JP2009175940A - Electronic pedometer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic pedometer with simple configurations suitable for the miniaturization of this device in which a battery exchange switch to be operated by the necessary act of a user is arranged, and the protection of the data of a memory in the case of exchanging a battery is surely achieved. <P>SOLUTION: A slide type battery cover 2 is mounted on a case 1 so as to be slidable between a first mounting position and a second mounting position while such a state that a button battery 5 is housed in a battery housing part 4 is maintained. The battery exchange switch is configured of fixed contacts formed of fixed contacts formed of a pair of connection pins 6 whose one ends are connected through a conductive coil spring 7 to a circuit board 3 on which a CPU is mounted and movable contacts arranged at a part of the internal face of the slide type battery cover 2, and formed of a non-conductive member 8b brought into contact with the other ends of the pair of connection pins 6 at the first mounting position and a conductive connection member 8a brought into contact with the other ends of the pair of connection pins at the second mounting position. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a structure of a battery exchange switch for protecting data in a memory when a battery of an electronic pedometer is exchanged.

  Conventional electronic pedometers are provided with various memories, but the stored contents of the memories are erased when the battery is replaced. As the pedometer functions improve, the amount of data stored in the memory increases, and products that can store walking data for the past several months have been commercialized. Electronic pedometers with such a high-capacity memory function However, it has been required to keep the stored contents even after battery replacement.

  Therefore, as a countermeasure for this requirement, a method of arranging a secondary battery or a capacitor in parallel with the battery, or a method of adopting a nonvolatile memory as a memory can be considered. However, in both of these methods, in the state immediately after the battery is removed, the capacity stored in the secondary battery, capacitor, etc. can be operated. There is a possibility that the operation will stop due to the lack of capacity and the stored contents of the memory will be destroyed. For this reason, in order to protect the data in the memory at the time of battery replacement, a battery replacement switch that generates a signal for causing the CPU of the electronic pedometer to recognize that the battery is in the battery replacement state is required.

  FIG. 4 of Japanese Utility Model Laid-Open Publication No. 1-142058 (Patent Document 1) is a battery replacement switch applied to a small electronic device having a battery lid that is screwed and attached to a case, and has an elastic conductive property. A contact and a protrusion formed on the back side of the battery cover. When the battery cover is closed, the protrusion pushes down the conductive contact to hold the contact potential at a low level, and the battery cover is opened. In this case, there is disclosed a battery exchange switch in which the conductive contact is released from the protrusion and is raised by its own elasticity to come into contact with the electrode terminal to switch the contact potential to a high level.

  FIG. 5 shows a battery exchange switch applied to a small electronic device having a rotating battery cover attached to a case so as to be rotatable by a hinge, and has an elastic conductive contact and a rotating battery. When the rotating battery cover is closed, the conductive contact is released from the side of the rotating battery cover and rises by its own elasticity to bring the contact potential to a low level. A battery exchange switch is disclosed that switches the contact potential to a high level by holding the slide-type battery lid when the side of the rotating battery lid pushes down the conductive contact to contact the electrode terminal when the slide-type battery lid is opened. Yes.

  Japanese Patent Application Laid-Open No. 5-225140 (Patent Document 2) discloses a battery exchange switch applied to a small electronic device having a slide-type battery lid, and a switching operation unit of a rectangular block body to which an elastic contact piece is fixed. There is disclosed a battery exchange switch comprising a board-side contact, wherein the switching operation unit is detachably integrated and fixed to the slide-type battery lid. In this battery exchange switch, the elastic contact piece is separated from the substrate side contact when the slide type battery lid is at the first attachment position, and the elastic contact piece is in contact with the substrate side contact when it is slid to the second attachment position. The switch is turned on. And between the 2nd attachment position and the 1st attachment position, the battery accommodated in the battery accommodating part is stably hold | maintained.

