Case and clock

Abstract

The present invention provides a case and a timepiece. The case comprises: a first case having a locking portion on its outer periphery; an outer casing covering the outer periphery of the first case and having a locking portion for the locking portion to be locked; a second case disposed on the upper part of the first case and the outer casing; and a connecting member connecting the second case to the outer casing and installing the second case to the first case.

Description

[0001] This invention patent application is a divisional application of the invention patent application with application date of March 9, 2021, application number 202110257251.8, and invention name “Casing and Watch”. Technical Field

[0002] The present invention relates to a housing for electronic equipment such as a wristwatch and a portable communication device, and a timepiece having the housing. Background Art

[0003] As described in Japanese Patent Application Laid-Open No. 2000-329869, there is known a wristwatch case having a first case for accommodating a timepiece module, a second case attached to the first case and having a watch glass attached thereto, and an exterior member attached to the outer periphery of the first case. Summary of the invention

[0004] One of the methods is a shell, which includes: a first shell, which has a locking portion on its outer periphery; an outer component, which covers the outer periphery of the above-mentioned first shell and has a locking portion for the above-mentioned locking portion to be engaged; a second shell, which is arranged on the upper part of the above-mentioned first shell and the above-mentioned outer component; and a connecting component, which installs the above-mentioned second shell to the above-mentioned first shell by connecting the above-mentioned second shell to the above-mentioned outer component. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] Figure 1 This is an enlarged perspective view showing an embodiment applied to a wristwatch.

[0006] Figure 2 Yes Figure 1 An enlarged stereoscopic view of an exploded representation of the watch case shown.

[0007] Figure 3 is Figure 1 The watch shown is an enlarged stereoscopic image cut away from the direction AA.

[0008] Figure 4 Yes means Figure 3 An enlarged cross-sectional view of the essential parts of the watch case is shown. DETAILED DESCRIPTION

[0009] Below, refer to Figure 1 to Figure 4 An embodiment applied to a wristwatch will be described.

[0010] like Figure 1 As shown, the watch comprises a watch case 1. Band mounting portions 2 for mounting a watch band (not shown) are provided at the 12 o'clock side and the 6 o'clock side of the watch case 1. In addition, switch devices 3 are provided at the 2 o'clock side, the 3 o'clock side, the 4 o'clock side, the 8 o'clock side and the 10 o'clock side of the watch case 1, respectively.

[0011] like Figure 1 to Figure 4 As shown, the watch case 1 includes: a first case 4; a second case 5, which is mounted on the upper part of the first case 4; and an outer case 6 as an outer member, which covers and is arranged on the outer periphery of the first case 4 and is mounted on the second case 5. The first case 4 accommodates a watch module (not shown) inside, and includes a cylindrical outer peripheral portion 4a and a bottom 4b, which are integrally formed of a hard synthetic resin.

[0012] That is, Figure 2 to Figure 4 As shown, the first housing 4 is formed of a hard synthetic resin, for example, a hard synthetic resin with high rigidity obtained by mixing glass fiber or carbon fiber into polyamide resin. A locking protrusion 7 is provided on the outer peripheral surface of the outer peripheral portion 4a of the first housing 4. The locking protrusion 7 is provided protruding from the outer peripheral surface of the upper side of the outer peripheral portion 4a.

[0013] In this case, if Figure 2 to Figure 4 As shown, the locking protrusion 7 is preferably provided over the entire periphery of the outer peripheral surface of the outer peripheral portion 4a, but may also be provided locally. In addition, the locking protrusion 7 is formed with a length protruding from the outer peripheral surface of the outer peripheral portion 4a that is sufficiently thinner than the wall thickness of the first housing 4, for example, about 1 / 3 of the wall thickness of the lower side of the outer peripheral portion 4a.

[0014] In addition, if Figure 2 to Figure 4 As shown in the figure, a gasket groove 4c for mounting the housing gasket 8 is continuously provided over the entire circumference on the upper end surface of the first housing 4. The housing gasket 8 has a circular cross-sectional shape and is formed into an annular shape as a whole. The depth of the gasket groove 4c is formed to be the same as the radius in the cross-sectional shape of the housing gasket 8. Therefore, the housing gasket 8 is configured so that when it is mounted in the gasket groove 4c, about half of the upper side protrudes upward from the upper end surface of the first housing 4.

