Clock

[0055] (First embodiment)

[0056] Hereinafter, the radio controlled timepiece according to the first embodiment of the present invention will be described based on the drawings.

[0057] Fig. 1 is a side cross-sectional view showing the outline of a radio controlled timepiece according to a first embodiment of the present invention.

[0058] Fig. 2 is a perspective view showing the outline of the case of the radio controlled timepiece of the above-mentioned embodiment.

[0059] image 3 It is an exploded perspective view of the case of the radio controlled timepiece of the above-mentioned embodiment.

[0060] Figure 4 It is an enlarged cross-sectional view of a part of the peripheral portion of the housing of the radio controlled timepiece of the above-mentioned embodiment.

[0061] Figure 5 It is a cross-sectional view showing the fixing structure of the peripheral portion of the housing of the radio controlled timepiece of the above-mentioned embodiment.

[0062] As shown in FIG. 1, the radio controlled timepiece 1 of the present embodiment has a case 100, an antenna 200 provided inside the case 100, and a movement 210 as a timepiece body.

[0063] The housing 100 has a crystal 110, a back cover 120 arranged opposite to the crystal 110, and a housing part 130 sandwiched by the crystal 110 and the back cover 120.

[0064] As shown in Figure 1 to Figure 5 As shown, the crystal 110 has an edge portion 111 as a glass holding portion and a crystal glass 112.

[0065] The edge portion 111 is formed in a substantially annular shape using a strong material such as a metal member.

[0066] On the inner peripheral surface of the edge portion 111, a glass mounting portion 111A is provided along the circumferential direction, and a watch glass 112 is mounted on the upper surface side of the glass mounting portion 111A. In addition, a gasket 113 is sandwiched between the inner peripheral surface (glass holding surface 111B) of the edge portion 111 and the outer peripheral surface of the crystal glass 112.

[0067] Furthermore, on the outer peripheral edge side of the lower surface of the edge portion 111 (the surface on the back cover 120 side), a crystal side holding portion 111C that holds the case portion 130 is formed. This crystal side holding portion 111C has: a crystal side contact piece 111D protruding to the back cover 120 side (refer to Figure 5 ), and the mirror side holding surface 111E formed on the outer peripheral side of the mirror side contact piece 111D.

[0068] The crystal side contact pieces 111D are provided at, for example, four locations in the circumferential direction of the crystal side holding portion 111C, and are positioned by contacting the inner peripheral surface of the housing portion 130. Although the structure provided with four crystal side contact pieces 111D is shown, it is not limited to this. For example, it may be three, or it may be a configuration in which five or more are provided, or it may be formed continuously along the circumferential direction of the edge portion 111.

[0069] In addition, on the crystal side holding surface 111E, a crystal side holding groove 111F as a groove opening to the back cover 120 side is formed substantially in the circumferential direction. In this crystal side holding groove 111F, a crystal side gasket member 114 as a cushioning member is mounted, and the crystal side gasket member 114 is formed of a synthetic resin member such as rubber and has elasticity. The crystal side gasket member 114 is formed, for example, in a substantially circular cross section, and its radial dimension is formed to be substantially the same as the groove width dimension of the crystal side holding groove 111F. As a result, when a stress in the axial direction is applied to the crystal side gasket member 114, the direction substantially orthogonal to the axial direction is restricted by the groove wall of the crystal side holding groove 111F, so the elastic force in the axial direction increases.

[0070] Furthermore, in a state where the crystal side contact piece 111D abuts against the inner peripheral surface of the housing portion 130 and is positioned, the crystal side gasket member 114 is interposed between the crystal side holding surface 111E and the back cover 120. By holding the housing part 130, the housing part 130 is fixed to the crystal side holding part 111C.

[0071] And, as Figure 5 As shown, on the inner peripheral side of the mirror side holding portion 111C of the edge portion 111, four rear cover fixing portions 111G protruding to the lower surface side are integrally formed. These rear cover fixing parts 111G are formed with fixing screw holes 111H on the lower surface opposed to the rear cover 120. Furthermore, the fastening screw 150 inserted from the lower surface side of the rear cover 120 is screwed into the fixing screw hole 111H in a state where the lower surface of the rear cover fixing portion 111G abuts against the upper surface of the rear cover 120, These rear cover fixing parts 111G are fixed on the rear cover 120. In addition, in the present embodiment, although the rear cover fixing portion 111G is provided at a position substantially opposed to the crystal side contact piece 111D, it is not limited to this, and the rear cover fixing portion 111G may be used. It is not opposed to the surface lens side contact piece 111D. In addition, the number of the rear cover fixing portions 111G is not limited to four, as long as it has a configuration in which at least three or more are provided, for example, it may be three or a configuration in which five or more are provided.

[0072] The crystal glass 112 is mounted and bonded to the glass mounting portion 111A of the edge portion 111. At this time, since the gasket 113 is interposed between the crystal glass 112 and the glass holding surface 111B of the edge portion 111, water can be prevented from entering between the edge portion 111 and the crystal glass 112, thereby ensuring sufficient water resistance.

[0073] The back cover 120 has a substantially disc-shaped back cover main body 121 as a holding part, and a glass cover 122 held by the back cover main body 121.

