JP2007010506A - Clock-use cover glass and manufacturing method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a novel clock-use cover glass made up such that various varieties in vision are given on the center and outside sections of a clock when the clock is viewed in various directions. <P>SOLUTION: The clock-use cover glass 130 comprises a front face including a plurality of oblique planes and a flat rear face 100B. The plurality of the oblique planes include a plurality of center oblique planes 101-104 which are arranged on respective positions near the center section of the cover glass, and a plurality of outside oblique planes 105-114 which are arrange on respective positions outside the center oblique planes. Angles between the rear face and the outside oblique planes 105-114 are made larger than angles between the rear face and the center oblique planes 101-104. The center oblique planes 101-104 include four hexagonal oblique planes, each outline of which is in the form of a hexagon. A manufacturing method of the clock-use cover glass is also provided. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a watch cover glass in which a plurality of slope portions are formed on the front side. In particular, according to the present invention, the back surface is flat, a plurality of central slope portions are arranged at the center of the front surface, and an outer slope portion having a slope angle larger than the slope angle of the central slope portion is defined as the plurality of central slope portions. The present invention relates to a watch cover glass arranged outside the section. Furthermore, the present invention relates to a method for manufacturing a watch cover glass having a plurality of surfaces formed on the front side. Furthermore, the present invention relates to a method for manufacturing a watch cover glass having a plurality of surfaces on the front side and a marking on the back surface. The present invention can be applied to cover glasses of various watches such as watches, table clocks, wall clocks, and wall clocks.

  In a wristwatch having a conventional polyhedral cover glass, the cover glass is composed of a top surface portion and four slope portions. For example, the top surface portion is a quadrangle (including a square or rhombus), a hexagon, a dodecagon, or the like. Furthermore, it is described that the peripheral slope part can also form a polyhedron continuously (for example, refer patent document 1). In addition, as a conventional method for manufacturing a cover glass for a wristwatch, after forming a concavo-convex shape on the glass surface with a glass hot press, the colored glass side surface convex portions were ground and removed, and the thickness was adjusted with a transparent glass surface as a base. A method of mirror polishing the upper and lower surfaces is known (see, for example, Patent Document 2). In addition, as a conventional marking method for sapphire cover glass for watches, a metal thin film is formed on the base marking surface, and the metal thin film in the marking portion is formed by the thermal energy of the laser beam focused on the metal thin film surface marking portion using a laser irradiator. There is known a method in which the surface of the surface layer portion of the substrate is melted and fine irregularities are engraved, and then the entire metal thin film is removed (see, for example, Patent Document 3).

Japanese Utility Model Publication No. 55-89 (pages 2 and 3, FIGS. 1 to 4) Japanese Patent Laid-Open No. 9-218277 (pages 2 to 3, FIGS. 1 to 7) Japanese Patent Laid-Open No. 7-60464 (pages 2 and 3, FIGS. 1 to 2)

  However, the conventional polyhedral cover glass disclosed in Patent Document 1 has a table surface (a portion of the surface parallel to the back surface) at the center, and the center portion of the watch when the watch is viewed from various directions. I couldn't change how I looked at. In addition, the conventional method for manufacturing a watch cover glass disclosed in Patent Document 2 discloses a method in which, after hot-pressing glass, a colored glass side surface convex portion is ground and removed, and upper and lower surfaces are mirror-polished. However, this method cannot produce a polyhedral cover glass having a complicated shape. In addition, the conventional marking method disclosed in Patent Document 3 merely discloses performing a fine uneven marking process on the surface of the substrate surface layer. This patent document 3 does not disclose a method of manufacturing a marking that is suitable for a polyhedral cover glass having a complicated shape, only by performing a fine uneven marking process on the surface of the substrate surface layer. It was.

  An object of the present invention is to dispose an outer slope portion having a slope angle larger than a slope angle of the central slope portion, wherein a plurality of central slope portions are arranged at a central portion on the surface of the watch cover glass. A novel watch cover glass constructed so that various changes can be made to the appearance of the central portion and the outer portion of the watch when the watch is viewed from various directions by being arranged outside the watch portion. It is to provide. Another object of the present invention is to change the appearance of the marking by providing markings on the back surface of the watch cover glass so as to correspond to a plurality of slope portions provided on the surface of the watch cover glass. It is an object of the present invention to provide a novel watch cover glass that is configured so as to be able to perform the above. Furthermore, another object of the present invention is to arrange a plurality of central slope portions at a central portion, and to place an outer slope portion having a slope angle larger than a slope angle of the central slope portion outside the plurality of central slope portions. An object of the present invention is to provide a method for manufacturing a watch cover glass configured to be arranged. Furthermore, another object of the present invention is to provide a method of manufacturing a watch cover glass having markings formed on the back surface so as to correspond to a plurality of slope portions provided on the surface of the watch cover glass. .

  The present invention relates to a watch cover glass, having a front surface including a plurality of slope portions and a flat back surface, wherein the plurality of slope portions are respectively arranged at positions close to the center portion of the cover glass. An angle formed by the plurality of outer slope portions with respect to the back surface, respectively. The plurality of central slope portions include four hexagonal slope portions each having a hexagonal contour shape.

