JP2019086333A - Case and timepiece - Google Patents

Abstract

To provide a case which can secure the shock resistance of the whole of the case and can be downsized even when an exterior member is made of a fragile material.SOLUTION: The case comprises: a base body 5; an exterior member 6 made of a fragile material and arranged outside the base body 5; and a protective member 7 arranged on the outer surface of the exterior member 6 in noncontact manner. Thus, a shock from the outside can be stopped by the protective member 7 that is arranged on the outer surface of the exterior member 6 in noncontact manner and secured to the base body 5, accordingly it is possible to prevent the breakage of the exterior member 6 even when the exterior member 6 is made of a fragile material and secure the shock resistance of the whole of the case, and also it is possible to reduce the thickness of the protective member 7 by using a material having high rigidity such as a carbon material for the protective member 7 and therefore the size of the whole of the case can be reduced.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a case used for an electronic device such as a watch and a watch provided with the same.

  For example, in a watch case, as described in Patent Document 1, an elastic cover member is provided on the outer surface of the case main body, and this elastic cover member is known to protect the case main body.

JP, 2010-32424, A

  In this type of watch case, the central portions of the side portions on the 3 o'clock side and the 9 o'clock side of the elastic cover member are formed to project outward, and the elastic cover member at these central portions and the corresponding case main body A space is provided between the two, and this space makes the elastic cover member easy to deform.

  However, in such a watch case, when the elastic cover member receives an impact from the outside, even if the impact of the 3 o'clock side and the 9 o'clock side can be reliably absorbed by the elastic cover member, the 3 o'clock side There is a problem that the thickness of the elastic cover member has to be made thicker in order to reliably absorb the impact by the elastic cover member at a place other than the 9 o'clock side.

  Further, in this watch case, the central portions of the side portions on the 3 o'clock side and the 9 o'clock side of the elastic cover member are projected to the outside, and between the elastic cover members at these central portions and the corresponding case main body. Since the space portion is provided in the case, the external shape of the whole case becomes large, and there is also a problem that the whole case becomes large.

  The problem to be solved by the present invention is to provide a case capable of securing the impact resistance of the entire case and achieving downsizing even when the exterior member is a brittle material, and a timepiece provided with the case. is there.

  The present invention comprises a case body, an exterior member of a brittle material disposed outside the case body, and a protection member disposed in a non-contact state on the outer surface of the exterior member and fixed to the case body. The case is characterized by

  According to this invention, even if the exterior member is a brittle material, the impact resistance of the entire case can be secured, and the entire case can be miniaturized.

It is an enlarged front view showing one embodiment which applied this invention to a wristwatch. It is the expanded sectional view which showed the principal part in the AA arrow of the wristwatch shown by FIG. It is the expanded sectional view which showed the principal part in the BB arrow of the wristwatch shown by FIG. FIG. 6 is an exploded perspective view showing a state in which the first protection portion of the protection member is attached to the exterior member in the watch case shown in FIG. 1; FIG. 5 is an exploded front view showing the watch case shown in FIG. 4; FIG. 7 is an exploded perspective view of the main part of the watch case shown in FIG. 1 showing a state in which the second protective portion of the protective member is attached to the exterior member. It is the expanded sectional view which showed the principal part in CC arrow of the watch case shown by FIG.

Hereinafter, an embodiment in which the present invention is applied to a wristwatch will be described with reference to FIGS. 1 to 7.
This watch is provided with a watch case 1 as shown in FIG. A band attachment portion 3 to which a watch band 2 is attached is provided on each of the 12 o'clock side and the 6 o'clock side of the watch case 1. Further, switch parts 4 are respectively provided on the 2 o'clock side, the 4 o'clock side, the 8 o'clock side and the 10 o'clock side of the wristwatch case 1.

  As shown in FIGS. 1 to 3, the wristwatch case 1 is disposed in non-contact with the case main body 5, the exterior member 6 disposed outside the case main body 5, and the exterior surface of the exterior member 6. And a protective member 7. The case body 5 is formed of metal or hard synthetic resin. A watch glass 8 is attached to the upper opening of the case body 5 via a glass packing 8a.

  Further, as shown in FIGS. 2 and 3, the back cover 10 is attached to the lower portion of the case main body 5 via a waterproof ring 10 a. In this case, a notch 5a is provided on the upper outer periphery of the case main body 5 over the entire periphery. Further, through holes (not shown) are provided for the respective switch portions 4 in the side portions of the case main body 5 at 2 o'clock, 4 o'clock, 8 o'clock and 10 o'clock.

  As shown in FIGS. 2 and 3, the watch module 11 is disposed inside the case body 5 via the middle frame 11 a. Although not shown, the clock module 11 is a clock movement for moving a hand to indicate a time, a display unit for electro-optically displaying information such as a time, a day, a date, and a circuit for electrically driving these. It is equipped with various parts necessary for the watch function such as a board.

  The exterior member 6 is formed of a hard brittle material such as sapphire, glass, or ceramic as shown in FIGS. 1 to 3. The exterior member 6 includes a first exterior portion 12 disposed on the side portion of the case main body 5 and a second exterior portion 13 disposed on the upper portion of the case main body 5. The first exterior portion 12 is disposed on the side of the case main body 5 along the entire circumference thereof, and the band attachment portion 3 is provided on the 12 o'clock side and the 6 o'clock side.

