JP7420156B2 - Exterior parts, cases and watches - Google Patents

Description

The present invention relates to an exterior member used for an electronic device such as a wristwatch or a personal digital assistant, a case equipped with the same, and a watch equipped with the same.

For example, in the case of an exterior member for a wristwatch, as described in Patent Document 1, carbon fiber is used as a reinforcing material, and the carbon fibers are laminated in the front and back directions to form a carbon fiber reinforced resin sheet. A structure in which a thermosetting resin is provided on the front and back surfaces of a fiber-reinforced resin sheet is known.

Japanese Patent Application Publication No. 2005-114495

The exterior members of such wristwatches have a structure in which thermosetting resin is provided on the front and back surfaces of a carbon fiber reinforced resin sheet in which carbon fibers are laminated in the front and back directions, so even if weight reduction can be achieved, There is a problem that sufficient strength cannot be obtained and impact resistance cannot be ensured.

The problem to be solved by this invention is to provide an exterior member that can increase strength and improve impact resistance, a case equipped with the same, and a watch equipped with the same.

This invention includes a first fiber-reinforced resin body in which a plurality of first fiber-reinforced resin sheets are laminated, and a second fiber-reinforced resin body in which a plurality of second fiber-reinforced resin sheets are laminated. , wherein the first fiber-reinforced resin sheet of the first fiber-reinforced resin body is laminated at an angle with respect to the second fiber-reinforced resin sheet of the second fiber-reinforced resin body. This is an exterior member.

According to this invention, strength can be increased and impact resistance can be improved.

1 is an enlarged perspective view showing an embodiment of a wristwatch to which the present invention is applied. FIG. 2 is an enlarged cross-sectional view of the main parts of the wristwatch shown in FIG. 1 taken along the line AA. FIG. 2 is an enlarged perspective view showing a second exterior member in the exterior member of the wristwatch shown in FIG. 1; FIG. 4 is an enlarged perspective view of the main part of the second exterior member shown in FIG. 3, cut away in the direction of the arrow BB. 4 is an enlarged perspective view showing a pattern formed by a glass fiber layer in the first fiber-reinforced resin body of the second exterior member shown in FIG. 3. FIG.

An embodiment in which the present invention is applied to a wristwatch will be described below with reference to FIGS. 1 to 5.
This wristwatch includes a wristwatch case 1, as shown in FIG. Band attachment portions 2 to which watch bands (not shown) are attached are provided on the 12 o'clock side and the 6 o'clock side of the wristwatch case 1, respectively.

As shown in FIG. 1, switch buttons 3 are provided on the 2 o'clock side, 3 o'clock side, 4 o'clock side, 8 o'clock side, and 10 o'clock side of this wristwatch case 1, respectively. Further, as shown in FIG. 2, a watch glass 4 is attached to the upper opening of the wristwatch case 1 via a packing 4a. A watch module (not shown) is provided inside the watch case 1 .

This wristwatch case 1 includes a case body 5 and an exterior member 6, as shown in FIGS. 1 and 2. The case body 5 includes an outer case 7 and an inner case 8. The outer case 7 is made of metal such as stainless steel and has a substantially ring shape. Band attachment portions 2 are provided on the 12 o'clock side and the 6 o'clock side of the outer case 7. The inner case 8 is formed of hard synthetic resin into a substantially cylindrical shape and has a bottom portion 8a corresponding to a back cover.

In this case, as shown in FIG. 2, the inner case 8 is formed so that its outer diameter is approximately the same as the inner diameter of the outer case 7, and its length in the vertical direction is longer than the length in the vertical direction of the outer case 7. It is formed by length. The side wall portion of this inner case 8 is provided with a convex portion 8b. When the inner case 8 is placed in the outer case 7, the convex portion 8b is inserted into and engaged with the recess 7a provided in the inner wall of the outer case 7, so that the inner case 8 is inserted into the outer case 7. It is constructed so that it does not slip out below.

The exterior member 6 includes a first exterior member 10 and a second exterior member 11, as shown in FIGS. 1 and 2. The first exterior member 10 is made of metal such as stainless steel and has a substantially ring shape as a whole. The first exterior member 10 includes a ring-shaped plate portion 10a disposed straddling the upper end surface of the outer case 7 and the upper end surface of the inner case 8, and a watch glass provided on the inner peripheral portion of the plate portion 10a. 4 is fitted with a cylindrical portion 10b through a packing 4a.

In this case, a waterproof ring 9 is provided between the lower surface of the plate portion 10a of the first exterior member 10 and the upper end surface of the inner case 8, as shown in FIG. Furthermore, a regulating portion 10c that comes into contact with the inner circumferential surface of the inner case 8 is provided at the inner circumferential end of the plate portion 10a of the first exterior member 10. As a result, in the first exterior member 10, when the plate portion 10a is disposed astride the upper end surface of the outer case 7 and the upper end surface of the inner case 8 via the waterproof ring 9, the regulating portion 10c is The radial position of the first exterior member 10 is restricted by coming into contact with the inner circumferential surface of the first exterior member 10 .

As shown in FIGS. 1 and 2, the second exterior member 11 is formed into a substantially ring shape from a fiber material to be described later, and is configured to be placed on the plate portion 10a of the first exterior member 10. . That is, the second exterior member 11 has an inner diameter that is the same size as the outer diameter of the cylindrical portion 10b of the first exterior member 10, and an outer diameter of the second exterior member 11 that is equal to the outer diameter of the plate portion 10a of the first exterior member 10. It is formed to be approximately the same size as the outer diameter of.

Further, as shown in FIG. 2, the second exterior member 11 has a length (thickness) in the vertical direction that is slightly shorter (lower) than the length in the vertical direction of the cylindrical portion 10b of the first exterior member 10. It is formed by As a result, the second exterior member 11 is placed on the plate portion 10a of the first exterior member 10 with its upper surface slightly lower than the upper end of the cylindrical portion 10b of the first exterior member 10. For this reason, the first exterior member 10 is configured so that the upper end of the cylindrical portion 10b receives the impact from above, and the upper surface of the second exterior member 11 does not receive the impact from above.

As shown in FIG. 2, the second exterior member 11 is connected to the first exterior member 10 by a plurality of screw members 12, which are fastening members, which will be described later, while being arranged on the plate portion 10a of the first exterior member 10. It is configured to be attached to the case body 5. That is, in this wristwatch case 1, the inner case 8 is disposed within the outer case 7, the first exterior member 10 is disposed on each upper surface of the outer case 7 and the inner case 8, and the plurality of screw members 12 The second exterior member 11 is configured to be attached to the outer case 7 by sandwiching the first exterior member 10 therebetween.

