JP2017165271A - Functional component device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a functional component device capable of firmly fixing a functional component side mounted section of a functional component to a functional component mounting member even when a gap is generated between an outer surface of the functional component side mounted section and an inner surface of a recess of a functional component mounting member.SOLUTION: A functional component device comprises: a functional component; and a rubber functional component mounting member (functional component mounting pedestal 1) with a recess 2A for mounting a functional component side mounted section of the functional component in a fitting state and a bottom surface 4 mounted on an inner surface of a tire facing an inner bottom part of the recess. The functional component device comprises: a plane surface provided on a bottom part of the functional component side mounted section and a recess surface (top surface 5t) provided on the inner bottom part of the recess, and attached to the plane surface.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a functional component device including a functional component and a functional component mounting member for mounting the functional component to a tire.

  For example, a functional component such as a sensor module in which a sensor (a pressure sensor, a temperature sensor, an acceleration sensor, etc.), a battery or a power generation element, and a wireless device are integrated is connected via a functional component mounting base as a rubber functional component mounting member. In the technology for detecting the state of the tire by attaching it to the inner surface of the tire, as the functional component mounting base, a mounting portion having a recess in which a functional component side mounting portion provided in the functional component is mounted in a fitted state There is known a functional component device that includes a functional component, that is, a functional component and a functional component mounting base for mounting the functional component on a tire (see Patent Document 1).

JP2015-160512A

For example, a large amount of electric power is required to transmit information obtained by sensors mounted on the functional parts mounted on the inner surface of the tire via the functional part mounting base to the vehicle side. A power generation device (generator) may be provided. In order to generate such a large amount of power, a functional component equipped with a large and heavy power generation device must be mounted on the inner surface of the tire via the functional component mounting base, so that the functional component is mounted via the functional component mounting base. In order to mount on a tire, it is necessary that the functional component mounting base is firmly bonded to the tire and the functional component is firmly fixed to the functional component mounting base.
In the case of a structure in which the functional component side mounted portion provided in the functional component is fitted into the concave portion of the functional component mounting base as in the functional component device disclosed in Patent Document 1, the concave portion of the functional component mounting base is If air does not enter between the inner surface and the outer surface of the functional part side mounting part, the entire functional part mounting base is compressed by the differential pressure with the inside of the tire, and the functional part side mounting part becomes the concave part of the functional part mounting base. Can be firmly fixed.
However, in the functional component device disclosed in Patent Document 1, the top surface of the convex portion formed on the inner bottom portion of the concave portion of the functional component mounting base and the bottom surface of the concave portion provided on the bottom portion of the functional component side mounted portion are provided. Although it is a structure to fit, since the top face of the convex part and the bottom face of the concave part which are mutually fit are formed in a plane, the inner surface of the concave part of the functional part mounting base and the functional part side mounted part Even if air is prevented from entering between the outer surface and the outer surface, only the top surface of the convex portion and the bottom surface of the concave portion are in contact with each other.
For this reason, for example, when traveling for a long distance, the rubber on the inner surface of the concave portion of the functional component mounting base wears due to friction between the outer surface of the functional component side mounting portion and the inner surface of the concave portion of the functional component mounting base. Since the generated wear powder accumulates between the outer surface of the functional part mounting part and the inner surface of the concave part of the functional part mounting base, air enters from the gap generated, so the functional part mounting part is fixed to the base. Therefore, there is a possibility that the differential pressure sufficient to do this cannot be obtained, and the functional component side mounting portion cannot be firmly fixed to the concave portion of the functional component mounting base.
In the present invention, even if a gap is generated between the outer surface of the functional component side mounting portion and the inner surface of the concave portion of the functional component mounting member (functional component mounting base), the functional component side mounting portion of the functional component is mounted on the functional component. A functional component device that is firmly fixed to a member is provided.