  That is, as shown in FIGS. 2 and 3, the height of the first exterior portion 12 is the length from the bottom of the notch 5 a provided at the top of the case main body 5 to the lower end of the case main body 5. The wall thickness is formed to be substantially the same as or slightly thinner than that of the case main body 5 with substantially the same length. In addition, through holes (not shown) are provided for each of the switch portions 4 at four positions on the 2nd, 4th, 8th, and 10th sides of the first exterior portion 12. .

  As shown in FIGS. 1 to 3, the second exterior part 13 is disposed at the upper part of the case main body 5 over the entire circumference thereof. That is, the second exterior portion 13 is disposed such that the inner peripheral side corresponds to the upper end of the case main body 5 and the outer peripheral side corresponds to the notch 5 a provided in the upper portion of the case main body 5. Is configured as. For this reason, the thickness of the outer peripheral part side of the second exterior part 13 is larger than the thickness of the inner peripheral part side. Thereby, the step surface 13 b is provided on the lower surface of the second exterior portion 13.

  As shown in FIGS. 1 to 3, the protective member 7 is formed of a light, highly rigid flexible material such as a carbon material. The protection member 7 is disposed on the outer surface of the exterior member 6 via the buffer member 14 so as to be disposed on the outer surface of the exterior member 6 in a non-contact manner. That is, the protection members 7 are disposed on both the 3 o'clock side and the 9 o'clock side of the first exterior portion 12 and are attached to the case main body 5 by the first screw members 22; And a second protection portion 17 disposed at a plurality of locations of the second exterior portion 13 and attached to the case main body 5 by the second screw member 23.

  As shown in FIGS. 4 and 5, the pair of first protection portions 16 is arranged from one side of the band attachment portion 3 located on the 12 o'clock side of the first exterior portion 12 to the 6 o'clock side of the first exterior portion 12. It is comprised so that it may arrange | position on the both sides of the 1st exterior part 12 at the 3 o'clock side and the 9 o'clock side over one side part of the band attachment part 3 located, respectively. In this case, through holes 16a are provided for the respective switch portions 4 on the 2 o'clock and 4 o'clock sides of the first protective portion 16 located on the 3 o'clock side.

  As shown in FIGS. 3 and 4, a counterbore hole 16b in which a head portion 22a of a first screw member 22 described later is disposed is provided on a side portion on the 3 o'clock side of the first protective portion 16 . Similarly, through holes 16a are provided for the switch portions 4 at the 8 o'clock and 10 o'clock sides of the first protective portion 16 located on the 9 o'clock side, respectively. A counterbore hole 16b in which a head portion 22a of a first screw member 22 described later is disposed is also provided on the side portion on the 9 o'clock side of the first protective portion 16.

  In this case, as shown in FIGS. 2 and 3, the inner surface of each of the pair of first protective portions 16 is one side portion of the band attachment portion 3 in which the concave portion 16 c is located on the 12 o'clock side of the first exterior portion 12. It is provided over one side portion of the band attachment portion 3 located on the 6 o'clock side of the first exterior portion 12. The concave portion 16 c is configured such that the convex portion 12 a provided on the outer surface of the first exterior portion 12 is disposed.

  On the other hand, as shown in FIG. 1 and FIGS. 4 to 7, the plurality of second protective portions 17 are disposed on the 1 o'clock side, 5 o'clock side, 7 o'clock side, and 11 o'clock side of the exterior member 6 respectively. . That is, each of the plurality of second protective portions 17 corresponds to the upper surface portion 17 a disposed corresponding to the upper surface of the second exterior portion 13 and each side surface of the second exterior portion 13 and the first exterior portion 12. And a side portion 17b to be disposed.

  The upper surface portion 17a is formed on the upper surface of the second exterior portion 13 so as to extend from the outer peripheral end to the inner peripheral end and to be protruded from the inner peripheral end, as shown in FIGS. ing. The side surface portion 17 b is formed to be disposed from the upper surface of the second exterior portion 13 to the lower portion of the first exterior portion 12.

  As shown in FIGS. 6 and 7, the side surface portion 17b is integrally formed with a pipe portion 17c to be inserted into the insertion hole 12b provided in the first exterior portion 12. The second screw member 23 is inserted without coming into contact with the first exterior portion 12, and the pipe portion 17 c has a length in the axial direction slightly longer than the insertion hole 12 b of the first exterior portion 12. ing.

  As shown in FIGS. 2, 3 and 7, the buffer member 14 includes a first buffer portion 18 partially disposed between the first exterior portion 12 and the first protective portion 16, and a second exterior portion. 13, a second buffer portion 19 disposed between the second protection portion 17 and a third buffer portion 20 partially disposed between the first exterior portion 12 and the second exterior portion 13, and a case And a fourth buffer portion 21 partially disposed between the main body 5 and the second exterior portion 13.

  Each of these first to fourth buffer portions 18 to 21 has a structure in which two types of first and second buffer layers 14a and 14b having different hardnesses are stacked, as shown in FIGS. 2, 3 and 7. There is. That is, the first buffer layer 14a is a silicone rubber having a low hardness of about 30 ° to 50 °. The second buffer layer 14b is a silicone rubber for damping and having a high hardness of about 60 ° and a damping rate, and has a structure in which the impact force is dispersed and is not concentrated at one point.

