JP2015135774A - Housing structure for electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a housing structure that is advantageous to miniaturization, in an electronic apparatus using a battery as a power supply.SOLUTION: A housing main body for an electronic apparatus is provided with a base plate 110b for electrically connecting a part contacted with at least one electrode of a battery 170 and a part contacted with a terminal connected with a power supply line of a circuit board 198 of the electronic apparatus, with an opening and closing part 110 that enables a user to exchange the battery 170 housed in a battery housing part 181 in an opened state, in a state where the opening and closing part 110 are closed.

Description

  The present invention relates to a housing structure of an electronic device, and more particularly to a housing structure useful for downsizing a battery-driven electronic device.

  Miniaturization is an important issue for electronic devices, especially portable electronic devices. Portable electronic devices are often battery-powered, but the size of the battery has not been reduced compared to the size of the circuit, and it is easy to reduce the size of the electronic device while securing the battery storage space. Not. In particular, in an electronic device that needs to use a standardized battery such as a dry battery, it is more difficult to reduce the size than an electronic device that uses a dedicated rechargeable battery.

  In a small electronic device driven by a dry battery (including a primary battery and a secondary battery), in addition to an electrode plate for energizing the circuit from the electrodes at both ends of the dry battery, the battery is lengthwise to ensure energization. A spring or the like that presses against is required. And, since it is necessary to support the electrode plate facing the pressing force of this spring or the like, when forming the electrode plate support member with resin, it must be formed thick in order to give strength, This has been a factor that hinders downsizing of electronic devices (Non-Patent Document 1).

"FM-180 Operation Manual", Fukuda Electronics Co., Ltd., page 1-3, 2006

  FIG. 5 is a diagram showing a housing structure of a Holter electrocardiograph as an example of a conventional small electronic device using a dry battery as a power source. (A), (b) is the side view and sectional drawing of the state which removed the battery cover, (c) is a figure for demonstrating the structure which concerns on the power supply from a battery.

  The Holter electrocardiograph 200 has a battery housing portion 180 that houses a battery 170 as a power source. The battery housing part 180 is covered with a detachable battery cover 160 that constitutes a part of the housing, and the battery 170 can be attached and detached by removing the battery cover 160.

  The battery housing portion 180 is provided with electrode plates 171 and 173 for taking out electricity from the positive electrode and the negative electrode present on both end surfaces (or two parallel electrode surfaces) in the height direction of the battery 170. The electrode plate 173 on the negative electrode side is connected to a coil spring 172 for stabilizing the contact between the electrode of the battery 170 and the electrode plates 171 and 173 and supporting the battery 170. The electrode plate 171 is connected to the cord 178, the electrode plate 173 is connected to the cord 176, and is connected to the circuit board through the connector 177.

  Since the electrode plates 171 and 173 themselves are thin metal plates, the electrode plates 171 and 173 are bent due to the repulsive force of the coil spring 172 and the force applied when the battery is mounted unless supported by other members. On the other hand, since the battery cover 160 is detachable and is removed when the battery 170 is attached and detached, the electrode plates 171 and 173 cannot be supported by the battery cover 160. Therefore, support members 174 and 175 for supporting the electrode plates 171 and 173 are provided.

  In order to stably take out electricity while holding the battery 170, it is necessary to use a coil spring 172 having a strong repulsive force, and a strong force is applied to the electrode plates 171 and 173. Accordingly, the support members 174 and 175 for supporting the electrode plates 171 and 173 are required to have rigidity and strength. In general, since the housing including the support members 174 and 175 is formed of resin, the support members 174 and 175 need to be formed thick. In addition, since the casing body is formed outside the support members 174 and 175, it is difficult to reduce the size of the casing in the height direction of the battery 170 (the left-right direction in FIG. 5).

  The present invention has been made in view of such a problem of the prior art, and an object of the present invention is to provide a housing structure that is advantageous for downsizing in an electronic device using a battery as a power source.