  In the watch cover glass described above, the four hexagonal slope portions are constituted by a first hexagonal slope portion, a second hexagonal slope portion, a third hexagonal slope portion, and a fourth hexagonal slope portion. The first hexagonal slope portion and the second hexagonal slope portion are configured such that one side overlaps each other, and the overlapping side is parallel to the back surface and the cover The third hexagonal slope portion is arranged on a straight line passing through the center of the glass, and one side of the third hexagonal slope portion overlaps one side of the first hexagonal slope portion, and the other side is The fourth hexagonal slope portion is configured to overlap one side of the second hexagonal slope portion, and one side of the fourth hexagonal slope portion is another side of the first hexagonal slope portion. And the other one side overlaps with the other one side of the second hexagonal slope portion. Good it is. With this configuration, when the wristwatch is viewed from various directions, various changes can be made in the appearance of the central portion and the outer portion of the wristwatch due to the prism effect of the plurality of central slope portions. Therefore, according to the present invention, a watch cover glass having a novel and original appearance can be realized.

  In the watch cover glass, the first hexagonal slope and the second hexagonal slope are formed at an angle of 2.5 to 7 degrees with respect to the back surface. The third hexagonal slope portion and the fourth hexagonal slope portion are preferably formed so as to form an angle of 5.5 degrees to 12.5 degrees with respect to the back surface. In the watch cover glass described above, it is preferable that at least a part of the plurality of outer slopes is formed to form an angle of 7.5 degrees to 18.5 degrees with respect to the back surface. . In the watch cover glass described above, it is preferable that at least a part of the plurality of outer slopes is formed at an angle of 17 degrees to 31 degrees with respect to the back surface. Further, the watch cover glass described above may have a marking formed on the back surface so as to correspond to at least a part of the plurality of slope portions provided on the surface of the cover glass.

  Furthermore, the present invention provides a method for manufacturing a watch cover glass having a front surface and a back surface, wherein a central slope portion composed of four hexagonal slope portions each having a hexagonal outline is positioned near the center portion of the cover glass. Forming on the surface of the cover glass, and forming a plurality of outer slope portions respectively arranged at positions outside the plurality of central slope portions on the surface of the cover glass, And the angle formed by the plurality of outer slope portions with respect to the back surface of the cover glass is larger than the angle formed with respect to the back surface of the central slope portion.

  In the above method for manufacturing a watch cover glass, the four hexagonal slope portions are a first hexagonal slope portion, a second hexagonal slope portion, a third hexagonal slope portion, and a fourth hexagonal shape. The first hexagonal slope part and the second hexagonal slope part are configured such that one side overlaps each other, and the overlapping side is parallel to the back surface. Disposed on a straight line passing through the center of the cover glass, the third hexagonal slope portion has one side overlapping with one side of the first hexagonal slope portion, and the other One side is configured to overlap one side of the second hexagonal slope portion, and the fourth hexagonal slope portion has one side other than the first hexagonal slope portion. And the other side overlaps with the other side of the second hexagonal slope. Preferably configured so. By this method, the prism effect of the plurality of central slope portions can be configured so that various changes can be made in the appearance of the central portion and the outer portion of the wristwatch when the wristwatch is viewed from various directions. A watch cover glass can be manufactured. Therefore, a watch cover glass having a novel and original appearance can be manufactured by the method of the present invention.

  Further, in the above method for manufacturing a watch cover glass, a step of forming a marking on the back surface of the cover glass so as to correspond to at least a part of the plurality of slope portions provided on the surface of the cover glass. Can be added. By using this method for manufacturing a watch cover glass, a watch cover glass having a marking on the back surface can be efficiently manufactured with high processing accuracy.

  In the watch cover glass of the present invention, a plurality of central slope portions are arranged at the center of the surface, and an outer slope portion having a slope angle larger than the slope angle of the central slope portion is arranged outside the plurality of central slope portions. Because of the prism effect of the plurality of central slope portions, when the wristwatch is viewed from various directions, various changes are made to the way the central portion and the outer portion of the wristwatch are seen. Can do. Therefore, according to the present invention, a watch cover glass having a novel and original appearance can be realized. Further, the watch cover glass of the present invention is provided with markings on the back surface so as to correspond to the plurality of slope portions provided on the front surface, and the watch cover glass can be seen when the watch is viewed from various directions. Can be changed. That is, the watch cover glass of the present invention can give a bright and eye-friendly image by making the hexagonal planar shape of the cover glass three-dimensional (Z-axis direction, that is, the cover glass). The three-dimensional shape of the cover glass in a direction perpendicular to the back surface (front surface) of the cover glass can be emphasized). Therefore, according to the present invention, a watch cover glass having an extremely original appearance can be realized.

  Furthermore, by using the method for manufacturing a watch cover glass of the present invention, a plurality of central slope portions are arranged in the central portion, and an outer slope portion having a slope angle larger than the slope angle of the central slope portion is provided as the plurality of slope portions. The watch cover glass disposed outside the central slope portion can be efficiently manufactured with high processing accuracy. Furthermore, by using the method for manufacturing a watch cover glass of the present invention, a watch cover glass having a marking formed on the back surface corresponding to a plurality of slope portions provided on the surface of the watch cover glass is high. It can be manufactured efficiently with processing accuracy.