By the way, as shown in FIGS. 1 to 4, the second exterior member 11 is formed into a substantially ring shape as a whole by the first fiber-reinforced resin body 13 and the second fiber-reinforced resin body 14. The first fiber-reinforced resin body 13 is made by laminating a plurality of first fiber-reinforced resin sheets. This first fiber reinforced resin sheet is a glass fiber layer S1 which is a glass fiber reinforced resin sheet using glass fiber as a reinforcing material.

In this case, the first fiber-reinforced resin body 13 has a glass fiber layer S1, which is a first fiber-reinforced resin sheet, in the front and back directions of the first fiber-reinforced resin body 13, as shown in FIGS. This is a glass fiber reinforced resin sheet body (GFRP) that is laminated at a predetermined inclination angle θ in a direction perpendicular to a certain thickness direction. The first fiber-reinforced resin body 13 has a surface portion 13a and a side surface portion 13b, and has a substantially eave-shaped cross-sectional shape (inverted L-shape).

That is, as shown in FIGS. 4 and 5, the first fiber-reinforced resin body 13 includes a glass fiber layer S1, which is a glass fiber-reinforced resin sheet made of glass fibers hardened with epoxy resin. A predetermined inclination angle θ in the direction perpendicular to the thickness direction, which is the direction of the front and back surfaces of It has a layered structure. In this case, the glass fiber layer S1, which is the first fiber-reinforced resin sheet of the first fiber-reinforced resin body 13, is inclined in the 3 o'clock and 9 o'clock directions of the wristwatch case 1.

That is, band attachment parts 2 are provided on the 12 o'clock side and the 6 o'clock side of the wristwatch case 1, and a watch band (not shown) is attached to these band attachment parts 2. For this reason, external forces applied to the wristwatch case 1 are often applied from the 3 o'clock side and the 9 o'clock side. Taking this into consideration, the glass fiber layer S1 is configured to increase its strength by stacking the glass fiber layers at a predetermined angle of inclination θ in the 3 o'clock and 9 o'clock directions.

In such a structure, when an external force is applied in the direction of the front and back surfaces of the first fiber reinforced resin body 13, a shearing force that causes the glass fiber layers S1 to separate from each other is applied, so that the first fiber reinforced resin body 13 The strength against external forces in the front and back directions is low. In this case, by tilting each glass fiber layer S1 with respect to the front and back directions of the first fiber reinforced resin body 13, the bonding area of the interface between the glass fiber layers S1 is increased by the tilt angle θ. The structure is such that the bonding strength at the interface between the glass fiber layers S1 is increased.

In this case, as shown in FIG. It is preferable that it be inclined at an angle of 30° to 70°, for example, at an angle of 45° with respect to the back surface direction (thickness direction). Therefore, the first fiber-reinforced resin body 13 has a decorative effect and is visible from the outside by exposing each end face of a large number of laminated glass fiber layers S1 to the outer surfaces of the front surface part 13a and the side face part 13b. It is structured to enhance the design.

That is, as shown in FIG. 5, on the surface portion 13a of the first fiber-reinforced resin body 13, each end surface of a large number of glass fiber layers S1 is parallel to each other along a straight line connecting, for example, 12 o'clock and 6 o'clock. It looks like stripes arranged in a straight line. Further, on the side surface portion 13b of the first fiber-reinforced resin body 13, each end surface of a large number of glass fiber layers S1 is arranged in a straight line parallel to each other while being inclined at a predetermined inclination angle θ, for example, an angle of 45°. It looks like a line of stripes. In this case, on the side surfaces 13b on the 3 o'clock side and the 9 o'clock side, each end surface of a large number of glass fiber layers S1 is arranged in a straight line parallel to each other along the front and back surface directions of the first fiber reinforced resin body 13. It looks like stripes.

Moreover, as shown in FIG. 5, in this first fiber-reinforced resin body 13, each end face of a large number of laminated glass fiber layers S1 is colored so as to express a striped color pattern as a whole. . That is, when the glass fibers are hardened with epoxy resin, a pigment is mixed into the epoxy resin, so that the many glass fiber layers S1 are individually colored in different colors, that is, each glass fiber layer S1 is made of different colors. colored in different colors.

On the other hand, the second fiber-reinforced resin body 14 is made by laminating a plurality of second fiber-reinforced resin sheets, as shown in FIG. That is, this second fiber reinforced resin sheet is a carbon fiber layer S2 which is a carbon fiber reinforced resin sheet using carbon fiber as a reinforcing material. In this case, the second fiber-reinforced resin body 14 is a carbon fiber layer made by laminating carbon fiber layers S2, which are a plurality of second fiber-reinforced resin sheets, in the thickness direction, which is the front and back surface direction of the second fiber-reinforced resin body 14. It is a fiber reinforced resin sheet body (CFRP) and has a substantially square cross-sectional shape.

That is, as shown in FIG. 4, this second fiber-reinforced resin body 14 has a carbon fiber layer S2, which is a carbon fiber-reinforced resin sheet made of carbon fibers hardened with epoxy resin, on the surface of the second fiber-reinforced resin body 14. Since a large number of layers are stacked in the back direction (thickness direction), the compressive strength in the thickness direction and the tensile strength in the surface direction are higher than those of the first fiber reinforced resin body 13.

In other words, the second fiber-reinforced resin body 14 has a structure in which carbon fiber layers S2 are laminated in the front and back directions of the second fiber-reinforced resin body 14, as shown in FIG. The body 13 has a structure in which glass fiber layers S1 are laminated at a predetermined inclination angle θ, for example, at an angle of 45° in a direction perpendicular to the front and back directions of the first fiber reinforced resin body 13.

Therefore, as shown in FIG. 4, the second fiber-reinforced resin body 14 has a bonding area at the interface of the carbon fiber layer S2 that is larger than a bonding area at the interface of the glass fiber layer S1 of the first fiber-reinforced resin body 1. Broadly speaking, the bonding strength at the interface of the carbon fiber layer S2 is higher than the bonding strength at the interface of the glass fiber layer S1 of the first fiber reinforced resin body 1. As a result, the second fiber reinforced resin body 14 has higher compressive strength in the thickness direction and tensile strength in the plane direction than the compressive strength in the thickness direction and tensile strength in the plane direction of the first fiber reinforced resin body 13. It is formed.

As shown in FIG. 4, this second fiber-reinforced resin body 14 is located on the back side of the first fiber-reinforced resin body 13, that is, on the lower surface of the front surface portion 13a and the side surface portion 13b of the first fiber-reinforced resin body 13. It is placed on the inner surface and firmly joined by thermocompression bonding. That is, the first fiber reinforced resin body 13 and the second fiber reinforced resin body 14 are the same as the epoxy resin of the glass fiber layer S1 in the glass fiber reinforced resin sheet body (GFRP) which is the first fiber reinforced resin body 13. , and the epoxy resin of the carbon fiber layer S2 in the carbon fiber reinforced sheet body (CFRP) which is the second fiber reinforced resin body 14 are melted and fixed to each other by thermocompression bonding, so that they are firmly joined.

