Technological Filed
[0001] The present invention relates to a spinning top toy.
Background Technology
[0002] As battle games using spinning top toys, by applying impact to the spinning top toys
each other, there are cases in which the rotation of the spinning top toy of an opponent
is stopped by the impact force, the spinning top toy of the opponent is flicked out
by the impact force, or the spinning top toy of the opponent is disassembled by the
impact force, etc.
[0003] In such spinning top toys for battle games, a part colliding with the opponent, that
is, a blade shaped overhanging part is formed on a circumference surface of a body,
so that the overhanging part is collided.
[0004] As this kind of spinning top toys, it is well-known that a body is configured with
a plurality of body pieces (divided pieces) laminated in a vertical direction (up
and down direction)(see e.g., Patent Document 1). According to this kind of spinning
top toys, alternative body pieces in which exterior shapes, weights, or materials
are different are prepared in advance, and the characteristics of the spinning top
toys can change by replacing a body piece in every body piece unit.
[Prior Art Document]
[Patent Document]
[0005] [Patent Document 1] Japanese Utility Model Registered Publication No.
3079269
Disclosure of the Invention
Problems to Be Solved by the Invention
[0006] Generally, a spinning top toy collides with an opponent by contacting an outermost
periphery uneven part. Therefore, when viewing an exterior shape of a body, the characteristics
of the spinning top toy largely rely on the shape of the outermost periphery uneven
part of the body.
[0007] Therefore, when the characteristics of the spinning top toy try to change by changing
the shape of the outermost periphery uneven part of the body, in the case of the aforementioned
spinning top toy, it is required to change the exterior shape of the body pieces which
configure the outermost periphery uneven part of the body.
[0008] However, in the case of the aforementioned spinning top toy, since the body is configured
with the body pieces in the laminated structure, each body piece must be thin and
fragile in comparison with the body in an integral structure. Therefore, in the case
of the aforementioned spinning top toy, in order to make sufficiently durable structure
for colliding with the opponent, it is required to laminate a plurality of body pieces,
which configure the outermost periphery uneven part of the body, having almost the
same exterior shapes. However, it is troublesome to prepare the plurality of body
pieces having almost the same exterior shapes in advance.
[0009] Further, the characteristics of the spinning top toys rely on a weight or a material
of the body. It is because when the weight or the material changes, the impact force
applying to the opponent or receiving own spinning top toy changes or the rotation
characteristics change.
[0010] However, in the case of the aforementioned spinning top toys, each body piece itself
is made of a uniform material, and the shape with a balance in a circumferential direction
is formed. Therefore, for example, even if a body piece with different weight is replaced,
the center of gravity changes only in the vertical direction. In addition, even if
a body piece with different material is replaced, the characteristics become uniform
in the circumferential direction. That is, regardless of whether any portion of the
spinning top toy in the circumferential direction collides with, the shock-absorbing
effect becomes uniform.
[0011] In view of the design, specifically, the top surface of the body is the portion where
players easily see, but in the case of the aforementioned spinning top toys, the changeful
design cannot be enjoyed unless the most upper body pieces are replaced.
[0012] The present invention was created considering the aforementioned problems. An object
is to provide a spinning top toy which easily perform rearrangement and can enjoy
changes in configuration in a horizontal direction.
Means for Solving the Problems
[0013] According to the first means, a spinning top toy is provided with a body and a shaft
part. The spinning top toy includes a plurality of divided pieces, which configures
at least one of the body and the shaft part and is arranged along a surface which
is orthogonal to a rotating shaft in a vertically dividing state, and a coupling means,
which detachably couples the divided pieces adjacent to each other. The divided pieces
can be reassembled with other divided pieces having the coupling means.
[0014] According to the second means, in the first means, the plurality of divided pieces
constitutes an external appearance of the body and constitutes an outline of the body
in a plane view.
[0015] According to the third means, in the second means, n the divided pieces, an overhanging
part which stretches outwardly in a radial direction of the body is formed.
[0016] According to the fourth means, in any one of the first means to the third means,
the coupling means is provided with a ridge, which is formed in one of the divided
pieces adjacent to each other, and a recessed part which is formed in the other one
of the divided pieces, and the divided pieces adjacent to each other is coupled by
engaging the ridge and the recessed part.