[0015] like Figures 1 to 4 As shown, the outer casing 6 is formed into a substantially annular shape by a metal such as stainless steel. An engaging recess 10 for engaging the locking protrusion 7 of the first casing 4 is provided on the inner circumferential surface of the outer casing 6. The engaging recess 10 is provided from the upper side of the inner circumferential surface of the outer casing 6, that is, from the middle part of the inner circumferential surface to the upper end surface.

[0016] Therefore, if Figure 2 to Figure 4 As shown, the outer shell 6 is constructed so that when it is installed on the outer periphery of the first shell 4 from the lower side and the locking protrusion 7 of the first shell 4 is engaged with the locking recess 10, the lower end 7a of the locking protrusion 7 abuts against the lower end 10a of the locking recess 10, and the first shell 4 will not slip out to the lower side of the outer shell 6.

[0017] In addition, if Figure 1 to Figure 4As shown in FIG. 1 , the band attachment parts 2 of the watch case 1 are respectively provided protrudingly at the 12 o'clock side and the 6 o'clock side of the outer case 6. The band attachment part 2 at the 6 o'clock side of these band attachment parts 2 includes: a connecting protrusion 2a protruding obliquely downward from the outer circumference corresponding to the 6 o'clock; and a substantially triangular mounting protrusion 2b corresponding to the 5 o'clock and 7 o'clock. In this case, the connecting protrusion 2a protrudes more than the mounting protrusions 2b located on both sides thereof.

[0018] In addition, if Figure 1 to Figure 4 As shown, the band attachment part 2 on the 12 o'clock side is the same as the band attachment part 2 on the 6 o'clock side, and includes a connecting protrusion 2a protruding obliquely downward from the outer peripheral surface corresponding to 12 o'clock, and a substantially triangular mounting protrusion 2b corresponding to 1 o'clock and 11 o'clock. On the upper end surface of each mounting protrusion 2b of these band attachment parts 2, except for the edge of the outer periphery, a substantially circular seat surface 2c is respectively provided in a recessed manner. The seat surface 2c is formed so that the seat surface as the bottom surface is slightly lower than the upper end surface of the first housing 4.

[0019] That is, the seat surface portion 2c of each mounting protrusion 2b in the band mounting portion 2 is respectively as follows: Figure 4 As shown, the outer shell 6 is installed on the outer periphery of the first shell 4, and the locking protrusion 7 of the first shell 4 is locked with the locking recess 10 of the outer shell 6. When the lower end 7a of the locking protrusion 7 is in abutment with the lower end 10a of the locking recess 10, the seat surface of the seat portion 2c is formed to be slightly lower than the upper end surface of the first shell 4.

[0020] On the other hand, Figures 1 to 4 As shown, the second housing 5 is arranged and mounted on the upper end of the first housing 4 and the outer housing 6, and is formed into a roughly annular shape by a metal such as stainless steel. In the inner periphery of the second housing 5, a watch glass 12 is embedded on the upper side via a glass gasket 12a, and an annular parting member 13 is embedded in the inner periphery located below the watch glass 12.

[0021] In addition, if Figure 3 and Figure 4 As shown, a position limiting portion 14 is provided protruding downward on the lower end surface of the second housing 5. The position limiting portion 14 is configured to abut against and fit into the inner peripheral surface of the first housing 4 when the lower end surface of the second housing 5 is arranged on the upper end surface of the first housing 4, thereby limiting the second housing 5 to the upper end of the first housing 4.

[0022] At the 12 o'clock side and the 6 o'clock side of the second housing 5, as shown in FIG. Figure 1 to Figure 4As shown in the figure, the fixing parts 15 arranged in the substantially circular seat surface part 2c provided in each mounting protrusion part 2b of the band mounting part 2 provided in the outer casing 6 are respectively provided to protrude from the outer peripheral surface. The fixing parts 15 on the 6 o'clock side of these fixing parts 15 are formed into substantially circular shapes corresponding to the 5 o'clock and the 7 o'clock. Similarly, the fixing parts 15 on the 12 o'clock side are formed into substantially circular shapes corresponding to the 1 o'clock and the 11 o'clock.

[0023] In this case, if Figures 2 to 4 As shown, the fixing portion 15 of the second housing 5 is formed into a substantially circular shape of the same size as the seat surface portion 2c provided at the upper end of the mounting protrusion 2b of the outer housing 6, and the thickness in the vertical direction is formed with a wall thickness of the same degree as the depth of the seat surface portion 2c. Thus, the fixing portion 15 is configured to be arranged in the seat surface portion 2c of the mounting protrusion 2b when the second housing 5 is arranged on the outer housing 6.

