transport, and assembly, and can be used consistently.

  The inner peripheral surface that defines the storage hole may be formed with a regulation surface that is continuous with the lower end of the tapered surface and that has the same inner diameter regardless of the inner diameter of the lower end and the vertical direction.

  In this case, when the gear is stored in the storage hole, the end of the one side of the shaft portion is inserted into the space defined by the restriction surface, so that the gear is rattled in the storage hole. Even so, the shank of the gear can be more reliably suppressed by the shaft portion coming into contact with the regulating surface.

  Further, the storage hole may be formed in a bottomed shape.

  In this case, since the storage hole is formed in a bottomed shape, it is possible to prevent foreign matter from entering from the lower surface side of the tray body, and more reliably prevent foreign matter from adhering to the gear. Can do.

  In addition, the storage hole has a size along the vertical direction from the position where the inner diameter matches the diameter of the gear body on the tapered surface to the bottom surface, and extends in the direction in which the center of gravity is located at the shaft of the gear. You may form so that it may become larger than the length of this shaft part which exists.

  In this case, the size along the vertical direction from the position where the inner diameter matches the diameter of the gear body to the bottom surface on the tapered surface is the direction in which the center of gravity is located in the shaft portion of the gear, that is, the shaft portion extending to one side. Since it is larger than the length, when the gear is stored in the storage hole, the end on one side of the shaft portion of the gear does not contact the bottom surface of the storage hole. Accordingly, it is possible to more reliably prevent the gear from being deformed and the gear from being damaged.

  A shaft escape recess having an inner diameter smaller than the diameter of the gear body is formed at a position corresponding to the storage hole on the lower surface of the tray body, and the gear storage trays are arranged in a predetermined direction. There may be provided a positioning mechanism for positioning both trays so that the shaft escape recess of the upper tray faces the storage hole of the lower tray when overlapping.

In this case, by superimposing the gear storage trays, it is possible to prevent the gears from popping out from the storage hole toward the upper surface side even when receiving an impact from the outside during transport or the like. it can. In addition, by superimposing the gear storage trays, it is possible to increase the number of gear storage trays transported at a time when the gears are transported, and to improve the gear transport efficiency.
In addition, when the gear storage trays are overlapped with each other, both trays can be positioned by the positioning mechanism such that the shaft escape recess of the upper tray is disposed opposite to the storage hole of the lower tray. . Therefore, when the gear is stored in the storage hole, even if the shaft portion of the gear protrudes from the upper surface of the tray body, the shaft portion can be stored in the shaft escape recess of the upper tray. Thus, the shaft portion can be prevented from contacting the lower surface of the upper tray. Therefore, it is possible to reliably prevent the gear from being deformed and the gear from being damaged.

  The positioning mechanism includes a positioning convex portion projecting upward from an outer peripheral edge portion of the upper surface of the tray body, and an opening facing downward from an outer peripheral edge portion of the lower surface of the tray body. A positioning groove that is engaged with the convex portion may be provided.

In this case, when positioning is performed by the positioning mechanism, the positioning convex portion and the positioning concave groove are merely engaged, so that the positioning operation can be easily performed.
In addition, since the positioning convex part is formed on the upper surface, not the lower surface of the tray body, when the gear storage tray is mounted on a pedestal or the like with the lower surface facing down, this mounting is hindered due to the positioning mechanism. It will not be done.
Further, since both the positioning convex portion and the positioning concave groove are provided on the outer peripheral edge portion of the tray main body, the layout property of the storage hole portion in the tray main body can be improved. For example, when a plurality of storage holes are formed, it is possible to lay out so as to increase the number of storage holes as much as possible.

  Further, when the lower surface of the upper tray and the upper surface of the lower tray are to be overlapped in a direction different from a predetermined direction, the lower surface of the upper tray and the upper surface of the lower tray You may provide the mispositioning prevention mechanism which prevents a contact.

  In this case, when the mispositioning prevention mechanism tries to overlap the lower surface of the upper tray and the upper surface of the lower tray in a direction different from the predetermined direction, the lower surface of the upper tray and the lower tray Contact with the upper surface can be prevented. Therefore, when the gear is stored in the storage hole, even if the gear shaft protrudes from the upper surface of the tray body, the positioning direction of the upper tray and the lower tray is mistakenly overlapped. When trying to do so, it is possible to prevent the shaft portion from coming into contact with the lower surface of the upper tray. Therefore, it is possible to reliably prevent the gear from being deformed and the gear from being damaged.

  The tray main body may be formed with a mark for recognizing the direction in which the tray is overlapped.

  In this case, since the direction recognition mark is formed on the tray body, both trays are surely determined in advance without making a mistake in the orientation when the gear storage trays are overlapped with each other manually or with a machine such as a robot. Can be overlapped in the direction. Therefore, the overlaying operation can be performed more efficiently. In addition, when performing a superposition operation with a machine such as a robot, since the mark can be programmed as an index, control becomes very easy.

  In addition, a plurality of the storage holes may be provided.

  In this case, since a plurality of storage holes are provided, a plurality of gears can be stored and transported at a time. In addition, unlike a case where a certain amount is handled collectively, the gears do not collide with each other or are entangled during conveyance, so that it is possible to reliably prevent the gears from being deformed and the gears from being damaged.

