JP2011112461A - Battery-operated timepiece - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a battery-operated watch which allows a specific operator to replace a battery easily and prevents a general user from replacing a battery easily. <P>SOLUTION: The battery-operated timepiece 1 using a battery 2 as a power source is equipped with: a housing section 15 which has a bottom and a side and in which the battery is housed through an upper opening so that the battery can move between a first position and a second position on the bottom; a battery fixing plate 17 which extends from the opening rim to the opening center of the housing section 15 and has a plus terminal which is in contact with a plus surface 2a of the battery 2 placed at the first and second positions; a minus terminal 16 which is provided on the bottom, is in contact with a minus surface 2b of the battery 2, and biases the battery 2 toward the opening; and a stopper 20 which is provided on the surface of the battery fixing plate 17 facing the bottom, is in contact with the plus surface 2a of the battery 2 placed in the first position, and when the battery 2 has moved to the second position, is in contact with a side 2c of the battery 2 placed in the second position to fix the battery 2 in the second position. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a battery-powered timepiece having a plus surface and a minus surface.

  Conventionally, in general timepieces, the battery can be easily attached and detached for battery replacement (see, for example, Patent Documents 1 and 2). However, in a watch using a special battery such as a rechargeable secondary battery, a general user can prevent a battery other than a specified one (for example, a primary battery) from being mistakenly installed when replacing the battery. There is a demand for a structure that does not allow easy battery replacement.

  Therefore, when using a special battery, for example, a configuration in which a battery with a terminal is directly soldered to a circuit board, a configuration in which a battery is modularized to have a different shape from a general battery, and cannot be incorporated, A configuration in which a battery fixing plate or the like is incorporated after the battery is incorporated so that the battery cannot be easily removed is employed.

  FIG. 11 is a diagram showing a conventional battery fixing structure. As described above, the movement 41 is fixed to the movement holder 42, and the circuit board 43 is fixed to the movement 41. Further, the battery minus terminal 45 is fixed to the movement 41 together with the circuit board 43, and the battery support 44 is fixed to the movement holder 42 by the battery fixing plate 46. In this structure, the coin-type battery 47 is fixed by a battery support 44 and a battery fixing plate 46.

  The battery fixing plate 46 is in contact with the positive surface of the battery 47, and a part of the battery fixing plate 46 is connected to the circuit board 43. The battery minus terminal 45 has a spring structure that contacts the minus surface of the battery 47 and pushes the battery 47 in the direction of the battery fixing plate 46, and a part of the battery minus terminal 45 is connected to the circuit board 43.

  When assembling the battery, the battery support 44 is first assembled, and then the battery 47 is assembled. Then, a battery fixing plate 46 is incorporated so as to press the battery 47 from above. Therefore, in order to replace the battery 47, it is necessary to remove the battery fixing plate 46. However, since it is not easy to remove the battery fixing plate 46 with the module incorporated in the watch case, it is difficult for a general user to replace the battery.

JP 2003-227886 A Japanese Patent Laid-Open No. 2003-227887

  However, as described above, when a battery with a terminal is used or when the battery is modularized, there is a problem that the battery size is large and the entire module becomes large. Furthermore, there is a problem that the cost is increased. In addition, when a structure such as a battery fixing plate is attached and cannot be easily removed, there is a problem that it takes time to replace the battery.

  The present invention has been made in view of the above, and an object of the present invention is to provide a battery-powered timepiece that can be easily replaced by a specific operator but cannot be easily replaced by a general user.

  In order to solve the above-described problems and achieve the object, the present invention is a battery-powered timepiece that uses a battery having a plus face and a minus face as a power source, and has a bottom face and a side face, A housing part in which the battery is housed so as to be movable between a first position and a second position on the bottom surface, and projects from the opening edge of the housing part to the center of the opening, and is disposed at the first position and the second position. A battery fixing plate having a positive terminal that contacts the positive surface of the battery; a negative terminal that is provided on the bottom surface, contacts the negative surface of the battery, and biases the battery toward the opening; and the battery fixing Provided on the surface of the plate that faces the bottom surface, contacts the positive surface of the battery disposed at the first position, and further when the battery moves to the second position, the battery is disposed at the second position. The power Contact with the side surface of those, characterized in that it comprises a stopper for fixing the battery to the second position.