[0024] In addition, if Figures 1 to 4 As shown in the figure, a substantially semicircular cutout portion 15a is provided on the upper side of the fixing portion 15 on the outer side surface of the second housing 5 corresponding to the fixing portion 15. That is, the cutout portion 15a is formed by cutting out the upper side of the fixing portion 15 of the second housing 5 corresponding to the seat surface portion 2c provided at the upper end portion of the mounting protrusion 2b of the band mounting portion 2 of the outer housing 6 into a substantially semicircular groove shape.

[0025] In addition, if Figure 1 to Figure 4 As shown, the second housing 5 is mounted on the outer housing 6 by a screw member 16 as a connecting member. That is, the screw member 16 includes a head 16a, a neck 16b, and a threaded portion 16c. In this case, the outer diameter of the head 16a is formed to be substantially the same as the outer diameter of the fixing portion 15 of the second housing 5. In addition, a screw insertion hole 17 is provided in the fixing portion 15 so as to penetrate from top to bottom, into which the neck 16b of the screw member 16 is inserted.

[0026] In addition, if Figures 2 to 4 As shown, on the seat surface portion 2c at the upper end of the mounting protrusion 2b of the band mounting portion 2 provided on the outer case 6, a screw mounting hole 18 is provided on the same axis as the screw insertion hole 17 of the fixing portion 15 of the second case 5. The screw mounting hole 18 includes a neck insertion hole portion 18a for inserting the neck portion 16b of the screw member 16 and a threaded hole portion 18b for threading the threaded portion 16c of the screw member 16, which are provided on the same axis.

[0027] Therefore, if Figure 4As shown, the second shell 5 and the outer shell 6 are constructed as follows: the second shell 5 is arranged at the upper ends of the first shell 4 and the outer shell 6, and when the fixing portion 15 of the second shell 5 is arranged on the seat surface 2c of the mounting protrusion 2b of the outer shell 6, the screw insertion hole 17 provided on the fixing portion 15 of the second shell 5 corresponds to the screw mounting hole 18 provided on the seat surface 2c of the mounting protrusion 2b on the same axis.

[0028] Therefore, if Figure 4 As shown, the screw component 16 is constructed as follows: the second shell 5 is arranged at the upper end of the first shell 4 and the outer shell 6, and the screw insertion hole 17 of the fixing portion 15 of the second shell 5 and the screw mounting hole 18 of the seat surface portion 2c provided at the upper end of the mounting protrusion portion 2b of the outer shell 6 are in a state corresponding to each other on the same axis, the threaded portion 16c is inserted into the screw insertion hole 17 from above, and the inserted threaded portion 16c is inserted into the screw mounting hole 18 and screwed with the threaded hole portion 18b.

[0029] In this case, if Figure 4 As shown, the screw component 16 is constructed such that when the threaded portion 16c is inserted from above into the screw insertion hole 17 of the fixing portion 15 of the second shell 5, the inserted threaded portion 16c is inserted into the screw mounting hole 18 of the seat surface portion 2c of the mounting protrusion portion 2b of the outer shell 6 and is threadedly engaged with the threaded hole portion 18b, the neck portion 16b is inserted into the screw insertion hole 17 and the neck insertion hole portion 18a of the screw mounting hole 18, and the connection is made in a state in which the head portion 16a covers the fixing portion 15 of the second shell 5 and a part of the head portion 16a, namely a roughly semicircular portion, is arranged in the cutout portion 15a on the upper side of the fixing portion 15.

[0030] Therefore, if Figure 4 As shown, the screw component 16 is constructed as follows: the head 16a covers and abuts against the fixing portion 15 of the second shell 5, and the threaded portion 16c is screwed into the threaded hole portion 18b of the screw mounting hole 18 provided on the seat portion 2c of the outer shell 6, while pulling the outer shell 6 toward the second shell 5, and the lower end portion 10a of the engaging recess 10 of the outer shell 6 lifts the lower end portion 7a of the locking protrusion 7 of the first shell 4, pressing the upper end surface of the first shell 4 against the lower end surface of the second shell 5, thereby installing the second shell 5 on the first shell 4 via the outer shell 6.