The functional component device according to the present invention includes a functional component, a concave portion for mounting the functional component-side mounted portion of the functional component in a fitted state, and a bottom surface that is attached to the inner surface of the tire so as to face the inner bottom portion of the concave portion. A functional component mounting member made of rubber having a flat surface provided at the bottom of the functional component-side mounted portion and an inner bottom portion of the concave portion on the flat surface. Since the concave surface provided on the inner bottom part of the concave part of the functional part mounting member is sucked to the plane provided at the bottom part of the functional part side mounting part like a suction cup, the functional part side Even if a gap is generated between the outer surface of the mounted portion and the inner surface of the concave portion of the functional component mounting member, the functional component side mounted portion of the functional component is firmly fixed to the functional component mounting member.
Further, the top surface of the convex portion provided on the inner bottom portion of the concave portion is formed on the concave surface, and the bottom surface of the fitting concave portion provided on the bottom portion of the functional component side attached portion and fitting the convex portion is the Since it is formed in a flat surface, the concave surface formed on the top surface of the convex portion provided in the inner bottom portion of the concave portion is sucked into the flat surface that is the bottom surface of the fitting concave portion provided in the bottom portion of the functional component side attached portion. Therefore, even if a gap is generated between the outer surface of the functional component side mounted portion and the inner surface of the concave portion of the functional component mounting member, the functional component side mounted portion of the functional component becomes the functional component mounting member. It becomes firmly fixed.
In addition, the convex portion is formed by a cylindrical convex portion having a constant diameter, and the fitting concave portion is formed in a circular concave portion whose diameter is smaller than the diameter of the concave opening. When pressed so that the bottom surface of the concave portion and the top surface of the cylindrical convex portion are in close contact with each other, the top side of the cylindrical convex portion expands as the cylindrical convex portion is crushed, and the cylindrical convex portion Since the outer peripheral portion on the top side enters the peripheral side on the bottom surface side of the concave portion in the circular concave portion, a force is generated that restrains each other (circular concave portion, cylindrical convex portion) in the direction along the central axis of the functional component. It is firmly fixed by the functional component mounting member.

Sectional drawing of the tire which shows the state by which the functional component apparatus (functional component + functional component mounting base) was attached to the inner surface of the tire via the functional component mounting base (Embodiment 1). Sectional drawing which shows the functional component apparatus (functional component + functional component mounting base) attached to the inner surface of the tire (Embodiment 1). Sectional drawing which shows a functional component (Embodiment 1). Sectional drawing which shows a functional component mounting base (Embodiment 1). The perspective view which looked at the functional component side to-be-attached part from the bottom face side (embodiment 1). The perspective view (partial cross section) which shows a functional component mounting base (Embodiment 1).

  Hereinafter, the present invention will be described in detail through embodiments of the invention. However, the following embodiments do not limit the invention according to the claims, and all combinations of features described in the embodiments are included in the invention. It is not necessarily essential to the solution, but includes a configuration that is selectively adopted.

Embodiment 1
As shown in FIGS. 1 and 2, the functional component device 50 according to the first embodiment has a functional component 29 and a recess 2 </ b> A for mounting the functional component-side mounted portion 30 of the functional component 29 in a fitted state. A functional component mounting base 1 as a functional component mounting member made of rubber having a mounting portion 2 and a bottom surface 4 mounted on the inner surface 70 of the tire 60 so as to face the inner bottom portion of the recess 2A. .

For example, the functional component 29 has a configuration in which detection means (not shown) is mounted in order to detect the state of the tire 60, and specifically, a sensor (pressure) as detection means (not shown) attached to the mounting board. Sensors, temperature sensors, acceleration sensors, etc.), batteries or power generation elements, sensor modules in which the periphery of components such as radio devices is solidified with resin, or components mounted with a power generation device (generator).
The functional component 29 includes, for example, a functional component-side attached portion 30 made of resin and a protruding portion 37 formed so as to protrude from the functional component-side attached portion 30, and the functional component-side attached portion 30 and the protruding portion. Since the above-described components such as the sensor are incorporated in at least one of 37, for example, a configuration having a function for measuring the temperature, pressure, and the like in the tire 60, or a power generator (generator) ) Is attached.

  As shown in FIG. 1, the tire 60 includes a carcass 60 </ b> A, a belt 61, a tread portion 62, a bead portion 63, a sidewall portion 64, and a shoulder portion 65. The carcass 60A is disposed such that a plurality of cord layers laminated from the inner surface 70 side of the tire 60 toward the outer surface 71 side of the tire 60 straddle between the pair of bead portions 63, 63 in a toroidal shape. The multiple layers on the side are turn-up plies whose ends are folded back from the inner side in the tire width direction to the bead core 66 of the bead portion 63, and the multiple layers on the outer layer side are the bead cores 66 of the bead portion 63 at both ends. On the other hand, it is a down ply that is folded back from the outside in the tire width direction. The belt 61 is provided between the carcass 60 </ b> A and the tread portion 62. The tread portion 62 is disposed outside the carcass 60 </ b> A and the belt 61 in the tire radial direction. A plurality of circumferential main grooves 67 extending in the tire circumferential direction are formed on the surface of the tread portion 62.

