JP6125079B2 - Electronic clock - Google Patents

Description

  The present invention relates to an electronic timepiece, and more particularly to an electronic timepiece including a battery having a high energy density such as a lithium secondary battery.

  Since a battery as a power source used in a small portable electronic timepiece such as a wristwatch or a pocket watch is required to be small in size, a button type battery is mainly used regardless of a primary battery or a secondary battery. Patent Document 1 discloses a structure for holding a secondary battery used in an electronic timepiece, in which a button-type secondary battery is sandwiched between a plastic timepiece component and a pressing member, and the button-type secondary battery is covered with the pressing member. In addition, there is a description in which a timepiece component and a pressing member are caulked and fixed.

Japanese Patent No. 3667890

  In recent years, high functionality has been advanced in small portable electronic watches such as watches. Among the functions added by such high functionality, there are those that significantly increase the power consumption of the electronic timepiece. As an example of such, high-frequency transmission / reception functions such as a function of receiving ultra high frequency waves used in a global positioning system typified by GPS (Global Positioning System) and the like, a communication function such as a so-called wireless LAN and Bluetooth (trademark), etc. Is mentioned. In these cases, a high-frequency circuit and a decoder circuit for transmitting and receiving ultra-high frequency have to be operated, so that the temporary power consumption of the electronic timepiece is large.

  In order to supply sufficient electric power for such a function, a small battery that can supply large electric power must be used. A typical example of such a battery is a lithium secondary battery.

  Here, a battery having a high energy density, such as a lithium secondary battery, generates a large amount of heat when the positive electrode and the negative electrode are short-circuited. In this regard, in general button type batteries, the exterior itself is an electrode, and the positive electrode and the negative electrode are adjacent to each other with a slight gap, so only metal such as tweezers touches carelessly. There is a risk that both poles will short-circuit. By using the battery holding structure described in Patent Document 1 described above, such a handling risk is considered to be considerably reduced even in the case of a button-type lithium secondary battery.

  Note that the above discussion is not necessarily limited to only secondary batteries, but also applies to large primary batteries with high energy density that require management of individual manufacturing dates, etc., or with large amounts of energy retention. .

  The problem to be solved by the present invention is to enable inspection of a battery without removing the battery package from the movement body, and to reduce the risk of short-circuiting during the inspection.

  In order to solve the above-described problems, an electronic timepiece according to the present invention includes an insulating holder having a battery housing portion that is a recess for housing a button-type battery, and the battery on the upper surface of the battery. A battery package including a conductive presser sandwiched between and fixed thereto, a movement main body to which the battery package is fixed, and an outer case that houses the battery package and the movement main body, and the holder includes: An inspection opening for exposing an inspection electrode provided in the movement main body is provided, and a convex portion is provided around the inspection opening.

  According to the present invention, the battery can be inspected through the inspection opening without removing the battery package from the movement main body, and the risk that the inspection electrode and the upper electrode of the battery are short-circuited during the inspection can be reduced.

It is a top view of the electronic timepiece concerning the embodiment of the present invention. It is a perspective view of the movement of the electronic timepiece of this embodiment. It is a top perspective view of a battery package. It is a top perspective view of a holder. It is sectional drawing by the VV line of FIG. 4 is a cross-sectional view taken along line VI-VI in FIG. 4 to which a cross section of the movement main body and the exterior case is added. It is a top perspective view of a battery. It is a bottom surface perspective view of a battery. It is a top perspective view of a presser. It is a top perspective view of a battery package holder. It is sectional drawing by the VIII-VIII line of FIG. It is sectional drawing by the IX-IX line of FIG. It is sectional drawing by the XX line of FIG. It is sectional drawing corresponding to FIG. 8 which shows the modification of embodiment of this invention. It is sectional drawing corresponding to FIG. 8 which shows the further modification of embodiment of this invention.

  FIG. 1 is a plan view showing an electronic timepiece 1 according to an embodiment of the present invention. In this embodiment, the electronic timepiece 1 is shown as a wristwatch, but other types such as a pocket watch may be used as long as they are small and portable.

  Reference numeral 2 in the drawing denotes an exterior case, and band attaching portions 3 are provided at the 12 o'clock position and the 6 o'clock position. A crown 4 is provided on the side of the 3 o'clock side of the electronic timepiece 1. In the figure, the 12 o'clock direction of the electronic timepiece 1 is the upward direction in the figure, and the 6 o'clock direction is the downward direction in the figure.