In this case, as shown in FIG. 4, the second fiber-reinforced resin body 14 is formed so that its thickness in the front and back directions is thicker than the thickness of the surface portion 13a of the first fiber-reinforced resin body 13. The lower surface of the fiber-reinforced resin body 14 is arranged on the same plane as the lower end surface of the side surface portion 13b of the first fiber-reinforced resin body 13. As a result, the second fiber-reinforced resin body 14 has a structure in which it overlaps the back side of the first fiber-reinforced resin body 13 and is integrally joined to the first fiber-reinforced resin body 13.

Further, the second fiber-reinforced resin body 14 has a main body portion 14c and a plurality of attachment protrusions 14a, as shown in FIGS. 1 to 5. The main body portion 14c is generally formed into a ring shape as a whole. The plurality of attachment protrusions 14a are provided with first fiber reinforcement on each side of a part of the main body 14c of the second fiber reinforced resin body 14, that is, the 1 o'clock side, the 5 o'clock side, the 7 o'clock side, and the 11 o'clock side. It is provided to protrude laterally from the side surface portion 13b of the resin body 13.

That is, each of the plurality of attachment protrusions 14a is formed in a cylindrical shape and protrudes from the main body 14c of the second fiber-reinforced resin body 14, as shown in FIGS. 1 to 5. Further, the plurality of attachment protrusions 14a are formed to have a thickness slightly thinner than the thickness of the second fiber-reinforced resin body 14.

In this case, as shown in FIGS. 1 and 3, the plurality of attachment protrusions 14a have approximately half of the circular shape protruding from the side surface 13b of the first fiber-reinforced resin body 13, and the other half of the circular shape in plan view. cuts into the second fiber-reinforced resin body 14, and is formed one step lower than the upper surface of the second fiber-reinforced resin body 14. In other words, the joint surface between the lower surface, which is the back surface of the surface portion 13a of the first fiber-reinforced resin body 13, and the upper surface, which is the front surface of the second fiber-reinforced resin body 14, is larger than the upper surface, which is the surface of the mounting protrusion 14a. It is provided at a high position in the thickness direction of the second fiber reinforced resin body 14.

Furthermore, as shown in FIGS. 1 to 3, semicircular notches 13c are provided in the side surface portion 13b of the first fiber-reinforced resin body 13, corresponding to each mounting protrusion 14a. Further, first screw insertion holes 14b into which the screw members 12 are inserted are provided in these mounting protrusions 14a so as to penetrate in the thickness direction, which is the direction of the front and back surfaces.

On the other hand, on both sides of the band attachment part 2 of the outer case 7 in the case body 5, that is, on the 1 o'clock side, 5 o'clock side, 7 o'clock side, and 11 o'clock side of the outer case 7, as shown in FIGS. A screw attachment hole 7b, which is an attachment hole to which the screw member 12 is attached, is provided in each of the holes. The plurality of screw attachment holes 7b are holes that are provided from the upper surface to the lower surface of the outer case 7 and do not penetrate vertically.

As shown in FIG. 2, each of the plurality of screw mounting holes 7b includes an upper non-threaded hole portion where a threaded groove is not provided, and a lower screwed hole portion where a threaded groove is provided, These are provided on the same axis. In this case, in the plate portion 10a of the first exterior member 10, the second screw insertion hole 10d into which the screw member 12 is inserted is connected to the screw attachment hole 7b of the outer case 7 and the first screw insertion hole 14b of the second exterior member 11. are provided correspondingly on the same axis.

As shown in FIGS. 1 and 2, the screw member 12 includes a head 12a, a neck 12b, and a threaded portion 12c. The head 12a is formed to have an outer diameter that is approximately the same as or slightly smaller than the outer diameter of each attachment protrusion 14a of the second fiber-reinforced resin body 14. Thereby, the head 12a is configured such that its outer peripheral surface does not come into contact with the inner peripheral surface of the semicircular notch 13c provided in the first fiber-reinforced resin body 13.

Further, as shown in FIGS. 1 and 2, the head 12a has a length in the axial direction, that is, a length in the thickness direction of the second exterior member 11, which is approximately the same as the thickness of the mounting protrusion 14a, The length is slightly shorter than the length from the upper surface of the mounting protrusion 14a to the upper surface of the second exterior member 11, that is, the upper surface of the surface portion 13a of the first fiber-reinforced resin body 13. Thereby, the head 12a is configured such that its upper surface does not protrude upward from the upper surface of the surface portion 13a of the first fiber-reinforced resin body 13.

As shown in FIG. 2, the neck portion 12b has an outer diameter slightly smaller than an inner diameter of the first screw insertion hole 14b of the mounting protrusion 14a. The neck portion 12b has an axial length, that is, a vertical length equal to the depth of the first screw insertion hole 14b of the mounting protrusion 14a and the depth of the second screw insertion hole 10d of the plate portion 10a of the first exterior member 10. It is formed a little longer than the sum of the length. Thereby, the neck portion 12b is configured such that when the head portion 12a is pressed against the mounting protrusion 14a, the lower end portion of the neck portion 12b is inserted into the non-threaded hole portion on the upper side of the screw attachment hole 7b. .

As shown in FIG. 2, the threaded portion 12c has an outer diameter slightly smaller than the outer diameter of the neck portion 12b, and an axial length that is equal to the lower screw hole portion of the screw mounting hole 7b of the outer case 7. The length is shorter than the length in the axial direction. Thereby, the threaded portion 12c is configured to be screwed into the threaded hole portion of the threaded mounting hole 7b through the non-threaded hole portion of the threaded mounting hole 7b. In this case, the threaded portion 12c is configured such that its lower end does not reach the bottom of the lower threaded hole portion of the threaded mounting hole 7b.

As a result, as shown in FIG. 2, the threaded member 12 has the threaded portion 12c connected to the second fiber-reinforced resin in the second exterior member 11 of the exterior member 6 with the exterior member 6 disposed on the case body 5. It is inserted from the first screw insertion hole 14b of the mounting protrusion 14a of the body 14 into the second screw insertion hole 10d of the first exterior member 10, and is screwed into the screw hole of the screw installation hole 7b of the outer case 7 and tightened. The exterior member 6 is configured to be attached to the case body 5 when the case body 5 is opened.

That is, as shown in FIG. 2, when the threaded portion 12c of this screw member 12 is screwed into the screw mounting hole 7b of the outer case 7 and tightened, the head 12a is attached to the second fiber-reinforced resin body 14. The second exterior member 11 is configured to reliably press the first exterior member 10 against the outer case 7 and firmly attach the exterior member 6 to the case body 5. .