Next, the functional component side attached portion 30 provided in the functional component 29 will be described with reference to FIGS.
The functional component side mounted portion 30 is shaped to be fitted into the recess 2A of the mounting portion 2 of the functional component mounting base 1, for example, a short axis of a rounded rectangle (Rounded Rectangle) with a rotation axis (functional component side mounted portion) It is formed in a shape like a rotating body obtained as 30 central axes 30X).
The functional component side attached portion 30 is a side surface connecting the bottom portion that contacts the inner bottom surface of the concave portion 2A, the top portion facing the bottom portion, and the bottom portion and the top portion when fitted to the concave portion 2A of the attaching portion 2. (Outer peripheral surface).
The side surface of the functional component side attached portion 30 is formed into an arcuate surface 31 that curves so as to protrude in a direction away from the central axis 30X along the central axis 30X of the functional component side attached portion 30. In other words, the side surface of the functional component side attached portion 30 is an arcuate surface 31 that is curved so that the cross-sectional shape along the central axis 30X of the functional component side attached portion 30 protrudes in a direction away from the central axis 30X. is there.
The bottom of the functional component side attached portion 30 is centered on an annular surface 32 centered on the central axis 30X of the functional component side attached portion 30 and a central axis 30X provided inside the annular surface 32. It comprises a circular recess 33 as a fitting recess (see FIG. 5).
The circular recess 33 is inclined so that the recess wall surface 33e that connects the periphery 33b of the recess bottom surface 33a and the periphery 33d of the recess opening 33c approaches the central axis 30X from the top side to the bottom side of the functional component side attached portion 30. Formed on the inclined surface. That is, the circular recess 33 is formed in a recess having a recess bottom surface 33a corresponding to the bottom surface of the truncated cone and a recess wall surface 33e corresponding to the outer peripheral surface (side surface) of the truncated cone. That is, the concave wall surface 33e of the circular concave portion 33 is formed such that the diameter dimension of the inner periphery gradually decreases as it approaches the bottom surface 4, and the diameter 33B of the concave bottom surface 33a is larger than the diameter 33A of the concave opening 33c. (See FIG. 3).
The top part of the functional component side attached part 30 has an annular flat surface 36 centering on the central axis 30 </ b> X covered with the opening edge 3 a of the opening 3 of the recess 2 </ b> A of the attaching part 2. And the protrusion part 37 extended in the direction opposite to a bottom part from the said flat surface 36 is provided. The projecting portion 37 is used as a portion in which components such as the sensor described above are incorporated, a handle portion when the functional component side attached portion 30 is attached to the recessed portion 2A of the attaching portion 2, and the like.
That is, as shown in FIG. 3, the functional component side mounted portion 30 has a diameter dimension (centering on the central axis 30 </ b> X) of the central portion (the central portion of the side surface (arc surface 31)) along the central axis 30 </ b> X. The outer diameter dimension of the functional component side mounted portion 30, which is the length in the direction orthogonal to the central axis 30 </ b> X), is larger than the radial dimension of both ends (bottom and top) in the direction along the central axis 30 </ b> X. It is formed with a maximum diameter of 30A, which is a large dimension.