  The electronic timepiece 1 is a pointer type as shown, and the hour hand, the minute hand, and the second hand are provided coaxially with the central position of the electronic timepiece 1 as the center of rotation. In this embodiment, the second hand is coaxial with the hour hand. However, like a chronograph type timepiece, the second hand may be replaced with a so-called chronograph hand, and the second hand may be arranged at an arbitrary position as a sub hand. Further, a date window is provided at the 6 o'clock position of the dial so that the date display displayed on the date dial can be visually recognized. Note that the electronic timepiece 1 of the present embodiment is a so-called radio timepiece, and a display 5 for informing the user of the reception state is stamped or printed at a position outside the dial of the outer case 2. The second hand indicates one of these indications 5 during and before reception of the radio wave including time information, in this embodiment, during reception of the radio wave from the artificial satellite in the global positioning system.

  FIG. 2 is a perspective view of the movement 6 of the electronic timepiece 1 according to the present embodiment. The movement 6 includes a movement main body 7 and a battery package 8. Here, the movement main body 7 is a movement 6 of the electronic timepiece 1 in which power-related components, that is, a battery package 8 to be described later is removed, and an electronic circuit board including a timepiece circuit, a motor, a train wheel, and the like. Includes a frame called the main plate to hold. The winding core 9 to which the crown 4 (see FIG. 1) is attached is visible on the right side in the figure. In describing the present invention, since the structure of the movement 6 is not important, the detailed portion of the movement 6 is omitted in FIG. The battery package 8 is a member in which a battery 10 and a structural part for attaching the battery 10 to the movement body 7 and an electrode are integrally formed. In FIG. 2, in addition to the battery 10, a holder 11 and a presser 12 are provided. I can see it. The battery package 8 is fixed to the movement main body 7 with a screw 14 via a battery package retainer 13. Note that the outer peripheral structure of the holder 11 has a complicated structure as shown in FIGS. 3 and 4, but in FIG. 2, the movement body 7 and the battery package 8 are simplified for the sake of clarity. It is shown in the figure. In the present specification, the surface of the movement 6 on which the battery package 8 is attached is referred to as the upper surface, and the opposite surface is referred to as the lower surface. Therefore, this figure is a perspective view of the upper surface of the movement 6 as viewed from obliquely above. If this direction is referred to in the electronic timepiece 1 shown in FIG. 1, the upper surface is a surface facing the back cover side of the electronic timepiece 1, and the lower surface is a surface facing the windshield side of the electronic timepiece 1.

  FIG. 3 is a top perspective view of the battery package 8. The battery 10 is a button-type battery as shown, and is a lithium secondary battery in this embodiment. The upper and side surfaces of the battery 10 visible in the figure are electrodes, and in this example, are positive electrodes. The lower surface of the battery 10 not shown in the figure is a negative electrode. However, there is no particular limitation on the polarity, and this may be reversed. For convenience, the electrode having the polarity on the upper surface side is hereinafter referred to as the upper surface electrode, and the electrode having the electrode on the lower surface side is referred to as the lower surface electrode. In addition, information 15 relating to the manufacture of the battery 10 is displayed at a position indicated by a broken line frame at the center of the upper surface of the battery 10 by a method such as printing, marking, or laser marking. Here, there are various types of information 15 related to manufacturing, but at least one of the manufacturing number, manufacturing lot number, and manufacturing date is exposed without being covered by the presser 12. This is because they are important for inventory management and history management of the battery 10 and need to be visible. In addition, as the information 15 regarding manufacture, it is preferable that it is information which can identify the object of the battery 10, such as a manufacturing number. Note that the manufacturing information 15 is not limited to numbers, and may be encoded in any manner. In addition to numbers using numbers, numbers using alphabets or one-dimensional or two-dimensional barcodes may be used.

  The presser 12 is a conductive, preferably metallic member, and holds and fixes the battery 10 to the holder 11. A fixing portion 16 is provided from the presser 12 so as to extend to the outside in plan view of the battery 10, and the presser 12 is fixed to the holder 11 by joining the fixing portion 16 to the holder 11 by the joining portion 17. It is preferable that the joining method by the joining part 17 is non-decomposable joining such as caulking or rivet. Here, the non-decomposable joint refers to a joining method that cannot be decomposed unless plastic deformation or fracture is involved. In this embodiment, the joining portion 17 is joined by caulking. Specifically, a cylindrical or other protrusion formed on the holder 11 is inserted into a hole formed on the presser 12 and the tip of the protrusion is deformed by, for example, pressing a heated tool to form the presser 12. It is preferable to prevent the protrusions from being extracted from the formed holes. The presser 12 fixed to the holder 11 in this manner sandwiches the battery 10 with the holder 11 at the periphery of the upper surface of the battery 10 as shown in the figure, and holds and fixes the battery 10. Therefore, the center part of the upper surface of the battery 10 is exposed, and the information 15 related to manufacture is exposed so as to be visible. In addition, the battery 10 may expand or contract with changes in use or temperature, but the dimensional change is greatest with respect to the thickness direction of the battery 10 at the center of the upper surface. By holding and avoiding this portion, the detachment of the battery 10 is prevented while allowing the dimensional change of the battery 10.