[0017] According to the fifth means, in the fourth means, the body constitutes two semicircular
shaped divided pieces in the plane view, and the ridge and the recessed part are engaged
by moving the two divided pieces in an opposite direction each other in a diameter
direction.
[0018] According to the sixth means, in the fifth means, in a state in which the ridge and
the recessed part are engaged, a hole is formed between the two divided pieces, and
by inserting a stopper into the hole, a coupling state of the two divided pieces is
secured.
Effect of the Invention
[0019] According to the first means, since a part of divided pieces can be changed to alternative
divided pieces, the external appearance of the spinning top toy is easily formed as
personal preference, and the characteristics of the spinning top toy can be changed.
Specifically, comparatively uniform divided pieces can be changed as personal preference
by rearranging divided pieces which are different configurations in color, pattern,
shape, configuration or combinations thereof. A material or a weight is included in
the configurations.
[0020] According to the second means, the external appearance or the characteristic of the
spinning top toy can be largely changed.
[0021] According to the third means, by exchanging the divided pieces to the alternative
divided pieces, the offensive power can be changed.
[0022] According to the fourth means, since the coupling means is formed by the ridge and
the recessed part, the divided pieces can be easily coupled and detached.
[0023] According to the fifth means, the two divided pieces can be easily assembled by sliding
in opposite directions each other in the diameter direction.
[0024] According to the sixth means, since the disengagement between the ridge and the recessed
part is prevented by the stopper, the two divided pieces can be prevented from removing
during the spinning.
Brief Description of the Drawings
[0025]
Fig. 1 is a perspective view showing a spinning top toy and a launcher (spinning top
toy launcher) according to an embodiment.
Fig. 2 is a perspective view explaining how to play with a spinning top toy according
to the present embodiment.
Fig. 3 is a perspective view showing a shaft part of the spinning top toy according
to the present embodiment.
Fig. 4 is a cross-sectional perspective view showing a shaft part of the spinning
top toy according to the present embodiment.
Fig. 5 is a perspective view showing a state in which a flywheel of the spinning top
toy according to the present embodiment is viewed from the upper side.
Fig. 6 is a perspective view showing a state in which the flywheel of the spinning
top toy according to the present embodiment is viewed from the lower side.
Fig. 7 is a perspective view showing a state in which a body of the spinning top toy
according to the present embodiment is viewed from the upper side.
Fig. 8 is a perspective view showing a state in which the body of the spinning top
toy according to the present embodiment is viewed from the lower side.
Fig. 9 is an exploded perspective view of the body of the present embodiment showing
a coupling means.
Fig. 10 is a schematic view for explaining a coupling of the coupling means of the
present embodiment.
Fig. 11 is a perspective view showing another coupling mode of the body according
to the present embodiment.
Fig. 12 is a perspective view showing another body of the spinning top toy according
to the present embodiment.
Preferred Embodiments of the Invention
[0026] Hereinafter, a spinning top toy of the present invention will be described based
on embodiments shown in the drawings.
<Whole structure>
[0027] Fig. 1 shows a toy set including a spinning top toy 1 of the present embodiment and
a launcher 60 (spinning top toy launching toy).
[0028] Among these toys, the spinning top toy 1 is a spinning top toy which can be used
for, so called, battle games. For example, the spinning top toys 1 can be used for
the battle games in which the spinning top toys 1 collide with each other and the
spinning top toy 1 of the opponent is disassembled by the impact force as shown in
Fig. 2.
[0029] As shown in Fig. 2, the spinning top toy 1 is provided with a shaft part 10, a flywheel
30, and a body 40.
<Detail structure>
1. Shaft part 10
[0030] Fig. 3 is a perspective view showing the shaft part 10. Fig. 4 is a cross-sectional
perspective view of the shaft part. In the explanation of the shaft part 10, the terms
"up", "down", "left", "right", "front", and "back" refer to the corresponding directions
in Fig. 3.
[0031] Among the parts, the shaft part 10 is provided with a rotating shaft 11, which is
a grounding part and positioned at a lower end part, a flange 12 which is an intermediate
part in the vertical direction, and a cylindrical body 13 which is positioned in an
upper end part.
[0032] The flange 12 and the cylindrical part 13 are integrally formed. A cylinder 14 is
provided in the shaft of the cylindrical body 13. The upper end part of the cylinder
14 is made larger in diameter, and an overhanging hook 17 projects outwardly in a
radial direction in each of the front and back in the outer periphery of the large
diameter portion 14a. The cylinder 14 is fixedly provided in a shaft lower part 10a.
