Electronic clock

Abstract

To provide an electronic watch which prevents a solar panel from being broken even when an adhesive member is removed in disassembly.SOLUTION: An electronic watch 100 comprises: a dial plate 33 serving as a display board; a module 2 serving as a base member; a solar panel 5 including solar cells 5a, 5b; and an adhesive member 7 bonding the dial plate 33 to the module 2. The adhesive member 7 and the solar panel 5 are arranged in an adhesive member arrangement hole part 5e which is a position where the adhesive member and the solar panel do not overlap in plan view.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an electronic timepiece. [Background technology]

[0002] Conventionally, electronic timepieces equipped with solar panels that receive light and generate electricity have been widely known. The solar panel is sometimes mounted between a display panel such as a dial and a module. In the electronic timepiece disclosed in Patent Document 1, the solar panel is mounted on the upper surface of a base plate on top of the module. The dial is supported by the outer edge of the base plate and is positioned so that the underside of the dial abuts against the upper surface of the solar panel. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-98144 Summary of the Invention [Problem to be solved by the invention]

[0004] for example, When the solar panel is arranged so as to come into contact with the display board and the module, adhesive members such as double-sided tape may be placed between the solar panel and the display board, and between the solar panel and the module, to prevent misalignment of the solar panel or to fix the display board. In such cases, When removing the display panel during disassembly for repairs or the like of an electronic watch, the solar panel is removed from the module along with the display panel, making it difficult to remove the display panel.

[0005] The present invention is The display panel can be easily removed from the module. To provide an electronic watch. [Means for solving the problem]

[0006] The electronic timepiece of the present invention comprises a display plate and a base member, and has a pin portion formed on the outer edge of the display plate that protrudes toward the base member, the display panel is composed of a first display panel and a second display panel disposed on a lower surface of the first display panel, the pin portion is provided on an outer edge portion of the first display panel, and the second display panel has a protrusion portion protruding outward from an outer periphery of the second display panel; The base member has a mating hole into which the pin is inserted. an engagement recess that engages with the protrusion; The present invention is characterized by having the following. [Effects of the Invention]

[0007] According to the present invention, during decomposition Easily remove the display board from the module It is possible. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a front view of an electronic timepiece according to an embodiment of the present invention. [Figure 2] 1 is a front view of an electronic timepiece according to an embodiment of the present invention, with the case, hands, etc. omitted, showing the dial attached to the module. FIG. [Figure 3] FIG. 1 is a front view showing how a solar panel of an electronic timepiece according to an embodiment of the present invention is attached to a module. [Figure 4] FIG. 1 is an exploded perspective view showing the dial, solar panel, and module of an electronic timepiece according to an embodiment of the present invention. [Figure 5] FIG. 3 is a cross-sectional view of the electronic timepiece according to the embodiment of the present invention taken along line VV in FIG. 2. [Figure 6] 6 is a cross-sectional view of the electronic timepiece according to the embodiment of the present invention taken along line VI-VI in FIG. 5. DETAILED DESCRIPTION OF THE INVENTION

[0009] An embodiment of the present invention will be described below with reference to the drawings. The electronic timepiece 100 is a so-called analog wristwatch, and as shown in FIG. 1, it has a case 1 to which a band 200, indicated by a two-dot chain line, is attached. A crystal 11 made of transparent glass or the like is provided on the visible side of the case 1, and a back cover (not shown) is attached to the back side of the case 1. The outer periphery of the case 1 is provided with a plurality of operation buttons 12 for inputting various operation commands, such as commands to set the time. The case 1, band 200, and the like can be formed in the same manner as known cases. In the following description, the side on which the crystal 11 is provided, which is the near side of the paper in FIG. 1, will be referred to as the top, and the opposite side (the back cover side, not shown) will be referred to as the bottom.