  In both cases, the battery replacement switch can be turned on and off by opening and closing the battery cover. However, since it has an elastic conductive piece as a contact point, the switch size increases, and the case and switch structure are designed. Therefore, it cannot be applied to an electronic pedometer, which is a more miniaturized electronic device. Further, in the battery replacement switch disclosed in Patent Document 1, before the battery replacement switch detects the opening of the slide-type battery lid, the battery may jump out of the battery storage unit and come out of the battery contact, and the switch may not operate normally. There is a problem that occurs.

Further, in the battery replacement switch disclosed in Patent Document 2, after the slide type battery cover is slid to the battery take-out position, the slide type battery cover is moved to the rectangular block body switching operation unit before the battery is taken out from the battery storage unit. Must be removed from. Further, in order to store a new battery in the battery storage unit and attach the slide type battery cover to the case, it is necessary to integrate the slide type battery cover with the switching operation unit of the rectangular block body. However, these operations are quite troublesome for the user. In addition, in order to detachably integrate the slide-type battery lid with the switching operation unit of the square block body, there is a problem in that the structure of each of the slide-type battery lid and the switching operation unit of the square block body has design restrictions. There is also. Therefore, the battery exchange switch disclosed in Patent Document 2 cannot be applied to an electronic pedometer, which is a smaller electronic device.
Japanese Utility Model Publication 1-142058 JP-A-5-225140

  The problems to be solved by the present invention include a battery replacement switch that is simple in structure, suitable for downsizing the apparatus, and operated by a user's inevitable action, and reliably protects memory data during battery replacement. It is to provide an electronic pedometer to be performed.

  In order to solve the above problems, in an electronic pedometer provided with a slide-type battery lid, a battery exchange switch has a fixed contact having a pair of connection pins arranged on a circuit board, and the tips of the pair of fixed contacts are A movable contact member that is short-circuited or opened is attached to a part of the inner surface of the slide-type battery lid.

  That is, an electronic pedometer that solves the above problem is a slide type battery that is slidable between a first attachment position and a second attachment position while being attached to a case while maintaining a state in which a button battery is housed in a battery housing portion. An electronic pedometer comprising a battery exchange switch that generates a first signal and a second signal when the lid and the sliding battery lid are in the first attachment position and the second attachment position, respectively, It comprises a pair of fixed contacts connected to the signal processing unit via a circuit pattern on the circuit board and a movable contact attached to the inner surface of the slide type battery lid, and the movable contact is formed by the slide type battery lid. The pair of fixed contacts are made non-conductive when in the first attachment position, and the pair of fixed contacts are in the non-conduction state when the slide battery lid is in the second attachment position. It is characterized in that for conducting a constant contact.

  According to the present invention, there is provided an electronic pedometer that includes a battery replacement switch that is operated by a user's inevitable action and that reliably protects memory data during battery replacement. Further, since the battery replacement switch according to the present invention has a very small and simple configuration, there is a manufacturing merit that it is not necessary to make a large shape change to the case or the battery lid.

  An electronic pedometer according to the present invention includes a slide-type battery lid that is slidable between a first mounting position and a second mounting position while maintaining a state in which a button battery is stored in a battery storage portion, An electronic pedometer provided with a battery exchange switch for generating a first signal and a second signal when the slide type battery lid is in the first attachment position and the second attachment position, respectively. A pair of fixed contacts connected to the signal processing unit via a circuit pattern and a movable contact attached to the inner surface of the slide-type battery lid, and the slide-type battery lid is attached to the first attachment The pair of fixed contacts are made non-conductive when in the position, and the pair of fixed contacts are guided when the slide-type battery cover is in the second mounting position. It is characterized in that to.

  An electronic pedometer to which the present invention is applied measures the number of steps by processing an output signal of an acceleration sensor (not shown) by a signal processing unit, stores the number of steps in a memory, and displays the accumulated number of steps and other data on a liquid crystal display unit It is something to be made. The signal processing unit is composed of an electronic component such as a CPU. Hereinafter, an electronic pedometer according to a first embodiment of the present invention will be described in detail with reference to FIGS.