Next, the functional component mounting base 1 will be described with reference to FIGS.
The mounting part 2 of the functional component mounting base 1 has a concave portion 2A corresponding to the shape of the functional component-side mounted portion 30, and the functional component-side mounted portion 30 inserted into the concave portion 2A is the functional component mounting base 1 of the functional component mounting base 1. It is configured to be fitted into the recess 2A by rubber elasticity.
The concave portion 2A into which the functional component side attached portion 30 is fitted includes a circular opening 3 serving as an entrance for inserting and removing the functional component side attached portion 30 with respect to the concave portion 2A, and an inner bottom portion facing the opening 3. And an inner wall surface 9 that connects the opening 3 and the inner bottom portion.
The recess 2 </ b> A is formed such that the diameter 3 </ b> A of the opening 3 is smaller than the maximum diameter 30 </ b> A of the functional component side attached portion 30, and the inner surface (inner bottom surface and inner wall surface 9) is the outer surface of the functional component side attached portion 30. It is formed in the fitting surface which fits (bottom part, side surface, and top part).
That is, the concave portion 2A has the shape of the functional component side attached portion 30, for example, a shape like a rotating body obtained by using a short axis of a rounded rectangle as a rotation axis (a central axis 2X of the concave portion 2A). Is formed in the recess.
The inner wall surface 9 of the recess 2A has a diameter dimension of the center portion in the direction along the center axis 2X of the recess 2A (inner diameter dimension of the recess 2A having a length in a direction perpendicular to the center axis 2X with the center axis 2X as a center). Is formed to have a maximum diameter 9A that is larger than the diameter 3A of the opening 3 of the recess 2A and the diameter of the inner bottom portion of the recess 2A. That is, the concave portion 2A has a diameter 3A of the opening 3 serving as an entrance for inserting / removing the functional component side attached portion 30 so that the maximum diameter 30A of the functional component side attached portion 30 corresponds to the maximum diameter 30A. Is smaller than 9A. That is, the functional component side attached portion 30 having the opening 3 expanded in diameter and inserted into the recess 2A is covered with the rubber on the opening edge 3a side and the functional component side inserted into the recess 2A. The mounted portion 30 is configured to be pressed and kept in the fitted state by the elastic force of the rubber of the functional component mounting base 1 toward the inner bottom portion side of the recess 2A.

Further, the inner bottom portion of the recess 2A is formed in an uneven portion that fits the surface of the uneven portion (circular recess 33, annular surface (convex portion) 32) formed on the bottom portion of the functional component side attached portion 30. Yes.
That is, as shown in FIGS. 4 and 6, the inner bottom portion of the recess 2 </ b> A has a columnar convex portion 5 as a convex portion that fits into a circular concave portion 33 formed on the bottom portion of the functional component side attached portion 30, and It is the structure provided with the annular recessed part 7 by which the bottom part of the side surface (arc surface 31) which continues to the annular surface 32 and the said annular surface 32 is fitted.
The columnar convex portion 5 is formed in a columnar shape having the central axis 2X of the concave portion 2A as a central axis, and a top surface 5t facing the concave portion bottom surface 33a of the circular concave portion 33 is formed as a concave surface. The outer peripheral surface of the cylindrical convex portion 5 is a cylindrical outer peripheral surface 5a extending in parallel along the central axis 2X. That is, the columnar convex portion 5 is a columnar convex portion having a constant diameter.
In addition, the bottom surface 4 of the functional component mounting base 1 functions as a fixing portion that is fixed to the inner surface 70 of the tire 60 via an adhesive. The bottom surface 4 is formed of, for example, a circular surface centered on the central axis 2X of the recess 2A, and the diameter of the circular surface is larger than the maximum diameter 9A of the recess 2A. The bottom surface 4 is formed on a plane orthogonal to the central axis 2X of the recess 2A.
The outer wall surface 10 of the functional component mounting base 1 is formed as an inclined surface that connects the opening edge 3 a of the opening 3 and the outer peripheral edge 4 a of the bottom surface 4. The inclined surface is formed such that the opening edge 3a side of the opening 3 and the outer peripheral edge 4a side of the bottom surface 4 are formed as gentle slopes, and the central part in the direction along the central axis 2X is formed as a steep slope. The thickness of the rubber on the opening edge 3 a side of the opening 3 and the outer peripheral edge 4 a side of the bottom surface 4 is configured to be thin. As described above, the thickness of the rubber on the opening edge 3a side of the opening 3 is configured to be thin, so that the diameter of the opening 3 is increased when the functional component side attached portion 30 is fitted into the recess 2A. Work becomes easier. In addition, since the thickness of the rubber on the outer peripheral edge 4a side of the bottom surface 4 is reduced, the adhesion between the outer peripheral edge 4a side and the inner surface 70 of the tire 60 is increased, and peeling from the outer peripheral edge 4a is prevented. It is suppressed.