[0010] A display unit 3 is provided inside the case 1. The display unit 3 is an analog display unit equipped with hands 31. The hands 31 include a second hand, a minute hand, and an hour hand, and are connected to corresponding hand stems 31a (stem stems). The display unit 3 also includes a plurality of small hands 32 that indicate the stopwatch, day of the week, etc. Each small hand 32 is connected to a corresponding small hand stem 32a. The display unit 3 also includes a substantially disc-shaped dial 33 that serves as the display panel, and a substantially annular bezel 34 that is positioned on the outer periphery of the dial 33. The bezel 34 has abbreviated characters 341 that display the time.

[0011] As shown in Figures 2 and 4, the dial 33 is formed integrally by superimposing an upper dial plate 33a and a lower dial plate 33b and bonding them together. The upper dial plate 33a is made of a metal such as aluminum or stainless steel. The lower dial plate 33b is made of a resin or other material and is optically transparent. A through-hole 331 is provided in the approximate center of the dial 33, through which the shank 31a of the hand 31 is inserted. The through-hole 331 is a hole that passes through both the upper dial plate 33a and the lower dial plate 33b. The dial 33 is also provided with a date display portion 332, which is a small window that displays the date display of the date wheel 21, near the outer periphery at approximately the 4 o'clock position. The date display portion 332 is a roughly rectangular hole that passes through both the upper dial plate 33a and the lower dial plate 33b.

[0012] The upper dial plate 33a is formed with a plurality of small, open-shaped windows 33a1, 33a2, and 33a3. The small window 33a1 is located on the 12 o'clock side and is formed in a circular shape. The small window 33a2 is located approximately on the 9 o'clock side and is formed in a shape where a large diameter hole and a small diameter hole are connected. The small window 33a3 is located approximately on the 6 o'clock side and is formed in a generally fan shape. The lower dial plate 33b is exposed from each of the small windows 33a1, 33a2, and 33a3. The lower dial plate 33b exposed in each of the small windows 33a1, 33a2, and 33a3 has through holes 33b1, 33b21, 33b22, and 33b3 formed approximately at the center of each small window 33a1, 33a2, and 33a3, through which the small hand shaft 32a of the corresponding small hand 32 is inserted. A decorative plate 33c formed in an arc shape following the arc-shaped outer periphery of the small window portion 33a3 is provided on the arc-shaped outer periphery.

[0013] A plurality of blades 33a4-1 to 33a4-5 that protrude outward are provided on the outer peripheral edge of the upper dial 33a. Specifically, blades 33a4-1 to 33a4-5 are formed at positions approximately between 12 o'clock and 1 o'clock, approximately between 2 o'clock and 3 o'clock, approximately 5 o'clock, approximately 8 o'clock, and approximately 10 o'clock. Blades 33a4-1 to 33a4-5 are formed so that their tip portions protrude outward beyond the outer edge of module 2 (module ring 22), which will be described later. Furthermore, of the plurality of blades 33a4-1 to 33a4-5, blades 33a4-3 and 33a-5 that are arranged approximately opposite each other are provided on their undersides with pins 35 that stand upright downward (toward module 2).

[0014] Additionally, a positioning protrusion 33b4 is formed on the outer peripheral edge of the lower dial 33b. The tip of the positioning protrusion 33b4 protrudes beyond the outer edge of the upper dial 33a, but is set to a size that does not exceed the outer edge of the module 2 (module ring 22).

[0015] 4, which is the base member, includes a timepiece movement made up of a motor and gear train mechanism (not shown) for moving the hands 31 (hand shaft portion 31a) and small hand 32 (small hand shaft portion 32a), a circuit board (not shown) on which various electronic components are mounted, and a secondary battery that supplies power to each functional portion of the electronic timepiece 100. In addition, a date wheel 21 is provided on the top surface of the module 2 and is driven by a motor, gear train mechanism, etc.

[0016] A module ring 22 formed in a circular shape with approximately the same diameter as a module main body 23 that houses a motor, a gear train mechanism, etc. is disposed on the outer periphery of the upper surface of the module 2. The module ring 22 is fixed to the upper surface of the outer periphery of the module main body 23 by notched claw fitting or the like. In this way, the upper surface of the module ring 22 is formed higher than the inner surface of the module ring 22 (the upper surface of the module main body 23).