[0074] The back cover main body 121 is formed of a strong material such as a metal material. A glass holding hole 121A having a substantially square shape is formed in a substantially central portion of the rear cover main body 121. A glass positioning piece 121B protruding inward is formed on the edge of the upper surface side of the glass holding hole 121A. On the lower surface side of the glass positioning piece 121B, a glass cover 122 having a substantially square shape having substantially the same shape as the glass holding hole 121A is positioned and fixed by, for example, an adhesive. In addition, on the lower surface side of the inner peripheral surface of the glass holding hole 121A, a glass cover holding surface 121C that holds the peripheral surface of the glass cover 122 is formed. This glass cover holding surface 121C holds the peripheral surface of the glass cover 122 with a gasket 123 interposed therebetween.

[0075] In addition, on the outer peripheral edge side of the upper surface of the rear cover 120, as shown in Figure 1, Figure 4 and Figure 5 As shown, a rear cover side holding portion 121D holding the housing portion is formed. The back cover side holding portion 121D has a back cover side contact piece 121E protruding toward the crystal 110 side, and a back cover side holding surface 121F formed on the outer peripheral side of the back cover side contact piece 121E.

[0076] The back cover side contact piece 121E is formed along the circumferential direction of the outer peripheral part of the back cover side holding part 121D. The back cover side contact piece 121E abuts against the inner peripheral surface of the housing part 130 to position the housing part 130. In addition, although an example is shown in which the back cover side contact piece 121E is formed in the entire circumferential direction of the back cover side holding portion 121D, it is not limited to this, and may be the same as the crystal side contact piece 111D, for example, It is formed as a structure etc. which are provided in four places along the circumferential direction of the back cover side holding part 121D, for example.

[0077] The back cover side holding surface 121F has a back cover side holding groove 121G as a groove portion that opens to the crystal 110 side substantially along the circumferential direction of the back cover side holding portion 121D. In the rear cover side holding groove 121G, a rear cover side gasket member 124 as a cushioning member is attached, and the rear cover side gasket member 124 is formed of a synthetic resin member such as rubber and has elasticity. The back cover side gasket member 124 is formed, for example, in a substantially circular cross section like the crystal side gasket member 114, and its radial dimension is formed to be approximately the same as the groove width dimension of the back cover side holding groove 121G. As a result, the back cover side gasket member 124 is restricted by the groove wall of the back cover side holding groove 121G in the direction substantially orthogonal to the axial direction when a stress in the axial direction is applied, so that the elastic force in the axial direction is increased.

[0078] Furthermore, in a state where the back cover side contact piece 121E is in contact with the inner peripheral surface of the housing portion 130 for positioning, the back cover side gasket member 124 is interposed between the back cover side holding surface 121F and the crystal 110 The watch lens side holding surface 111E sandwiches the case portion 130, and thereby, the case portion 130 is fixed to the back cover side holding portion 121D.

[0079] Again, such as Figure 5 As shown, on the back cover main body 121, at positions opposite to the back cover fixing portion 111G of the crystal 110, screw insertion holes 121H through which the above-mentioned fastening screws 150 can be inserted are respectively provided.

[0080] In these screw insertion holes 121H, as described above, the fastening screws 150 are inserted, and the fastening screws are screwed into the fixing screw holes 111H of the rear cover fixing portion 111G. Thereby, the back cover 120 and the crystal 110 are fixed in a state in which the housing part 130 is sandwiched.

[0081] In addition, on the main body 121 of the back cover, such as image 3 As shown in FIG. 6, an insertion hole (not shown) that can be inserted into the shaft of the crown 160 as the operation part is provided.

[0082] The housing portion 130 is formed of glass into a substantially cylindrical shape, and is sandwiched between the edge portion 111 of the crystal 110 and the back cover 120. At this time, as described above, the housing portion 130 is sandwiched between the crystal 110 and the back cover 120 with the crystal side gasket member 114 and the back cover side gasket member 124 interposed therebetween. Thereby, even if stress is applied from the crystal 110 and the back cover 120, the stress is absorbed by the gasket members 114 and 124, and a large stress is not applied to the glass case 130, and damage and the like are prevented.

[0083] The crown 160 has its shaft inserted into the insertion hole as described above, and is connected to the movement 210 as a timepiece body provided inside the casing 100. As the crown 160, for example, it may be configured to be able to advance and retreat freely with respect to the movement 210, and to output an operation signal corresponding to the advance and retreat state to a control circuit unit not shown in the diagram provided inside the movement 210, Furthermore, the configuration may be configured to be rotatable and output an operation signal corresponding to the rotation state to the control circuit section, or may be configured to be operated by another operation method.

[0084] In addition, between the crystal 110 and the movement 210, a dial 140 is arranged opposite to the crystal glass 112. The dial 140 is formed of a non-magnetic member such as synthetic resin, and is fixed to the upper surface side of the movement 210. In addition, a pointer insertion hole (not shown) is formed substantially in the center of the dial 140. In this pointer insertion hole, the shaft of the pointer 170 arranged on the dial 140 is inserted.

[0085] As shown in FIG. 1, the antenna 200 has a magnetic core 201 and a coil 202 wound around the magnetic core 201. The antenna 200 is formed in a substantially circular arc shape along the inner peripheral surface of the housing 130, for example. The antenna 200 receives a standard radio wave with time information transmitted from a predetermined standard radio wave output station as a radio wave (external wireless information), and outputs the received information to a control circuit unit (not shown) built in the movement 210.