In this case, as shown in FIG. 2, when the head 12a of the screw member 12 is tightened, the head 12a is pressed against the upper surface of the mounting protrusion 14a of the second fiber-reinforced resin body 14 and rotated. Even if the upper surface of the mounting protrusion 14a is located one level lower than the upper surface of the second fiber-reinforced resin body 14, that is, the lower surface of the surface portion 13a of the first fiber-reinforced resin body 13 and the second fiber-reinforced resin body 14 Since the joint surface with the upper surface is located at a higher position in the thickness direction of the second fiber-reinforced resin body 14 than the upper surface of the mounting protrusion 14a, the lower surface of the surface portion 13a of the first fiber-reinforced resin body 13 and the second The upper surface of the fiber-reinforced resin body 14 is configured so as not to separate from the upper surface of the fiber-reinforced resin body 14 due to rotation of the head 12a.

Further, as shown in FIGS. 1 and 2, the second exterior member 11 includes a plurality of layers provided on the 1 o'clock side, 5 o'clock side, 7 o'clock side, and 11 o'clock side of the second fiber reinforced resin body 14. When the mounting protrusion 14a is pressed against the outer case 7 of the case body 5 by the screw member 12, no shearing force is applied that would cause the carbon fiber layers S2 of the second fiber reinforced resin body 14 to separate from each other. Since a force is applied in a direction that compresses the carbon fiber layers S2, the structure is such that the strength of the plurality of attachment protrusions 14a in the second fiber reinforced resin body 14 is ensured.

For this reason, as shown in FIGS. 1 and 2, the second exterior member 11 has a plurality of mounting protrusions 14a even if the plurality of mounting protrusions 14a are pressed against the outer case 7 of the case body 5 by the screw member 12. The screw member 12 is configured to be securely and firmly attached to the outer case 7 without being damaged, and with increased strength against the tightening force of the screw member 12.

Further, as shown in FIG. 2, this screw member 12 has a threaded portion 12c that is screwed into the screw mounting hole 7b of the outer case 7 and is tightened, and a head portion 12a that is used for mounting the second fiber-reinforced resin body 14. When pressed against the protrusion 14a, the outer case 7 is pulled up toward the first exterior member 10, and the recess 7a of the outer case 7 pushes up the protrusion 8b of the inner case 8, so that the inner case 8 1 is pressed against the plate portion 10a of the exterior member 10, so that the exterior member 6 is reliably and firmly attached to the case body 5.

Next, the case of assembling this wristwatch case 1 will be explained.
In this case, first, the case body 5 is assembled. At this time, the inner case 8 made of hard synthetic resin is inserted from above into the outer case 7 made of metal such as stainless steel, and the protrusion 8b of the inner case 8 is engaged with the recess 7a of the outer case 7. As a result, the inner case 8 is attached to the outer case 7 without coming off downward, and the case body 5 is assembled.

In this state, the upper end surface of the outer case 7 is placed slightly lower than the upper end surface of the inner case 8. Then, a watch module (not shown) is installed inside the inner case 8 of the case body 5, and a plurality of switch buttons 3 are attached to the outer periphery of the case body 5. After this, the exterior member 6 is attached onto the case body 5. At this time, the watch glass 4 is previously fitted and attached together with the packing 4a into the cylindrical portion 10b of the first exterior member 10 made of metal such as stainless steel.

In this state, the waterproof ring 9 is disposed on the upper end surface of the inner case 8, and the plate portion 10a of the first exterior member 10 is disposed astride the upper end surface of the outer case 7 and the upper end surface of the inner case 8. At this time, the regulating portion 10c provided at the inner circumferential end of the plate portion 10a of the first exterior member 10 is brought into contact with the inner circumferential surface of the inner case 8. Thereby, the radial position of the first exterior member 10 is restricted, and the first exterior member 10 is arranged on the case body 5. At this time, each second screw insertion hole 10d of the first exterior member 10 corresponds to each screw attachment hole 7b of the outer case 7 on the same axis.

In this state, the second exterior member 11 is placed on the first exterior member 10. At this time, the second exterior member 11 is manufactured in advance. In this case, first, the first fiber-reinforced resin body 13 and the second fiber-reinforced resin body 14 of the second exterior member 11 are manufactured. That is, when manufacturing the first fiber-reinforced resin body 13, the glass fiber layer S1 made of glass fibers hardened with epoxy resin is tilted at a predetermined angle in a direction perpendicular to the front and back directions of the first fiber-reinforced resin body 13. A large number of layers are stacked at an angle of θ, for example, 45°, to form a substantially eave-shaped ring having a surface portion 13a and a side surface portion 13b.

When manufacturing the second fiber-reinforced resin body 14, carbon fiber layers S2 made of carbon fibers hardened with epoxy resin are laminated in the front and back directions of the second fiber-reinforced resin body 14, so that the cross-sectional shape is Form into a substantially square ring shape. Then, the second fiber reinforced resin body 14 is arranged on the lower surface of the surface portion 13a and the inner surface of the side surface portion 13b of the first fiber reinforced resin body 13, and the first fiber reinforced resin body 13 and the second fiber reinforced resin body 14 are bonded by thermocompression. The fiber-reinforced resin body 14 of

At this time, the epoxy resin of the glass fiber layer S1 in the glass fiber reinforced resin sheet body (GFRP) which is the first fiber reinforced resin body 13 and the carbon fiber reinforced sheet body (CFRP) which is the second fiber reinforced resin body 14 are used. The epoxy resin of the carbon fiber layer S2 is melted and firmly bonded to each other by thermocompression bonding. In this state, the lower surface of the second fiber-reinforced resin body 14 is arranged on the same plane as the lower end surface of the side surface portion 13b of the first fiber-reinforced resin body 13, and the second fiber-reinforced resin body 14 The first fiber-reinforced resin body 13 is formed integrally with the first fiber-reinforced resin body 13 so as to overlap with the back side of the first fiber-reinforced resin body 13 .

Then, the second exterior member 11, in which the first fiber-reinforced resin body 13 and the second fiber-reinforced resin body 14 are joined, is fitted into the outer periphery of the cylindrical portion 10b of the first exterior member 10. It is placed on the plate portion 10a of the member 10. In this state, each first screw insertion hole 14b of the plurality of mounting protrusions 14a provided on the second fiber reinforced resin body 14 of the second exterior member 11 is inserted into the first screw insertion hole 14b provided on the plate portion 10a of the first exterior member 10. The plurality of second screw insertion holes 10d are made to correspond to each other on the same axis.

In this state, the second exterior member is attached to the case body 5 together with the first exterior member 10 using a plurality of screw members 12. At this time, each screw portion 12c of the plurality of screw members 12 is inserted into the first exterior member from each first screw insertion hole 14b of the plurality of mounting protrusions 14a provided in the second fiber-reinforced resin body 14 of the second exterior member 11. The screws are inserted into the plurality of second screw insertion holes 10d provided in the plate portion 10a of the member 10, and the inserted screw portions 12c are screwed into the plurality of screw attachment holes 7b provided in the outer case 7 of the case body 5. and tighten.