[0017] A plurality of recesses 22a are formed in the module ring 22. Each recess 22a engages with a positioning protrusion 33b4 on the lower dial 33b of the dial 33. Two pairs of positioning protrusions 33b4 (four in total) are formed so that two of the positioning protrusions 33b4 face each other, and one of the pairs has a recess formed in it so that it can be positioned together with the module 2 by a positioning pin (not shown) on the case 1.

[0018] 5 and 6, the module 2 has a fitting hole 2a formed through the module ring 22 and the module main body 23 at a position corresponding to the pin 35 of the dial 33. The pin 35 is inserted into the fitting hole 2a so as to be press-fitted, thereby fixing the dial 33 to the module 2. A substantially circular hole 2a22 with an open interior is formed in the portion of the fitting hole 2a corresponding to the module ring 22. The bottomed hole 2a23 of the fitting hole 2a corresponding to the module main body 23 has flat chamfered portions 2a1 formed on four opposing sides of the inner surface. In this way, the fitting hole 2a has a substantially rectangular shape in cross section, allowing the cylindrical pin 35 to be inserted so as to be press-fitted.

[0019] As shown in Figures 3 and 4, a substantially circular solar panel 5 is disposed between the module 2 and the dial 33. The solar panel 5 has multiple protrusions 5c protruding from the outer periphery of the solar panel 5. The protrusions 5c are disposed between the module ring 22 and the module body 23. The protrusions 5c of the solar panel 5 are in close proximity to or in contact with the underside of the module ring 22 and the surface of the module body 23 at a location corresponding to the module ring 22. The upper surface of the solar panel 5 is in close proximity to or in contact with the underside of the lower dial plate 33b of the dial 33. In this way, the solar panel 5 is held between the module 2 and the dial 33.

[0020] Solar panel 5 includes solar cells 5a and 5b. Solar cell 5a is formed in a position and shape that corresponds to small window 33a1 of dial 33. Solar cell 5b is formed in a position and shape that corresponds to the shape of small window 33a2 and small window 33a3 of dial 33 when they are connected together. In other words, solar cells 5a and 5b are positioned so as to overlap small window 33a1, 33a2, and 33a3.

[0021] The solar panel 5 generates electricity from the solar cells 5a and 5b that receive light through the dial 33 (small windows 33a1, 33a2, and 33a3 of the upper dial 33a and the lower dial 33b). The electricity is stored in the secondary battery of the module 2 via conductive wires provided in areas of the solar panel 5 other than the solar cells 5a and 5b and contacts provided on the protrusion 5c, providing driving power. The solar cells 5a and 5b are formed with through-holes 5a1 and 5b1 through which the small hand axis 32a is inserted. The solar panel 5 is also formed with a hole 5d at a position and shape corresponding to the date display section 332 of the dial 33. The solar panel 5 is formed with a rectangular adhesive member placement hole 5e in approximately its center.

[0022] The solar panel 5 is disposed on the upper surface of the module 2, which is the base member, and the dial 33 is disposed on the upper surface of the solar panel 5. An adhesive member 7 that adheres the dial 33 to the module 2 is disposed inside the adhesive member disposing hole 5e of the solar panel 5. The adhesive member 7 is indicated by hatching in FIG. 3. In this embodiment, the adhesive member 7 is formed from double-sided tape. Alternatively, an adhesive or the like can be used for the adhesive member 7.

[0023] In this way, the adhesive member 7 is positioned so as not to overlap the solar panel 5 in a plan view (i.e., when viewed from the direction of Figures 1 to 3). The dial 33, module 2, and adhesive member 7 are positioned so as to overlap in a plan view. The adhesive member 7 is also positioned so as not to overlap the small window portions 33a1, 33a2, and 33a3.