  An object of the present invention is to provide a housing structure for an electronic device that uses a battery as a power source. The housing body has a battery housing portion that houses the battery, and the battery housing portion is provided in the housing body and opened by the user. An opening / closing portion that enables replacement of the battery accommodated in the battery, and when the opening / closing portion is closed, the portion of the opening / closing portion that is in contact with at least one electrode of the battery and the power source of the circuit board of the electronic device Conductive means for electrically connecting a portion connected to the terminal connected to the supply line is achieved in the casing structure of the electronic device, which is provided in the opening / closing section.

  With such a configuration, according to the present invention, it is possible to provide a housing structure that is advantageous for downsizing in an electronic device using a battery as a power source.

1 is an external perspective view of a Holter electrocardiograph as an example of an electronic apparatus to which the present invention can be applied. It is a figure for demonstrating the housing structure of the Holter electrocardiograph which concerns on embodiment. It is a cross-sectional perspective view showing a more detailed configuration near the opening / closing part. It is a perspective view which shows the structure of the base plate and packing of an opening / closing part in detail. It is a figure for demonstrating the housing structure of the conventional Holter electrocardiograph.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. In the following, an embodiment in which the housing structure according to the present invention is applied to a Holter electrocardiograph will be described. However, the housing structure according to the present invention can be applied to any electronic device.

  FIG. 1 is an external perspective view of a Holter electrocardiograph as an example of an electronic apparatus to which the present invention can be applied. The Holter electrocardiograph 100 according to this embodiment is driven by a battery (hereinafter simply referred to as a battery) in which electrodes are present on two parallel surfaces such as both end faces in the height direction, typically a cylindrical battery, Record ECG data on a removable memory card. Therefore, the Holter electrocardiograph 100 has an opening / closing part 110 for exchanging the battery and the memory card. In addition, although a battery is accommodated in the battery accommodating part 181 in a housing | casing and shall use one battery in this embodiment, multiple pieces may be used. The battery may be a primary battery or a secondary battery.

  The opening / closing part 110 is a lid that is rotatably attached to one end of the opening / closing part 110 with respect to the shaft of the housing body by the bearing part 140, and can be opened and closed as indicated by an arrow A. The opening / closing part 110 is provided with an opening / closing lever 120 as a first locking mechanism and a locking lever 130 as a second locking mechanism.

  The opening / closing lever 120 is movable in the direction indicated by the arrow B between the locking position (first position) and the unlocking position (second position) shown in FIG. 1, and the opening / closing part 110 is closed. In the state, it is biased by a spring in the lock position direction. The opening / closing lever 120 keeps the opening / closing part 110 closed in the locked position. The opening / closing part 110 can be opened when the opening / closing lever 120 is in the unlocked position. When the opening / closing part 110 is in an open state, the battery accommodating part 181 and the memory card slot can be accessed, and the user replaces the battery 170 stored in the battery accommodating part 181 and the memory card attached to the memory card slot. can do.

  The lock lever 130 is movable in the direction indicated by the arrow C between a lock position (third position) and an unlock position (fourth position). When the lock lever 130 is in the lock position, the opening / closing lever 120 is configured to be inhibited from moving to the lock release position, and to move to the lock release position when the lock lever 130 is in the lock release position.

  FIG. 2 is a view for explaining the housing structure of the Holter electrocardiograph 100 of the present embodiment. (A) is an external side view seen from the side opposite to the opening / closing part 110, (b) is a cross-sectional view taken along line MM in (a), and (c) is a diagram for explaining a configuration related to power supply from the battery 170 It is.

  The Holter electrocardiograph 100 according to the present embodiment has a configuration in which the electrode plate support member that is necessary in the conventional configuration is not used, so that the housing in the height direction of the battery (the direction perpendicular to the electrode surface) can be obtained. Miniaturization is realized. In this embodiment, it succeeded in omitting the indication member of an electrode plate by improving the rigidity of the housing | casing which forms the battery accommodating part 181 and improving the support structure of an electrode plate.

  First, the Holter electrocardiograph 100 of the present embodiment has a configuration in which the battery 170 is inserted into the battery housing portion 181 in the height direction of the battery. As a result, most of the battery accommodating portion 181 can be formed integrally with the casing body. Therefore, it is possible to realize a strength sufficient to directly support the electrode plate (the electrode plate 193 (first electrode plate) in FIG. 2) on the bottom (or back) side of the battery housing portion 181 with the inner wall of the housing body. 5 is not necessary.