[0086] The movement 210 is stored inside the casing 100 and is fixed at a predetermined position inside the casing 100.

[0087] The movement 210 has: a control circuit unit (not shown) that processes the standard radio waves received through the antenna 200; a stepping motor (not shown) driven by the control of the control circuit unit; and a stepping motor that is driven by the stepping motor The hands 170 (second hand 171, hour hand 173, and minute hand 172: refer to FIG. 1) that move by driving force. In addition, the movement 210 counts the time by a counter (not shown) incorporated in the control circuit unit, and outputs a predetermined pulse signal to the stepping motor based on the counted time to cause the pointer 170 to operate. In addition, the movement 210 appropriately drives the stepping motor based on the time information of the standard radio wave received through the antenna 200, and performs control to move the pointer 170 to the pointer position corresponding to the time information of the standard radio wave.

[0088] (Assembly method of the outer shell of the radio controlled timepiece)

[0089] Next, an example of an assembling method of the case 100 of the radio controlled timepiece 1 described above will be described.

[0090] When assembling the above-mentioned radio controlled timepiece 1, the crystal glass 112 is mounted on the edge 111 of the crystal 110 in advance to assemble the crystal 110, and the glass cover 122 is mounted on the main body 121 of the back cover 120 to assemble the back cover 120. Then, the watch lens side gasket member 114 is installed in the watch lens side holding groove 111F of the watch lens 110, and the back cover side gasket member 124 is installed in the back cover side holding groove 121G of the back cover 120.

[0091] Next, the movement 210 is installed relative to the crystal 110, and the pointer 170 and the dial 140 are already installed on the movement 210.

[0092] Then, the housing part 130 is mounted on the mirror-side holding surface 111E of the crystal 110. At this time, the lens side contact piece 111D is brought into contact with the inner peripheral surface of the housing portion 130 to position the housing portion 130.

[0093] Next, a back cover 120 is placed on the housing part 130, and the housing part 130 is sandwiched by the back cover 120 and the crystal 110. At this time, the back cover side contact piece 121E of the back cover 120 is brought into contact with the inner peripheral surface of the housing portion 130.

[0094] After that, the fastening screw 150 is inserted through the screw insertion hole 121H of the back cover 120 and screwed into the fixing screw hole 111H provided on the back cover fixing portion 111G of the crystal 110. By tightening the fastening screw 150, the housing part 130 is firmly clamped and fixed by the crystal 110 and the back cover 120. At this time, since the housing portion 130 is sandwiched between the watch lens 110 and the back cover 120 via the watch lens side gasket member 114 and the back cover side gasket member 124, the elastic deformation of these gasket members 114, 124 affects the housing The load of the part 130 is absorbed.

[0095] (Effects of Radio Controlled Clocks)

[0096] As described above, in the radio controlled timepiece 1 of the above-mentioned embodiment, the housing 100 has: a crystal 110 having a crystal glass 112; a back cover 120 opposed to the crystal 110; and a back cover 120 sandwiched between the watch mirror 110 and the back cover 120. The glass housing 130 is a non-magnetic member that is held. In addition, the housing 100 is provided with an antenna 200 capable of receiving standard radio waves; time setting is performed based on the time information of the standard radio waves received through the antenna 200, and the pointer 170 is operated based on the time counted by the counter. The movement 210.

[0097] Therefore, since the housing portion 130 is formed of a non-magnetic member, the standard radio waves are not blocked, and the standard radio waves can be received well by the antenna 200, and the reception sensitivity of the antenna 200 can be improved. In addition, even when the radio-controlled timepiece 1 is used as a wristwatch and the back cover 120 is in contact with the wrist, the housing 130 does not contact the human body. Therefore, even when radio waves affected by the human body are used, such as GPS timepieces, It is also possible to allow radio waves to pass through the housing portion 130 well, and it is possible to achieve good reception sensitivity. In addition, even when the back cover 120 of the radio controlled timepiece 1 opposite to the crystal 110 is placed on a base formed of a non-magnetic member or the like, for example, the housing portion 130 is a non-magnetic member, so it can pass through it. The housing part 130 receives radio waves, and therefore can make the reception sensitivity better.

[0098] Furthermore, the housing part 130 is formed of annular glass.

[0099] Therefore, compared with a case where the housing portion 130 is formed of, for example, substantially C-shaped glass or the like, good strength can be ensured. In addition, standard radio waves can be transmitted through the entire circumference of the housing portion 130, and the receiving sensitivity of the antenna can be further improved.

[0100] In addition, the housing part 130 is formed of glass.

[0101] Therefore, the inside of the timepiece can be visually confirmed from the side. In addition, the design can be improved by the high-quality sense unique to glass, and the radio-controlled timepiece 1 with excellent craftsmanship can be provided.

[0102] In addition, the back cover 120 has a glass cover 122 made of glass and a back cover main body 121 that holds the outer peripheral surface of the glass cover 122.

[0103] Therefore, even in the case where the antenna 200 is installed near the back cover, the reception sensitivity of the antenna 200 can be improved compared to a case where the entire back cover 120 is formed of a magnetic member such as metal.