  The electronic pedometer of the first embodiment has a pedometer case 1 in which a battery storage unit 4 is formed. The pedometer case 1 includes an upper case 1a and a lower case 1b. The pedometer case 1 houses and arranges a circuit board 3 on which electronic components such as a CPU are mounted and a liquid crystal display unit 9. The slide type battery lid 2 is a rectangular plate member in plan view, and one end thereof is curved in accordance with the shape of the lower case 1 b of the pedometer case 1. A minus battery terminal 11 is attached to the bottom surface of the battery housing portion 4, and a plus battery terminal 10 is attached to the inner surface of the slide type battery lid 2.

  A plurality of case engaging portions 2 a are formed on both side surfaces of the sliding battery lid 2 in the sliding direction. That is, as shown in FIGS. 1B, 3B, and 4B, three slide battery lids 2 are formed on the upper side surface and two are formed on the lower side surface. As shown in FIG. 2, the case engaging portion 2a has an L-shaped convex section.

  As shown in FIGS. 1B, 3B, and 4B, the lower case 1b formed with the battery housing portion 4 is slidable with the case engaging portion 2a of the slide type battery lid 2. A battery lid engaging portion 1c to be engaged is formed. As shown in FIG. 2, the battery lid engaging portion 1c has a recess or an opening in cross section.

  Since the lower case 1b in which the battery housing portion 4 is formed and the slide type battery lid 2 are configured as described above, the slide type battery lid is maintained while maintaining the state in which the button battery 5 is housed in the battery housing portion 2. 2 can slide planarly between the first mounting position of FIG. 3 and the first mounting position of FIG. In short, the planar slide of the slide-type battery lid 2 is performed on the case engaging portions 2a of the L-shaped convex portions on both side surfaces parallel to the sliding direction, and the battery housing portions corresponding to the case engaging portions 2a of the L-shaped convex portions. 4 is carried out by being guided by the battery lid engaging portion 1c of the concave portion formed on both side surfaces.

  A battery replacement switch, that is, a battery replacement switch that generates a signal for recognizing the CPU of the electronic pedometer to be in a battery replacement state, is attached to the circuit board 3 in order to protect memory data when the battery is replaced. It consists of a pair of fixed contacts and a movable contact attached to the slide type battery lid 2.

  The pair of fixed contacts includes a pair of connection pins 6. The pair of connection pins 6 are inserted into pin through holes 12 formed in a portion of the lower case 1 b covered with the slide type battery lid 2, and are electrically conductive elastic members whose one ends are electrically connected to the circuit board 3. That is, it is pressed to the opposite side of the circuit board 3 by the conductive coil spring 7. With such a configuration, one end of the pair of connection pins 6 is electrically connected to the circuit board 3 and the other end is a free end.

  On the other hand, the movable contact is composed of a conductive member 8 a and a non-conductive member 8 b disposed on the inner surface of the slide type battery lid 2. The conductive member 8a and the non-conductive member 8b are disposed, for example, in a region where a part of the battery plus terminal 10 attached to the inner surface of the slide-type battery lid 2 so as to cover the most part is removed. . That is, a shape of a part of the battery plus terminal 10 is determined by the distance at which the slide type battery lid 2 slides, that is, the distance between the first attachment position and the second attachment position, and the arrangement distance between the free ends of the pair of connection pins 6. Then, the inner surface of the battery lid 2 made of a nonconductive material is partially exposed. Therefore, the conductive member 8a and the nonconductive member 8b are simultaneously formed by attaching the thin plate conductive member 8a to a part of the exposed portion of the inner surface of the battery lid 2. The thin plate conductive member 8 a is a substantially rectangular conductive thin plate having an area corresponding to the arrangement interval of the pair of connection pins 6, and is preferably made of the same material as the battery plus terminal 10. The thin plate conductive member 8a is disposed at a position where the free ends of the pair of connection pins 6 face each other when the slide type battery lid 2 is in the second attachment position.