  The holder 11 is an insulating member, and is preferably a molded product of a thermoplastic synthetic resin. It is necessary for the holder 11 to be thermoplastic in order to perform crimping at the above-described joint portion 17, but depending on the joining method of the joint portion 17, the holder 11 may not necessarily be thermoplastic. The outer shape of the holder 11 is substantially equal to the outer shape of the movement 6 (see FIG. 2) and is generally circular. Although several through holes are provided in the holder 11, the upper surface side opening 18 and the inspection opening 19 are visible in FIG. 3.

  FIG. 4 is a top perspective view of the holder 11. On the right side in the figure, a recess having a substantially circular outer shape can be seen, which is a battery housing portion 20 that houses the battery 10. On the bottom surface of the battery housing part 20, a lower surface side conduction opening 21 which is a through hole is provided. Further, as described above, the protrusion 22 is for forming the joint portion 17 (see FIG. 3) by caulking. In addition, a projection 23 is provided around the inspection opening 19 so as to protrude from the upper surface of the holder 11 so as to surround the inspection opening 19. These through holes will be described later.

  Further, as shown in the figure, a step is provided on the outer periphery of the holder 11 and a flange 46 having an outer shape slightly larger than the outer diameter of the upper surface thereof is formed. A plurality of elastic deformation portions 47 are provided at appropriate positions on the outer edge portion of the upper surface of the flange 46. A plurality of convex portions 48 protruding in the radial direction are provided at appropriate positions on the outer peripheral surface of the flange 46.

  FIG. 5 is a cross-sectional view taken along line VV in FIG. The elastic deformation portion 47 includes a thin portion 49 where the thickness of the flange 46 is partially reduced, and a protrusion 50 provided on the upper surface side of the thin portion 49. When another member (the lower surface of the back cover, as will be described later) is disposed on the upper surface of the flange 46, the elastic deformation portion 47 has a protrusion 50 that abuts against the other member, and the thin portion 49 faces downward. The holder 11 is pressed downward by elastically deforming in the opposite direction. With this structure, the movement 6 (see FIG. 2) including the battery package 8 is elastically pressed toward the windshield side inside the outer case 2 and is fixed without causing play in the thickness direction (thrust direction). The The shape and structure of the elastic deformation portion 47 shown here are merely examples, and other shapes and structures may be adopted as long as the structure is elastically deformed with respect to the force acting from the upper surface side of the flange 46.

  FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 4 with the cross sections of the movement main body 7 and the outer case 2 added. The outer case 2 is formed of a case 51 and a back cover 52. The case 51 and the back cover 52 are formed by a peripheral screw formed on the outer peripheral surface of a screw projection 53 protruding in a cylindrical shape below the back cover 52. Fixed to each other. Further, the lower surface of the screw protrusion 53 and the upper surface of the flange 46 abut each other in the elastic deformation portion 47 shown in FIG. Furthermore, in the convex part 48 formed so that it might protrude partially on the outer peripheral surface of the flange 46, the holder 11 and the inner peripheral surface of the trunk | drum 51 contact | abut. Here, since the width of the convex portion 48 is narrow, even if a slight dimensional error exists between the holder 11 and the inner surface of the body 51, the error is absorbed by the elastic deformation or plastic deformation of the convex portion 48. The As a result, the movement 6 (see FIG. 2) provided with the battery package 8 is fixed inside the outer case 2 without causing play in the radial direction (radial direction).

  As described above, in the present embodiment, when the movement 6 is fixed inside the exterior case 2, the elastically deformable portion 47 and the convex portion 48 formed on the holder 11 of the battery package 8 are respectively exteriorized in the thickness direction and the radial direction. The movement 6 is supported by contacting the case 2. This is because a large inertial force acts on the battery package 8 including the heavy battery 10 when an external force such as an impact acts on the electronic timepiece 1, so that the battery package 8 itself is directly fixed to the exterior case 2. This prevents the movement 6 from being damaged, for example, accidents such as the battery package 8 being detached from the movement body 7.