  As shown in FIGS. 2 to 5, a plurality of first buffer portions 18 are provided between the convex portion 12 a provided on the outer surface of the first exterior portion 12 and the concave portion 16 c provided on the inner surface of the first protective portion 16. It is partially arranged at the place. Thus, a gap S1 is provided between the outer surface of the first exterior portion 12 and the inner surface of the first protective portion 16 by the plurality of first buffer portions 18.

  In this case, as shown in FIG. 2, even if a space S1 is provided between the outer surface of the first exterior portion 12 and the inner surface of the first protective portion 16, the first buffer portion 18 can The convex portion 12 a provided on the outer surface is disposed in the concave portion 16 c provided on the inner surface of the first protection portion 16 so as to be invisible from the outside.

  As shown in FIGS. 2, 6 and 7, the second buffer portions 19 are provided at four positions on the upper surface of the second exterior portion 13 at one o'clock side, five o'clock side, seven o'clock side, and eleven o'clock side, respectively. On the lower surfaces of the upper surface portions 17a of the plurality of second protective portions 17 corresponding to the four installation recess portions 13a and the four positions of the 1st, 5th, 7th, and 11th sides of the second exterior portion 13. It arrange | positions in the installation recessed part 17d provided, respectively. Thus, gaps S2 are respectively provided between the upper surface of the second exterior portion 13 and the lower surfaces of the upper surface portions 17a of the plurality of second protective portions 17.

  As shown in FIGS. 2, 3 and 7, the third buffer portion 20 extends between the notch 5 a provided on the outer periphery of the upper portion of the case body 5 and the upper end surface of the first exterior portion 12, It is arranged partially in the circumferential direction, and in this state, the lower surface on the outer peripheral part side of the second exterior part 13 and the step surface 13b of the second exterior part 13 are arranged from above and sandwiched.

  That is, as shown in FIGS. 2, 3 and 7, the third buffer portion 20 is flat disposed between the upper end surface of the first exterior portion 12 and the lower surface on the outer peripheral portion side of the second exterior portion 13. And a rising portion 20b disposed between the rising surface of the notch 5a of the case main body 5 and the step surface 13b of the second exterior portion 13.

  Thereby, between the upper end surface of the first exterior portion 12 and the lower surface on the outer peripheral portion side of the second exterior portion 13, as shown in FIGS. 2, 3 and 7, the flat portion of the third buffer portion 20. A gap S3 is provided by 20a. Further, a clearance S4 is provided between the rising surface of the notch 5a of the case main body 5 and the step surface 13b of the second exterior 13 by the rising portion 20b of the third buffer portion 20.

  The fourth buffer portion 21 is partially disposed between the upper end surface of the case main body 5 and the lower surface on the inner peripheral portion side of the second exterior portion 13 as shown in FIGS. 2, 3 and 7. . Thus, a gap S5 is provided between the upper surface of the case main body 5 and the lower surface on the inner peripheral portion side of the second exterior portion 13 by the fourth buffer portion 21. In this case, the thickness of the fourth buffer 21 is thinner than the thickness of the third buffer 20.

  On the other hand, as shown in FIG. 3, the first screw member 22 for fixing the pair of first protection portions 16 to the case main body 5 includes a head portion 22a, a shaft portion 22b and a screw portion 22c. In the first screw member 22, the head portion 22 a is disposed in the counterbore 16 b of the first protection portion 16, and the shaft portion 22 b is provided on the 3 and 9 o'clock sides (not shown) of the first exterior portion 12. The pair of first protective portions 16 is inserted into the provided cylindrical portion 24 in the through hole 12c, and the screw portion 22c is screwed into the screw hole 5b provided in the case main body 5 to fix the pair of first protective portions 16 to the first exterior It is configured to be fixed to the case main body 5 together with the portion 12.

  In this case, as shown in FIG. 3, the cylindrical portion 24 is formed of a buffer material, the outer diameter of which is smaller than the inner diameter of the through hole 12 c of the first exterior portion 12, and the axial length is the first It is formed longer than the through hole 12 c of the exterior portion 12. The cylindrical portion 24 is integrally formed of the same material as the first protective portion 16.

  Therefore, as shown in FIG. 3, the first screw member 22 is prevented from coming into contact with the inner peripheral surface of the through hole 12 c of the first exterior portion 12 by inserting the shaft portion 22 b into the cylindrical portion 24. It is configured. The cylindrical portion 24 is configured to provide a clearance S1 between the inner surface of the first protective portion 16 and the side surface of the first exterior portion 16 when the first screw member 22 is tightened.

  Further, as shown in FIG. 7, the plurality of second screw members 23 for fixing the plurality of second protective portions 17 to the case main body 5 include a head 23a, a shaft portion 23b and a screw portion 23c. In the second screw member 23, the head portion 23 a is disposed in the counterbore hole 17 e corresponding to the pipe portion 17 c of the second protection portion 16, and the shaft portion 23 b is in the insertion hole 12 b provided in the first exterior portion 12. The second protective portion 17 together with the first exterior portion 12 and the second exterior portion 13 is inserted into the pipe portion 17c, and the screw portion 23c is screwed into and screwed into the screw hole 5c provided in the case main body 5. It is configured to be fixed to the main body 5.