Embodiments of the present invention will be described below with reference to the drawings.
(1) First embodiment of a watch cover glass of the present invention:
First, a first embodiment of the watch cover glass of the present invention will be described. Referring to FIGS. 1 and 2, in the first embodiment of the watch cover glass of the present invention, the cover glass 130 has a front surface including a plurality of inclined surfaces 101 to 118 and a flat back surface 100B. ing. The cover glass 130 can be formed of hard glass, can be formed of sapphire, or can be formed of a resin such as acrylic.

  The center of the cover glass 130 is defined as the center 100C. A horizontal straight line parallel to the back surface 100B and passing through the center 130C of the cover glass 130 is defined as a straight line (X-X '). It is defined as a vertical straight line (Y-Y ') parallel to the back surface 100B and passing through the center 130C of the cover glass 130. It is parallel to the back surface 100B, passes through the center 130C of the cover glass 130, forms an angle of 45 degrees with respect to the straight line (XX ′), and is 45 degrees clockwise with respect to the X direction (ie, −45 degrees). ) A straight line having the rotated direction as the A direction is defined as a straight line (AA ′). It is parallel to the back surface 100B, passes through the center 130C of the cover glass 130, forms an angle of 45 degrees with respect to the straight line (XX ′), and is 45 degrees counterclockwise with respect to the X direction (ie, +45 degrees). ) A straight line having the rotated direction as the B direction is defined as a straight line (BB ′). It is parallel to the back surface 100B, passes through the center 130C of the cover glass 130, forms an angle of 15 degrees with respect to the straight line (YY ′), and 15 degrees counterclockwise with respect to the Y direction (ie, +15 degrees). ) A straight line having the rotated direction as the C direction is defined as a straight line (CC ′).

  It is parallel to the back surface 100B, passes through the center 130C of the cover glass 130, forms an angle of 15 degrees with respect to the straight line (YY ′), and 15 degrees clockwise (i.e., −15 degrees) with respect to the Y direction. ) A straight line having the rotated direction as the D direction is defined as a straight line (DD ′). It is parallel to the back surface 100B, passes through the center 130C of the cover glass 130, forms an angle of 22.5 degrees with respect to the straight line (XX ′), and 22.5 degrees counterclockwise with respect to the X direction ( That is, a straight line having the direction rotated by +22.5 degrees as the E direction is defined as a straight line (EE ′). It is parallel to the back surface 100B, passes through the center 130C of the cover glass 130, forms an angle of 22.5 degrees with respect to the straight line (XX ′), and is 22.5 degrees clockwise with respect to the X direction (ie, , -22.5 degrees) A straight line having the direction of rotation as the F direction is defined as a straight line (FF ').

  The cover glass 130 is configured so that the contour shape is circular with the center 100C as the center. Alternatively, the outline shape of the cover glass 130 of the present invention may be a quadrangle (including a square and a rectangle), a rhombus, or an oval. Alternatively, the outline shape of the cover glass 130 of the present invention may be another polygonal shape (hexagon, octagon, etc.), a shape constituted by a plurality of straight lines, or a plurality of shapes. The shape comprised by these curves may be sufficient, and the shape comprised so that a some straight line and a some curve might be included may be sufficient.

  In the cover glass 130, the plurality of slope portions are a plurality of (four) central slope portions 101 1 to 101 disposed in a region near the center 100 C of the cover glass 130, that is, in a position near the center portion of the cover glass 130. 104 and a plurality of outer slope portions 105 to 114 disposed at positions outside the plurality of central slope portions, respectively. Furthermore, as shown in FIG. 1, it can comprise so that the outermost peripheral slope part 115-118 each arrange | positioned in the area | region near the outer peripheral part of the cover glass 130 may be included. Or you may comprise so that the outermost peripheral slope part 115-118 may not be formed. The angles formed with respect to the back surface 100B of the outer slope portions 105 to 114 are configured to be larger than the angles formed with respect to the back surface 100B of the central slope portions 101 to 104, respectively.

  The central inclined surface portions 101 to 104 are configured by four hexagonal inclined surfaces each having a hexagonal outline shape. Alternatively, the central slope portions 101 to 104 can be configured by two hexagonal slope portions each having a hexagonal outline shape and two pentagonal slope portions having a pentagonal outline shape. The four hexagonal slopes include a first hexagonal slope 101, a second hexagonal slope 102, a third hexagonal slope 103, and a fourth hexagonal slope 104. Is done. The first hexagonal slope portion 101 and the second hexagonal slope portion 102 are each arranged so that one side overlaps. The overlapping sides are arranged on a straight line (Y-Y ') that is parallel to the back surface 100B and passes through the center 130C of the cover glass 130. The third hexagonal slope portion 103 has one side overlapping one side of the first hexagonal slope portion 101 and the other side being one of the second hexagonal slope portion 102. Arranged to overlap one side. The fourth hexagonal slope portion 104 has one side overlapping the other side of the first hexagonal slope portion 101, and the other side being the second hexagonal slope portion 102. It is comprised so that it may overlap with the other one side.

