JP2006187126A - Dc adapter and electronic apparatus employing it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent incorrect insertion of a DC adapter and to prevent chattering when a primary battery or a secondary battery is inserted into a battery containing section. <P>SOLUTION: In the DC adapter 3 being connected with an AC/DC converter 35 and inserted into the battery containing section 20 of an electronic apparatus 1 in order to supply DC power thereto, a section 41 for guiding the DC adapter 3 to the insertion guide portion 57 in the battery containing section 20 when it is inserted with correct polarity but regulating insertion into the sidewall 58 of he battery containing section 20 on the inserting end side when it is inserted with reverse polarity is formed on the substantially cylindrical adapter body 31. The insertion regulating portion 41 is formed at a part of outer circumference to project angularly over the longitudinal direction of the adapter body 31. With regard to two sides 41a and 41b extending from a part of the outer circumference of the DC adapter 3 to define an insertion regulating section 41, central angle of an arc connecting the proximal ends on the adapter body 31 is less than 90°. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a DC adapter device for supplying DC power from the outside to an electronic device using a dry battery as a power source, and an electronic device using the DC adapter device.

  2. Description of the Related Art Conventionally, portable electronic devices are provided with a battery housing portion into which a primary battery or a secondary battery is inserted, and are driven by receiving power from the device body. Moreover, the secondary battery for electronic devices is recharged by being mounted on a dedicated charger and used repeatedly.

  In this type of electronic equipment, for example, an AA-type dry battery is used as a primary battery, and a battery storage unit for inserting two AA-type dry batteries is provided in consideration of power consumption and battery life of the electronic equipment. There is something to be done. In addition, since the secondary battery for the electronic device needs to be able to be stored in the battery storage unit, a set of two secondary batteries having the same shape as the AA size dry cell is arranged according to the internal shape of the battery storage unit. Some are formed as batteries.

  By the way, apart from the primary battery and the secondary battery, there has been proposed a DC adapter that is inserted into a battery housing part from an AC power source for household use via an AC / DC converter and supplies DC power to an electronic device. The DC adapter has a shape similar to that of the assembled battery in which the secondary batteries are arranged in two. When the electrodes are formed in the same manner as the primary battery and the secondary battery and stored in the battery storage part of the electronic device, The DC current is supplied to the electronic device by contacting with the electrode formed in the battery housing.

  Such a DC adapter eliminates the need for an AC / DC converter or a DC jack dedicated connector for the DC adapter in addition to the battery housing in the electronic device body, which contributes to downsizing of the electronic device body and reduction in the number of parts. it can.

  However, since the polarity of the electrode terminal formed on the DC adapter is determined in the same manner as the primary battery and the secondary battery, if the polarity is inserted into the battery housing part by mistake, the electronic device may not operate or the operational May cause damage. In addition, the shape of the DC adapter may be asymmetrical, and it may be possible to prevent erroneous insertion by forming a battery housing portion corresponding to the shape of the DC adapter. When a battery, a secondary battery, or an assembled battery in which a plurality of secondary batteries are arranged are inserted, it must be avoided that they are rattled. Furthermore, if the terminal on the battery housing side that is in contact with the electrode terminal of the DC adapter is common with the terminal for the primary battery or the secondary battery, the DC adapter is used when the DC adapter is used in equipment other than the compatible equipment. May be different from the operating voltage of the primary battery or the secondary battery, and the safety of the electronic device may not be ensured.

Japanese Patent Application No. 2004-148501

  Therefore, the present invention prevents erroneous insertion of the DC adapter, and can prevent rattling when a primary battery or a secondary battery is inserted into the battery housing, and can be inserted into equipment other than the compatible equipment. It is an object of the present invention to provide a DC adapter that can ensure safety in the event of failure and an electronic device using the DC adapter.