Then, each head 12a of the plurality of screw members 12 is pressed against the plurality of attachment protrusions 14a of the second fiber-reinforced resin body 14, and the plate portion 10a of the first exterior member 10 is pressed against the outer case 7. At this time, since the second fiber-reinforced resin body 14 has a structure in which carbon fibers are laminated in the front and back directions of the second fiber-reinforced resin body 14, its strength is higher than that of the first fiber-reinforced resin body 13. Therefore, even if the mounting projection 14a of the second fiber reinforced resin body 14 is pressed against the outer case 7 by the head 12a of the screw member 12 via the first exterior member 10, the mounting projection 14a will be damaged. Therefore, the mounting strength of the second exterior member 11 is high, and the impact resistance can be improved.

In this case, even if the head 12a of the screw member 12 is pressed against the upper surface of the mounting protrusion 14a of the second fiber-reinforced resin body 14 and rotated when the head 12a of the screw member 12 is tightened, the mounting protrusion 14a is The upper surface is attached at a position one step lower than the upper surface of the second fiber-reinforced resin body 14, that is, the joint surface between the lower surface of the surface portion 13a of the first fiber-reinforced resin body 13 and the upper surface of the second fiber-reinforced resin body 14. Since it is located at a higher position in the thickness direction of the second fiber-reinforced resin body 14 than the upper surface of the protrusion 14a, the lower surface of the surface portion 13a of the first fiber-reinforced resin body 13 and the second Peeling from the upper surface of the fiber reinforced resin body 14 can be prevented.

That is, when the joint surface between the lower surface of the surface portion 13a of the first fiber-reinforced resin body 13 and the upper surface of the second fiber-reinforced resin body 14 is at the same height as the lower surface of the head 12a of the screw member 12, the screw When the head 12a of the member 12 is tightened and the lower surface of the head 12a is pressed against the upper surface of the mounting protrusion 14a of the second fiber reinforced resin body 14 and rotates, the first fiber reinforced resin body 13 There is a risk that the lower surface of the surface portion 13a and the upper surface of the second fiber reinforced resin body 14 may separate due to the rotation of the head 12a. Therefore, the joint surface between the lower surface of the surface portion 13a of the first fiber-reinforced resin body 13 and the upper surface of the second fiber-reinforced resin body 14 is located at a different position from the lower surface of the head 12a, that is, from the lower surface of the head 12a. It also needs to be in a high position.

Furthermore, when the heads 12a of the plurality of screw members 12 are pressed against the plurality of mounting protrusions 14a of the second fiber-reinforced resin body 14, the plate portion 10a of the first exterior member 10 pushes the waterproof ring 9 inside. While pressing against the upper end surface of the case 8, the outer case 7 is pulled up toward the plate portion 10a of the first exterior member 10. As a result, the concave portion 7a of the outer case 7 pushes up the convex portion 8b of the inner case 8, and presses the inner case 8 against the plate portion 10a of the first exterior member 10.

Therefore, the waterproof ring 9 is sandwiched and compressed between the plate part 10a of the first exterior member 10 and the inner case 8, and waterproofing between the plate part 10a of the first exterior member 10 and the inner case 8 is ensured. be done. Thereby, the exterior member 6 is securely and firmly attached to the case body 5, and the wristwatch case 1 is assembled.

Next, the function of such a wristwatch case 1 will be explained.
In this wristwatch case 1, the first fiber-reinforced resin body 13 of the second exterior member 11 has a glass fiber layer S1 formed by hardening glass fibers with epoxy resin in a direction perpendicular to the front and back directions of the first fiber-reinforced resin body 13. Since the structure is such that the glass fiber layers S1 are stacked at a predetermined angle θ, for example, 45°, each end face of the many glass fiber layers S1 is exposed on each outer surface of the front surface portion 13a and the side surface portion 13b and is visible from the outside. It turns out.

That is, as shown in FIG. 5, on the surface portion 13a of the first fiber-reinforced resin body 13, each end surface of a large number of glass fiber layers S1 is parallel to each other along a straight line connecting, for example, 12 o'clock and 6 o'clock. It looks like stripes arranged in a straight line. Further, on the side surface portion 13b of the first fiber-reinforced resin body 13, each end surface of a large number of glass fiber layers S1 is arranged in a straight line parallel to each other while being inclined at a predetermined inclination angle θ, for example, an angle of 45°. It looks like a line of stripes. In this case, each end surface of a large number of glass fiber layers S1 is formed in a straight line parallel to each other along the front and back surface directions of the first fiber reinforced resin body 13 on each side surface portion 13b on the 3 o'clock side and the 9 o'clock side. It looks like a line of stripes. Thereby, the first fiber-reinforced resin body 13 has improved decorativeness and design.

In this case, as shown in FIG. 5, the first fiber-reinforced resin body 13 is made of glass by mixing a pigment into the epoxy resin when solidifying glass fibers with epoxy resin to form the glass fiber layer S1. Each fiber layer S1 is colored in a different color. For this reason, the first fiber-reinforced resin body 13 is colored so that each end face of a large number of laminated glass fiber layers S1 has a striped color pattern as a whole. Thereby, the first fiber-reinforced resin body 13 is further enhanced in decorativeness and improved in design.

As described above, the second exterior member 11 of the wristwatch case 1 includes the first fiber-reinforced resin body 13 on which the glass fiber layers S1, which are the plurality of first fiber-reinforced resin sheets, are laminated, and the plurality of first fiber-reinforced resin sheets. a second fiber reinforced resin body 14 on which a carbon fiber layer S2, which is a second fiber reinforced resin sheet, is laminated, and the glass fiber layer S1 of the first fiber reinforced resin body 13 is made of a second fiber reinforced resin sheet. By laminating the carbon fiber layers at an angle with respect to the carbon fiber layer S2 of the body 14, it is possible to improve the design, and also to increase the strength and impact resistance.

That is, in this second exterior member 11, the glass fiber layer S1 of the first fiber reinforced resin body 13 is laminated at an angle with respect to the carbon fiber layer S2 of the second fiber reinforced resin body 14. The compressive strength in the thickness direction, which is the front and back surface direction, of the fiber-reinforced resin body 14 and the tensile strength in the plane direction of the second fiber-reinforced resin body 14 can be made higher than those of the first fiber-reinforced resin body 13. Impact resistance can be improved by this.

In this case, in this second exterior member 11, the glass fiber layer S1, which is the first fiber-reinforced resin sheet of the first fiber-reinforced resin body 13, has a thickness that is the front and back surface direction of the first fiber-reinforced resin body 13. The carbon fiber layer S2, which is the second fiber-reinforced resin sheet of the second fiber-reinforced resin body 14, is stacked in the thickness direction, which is the front and back surface direction of the second fiber-reinforced resin body 14. By doing so, it is possible to enhance the design, and also to increase the strength and improve the impact resistance.