  Further, the storage body according to the present invention includes the gear storage tray according to the present invention, a disc-shaped gear body, and a shaft portion provided at the center of the gear body, and the center of gravity is from the gear body. And a gear housed in the housing hole portion of the gear housing tray, the shaft being on the spaced apart shaft portion.

  According to the storage body of the present invention, it can be used consistently until conveyance and assembly, and it prevents the adhesion of foreign matter to the gear, deformation of the gear and damage to the gear, Workability to pick up can be remarkably improved.

According to the storage tray for gears according to the present invention, it can be used consistently until storing, transporting, assembling, and the gear can be stored in a fixed direction easily and quickly while suppressing rattling, It is possible to prevent foreign matter from being attached, deformed or scratched, and to further improve the picking workability.
In addition, according to the container according to the present invention, it can be used consistently until the time of transportation and assembly, and prevents foreign matter from adhering to the gear, deformation of the gear and scratching of the gear. The workability of picking up the gear can be remarkably improved.

Hereinafter, an embodiment of a gear storage tray according to the present invention will be described with reference to FIGS. FIG. 1 is a configuration diagram of an embodiment of a gear storage tray according to the present invention. Fig.2 (a) is a side view which shows the gear accommodated in the storage tray for gears shown in FIG. FIG. 2B is a plan view showing gears stored in the gear storage tray shown in FIG.
As shown in FIG. 1, the gear storage tray 1 of the present embodiment includes a disc-shaped gear body C1 and a shaft portion C2 provided at the center of the gear body C1, and the center of gravity is from the gear body C1. The gear C which exists on the axial part C2 which spaced apart is accommodated. When the gear C is stored in the gear storage tray 1, a storage package (storage body) P is obtained.

  Here, the gear C will be briefly described. In the present embodiment, as shown in FIGS. 2A and 2B, the gear C includes the gear body C1 and the shaft portion that extends through the gear body C1 in the thickness direction. C2 and a heart cam C3 connected to a shaft portion C2 located on one side with respect to the gear body C1 along the extending direction of the shaft portion C2, for example, a gear used for a mechanical chronograph, etc. It is adopted. In this gear C, the total length of the shaft portion C2 is as extremely small as 10 mm, for example, and a spring (not shown) or the like is accommodated in the gear C, and careful handling is required.

  In the following, as shown in FIG. 2A, the side where the heart cam C3 is positioned with respect to the gear body C1 along the extending direction of the shaft portion C2 (the one side) is referred to as the gear upper side, and the shaft portion C2 The opposite side across the gear body C1 along the extending direction is referred to as the gear lower side. Further, the length (projection amount) of the shaft portion C2 from the gear body C1 to the lower side of the gear is L1, the length (projection amount) of the shaft portion C2 from the gear body C1 to the upper side of the gear is L2, and the shaft portion C2. The size (thickness) of the gear main body C1 along the extending direction of L3 is L3, and the size along the extending direction of the shaft portion C2 from the gear upper surface of the gear main body C1 to the gear upper surface of the heart cam C3. Let L4.

Further, the center of gravity of the gear C is assumed to be on a shaft portion C2 spaced from the gear body C1 to the gear lower side, and the shaft portion C2 has a relationship between the length L1 and the length L2 such that L1> L2. Shall. Further, as shown in FIG. 2A, the diameter of the gear body C1 is W1.
The gear C shown in the present embodiment is an example, and the gears stored in the gear storage tray 1 are not limited to those described above, and have a gear main body and a shaft portion, and the center of gravity is from the gear main body. What is necessary is just to be on the shaft part which was separated.

As shown in FIG. 1, the gear storage tray 1 is formed in a flat tray main body 2 and a tray main body 2, and the gear C has a shaft portion C <b> 2 of the gear C along the vertical direction D <b> 1 of the tray main body 2. And a storage hole portion 3 for storing in a state of being in a closed state.
The tray body 2 is formed of, for example, a synthetic resin such as so-called plastic and has a smooth surface. In the illustrated example, the four corners 5e in the outer peripheral edge 5 are chamfered (R-processed). It is formed in a square shape in plan view. Note that the material of the tray body 2 is not limited to that described above.

  The storage hole 3 is formed so as to open to at least the upper surface 4 side of the tray body 2 and the inner diameter W2 of the opening end 3a (see FIG. 4) on the upper surface 4 side is larger than the diameter W1 of the gear body C1. ing. Further, as shown in FIG. 1, in the illustrated example, a plurality (100) of storage holes 3 are formed in the tray body 2, that is, a plurality of (100) gears are included in the gear storage tray 1. C can be stored.

  The 100 storage holes 3 are arranged in a zigzag shape in plan view. In the illustrated example, a row of ten storage holes 3 aligned in the vertical direction D2 along the extending direction in which a predetermined one side of the outer peripheral edge of the tray body 2 extends in plan view is the vertical direction D2. Ten rows are arranged adjacent to each other in the transverse direction D3 orthogonal to each other at equal intervals. Further, the rows of the storage hole portions 3 are arranged such that adjacent rows are alternately shifted at equal intervals on one side and the other side in the longitudinal direction D2. Thereby, the 100 accommodation hole parts 3 have comprised the zigzag shape in planar view.

  By arranging as described above, the arrangement of the storage hole portions 3 in the tray body 2 is not line symmetric in plan view and point symmetric in plan view. Further, in the example shown in the drawing, the storage hole 3 has a predetermined distance B1 from each side of the outer peripheral edge of the upper surface 4 of the tray body 2 in plan view so as to avoid the outer peripheral edge 5 of the tray body 2. 2 is formed in the upper surface central region R1 having a rectangular shape in a plan view and separated from the inside. In the illustrated example, the ratio of the length of one side of the outer periphery of the tray body 2 to the distance B1 is, for example, 21: 1.