  In this case, as shown in FIG. 7, the pipe portion 17c is integrally formed on the second protective portion 17 with the same material. The outer diameter of the pipe portion 17c is smaller than the inner diameter of the insertion hole 12b of the first exterior portion 12, and the axial length of the pipe portion 17c is longer than the insertion hole 12b of the first exterior portion 12.

  Therefore, as shown in FIG. 7, the second screw member 23 is inserted into the pipe portion 17 c of the second protective portion 17 as shown in FIG. 7, whereby the inner periphery of the insertion hole 12 b of the first exterior portion 12 is formed. It is configured not to touch the surface. Further, when the second screw member 23 is tightened, the pipe portion 17 c is located between the side surfaces of the first exterior portion 16 and the second exterior portion 13 and the inner surface of the side surface portion 17 b of the second protective portion 17. A gap S6 is provided.

Next, the operation of such a watch will be described.
When assembling this watch, first, the watch case 1 is assembled. At this time, the watch glass 8 is attached to the upper opening of the case main body 5 together with the glass packing 8a in advance. In this state, the exterior member 6 of a hard brittle material such as sapphire, glass, or ceramic is disposed outside the case main body 5.

  At this time, the first exterior portion 12 is disposed over the entire circumference on the outer surface of the side portion of the case main body 5, and the screw holes 5b provided on the 3 o'clock side and the 9 o'clock side of the case main body 5 The through holes 12c provided on the 3 o'clock side and the 9 o'clock side of the portion 12 correspond on the same axis. At this time, a plurality of screw holes 5c provided at four positions on the 1st, 5th, 7th and 11th sides of the case body 5 and the 1st and 5th positions of the first exterior portion 12 are also provided. A plurality of insertion holes 12b provided at four locations on the side, 7 o'clock side and 11 o'clock side correspond on the same axis.

  Furthermore, at this time, a plurality of through holes (not shown) provided corresponding to the switch portion 4 at four locations on the 2 o'clock side, 4 o'clock side, 8 o'clock side and 10 o'clock side of the case main body 5 and the first A plurality of through holes (not shown) provided corresponding to the switch unit 4 at four positions on the 2 o'clock side, 4 o'clock side, 8 o'clock side and 10 o'clock side of the exterior part 12 are made to correspond on the same axis .

  Then, the second exterior part 13 is disposed on the upper part of the case main body 5 via the third and fourth buffer parts 20 and 21. At this time, the third buffer portion 20 is partially disposed in advance in the notch 5 a provided in the upper portion of the case main body 5 and the upper surface of the first exterior portion 12. The buffer unit 21 is partially arranged.

  In this state, the second exterior part 13 is disposed on the upper part of the case main body 5 via the third and fourth buffer parts 20 and 21. At this time, the outer peripheral portion side of the second exterior portion 13 is disposed to correspond to the upper surface of the first exterior portion 12 to sandwich the third buffer portion 20, and the inner peripheral portion side of the second exterior portion 13 is the case main body 5 The fourth buffer portion 20 is sandwiched between the upper and lower end faces of the fourth buffer portion 20.

  Thereafter, the protection member 7 is disposed on the outer surface of the exterior member 6 in a non-contact manner. At this time, first, the plurality of second protective portions 17 are arranged at four positions on the outer surface of the exterior member 6 at 1 o'clock side, 5 o'clock side, 7 o'clock side, and 11 o'clock side. In this case, the second buffer portions 19 are provided in advance in the respective installation concave portions 13a provided at four positions on the upper surface of the second exterior portion 13 at 1 o'clock side, 5 o'clock side, 7 o'clock side and 11 o'clock side. Arrange each one.

  In this state, the plurality of second protection portions 17 are disposed on the outer surface of the exterior member 6. At this time, the pipe portion 17c provided on the side surface portion 17b of the second protective portion 17 is inserted at four locations on the first exterior portion 12 at 1 o'clock side, 5 o'clock side, 7 o'clock side, 11 o'clock side. While being inserted into the hole 12b, the second buffer portion 19 is disposed in correspondence with the installation recess 17d provided on the lower surface of the upper surface portion 17a of the second protective portion 17.

  Then, the plurality of second protective portions 17 are attached to the case main body 5 together with the exterior member 6 by the second screw member 23. At this time, the shaft portion 23b of the second screw member 23 is inserted into the pipe portion 17c, and the screw portion 23c is screwed into the screw hole 5c of the case main body 5 and tightened. Then, the head portion 23 a of the second screw member 23 is disposed in the counterbore 17 e of the second protection portion 17, and in this state, the head portion 23 a turns the pipe portion 17 c of the second protection portion 17 to the first exterior portion 12. Press down.

  Thereby, the plurality of second protection portions 17 are attached to the case main body 5 together with the exterior member 6. At this time, a gap S2 is provided between the upper surface of the second exterior portion 13 and the lower surface of the upper surface portion 17a of the second protective portion 17 by the second buffer portion 19. At this time, since the axial length of the pipe portion 17c of the second protective portion 17 is longer than the length of the insertion hole 12b, the side surface portion 17b of the second protective portion 17 and the first and second exterior portions 12 A gap S6 is provided between the side surfaces of the pair 13.