  In addition, the structure which fixes the movement 6 shown here to the inside of the exterior case 2 is an example, and you may change suitably as needed. For example, the convex portion 48 for fixing the movement 6 in the radial direction is provided not on the outer peripheral surface of the flange 46 but on the outer peripheral surface of the upper surface of the holder 11 so as to abut against the inner peripheral surface of the screw projection 53 of the back cover 52. Good. Alternatively, the elastic deformation portion 47 may be provided not on the flange 46 but on the upper surface of the holder 11 so as to directly abut against the lower surface of the back cover 52.

  FIG. 7A is a top perspective view of the battery 10. In the center of the upper surface of the battery 10, information 15 relating to manufacturing is displayed as described above. Further, the upper surface and side surfaces of the battery 10 are upper surface electrodes 24.

  FIG. 7B is a bottom perspective view of the battery 10. A lower surface electrode 25 is provided on the lower surface of the battery 10 so as to be separated from the upper surface electrode 24. In the present embodiment, a metallic lead plate 26 is attached to the lower surface electrode 25. The lead plate 26 has a lower surface side terminal 27, and the lower surface side terminal 27 protrudes to the lower surface side of the battery 10 as shown in the figure. The lower surface side terminal 27 has a shape corresponding to the lower surface side conduction opening 21 of the holder 11 shown in FIG. 4, and when the battery 10 is fixed to the holder 11, the lower surface side terminal 27 becomes the lower surface side conduction opening. 21 extends through the lower surface of the holder 11. The tongue portion 28 is a structure for aligning the direction of the battery 10 when the battery 10 is accommodated in the battery accommodating portion 20 of the holder 11. The battery accommodating portion 20 has a recess corresponding to the shape of the tongue portion 28. Is provided. The lead plate 26 is fixed to the lower surface electrode 25 by welding by a welding portion 29. Other fixing methods such as brazing may be used.

  FIG. 8 is a top perspective view of the presser 12. In this embodiment, the presser 12 is a punched and bent metal plate. A step 30 is formed at a position where the presser 12 is on the outer periphery of the portion in contact with the upper surface of the battery 10, so that the battery 10 and the presser 12 can be easily aligned. Further, each of the fixing portions 16 is provided with a protrusion through hole 31, which is caulked by penetrating the protrusion 22 (see FIG. 4) of the holder 11 and then deforming the protrusion 22, thereby joining the joint 17. (See FIG. 3). The fixing portion 16 is further provided with holes 32 respectively. In addition, the presser 12 is provided with side conduction portions 33 that are electrically connected to each other by being elastically pressed against the side surface of the battery 10 at three locations in the present embodiment. As described above, when the battery 10 expands or contracts due to changes in use or temperature, the outer peripheral portion of the battery 10, that is, the dimension of the side surface hardly changes. This is to reduce the occurrence of. The number of side surface conductive portions 33 is not particularly limited, but a plurality of side surface conductive portions 33 is preferable because the occurrence of contact failure can be further reduced.

  FIG. 9 is a top perspective view of the battery package holder 13. The battery package holder 13 fixes the battery package 8 to the movement body 7 by screwing (see FIG. 2), and electrically connects the upper surface electrode 24 of the battery 10 to the substrate of the movement body 7. The battery package holder 13 may also be formed by punching and bending a metal plate by pressing or the like.

  The battery package retainer 13 is provided with a plurality of screw holes 34 and 35 (five locations in the illustrated example), and the battery package retainer 13 is screwed to the movement main body 7 with screws 14. The battery package 8 is held and fixed so as to sandwich the battery package 8 with the movement body 7 (see FIG. 2). Among these, the screw hole 35 is provided at a position corresponding to the hole 32 of the presser 12. In this portion, the screw 14 passes through the holder 11 and the presser 11 to fix the battery package 8. Become. For this reason, the battery package presser 13 is strongly pressed against the presser 12, and the conduction between the two is ensured. As described with reference to FIG. 6, the hole 32 of the presser 12 is provided in the fixing portion 16. Therefore, the battery 10 is held and fixed to the holder 11 not only by the joint 17 provided in the protrusion through-hole 31 but also by screwing in the hole 32, and when an external force such as impact or vibration is applied. Also effectively prevents the battery 10 from being detached.