[0104] Also, the dial 140 is formed of a non-magnetic member.

[0105] Therefore, even when the antenna 200 is arranged close to the dial 140, compared with the case where the dial 140 is made of metal, radio wave reception is not blocked by the dial 140, and good reception sensitivity can be obtained.

[0106] In addition, the back cover main body 121 of the back cover 120 has a penetration hole into which the shaft of the crown 160 is inserted.

[0107] Therefore, since a through insertion hole is provided in the strong back cover main body 121, and the shaft of the crown 160 is inserted through the through insertion hole, there is no need to provide an operation hole in the housing 130 formed of glass. , Can prevent the strength of the housing part 130 from decreasing. In addition, by providing a penetration hole in the back cover main body 121 formed of metal of the back cover 120, the durability of the timepiece can be well maintained without reducing the durability of the back cover 120.

[0108] Furthermore, the crown 160 is formed of a non-magnetic member. Therefore, even when the antenna 200 is installed near the crown 160, radio waves will not be blocked by the crown 160, so the reception sensitivity of the antenna 200 can be further improved.

[0109] In addition, the housing portion 130 is sandwiched between the crystal 110 and the back cover 120 via the crystal side gasket member 114 and the back cover side gasket member 124.

[0110]Therefore, between the housing part 130 and the crystal 110, and between the housing part 130 and the back cover 120, the gasket members 114 and 124 are sealed, and good waterproofness can be obtained. In addition, when the housing part 130 is clamped by the crystal 110 and the back cover 120, the housing part 130 does not directly abut on the crystal 110 and the back cover 120 due to the presence of the gasket members 114 and 124, and is applied to the housing The stress on the portion 130 can also be dispersed by the gasket members 114 and 124, which can prevent the casing portion 130 from being damaged when the casing 100 is assembled.

[0111] In addition, the watch lens side gasket member 114 and the back cover side gasket member 124 are respectively provided along the ring-shaped watch lens side holding groove 111F and the back cover side holding groove 121G that are provided to face each other.

[0112] Therefore, the gasket members 114 and 124 are preferably arranged between the watch lens 110 and the housing 130 and between the back cover 120 and the housing 130 without shifting in the radial direction, for example. Therefore, it is possible to prevent a drop in waterproofness and a drop in strength due to the displacement of the gasket members 114 and 124, and also to improve the appearance.

[0113] In addition, these gasket members 114 and 124 are formed to have a substantially circular cross section, and the radial dimension is formed to be approximately the same as the groove width dimension of the crystal side holding groove 111F and the back cover side holding groove 121G. Therefore, when these gasket members 114, 124 are installed in the watch lens side holding groove 111F and the back cover side holding groove 121G, and the housing part 130 is clamped by the watch lens 110 and the back cover 120, the gasket parts 114, 124 are The elastic deformation in the radial direction is restricted by the groove walls of the lens side holding groove 111F and the back cover side holding groove 121G, and the elastic force in the axial direction can be increased. Therefore, the application of stress to the housing part 130 can be prevented more satisfactorily, and the damage of the housing part 130 can be prevented more reliably.

[0114] Furthermore, the screw 150 is inserted through the screw insertion hole 121H provided in the back cover 120, and is screwed into the fixing screw hole 111H of the back cover fixing portion 111G of the crystal 110, thereby clamping the housing portion 130. Assemble the housing 100.

[0115] Therefore, the back cover 120 and the crystal 110 can be securely and firmly fixed by screws. At this time, as described above, since the housing portion 130 is sandwiched between the crystal 110 and the back cover 120 via the washer members 114 and 124, even if a large stress is applied in the axial direction by screw fastening, it can be By dispersing the stress by the gasket members 114 and 124, the stress on the housing portion 130 can be reduced and damage can be prevented.

[0116] (Second embodiment)

[0117] Hereinafter, the radio controlled timepiece according to the second embodiment of the present invention will be explained based on the drawings.

[0118] Fig. 6 is a side sectional view showing the outline of a timepiece according to a second embodiment of the present invention.

[0119] Fig. 7 is a perspective view showing the outline of the case of the timepiece according to the second embodiment.

[0120] Figure 8 It is an exploded perspective view of the case of the timepiece of the second embodiment described above.

[0121] Picture 9 It is an enlarged cross-sectional view of a part of the peripheral portion of the case of the timepiece of the second embodiment described above.

[0122] Picture 10 It is a cross-sectional view showing the fixing structure of the peripheral portion of the housing of the timepiece of the second embodiment described above.

[0123] (The composition of the clock)

[0124] As shown in FIG. 6, the timepiece 1A of the second embodiment has a case 100 and a movement 210 as a timepiece body.

[0125] The housing 100 has a crystal 110, a back cover 120 arranged opposite to the crystal 110, and a housing part 130 sandwiched by the crystal 110 and the back cover 120.

[0126] Figure 6 to Picture 10 As shown, the crystal 110 has an edge portion 111 as a glass holding portion and a crystal 112.

[0127] The edge portion 111 is formed into a substantially annular shape using a strong material such as a metal member.

[0128] On the inner peripheral surface of the edge portion 111, a glass mounting portion 111A is provided along the circumferential direction, and a watch glass 112 is mounted on the upper surface side of the glass mounting portion 111A. In addition, a gasket 113 is interposed between the inner peripheral surface (glass holding surface 111B) of the edge portion 111 and the outer peripheral surface of the crystal glass 112.