[0031] In this case, if Figure 4 As shown, the screw member 16 of the watch case 1, the second case 5, the first case 4, and the outer case 6 are located Figure 4 That is, the watch case 1 is constructed such that the head 16a of the screw member 16, the fixing portion 15 of the second case 5, the locking protrusion 7 of the first case 4, and the lower end 10a of the locking recess 10 of the outer case 6 are overlapped in this order. Figure 4The two dotted lines overlap on the straight line shown in FIG.

[0032] In this case, if Figure 4 As shown, the first shell 4 and the second shell 5 are constructed so that when they are installed by means of the screw component 16, the lower end surface of the second shell 5 presses the shell gasket 8 arranged in the gasket groove 4c of the first shell 4 and is compressed and deformed into the gasket groove 4c, and the shell gasket 8 after the compression and deformation is utilized to achieve waterproofing between the upper end surface of the first shell 4 and the lower end surface of the second shell 5.

[0033] In addition, if Figure 4 As shown, the second shell 5 and the outer shell 6 are installed by means of a screw component 16. When the upper end surface of the first shell 4 and the lower end surface of the second shell 5 compress and deform the shell gasket 8 to contact or approach each other, the fixing portion 15 of the second shell 5 is arranged on the seat surface portion 2c provided at the upper end portion of the mounting protrusion 2b of the outer shell 6. In this state, a gap S is provided between the lower end surface of the fixing portion 15 of the second shell 5 and the seat surface of the seat surface portion 2c.

[0034] Next, the operation of such a wristwatch case 1 will be described.

[0035] When assembling the watch case 1, first, the outer case 6 is mounted on the outer periphery of the first case 4. At this time, the outer case 6 is inserted into the first case 4 from the bottom, and the locking protrusion 7 provided on the outer periphery 4a of the first case 4 is engaged with the locking recess 10 provided on the inner periphery of the outer case 6.

[0036] Then, the lower end 10a of the engaging recess 10 of the outer case 6 abuts against the lower end 7a of the locking protrusion 7 of the first case 4 and is held. As a result, the outer case 6 is attached to the outer peripheral portion 4a of the first case 4 without being dislodged upward. In this state, the case gasket 8 is arranged in the gasket groove 4c provided on the upper end surface of the first case 4 so as to protrude upward. In this state, the second case 5 is arranged at the upper ends of the first case 4 and the outer case 6.

[0037] At this time, the mold release member 13 is previously embedded in the second case 5 from above, and the watch glass 12 and the glass gasket 12a are embedded in the second case 5 in a manner that they are located on the upper side of the mold release member 13. In this state, if the second case 5 is arranged at the upper end of the first case 4 and the outer case 6, the position restriction portion 14 of the second case 5 abuts against the inner peripheral surface of the first case 4 and is embedded in the first case 4. As a result, the second case 5 is arranged on the upper end surface of the first case 4 with position restriction.

[0038] In addition, at this time, the fixing portion 15 of the second housing 5 is arranged on the mounting protrusion 2b of the band mounting portion 2 of the outer housing 6, so that the fixing portion 15 on the lower side of the cutout portion 15a of the second housing 5 is arranged corresponding to the seat surface 2c of the upper end surface of the mounting protrusion 2b. Therefore, the screw insertion hole 17 provided in the fixing portion 15 of the second housing 5 and the screw mounting hole 18 provided in the seat surface 2c of the mounting protrusion 2b of the outer housing 6 correspond to each other on the same axis.

[0039] In this state, the second housing 5 is mounted on the upper ends of the first housing 4 and the outer housing 6 by means of the screw member 16. At this time, the threaded portion 16c of the screw member 16 is inserted from above into the screw insertion hole 17, the inserted threaded portion 16c is inserted into the screw mounting hole 18, and the neck portion 16b of the screw member 16 is inserted into the screw insertion hole 17 and the neck insertion hole portion 18a of the screw mounting hole 18, the head portion 16a is arranged to cover the fixing portion 15 of the second housing 5, and a part of the head portion 16a, i.e., a semicircular portion, is arranged in the cutout portion 15a.

[0040] In this state, if the screw member 16 is connected by threading the threaded portion 16c of the screw member 16 with the threaded hole portion 18b of the screw mounting hole 18, the head 16a of the screw member 16 covers and abuts against the upper surface of the fixing portion 15 of the second housing 5, and the threaded portion 16c is screwed into the threaded hole portion 18b of the screw mounting hole 18, while the outer housing 6 is pulled closer to the second housing 5. As a result, the lower end portion 10a of the engaging recess 10 of the outer housing 6 lifts the lower end portion 7a of the locking protrusion 7 of the first housing 4.