3 is a cross-sectional view taken along the line AA in FIG. 4 is a partially enlarged view of the cross-sectional view shown in FIG.
As shown in FIGS. 3 and 4, at least a part of the inner peripheral surface 6 defining the storage hole 3 is reduced in diameter from the upper surface 4 side toward the lower surface 7 side, and the inner diameter W3 at the lower end. A tapered surface 8 is formed which is smaller than the diameter W1 of the gear body C1. In the present embodiment, the inner circumferential surface 6 that defines the storage hole 3 is connected to the lower end of the tapered surface 8 and has a regulation surface having the same inner diameter regardless of the inner diameter W3 of the lower end and the vertical direction D1. 9 is formed. Furthermore, in this embodiment, the storage hole 3 is formed in a bottomed shape.

As shown in FIG. 4, in the illustrated example, the tapered surface 8 is formed to be continuous with the upper surface 4 of the tray body 2, that is, the inner diameter of the upper end of the tapered surface 8 is W <b> 2. Further, the taper surface 8 is gradually reduced in diameter from the upper surface 4 side toward the lower surface 7 side, and the longitudinal sectional view shape is an inclined plane. Thereby, in this inclined plane, the inner diameter of the intermediate portion 8a in the up-down direction D1 is equal to the diameter W1 of the gear body C1.
In the illustrated example, the bottom surface 10 of the storage hole 3 is formed as a flat surface orthogonal to the vertical direction D <b> 1, and its outer peripheral edge is connected to the lower end of the regulating surface 9.

Further, in the illustrated example, a truncated cone-shaped space S1 that is a space located in the range from the upper end to the lower end of the tapered surface 8 in the vertical direction D1 in the vertical direction D1 and the vertical direction D1 in the vertical direction D1. In the cylindrical space S2, which is a space located in the range from the upper end to the lower end of the restriction surface 9, the central axis along the vertical direction D1 in each of the spaces S1 and S2 is a common axis.
In the illustrated example, the ratio of the inner diameter W2 to the inner diameter W3 described above is, for example, W2: W3 = 6: 1. The ratio of the size along the vertical direction D1 from the upper end to the lower end of the tapered surface 8 and the size along the vertical direction D1 from the upper end to the lower end of the regulating surface 9 is, for example, 3: 1. Yes.

  Further, as shown in FIGS. 2 and 4, in the present embodiment, the storage hole 3 has a size L <b> 5 along the vertical direction D <b> 1 from the intermediate portion 8 a to the bottom surface 10 of the tapered surface 8. The shaft portion C2 is formed so as to be longer than the length L1 on the lower side of the gear. Further, in the illustrated example, the storage hole 3 has a size L6 along the vertical direction D1 from the intermediate portion 8a of the tapered surface 8 to the lower end of the tapered surface 8, so It is formed to be smaller than the side length L1 (that is, L6 <L1 <L5).

  In the illustrated example, the storage hole 3 has a size L7 along the vertical direction D1 from the intermediate portion 8a of the tapered surface 8 to the opening end 3a on the upper surface 4 side, and the thickness L3 of the gear body C1. And the size L4 from the gear upper surface of the gear body C1 to the gear upper surface of the heart cam C3. Further, the storage hole 3 is formed so that the size L7 is smaller than the size obtained by adding the length L2 above the gear in the shaft C2 of the gear C and the thickness L3 of the gear body C1. (Ie L3 + L4 <L7 <L2 + L3).

FIG. 5 is a plan view of the gear storage tray shown in FIG. 1 as viewed from the lower surface side.
As shown in FIGS. 3 to 5, in this embodiment, the shaft escape recess 11 having an inner diameter W4 smaller than the diameter W1 of the gear body C1 is located at a position corresponding to the storage hole 3 on the lower surface 7 of the tray body 2. Is formed. As shown in FIG. 4, in the illustrated example, the shaft escape recess 11 is formed in a portion of the lower surface 7 of the tray main body 2 positioned below the storage hole 3.

  As shown in FIGS. 4 and 5, in the illustrated example, the shaft escape recess 11 is formed so that the internal space S3 is cylindrical. Further, as shown in FIG. 4, in the shaft escape recess 11, the central axis along the vertical direction D <b> 1 in the space S <b> 3 is coaxial with the common axis of the spaces S <b> 1 and S <b> 2 in the storage hole 3. It is formed as follows. The size (depth) along the vertical direction D1 of the recess 11 for shaft escape is L8 (however, L8> L2 + L3-L7).

  The shaft escape recesses 11 formed as described above are arranged in a zigzag shape in a plan view on the lower surface 7 of the tray body 2 as shown in FIG. The recessed portion 11 for escaping the shaft is formed by a predetermined distance B1 from a region corresponding to the upper surface central region R1 on the lower surface 7 of the tray main body 2, that is, each side of the outer peripheral edge of the lower surface 7 of the tray main body 2 in plan view. Is formed in a lower surface central region R2 having a rectangular shape in plan view and separated from the inside.