  In order to solve the above-described problem, a DC adapter according to the present invention is connected to an AC / DC converter, and is inserted into a battery storage unit of an electronic device to supply a DC power to the electronic device. When the DC adapter is correctly inserted into the adapter body formed in a substantially cylindrical shape, it is guided by the insertion guide portion in the battery housing portion, and when inserted in the reverse polarity, the insertion end side of the battery housing portion is inserted. An insertion restricting portion that is restricted from being inserted into the battery housing portion is formed on the side wall of the battery, and the insertion restricting portion is formed on a part of the outer periphery so as to protrude in a square shape in the longitudinal direction of the adapter body. The two sides extending from a part of the outer periphery and forming the insertion restricting portion are the centers of arcs connecting the base end portions on the adapter body. There is characterized in that it is less than 90 °.

  The electronic device according to the present invention is an electronic device comprising a battery housing portion into which a DC adapter for supplying DC power is connected and connected to a cylindrical primary battery or secondary battery or an AC / DC converter. According to the insertion restricting portion in which a part of the outer periphery of the DC adapter protrudes into a square shape, a part of the circular inner peripheral wall is cut out into a square shape, and the DC adapter has the polarity inserted correctly. Sometimes, the insertion guide portion for guiding the insertion of the DC adapter by being engaged with the insertion restriction portion is provided, and the two sides forming the insertion guide portion are proximal ends on the inner peripheral surfaces of the battery storage portions. When the center angle of the arc connecting the parts is less than 90 ° and the DC adapter is inserted with the polarity reversed, the insertion restricting part is applied to the side wall on the insertion end side of the battery housing part. It is to regulate the insertion of the DC adapter by being.

  According to such a DC adapter and an electronic device using the DC adapter, when the DC adapter is stored in the battery storage portion, the insertion guide portion formed in the same manner as the shape of the insertion restriction portion of the DC adapter is used. Guided and can be inserted smoothly. In addition, when the DC adapter is inserted into the battery housing portion with the polarity reversed, the insertion restricting portion is brought into contact with the side wall formed in the battery housing portion to prohibit insertion, thereby preventing erroneous insertion. be able to. In addition, even when an AA type dry cell or secondary battery is inserted into the battery storage unit 20, it can be partially supported by the inner peripheral wall up to the side surface on the insertion guide unit side. It is possible to prevent rattling in the notch direction.

  Hereinafter, a digital still camera to which a DC adapter and an electronic device according to the present invention are applied will be described in detail with reference to the drawings. A digital still camera 1 to which the present invention is applied has a camera body 11 as shown in FIGS. The camera body 11 is provided with a lens portion 12 formed of a lens barrel on one side of the front surface portion, and a grip portion 13 that bulges on the other side and is gripped by the user. . The camera body 11 is provided with a shutter button 14 on the upper surface on the grip 13 side.

  Inside the grip portion 13, a primary battery such as a dry battery 4 and a rechargeable battery such as a nickel hydride secondary battery 5 are housed alone, or a battery device 2 in which a plurality of batteries are arranged and integrated is housed. As shown in FIG. 3, a battery cover 15 for opening and closing the battery storage unit 20 is provided on the bottom surface on the side where the grip unit 13 is provided. A DC adapter 3 is attached to the battery storage unit 20 selectively with the primary battery, the secondary battery, or the battery device 2 and converts AC power into DC power and supplies it to the power circuit of the camera body 11. Accordingly, the camera body 11 is not provided with a connector, a switching circuit, a switch, or the like dedicated to a DC jack to which an external DC power supply is supplied, and is downsized. The battery storage unit 20 and the battery device 2 and the DC adapter 3 inserted into the battery storage unit 20 will be described in detail later.

  A mounting hole 16 is provided on the bottom surface of the camera body 11 so that a tripod or the like is attached adjacent to the battery lid 15. The attachment hole 16 is a hole to which an accessory such as a tripod is attached and a positioning projection formed on a mounting portion of the stand device is engaged when the accessory is attached to the stand device. Further, a jack portion 17 for making an electrical connection with the stand device is provided on the bottom surface portion of the camera body portion 11 on the side where the lens portion 12 is provided.