[0041] In this case, the screw member 16, the second housing 5, the first housing 4, and the outer housing 6 are located Figure 4 That is, the head 16a of the screw member 16, the fixing portion 15 of the second housing 5, the locking protrusion 7 of the first housing 4, and the lower end 10a of the locking recess 10 of the outer housing 6 are overlapped in sequence. Figure 4 The two dotted lines overlap on the straight line shown in FIG.

[0042] Therefore, since the head 16a of the screw member 16 is located above the locking protrusion 7 of the first case 4, the second case 5 and the first case 4 are reliably and firmly pressed. Thus, the second case 5, the first case 4, and the outer case 6 can be firmly installed, and the miniaturization of the watch case 1 can be achieved.

[0043] At this time, the lower end surface of the second housing 5 presses the housing gasket 8 installed in the gasket groove 4c of the upper end surface of the first housing 4 to compress and deform it, and the lower end surface of the second housing 5 is close to or in contact with the upper end surface of the first housing 4 and pressed. As a result, waterproofing between the upper end surface of the first housing 4 and the lower end surface of the second housing 5 is achieved by the sealing ring 8, ensuring airtightness. In addition, at this time, the second housing 5 is installed on the first housing 4 via the outer housing 6.

[0044] In addition, in this case, when the upper end surface of the first shell 4 and the lower end surface of the second shell 5 are in contact or close to each other by compressing and deforming the shell gasket 8, the fixing portion 15 of the second shell 5 is arranged on the seat surface portion 2c of the strap mounting portion 2 of the outer shell 6 which is provided on the upper part of the mounting protrusion 2b. In this state, a gap S is provided between the lower end surface of the fixing portion 15 of the second shell 5 and the seat surface of the seat surface portion 2c.

[0045] Therefore, when the second housing 5 and the outer housing 6 are mounted by connecting the screw member 16, the screw member 16 can be reliably connected through the gap S between the lower surface of the fixing portion 15 of the second housing 5 and the seat surface of the seat surface portion 2c. As a result, the outer housing 6 is reliably pulled close to the second housing 5, and the first housing 4 is strongly pressed against the second housing 5.

[0046] In this case, the second case 5 and the outer case 6 are installed with screw parts 16 on the diagonals of the strap mounting part 2 of the watch case 1, that is, on the diagonals of the fixing part 15 of the second case 5 on the 1 o'clock side and the fixing part 15 of the second case 5 on the 7 o'clock side, and on the diagonals of the fixing part 15 of the second case 5 on the 11 o'clock side and the fixing part 15 of the second case 5 on the 5 o'clock side, thereby reliably pressing the second case 5 to the first case 4 via the outer case 6.

[0047] As a result, the shell gasket 8 is firmly clamped between the upper end surface of the first shell 4 and the lower end surface of the second shell 5 and compressed and deformed, so that waterproofing between the upper end surface of the first shell 4 and the lower end surface of the second shell 5 can be reliably achieved, and the first shell 4 is firmly installed on the second shell 5 via the outer shell 6.

[0048] In addition, in the watch case 1, since the first case 4 is not provided with the screw mounting hole 18 for mounting the screw member 16, the wall thickness of the first case 4 is formed thin, thereby realizing the overall miniaturization of the watch case 1. In this case, by mounting the screw member 16 on the mounting protrusion 2b of the band mounting portion 2 of the outer case 6, even if the outer case 6 is mounted on the outer peripheral portion 4a of the first case 4, the outer shape of the outer case 6 can be suppressed to be small, thereby realizing the overall miniaturization of the watch case 1.

[0049] Furthermore, the first case 4 of the watch case 1 is formed of a hard synthetic resin, the outer peripheral portion 4a of the first case 4 is covered by an outer case 6 made of metal such as stainless steel, and the upper side of the first case 4 is covered by a second case 5 made of metal such as stainless steel, so that the first case 4 is reliably and well protected by the outer case 6 and the second case 5. Therefore, even if the watch case 1 is impacted from the outside, the first case 4 will not be damaged or broken by the impact.