The outer periphery surface of the shaft lower part 10a is gradually reduced in diameter
in the direction from the flange 12 side to the tip end side of the rotating shaft
11, so as to form substantially a reversed conical shape as a whole. The shaft lower
part 10a is fastened to the flange 12 by a screw, etc. which is not shown in the drawings.
[0033] In each of the front and back of the flange 12 and the cylindrical body 13, a hole
13a is formed throughout the flange 12 and the cylindrical body 13. Further, in each
of the right and left of the outer periphery surface of the cylindrical body 13, a
projection part 16 is formed. The outer periphery surface of each projection part
16 shares a plane with the outer periphery surface of the flange 12.
[0034] Further, the shaft part 10 is provided with a cylindrical shape urging member 18.
The urging member 18 has an annular top plate 18b which is the shape fitting to the
outside of the upper end part of the cylinder 14, and the inner part is hollow and
opening downwardly. The urging member 18 is arranged inside the cylinder 14 to surround
the cylindrical body 13. In each of the front and back of the outer periphery of the
lower end part of the urging member 18, a leg part 18a is formed and stretches outwardly
in a radial direction.
[0035] The urging member 18 is installed so as to expose leg parts 18a from the holes 13a
which correspond to the leg parts 18a. The holes 13a allow the movement of the leg
parts 18a in the vertical direction, but the movement is restricted at the upper end
of the holes 13a. Further, the urging member 18 is urged in the upper direction by
the spring 19, and in a normal condition, the top end surface of the urging member
18 is positioned at the same height as the top end of the cylindrical part 13.
[0036] Further, in each of right and left of the upper surface of the urging member 18,
protruding strips (projections) 20, which extend in the radial direction, are formed.
2. Flywheel 30
[0037] Fig. 5 is a perspective view showing a flywheel 30 when viewed from the upper side.
Fig. 6 is a perspective view showing the flywheel 30 when viewed from the lower side.
[0038] The flywheel 30 is formed in an annular shape. At the inner periphery side of the
bottom surface of the flywheel 30, an annular step part 30a, which can store the flange
12 of the shaft part 10 from the lower side, is formed. A proj ection part 31, which
projects toward the upper side, is formed in each of the right and left of the upper
surface of the flywheel 30. At the lower side part of each projection part 31, a recessed
part 32, which can store the projection part 16 of the shaft part 10 from the lower
side, is formed. Further, on the upper surface of the flywheel 30, a tongue-piece
part 33, which extends upwardly, is formed directly outside of each of the projection
part 31. The tongue-piece parts 33 project higher than the projection parts 31.
3. Body 40
[0039] Fig. 7 is a perspective view showing a state in which the body 40 is viewed from
the upper side. Fig. 8 is a perspective view showing a state in which the body 40
is viewed from the lower side. In the explanation of the body 40, the terms "up",
"down", "left", "right", "front", and "back" refer to the corresponding directions
in Fig. 7, unless otherwise stated.
[0040] The body 40 is formed as a disc-shape, and it is vertically divided into half in
the front and back direction. The bodies 40A, 40B have a substantially point symmetry
shape. These divided pieces of the body pieces 40A, 40B are integrally coupled by
a coupling means 50 which will be described later.
[0041] Specifically, it will be described. In the top surface of the bodies 40A, 40B, one
end part in a diameter direction in a divided part C projects toward the opposite
body in a rectangular shape, and the other end in the diameter direction in the divided
part C is notched in a rectangular shape. A top surface overhanging part C1 of the
bodies 40A, 40B and a top surface cutout part C2 are approximately same shape and
size in a plane view. Further, in the top surface of the bodies 40A, 40B, the central
part in the diameter direction in the divided part C is cut as a semicircular shape
in the plane view.
[0042] When the body pieces 40A, 40B are assembled each other, it becomes a disc-shape as
a whole, and a circular hole 41 is formed at the center of the body 40.
[0043] A blade shaped overhanging part 42 which collids with the opponent is formed around
the body 40 which is formed in such manner. When the overhanging part 42 of the body
piece 40A and the overhanging part 42 of the body piece 40B are distinguished, the
former denotes reference numeral 42a and the latter denotes reference numeral 42b.