  Advantageous Effects of Invention According to the present invention, there is an effect that a general user cannot easily replace a battery while a specific operator can easily replace the battery.

FIG. 1 is a cross-sectional view of a battery-powered wristwatch 1 and a battery 2 inserted into the battery-powered wristwatch 1 according to the first embodiment. FIG. 2 is a view of the battery-powered wristwatch 1 as viewed from the back side of the battery-powered wristwatch 1. FIG. 3 is a diagram illustrating a state in which the battery 2 is inserted. FIG. 4 is an enlarged view of the stopper 20 and the battery 2 shown in FIG. FIG. 5 is a diagram showing the positional relationship between the battery 2 and the battery-powered wristwatch 1 immediately after the battery is inserted. FIG. 6 is a diagram showing the positional relationship between the battery 2 and the battery-powered wristwatch 1 immediately after the battery is inserted. FIG. 7 is a diagram showing the positional relationship between the battery 2 and the battery-powered wristwatch 1 after sliding. FIG. 8 is a diagram showing the positional relationship between the battery 2 and the battery-powered wristwatch 1 after sliding. FIG. 9 is an enlarged view of the stopper 20 and the battery 2 shown in FIG. FIG. 10 is a cross-sectional view of the battery-type wristwatch 3 according to the second embodiment. FIG. 11 is a diagram showing a conventional battery fixing structure.

  Exemplary embodiments of a battery-type timepiece according to the present invention will be explained below in detail with reference to the accompanying drawings.

(First embodiment)
FIG. 1 is a cross-sectional view of a battery-powered wristwatch 1 as a battery-powered timepiece according to the first embodiment and a battery 2 inserted into the battery-powered wristwatch 1. FIG. 2 is a view of the battery-powered wristwatch 1 as viewed from the back side of the battery-powered wristwatch 1. The battery 2 is a battery having a substantially disc shape and a small thickness, such as a button type or a coin type, and has a plus surface 2a and a minus surface 2b.

  In the battery type wristwatch 1, an analog movement 11 for moving the timepiece is arranged in the movement holder 10, and a hand movement shaft 12 projects from the center of the analog movement 11 toward the front side of the battery type wristwatch 1. A circuit board 13 is fixed to the surface 11 a on the back side of the analog movement 11 (the back side of the battery-powered wristwatch 1).

  A battery support portion 14 that supports the battery 2 is further formed in a ring shape on the circuit board 13. The battery support portion 14 forms a housing portion 15 by the side surface 14a and the bottom surface 14b. The battery 2 is accommodated in the accommodating portion 15. The diameter of the accommodating portion 15 is slightly larger than the diameter of the battery 2. For this reason, the battery 2 is slightly movable in the accommodating portion 15.

  The first end 16 a of the battery minus terminal 16 is further fixed to the analog movement 11. The battery minus terminal 16 extends from the bottom surface 14 b of the battery support portion 14 into the housing portion 15, and the second end portion 16 b opposite to the first end portion 16 a is disposed at the approximate center of the housing portion 15. The battery negative terminal 16 has a spring structure that contacts the negative surface 2b of the battery 2 and pushes up the battery 2 toward the back surface.

  A battery fixing plate 17 is further formed on the battery support portion 14. The battery fixing plate 17 is formed in a plate shape. The battery fixing plate 17 is formed with a D-cut opening 17a so that the battery 2 can be inserted obliquely. The diameter of the opening 17 a is larger than the diameter of the battery 2.

  The battery fixing plate 17 functions as a battery plus terminal, and the vicinity of the opening 17 a contacts the plus surface 2 a of the battery 2 accommodated in the accommodating portion 15. A part of the edge 17 b of the battery fixing plate 17 is connected to the circuit board 13.