[0050] In this way, according to the watch case 1, by comprising a first case 4 having a locking protrusion 7 on the outer periphery, an outer casing 6 which is an outer casing component covering the outer periphery of the first case 4 and having a locking recess 10 which is locked to the locking protrusion 7, a second case 5 which is arranged on the upper part of the first case 4 and the outer casing 6, and a connecting component which connects the second case 5 to the outer casing 6 and installs the second case 5 to the first case 4, namely a screw component 16, the number of components can be reduced and the overall miniaturization of the watch case 1 can be achieved.

[0051] That is, in the watch case 1, the locking protrusion 7 of the first case 4 is engaged with the locking recess 10 of the outer case 6. When the second case 5 is installed on the outer case 6 using the screw component 16, the locking recess 10 of the outer case 6 pulls the locking protrusion 7 of the first case 4 toward the second case 5 through the connection of the screw component 16, so that the first case 4 can be reliably and well installed on the second case 5 using the outer case 6.

[0052] Therefore, in the watch case 1, the second case 5 is mounted on the outer case 6 only by the screw member 16, so the number of components of the screw member 16 can be reduced, thereby simplifying the assembly work. In addition, since the screw member 16 is not mounted on the first case 4, the wall thickness of the first case 4 can be formed thinner, thereby miniaturizing the watch case 1 as a whole.

[0053] In this case, in the watch case 1, the locking protrusion 7 is arranged to protrude outward from the outer circumferential surface of the first case 4, and the locking recess 10 is recessed in the inner circumferential surface of the outer case 6. The locking protrusion 7 is inserted into the locking recess 10 from the top of the outer case 6 and locked, thereby enabling the lower end 7a of the locking protrusion 7 to abut against the lower end 10a of the locking recess 10, thereby enabling the first case 4 to be maintained so as not to slip out to the lower side of the outer case 6.

[0054] That is, in the watch case 1, the locking protrusion 7 of the first case 4 is engaged with the locking recess 10 of the outer case 6. When the second case 5 is installed on the outer case 6 using the screw component 16, the lower end 10a of the locking recess 10 of the outer case 6 can reliably pull the lower end 7a of the locking protrusion 7 of the first case 4 close to the second case 5 through the connection of the screw component 16, so that the first case 4 can be reliably and well installed on the second case 5 through the outer case 6.

[0055] In addition, in the watch body case 1, a case gasket 8 is arranged between the opposing surfaces of the first case 4 and the second case 5. When the second case 5 is installed on the outer case 6 using the screw component 16, the case gasket 8 can be clamped between the first case 4 and the second case 5. The clamped case gasket 8 can reliably and well achieve waterproofing between the first case 4 and the second case 5.

[0056] That is, in the watch case 1, a case gasket 8 is arranged to protrude upward in a gasket groove 4c provided on the upper end surface of the first case 4, so that when the second case 5 is installed on the outer case 6 by connecting with the screw member 16, the case gasket 8 can be strongly clamped between the first case 4 and the second case 5 to be compressed and deformed, thereby reliably achieving waterproofness between the first case 4 and the second case 5.

[0057] In addition, in the watch case 1, a gap S is provided between the opposing surfaces of the second case 4 and the outer case 6, that is, between the lower surface of the second case 4 and the upper surface of the outer case 6. Therefore, when the second case 5 is installed on the outer case 6 using the screw component 16, the screw component 16 can be fully connected, thereby enabling the upper surface of the first case 4 to be reliably pressed against the lower surface of the second case 5.

[0058] That is, in the watch case 1, when the second case 5 and the outer case 6 are installed by connection with the screw component 16, the screw component 16 can be reliably connected through the gap S between the lower surface of the fixing portion 15 of the second case 5 and the seat surface 2c of the upper end of the mounting protrusion 2b of the strap mounting portion 2 of the outer case 6, so that the outer case 6 can be reliably pulled close to the second case 5 and the first case 4 can be reliably pressed against the second case 5.

[0059] In addition, in the watch case 1, a strap mounting portion 2 is protrudingly provided on the outer periphery of the outer case 6, and a fixing portion 15 arranged on the strap mounting portion 2 is provided on the second case 5. The strap mounting portion 2 of the outer case 6 and the fixing portion 15 of the second case 5 are mounted by a screw component 16, thereby reliably and effectively realizing the miniaturization of the entire watch case 1.