[0129] Further, on the outer peripheral edge side of the lower surface of the edge portion 111 (the surface on the back cover 120 side), a mirror side holding portion 111C that holds the first glass portion 132 of the case portion 130 is formed. This crystal side holding portion 111C has: a crystal side contact piece 111D protruding to the back cover 120 side (refer to Picture 10 ), and the mirror side holding surface 111E formed on the outer peripheral side of the mirror side contact piece 111D.

[0130] The crystal side contact pieces 111D are provided at, for example, four locations in the circumferential direction of the crystal side holding portion 111C, and are positioned by contacting the inner peripheral surface of the housing portion 130. Although the structure provided with four crystal side contact pieces 111D is shown, it is not limited to this. For example, it may be three, or it may be a configuration in which five or more are provided, or it may be formed continuously along the circumferential direction of the edge portion 111.

[0131] In addition, on the crystal side holding surface 111E, a crystal side holding groove 111F as a groove opening to the back cover 120 side is formed in the circumferential direction. In this crystal-side holding groove 111F, a crystal-side gasket member 114 as a cushioning member is attached. The crystal-side gasket member 114 is formed of a synthetic resin member such as rubber and has elasticity. The crystal side gasket member 114 is formed, for example, in a substantially circular cross section, and its radial dimension is formed to be approximately the same as the groove width dimension of the crystal side holding groove 111F. As a result, since the crystal side gasket member 114 is restricted by the groove wall of the crystal side holding groove 111F in the direction substantially orthogonal to the axial direction when the stress in the axial direction is applied, the elastic force in the axial direction increases.

[0132] Furthermore, in a state where the crystal side contact piece 111D abuts against the inner peripheral surface of the housing portion 130 for positioning, the crystal side gasket member 114 is interposed between the crystal side holding surface 111E and the back cover 120. To sandwich the case portion 130, the case portion 130 is fixed to the crystal side holding portion 111C.

[0133] And, as Picture 10 As shown, on the inner peripheral side of the mirror side holding portion 111C of the edge portion 111, four rear cover fixing portions 111G protruding to the lower surface side are integrally formed. These rear cover fixing parts 111G are formed with fixing screw holes 111H on the lower surface facing the rear cover 120. Furthermore, the fastening screw 150 inserted from the lower surface side of the rear cover 120 is screwed into the fixing screw hole 111H in a state where the lower surface of the rear cover fixing portion 111G abuts against the upper surface of the rear cover 120, These rear cover fixing parts 111G are fixed on the rear cover 120. In addition, in this embodiment, although the rear cover fixing portion 111G is provided at a position substantially opposite to the crystal side contact piece 111D, it is not limited to this, and the rear cover fixing portion 111G may be used. It is not opposed to the surface lens side contact piece 111D. In addition, the number of the rear cover fixing portion 111G is not limited to four, as long as it has a configuration in which at least three or more are provided, for example, it may be three or a configuration in which five or more are provided.

[0134] The crystal glass 112 is mounted and bonded to the glass mounting portion 111A of the edge portion 111. At this time, since the gasket 113 is interposed between the crystal glass 112 and the glass holding surface 111B of the edge portion 111, water can be prevented from entering between the edge portion 111 and the crystal glass 112, thereby ensuring sufficient water resistance.

[0135] The back cover 120 has a substantially disc-shaped back cover main body 121 as a holding part, and a glass cover 122 held by the back cover main body 121.

[0136] The back cover main body 121 is formed of a strong material such as a metal material. A glass holding hole 121A having a substantially square shape is formed in a substantially central portion of the rear cover main body 121. A glass positioning piece 121B protruding inward is formed on the edge of the upper surface side of the glass holding hole 121A. On the lower surface side of the glass positioning piece 121B, a substantially square-shaped glass cover 122 having substantially the same shape as the glass holding hole 121A is positioned and fixed with, for example, an adhesive. In addition, on the lower surface side of the inner peripheral surface of the glass holding hole 121A, a glass cover holding surface 121C that holds the peripheral surface of the glass cover 122 is formed. This glass cover holding surface 121C holds the peripheral surface of the glass cover 122 via the gasket 123.

[0137] In addition, on the upper surface side of the outer peripheral edge of the rear cover 120, as shown in FIG. 6, Picture 9 and Picture 10 As shown, a rear cover side holding portion 121D holding the housing portion is formed. The back cover side holding portion 121D has a back cover side contact piece 121E protruding toward the crystal 110 side, and a back cover side holding surface 121F formed on the outer peripheral side of the back cover side contact piece 121E.

[0138] The back cover side contact piece 121E is formed along the circumferential direction of the outer peripheral part of the back cover side holding portion 121D. The back cover side contact piece 121E abuts against the inner peripheral surface of the housing part 130 to position the housing part 130. In addition, although the example in which the back cover side contact piece 121E is formed in the entire circumferential direction of the back cover side holding portion 121D is shown, it is not limited to this, and it may be the same as the crystal side contact piece 111D, for example, It is formed in a structure etc. which are provided in four places along the circumferential direction of the back cover side holding part 121D, for example.