  Further, as shown in FIG. 5, in the illustrated example, a plurality of lightening portions 12 are formed on the lower surface 7 of the tray body 2. The thinned portion 12 is formed in a gap region formed between the shaft escape recesses 11 in the lower surface central region R2 by arranging the shaft escape recesses 11 in a staggered manner in the lower surface central region R2. Yes. As shown in FIGS. 3 and 5, in the illustrated example, each thinned portion 12 is a groove having a slot shape in plan view, and a plurality (100) of the thinned portions 12 are staggered in plan view. It is arranged to be. By providing the lightening portion 12, the material used for the gear storage tray 1 can be reduced, and the cost of the gear storage tray 1 can be reduced.

6 is an arrow B view shown in FIG. FIG. 7 is an arrow C view shown in FIG. FIG. 8 is an arrow D view shown in FIG.
As shown in FIGS. 6 to 8, in this embodiment, the gear storage tray 1 is configured such that when the gear storage trays 1 are overlapped with each other in a predetermined direction to be described later, the shaft clearance of the upper tray 1 is set. A positioning mechanism 13 for positioning both trays 1 and 1 is provided so that the concave portion 11 for use is disposed so as to face the storage hole 3 of the lower tray 1.

Furthermore, in the present embodiment, the positioning mechanism 13 is provided on the outer peripheral edge 5 on the upper surface 4 of the tray body 2 and on the outer peripheral edge 5 on the lower surface 7 of the tray main body 2. And a positioning groove 15 which is opened toward the side and engaged with the positioning protrusion 14.
As shown in FIGS. 1 and 5 to 8, in the illustrated example, the positioning convex portion 14 and the positioning concave groove 15 are four side portions 5 a, 5 b, 5 c, 5 d that are the outer peripheral edge portions 5 in the tray body 2. Are formed respectively. In the present embodiment, the outer peripheral edge portion 5 includes the side portions 5a, 5b, 5c, and 5d and the four corner portions 5e.

  As shown in FIG. 1, two positioning convex portions 14 are formed on each of the side portions 5a, 5b, 5c, and 5d, and all the positioning convex portions 14 have the same shape and the same size. The positioning convex portion 14 extends along the extending direction of the side portions 5a, 5b, 5c, and 5d where the positioning convex portion 14 is formed, and both end portions in the extending direction are chamfered (R processed). Is formed.

  The length of the positioning convex portion 14 along the extending direction is substantially equal to the inner diameter W2 of the opening end portion 3a on the upper surface 4 side of the storage hole portion 3, and is orthogonal to the extending direction. The width, which is the size along the direction to be, is B2 (B2 <B1). Further, as shown in FIG. 6, the protruding height of the positioning convex portion 14 (the size along the vertical direction D1 from the upper surface 4 to the upper end of the tray body 2) is B3.

  As shown in FIGS. 6 to 8, the two positioning convex portions 14 in the side portions 5a, 5b, 5c, and 5d are separated from the middle point in the extending direction in the side portions 5a, 5b, 5c, and 5d. They are spaced apart from each other in the extending direction across the midpoint so that the distances are equal. In the illustrated example, the distance between the two positioning convex portions 14 formed on the side portions 5a and 5b along the vertical direction D2 is respectively set on the side portions 5c and 5d along the horizontal direction D3. It is wider than the distance between the two positioning projections 14 formed.

  Further, as shown in FIGS. 5 and 6, one positioning groove 15 is formed in each of the side portions 5a, 5b, 5c, and 5d, and all the positioning grooves 15 have the same shape and the same size. ing. The positioning groove 15 is formed in the shape of a long hole in a plan view extending along the extending direction of the sides 5a, 5b, 5c, and 5d in which the positioning groove 15 is formed. Further, the positioning groove 15 opens toward the side of the tray body 2.

  Further, as shown in FIG. 5, the width of the positioning groove 15 in the direction perpendicular to the extending direction is B4 (where B4 <B1), which is slightly larger than the width B2 of the positioning convex portion 14. As shown in FIG. 6, the depth of the positioning groove 15 (size along the vertical direction D1 from the lower surface 7 to the upper end surface of the tray body 2) is B5 (B5> B3). It has become. The width B2 of the positioning convex portion 14 and the width B4 of the positioning concave groove 15 may be equal.

  Moreover, the length which is the magnitude | size along the extension direction in the positioning ditch | groove 15 is the said vertical direction in each of the two positioning convex parts 14 currently formed in the edge parts 5a and 5b along the said vertical direction D2. It is larger than the interval between the outer edges of D2. Further, the positioning groove 15 is formed such that the midpoint of the extending direction coincides with the midpoint of the extending portions 5a, 5b, 5c, and 5d.

  As described above, in the present embodiment, since both the positioning convex portion 14 and the positioning concave groove 15 are provided in the outer peripheral edge portion 5 of the tray body 2, the layout property of the storage hole portion 3 in the tray body 2. Can be improved. That is, as described above, it is possible to lay out the upper surface central region R1 that occupies most of the upper surface 4 of the tray body 2 so as to increase the number of storage holes 3 as much as possible.

In the present embodiment, when the gear storage trays 1 are stacked, the lower surface 7 of the upper tray 1 and the upper surface 4 of the lower tray 1 are stacked in a direction different from a predetermined direction described later. In this case, an erroneous positioning preventing mechanism 16 for preventing contact between the lower surface 7 of the upper tray 1 and the upper surface 4 of the lower tray 1 is provided.
In the illustrated example, the erroneous positioning preventing mechanism 16 includes, as shown in FIGS. 7 and 8, the first protrusion 17 formed in the positioning groove 15 in the one side portion 5a along the longitudinal direction D2, It consists of two second protrusions 18 respectively protruding from the upper surface 4 of each side part 5c, 5d along the horizontal direction D3.