  Further, a plurality of contact portions 18 extend along the side surface 14 a from the first surface 17 c that is the surface side surface of the battery-type wristwatch 1 of the battery fixing plate 17, and the side surface 2 c of the battery 2 accommodated in the accommodating portion 15. To fix. The plurality of contact portions 18 are formed integrally with the battery fixing plate 17. A spring 19 is provided between the contact portion 18 and the side surface 14a.

  A stopper 20 is further provided on the first surface 17 c of the battery fixing plate 17. The stopper 20 is arranged at a position different from any of the plurality of contact portions 18. The stopper 20 has an end 20a protruding in the direction of the center of the bottom surface 14b, and can be moved in the vertical direction of the accommodating portion 15.

  In the present embodiment, one abutting portion 18 is provided at a position substantially opposite to the stopper 20, and three abutting portions 18 are provided, one at each end of the abutting portion 18. ing.

  The battery fixing plate 17 and the plurality of contact portions 18 of the present embodiment are integrally provided. Specifically, the plurality of contact portions 18 are formed by bending a part of the battery fixing plate 17 toward the bottom surface 14b. The battery fixing plate 17 and the battery negative terminal 16 preferably have a thickness of 0.1 mm to 0.3 mm, for example. Further, the material of the battery fixing plate 17 and the battery negative terminal 16 is preferably a metal having spring characteristics such as stainless steel. This is a viewpoint of securing the strength for fixing the battery and the elasticity for pushing up the battery. It is also suitable in that the contact portion 18 is formed by bending the battery fixing plate 17.

  FIG. 3 is a diagram illustrating a state in which the battery 2 is inserted. FIG. 4 is an enlarged view of the stopper 20 and the battery 2 shown in FIG. When the battery is inserted, the battery 2 is inserted obliquely through the D-cut opening 17a of the battery fixing plate 17. The battery minus terminal 16 is pushed down in the direction of the hand movement shaft 12 by the inserted battery 2. And the battery 2 is inserted under the stopper 20 provided in the battery fixing plate 17, as shown in FIG. That is, the stopper 20 abuts on the positive surface 2 a of the battery 2.

  5 and 6 are diagrams showing the positional relationship between the battery 2 and the battery-type wristwatch 1 immediately after the battery is inserted. FIG. 5 is a cross-sectional view of the battery-powered wristwatch 1, and FIG. 6 is a view of the battery-powered wristwatch 1 as viewed from the back side. Thus, the battery 2 is inserted into the first position on the stopper 20 side, and the contact portion 18 and the battery 2 are not in contact. Thereafter, the battery 2 is slid in the direction parallel to the accommodating portion 15 along the accommodating portion 15 in the diameter direction from the position of the stopper 20, that is, in the direction of the contact portion 18 (the direction of the arrow in FIGS. 5 and 6).

  7 and 8 are diagrams showing the positional relationship between the battery 2 after sliding and the battery-powered wristwatch 1. 7 is a cross-sectional view of the battery-powered wristwatch 1, and FIG. 8 is a view of the battery-powered wristwatch 1 as viewed from the back side. FIG. 9 is an enlarged view of the stopper 20 and the battery 2 shown in FIG.

  Thus, when the battery 2 is slid in the diametrical direction from the first position to the second position, the battery 2 contacts the contact portion 18. During the movement of the battery 2, the stopper 20 that is in contact with the positive surface 2 a of the battery 2 slides on the positive surface 2 a of the battery 2. When reaching the end of the plus surface 2a, the stopper 20 urged in the back direction by the plus surface 2a moves away from the plus surface 2a toward the bottom surface 14b and comes into contact with the side surface 2c of the battery 2. As a result, the side surface 2 c of the battery 2 is urged toward the contact portion 18 by the stopper 20. Therefore, the battery 2 is fixed to the housing portion 15 in a state where the battery 2 is in contact with the plurality of contact portions 18 and the stopper 20. That is, since the stopper 20 is in contact with the side surface 2c of the battery 2, the battery 2 cannot slide to the stopper 20 side.