  The first hexagonal slope portion 101 and the second hexagonal slope portion 102 are preferably formed to form an angle of 2.5 degrees to 7 degrees with respect to the back surface 100B. With this configuration, when the timepiece is viewed from various directions, various changes can be made in the appearance of the central portion and the outer portion of the timepiece. It is particularly preferable that the first hexagonal slope portion 101 and the second hexagonal slope portion 102 are formed so as to form an angle of 5 degrees with respect to the back surface 100B. By configuring in this way, it is possible to realize a watch having a particularly good appearance. The third hexagonal slope portion 103 and the fourth hexagonal slope portion 104 are preferably formed so as to form an angle of 5.5 degrees to 12.5 degrees with respect to the back surface 100B. With this configuration, when the timepiece is viewed from various directions, various changes can be made in the appearance of the central portion and the outer portion of the timepiece. The third hexagonal slope portion 103 and the fourth hexagonal slope portion 104 are particularly preferably formed so as to form an angle of 9 degrees with respect to the back surface 100B. By configuring in this way, it is possible to realize a watch having a particularly good appearance.

  Part of the outer slope portion, that is, the outer slope portion, is preferably formed so that 105 to 110 form an angle of 7.5 to 18.5 degrees with respect to the back surface. With this configuration, when the timepiece is viewed from various directions, various changes can be made in the appearance of the central portion and the outer portion of the timepiece. It is particularly preferable that the outer slopes 105 to 110 are formed so as to form an angle of 12.5 degrees with respect to the back surface. By configuring in this way, it is possible to realize a wristwatch that is particularly attractive. The other part of the outer slope part, that is, the outer slope part 111 to 114 is preferably formed so as to form an angle of 17 degrees to 31 degrees with respect to the back surface.

  With this configuration, when the timepiece is viewed from various directions, various changes can be made in the appearance of the central portion and the outer portion of the timepiece. It is particularly preferable that the outer slopes 111 to 114 are formed so as to form an angle of 20 degrees with respect to the back surface. By configuring in this way, it is possible to realize a watch having a particularly good appearance. The outermost peripheral slope portions 115 to 118 are preferably formed so as to form an angle of 17 degrees to 31 degrees with respect to the back surface. With this configuration, when the timepiece is viewed from various directions, various changes can be made in the appearance of the central portion and the outer portion of the timepiece. It is particularly preferable that the outermost peripheral slope portions 115 to 118 are formed so as to form an angle of 20 degrees with respect to the back surface. By configuring in this way, it is possible to realize a watch having a particularly good appearance.

  When the watch cover glass of the present invention is attached to the watch body, the X direction is the 3 o'clock direction of the watch, the Y ′ direction is the 6 o'clock direction of the watch, the X ′ direction is the 9 o'clock direction of the watch, and the Y direction is the watch timepiece. 12 o'clock direction. Alternatively, when the watch cover glass of the present invention is attached to the watch body, the X direction is the 12 o'clock direction of the watch, the Y ′ direction is the 3 o'clock direction of the watch, the X ′ direction is the 6 o'clock direction of the watch, and the Y direction Can be the 9 o'clock direction of the watch. Alternatively, the watch cover glass of the present invention can be attached to the watch body in other directions.

(2) Second embodiment:
Next, a second embodiment of the watch cover glass of the present invention will be described. In the following description, the difference between the second embodiment of the timepiece cover glass of the present invention and the first embodiment of the timepiece cover glass of the present invention will be mainly described. Therefore, the description about 1st Embodiment of the timepiece cover glass of this invention mentioned above applies mutatis mutandis here.

  Referring to FIGS. 3 and 4, in the second embodiment of the timepiece cover glass of the present invention, the cover glass 230 corresponds to at least a part of the plurality of slope portions provided on the surface thereof. It has the formed marking on the back surface. The cover glass 230 has a front surface including a plurality of slope portions 201 to 218 and a flat back surface 230B. The letter “ga” is formed on the portion of the back surface 230B corresponding to the slope portion 203, the letter “La” is formed on the portion of the back surface 230B corresponding to the slope portion 201, and the character on the portion of the back surface 230B corresponding to the slope portion 203. "Su" is formed. In this configuration, a trademark, a trade name, a catchphrase, an abbreviation, and the like can be displayed by providing markings such as characters, figures, and patterns in areas corresponding to a plurality of slope portions. Since the watch cover glass of the present invention includes a plurality of hexagonal slope portions, for example, as a specific example of the marking, names, abbreviations, nicknames, international organizations related to soccer, domestic organizations related to soccer, etc. Mark / catchphrase can be given. Furthermore, as other specific examples of the above marking, companies that sell names, abbreviations, nicknames, marks, catchphrases, sports equipment, sportswear, etc. of international organizations and domestic organizations that control many types of sports You can give a trademark, trade name, tagline, etc. In addition, other specific examples of the above markings include pictures (designs), names, abbreviations, nicknames, marks, etc. of various characters (characters, animals, plants, etc.) appearing in movies, TV movies, anime, manga, games, etc. Can give.