  Further, as shown in FIG. 1, a display unit 18 is provided on the back side of the camera body 11 in a region on the back side of the lens unit 12. The display unit 18 has a substantially rectangular shape, for example, and is formed of a display element such as an LCD (Liquid Crystal Display) or an organic EL display (Organic Electroluminescence Display). A finder unit 19 is provided above the display unit 18. An operation unit 10 including a plurality of operation buttons is provided on the back surface of the camera body 11 so as to be adjacent to the display unit 18. For example, the operation unit 10 can perform an operation of displaying the image data stored and stored in the internal memory on the display unit 18. Further, the operation unit 21 can set detailed settings of the digital still camera 1, for example, flash on / off.

  Here, the battery device 2 stored in the battery storage unit 20 will be described. In the digital still camera 1, for example, an AA dry battery or a secondary battery having the same shape as the AA dry battery is stored in the battery storage unit 20, and two secondary batteries having the same shape as the AA dry battery are arranged. The integrated battery device 2 can be used. For example, a nickel metal hydride secondary battery 21 is used as the secondary battery constituting the battery device 2. As shown in FIG. 4, the nickel metal hydride secondary battery 21 includes an electrode body including a negative electrode and a positive electrode and an electrolytic solution stored in a cylindrical battery can body 22, and a longitudinal direction of the battery can body 22. A positive electrode terminal portion is formed on one end side, and a negative electrode terminal portion is formed on the other end side. The electrode body housed in the battery can body 22 is wound with a negative electrode active material capable of reversibly absorbing / releasing hydrogen, a belt-shaped negative electrode material carrying a positive electrode active material, and a positive electrode material through a separator, The negative electrode lead and the positive electrode lead are respectively led out to form a negative electrode and a positive electrode. The battery can body 22 has a negative electrode lead welded to the bottom surface of the battery can body 22 and a positive electrode lead welded to the battery lid of the battery can body 22 so that the upper end has a positive electrode terminal portion 22a and the lower end has a negative electrode terminal portion 22b. It is formed as. The battery can body 22 is covered with an insulating sheet material or the like except for the positive terminal portion 22a and the negative terminal portion 22b.

  As shown in FIGS. 5A to 5G, 6, and 7, the battery device 2 includes two nickel metal hydride secondary batteries 21 in the direction perpendicular to the longitudinal direction of the battery can body 22. The terminal portion 22 a and the negative electrode terminal portion 22 b are disposed so as to face each other and are formed by being bonded via a separator 23. As shown in FIG. 8, the separator 23 to which the nickel metal hydride secondary battery 21 is bonded is formed between the separator plate 24 bonded along the longitudinal direction of the battery can body 22 and the adjacent battery can body 22. It has an engaging portion 25 that is provided in accordance with one of the recesses 2a and that engages with a lever switch 61 that is formed in a battery housing portion 20 to be described later. The battery can body 22 is bonded to both side surfaces of the separation plate 24 with an adhesive or the like. The two battery cans 22 bonded to the separation plate 24 have a protruding end of the positive electrode terminal portion 22a formed in a convex shape and an end surface of the negative electrode terminal portion 22b formed flat so as to have the same height. Glued.

  The separation plate 24 is formed of a plate-like body whose side surface is formed in an arc shape corresponding to the battery can body 22, and an engagement portion 25 is formed on the upper surface from the middle portion to one end portion in the longitudinal direction. The lower surface of the separation plate 24 is flattened so that the other concave portion 2b of the battery device 2 is formed in a groove shape in the longitudinal direction. A guide projection 53 formed in the battery storage unit 20 is engaged with the recess 2b.