  Further, the other electrode plate (here, the positive electrode plate (second electrode plate)) is built in the substantially flat opening / closing part 110, whereby the support member 174 in FIG. 5 can be omitted. It was. Specifically, by using the base plate 110b, which is a metal plate used as the base material by the opening / closing part 110, as the electrode plate for the positive electrode and the wiring to the circuit board (the electrode plate 171 and the code 178 in FIG. 5). The support member 174 is unnecessary.

  FIGS. 3A and 3B are cross-sectional perspective views showing a configuration in the vicinity of the opening / closing part 110 in more detail. FIG. 3A shows a state where the opening / closing part is present, and FIG. 3B shows a state where the opening / closing part 110 is removed. 4A shows the state of the opening / closing portion 110 in FIG. 3 as viewed from the inside of the housing, and FIG. 4B shows the relationship between the base plate 110b and the packing 110c and the conduction path of the positive electrode. Hereinafter, the housing structure according to the present embodiment, particularly the structure relating to the conductive path from the battery to the circuit board, will be described in detail with reference to FIGS.

  The components on the negative electrode side provided in the battery housing part 181 are an electrode plate 193 and a coil spring 192 connected to the electrode plate 193, which are the same as the conventional configuration. However, as described above, the electrode plate 193 is directly supported on the inner wall of the housing body. The electrode plate 193 may be substantially supported by the inner wall of the housing body, and does not exclude a configuration in which another member exists between the electrode plate 193 and the inner wall of the housing body. The electrode plate 193 is connected to the negative electrode side of the power supply line of the circuit board 198 through the cord 196 and the connector 199.

  On the other hand, the conductive structure on the positive electrode side using the opening / closing part 110 is significantly different from the conventional one. In the present embodiment, the opening / closing part 110 covers a base plate 110b that is a plate-like base material (for example, a metal plate) made of a rigid conductive material, a cover 110a attached on the base plate 110b, and the base plate 110b. It is comprised from the formed packing 110c. In the internal space formed between the cover 110a and the base plate 110b, movable parts such as the opening / closing lever 120, the claw portion 121, and the lock lever 130, and springs are accommodated.

  The packing 110c is provided as necessary to prevent liquid or dust from entering from the outside through the periphery of the opening / closing part 110. In the present embodiment, the packing 110c is provided so as to cover the base plate 110b by insert molding a silicon resin for forming the packing 110c on the base plate 110b (see FIG. 4B).

  However, since the base plate 110b is used as a wiring for electrically connecting the positive electrode plate and the positive electrode side of the power supply line of the circuit board 198 and the positive electrode of the battery 170, the packing 110c is formed as shown in FIG. As shown in (b), the portion that contacts the positive electrode of the battery 170 facing the electrode plate 193 and the portion 1101 that contacts the terminal 1941 of the probe electrode 194 mounted on the circuit board 198 are not provided. Further, in this embodiment, the packing 110c is not provided in the portion facing the memory card slot 197, but this is not essential. Note that the packing 110c may not be formed so as to cover a part of the base plate 110b if the performance required for the packing 110c (such as dust prevention and liquid intrusion prevention) can be realized. Moreover, you may provide packing 110c by methods other than insert molding.

  The probe electrode 194 is provided to electrically connect the circuit board 198 and the base plate 110b. A spring is built in the terminal 1941 of the probe electrode 194 like a contact probe and biased in the direction of the opening / closing part 110 in order to make a reliable connection when the opening / closing part 110 is closed. Then, the stroke amount of the terminal 1941 and the arrangement of the probe electrode 194 are determined so that the terminal 1941 is pushed in the portion 1101 of the base plate 110b when the opening / closing part 110 is closed. The reason why three terminals 1941 are provided is to ensure connection.