  When the movable contact is formed as described above, as is apparent from FIG. 1B, when the battery cover 2 is in the second attachment position, the free ends of the pair of connection pins 6 and the conductive member 8a are in contact with each other. Moreover, the battery plus terminal 10 is completely surrounded by the non-conductive member 8b. Therefore, the battery plus terminal 10 which is a conductive member functions as an electromagnetic shield for the battery exchange switch, and prevents external noise from entering the electronic pedometer via the pair of connection pins 6.

  Hereinafter, the battery replacement operation in the first embodiment of the present invention will be described. First, the state in which the slide type battery cover 2 is not attached to the first attachment position of the case 1 just by storing the battery 5 in the battery storage part 4 is as shown in FIG. In this state, the battery exchange switch is off because the pair of connection pins 6 that are the fixed contacts are not in contact with the conductive member 8a that is the movable contact. The battery negative terminal 11 is in contact with the negative electrode of the button battery 5, but the battery positive terminal 10 is separated from the positive electrode of the button battery 5. Therefore, the power supply of the electronic pedometer is off.

  Next, in the first attachment position of the slide type battery lid 2, the case engaging portions 2a of the L-shaped convex portions on both side surfaces thereof are replaced with the battery lid engaging portions 1c of the concave portions formed on both side surfaces of the battery housing portion 4. When engaged and attached to the case 1, the result is as shown in FIG. That is, the battery negative terminal 11 is in contact with the negative electrode of the button battery 5, and at the same time, the battery positive terminal 10 is in contact with the positive electrode of the button battery 5, and the power of the electronic pedometer is turned on. And since a pair of connecting pin 6 which is the fixed contact contacts the nonelectroconductive member 8b which is the movable contact, the battery exchange switch is not short-circuited and remains off.

  Subsequently, when the slide type battery lid 2 is slid from the first attachment position to the second attachment position and the battery lid is completely closed, the result is as shown in FIG. That is, the battery exchange switch is turned on when the pair of connection pins 6 that are the fixed contacts are brought into contact with the conductive member 8a that is the movable contact and short-circuited. In other words, at this time, the battery exchange switch generates the second signal. By the way, the pair of connection pins 6 are connected to the input terminal of the CPU of the signal processing unit via a circuit pattern (not shown) of the circuit board 3. Therefore, when the battery replacement switch is turned on, the CPU determines that the battery 5 is normally set, and switches the power supply in the standby state to the on state. As a result, the electronic pedometer becomes operable. In this way, the operation of the battery set is completed.

  Next, the operation for removing the battery is the operation from the state of FIG. 1 to the state of FIG. 4 through the state of FIG. That is, in the state of FIG. 1, the button battery 5 is stably stored in the battery storage unit 4, and the electronic pedometer is operable. The battery exchange switch is short-circuited by the pair of connection pins 6 that are the fixed contacts coming into contact with the conductive member 8a that is the movable contact.

  Here, when the slide type battery lid 2 is slid from the second attachment position to the first attachment position, the result is as shown in FIG. That is, the battery negative terminal 11 is in contact with the negative electrode of the button battery 5, and at the same time, the battery positive terminal 10 is in contact with the positive electrode of the button battery 5, and the power of the electronic pedometer is on. Then, in the process of sliding the battery replacement switch from the second attachment position to the first attachment position, the pair of connection pins 6 that are the fixed contacts are separated from the conductive member 8a that is the movable contact, and the non-conductive member 8b. To switch from on to off. In other words, the battery exchange switch has generated the first signal. Then, when this first signal is input, the CPU determines that the battery is to be removed, performs the necessary processing to protect the memory data until the battery replacement is completed, and simultaneously turns the power supply to the standby state. Switch to.