Further, at each of the right and left of the body 40, an arcuate slit 43, which can
inserte each tongue-piece part 33 of the flywheel 30 from the lower side, is formed.
The one end side of the width of each arcuate slit 43 in the circumferential direction
is wider and the other end side is narrower.
[0044] Further, in the central portion of lower surface of the body 40, a cylindrical wall
44 having a shape in which the edge of the aforementioned hole 41 extends downwardly
is formed. In the lower end of the cylindrical wall 44, hooks 45 which project inwardly
are formed. Cutout parts 46 are formed between the hooks 45 which are adjacent to
each other. In the lower surface of one end part of the hooks 45 in the circumferential
direction, a plurality of raised parts 47 in which projections extend in the radial
direction are formed at predetermined intervals.
4. Coupling means 50
[0045] Fig. 9 is a perspective view showing a state in which the body piece 40A and the
body piece 40B of the body 40 are separated.
[0046] The coupling means 50 constitutes a recessed groove 51 and a ridge 52, which are
provided in the body pieces 40A, 40B, and an identification member 53, which fits
to the hole 41 of the body 40. The identification member 53 is used for identifying
the spinning toy top 41 of oneself and others, and each identification member 53 has
different shape or color.
[0047] In the lower side of the top surface overhanging part C1 of the bodies 40A, 40B,
a cross-sectional T-shaped recessed groove 51 which opens toward the side surface
and extends in the diameter direction is formed. The internal end of the recessed
groove 51 is opened, and it is positioned directly under the internal end of the top
surface overhanging part C1 of the bodies 40A, 40B. Further, in an area where the
top surface cutout part C2 of the bodies 40A, 40B is formed, a cross-sectional T-shaped
ridge 52 is formed. The internal end of the ridge 52 is positioned directly under
the internal end of the top surface cutout part C2 of the bodies 40A, 40B. The ridge
52 projects from the top surface cutout part C2 of the bodies 40A, 40B in the plane
view.
[0048] In the outer periphery surface of the shaft part 53a of the identification member
53, a guide groove 54 is formed by a groove portion 54a, a groove portion 54b, and
a groove portion 54c. The groove portion 54a opens the lower end and extends in the
vertical direction. The groove portion 54b connects to the upper end part of the groove
portion 54a and extends in an oblique lower direction. The groove portion 54c connects
to the lower end part of the groove portion 54b and extends in the horizontal direction.
The identification member 53 is mounted into the hole 41 of the body 40. At the inner
circumference of the hole 41 of the body 40, a projection 55 engaging with the guide
groove 54 is formed.
(Assembly method of body 40)
[0049] As shown in Fig. 10, the body 40 is assembled in a way in which the body piece 40A
is brought close to the body piece 40B from one direction and both of the divided
parts C slide. Further, the ridge 52 of the body piece 40A and the recessed groove
51 of the body piece 40B are inserted and fitted, and the recessed groove 51 of the
body piece 40A is engaged with the ridge 52 of the body piece 40B. At this point,
the ridge 52 is positioned by an end wall 51a which defines the outer end of the recessed
groove 51.
[0050] Next, the shaft part (insertion part) 53a of the identification member 53 is inserted
into the hole 41 of the body 40 in which the body pieces 40A, 40B are assembled. In
this state, the groove portion 54a of the identification member 53 is engaged with
the projection 55 which is formed on the inner circumference of the hole 41 of the
body 40. With this structure, the identification member 53 is inserted into the hole
41 in a predetermined depth position. After that, when the identification member 53
revolves in a predetermined direction, the projection 55 is engaged with the groove
portion 54b, and as the identification member 53 revolves, the identification member
53 slightly floats with respect to the hole 41. At the position in which the projection
55 reaches the groove portion 54c, the identification member 53 is temporarily fixed
inside the hole 41.
[0051] The body 40 is not limited to the aforementioned body pieces 40A, 40B. For example,
instead of the body piece 40A shown in Fig. 11, another body piece 40C which has the
same coupling means 50 can be coupled. The body piece 40C constitutes the body 40
of another spinning top toy as shown in Fig. 12. The body 40 of another spinning top
toy is provided with the body piece 40C and a body piece 40D. The body piece 40C and
the body piece 40D have the same coupling means 50 as the present embodiment. In Fig.