  Alternatively, the character “glass” is formed on the portion of the back surface 230 </ b> B corresponding to the slope portion 204. In this configuration, a trademark, a trade name, a catchphrase, an abbreviation, and the like can be displayed by providing markings such as characters, figures, and patterns in a region corresponding to one slope portion. Alternatively, a “star-shaped figure” is formed on the portion of the back surface 230B corresponding to the slope 208. In this configuration, a trademark, a pattern, or the like can be displayed by providing a marking such as a graphic of an area corresponding to one or a plurality of slope portions. Characters, figures, patterns, and the like provided on the back surface 230B can be formed by a method such as printing, etching, gold vapor deposition, rhodium vapor deposition, or the like.

(3) Method for producing watch cover glass of the present invention:
Next, the manufacturing method of the timepiece cover glass of the present invention will be described. Referring to FIG. 5, the glass member 100 before processing of the cover glass of the present invention has a flat surface 100T, a flat back surface 100B, and a side surface 100S. The cover glass 130 can be formed of hard glass. The glass member 100 is formed so that the contour shape is circular around the center 100C. As the glass member 100, those having a large negative radius are inappropriate. As a material of the glass member 100, for example, BK-7 or an optical glass system can be used.

  In the following description, the outline formed by processing in each step is indicated by a thick solid line. Moreover, in the following description, the slope part processed by each process can be formed by grinding | polishing process. 6 to 8, the straight line YY ′ is defined in the X-axis direction (right side in FIG. 6) and the X′-axis direction (left side in FIG. 6) of the glass member 100 with the straight line YY ′ as the axis of symmetry. Two slope portions 101 and 102 are formed so that the direction toward the top becomes higher. An angle D101 formed by the inclined surface portion 101 with respect to a plane parallel to the back surface 100B is preferably 2.5 degrees to 7 degrees. The angle D101 is particularly preferably 5 degrees. It is preferable that an angle D102 formed by the slope portion 102 with respect to a plane parallel to the back surface 100B is 2.5 degrees to 7 degrees. The angle D102 is particularly preferably 5 degrees. It is particularly preferable that the angle D101 and the angle D102 are equal.

  Next, referring to FIGS. 9 to 12, a part of the glass member 100 in the Y-axis direction (upper side in FIG. 9) and the Y′-axis direction (lower side in FIG. 9) with the straight line XX ′ as the axis of symmetry. The two slope portions 103 and 104 are formed in a part of the surface so as to be higher toward the straight line XX ′. In this step, processing is performed so that a portion (a so-called ridge portion) constituting one side of the hexagon remains in a portion on the straight line Y-Y ′ close to the center 100C. An angle D103 formed by the slope portion 103 with respect to a plane parallel to the back surface 100B is preferably from 5.5 degrees to 12.5 degrees. The angle D103 is particularly preferably 9 degrees. An angle D104 formed by the inclined surface portion 104 with respect to a plane parallel to the back surface 100B is preferably 5.5 degrees to 12.5 degrees. The angle D104 is particularly preferably 9 degrees. It is particularly preferable that the angle D103 and the angle D104 are equal.

  Reference is now made to FIGS. As shown in FIG. 15, the two outer slope portions 106 and 108 are formed so that the slope angle in the cross-sectional view when cut along the straight line A-A ′ is higher toward the center 100 </ b> C. In addition, as shown in FIG. 16, the two outer slope portions 105 and 107 are formed so that the slope angle in the cross-sectional view when cut along the straight line B-B ′ is higher toward the center 100C. In this step, processing is performed so that a portion (so-called ridge portion) constituting one side of the hexagon remains at a portion near the center 100C at a portion where the slope portion 103 and the slope portion 102 intersect. In this step, processing is performed so that a portion (so-called ridge portion) constituting one side of the hexagon is left in a portion near the center 100C at a portion where the slope portion 103 and the slope portion 101 intersect. In this step, processing is performed so that a portion (so-called ridge portion) constituting one side of the hexagon is left in a portion near the center 100C at a portion where the slope portion 101 and the slope portion 104 intersect. In this step, processing is performed so that a portion (a so-called ridge portion) constituting one side of the hexagon remains at a portion near the center 100C at a portion where the slope portion 104 and the slope portion 101 intersect.

  The angle D105 formed by the inclined surface portion 105 with respect to the plane parallel to the back surface 100B is preferably 7.5 degrees to 18.5 degrees. The angle D105 is particularly preferably 12.5 degrees. The angle D106 formed by the inclined surface portion 106 with respect to the plane parallel to the back surface 100B is preferably 7.5 to 18.5 degrees. The angle D106 is particularly preferably 12.5 degrees. An angle D107 formed by the slope 107 with respect to a plane parallel to the back surface 100B is preferably 7.5 degrees to 18.5 degrees. The angle D107 is particularly preferably 12.5 degrees. An angle D108 formed by the inclined surface portion 108 with respect to a plane parallel to the back surface 100B is preferably 7.5 degrees to 18.5 degrees. The angle D108 is particularly preferably 12.5 degrees. It is particularly preferable that the angle D105, the angle D106, the angle D107, and the angle D108 are equal.