[0024] The axis 31a is located within the adhesive member placement hole 5e of the solar panel 5. The adhesive member 7 has a hole 7a formed therein to avoid interference with the axis 31a. That is, the adhesive member 7 is disposed in the center of the dial 33 and has the hole 7a to avoid interference with the through-hole 331 of the dial 33 (in other words, the axis 31a) in a plan view.

[0025] When disassembling and repairing the electronic timepiece 100, first remove the module 2, to which the dial 33 and solar panel 5 are attached, from the case 1. Then, remove the dial 33 from the module 2. At this time, because the tip ends of the wings 33a4-1 to 33a4-5 protrude from the outer edge of the module 2, the dial 33 can be removed by pinching one of the wings 33a4-1 to 33a4-5. A jig may be used to pinch the wings 33a4-1 to 33a4-5. Then, remove the dial 33 by pulling the pin 35 out of the fitting hole 2a.

[0026] The dial 33 is removed by peeling off the adhesive member 7 that bonds the dial 33 to the module 2. At this time, the adhesive member 7 is adhered to the relatively hard upper surface of the module 2 and the underside of the dial 33, so the solar panel 5 remains on the module 2 and is not damaged when the adhesive member 7 is peeled off.

[0027] As described above, the present invention is not limited to the present embodiment and can be implemented with various modifications. For example, although the present embodiment has been described with reference to an analog electronic timepiece 100, the present invention is not limited to analog and can also be implemented with a digital electronic timepiece.

[0028] As described above, according to the embodiment of the present invention, the electronic watch 100 has a dial 33 which is a display panel, a module 2 which is a base member, a solar panel 5 equipped with solar cells 5a and 5b, and an adhesive member 7 which bonds the dial 33 and the module 2, and the adhesive member 7 and the solar panel 5 are positioned so that they do not overlap when viewed in a plane.

[0029] As a result, even if the dial 33 is removed when disassembling the electronic timepiece 100 for repairs or the like, the adhesive member 7 is not adhered to the solar panel 5, reducing the risk of the solar panel 5 being broken or damaged. Note that in this embodiment, the dial 33 is attached directly to the module 2, but this is not limited to this. For example, a separate member may be provided on the module 2 as a base member, and the solar panel 5 and dial 33 may be arranged on this base member via this separate member. The dial 33 may also be another display plate, such as the display plate of a display unit of a digital timepiece or the like.

[0030] Furthermore, the solar panel 5 is disposed on the upper surface of the module 2, the dial 33 is disposed on the upper surface of the solar panel, and the adhesive member 7 is disposed inside the adhesive member disposing hole 5e formed in the solar panel 5. This more reliably reduces the chance of the adhesive member 7 coming into contact with the solar panel 5.

[0031] Furthermore, dial 33 has small windows 33a1, 33a2, and 33a3, solar cells 5a and 5b are positioned so as to overlap small windows 33a1, 33a2, and 33a3 in a plan view, and adhesive member 7 is positioned so as not to overlap small windows 33a1, 33a2, and 33a3 in a plan view. This reduces interference of adhesive member 7 with light reception by solar cells 5a and 5b through small windows 33a1, 33a2, and 33a3.

[0032] The dial also has a through hole 331 in the center, and the adhesive member 7 is disposed in the center of the dial 33, with a hole 7a that avoids interference with the pointer shaft (pointer shaft portion 31a) that is provided in the module 2 and inserted into the through hole 331. This allows the adhesive member 7 to be disposed so as to reduce lifting near the center of the dial 33, even when fixed near the outer periphery of the dial 33, for example, by the pin portion 35 and the fitting hole portion 2a.

[0033] Furthermore, dial 33 has wings 33a4-1 to 33a4-5 whose tip portions at least protrude outward beyond the outer edge of module 2. This allows dial 33 to be easily removed from module 2 using wings 33a4-1 to 33a4-5.

[0034] Furthermore, the blade portions 33a4-3 and 33a4-5 have pin portions 35, and the module 2 has fitting holes 2a into which the pin portions 35 are press-fitted. This allows the dial 33 to be reliably fixed to the module 2 while also making it easy to remove the dial 33 from the module 2.