That is, in this second exterior member 11, the glass fiber layer S1 of the first fiber-reinforced resin body 13 is inclined at a predetermined inclination angle θ in the thickness direction of the first fiber-reinforced resin body 13, and is perpendicular to the front and back directions. Since the structure is stacked along the direction, each end surface of the laminated large number of glass fiber layers S1 can be exposed on the surface and side surface of the first fiber reinforced resin body 13, and thereby the large number of glass fiber layers Since a pattern can be expressed by each end face of the layer S1, it is possible to have excellent decorativeness and improve designability.

In this case, on the surface of the first fiber-reinforced resin body 13, each end face of the large number of glass fiber layers S1 is formed into a striped pattern in which the end faces of the many glass fiber layers S1 are arranged in a straight line parallel to each other, for example, along a straight line connecting 12 o'clock and 6 o'clock. It looks like Further, on the side surface of the first fiber-reinforced resin body 13, each end face of a large number of glass fiber layers S1 is arranged in a straight line parallel to each other with each end face being inclined at a predetermined inclination angle θ, for example, an angle of 45°. It looks like stripes. In this case, on the side surfaces of the 3 o'clock side and the 9 o'clock side, each end face of a large number of glass fiber layers S1 is lined in a straight line parallel to each other along the front and back directions of the first fiber-reinforced resin body 13. It looks like Therefore, in this first fiber-reinforced resin body 13, a striped pattern can be expressed satisfactorily by each end face of the large number of glass fiber layers S1, so that the decorativeness is enhanced and the design is improved. .

In addition, in this second exterior member 11, the carbon fiber layer S2 of the second fiber reinforced resin body 14 is laminated in the thickness direction, which is the front and back surface direction of the second fiber reinforced resin body 14, so that glass fibers The strength can be increased more than that of the first fiber reinforced resin body 13 using. In this case, in this second exterior member 11, the second fiber-reinforced resin body 14 has a structure in which carbon fiber layers S2 using carbon fibers as reinforcing materials are laminated in the thickness direction of the second fiber-reinforced resin body 14. Therefore, the compressive strength in the thickness direction, which is the front and back direction, of the second fiber-reinforced resin body 14 and the tensile strength in the plane direction of the second fiber-reinforced resin body 14 are set to be higher than those of the first fiber-reinforced resin body 13. This can improve impact resistance.

That is, the second fiber-reinforced resin body 14 has a structure in which carbon fiber layers S2 are laminated in the front and back directions of the second fiber-reinforced resin body 14, and the first fiber-reinforced resin body 13 has a structure in which carbon fiber layers S2 are laminated in the front and back directions of the second fiber-reinforced resin body 14. This is a structure in which S1 is stacked at a predetermined angle of inclination θ, for example, at an angle of 45°, in a direction perpendicular to the front and back surfaces of the first fiber-reinforced resin body 13. Therefore, the second fiber-reinforced resin body 14 can make the bonding area at the interface between the carbon fiber layers S2 larger than the bonding area at the interface between the glass fiber layers S1 of the first fiber-reinforced resin body 13. .

As a result, the second fiber-reinforced resin body 14 can make the bonding strength at the interface between the carbon fiber layers S2 higher than the bonding strength at the interface between the glass fiber layers S1 of the first fiber-reinforced resin body 13. Therefore, the compressive strength in the thickness direction and the tensile strength in the plane direction of the second fiber reinforced resin body 14 can be made higher than the compressive strength in the thickness direction and the tensile strength in the plane direction of the first fiber reinforced resin body 13. can.

In addition, in this second exterior member 11, the first fiber reinforced resin body 13 is colored for each glass fiber layer S1, so that a striped color pattern is expressed by each end surface of the many glass fiber layers S1. Therefore, the decorativeness can be further improved, and the designability can thereby be further improved. That is, the first fiber-reinforced resin body 13 can be colored for each glass fiber layer S1 by mixing a pigment into the epoxy resin when hardening the glass fibers with the epoxy resin. A striped pattern can be satisfactorily expressed in color by each end face of the layer S1.

In addition, in this second exterior member 11, the second fiber reinforced resin body 14 is bonded to the back side of the first fiber reinforced resin body 13 by thermocompression bonding. It can be stacked on the back side of the first fiber-reinforced resin body 13 and joined to the first fiber-reinforced resin body 13 reliably and firmly.

That is, in this second exterior member 11, the first fiber-reinforced resin body 13 and the second fiber-reinforced resin body 14 are bonded together by thermocompression, thereby forming a glass fiber-reinforced resin sheet that is the first fiber-reinforced resin body 13. The epoxy resin of the glass fiber layer S1 in the body (GFRP) and the epoxy resin of the carbon fiber layer S2 in the carbon fiber reinforced sheet body (CFRP) which is the second fiber reinforced resin body 14 can be melted and fixed to each other. Therefore, the first fiber-reinforced resin body 13 and the second fiber-reinforced resin body 14 can be firmly joined.

Further, in this second exterior member 11, the first fiber reinforced resin body 13 has a surface portion 13a and a side surface portion 13b, and the second fiber reinforced resin body 14 has a side surface portion of the first fiber reinforced resin body 13. By providing the mounting protrusion 14a that protrudes laterally from the first fiber reinforced resin body 13b, the attachment protrusion 14a provided on the second fiber reinforced resin body 14, which has higher strength than the first fiber reinforced resin body 13, can be mounted. The second fiber-reinforced resin body 14 can be reliably and firmly attached to the case body 5 by increasing the strength.

In addition, in this second exterior member 11, the joint surface between the lower surface, which is the back surface of the surface portion 13a of the first fiber-reinforced resin body 13, and the upper surface, which is the surface of the second fiber-reinforced resin body 14, is the attachment protrusion 14a. By being located at a higher position in the thickness direction of the second fiber reinforced resin body 14 than the upper surface, which is the surface of the screw member 12, the surface of the first fiber reinforced resin body 13 is Peeling between the lower surface of the portion 13a and the upper surface of the second fiber-reinforced resin body 14 can be prevented.

In this case, in the second exterior member 11, the first screw insertion hole 14b penetrates the mounting protrusion 14a of the second fiber-reinforced resin body 14 in the thickness direction, which is the front and back surface direction of the second fiber-reinforced resin body 14. Since the screw member 12, which is a fastening member, can be inserted, the second fiber-reinforced resin body 14 can be reliably and firmly attached to the case body 5 by the screw member 12.