  Reference is now made to FIGS. As shown in FIG. 19, the two outer slope portions 109 and 110 are formed so that the angle of the slope in the cross-sectional view when cut along the straight line X-X ′ is higher toward the center 100 </ b> C. In this step, processing is performed so that a portion (a so-called ridge portion) constituting one side of the hexagon remains at a portion near the center 100C at a portion where the slope portion 102 and the slope portion 105 intersect. In this step, processing is performed so that a portion (a so-called ridge portion) constituting one side of the hexagon remains at a portion near the center 100C at a portion where the slope portion 102 and the slope portion 106 intersect. In this step, processing is performed so that a portion (a so-called ridge portion) constituting one side of the hexagon remains at a portion near the center 100C at a portion where the slope portion 101 and the slope portion 108 intersect. In this step, processing is performed so that a portion (so-called ridge portion) constituting one side of the hexagon remains in a portion near the center 100C at a portion where the slope portion 101 and the slope portion 107 intersect. By this step, two hexagonal slope portions 101 and 102 can be formed. Each of the first hexagonal slope portion 101 and the second hexagonal slope portion 102 is configured such that one side overlaps. The overlapping sides are parallel to the back surface 100B and are arranged on a straight line Y-Y ′.

  An angle D109 formed by the inclined surface 109 with respect to a plane parallel to the back surface 100B is preferably 7.5 degrees to 18.5 degrees. The angle D109 is particularly preferably 12.5 degrees. An angle D110 formed by the inclined surface portion 110 with respect to a plane parallel to the back surface 100B is preferably 7.5 degrees to 18.5 degrees. The angle D110 is particularly preferably 12.5 degrees. It is particularly preferable that the angle D109 and the angle D110 are equal.

  Reference is now made to FIGS. As shown in FIG. 22, the two outer slope portions 111 and 112 are formed so that the angle of the slope in the cross-sectional view when cut along the straight line C-C ′ is higher toward the center 100 </ b> C. In this step, processing is performed so that a portion (so-called ridge portion) constituting one side of the hexagon remains at a portion near the center 100C at a portion where the slope portion 103 and the slope portion 108 intersect. In this step, processing is performed so that a portion (so-called ridge portion) constituting one side of the hexagon remains at a portion near the center 100C at the intersection of the slope portion 104 and the slope portion 106.

  An angle D111 formed by the inclined surface portion 111 with respect to a plane parallel to the back surface 100B is preferably 17 degrees to 31 degrees. The angle D111 is particularly preferably 20 degrees. The angle D112 formed by the inclined surface portion 112 with respect to the plane parallel to the back surface 100B is preferably 17 degrees to 31 degrees. The angle D112 is particularly preferably 20 degrees. It is particularly preferable that the angle D111 and the angle D112 are equal.

  Reference is now made to FIGS. As shown in FIG. 25, the two outer slope portions 113 and 114 are formed so that the slope angle in the cross-sectional view when cut along the straight line D-D 'is higher toward the center 100C. In this step, processing is performed so that a portion (so-called ridge portion) constituting one side of the hexagon remains at a portion near the center 100C at a portion where the slope portion 103 and the slope portion 105 intersect. In this step, processing is performed so that a portion (a so-called ridge portion) constituting one side of the hexagon is left in a portion near the center 100C at a portion where the slope portion 104 and the slope portion 107 intersect. By this process, two hexagonal slope portions 103 and 104 can be formed. The third hexagonal slope portion 103 has one side overlapping one side of the first hexagonal slope portion 101 and the other side being the second hexagonal slope portion 102. It is comprised so that it may overlap with one side. The fourth hexagonal slope portion 104 has one side that overlaps with the other side of the first hexagonal slope portion 101 and the other side that is the second hexagonal slope portion 101. It is comprised so that the other one edge | side of the square slope part 102 may overlap. As described above, the central slopes 101 to 104 are formed of four hexagonal slopes each having a hexagonal outline shape. Alternatively, the central slope portions 101 to 104 can be configured by two hexagonal slope portions each having a hexagonal outline shape and two pentagonal slope portions having a pentagonal outline shape.

  An angle D113 formed by the inclined surface 113 with respect to a plane parallel to the back surface 100B is preferably 17 degrees to 31 degrees. The angle D113 is particularly preferably 20 degrees. An angle D114 formed by the inclined surface portion 114 with respect to a plane parallel to the back surface 100B is preferably 17 degrees to 31 degrees. The angle D114 is particularly preferably 20 degrees. It is particularly preferable that the angle D113 and the angle D114 are equal.

  Reference is now made to FIGS. As shown in FIG. 28, the two outermost slope portions 116 and 118 are formed so that the slope angle in the cross-sectional view when cut along the straight line F-F ′ is higher toward the center 100C. Further, as shown in FIG. 29, the two outermost slope portions 115 and 117 are formed so that the slope angle in the cross-sectional view when cut along the straight line EE ′ is higher toward the center 100C. . An angle D115 formed by the inclined surface 115 with respect to a plane parallel to the back surface 100B is preferably 17 degrees to 31 degrees. The angle D115 is particularly preferably 20 degrees. It is preferable that an angle D116 formed by the inclined surface portion 116 with respect to a plane parallel to the back surface 100B is 17 degrees to 31 degrees. The angle D116 is particularly preferably 20 degrees. The angle D117 formed by the inclined surface portion 117 with respect to the plane parallel to the back surface 100B is preferably 17 degrees to 31 degrees. The angle D117 is particularly preferably 20 degrees. An angle D118 formed by the inclined surface 118 with respect to a plane parallel to the back surface 100B is preferably 17 degrees to 31 degrees. The angle D118 is particularly preferably 20 degrees. It is particularly preferable that the angles D115, D116, D117, and D118 are equal.