[0139] The back cover side holding surface 121F has a back cover side holding groove 121G as a groove portion that opens to the crystal 110 side along the circumferential direction of the back cover side holding portion 121D. In the rear cover side holding groove 121G, a rear cover side gasket member 124 as a cushioning member is attached, and the rear cover side gasket member 124 is formed of a synthetic resin member such as rubber and has elasticity. The back cover side gasket member 124 is formed, for example, in a substantially circular cross section like the crystal side gasket member 114, and its radial dimension is formed to be approximately the same as the groove width dimension of the back cover side holding groove 121G. As a result, the back cover side gasket member 124 is restricted by the groove wall of the back cover side holding groove 121G in the direction substantially orthogonal to the axial direction when a stress in the axial direction is applied, so the elastic force in the axial direction increases.

[0140] Furthermore, in a state where the back cover side contact piece 121E abuts against the inner peripheral surface of the housing portion 130 for positioning, the back cover side gasket member 124 is interposed between the back cover side holding surface 121F and the crystal 110 The watch lens side holding surface 111E sandwiches the case part 130, and thereby the case part 130 is fixed to the back cover side holding part 121D.

[0141] Again, such as Picture 10 As shown, on the back cover main body 121, at positions opposite to the back cover fixing portion 111G of the crystal 110, screw insertion holes 121H into which the above-mentioned fastening screws 150 can be inserted are respectively provided.

[0142] In these screw insertion holes 121H, as described above, the fastening screws 150 are inserted, and the fastening screws are screwed into the fixing screw holes 111H of the rear cover fixing portion 111G. Thereby, the back cover 120 and the crystal 110 are fixed in a state in which the housing part 130 is sandwiched.

[0143] The housing portion 130 has a substantially cylindrical metal portion 131; a first glass portion 132 arranged on the side of the crystal 110 of the metal portion 131; and a second glass portion 133 arranged on the side of the back cover 120 of the metal portion 131.

[0144]The metal part 131 is formed of a metal member such as titanium, and in a part of the metal part 131, a penetration hole 131A through which the crown 160 as an operation part is inserted is formed so as to penetrate the inside and outside. In addition, the metal portion 131 is provided with a first glass holding portion 131B on one end side opposed to the first glass portion 132, and a second glass holding portion 131F is provided on the other end side opposed to the second glass portion 133.

[0145] The first glass holding portion 131B has a first glass locking portion 131C as an engaging portion protruding toward the crystal 110 side, and a first glass holding surface 131D formed on the outer peripheral side of the first glass locking portion 131C.

[0146] The first glass locking portion 131C is provided at, for example, four locations in the circumferential direction of the metal portion 131, and positions the first glass portion 132 by contacting the inner peripheral surface of the first glass portion 132. In addition, although the configuration in which four first glass locking portions 131C are provided is shown, it is not limited to this. For example, three or more may be provided, or it may be formed continuously along the circumferential direction of the first glass holding portion 131B.

[0147] In addition, on the first glass holding surface 131D, a first glass holding groove 131E, which is a groove portion that opens toward the crystal 110 side, is formed in the circumferential direction. In the first glass holding groove 131E, a first glass holding gasket member 134 is attached, and the first glass holding gasket member 134 is formed of a synthetic resin member such as rubber and has elasticity. The first glass holding gasket member 134 is formed, for example, in a substantially circular cross section, and its radial dimension is formed to be approximately the same size as the groove width dimension of the first glass holding groove 131E. Thus, since the first glass holding washer member 134 is restricted by the groove wall of the first glass holding groove 131E in the direction substantially orthogonal to the axial direction when the stress in the axial direction is applied, the elastic force in the axial direction is increased. .

[0148] The second glass holding portion 131F has substantially the same structure as the first glass holding portion 131B, and has: a second glass locking portion 131G as an engaging portion protruding toward the rear cover 120; and a second glass locking portion The second glass holding surface 131H formed on the outer peripheral side of 131G.

[0149] The second glass locking portion 131G is provided at, for example, four locations in the circumferential direction of the metal portion 131, and positions the second glass portion 133 by contacting the inner peripheral surface of the second glass portion 133. Furthermore, the second glass locking portion 131G is the same as the first glass locking portion 131C, and is not limited to four. For example, it may be three, or it may be a configuration in which five or more are provided, or it may be held along the second glass. The portion 131F is formed continuously in the circumferential direction.

[0150] In addition, on the second glass holding surface 131H, a second glass holding groove 131I, which is a groove portion that opens to the rear cover 120 side, is formed in the circumferential direction. Like the first glass holding groove 131E, in the second glass holding groove 131I, a second glass holding gasket member 135 is installed, and the second glass holding gasket member 135 is formed of a synthetic resin member such as rubber and has elasticity. The second glass holding gasket member 135 is formed, for example, in a substantially circular cross section, and its radial dimension is formed to be approximately the same size as the groove width dimension of the second glass holding groove 131I.