  After the necessary processing for battery replacement is completed, the slide type battery lid 2 is formed with the L-shaped convex case engaging portions 2a on both side surfaces of the battery storage unit 4 at the first mounting position. If the engagement of the recessed portion with the battery lid engaging portion 1c is released and removed from the case 1, the result is as shown in FIG. All that remains is to remove the button battery 5 from the battery housing 4.

It is the fragmentary sectional view (A) and the partial top view (B) of the electronic pedometer where the battery cover is attached to the second attachment position of the case. It is the fragmentary sectional view seen from the direction orthogonal to FIG. 1 of the electronic pedometer with a battery cover attached to the 2nd attachment position of a case. They are a partial sectional view (A) and a partial plan view (B) of an electronic pedometer in which the battery lid is attached to the first attachment position of the case. It is the fragmentary sectional view (A) and partial top view (B) of an electronic pedometer before a battery cover is attached to the 1st attachment position of a case.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 1a Upper case and 1b Lower case 1c Battery cover engaging part 2 Battery cover 2a Case engaging part 3 Circuit board 4 Battery accommodating part 5 Battery 6 Connection pin 7 Conductive coil spring 8 Plate-shaped movable contact member 8a Conductive member 8b Non-conductive member 9 Liquid crystal display 10 Battery positive terminal 11 Battery negative terminal

Claims (7)

The slide-type battery lid and the slide-type battery lid attached to the case are slidable between the first attachment position and the second attachment position while maintaining the state in which the button battery is accommodated in the battery compartment. An electronic pedometer provided with a battery exchange switch for generating a first signal and a second signal, respectively, when in a position and a second mounting position;
The battery exchange switch includes a pair of fixed contacts connected to the signal processing unit via a circuit pattern on a circuit board and a movable contact attached to the inner surface of the slide-type battery lid, and the movable contact is the slide When the battery cover is in the first mounting position, the pair of fixed contacts are non-conductive, and when the slide battery cover is in the second mounting position, the pair of fixed contacts are conductive. Electronic pedometer. The pair of fixed contacts includes a pair of connection pins having one ends connected to a circuit board, and the movable contact is disposed on a part of the inner surface of the slide-type battery lid, and the pair of fixed contacts is disposed at the first attachment position. The non-conductive member in contact with the other end of the connection pin and the conductive connection member in contact with the other end of the pair of connection pins at the second mounting position are provided. Electronic pedometer. The pair of connection pins are inserted into pin through holes formed in a portion of the case covered with the slide type battery lid, and the circuit is formed by a conductive elastic member having one end electrically connected to the circuit board. The electronic pedometer according to claim 2, wherein the electronic pedometer is pressed against the opposite side of the substrate. The conductive member is a single conductive thin plate disposed on the inner surface of the slide-type battery lid, and the non-conductive member is disposed on the inner surface of the slide-type battery lid so as to surround the conductive thin plate. The electronic pedometer according to claim 2, wherein the electronic pedometer is a non-conductive member. The conductive thin plate is a substantially rectangular conductive thin plate having a size corresponding to the arrangement interval of the pair of connection pins, and the non-conductive member includes the arrangement interval of the pair of connection pins and the first attachment position. The electronic pedometer according to claim 4, wherein the electronic pedometer has a shape and an area corresponding to the interval between the second mounting positions. A battery plus terminal plate that covers a large area is attached to the inner surface of the slide type battery lid, and the conductive thin plate on which the movable contact is arranged is a size corresponding to the arrangement interval of the pair of connection pins. The non-conductive member has a shape and an area corresponding to an interval between the pair of connection pins and an interval between the first attachment position and the second attachment position. The electronic pedometer according to claim 4, wherein the electronic pedometer is provided. The flat slide of the slide type battery lid is such that the slide type battery lid having L-shaped convex portions formed on both side surfaces parallel to the sliding direction is provided on both side surfaces of the battery housing portion corresponding to the L-shaped convex portions. The electronic pedometer according to claim 1, wherein the electronic pedometer is guided by the formed case recess.

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