  Or you may comprise so that the outermost peripheral slope part 115-118 may not be formed. The angles formed with respect to the back surface 100B of the outer slope portions 105 to 114 are configured to be larger than the angles formed with respect to the back surface 100B of the central slope portions 101 to 104, respectively. With this configuration, when the wristwatch is viewed from various directions, various changes can be made in the way the central portion and the outer portion of the wristwatch are seen.

  In the method for manufacturing a watch cover glass described above, the glass member is subjected to roughing, centering, and finishing by, for example, a method of cutting with a diamond wheel on one side, one side, as in jewelry processing. Each cut surface (that is, the slope portion as described above) is polished.

  Furthermore, in the method for manufacturing a watch cover glass described above, the marking formed so as to correspond to at least a part of the plurality of slope portions provided on the surface of the cover glass 130 is formed on the back surface of the cover glass 130. can do. As described above with reference to the second embodiment of the watch cover glass of the present invention, characters, figures, patterns, etc. are formed on the back surface of the cover glass 130 by a method such as printing, etching, gold deposition, rhodium deposition, or the like. Can be formed.

  Alternatively, as another example of a method for manufacturing a watch cover glass according to the present invention, the watch cover glass according to the present invention can be manufactured by molding using a synthetic resin such as acrylic as a raw material. Furthermore, the watch cover glass according to the present invention can be manufactured by hot press molding using hard glass or the like as a raw material.

  According to the present invention, a timepiece cover glass having a plurality of slope portions formed on the front side can be manufactured. Furthermore, according to the present invention, a watch cover glass having a plurality of surfaces on the front side and a marking on the back surface can be manufactured. The present invention can be applied not only to wristwatches but also to cover glasses of various watches such as table clocks, wall clocks, and wall clocks.

In 1st Embodiment of the cover glass for timepieces of this invention, it is a top view which shows the front side of a cover glass. In 1st Embodiment of the cover glass for timepieces of this invention, it is a side view of a cover glass. In 2nd Embodiment of the cover glass for timepieces of this invention, it is a top view which shows the front side of a cover glass. In 2nd Embodiment of the cover glass for timepieces of this invention, it is a side view of a cover glass. In 1st Embodiment of the cover glass for timepieces of this invention, it is a perspective view which shows the glass member before a process. In 1st Embodiment of the cover glass for timepieces of this invention, it is a top view which shows the glass member in the process middle stage. In 1st Embodiment of the cover glass for timepieces of this invention, it is sectional drawing which shows the outline shape when it fractures | ruptures in line | wire X-X 'in FIG. 6 of the glass member in the middle of a process. In 1st Embodiment of the cover glass for timepieces of this invention, it is a perspective view which shows the shape in FIG. 6 of the glass member in the middle of a process. In 1st Embodiment of the cover glass for timepieces of this invention, it is a top view which shows the glass member in the process middle stage. In 1st Embodiment of the cover glass for timepieces of this invention, it is a side view which shows the outline shape when it fractures | ruptures in the line X-X 'in FIG. 9 of the glass member in the middle of a process. In 1st Embodiment of the cover glass for timepieces of this invention, it is sectional drawing which shows the outline shape when it fractures | ruptures in the line Y-Y 'in FIG. 9 of the glass member in the middle of a process. In 1st Embodiment of the cover glass for timepieces of this invention, it is a perspective view which shows the shape in FIG. 9 of the glass member in the middle of a process. In 1st Embodiment of the cover glass for timepieces of this invention, it is a top view which shows the glass member in the process middle stage. In 1st Embodiment of the cover glass for timepieces of this invention, it is a front view which shows the shape in FIG. 13 of the glass member in the process middle stage. FIG. 14 is a cross-sectional view showing a contour shape when the glass cover glass for a timepiece according to the present invention is broken at a line A-A ′ in FIG. FIG. 14 is a cross-sectional view showing an outline shape when the glass cover glass of the present invention is broken at a line B-B ′ in FIG. In 1st Embodiment of the cover glass for timepieces of this invention, it is a perspective view which shows the shape in FIG. 13 of the glass member in the middle of a process. In 1st Embodiment of the cover glass for timepieces of this invention, it is a top view which shows the glass member in the process middle stage. In 1st Embodiment of the cover glass for timepieces of this invention, it is a front view which shows the shape in FIG. 18 of the glass member in the middle of a process. In 1st Embodiment of the cover glass for timepieces of this invention, it is a perspective view which shows the shape in FIG. 18 of the glass member in the middle of a process. In 1st Embodiment of the cover glass for timepieces of this invention, it is a top view which shows the glass member in the process middle stage. In 1st Embodiment of the cover glass for timepieces of this invention, it is sectional drawing which shows the outline shape when it fractures | ruptures in the line C-C 'in FIG. 21 of the glass member in the middle of a process. In 1st Embodiment of the cover glass for timepieces of this invention, it is a perspective view which shows the shape in FIG. 21 of the glass member in the middle of a process. In 1st Embodiment of the cover glass for timepieces of this invention, it is a top view which shows the glass member in the process middle stage. FIG. 25 is a cross-sectional view showing an outline shape when the glass cover glass of the present invention is broken at a line D-D ′ in FIG. 24 of the glass member in the middle of processing in the first embodiment of the timepiece cover glass of the present invention. In 1st Embodiment of the cover glass for timepieces of this invention, it is a perspective view which shows the shape in FIG. 24 of the glass member in the middle of a process. In 1st Embodiment of the cover glass for timepieces of this invention, it is a top view which shows the glass member in the process middle stage. In 1st Embodiment of the cover glass for timepieces of this invention, it is sectional drawing which shows the outline shape when it fractures | ruptures in the line F-F 'in FIG. 27 of the glass member in the middle of a process. In 1st Embodiment of the cover glass for timepieces of this invention, it is sectional drawing which shows the outline shape when it fractures | ruptures in the line E-E 'in FIG. 27 of the glass member in the middle of a process. In 1st Embodiment of the cover glass for timepieces of this invention, it is a perspective view which shows the shape in FIG. 27 of the glass member in the middle of a process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Glass member 100B Back surface 100S Side surface 100T Surface 130 Cover glass 101-118 Slope part 201-218 Slope part 230 Cover glass 230B Back surface