11, the overhanging parts of the body piece 40C, 40D of another spinning top toy denote
42c, 42d. A plurality of body pieces which are different in color, pattern, shape,
configuration, or combination thereof, etc. may be preliminary and separately prepared
in advance. As examples of configurations, the materials may be different. Specifically,
it may be considered as different materials such as plastic, rubber, etc., or it may
be considered as different weights of body pieces.
<Assembly method of spinning top toy 1>
[0052] The shaft part 10 and the flywheel 30 are assembled in the fitting state by matching
the projection parts 16 of the shaft part 10 with the recessed parts 32 of the flywheel
30 from the lower side. Next, the assembled body is brought close to the body 40 from
the lower side.
[0053] The tongue-piece part 33 of the flywheel 30 is inserted into one end part of the
arcuate slits 43 of the body 40 from the lower side. In this state, the hooks 17 of
the shaft part 10 and the cutout part 46 of the body 40 are matched. This state is
the disassembled state. After that, the shaft part 10 of the aforementioned assembled
body is pressed to the body 40 side. Then, the flywheel 30 is pressed against the
lower surface of the body 40. Further, the spring 19 inside the shaft part 10 is contracted
and the urging member 18 is lowered, so that the hooks 17 of the shaft part 10 are
relatively pushed more upward than the hooks 45 of the body 40. Then the hooks 45
of the body 40 is positioned in the lower side of the hooks 17 of the shaft part 10.
When the shaft part 10 is integrally rotated with the flywheel 30 in the predetermined
direction (direction opposite to the rotation direction of the spinning top toy 1),
it becomes the state in which the hooks 17 and the hooks 45 are overlapped in the
vertical direction. When the shaft part 10 is released from hands, by the urging force
of the spring 19 inside the shaft part 10, the lower surface of the hooks 17 of the
shaft part 10 and the upper surface of the hooks 45 of the body 40 are contacted.
In this state, that is, the state in which the lower surface of the hooks 17 of the
shaft part 10 and the upper surface of the hooks 45 of the body 40 are contacted is
the assembled state. With this, the projections 20 are meshed with the raised parts
47, so that the spinning top toy 1 is assembled.
[0054] In this state, the cylindrical body 13 is inserted from the lower side of the hole
41 and contacts to the lower end of the identification part 41. With this structure,
the coupling of the body pieces 40A, 40B is surely secured. In a case in which the
coupling of the body pieces 40A, 40B is surely secured without the identification
part 41, the identification part 41 is not required. Further, a screw may be used
instead of the identification part 41.
<How to play, etc.>
[0055] Next, an example of how to play with the spinning top toy 1 will be described.
[0056] In this case, a charge of the spinning force of the spinning top toy 1 is performed
by the launcher 60 as shown in Fig. 1. In the inside part, the launcher 60 is provided
with a disk which is not shown, and the disk is charged in one rotational direction
by the power spring which is not shown. When the string, which is not shown, wound
around the disk is pulled by a handle 61, the disk is rotated, and therefore, the
spinning top holder 62 is rotated. The rotation of the spinning holder 62 is transmitted
to the spinning top 1 by the forks 63 projecting downward, so that the spinning top
toy 1 spins. In this case, the forks 63 are inserted to the arcuate slits 43 of the
body part 40. When the handle 61 of the launcher 60 is pulled to the end, the rotation
of the disk and further, the spinning top holder 62 is stopped, and on the other hand,
the spinning top toy 1 is rotated further by the inertia force, so that the spinning
top toy 1 is released from the spinning top holder 62 in accordance with the tilting
faces 63a of the forks 63.
[0057] The spinning top toy 1, which is launched in such manner, is rotated in a predetermined
direction in a predetermined field. When it collides with the spinning top toy 1 of
the opponent, by the impact fore of the collision, the opposite direction force, which
is opposite to the rotation direction of the shaft part 10 and the flywheel 30, is
applied to the body 40. With this, the body part 40 is relatively rotated to the direction
opposite to the rotation direction of the shaft part 10 and the flywheel 30.
[0058] And then, by relatively rotating the shaft part 10 with respect to the body 40, the
engagement position between the raised parts 47 of the lower surface of the body 40
and the protruding strips 20 is changed. When it reaches at the locking releasing
position, the locking for the engagement between the cutout part 46 of the flange
45 of the body 40 and the hooks 17 of the shaft part 10 is released, so that the body
40 is separated from the shaft part 10 by the urging force of the spring 19 inside
the shaft part 10.