As shown in FIG. 7, the first protrusion 17 protrudes from the upper end surface to the lower surface 7 side in the central portion of the longitudinal direction D2 of the positioning groove 15 formed in the side portion 5a. The end surface is flush with the lower surface 7 of the tray body 2. In the illustrated example, the first protrusion 17 has a size along the vertical direction D <b> 2 larger than the length of the positioning convex portion 14. Further, in the illustrated example, the first protrusion 17 has a surface facing outward from the tray main body 2 in the lateral direction D3 and is flush with the side surface of the tray main body 2. An inner surface is connected to an inner peripheral surface that defines the positioning groove 15.
As shown in FIG. 8, the second protrusion 18 is formed in the same shape and size as the positioning convex portion 14, and is formed in the central portion of the lateral direction D3 in each of the side portions 5c and 5d along the lateral direction D3. Has been.

  Further, in the present embodiment, as shown in FIG. 6, the tray body 2 is formed with a notch portion (a mark) 19 for recognizing the direction of overlapping. In the illustrated example, the notch portion 19 is formed on the other side portion 5b different from the side portion 5a on which the first protrusion 17 is formed, of the side portions 5a and 5b along the vertical direction D2. The notch portion 19 is formed along the vertical direction D1 on the upper surface 4 side of the central portion in the vertical direction D2 in the other side portion 5b. It opens toward a total of 3 directions with the 15 side.

Next, the operation of the gear storage tray 1 configured as described above will be described.
FIG. 9 is a plan view of a storage package in which gears are stored in the storage holes of the gear storage tray shown in FIG. 10 is a partial cross-sectional view of the storage package shown in FIG.
First, an example of a method for storing the gear C in the gear storage tray 1 will be described.
First, the gear storage tray 1 is placed on a substantially horizontal frame or the like with the upper surface 4 facing upward, and the vertical direction D1 and the vertical direction of the tray body 2 are substantially aligned. At this time, since the positioning convex portion 14 is formed not on the lower surface 7 but on the upper surface 4 of the tray body 2, this placement is not hindered by the positioning mechanism 13.

  Next, the gear C to be stored is gripped by tweezers, for example, and the gear C is inserted into the storage hole 3 from the opening end 3 a on the upper surface 4 side of the storage hole 3. At this time, the gear C is inserted into the storage hole 3 from the end of the shaft C2 on the gear lower side. Thereafter, by releasing the grip, the gear C enters the storage hole 3 toward the lower surface 7 side. At this time, since the gear C is inserted from the end of the shaft C2 where the center of gravity is located on the lower side of the gear, the end of the shaft C2 on the lower side of the gear and the outer peripheral edge of the gear body C1 are accommodated in the receiving hole. By contacting the inner peripheral surface 6 that defines the portion 3, the posture is corrected so that the extending direction of the shaft portion C <b> 2 coincides with the vertical direction, that is, the vertical direction D <b> 1 of the tray body 2. The gear C enters the housing hole 3 so that the lower end of the shaft portion C2 faces the vertical lower side, that is, the lower surface 7 side.

  Here, since a tapered surface 8 is formed on a part of the inner peripheral surface 6 that defines the storage hole 3, the gear C enters the storage hole 3 toward the lower surface 7 side. When the gear body C1 enters the intermediate portion 8a on the taper surface 8, as shown in FIG. 10, the lower end of the outer peripheral edge of the gear body C1 is supported by the taper surface 8 and supported. Movement toward is restricted. At this time, since the movement of the gear C is restricted in a state where the center of gravity is located on the lower surface 7 side with respect to the gear main body C1, the posture is stabilized and rattling is suppressed. As a result, as shown in FIGS. 9 and 10, the gear C can be stored in the storage hole 3 with the upper side of the gear directed toward the upper surface 4.

  Further, in the present embodiment, as shown in FIG. 10, the size L5 along the vertical direction D1 from the intermediate portion 8a to the bottom surface 10 of the tapered surface 8 is the lower side of the gear in the shaft portion C2 of the gear C. Since it is longer than the length L 1, when the gear C is stored in the storage hole 3, the lower end of the shaft C 2 of the gear C may come into contact with the bottom surface 10 of the storage hole 3. Absent. Therefore, deformation of the gear C and damage to the gear C can be reliably prevented.

In this case, in this embodiment, the length L6 from the intermediate portion 8a of the tapered surface 8 to the lower end of the tapered surface 8 is smaller than the length L1 on the lower side of the gear C at the shaft portion C2. The end of the shaft C2 on the lower side of the gear is inserted into the space S2 in the storage hole 3.
At this time, in this embodiment, the heart cam C3 of the gear C does not protrude from the upper surface 4 of the tray body 2 by setting various sizes of the storage hole 3 as described above (FIGS. 2 and 4). The shaft portion C2 of the gear C protrudes from the upper surface 4 of the tray body 2 along the vertical direction D1 by a size L9 (where L9 = L2 + L3-L7).