Further, according to this wristwatch case 1, by including the second exterior member 11 and the case body 5 on the surface of which the second exterior member 11 is disposed, the first exterior member 11 of the second exterior member 11 is The fiber-reinforced resin body 13 can improve the design, and the second fiber-reinforced resin body 14 of the second exterior member 11 can have higher strength than the first fiber-reinforced resin body 13. The attachment protrusion 14a of the fiber-reinforced resin body 14 can increase the attachment strength of the second exterior member 11 to the case body 5, thereby improving impact resistance.

In this case, in this wristwatch case 1, a screw mounting hole 7b, which is a mounting hole, is provided in the case body 5 in correspondence with the first screw insertion hole 14b of the mounting protrusion 14a in the second fiber-reinforced resin body 14. This allows the screw member 12, which is a fastening member, to be inserted into the first screw insertion hole 14b of the attachment protrusion 14a of the second fiber-reinforced resin body 14 and screwed into the screw attachment hole 7b of the case body 5. Therefore, the second exterior member 11 can be reliably and firmly attached to the case body 5.

That is, in this wristwatch case 1, the second exterior member 11 is inserted into the first screw insertion hole 14b of the attachment protrusion 14a provided on the second fiber-reinforced resin body 14, and then inserted into the screw attachment hole 7b of the case body 5. The second exterior member 11 can be reliably and firmly attached to the case body 5 by being attached to the case body 5 by the screw members 12 that are attached fastening members.

In this case, in this wristwatch case 1, the screw member 12 includes a head portion 12a, a neck portion 12b, and a screw portion 12c, and the screw portion 12c is attached to the second fiber-reinforced resin body 14 of the second exterior member 11. By screwing the protrusion 14a into the screw attachment hole 7b provided in the outer case 7 of the case body 5 from the first screw insertion hole 14b and tightening, the head 12a becomes the attachment protrusion of the second fiber-reinforced resin body 14. Since the portion 14a can be pressed against the outer case 7, the second exterior member 11 can be reliably and firmly attached to the case body 5.

That is, in this wristwatch case 1, the mounting protrusion 14a of the second fiber-reinforced resin body 14, against which the head 12a of the screw member 12 is pressed, attaches the carbon fibers in the direction of the front and back surfaces of the second fiber-reinforced resin body 14. Since it has a laminated structure, the strength of the attachment protrusion 14a of the second fiber-reinforced resin body 14 is higher than that of the first fiber-reinforced resin body 13, so the strength of the attachment of the second exterior member 11 to the case body 5 is higher. can be increased, thereby improving impact resistance.

Furthermore, in this wristwatch case 1, since the glass fiber layer S1, which is the first fiber-reinforced resin sheet of the first fiber-reinforced resin body 13, is inclined in the 3 o'clock direction, the second exterior member 11 can increase the strength of That is, in this wristwatch case 1, since the band attachment parts to which the watch band (not shown) is attached are provided at the 12 o'clock side and the 6 o'clock side, the external force from the watch band is applied to the 3 o'clock side and the 9 o'clock side. You will receive more from Therefore, since the glass fiber layer S1 is laminated at a predetermined inclination angle θ in the 3 o'clock and 9 o'clock direction, the strength can be increased.

In the above-described embodiment, a case has been described in which the first fiber-reinforced resin body 13 is formed only of the glass fiber layer S1 made of glass fibers hardened with epoxy resin. The first fiber-reinforced resin body may be formed as a composite fiber-reinforced resin body by combining both fiber layers: a glass fiber layer made of fibers hardened with epoxy resin and a carbon fiber layer made of carbon fibers hardened with epoxy resin. good.

In this case, the first fiber reinforced resin body 13 may be formed by laminating a glass fiber reinforced resin sheet using glass fiber as a reinforcing material and a carbon fiber reinforced resin sheet using carbon fiber as a reinforcing material. That is, the plurality of first fiber-reinforced resin sheets may be formed of a glass fiber-reinforced resin sheet and a carbon fiber-reinforced resin sheet.

In this case, also in the composite fiber-reinforced resin body, the glass fiber layer and the carbon fiber layer are tilted at a predetermined inclination angle θ in the thickness direction, which is the direction of the front and back surfaces of the composite fiber-reinforced resin body. Any structure may be used as long as it is a laminated structure. In such a composite fiber-reinforced resin body, since black can be expressed by the carbon fiber layer, there is no need to color the glass fiber layer black.

Furthermore, in the above-described embodiment, the second fiber-reinforced resin body 14 has a structure in which the carbon fiber layers S2 are laminated in the front and back directions of the second fiber-reinforced resin body 14, but the present invention , it does not necessarily have to be the carbon fiber layer S2; for example, it may be a glass fiber layer using glass fibers, or it may be a boron fiber layer using boron fibers or an aramid fiber layer using aramid fibers. .

Further, in the embodiments described above, the case where the invention is applied to a wristwatch has been described, but the present invention does not necessarily have to be a wristwatch, and can be applied to various types of timepieces such as a travel watch, an alarm clock, a desk clock, and a wall clock. . Further, the present invention does not necessarily have to be a watch, but can also be applied to electronic devices such as a mobile phone and a personal digital assistant.

Although one embodiment of this invention has been described above, this invention is not limited to this, but includes the invention described in the claims and its equivalents.
Below, the inventions described in the claims of the present application will be additionally described.

(Additional note)
The invention according to claim 1 provides a first fiber-reinforced resin body in which a plurality of first fiber-reinforced resin sheets are laminated, and a second fiber-reinforced resin body in which a plurality of second fiber-reinforced resin sheets are laminated. the first fiber-reinforced resin sheet of the first fiber-reinforced resin body is laminated at an angle with respect to the second fiber-reinforced resin sheet of the second fiber-reinforced resin body. It is an exterior member characterized by having a

According to a second aspect of the invention, in the exterior member according to the first aspect, the first fiber-reinforced resin sheet of the first fiber-reinforced resin body extends in the thickness direction of the first fiber-reinforced resin body. The exterior member is characterized in that the second fiber-reinforced resin sheets of the second fiber-reinforced resin body are laminated at an angle and are laminated in the thickness direction of the second fiber-reinforced resin body.

The invention according to claim 3 is the exterior member according to claim 1 or 2, wherein the first fiber-reinforced resin sheet of the first fiber-reinforced resin body uses glass fiber as a reinforcing material. The exterior member is a glass fiber reinforced resin sheet, and the second fiber reinforced resin sheet of the second fiber reinforced resin body is a carbon fiber reinforced resin sheet using carbon fiber as a reinforcing material. .

The invention according to claim 4 is the exterior member according to claim 1 or 2, wherein the first fiber-reinforced resin sheet of the first fiber-reinforced resin body uses glass fiber as a reinforcing material. The second fiber reinforced resin sheet of the second fiber reinforced resin body is a carbon fiber reinforced resin sheet using a glass fiber reinforced resin sheet and carbon fiber as a reinforcing material, and the second fiber reinforced resin sheet of the second fiber reinforced resin body is a carbon fiber reinforced resin sheet using carbon fiber as a reinforcing material. This is an exterior member characterized by being a fiber-reinforced resin sheet.