  On the other hand, when removing the battery 2, the battery 2 in the vicinity of the stopper 20 is pushed down to the surface side, that is, the hand movement shaft 12 side, the spring portion of the battery minus terminal 16 is pushed down, and the battery 2 is moved below the stopper 20. . That is, the stopper 20 is moved to the positive surface 2 a of the battery 2. Thereby, the stopper 20 comes off and the battery 2 can be removed from the accommodating portion 15.

  However, in the state in which the battery 2 is inserted into the accommodating portion 15, only the positive surface 2a of the battery 2 can be seen from the opening 17a, and the presence of the stopper 20 cannot be confirmed. Therefore, the general user does not know that the battery 2 should be slid in order to remove the battery 2, and the battery 2 cannot be removed.

  Thereby, the structure excellent in assembly property can be provided, without employ | adopting the complicated battery fixing structure like the past. Further, when replacing the battery, it is not necessary to remove parts such as the battery fixing plate 17, and the battery can be easily replaced by simply opening the back cover of the finished product. That is, it is excellent in workability. On the other hand, since the configuration of the stopper 20 that locks the battery 2 is not visible from the outside, battery replacement by a general user can be prevented. Therefore, it is possible to prevent the general user from removing the battery 2 and newly installing a battery other than the designated one by mistake.

  Further, since a normal cylindrical button battery or coin-type battery can be used instead of a terminal, the battery space as the accommodating portion 15 can be reduced, and the module can be downsized. , Can reduce the cost.

(Second Embodiment)
FIG. 10 is a cross-sectional view of the battery-type wristwatch 3 according to the second embodiment. The battery-type wristwatch 3 includes a secondary coil 30 for electromagnetic induction instead of the battery support portion 14. That is, the accommodating portion 15 is formed by the secondary coil 30. The secondary coil 30 is arranged in a ring shape along the outer periphery of the substantially disc-shaped battery 2. The remaining configuration and operation of the battery-powered wristwatch 3 according to the second embodiment are the same as the configuration and operation of the battery-powered wristwatch 1 according to the first embodiment.

  Thus, in the battery-type wristwatch 3, since the secondary coil 30 is arranged in a ring shape along the periphery of the battery 2, it can be effectively used without wasting space. Thereby, the secondary coil 30 can be arrange | positioned, without enlarging a module. That is, the configuration of the electromagnetic induction charging method can be easily realized.

  As described above, the battery-type timepiece according to the present invention is useful for a battery-type timepiece that uses a battery having a plus face and a minus face as a power source.

DESCRIPTION OF SYMBOLS 1,3 Battery type wristwatch 2 Battery 10 Movement holder 11 Analog movement 13 Circuit board 14 Battery support part 15 Storage part 16 Negative terminal 17 Battery fixing plate 18 Contact part 20 Stopper 30 Secondary coil

Claims (4)

A battery-powered watch that uses a battery having a plus surface and a minus surface as a power source,
A housing portion having a bottom surface and a side surface, in which a battery is housed so as to be movable between a first position and a second position of the bottom surface through an opening at the top;
A battery fixing plate having a plus terminal that protrudes from the opening edge of the housing portion to the center of the opening and contacts the plus surface of the battery disposed at the first position and the second position;
A negative terminal that is provided on the bottom surface, contacts the negative surface of the battery, and biases the battery toward the opening;
Provided on the surface of the battery fixing plate facing the bottom surface, abuts on the positive surface of the battery disposed at the first position, and further moves to the second position when the battery moves to the second position. A battery-powered timepiece comprising: a stopper that abuts against a side surface of the arranged battery and fixes the battery in the second position.   The stopper protrudes in the direction of the bottom surface, is provided so as to be movable in the vertical direction of the housing portion, contacts the positive surface of the battery disposed at the first position, and is pushed up in the upper direction of the housing portion The battery-powered timepiece according to claim 1, further comprising a portion.   3. The battery-type timepiece according to claim 1, further comprising a plurality of abutting portions provided on the side surface of the housing portion and abutting against the battery disposed at the second position. The battery is a rechargeable secondary battery,
The battery-powered timepiece further comprising a secondary coil for electromagnetic induction that is disposed adjacent to a side surface of the housing portion and charges the secondary battery.

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