FIG. 11 is a diagram showing a predetermined direction when the storage packages shown in FIG. 9 are overlapped with each other. FIG. 12 is a side view seen from the side along the vertical direction when the storage packages shown in FIG. 9 are overlapped in a predetermined direction. FIG. 13 is a side view seen from the side along the horizontal direction when the storage packages shown in FIG. 9 are overlapped in a predetermined direction. FIG. 14 is a partial cross-sectional view of the storage package shown in FIG.
Next, the case where the gear storage trays 1 (storage packages P) storing the gears C as described above are overlapped in a predetermined orientation as shown in FIG. 11 will be described. In the following example, a case where the gear storage trays 1 are overlapped in two stages will be described as an example.

  Here, in the present embodiment, the overlapping in a predetermined direction means that the gear storage trays 1 are overlapped in the same direction in plan view as shown in FIG. Then, when the gear storage trays 1 are overlapped in a predetermined direction as described above, they are overlapped so that the outer peripheral edges of the gear storage trays 1 coincide. At this time, in this embodiment, the tray body 2 is formed with the direction-recognizing cutout portion 19, so that the cutout portion 19 is overlapped so as to face the same direction as shown in FIGS. 11 and 12. By matching, both trays 1 and 1 can be reliably stacked in a predetermined direction.

When the gear storage trays 1 are overlapped with each other in a predetermined direction, as shown in FIGS. 12 and 13, the positioning convex portions 14 and the positioning concave grooves 15 are respectively engaged in the side portions 5a, 5b, 5c, and 5d. Combined. At this time, the movement in the lateral direction D3 of the storage tray for both gears 1 is restricted by the engagement in the lateral portions 5a and 5b along the longitudinal direction D2, and the lateral portions along the lateral direction D3 are restricted. Due to the engagement in 5c and 5d, the movement of the two-gear storage tray 1 along the longitudinal direction D2 is restricted.
Thereby, the stacked storage trays 1 for both gears are positioned in the two directions of the vertical direction D2 and the horizontal direction D3. As described above, when positioning is performed by the positioning mechanism 13, the positioning convex portion 14 and the positioning concave groove 15 are merely engaged, so that the positioning operation can be easily performed.

Then, by positioning as described above, both trays are arranged so that the shaft escape recess 11 of the upper tray 1 is disposed opposite to the storage hole 3 of the lower tray 1 as shown in FIG. 1, 1 is positioned. In this embodiment, when the gear C is stored in the storage hole 3, the shaft C2 of the gear C protrudes from the upper surface 4 of the tray body 2 of the lower tray 1 by the size L9. 11 has a depth L8> L2 + L3-L7 = L9, the gear upper end of the shaft C2 of the gear C does not contact the upper end surface of the shaft escape recess 11.
As a result, the shaft portion C2 protruding from the upper surface 4 of the tray body 2 of the lower tray 1 can be stored in the shaft escape recess 11 of the upper tray 1, and the shaft portion C2 can be stored on the lower surface of the upper tray 1. 7 can be prevented. Therefore, it is possible to reliably prevent deformation of the gear C and damage to the gear C.

FIG. 15 is a diagram illustrating a direction different from a predetermined direction when the storage packages illustrated in FIG. 9 are overlapped with each other. FIG. 16 is a side view of the storage package shown in FIG. 9 as viewed from the side along the vertical direction when attempting to overlap the storage package in a direction different from a predetermined direction.
Next, a description will be given of the case where the gear storage trays 1 storing the gear C as described above are to be overlapped in a direction different from a predetermined direction as shown in FIG. Here, in the following example, as shown in FIG. 15, a case will be described as an example in which one gear storage tray 1 is overlapped in a state rotated 90 degrees with respect to a predetermined direction.

  In this case, as shown in FIG. 16, the lower end surface of the first projection 17 formed in the positioning groove 15 of the upper tray 1 and the upper portion of the second projection 18 formed on the upper surface 4 of the lower tray 1. The end face comes into contact. Thereby, the contact between the lower surface 7 of the upper tray 1 and the upper surface 4 of the lower tray 1 can be prevented. Accordingly, when the positioning direction of the upper tray 1 and the lower tray 1 is erroneously overlapped, the shaft portion C2 protruding from the upper surface 4 of the tray body 2 of the lower tray 1 is Contact with the lower surface 7 can be prevented. Therefore, it is possible to reliably prevent deformation of the gear C and damage to the gear C.

According to the gear storage tray 1 described above, the gear C can be stored in a fixed direction quickly and easily with an easy operation of simply inserting the gear C into the storage hole 3.
Further, when the gear C is transported in the gear storage tray 1, since the gear C is stored while suppressing rattling as described above, even if it receives a shock from the outside. It is possible to prevent the gear C from being violated, and it is possible to prevent the gear C from being damaged, the deformation of the gear C, and the adhesion of foreign matters due to the surface of the tray body 2 being rubbed. .

  In addition, since a plurality of storage holes 3 are provided, a plurality of gears C can be stored and transported at a time. In addition, unlike the case where a certain amount is handled collectively, the gears C do not collide or get entangled during conveyance, so that the gear C can be reliably prevented from being deformed or damaged. Can do.

  Further, by superimposing the gear storage trays 1, the gear C can be prevented from jumping out from the storage hole 3 toward the upper surface 4 side even when receiving an impact from the outside during transport or the like. can do. In addition, by superimposing the gear storage trays 1 on each other, it is possible to increase the number of gear storage trays 1 transported at a time when the gear C is transported, and to improve the gear C transport efficiency.