  The tongue portion 36 is a portion for contacting the upper surface of the battery 10 to establish conduction. Along with conduction around the screw hole 35, double conduction is ensured. The upper surface side terminal 37 is largely bent toward the lower surface side, and passes through the upper surface side conduction opening 18 (see FIG. 4) of the holder 11 and protrudes toward the lower surface side of the holder 11. Further, the ground terminal 38 is bent to the upper surface side, and when the movement 6 is incorporated in the electronic timepiece 1, it comes into contact with, for example, the back cover of the outer case 2 and takes a ground potential. The opening 39 is an opening that is slightly larger than the convex portion 23 of the holder 11, and the convex portion 23 is inserted into the opening 39.

  10 is a cross-sectional view taken along line XX of FIG. In the figure, a base plate 40, a first circuit board 41, a circuit support base 42, a second circuit board 43 and a screw pipe 44 constituting the movement main body 7 are shown. The circuit support 42 is a member for instructing and separating the first circuit board 41 and the second circuit board 43, and is manufactured by molding an insulating material such as synthetic resin. The figure shows a state in which the battery package presser 13, the presser 12, the holder 11 and the movement body 7 are fastened together and fixed by the screw 14 screwed to the screw pipe 44. Further, the state in which the holder 11 and the presser 12 are joined to each other so as not to be disassembled by the joining portion 17 is also shown. In addition, the lower surface side terminal 27 of the lead plate 26 penetrates the lower surface side conduction opening 21 provided on the bottom surface of the battery accommodating portion 20 of the holder 11 and comes into contact with the first circuit board 41 and is conductive. I can see it. Further, the tongue 36 of the battery package holder 13 is in contact with the upper surface of the battery 10.

  As shown in the figure, the circuit support base 42 is divided into two left and right members by the battery accommodating portion 20 of the holder 11. This is to make the movement 6 as thin as possible, but the left and right circuit support bases 42 may be connected to form one member. In that case, the circuit support base 42 is provided with a through hole through which the lower surface side terminal 27 passes.

  11 is a cross-sectional view taken along line XI-XI in FIG. The figure shows a state in which the upper surface side terminal 37 of the battery package holder 13 passes through the upper surface side conduction opening 18 of the holder 11 and comes into contact with the second circuit board 43 of the movement body 7. .

  12 is a cross-sectional view taken along line XII-XII in FIG. In the drawing, a cross section of the inspection opening 19 of the holder 11 is shown. An inspection electrode 45 is provided on the upper surface of the second circuit board 43 of the movement body 7 exposed through the inspection opening 19. Since the inspection electrode 45 is electrically connected to the lower surface electrode, the voltage of the battery 10 can be inspected using a tester or the like even when the battery package 8 is assembled to the movement 6 (see FIG. 2). At this time, the battery package holder 13 is electrically connected to the upper surface electrode of the battery 10, but the convex portion 23 prevents the tester from simultaneously contacting and short-circuiting the inspection electrode 45 and the battery package holder 13. Even when a conductive member such as a screw is dropped in the inspection opening 19, the projection 23 prevents the member from coming into contact with the inspection electrode 45 and the battery package holder 13 at the same time. Is reduced. In addition, it is preferable that the height of the convex portion 23, that is, the protruding length from the upper surface of the holder 11 is larger than the thickness of the battery package holder 13.

  FIG. 13 is a cross-sectional view corresponding to FIG. 10 showing a modification of the present embodiment. The modification shown in the figure is different from the previous embodiment in that the lower surface side terminal 27 is not attached to the lower surface of the battery 10 but is attached to the first circuit board 41 of the movement body 7. . In this case, the lower surface side terminal 27 protrudes from the first circuit board 41 to the upper surface side, contacts the lower surface of the battery 10 and is conducted. The lower surface side terminal 27 may be attached to the first circuit board 41 by any method such as soldering, brazing, and screwing. Alternatively, a metal member that elastically deforms, for example, a spring, may be simply disposed between the first circuit board 41 and the lower surface of the battery 10.

  In such a configuration, the member that is electrically connected to the lower surface electrode 25 does not protrude from the lower surface of the battery package 8, that is, the lower surface of the holder 11, so that the risk of a short circuit when the battery package 8 is handled is further reduced. Further, since the lead plate 26 is not attached to the lower surface of the battery 10, the entire movement can be made thinner by the thickness of the lead plate 26. Alternatively, when the thickness of the entire movement is not changed, the left and right circuit support bases 42 are connected between the battery housing portion 20 and the first circuit board 41 using a gap corresponding to the thickness of the lead plate 26. One member can be used.