The invention according to claim 5 is the exterior member according to any one of claims 1 to 4, wherein the first fiber-reinforced resin body is the first fiber-reinforced resin sheet in which fibers are hardened with resin. The exterior member is characterized in that the first fiber-reinforced resin sheets laminated are individually colored.

The invention according to claim 6 is the exterior member according to any one of claims 1 to 5, wherein the second fiber-reinforced resin body is bonded by thermocompression to the back side of the first fiber-reinforced resin body. This is an exterior member characterized by being joined by.

The invention according to claim 7 is the exterior member according to any one of claims 1 to 6, wherein the first fiber-reinforced resin body includes a surface portion and a side portion, and the second fiber-reinforced resin body includes a surface portion and a side portion. The resin body is an exterior member characterized in that it includes a mounting protrusion that protrudes laterally from the side surface of the first fiber-reinforced resin body.

The invention according to claim 8 is the exterior member according to claim 7, in which the joint surface between the back surface of the first fiber-reinforced resin body and the front surface of the second fiber-reinforced resin body is connected to the mounting protrusion. The exterior member is located at a position higher in the thickness direction of the second fiber-reinforced resin body than the surface of the exterior member.

The invention according to claim 9 is the exterior member according to claim 7 or 8, in which the attachment protrusion of the second fiber reinforced resin body has an insertion hole in the thickness direction in which the front and back surfaces are directed. This is an exterior member characterized in that it is provided so as to penetrate through the.

The invention according to claim 10 is a case comprising: the exterior member according to any one of claims 1 to 9; and a case body on the surface of which the exterior member is disposed. It is.

The invention according to claim 11 is the case according to claim 10, wherein the case body is provided with a mounting hole corresponding to the insertion hole of the mounting protrusion in the second fiber-reinforced resin body. This is a case characterized by the fact that

According to a twelfth aspect of the invention, in the case according to the eleventh aspect, the exterior member is inserted into the insertion hole of the attachment protrusion in the second fiber-reinforced resin body to attach the case body to the case body. The case is characterized in that it is attached to the case body by a fastening member that is attached to the hole.

The invention according to claim 13 is the case according to any one of claims 10 to 12, wherein the first fiber-reinforced resin sheet of the first fiber-reinforced resin body has an inclination of 3 o'clock and 9 o'clock. This is a case characterized by being tilted in the direction.

The invention according to claim 14 is a timepiece characterized by comprising the case according to any one of claims 10 to 13.

1 Watch case 2 Band attachment part 3 Switch button 4 Watch glass 5 Case body 6 Exterior member 7 Outer case 7b Screw attachment hole 8 Inner case 10 First exterior member 10a Plate part 10b Cylindrical part 10c Regulating part 10d Second screw insertion hole 11 Second exterior member 12 Screw member 12a Head 12b Neck 12c Threaded portion 13 First fiber reinforced resin body 13a Surface portion 13b Side portion 14 Second fiber reinforced resin body 14a Mounting protrusion 14b First screw insertion hole 14c Main body Part S1 Glass fiber layer S2 Carbon fiber layer θ Inclination angle

Claims (14)

a first fiber-reinforced resin body in which a plurality of first fiber-reinforced resin sheets are laminated;
a second fiber-reinforced resin body in which a plurality of second fiber-reinforced resin sheets are laminated;
Equipped with
The first fiber-reinforced resin sheet of the first fiber-reinforced resin body is laminated at an angle with respect to the second fiber-reinforced resin sheet of the second fiber-reinforced resin body. Exterior parts. The exterior member according to claim 1,
The first fiber-reinforced resin sheets of the first fiber-reinforced resin body are stacked at an angle in the thickness direction of the first fiber-reinforced resin body,
An exterior member characterized in that the second fiber-reinforced resin sheets of the second fiber-reinforced resin body are laminated in the thickness direction of the second fiber-reinforced resin body. In the exterior member according to claim 1 or claim 2,
The first fiber reinforced resin sheet of the first fiber reinforced resin body is a glass fiber reinforced resin sheet using glass fiber as a reinforcing material,
An exterior member characterized in that the second fiber-reinforced resin sheet of the second fiber-reinforced resin body is a carbon fiber-reinforced resin sheet using carbon fiber as a reinforcing material. In the exterior member according to claim 1 or claim 2,
The first fiber reinforced resin sheet of the first fiber reinforced resin body is a glass fiber reinforced resin sheet using glass fiber as a reinforcing material and a carbon fiber reinforced resin sheet using carbon fiber as a reinforcing material,
The exterior member characterized in that the second fiber-reinforced resin sheet of the second fiber-reinforced resin body is a carbon fiber-reinforced resin sheet using carbon fiber as a reinforcing material. In the exterior member according to any one of claims 1 to 4,
The first fiber-reinforced resin body is characterized in that the first fiber-reinforced resin sheets in which fibers are hardened with resin are laminated, and the laminated first fiber-reinforced resin sheets are individually colored. exterior parts. In the exterior member according to any one of claims 1 to 5,
The exterior member characterized in that the second fiber-reinforced resin body is joined to the back side of the first fiber-reinforced resin body by thermocompression bonding. In the exterior member according to any one of claims 1 to 6,
The first fiber-reinforced resin body includes a surface portion and a side surface portion,
The exterior member is characterized in that the second fiber-reinforced resin body includes a mounting protrusion that protrudes laterally from the side surface of the first fiber-reinforced resin body. The exterior member according to claim 7,
The joint surface between the back surface of the first fiber-reinforced resin body and the surface of the second fiber-reinforced resin body is located at a higher position in the thickness direction of the second fiber-reinforced resin body than the surface of the mounting protrusion. An exterior member characterized by: In the exterior member according to claim 7 or claim 8,
An exterior member characterized in that the attachment protrusion of the second fiber-reinforced resin body is provided with an insertion hole penetrating in the thickness direction, which is the direction of the front and back surfaces. The exterior member according to claim 9 ;
a case body on which the exterior member is disposed;
A case characterized by the following. In the case according to claim 10,
A case characterized in that the case body is provided with a mounting hole corresponding to the insertion hole of the mounting protrusion in the second fiber-reinforced resin body. In the case according to claim 11,
The exterior member is attached to the case body by a fastening member that is inserted into the insertion hole of the attachment protrusion in the second fiber-reinforced resin body and attached to the attachment hole of the case body. case. In the case according to any one of claims 10 to 12,
A case characterized in that the first fiber-reinforced resin sheet of the first fiber-reinforced resin body is inclined in a 3:00 o'clock direction. A timepiece comprising a case according to any one of claims 10 to 13.

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