[0059] In this spinning top toy 1, when colliding with the opponent, it gives the strong
impact to the opponent by the overhanging part 42 of the body 40. In this case, in
the spinning top toy 1, since the body pieces, which configures the body 40, can be
rearranged, the connecting state is changed in accordance with the configuration,
so that the design or the offensive power is changed.
[0060] The present invention is described based on the embodiments above, but the present
invention is not limited to the aforementioned embodiments, and needless to say, various
modifications can be made.
[0061] For example, in the aforementioned embodiments, the body 40 was vertically divided
half in the line extending in the approximately diameter direction. However, for example,
the body pieces can be divided in a fan shape.
[0062] Further, the coupling means 50 is not limited. For example, the body pieces may be
connected by a dovetail groove and a dovetail in the vertical direction. The divided
parts, in which the divided parts of the body pieces are faced each other, are moved
in a direction of approaching from the direction orthogonal to the divided parts,
and the protruding part of one side and the recessed part of the other side may be
engaged. In addition, the body pieces can be connected by a magnet.
[0063] Further, in the aforementioned embodiments, the body 40 is divided into half body
pieces. However, it may be divided into more than three. Furthermore, the body 40
is not only divided into equal parts. For example, it may be a configuration to be
capable of removing a part which is not equal part such as one third of the body piece.
[0064] Further, in the aforementioned embodiments, the body 40 is divided, but it is not
limited to the body 40. A part of the shaft part 10 (e.g., the shaft lower part 10a)
may be vertically divided, and the part (additional part) may be different in weight
or shape.
[Explanation of symbols]
[0065]
- 1
- spinning top toy
- 10
- shaft part
- 10a
- shaft lower part
- 11
- rotating shaft
- 30
- flywheel
- 40
- body
- 40A, 40B, 40C, 40D
- body piece
- 41
- identification member insertion hole
- 42a, 42b, 42c, 42d
- overhanging part
- 50
- coupling means
- 51
- recessed groove
- 52
- ridge
- 53
- identification member (stopper)
1. A spinning top toy in which a body and a shaft part are provided, the spinning top
toy comprising:
a plurality of divided pieces configuring at least one of the body and the shaft part,
and being arranged along a surface which is orthogonal to a rotating shaft in a vertically
dividing state; and
a coupling means detachably coupling the divided pieces adjacent to each other,
wherein the divided pieces are capable of being reassembled with other divided pieces
having the coupling means.
2. The spinning top toy according to claim 1, wherein the plurality of divided pieces
constitutes an external appearance of the body and constitutes an outline of the body
in a plane view.
3. The spinning top toy according to claim 2, wherein in the divided pieces, an overhanging
part which stretches outwardly in a radial direction of the body is formed.
4. The spinning top toy according to any one of claims 1 to 3, wherein the coupling means
is provided with a ridge, which is formed in one of the divided pieces adjacent to
each other, and a recessed part which is formed in the other one of the divided pieces,
and
the divided pieces adjacent to each other is coupled by engaging the ridge and the
recessed part.
5. The spinning top toy according to claim 4, wherein the body constitutes two semicircular
shaped divided pieces in the plane view, and the ridge and the recessed part are engaged
by moving the two divided pieces in an opposite direction each other in a diameter
direction.
6. The spinning top toy according to claim 5, wherein in a state in which the ridge and
the recessed part are engaged, a hole is formed between the two divided pieces, and
by inserting a stopper into the hole, a coupling state of the two divided pieces is
secured.
7. The spinning top toy according to claim 1, wherein
the spinning top toy is for battling against an opponent top toy by colliding the
body to the opponent top toy, and
a characteristic of the spinning top toy is changed by replacing the first divided
piece.
8. The spinning top toy according to claim 1, further comprising
another divided piece, wherein
the another divided piece is replaceable with one of the plurality of divided pieces.
9. The spinning top toy according to claim 8, wherein
the one of the plurality of divided pieces has a first shape, and
the another divided piece has a third shape being different from the first shape.
10. The spinning top toy according to claim 9, wherein
the one of the plurality of divided pieces is made of a first material, and
the another divided piece is made of a third material being different from the first
material.