  At this time, a gap S3 is provided between the upper surface of the first exterior portion 12 and the lower surface on the outer peripheral side of the second exterior portion 13 by the flat portion 20a of the third buffer portion 20. A clearance S4 is provided between the rising surface of the notch 5a provided in the second embodiment and the step surface 13b of the second exterior 13 by the rising portion 20b of the third buffer 20. Further, a gap S5 is provided between the upper end surface of the case main body 5 and the lower surface on the inner peripheral side of the second exterior portion 13 by the fourth buffer portion 21.

  After this, a pair of first protection portions 16 is disposed on the 3 o'clock side and the 9 o'clock side of the first exterior portion 12 respectively. At this time, the cylindrical portion 24 is inserted into the through hole 12 c of the first exterior portion 12 in advance. At this time, the plurality of first buffer portions 18 are partially disposed between the convex portion 12 a provided on the outer surface of the first exterior portion 12 and the concave portion 16 c provided on the inner surface of the first protective portion 16. .

  In this state, in a state in which the side surface portions 17b of the plurality of second protection portions 17 disposed in the first and second exterior portions 12 and 13 are covered with the pair of first protection portions 16, the pair of first protection portions 16 are disposed on the 3 o'clock side and the 9 o'clock side of the first exterior portion 12 respectively. At this time, the counterbore 16 b of the first protective portion 16 and the cylindrical portion 24 provided in the through hole 12 c of the first exterior portion 12 correspond on the same axis.

  Then, the first protective portion 16 is attached to the case main body 5 together with the first exterior portion 12 by the first screw member 22. At this time, the shaft portion 22b of the first screw member 22 is inserted into the cylindrical portion 24, and the screw portion 22c is screwed into the screw hole 5b of the case main body 5 and tightened. Then, the head 22 a of the first screw member 22 is disposed in the counterbore 16 b of the first protection portion 16, and in this state, the head 22 a presses the first protection portion 16 and the cylindrical portion 24 against the case main body 5. .

  Thus, the pair of first protection portions 16 is attached to the case main body 5 together with the first exterior portion 12. At this time, a gap S <b> 1 is provided between the outer surface of the first exterior portion 12 and the inner surface of the first protective portion 16 by the first buffer portion 18. At this time, since the axial length of the cylindrical portion 24 is longer than the length of the through hole 12 c of the first exterior portion 12, the distance between the inner surface of the first protective portion 16 and the outer surface of the first exterior portion 12 A gap S1 is provided.

  In this case, even if the first buffer portion 18 is provided with the gap S1 between the outer surface of the first exterior portion 12 and the inner surface of the first protective portion 16, the convex portion provided on the outer surface of the first exterior portion 12 12a is disposed in a recess 16c provided on the inner surface of the first protective portion 16. Therefore, the first buffer 18 can not be seen from the outside. Thereby, the watch case 1 is assembled.

  When the watch case 1 is assembled in this manner, the switch portion 4 is attached to each side of the watch case 1 at 2 o'clock on the 4 o'clock side, 8 o'clock side, and 10 o'clock side. The clock module 11 is incorporated into the case 1 from below. Then, the back cover 10 is attached to the lower part of the case main body 5 together with the waterproof ring 10 a. Thus, the watch is assembled.

  Such a watch case 1 can be colored by forming the exterior member 6 of a material such as sapphire, glass, ceramic, etc., so that the decorativeness and colorability are high, and the location excluding the protective member 7 By exposing the exterior member 6 of the present invention, a product having excellent designability and high commercial value can be obtained. In this watch, even if the watch case 1 receives an impact from the outside, the impact is received by the protective member 7 so that the exterior member 6 of a hard brittle material such as sapphire, glass, ceramic or the like is not broken. it can.

  For example, when the wristwatch case 1 receives an impact from the side, the impact can be received by the first protection portion 16 of the protection member 7. At this time, the shock is buffered by the first buffer portion 18 of the buffer member 14 partially disposed between the first protective portion 16 and the first exterior portion 12 of the exterior member 6.

  That is, the first buffer portion 18 has a structure in which two types of first and second buffer layers 14a and 14b having different hardnesses are stacked, and the first buffer layer 14a has a low hardness of about 30 ° to 50 °. By being a rubber, it elastically deforms in response to an impact to absorb the impact, and the second buffer layer 14b is a silicone rubber for high damping with a hardness of about 60 ° and a damping ratio, The impact force can be dispersed and not concentrated at one point.

  In this case, since the gap S1 is provided by the first buffer portion 18 between the first protective portion 16 and the first exterior portion 12, the first buffer layer 14a of the first buffer portion 18 has a thickness direction Even if the first protective portion 16 is elastically deformed, the first protective portion 16 does not contact the first exterior portion 12. For this reason, even if the first exterior portion 12 is formed of a hard brittle material such as sapphire, glass, ceramic or the like, no breakage occurs.

  Further, at this time, the side surface portion 17b of the second protection portion 17 is disposed between the first protection portion 16 and the first exterior portion 12. However, the side surface portion 17b of the second protection portion 17 and the first exterior A gap S6 is provided between the portion 12 and the pipe portion 17c of the side surface portion 17b inserted into the insertion hole 12b of the first exterior portion 13.