  The opening / closing part 110 is provided with a claw part 121 (see FIGS. 3A and 4A). The claw portion 121 is a member that moves in the direction of arrow B (FIG. 1) together with the opening / closing lever 120. When the opening / closing portion 110 is closed, the tip portion of the claw portion 121 enters the groove 101 provided on the inner surface of the housing body. Thus, the closed state of the opening / closing part 110 is maintained (FIG. 3). The spring 122 urges the opening / closing lever 120 and the claw portion 121 in the reverse direction, allowing the claw portion 121 to move in the direction of arrow B independently of the opening / closing lever 120, and moving the claw portion 121 toward the groove 101. Energized. When the opening / closing part 110 is closed by the bias of the spring 122, the claw part 121 enters the groove 101 and holds the opening / closing part 110 in the closed state.

  When the opening / closing part 110 is closed, the coil spring 192 presses the battery 170 in the positive electrode direction (the opening / closing part 110 direction), and the positive electrode of the battery 170 contacts the base plate 110b. Further, the terminal 1941 of the probe electrode 194 is also pressed against the base plate 110b. As a result, the base plate 110b serving as a conducting means electrically conducts the positive electrode of the battery 170 and the terminal 1941 of the probe electrode 194. Thereby, the power supply line of the circuit board 198 is connected to the positive electrode and the negative electrode of the battery 170, and the circuit can be operated.

  As described above, according to the present embodiment, since the electrode plate is supported by the housing body and the opening / closing portion of the housing, it is possible to omit the electrode plate supporting member that has been conventionally required, It is possible to reduce the size of the casing in the height direction of the battery.

  In addition, since the base material originally provided in the opening / closing part is made of a conductive material and used as a conductive member for the electrode plate and circuit board, there is no need to use an electrode plate or wiring, thereby reducing the number of parts and costs Of course, it is also advantageous in reducing the size of the apparatus. In addition, it is not indispensable to divert the base material of the opening / closing part as a conductive member. For example, when the base material of the opening / closing part is formed of an insulator, a part facing the electrode plate 193 and a part in contact with the terminal 1941 are provided. A member (for example, a metal plate) that is electrically connected may be provided separately.

  In the case of a device using a plurality of batteries, the configuration described above can be applied as it is when the batteries are used in a line. On the other hand, when the batteries are connected in parallel, the above-described configuration may be extended to a plurality of rows. Those skilled in the art will readily understand that the above-described configuration can be easily expanded according to the arrangement and connection method of the batteries.

  In the above-described embodiment, the structure in which the negative electrode plate 193 is directly supported by the inner wall of the housing body has been described. However, since the housing can be downsized by adopting only the positive-side conductive structure, the configuration in which the negative electrode plate 193 is supported by the inner wall of the housing body is not essential to the present invention.

Claims (7)

A casing structure of an electronic device using a battery as a power source,
A housing body having a battery housing portion for housing a battery;
An opening / closing part provided on the housing body and allowing a user to replace the battery housed in the battery housing part in an open state;
In a state in which the opening / closing part is closed, the part of the opening / closing part that is in contact with at least one electrode of the battery and the part that is in contact with the terminal connected to the power supply line of the circuit board of the electronic device are electrically connected. A casing structure of an electronic device, wherein a conducting means is provided in the opening / closing part.   The conduction means electrically connects a portion of the opening / closing portion that faces the at least one electrode of the battery and a portion that contacts a terminal connected to a power supply line of a circuit board of the electronic device. The housing structure of an electronic device according to claim 1.   The case structure of the electronic device according to claim 1, wherein the battery has electrodes on two end faces in a length direction.   4. The casing structure of the electronic device according to claim 1, wherein the conduction unit is a base material made of a conductive material that constitutes the opening / closing part. 5.   5. The device according to claim 1, wherein the terminal is biased by a spring in the direction of the opening / closing portion, and is arranged so as to be pressed by the conduction means when the opening / closing portion is closed. The housing structure of the electronic device of Claim 1.   The battery accommodating portion is further provided with an electrode plate configured to contact an electrode of the battery that is not in contact with the conducting means so as to be supported by an inner wall of the housing body. The housing structure of the electronic device according to any one of claims 1 to 5.   The electronic device provided with the housing structure of the electronic device of any one of Claims 1 thru | or 6.