[0060] That is, in the watch case 1, by installing the screw member 16 on the mounting protrusion 2b of the band mounting portion 2 of the outer case 6, the outer shape of the outer case 6 mounted on the outer peripheral portion 4a of the first case 4 can be suppressed to be small, thereby also achieving the miniaturization of the entire watch case 1. In this case, since the outer diameter of the head 16a of the screw member 16 is substantially the same as the outer diameter of the fixing portion 15 of the second case 5, the fixing portion 15 can be covered by the head 16a in a manner that is not visible from the outside.

[0061] In this case, in the watch case 1, by installing the screw member 16 at the position of the fixing portion 15 on the diagonal line of the second case 5, the screw member 16 can be reliably connected and installed to the outer case 6 on the diagonal line of the second case 5. As a result, the first case 4 can be reliably pressed and installed on the second case 5, and the case gasket 8 can be reliably clamped between the first case 4 and the second case 5.

[0062] That is, in the watch case 1, on the diagonal of the strap mounting portion 2 of the watch case 1, that is, on the diagonal of the fixing portion 15 of the second case 5 on the 1 o'clock side and the fixing portion 15 of the second case 5 on the 7 o'clock side, and on the diagonal of the fixing portion 15 of the second case 5 on the 11 o'clock side and the fixing portion 15 of the second case 5 on the 5 o'clock side, the screw component 16 can connect the second case 5 and the outer case 6, so that the first case 4 can be efficiently and reliably mounted on the second case 5 via the outer case 6.

[0063] Therefore, in the watch case 1, the threaded connection parts based on the screw parts 16 can be suppressed to a minimum, so that the first case 4 can be firmly mounted on the second case 5 via the outer case 6 with fewer screw parts 16, and the case gasket 8 can be reliably clamped between the upper end surface of the first case 4 and the lower end surface of the second case 5, thereby reliably achieving waterproofness between the first case 4 and the second case 5.

[0064] In addition, in the watch case 1, a cutout portion 15a in which the head 16a of the screw member 16 is arranged on the outer side surface of the second case 5 is provided corresponding to the fixing portion 15. When the first case 4 and the second case 5 are installed by the screw member 16, the head 16a of the screw member 16 can be used to cover the fixing portion 15 of the second case 5, and a part of the head 16a can be arranged in the cutout portion 15a. Therefore, a structure in which not only the head 16a does not become an obstacle but also a design preference is provided.

[0065] In addition, in the wristwatch case 1, the screw member 16, the second case 5, the first case 4, and the outer case 6 are located Figure 4In the embodiment of the present invention, the second housing 5, the first housing 4, and the outer housing 6 overlap on the straight line indicated by the double-dashed line in the figure, and overlap when viewed from above, thereby making it possible to firmly attach the second housing 5, the first housing 4, and the outer housing 6. That is, in the watch case 1, since the head 16a of the screw member 16, the fixing portion 15 of the second housing 5, the locking protrusion 7 of the first housing 4, and the lower end 10a of the locking recess 10 of the outer housing 6 overlap on the straight line in this order, the head 16a of the screw member 16 can be located on the upper side of the locking protrusion 7 of the first housing 4.

[0066] Thus, in the watch case 1, the second case 5 and the first case 4 can be reliably and firmly pressed by the head 16a of the screw member 16, so that the second case 5, the first case 4, and the outer case 6 can be firmly installed and the watch case 1 can be miniaturized.

[0067] Furthermore, in the watch case 1, the first case 4 is formed of synthetic resin, and the outer case 6 and the second case 5 are formed of metal, so that the first case 4 made of synthetic resin can be reliably and well protected by the metal outer case 6 and the second case 5. Therefore, even if the watch case 1 is impacted from the outside, the first case 4 will not be damaged or broken by the impact.

[0068] In addition, in the above-mentioned embodiment, the locking protrusion 7 of the first shell 4 is protruding outward from the outer peripheral surface of the outer peripheral portion 4a of the first shell 4, the locking recess 10 of the outer shell 6 is recessed in the inner peripheral surface of the outer shell 6, and the locking protrusion 7 is inserted into the locking recess 10 from the top of the outer shell 6 and locked. However, the present invention is not limited to this. For example, the locking recess may be provided on the outer surface of the outer peripheral portion 4a of the first shell 4, and the locking protrusion may be provided on the inner peripheral surface of the outer shell 6.

[0069] In this case, it is sufficient to provide a locking recess from the middle part to the lower end of the outer surface of the outer peripheral portion 4a of the first shell 4, and to provide a locking protrusion at the lower part of the inner peripheral surface of the outer shell 6. When the outer shell 6 is installed on the outer peripheral portion 4a of the first shell 4, the locking protrusion of the outer shell 6 is inserted into the locking recess from the lower side of the first shell 4, so that the upper end of the locking protrusion abuts against the upper end of the locking recess and locks.