Further, when the gear C is stored in the storage hole 3, the lower end of the shaft C <b> 2 is inserted into the space S <b> 2 in the storage hole 3. Even if the gear C rattles, the shank of the gear C can be more reliably suppressed by the shaft portion C2 coming into contact with the regulating surface 9.
Further, since the storage hole 3 is formed in a bottomed shape, it is possible to prevent foreign matters from entering from the lower surface 7 side of the tray body 2, and it is possible to more reliably prevent foreign matter from adhering to the gear C. Can be prevented.

In addition, when the gear C is transported in the gear storage tray 1 and then assembled using the gear C, the gear C is stored in a fixed direction while suppressing rattling as described above. Therefore, even after conveyance, the gear C can be stored in the storage hole 3 with the upper side of the gear being directed to the upper surface 4 side, and the workability of picking up the gear C can be significantly improved. it can. In addition, in the case where the lubrication operation is performed on the portion of the gear C located on the upper side of the gear (for example, the heart cam C3), the lubrication operation can be performed in a state where the gear C is stored in the storage hole 3. Can be further improved.
As described above, according to the gear storage tray 1, it is not necessary to perform the take-out operation until it is stored, transported, and assembled, and can be used consistently.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above-described embodiment, the regulation surface 9 is formed on the inner peripheral surface 6 that defines the storage hole 3. However, the regulation surface 9 may not be provided.
In the embodiment, a plurality of storage hole portions 3 are provided, but one storage hole portion 3 may be provided.

  In the above-described embodiment, the tapered surface 8 has a shape in which the longitudinal sectional view is an inclined plane. However, the tapered surface 8 is not limited to this, and any shape may be used as long as the diameter decreases from the upper surface 4 side toward the lower surface 7 side. . For example, the tapered surface 8 may have a convex curved surface or a concave curved surface as viewed in the longitudinal section. Further, the tapered surface 8 may have a stepped portion at a middle position in the vertical direction D1.

  Moreover, in the said embodiment, although the accommodation hole part 3 shall be formed in bottomed shape, you may penetrate to the said up-down direction D1 of the tray main body 2. FIG. Even in the case of the bottomed shape, the size L5 along the vertical direction D1 from the intermediate portion 8a to the bottom surface 10 of the tapered surface 8 is the length below the gear in the shaft portion C2 of the gear C. It does not need to be formed to be larger than the length L1. For example, the size L5 may be equal to the length L1.

  Further, in the above embodiment, the shaft escape recess 11 is formed on the lower surface 7 of the tray body 2, but the shaft escape recess 11 may not be provided. In this case, for example, the gear storage tray 1 is formed by making the storage hole 3 large (deep) along the vertical direction D1 so that the shaft portion C2 does not protrude from the upper surface 4 of the tray body 2. It is also possible to prevent the upper end portion of the shaft portion C2 of the gear C from coming into contact with the lower surface 7 of the upper tray 1 at the time of overlapping. However, it is preferable that the end portion on the upper side of the shaft portion C2 of the gear C protrudes because workability when picking up the gear C can be improved.

  Moreover, in the said embodiment, although the positioning mechanism 13 was provided, the positioning mechanism 13 does not need to be provided. Further, when the positioning mechanism 13 is provided, the form of the positioning mechanism 13 is not limited to that described above. For example, a positioning convex portion or a positioning concave groove may be formed in the central portion of the tray body 2, or a positioning concave groove is formed on the upper surface 4 of the tray main body 2 and a positioning convex portion is formed on the lower surface 7 of the tray main body 2. It doesn't matter.

Moreover, in the said embodiment, although the mispositioning prevention mechanism 16 was provided, the mispositioning prevention mechanism 16 may not be provided.
Moreover, in the said embodiment, although the notch part 19 shall be formed in the tray main body 2 as a mark for direction recognition, the notch part 19 does not need to be provided. Further, the mark is not limited to the notch 19 as long as the direction can be recognized. For example, a convex body or the like may be formed on the tray body 2.

Moreover, in the said embodiment, although the tray main body 2 was planar-view square shape, it is not restricted to this, For example, planar-view circular shape, planar-view rectangular shape, etc. may be sufficient.
Further, in the above-described embodiment, the case has been described in which the gear storage trays 1 (storage packages P) in which the gears C are stored in the storage holes 3 are overlapped in two stages. Even in this case, the same effects can be obtained. Furthermore, the storage packages P need not be superposed.

  Further, in the above embodiment, when the gear storage trays 1 are stacked in multiple stages, the gear storage trays 1 are stacked after the storage packages P in which the gears C are stored in advance. It is not a thing. For example, after the gear C is stored in the first gear storage tray 1, the empty gear storage tray 1 may be stacked, and then the gears may be stored in the empty gear storage tray 1. Even if the operations are performed in this order, the same effects can be obtained.

In the embodiment, when the gear storage trays 1 are stacked in multiple stages, a machine such as a robot may be used. In this case, since the notch 19 can be programmed as an index, the control becomes very easy.
In the embodiment, when the gear storage trays 1 are transported after being stacked in multiple stages, it is preferable to place the empty gear storage tray 1 on the top as a cover. Moreover, when conveying after laminating | stacking in multiple stages, it is preferable to cover the whole with a heat shrink film etc. and to pack. By doing in the above, it can prevent effectively that a foreign material etc. adhere to gear C.