When attaching the functional component side attached portion 30 to the recess 2A, the opening 3 of the functional component attachment base 1 is expanded and the functional component side attached portion 30 is inserted into the recessed portion 2A of the attachment portion 2 to Concave and convex portions (circular concave portion 33, annular surface (convex portion) 32) formed on the bottom portion of the attachment portion 30 and concave and convex surfaces (cylindrical convex portion 5 and annular concave portion 7) formed on the inner bottom portion of the attachment portion 2 , The functional component 29 is attached to the concave portion 2A of the functional component mounting base 1 in a fitted state.
The functional component mounting base 1 is positioned on the inner surface 70 of the tire 60 so that the central axis 2X of the mounting portion 2 and the equator plane 60X of the tire 60 coincide with each other as shown in FIG. And the inner surface 70 of the tire 60 are attached to the inner surface 70 of the tire 60 by being bonded by an adhesive or the like.
In addition, after the functional component 29 comprises the functional component apparatus 50 attached to the functional component mounting base 1, the bottom surface 4 of the functional component mounting base 1 and the inner surface 70 of the tire 60 in the functional component apparatus 50 are bonded with an adhesive or the like. The functional component is attached to the recess 2A of the functional component mounting base 1 attached to the inner surface 70 of the tire 60 after the bottom surface 4 of the functional component mounting base 1 and the inner surface 70 of the tire 60 are bonded with an adhesive or the like. By attaching 29, the functional component 29 is attached to the inner surface 70 of the tire 60 via the functional component mounting base 1 (see FIG. 2). In FIG. 2, R indicates the rotation direction (rolling direction) of the tire 60.

According to the functional component device 50 of the first embodiment, the surface shape of the top surface 5t of the cylindrical convex portion 5 as the convex portion provided on the inner bottom portion of the concave portion 2A of the functional component mounting base 1, and the functional component side mounted The surface shape of the concave bottom surface 33a of the circular concave portion 33 as the fitting concave portion that is formed on the bottom portion of the portion 30 and is fitted to the cylindrical convex portion 5 is not matched. For example, in Embodiment 1, the surface shape of the recess bottom surface 33a is formed on a plane orthogonal to the central axis 2X, and the surface shape of the top surface 5t of the cylindrical protrusion 5 before assembly is recessed toward the bottom surface 4 side, That is, it was configured like a suction cup.
Accordingly, when the concave bottom surface 33a of the circular concave portion 33 and the top surface 5t of the cylindrical convex portion 5 are pressed so as to be in close contact, the top surface 5t formed in the concave shape of the cylindrical convex portion 5 is like a suction cup. Since it attracts | sucks to the recessed part bottom face 33a formed in the plane of the circular recessed part 33, it is not only a fitting surface with the outer peripheral surface of the functional component side to-be-attached part 30, and the inner wall surface 9 of the recessed part 2A of the functional component mounting base 1, but a function. An attracting force is also generated on the fitting surface between the concave bottom surface 33a at the bottom of the component-side mounted portion 30 and the top surface 5t of the inner bottom of the concave portion 2A of the functional component mounting base 1. As a result, by any chance, wear powder is generated between the outer peripheral surface of the functional component-side mounted portion 30 and the inner wall surface 9 of the concave portion 2A of the functional component mounting base 1, and a gap is generated, and air flows from the gap. However, since the bottom surface 33a of the concave portion at the bottom of the functional component side mounting portion 30 and the top surface 5t of the inner bottom portion of the functional component mounting base 1 are adsorbed by the differential pressure, the functional component side covering attached to the concave portion 2A The fixing force of the mounting portion 30 is maintained, the bonding strength between the functional component 29 and the functional component mounting base 1 is increased, and the functional component 29 is firmly fixed to the functional component mounting base 1.
When attaching the functional component side mounted portion 30 of the functional component 29 to the concave portion 2A of the functional component mounting base 1, by attaching the air in the concave portion 2A to the outside of the concave portion 2A, the top surface 5t becomes the suction cup. Thus, since it becomes easy to stick by the recessed part bottom face 33a, the coupling strength between the functional component 29 and the functional component mounting base 1 can be further increased. In this case, for example, the functional component mounting base 1 and the functional component 29 are installed in the hermetic chamber, and a special jig or the like is used while the air in the hermetic chamber is sucked out of the hermetic chamber by a suction pump or the like to decompress the hermetic chamber. Then, the attachment work of the functional component side attached portion 30 to the recess 2A may be performed.