  For this reason, even if the first protection portion 16 presses the side surface portion 17b of the second protection portion 17 when the first protection portion 16 receives an impact from the side and the first buffer portion 18 elastically deforms, There is no contact with the first exterior portion 12. For this reason, this also prevents the first exterior portion 12 formed of a hard brittle material such as sapphire glass or ceramic from being broken.

  Further, for example, when the wristwatch case 1 receives an impact from above, the impact can be received by the plurality of second protection portions 17 of the protection member 7. At this time, since the plurality of second protective portions 17 includes the upper surface portion 17a and the side surface portions 17b, the plurality of second protective portions 17 can be bent to receive an impact, and the plurality of second protective portions 17 can be received. The shock is buffered by the second shock absorbers 19 of the shock absorbers 14 respectively disposed between the second cover 13 and the second cover 13 of the cover member 6.

  That is, the plurality of second buffer portions 19 also have a structure in which two types of first and second buffer layers 14a and 14b having different hardnesses are stacked, similarly to the first buffer portion 18, and the first buffer layer 14a has a hardness of 30. The silicone rubber is elastically deformed in response to an impact to absorb the impact, and the second buffer layer 14b has a high hardness of about 60 ° and prevents a damping rate. By using the silicone rubber for vibration, it is possible to disperse the impact force so as not to concentrate on one point.

  In this case, since the gap S2 is provided between the plurality of second protective portions 17 and the second exterior portion 13 by the second buffer portion 19, the first buffer layer 14a of the second buffer portion 19 is formed. Even if the second protective portion 16 is elastically deformed in the thickness direction, the second protective portion 16 does not contact the second exterior portion 13. For this reason, even if the 2nd exterior part 13 is formed with hard brittle materials, such as sapphire, glass, and ceramic, it does not break.

  At this time, the third buffer portion 20 is disposed between the lower surface on the outer peripheral portion side of the second exterior portion 13 and the upper surface of the first exterior portion 12, and the inner peripheral side of the second exterior portion 13. The fourth buffer portion 21 is disposed between the lower surface of the lower case and the upper end surface of the case body 5. For this reason, even if the plurality of second protection portions 17 receive an impact from above, and the upper surface portion 17a of the second protection portion 17 pushes down the second exterior portion 13, the third and fourth buffer portions 20 and 21 buffer can do.

  That is, a gap S3 is provided by the third buffer portion 20 between the lower surface on the outer peripheral portion side of the second exterior portion 13 and the upper surface of the first exterior portion 12 and the inner peripheral side of the second exterior portion 13 A gap S4 is provided by the fourth buffer portion 21 between the lower surface of the lower case and the upper end surface of the case main body 5. For this reason, even if the plurality of second protection portions 17 receive an impact from above, and the upper surface portion 17a of the second protection portion 17 pushes down the second exterior portion 13, the second exterior portion 13 and the first exterior portion 12 There is no contact with the case body 5. For this reason, the first exterior portion 12 and the second exterior portion 13 formed of a hard brittle material such as sapphire glass or ceramic are not damaged by this either.

  As described above, according to this watch case 1, the case main body 5, the exterior member 6 of the brittle material disposed outside the case main body 5, and the protection disposed without contact with the outer surface of the exterior member 6 By providing the member 7, even if the exterior member 6 is a brittle material, the impact resistance of the entire case can be secured, and the entire case can be miniaturized.

  That is, in the wristwatch case 1, since the protective member 7 can receive external impact by the protective member 7 being disposed on the outer surface of the exterior member 6 in a non-contact state, breakage of the exterior member 6 can be prevented. It is possible to prevent the impact resistance of the entire case. Further, by arranging the protective member 7 on the outer surface of the exterior member 6 in a non-contact state, it is possible to use a light and highly rigid flexible material such as a carbon material, so the thickness of the protective member 7 can be reduced. Thus, the entire case can be miniaturized.

  Further, the wristwatch case 1 is protected by providing the buffer member 14 disposed between the exterior member 6 and the protection member 7 and providing gaps S1 to S5 between the exterior member 6 and the protection member 7. When the member 7 receives an external impact, the impact can be buffered by the cushioning member 14, and provided between the exterior member 6 and the protective member 7 when the cushioning member 14 cushions the impact. Contact between the protective member 7 and the exterior member 6 can be prevented by the gaps S1 to S5, and even if the exterior member 6 is a brittle material, breakage of the exterior member 6 can be prevented.

  In this case, in the wristwatch case 1, the exterior member 6 includes a first exterior portion 12 disposed on the side of the case main body 5 and a second exterior portion 13 disposed on the upper portion of the case main body 5. Thus, the outside of the case main body 5 can be reliably and favorably covered by the first exterior portion 12 and the second exterior portion 13, and the first exterior portion 12 is formed even if the exterior member 6 is a brittle material. By being divided into the second exterior part 13 and the second exterior part 13, the processability is good and it can be easily manufactured.