Claims (9)

In watch cover glass,
A front surface including a plurality of slope portions and a flat back surface;
The plurality of slope portions include a plurality of center slope portions respectively disposed at positions close to the center portion of the cover glass, and a plurality of outer slope portions respectively disposed at positions outside the plurality of center slope portions. ,
The angles formed by the plurality of outer slope portions with respect to the back surface are each configured to be larger than the angle formed with respect to the back surface of the central slope portion,
The plurality of central slope portions include four hexagonal slope portions each having a hexagonal outline shape.
A watch cover glass characterized by that.   The four hexagonal slope portions are constituted by a first hexagonal slope portion, a second hexagonal slope portion, a third hexagonal slope portion, and a fourth hexagonal slope portion, and the first hexagonal slope portion. The slope portion and the second hexagonal slope portion are configured such that one side overlaps each other, and the overlapping side is parallel to the back surface and passes through the center of the cover glass. The third hexagonal slope portion is arranged such that one side thereof overlaps with one side of the first hexagonal slope portion, and the other side is the second hexagonal slope portion. The fourth hexagonal slope portion is configured to overlap with one side of the first hexagonal slope portion, and the other side of the first hexagonal slope portion overlaps the other side. 2. The structure according to claim 1, wherein one side is configured to overlap another one side of the second hexagonal slope portion. Watch for the cover glass of the placement.   The first hexagonal slope and the second hexagonal slope are formed at an angle of 2.5 to 7 degrees with respect to the back surface, and the third hexagonal slope and the third hexagonal slope 3. The timepiece according to claim 2, wherein the fourth hexagonal slope portion is formed to form an angle of 5.5 degrees to 12.5 degrees with respect to the back surface. 4. Cover glass.   The timepiece according to claim 2, wherein at least a part of the plurality of outer slopes is formed to form an angle of 7.5 degrees to 18.5 degrees with respect to the back surface. Cover glass.   3. The timepiece cover glass according to claim 2, wherein at least a part of the plurality of outer slope portions is formed to form an angle of 17 degrees to 31 degrees with respect to the back surface.   6. The marking according to claim 1, further comprising a marking formed on the back surface so as to correspond to at least a part of the plurality of slope portions provided on the surface of the cover glass. Cover glass for watches. In a method for manufacturing a watch cover glass having a front surface and a back surface,
Forming a central slope portion consisting of four hexagonal slope portions each having a hexagonal contour shape on the surface of the cover glass so as to be disposed at a position close to the center portion of the cover glass;
Forming a plurality of outer slope portions respectively disposed at positions outside the plurality of central slope portions on the surface of the cover glass,
The angles formed by the plurality of outer slope portions with respect to the back surface of the cover glass are each configured to be larger than the angle formed with respect to the back surface of the central slope portion.
The manufacturing method characterized by the above-mentioned.   8. The method according to claim 7, wherein the four hexagonal slope portions are a first hexagonal slope portion, a second hexagonal slope portion, a third hexagonal slope portion, and a fourth hexagonal slope portion. Each of the first hexagonal slope and the second hexagonal slope is configured such that one side overlaps, and the overlapping side is parallel to the back surface and The third hexagonal slope portion is arranged on a straight line passing through the center of the cover glass, and one side of the third hexagonal slope portion overlaps with one side of the first hexagonal slope portion, and the other one side Is configured to overlap with one side of the second hexagonal slope portion, and the fourth hexagonal slope portion has one side that is the other of the first hexagonal slope portion. It is configured such that it overlaps with the other side and the other one side overlaps with the other one side of the second hexagonal slope portion. Production wherein the.   The method according to claim 7, further comprising a step of forming a marking on the back surface of the cover glass so as to correspond to at least a part of the plurality of slope portions provided on the surface of the cover glass. The manufacturing method characterized by the above-mentioned.

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