[0035] The adhesive member 7 is a double-sided tape, which allows the dial 33 and the module 2 to be adhered together using an easy-to-use double-sided tape.

[0036] The above-described embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the inventions and their equivalents as defined in the claims.

[0037] The invention described in the first claim of the present application is as follows: [1] A signboard and A base member; a solar panel including solar cells; an adhesive member that adheres the display panel and the base member; and The electronic timepiece is characterized in that the adhesive member and the solar panel are positioned so as not to overlap each other in a plan view. [2] The solar panel is disposed on the upper surface side of the base member, The display panel is disposed on the upper surface side of the solar panel, The electronic timepiece described in [1] above is characterized in that the adhesive member is placed inside an adhesive member placement hole formed in the solar panel. [3] The display panel has a small window portion, the solar cell is disposed at a position overlapping the small window portion in a plan view, The electronic timepiece according to [1] or [2], wherein the adhesive member is positioned so as not to overlap the small window portion in a plan view. [4] The display panel has a through hole in the center, The electronic timepiece according to any one of [1] to [3], characterized in that the adhesive member is provided with a hole portion that avoids interference with the pointer shaft that is provided on the base member and inserted into the through-hole, and is positioned in the center of the display plate. [5] An electronic timepiece according to any one of [1] to [4], characterized in that the display plate has a wing portion that protrudes outward beyond the outer edge of the base member. [6] The wing portion has a pin portion, The electronic timepiece according to [5] above, wherein the base member has a fitting hole into which the pin portion is inserted. [7] The electronic timepiece according to any one of [1] to [6], wherein the adhesive member is a double-sided tape. [Explanation of symbols]

[0038] 1 case 2 modules 2a Fitting hole portion 2a1 Chamfered portion 2a22 hole 2a23 hole 3 Display section 5 Solar panel 5a Solar cell 5a1 Through hole 5b Solar cell 5b1 Through hole 5c Protrusion 5d Hole 5e Adhesive member placement hole 7 Adhesive member 7a Hole 11 Windshield member 12 Operation button 21 Date indicator 22 Module ring 22a Recess 23 Module body 31 Pointer 31a Pointer shaft 32 Small needle 32a Small needle shaft 33 Dial 33a Upper dial 33a1 Small window part 33a2 Small window part 33a3 Small window 33a4-1~33a4-5 Habe 33b Lower dial plate 33b1 Through hole 33b21 Through hole 33b22 Through hole 33b3 Through hole 33b4 Positioning protrusion 33c Decorative board 34 Partition board 35 Pin section 100 Electronic clock 200 Band 331 Through hole 332 Date display section 341 Abbreviations

Claims

1. A display board and A base member; Equipped with The outer edge of the display plate has a pin portion formed to protrude toward the base member, The display panel includes a first display panel and a second display panel disposed on a lower surface of the first display panel, the pin portion is provided on an outer edge of the first display panel, the second display panel includes a protrusion that protrudes outward from an outer periphery of the second display panel, The base member has a mating hole into which the pin is inserted, and an engaging recess that engages with the protrusion.

2. 2. The electronic timepiece according to claim 1, wherein a wing portion is formed on the outer edge of the display plate so as to protrude outward beyond the outer edge of the base member, and the wing portion has the pin portion.

3. 2. The electronic timepiece according to claim 1, wherein at least two of the protrusions are formed at positions substantially opposite each other.

4. 2. The electronic timepiece according to claim 1, wherein flat chamfered portions are formed on four opposing sides of the inside of the engagement hole.

5. The first display panel is made of metal, 2. The electronic timepiece according to claim 1, wherein the second display plate is made of resin.

6. a solar panel having solar cells; the solar panel is disposed on the upper surface side of the base member, 2. The electronic timepiece according to claim 1, wherein the display panel is disposed on the upper surface of the solar panel.

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