  FIG. 14 is a cross-sectional view corresponding to FIG. 10 showing a further modification of the present embodiment. In this drawing, a cross-sectional view corresponding to FIG. 11 is also shown for the sake of convenience in order to show the relationship between the members.

  In this modification, the presser 12 also serves as the battery package presser 13. With this structure, it is not necessary to manufacture and assemble the presser 12 and the battery package presser 13 as separate members, and the structure is simplified. At the same time, the upper surface side terminal 37 shown in FIG. 11 is not provided in the presser 12. Instead, the upper surface side terminal 37 is attached to the second circuit board 43 of the movement body 7. The upper surface side terminal 37 protrudes from the second circuit board 43 to the upper surface side, passes through the upper surface side conduction opening 18, and elastically contacts the lower surface of the presser 12 to be conductive. The upper surface side terminal 37 may be attached to the second circuit board 43 by any method such as soldering, brazing, and screwing. Alternatively, a metal member that elastically deforms, for example, a spring, may be simply disposed between the second circuit board 43 and the lower surface of the presser 12. As is clear from FIG. 14, the presser 12 covers the upper surface side conductive opening 18 in a planar manner from the upper surface.

  In such a configuration, since the member that is electrically connected to the upper surface electrode 24 does not protrude from the lower surface of the battery package 8, that is, the lower surface of the holder 11, the risk of a short circuit when the battery package 8 is handled is further reduced.

  The specific configurations shown in the embodiment and the modifications described above are examples, and those skilled in the art may make various modifications. For example, the cross-sectional configuration of the movement main body 7 may be changed, and the specific shapes of the various members illustrated may be variously modified.

  In addition, in one aspect of the embodiment of the present invention described above, the presser extends to the outside in a plan view of the battery, and the battery package is fixed to the movement main body with a screw penetrating the presser, and the upper surface electrode of the battery is attached. Conduct to the movement body.

  In this way, the presser serves as the battery package presser, and it is not necessary to manufacture and assemble the presser and the battery package presser as separate members, and the structure is simplified.

  In another aspect of the embodiment of the present invention, the holder has an upper surface side conduction opening that exposes the lower surface of the presser, and the movement body passes through the upper surface side conduction opening and is elastic to the lower surface of the presser. Having a terminal that makes electrical contact.

  In this case, since the terminal does not protrude from the battery package to the lower surface side, the risk of short-circuiting during handling can be reduced.

1 Electronic watch, 2 exterior case, 3 band mounting part, 4 crown, 5 display, 6 movement, 7 movement body, 8 battery package, 9 core, 10 battery, 11 holder, 12 presser, 13 battery package presser, 14 screw , 15 Manufacturing information, 16 fixing part, 17 joint part, 18 upper surface side opening for conduction, 19 inspection opening, 20 battery housing part, 21 lower surface side opening for conduction, 22 protrusion, 23 convex part, 24 upper surface electrode, 25 Lower surface electrode, 26 Lead plate, 27 Lower surface side terminal, 28 Tongue portion, 29 Welded portion, 30 Step, 31 Protrusion through hole, 32 holes, 33 Side conduction portion, 34, 35 Screw hole, 36 Tongue portion, 37 Upper surface side terminal 38 ground terminal, 39 opening, 40 ground plane, 41 first circuit board, 42 circuit support base, 43 second circuit board, 44 screw pipe, 45 inspection electrode, 46 flange, 7 elastically deformable portion, 48 protrusion, 49 the thin portion, 50 protrusion, 51 cylinder, 52 back lid 53 screw projection.

Claims (3)

A battery package comprising: an insulating holder having a battery housing portion that is a recess for housing a button-type battery; and a conductive presser that sandwiches and fixes the battery between the holder and the upper surface of the battery When,
A movement body to which the battery package is fixed;
An exterior case that houses the battery package and the movement main body,
The electronic timepiece wherein the holder has an inspection opening for exposing an inspection electrode provided in the movement main body, and a convex portion is provided around the inspection opening. The presser extends to the outside in plan view of the battery, fixes the battery package to the movement main body with a screw passing through the presser, and electrically connects the upper surface electrode of the battery to the movement main body.
The electronic timepiece according to claim 1. The holder has an upper surface side opening for exposing the lower surface of the presser,
The electronic timepiece according to claim 2, wherein the movement main body has a terminal that penetrates the upper surface side conduction opening and elastically contacts the lower surface of the presser.

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