  Further, since the cylindrical convex portion 5 having a constant diameter and the circular concave portion 33 having a diameter 33B of the concave bottom surface larger than the diameter 33A of the concave opening are provided, the concave bottom surface 33a of the circular concave portion 33 is provided. When pressed so that the top surface 5t of the columnar convex portion 5 is in close contact, the columnar convex portion 5 is crushed in the direction in which the columnar convex portion 5 approaches the bottom surface 4 of the functional component mounting base 1. The diameter of the top side of is increased. That is, the outer peripheral portion on the top side of the cylindrical convex portion 5 enters the peripheral edge 33b side of the circular concave portion 33 on the concave bottom surface 33a side so that the shape of the cylindrical convex portion 5 matches the shape of the circular concave portion 33 (each other Deforms to fit. Therefore, the restraint between the surfaces of the concave wall surface 33e of the circular concave portion 33 and the outer peripheral surface 5a of the cylindrical convex portion 5 is strengthened, and the mutual concave portions wall surface 33e and outer peripheral surface 5a are arranged in the direction along the central axes 30X and 2X. Since the restraining force is generated, the fixing force of the functional component side attached portion 30 attached to the recess 2A is increased, the coupling strength between the functional component 29 and the functional component mounting base 1 is further increased, and the functional component 29 functions. It is firmly fixed by the component mounting base 1.

Embodiment 2
According to the first embodiment, the columnar convex portion 5 is provided at the inner bottom portion of the functional component mounting base 1, and the circular concave portion 33 that is fitted to the columnar convex portion 5 is provided at the bottom portion of the functional component side attached portion 30. However, without providing the cylindrical convex portion 5 and the circular concave portion 33, the flat surface provided at the bottom of the functional component-side mounted portion 30 and the inner bottom portion of the concave portion 2A of the functional component mounting base 1 are provided. It may be a functional component device that is provided with a concave surface that is provided and adsorbs to the plane.
Even in the case of the configuration, the concave surface provided in the inner bottom portion of the concave portion 2A of the functional component mounting base 1 is attracted to the flat surface provided in the bottom portion of the functional component-side attached portion 30, so that the same as in the first embodiment described above. This is because an effect can be obtained.

  The functional component device 50 of the present invention may be attached anywhere on the inner surface 70 of the tire 60.

  The functional component 29 is a configuration in which electronic components and devices such as various sensors that detect the state of tire air pressure, temperature, acceleration, and the like, batteries or power generation elements and power generation devices, radios, heating elements, and pumps are individually mounted, or A configuration in which two or more of these electronic components and devices are mounted, and includes a functional component side mounted portion 30 and a protruding portion 37 formed so as to protrude from the functional component side mounted portion 30. If it is.

  The functional component side mounted portion 30 is a rotating body having a side surface formed with a diameter larger than the diameter of both ends (bottom, top) in the direction along the central axis 30X, or a column, Alternatively, it may be a shape such as a disk body, for example, a spheroid obtained by using the minor axis of the ellipse as a rotation axis (center axis), a cylinder, or a disk body.

1 functional component mounting base (functional component mounting member), 2A recess,
4 bottom of functional component mounting base, 5 cylindrical convex part (convex part),
5t Top surface (concave surface) of cylindrical convex portion, 29 functional component, 30 functional component side mounted portion,
33 circular recess (fitting recess), 33a bottom surface (plane) of the circular recess,
50 functional parts device, 60 tires,
70 Inner surface of tire, R Rotation (rolling) direction of tire.

Claims (3)

Functional parts,
A functional part mounting member made of rubber having a concave part for attaching the functional part side attached part of the functional part in a fitted state and a bottom face facing the inner bottom part of the concave part and attached to the inner surface of the tire; A functional component device comprising:
A plane provided at the bottom of the functional part side mounted portion;
A concave surface provided on the inner bottom of the concave portion and adsorbed on the flat surface;
A functional component device comprising: The top surface of the convex portion provided on the inner bottom portion of the concave portion is formed on the concave surface,
2. The functional component device according to claim 1, wherein a bottom surface of a fitting concave portion provided on a bottom portion of the functional component-side attached portion and fitting the convex portion is formed on the flat surface. The convex part is formed by a cylindrical convex part having a constant diameter,
The functional component device according to claim 2, wherein the fitting recess is formed in a circular recess having a diameter of a bottom surface of the recess larger than a diameter of the opening of the recess.

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