  Further, in the wristwatch case 1, the protection members 7 are disposed in non-contacting state on both side surfaces of the first exterior portion 12 and are attached to the case main body 5 in a pair of first protection portions 16 and the second exterior portion 13. By providing the plurality of second protection portions 17 disposed in a plurality of places in a non-contact manner and attached to the case main body 5, the pair of first protection portions 16 ensures both side surfaces of the first exterior portion 12 In addition, the plurality of second protective portions 17 can protect the second exterior portion 13 reliably and favorably. Further, since the plurality of second protective portions 17 includes the upper surface portion 17a and the side surface portions 17b, the plurality of second protective portions 17 can be bent to receive an impact.

  Further, in the wristwatch case 1, the buffer member 14 is disposed between the first exterior 12 and the first protection 16, the first cushion 18, the second exterior 13, and the second protection. By providing the second buffer portion 19 disposed between the first outer portion 12 and the second portion 17, the gap S1 is provided between the first exterior portion 12 and the first protective portion 16 by the first buffer portion 18. While being able to be, it can provide crevice S2 with the 2nd buffer part 19 between the 2nd exterior part 13 and the 2nd protection part 17.

  Therefore, in the wristwatch case 1, when the first protective portion 16 receives an impact from the side, the impact can be buffered by the first buffer portion 18 and the first buffer portion 18 buffers the impact. At the same time, by the gap S1 provided between the first exterior part 12 and the first protection part 16, the contact of the first protection part 16 with the first exterior part 12 can be prevented, thereby making the brittle material Damage to the first exterior portion 12 can be prevented.

  In this case, the first buffer portion 18 is partially disposed between the convex portion 12 a provided on the outer surface of the first exterior portion 12 and the concave portion 16 c provided on the inner surface of the first protective portion 16. The first buffer portion 18 can be hidden from the gap S1 between the first exterior portion 12 and the first protective portion 16 so that the appearance and design can be enhanced.

  Further, in the wristwatch case 1, when the second protective portion 17 receives an impact from above, the second buffer portion 19 can buffer the impact, and the second buffer portion 19 can buffer the impact. By the gap S2 provided between the second exterior part 13 and the second protection part 17, the contact of the second protection part 17 with the second exterior part 13 can be prevented, whereby the second brittle material is formed. Damage to the exterior 13 can be prevented.

  In this case, the plurality of second protective portions 17 are disposed in a non-contact state at four positions on the upper surface of the second exterior portion 13 at one o'clock side, five o'clock side, seven o'clock side, and eleven o'clock side, The second buffer portion 19 includes an installation recess 17 d provided on the lower surface of each upper surface portion 17 a of the plurality of second protective portions 17 opposed to the upper surface of the second exterior portion 13 and the second outer portion 13 opposed thereto. Since the second buffer portion 19 is disposed in the installation concave portion 13a provided on the upper surface, the second buffer portion 19 can not be seen from the gap S2 between the second exterior portion 13 and the second protective portion 17. This can also enhance the appearance and design.

  Further, in the wristwatch case 1, the buffer member 14 is disposed between the case body 5 and the second exterior portion 13, and the third buffer portion 20 is disposed between the first exterior portion 12 and the second exterior portion 13. And the third shock absorber 20 can provide a gap S3 between the first exterior 12 and the second exterior 13 and the case body 5 A gap S4 can be provided between the second exterior portion 13 and the fourth buffer portion 21.

  For this reason, in the wristwatch case 1, even if the plurality of second protective portions 17 receive an impact from above, and the upper surface portion 17a of the second protective portion 17 pushes down the second exterior portion 13, the third and fourth buffers It can be buffered by sections 20, 21. That is, even if the plurality of second protective portions 17 receive an impact from above, and the upper surface portion 17a of the second protective portion 17 pushes down the second exterior portion 13, the gap S3 and the fourth buffer portions by the third buffer portion 20. By the gap S4 due to 21, it is possible to prevent the second exterior part 13 from contacting the first exterior part 12 and the case main body 5, thereby breaking the first and second exterior parts 12 and 13 of the brittle material. You can prevent.

  Furthermore, in the wristwatch case 1, the first to fourth buffer portions 18 to 21 of the buffer member 14 have a structure in which two types of first and second buffer layers 14 a and 14 b having different hardnesses are stacked. The shock received by the second shock absorbers 16 and 17 can be reliably and well buffered. That is, since the first buffer layer 14a is a silicone rubber having a low hardness of about 30 ° to 50 °, the first buffer layer 14a can be elastically deformed in response to an impact to reliably and favorably absorb the impact. .

  In addition, since the second buffer layer 14b is a high hardness, damping silicone rubber having a damping rate of about 60 °, the first buffer layer 14a is elastically deformed in response to an impact, and the impact is When absorbing, it is possible to disperse the impact force so as not to concentrate on one point. For this reason, since an impact force does not concentrate on one point of the 1st, 2nd exterior parts 12 and 13, preventing breakage of the 1st and 2nd exterior parts 12 and 13 of brittle material certainly and favorably it can.

  As described above, in the wristwatch case 1, since the exterior member 6 is protected from the impact by the protective member 7, the exterior member 6 can be colored using a material such as sapphire, glass, ceramic, etc. Thus, the decorativeness and the colorability can be enhanced, and by exposing the exterior member 6 at the place excluding the protective member 7, it is possible to provide a product having high designability and high commercial value.