  In addition, it is possible to appropriately replace the constituent elements in the embodiment with known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

It is a block diagram of one Embodiment of the storage tray for gears which concerns on this invention. Fig.2 (a) is a side view which shows the gear accommodated in the storage tray for gears shown in FIG. FIG. 2B is a plan view showing gears stored in the gear storage tray shown in FIG. It is a cross-sectional arrow AA figure shown in FIG. It is the elements on larger scale of sectional drawing shown in FIG. It is the top view which looked at the storage tray for gears shown in FIG. 1 from the lower surface side. It is an arrow B figure shown in FIG. It is arrow C figure shown in FIG. It is arrow D figure shown in FIG. It is a top view of the storage package which accommodated the gearwheel in the storage hole part of the storage tray for gears shown in FIG. It is a fragmentary sectional view of the storage package shown in FIG. FIG. 10 is a diagram illustrating a predetermined direction when the storage packages illustrated in FIG. 9 are overlapped with each other. It is the side view seen from the side part along the vertical direction when the storage package shown in FIG. 9 was piled up by predetermined direction. It is the side view seen from the side part along the horizontal direction when the storage package shown in FIG. 9 is piled up by the predetermined direction. It is a fragmentary sectional view of the storage package shown in FIG. FIG. 10 is a diagram illustrating a direction different from a predetermined direction when the storage packages illustrated in FIG. 9 are overlapped with each other. It is the side view seen from the side part along the vertical direction at the time of trying to overlap the storage package shown in FIG. 9 in the direction different from a predetermined direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gear storage tray, upper tray, lower tray 2 Tray main body 3 Storage hole 3a Open end of storage hole 4 Upper surface of tray main body 5 Outer peripheral edge of tray main body 6 Inner circumference defining storage hole Surface 7 Lower surface of tray body 8 Tapered surface 9 Restricting surface 10 Bottom surface of storage hole 11 Recess for shaft escape 13 Positioning mechanism 14 Positioning convex 15 Positioning groove 16 Mispositioning prevention mechanism 19 Notch (mark)
C Gear C1 Gear body C2 Shaft D1 Vertical direction of tray body P Storage package (storage body)
W1 Diameter of the gear body W2 Inner diameter of the opening end on the upper surface side of the storage hole W3 Inner diameter of the lower end of the tapered surface W4 Inner diameter of the shaft escape recess L1 The shaft portion extending in the direction in which the center of gravity is located in the shaft portion of the gear Length L5 Size along the vertical direction from the position where the inner diameter matches the diameter of the gear body on the taper surface to the bottom surface

Claims (10)

A gear-like storage tray having a disc-shaped gear main body and a shaft portion provided at the center of the gear main body and storing gears on the shaft portion whose center of gravity is separated from the gear main body,
A flat tray body,
The tray main body is formed in the tray main body so as to open to at least the upper surface side, and the inner diameter of the opening end portion on the upper surface side is larger than the diameter of the gear main body, and the gear includes a shaft portion of the gear. A storage hole for storing the tray body in a state along the vertical direction of the tray body,
At least a part of the inner peripheral surface that defines the storage hole is formed with a tapered surface that has a diameter that decreases from the upper surface side toward the lower surface side and that has an inner diameter at the lower end that is smaller than the diameter of the gear body. A storage tray for gears, The gear storage tray according to claim 1,
The inner peripheral surface defining the storage hole portion is continuous with the lower end of the tapered surface, and is formed with a regulating surface having the same inner diameter regardless of the inner diameter of the lower end and the vertical direction. Storage tray for gears. The gear storage tray according to claim 1 or 2,
The storage hole for gears, wherein the storage hole is formed in a bottomed shape. The gear storage tray according to claim 3,
The storage hole has a size along the vertical direction from the position where the inner diameter matches the diameter of the gear body on the tapered surface to the bottom surface, and extends in the direction in which the center of gravity is located at the shaft of the gear. A gear storage tray characterized by being formed to be larger than the length of the shaft portion. The gear storage tray according to claim 3 or 4,
A shaft escape recess having an inner diameter smaller than the diameter of the gear body is formed at a position corresponding to the storage hole on the lower surface of the tray body.
When the gear storage trays are overlapped with each other in a predetermined direction, both trays are positioned so that the shaft escape recess of the upper tray is disposed opposite to the storage hole of the lower tray. A gear storage tray comprising a positioning mechanism. The gear storage tray according to claim 5,
The positioning mechanism includes a positioning convex portion projecting upward on an outer peripheral edge portion on the upper surface of the tray body, and an opening facing downward on an outer peripheral edge portion on the lower surface of the tray main body. A gear storage tray comprising: a positioning concave groove engaged with the gear. The gear storage tray according to claim 5 or 6,
When the lower surface of the upper tray and the upper surface of the lower tray are to be stacked in a direction different from a predetermined direction, contact between the lower surface of the upper tray and the upper surface of the lower tray is performed. A gear storage tray comprising a mispositioning prevention mechanism for preventing the misalignment. The gear storage tray according to any one of claims 5 to 7,
The tray main body is formed with a mark for recognizing a direction when the tray is overlapped. The gear storage tray according to any one of claims 1 to 8,
A gear storage tray, wherein a plurality of the storage holes are provided. The gear storage tray according to any one of claims 1 to 9,
A disc-shaped gear body, and a shaft portion provided at the center of the gear body, the center of gravity being on the shaft portion spaced from the gear body, and in the storage hole of the gear storage tray A stored gear,
A storage body comprising:

Images