[0151] The first glass portion 132 is formed of glass into a substantially cylindrical shape having substantially the same radial dimension as the metal portion 131 and is arranged on the same axis as the metal portion 131. Examples of the glass forming the first glass portion 132 include glass materials such as sapphire glass and crystal glass. In addition, as described above, the inner peripheral surface of the first glass portion 132 is positioned by the first glass locking portion 131C of the metal portion 131 and the crystal side contact piece 111D of the crystal 110. At this time, the first glass part 132 is sandwiched between the watch lens 110 and the metal part 131 via the watch lens side gasket member 114 and the first glass holding gasket member 134. Thereby, the stress from the crystal 110 and the metal part 131 is absorbed by these gasket members 114 and 134, a large stress is not applied to the 1st glass part 132, and damage etc. are prevented.

[0152] Like the first glass portion 132, the second glass portion 133 is formed of glass into a substantially cylindrical shape having substantially the same radial dimension as the metal portion 131, and is arranged on the same axis as the metal portion 131. Like the first glass portion 132, the second glass portion 133 is also formed of, for example, a glass material such as sapphire glass or crystal glass. In addition, as described above, the inner peripheral surface of the second glass portion 133 passes through the second glass locking portion 131G of the metal portion 131 and the back cover side contact piece 121E of the back cover 120 (refer to Picture 9 ) And be positioned. At this time, the second glass part 133 is sandwiched by the back cover 120 and the metal part 131 via the back cover side gasket member 124 and the second glass holding gasket part 135. Like the first glass part 132, it comes from the back cover 120 and the metal part. The stress of 131 is absorbed by these gasket members 124 and 135, and the damage of the second glass portion 133 and the like are prevented.

[0153] The shaft portion of the crown 160 as the operating portion is inserted through the insertion hole 131A provided in the metal portion 131 of the housing portion 130 as described above, and is connected to the movement 210. In addition, the crown 160 is operated by the user to output a predetermined operation signal to a control circuit unit (not shown) provided inside the movement 210. In addition, although the crown 160 is shown as an example of the operation part, it is not limited to this. For example, it may be an operation switch that can advance and retreat with respect to the movement 210.

[0154] In addition, between the crystal 110 and the movement 210, a dial 140 is arranged opposite to the crystal glass 112. The dial 140 is formed of a non-magnetic member such as synthetic resin, and is fixed to the upper surface side of the movement 210. In addition, a pointer insertion hole (not shown) is formed substantially in the center of the dial 140. In this pointer insertion hole, the shaft of the pointer 170 arranged on the dial 140 is inserted.

[0155] The movement 210 has a control circuit unit (not shown) inside, and the movement 210 drives, for example, a stepping motor (not shown) based on an operation signal input from the crown 160 to move the pointer 170. Furthermore, the movement 210 has, for example, a crystal vibrator, etc., and each pointer 170 is driven at a predetermined driving interval. In addition, in this embodiment, as the movement 210, although an example of an electronically controlled mechanical timepiece in which the hands 170 are driven by a motor based on an operation signal input from the crown 160 is shown, it is not limited to this, for example, , It can also be any drive type clocks, such as mechanical clocks, analog quartz clocks and so on. In addition, since the first and second glasses 132 and 133 are provided on the housing 130, the radio wave reception sensitivity becomes good. Therefore, it is preferably applied to a so-called radio controlled timepiece that receives a standard radio wave with time information to set the time.

[0156] (Assembly method of the outer shell of the clock)

[0157] Next, an example of an assembling method of the case 100 of the above-mentioned timepiece 1A will be described.

[0158] When assembling the above-mentioned timepiece 1A, the crystal glass 112 is installed on the edge 111 of the crystal 110 in advance to assemble the crystal 110, and the glass cover 122 is installed on the main body 121 of the back cover 120 to assemble the back cover 120 . Then, the watch lens side gasket member 114 is installed in the watch lens side holding groove 111F of the watch lens 110, and the back cover side gasket member 124 is installed in the back cover side holding groove 121G of the back cover 120. In addition, in the first glass holding groove 131E and the second glass holding groove 131I of the metal part 131 of the housing part 130, the first glass holding gasket member 134 and the second glass holding gasket member 135 are respectively mounted.

[0159] Next, the movement 210 is installed relative to the crystal 110, and the pointer 170 and the dial 140 are already installed on the movement 210.

[0160] Then, the first glass portion 132 is mounted on the mirror side holding surface 111E of the crystal 110. At this time, the crystal side contact piece 111D is brought into contact with the inner peripheral surface of the first glass portion 132 for positioning.

[0161] Next, the metal part 131 is mounted on the first glass part 132. At this time, the first glass locking portion 131C of the metal portion 131 is brought into contact with the inner peripheral surface of the first glass portion 132, and the metal portion 131 is positioned.

[0162] Then, the second glass part 133 is placed on the metal part 131. At this time, the inner peripheral surface of the second glass portion 133 is brought into contact with the second glass locking portion 131G of the metal portion 131, and the second glass portion 133 is positioned on the metal portion 131.

[0163] Next, the back cover 120 is closed from above the second glass portion 133. At this time, the back cover side contact piece 121E is brought into contact with the inner peripheral surface of the second glass portion 133, and positioning of the second glass portion 133 and the back cover 120 is performed.

[0164] After that, the fastening screw 150 is inserted through the screw insertion hole 121H of the back cover 120 and screwed into the fixing screw hole 111H provided on the back cover fixing portion 111G of the crystal 110.