  In the embodiment described above, the third buffer portion 20 in which the buffer member 14 is disposed between the first exterior portion 12 and the second exterior portion 13, and between the case main body 5 and the second exterior portion 13. Although the case where both of the fourth buffer portion 21 to be disposed is provided is described, the present invention is not limited to this, and between the first exterior portion 12 and the second exterior portion 13 and the case main body 5 The structure which provided the buffer part in any one between 2nd exterior parts 13 may be sufficient.

  Further, in the embodiment described above, the case where the protective member 7 is formed of a light, highly rigid flexible material such as a carbon material is described, but not limited to this, the protective member 7 may be made of polyamide, polycarbonate or the like. The material may be made of a flexible plastic material of high rigidity or of a rigid, elastic metal material such as stainless steel.

  In the embodiment described above, the case where the invention is applied to a wristwatch has been described. However, the invention is not necessarily required to be a wristwatch, and may be applied to various watches such as travel watches, alarm clocks, clocks, and clocks. it can. Furthermore, the present invention does not necessarily have to be a watch, and can be applied to electronic devices such as mobile phones and mobile terminals.

As mentioned above, although one Embodiment of this invention was described, this invention is not limited to this, The invention described in the claim, and the range of equivalence are included.
The invention described in the claims of the present application is appended below.

(Supplementary note)
The invention according to claim 1 is a case body, an exterior member of a brittle material disposed outside the case body, and a protection disposed on the outer surface of the exterior member without contact and fixed to the case body. It is a case characterized by including a member.

  The invention according to claim 2 is the case according to claim 1, further comprising a buffer member disposed between the exterior member and the protection member to provide a gap between the exterior member and the protection member. The case is characterized by

  The invention according to claim 3 is the case according to claim 2, wherein the exterior member is a first exterior portion disposed on a side portion of the case main body, and a second exterior portion disposed on an upper portion of the case main body. It is a case characterized by including an exterior part.

  The invention according to a fourth aspect is the case according to the third aspect, wherein the protection members are disposed on both side surfaces of the first exterior portion in a non-contact state and are attached to the case main body A case is characterized by comprising: a second protection portion which is disposed in a non-contact state at a plurality of places of the second exterior portion and attached to the case main body.

  The invention according to claim 5 is the case according to claim 4, wherein the second protective portion is an upper surface portion disposed corresponding to the upper surface of the second exterior portion, the second exterior portion, and the second exterior portion. It is a case characterized by including: a side face portion disposed corresponding to each side face with the one exterior portion.

  The invention according to claim 6 is the case according to claim 4 or 5, wherein the buffer member is partially disposed between the first exterior part and the first protection part. The case is characterized by including a buffer portion and a second buffer portion disposed between the second exterior portion and the second protective portion.

  The invention according to claim 7 is the case according to any one of claims 3 to 6, wherein the buffer member is disposed between the first exterior portion and the second exterior portion, or with the case main body. It is a case characterized by further having a 3rd buffer part arranged between said 2nd exterior parts.

  The invention according to claim 8 is the case according to any one of claims 2 to 7, wherein the buffer member is formed by laminating a plurality of buffer layers having different hardnesses.

  The invention described in claim 9 is a timepiece characterized by comprising the case described in any one of claims 1 to 8.

DESCRIPTION OF SYMBOLS 1 watch case 5 case body 6 exterior member 7 protective member 12 first exterior portion 13 second exterior portion 14 buffer member 14 a first buffer layer 14 b second buffer layer 16 first protective portion 17 second protective portion 17 a upper surface portion 17 b side surface Portion 17c Pipe portion 18 to 21 first to fourth buffer portion 22 first screw member 23 second screw member 24 cylindrical portion S1 to S6 Clearance

Claims (9)

Case body,
An exterior member of a brittle material disposed outside the case body;
A protection member which is disposed in a non-contact manner on the outer surface of the exterior member and fixed to the case body;
A case characterized by having.   The case according to claim 1, further comprising: a buffer member disposed between the exterior member and the protection member to provide a gap between the exterior member and the protection member.   The case according to claim 2, wherein the exterior member comprises a first exterior portion disposed on a side portion of the case main body, and a second exterior portion disposed on an upper portion of the case main body. Case characterized by   The case according to claim 3, wherein the protective members are disposed in non-contacting state on both side surfaces of the first exterior portion and attached to the case main body, and a plurality of portions of the second exterior portion. And a second protective portion which is disposed in a non-contact state and attached to the case main body.   5. The case according to claim 4, wherein the second protective portion is provided on an upper surface portion corresponding to the upper surface of the second exterior portion, and on each side surface of the second exterior portion and the first exterior portion. A case characterized by comprising: side portions that are arranged correspondingly.   The case according to claim 4 or 5, wherein the buffer member is a first buffer portion partially disposed between the first exterior portion and the first protective portion, and the second exterior portion. And a second buffer portion disposed between the second protection portion and the second protection portion.   The case according to any one of claims 3 to 6, wherein the buffer member is disposed between the first exterior portion and the second exterior portion or between the case main body and the second exterior portion. A case characterized by further comprising a third buffer arranged.   The case according to any one of claims 2 to 7, wherein the buffer member is formed by laminating a plurality of buffer layers having different hardnesses. A watch comprising the case according to any one of claims 1 to 8.

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