[0070] In addition, in the above-mentioned embodiment, a case is described in which a gasket groove 4c is provided on the upper end surface of the first shell 4 and a shell gasket 8 is installed on the gasket groove 4c, but the present invention is not limited to this. For example, a gasket groove may be provided on the lower end surface of the second shell 5 and a shell gasket 8 may be installed on the gasket groove.

[0071] In addition, in the above-mentioned embodiment, the case where the screw member 16 includes the head 16a, the neck 16b and the threaded portion 16c is described, but the present invention is not limited to this, and the screw member 16 may also be configured to include only the head and the threaded portion. In this case, the screw mounting hole 18 of the outer casing 6 may also be formed by only the threaded hole portion 18b.

[0072] In the above-mentioned embodiment, the case where the screw member 16 is used as the connecting member is described. However, the present invention does not necessarily require the screw member 16, and any member may be used as long as it can connect the second housing 5 to the outer housing 6 by pressing the second housing 5 to the outer housing 6.

[0073] Furthermore, in the above-described embodiment, since the first case 4 is formed thin, the outer case 6 can also be thickened, thereby improving the impact resistance of the wristwatch case 1 against external impacts.

[0074] Furthermore, in the above-mentioned embodiments, the case of being applied to a watch is described, but the present invention does not necessarily need to be a watch, and can be applied to various clocks such as travel watches, alarm clocks, table clocks, wall clocks, etc. In addition, the present invention does not necessarily need to be a clock, and can be applied to electronic devices such as portable terminals and portable communication devices, for example.

[0075] As mentioned above, although one embodiment of the present invention has been described, the present invention is not limited thereto, and includes the inventions described in the claims and their equivalents.

Claims

1. A watch case, characterized in that: have: A first housing having a locking portion disposed on the outer periphery; A second housing mounted on the upper portion of the first housing; An exterior member covering the outer periphery of the first housing and having an engaging portion engaged by the engaging portion; and a connecting member installed by connecting the second housing to the exterior member, The locking portion is configured to protrude outward from the outer peripheral surface of the first housing. The engaging portion is provided in a recessed manner on the inner peripheral surface of the exterior member, and the locking portion is inserted into the engaging portion from above the exterior member to engage therewith.

2. The watch case according to claim 1, characterized in that: At least a portion of the upper surface of the first housing is substantially flush with at least a portion of the upper surface of the exterior member.

3. The watch case according to claim 1, characterized in that: The connecting member has a head and a threaded portion; The threaded portion is inserted into the exterior member.

4. The watch case according to any one of claims 1 to 3, characterized in that: A gap is provided between opposing surfaces of the second housing and the exterior member.

5. The watch case according to any one of claims 1 to 3, characterized in that: A strap mounting portion is protrudingly provided on the outer periphery of the exterior component, a fixing portion configured on the strap mounting portion is provided on the second housing, and the fixing portion of the second housing and the strap mounting portion of the exterior component are mounted via the connecting member.

6. The watch case according to claim 4, characterized in that: The connecting member is a screw member. A notch portion in which a head of the screw member is disposed is provided on an outer side surface of the second housing corresponding to the fixing portion.

7. The watch case according to claim 6, characterized in that: The head portion of the connecting member, the fixing portion of the second housing, the locking portion of the first housing, and the lower end portion of the engaging portion of the exterior member are located on a straight line and overlap each other in a plan view.

8. The watch case according to claim 7, characterized in that: The first housing is formed of synthetic resin. The second housing is formed of metal. The exterior member is formed of metal.

9. The watch case according to claim 1, characterized in that: The exterior member includes a plurality of the engagement portions.

10. The watch case according to claim 1, characterized in that: The uppermost surface of the first housing is located below the uppermost surface of the exterior member, and the lowermost surface of the first housing is located below the lowermost surface of the exterior member.

11. The watch case according to claim 1, characterized in that: The uppermost surface of the second housing is located above the uppermost surface of the exterior member, and the lowermost surface of the second housing is located above the lowermost surface of the exterior member.

12. A timepiece, characterized in that: A wristwatch case according to any one of claims 1 to 11, The first housing accommodates the module, and the second housing is provided with glass.

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