[0165] By tightening the fastening screw 150, the housing part 130 is firmly clamped and fixed by the crystal 110 and the back cover 120. At this time, since the first glass portion 132 of the housing portion 130 is sandwiched between the crystal 110 and the metal portion 131 via the crystal side gasket member 114 and the first glass holding gasket member 134, these gasket members 114, 134 The elastic deformation of the first glass portion 132 is absorbed. Similarly, since the second glass portion 133 of the housing portion 130 is sandwiched between the back cover 120 and the metal portion 131 via the back cover side gasket member 124 and the second glass holding gasket member 135, these gasket members 124, 135 The elastic deformation of the second glass portion 133 is absorbed.

[0166] (The effect of the clock)

[0167] As described above, in the timepiece 1A of the above-mentioned embodiment, the case portion 130 has: a substantially ring-shaped metal portion 131; a first glass portion 132 arranged between the metal portion 131 and the crystal 110; and the metal portion The second glass portion 133 is arranged between 131 and the rear cover 120. Furthermore, an insertion hole 131A through which the shaft of the crown 160 can be inserted is formed in the metal part 131.

[0168] Therefore, since the first glass portion 132 and the second glass portion 133 are formed of glass, the internal structure of the timepiece can be visually confirmed from the side of the timepiece 1A. In addition, since the unique high-quality sense of glass can be obtained, the timepiece 1A can be Good craftsmanship. In addition, since the penetration hole 131A through which the crown 160 is inserted is provided on the metal part 131, the crown 160 can be provided on the housing part 130 without making the first glass part 132 and the second glass part 133 durable. Sexual decline.

[0169] In addition, between the crystal 110 and the first glass portion 132, between the first glass portion 132 and the metal portion 131, between the second glass portion 133 and the metal portion 131, and between the second glass portion 133 and the rear Between the covers 120, gasket parts 114, 134, 135, and 124 are respectively provided.

[0170] As a result, these gasket members 114, 124, 134, 135 can well absorb the stress applied to the first glass portion 132 from the crystal 110 and the metal portion 131, and the stress applied to the second glass portion from the back cover 120 and the metal portion 131. The stress on the portion 133 can prevent excessive stress from being applied to the first glass portion 132 and the second glass portion 133 made of glass, and can prevent the first glass portion 132 and the second glass portion 133 from being damaged.

[0171] Furthermore, the crystal side gasket member 114, the back cover side gasket member 124, the first glass holding gasket member 134, and the second glass holding gasket member 135 are respectively along the ring-shaped crystal side holding groove 111F and the back cover side holding groove 121G , The first glass holding groove 131E and the second glass holding groove 1311 are provided.

[0172] Therefore, the gasket members 114, 124, 134, and 135 can be well disposed between the crystal 110 and the first glass portion 132, and the first glass portion 132 and the metal portion without shifting in the radial direction, for example. 131, between the metal part 131 and the second glass part 133, and between the second glass part 133 and the back cover 120. Therefore, it is possible to prevent a decrease in strength due to the displacement of the gasket members 114, 124, 134, 135, and also to improve the appearance.

[0173] In addition, in the timepiece 1A of the above-described embodiment, the gasket members 114 and 124 are used as cushioning members. Therefore, the water resistance of the timepiece 1A can be improved.

[0174] Furthermore, the metal part 131 has a first glass locking part 131C that positions the first glass part 132 and a second glass locking part 131G that positions the second glass part 133. Therefore, defects such as lateral displacement of the first glass portion 132, the metal portion 131, and the second glass portion 133 in the radial direction can be prevented, a good design can be maintained, and a good strength can also be maintained.

[0175] Furthermore, the screw 150 is inserted through the screw insertion hole 121H provided in the metal back cover 120, and the screw 150 is screwed to the back cover fixing portion 111G extending from the metal edge portion 111 of the crystal 110. In the threaded hole 111H, the housing part 130 is clamped to assemble the housing 100.

[0176] Therefore, by fastening the metal parts of the back cover 120 and the crystal 110 with screws, the strength of the timepiece 1A can be improved. At this time, as described above, the first glass portion 132 and the second glass portion 133 are sandwiched by the watch lens 110, the back cover 120, and the metal portion 131 via the gasket members 114, 124, 134, and 135. A large stress is applied in the axial direction by tightening, and the stress may be dispersed by the gasket members 114, 124, 134, and 135.

[0177] Furthermore, these gasket members 114, 124, 134, and 135 are formed to have a substantially circular cross-section, and the radial dimension is formed to be the same as those of the lens side holding groove 111F, the back cover side holding groove 121G, the first glass holding groove 131E, and the The groove widths of the two glass holding grooves 131I are approximately the same size. Therefore, when these gasket members 114, 124, 134, 135 are installed in the lens side holding groove 111F, the back cover side holding groove 121G, the first glass holding groove 131E, and the second glass holding groove 131I, the table lens 110 and When the rear cover 120 clamps the housing portion 130, the elastic deformation of the gasket members 114, 124, 134, 135 in the radial direction is affected by the lens side holding groove 111F, the rear cover side holding groove 121G, the first glass holding groove 131E, and the second glass holding groove 131E. The two glass holding grooves 131I are restricted by the groove walls, which can increase the elastic force in the axial direction. Therefore, the application of stress to the first glass portion 132 and the second glass portion 133 can be prevented more satisfactorily, and breakage can be prevented more reliably.

[0178] (Other embodiments)