  The engagement portion 25 formed in one of the recesses 2a of the battery device 2 is engaged with a lever switch 61 formed in the battery storage portion 20, so that the digital still camera 1 can identify the type of the battery device 2. It is for letting you. The engaging portion 25 is formed from the intermediate portion in the longitudinal direction of the separate plate 24 to the rear end side in the insertion direction. The engaging portion 25 is formed with an identification portion 26 for identifying the type of the battery device 2 on the end surface 25a on the front end side in the insertion direction, and formed on the battery lid 15 described later on the end surface 25b on the rear end side in the insertion direction. A protrusion 27 facing the support protrusion 28 is formed.

  As shown in FIGS. 8A to 8C, the identification unit 26 has, for example, a convex shape, a flat shape, or the like depending on the discharge capacity of the battery device 2 and the charge / discharge characteristics such as the charge voltage and the charge current. It is formed in a concave shape. When the battery device 2 is inserted into the battery storage unit 20, the identification unit 26 is engaged with a lever switch 61 provided on the movement locus of the engagement unit 25. At this time, since the pressing amount of the lever switch 61 varies depending on the shape of the identification unit 26, the digital still camera 1 determines the type of the inserted battery device 2 by detecting the difference in the pressing amount. Can do. Therefore, the digital still camera 1 can be optimally charged if, for example, the operation of the camera body 11 is invalidated when an incompatible battery device is inserted, or if the inserted battery device 2 can be rapidly charged. It can be charged at a speed.

  As shown in FIG. 7, the protrusion 27 provided on the rear end surface 25 b of the engaging portion 25 is provided at a position lower than the end surface of the battery can body 22. As shown in FIG. 9, the protrusion 27 is formed in the recess 2 a formed between the battery can bodies 22 by the support protrusion 28 provided on the battery cover 15 side when the battery cover 15 closes the battery housing 20. By facing it, it is opposed to the support protrusion 28 with a predetermined clearance. In this state, when the digital still camera 1 is dropped, the protrusion 27 and the support protrusion 28 of the battery lid 15 come into contact with each other before the nickel metal hydride secondary battery 21 comes into contact with the battery lid 15 at the time of a drop collision. Since the contact between the protrusion 27 and the support protrusion 28 is a point contact, even when the camera main body 11 is impacted by the fall of the digital still camera 1, the battery device 2 does not contact the battery device 2 as compared with the case where it hits by surface contact. The applied impact is reduced. Therefore, it is possible to prevent accidents such as the separator 23 and the battery can body 22 being displaced or separated.

  The support protrusions 28 provided on the battery lid 15 are arranged so that when two single batteries or secondary batteries are stored in the battery storage unit 20, the dry batteries or secondary batteries stored adjacent to each other are supported. By being inserted between them, a clearance can be provided, and a danger such as a short circuit can be avoided. In addition, the battery lid 15 is in contact with a positive electrode terminal portion 22a and a negative electrode terminal portion 22b provided on both ends of the support protrusion 28 on the end surface on the rear end side in the insertion direction of the dry battery, the secondary battery, or the battery device 2. The lid electrodes 29 and 30 are formed.

  Further, when the battery device 2 is inserted into the battery storage unit 20 with the polarity reversed, the engagement unit 25 comes into contact with a guide protrusion 53 formed in the battery storage unit 20. Accordingly, the battery device 2 is prevented from being erroneously inserted into the battery storage unit 20. The engaging portion 25 is provided in the recess 2 a of the battery device 2 and has a height that does not protrude beyond the outermost diameter of the battery can body 22.

  The battery device 2 as described above supplies DC power to the power supply circuit of the camera main body 11 when inserted into the battery storage unit 20. Also, when the digital still camera 1 is placed on a camera stand connected to a household AC power supply whose details are omitted while being stored in the battery storage unit 20, the AC power supply is converted into a DC power supply. Then, charging is performed by being supplied. The battery device 2 can also be charged by being attached to a charger 70 described later.

  In addition, the battery apparatus 2 can be comprised using arbitrary storage batteries, such as a lithium ion secondary battery, a nickel cadmium storage battery, and a lead storage battery besides using the nickel hydride secondary battery 21. FIG.

  Next, a description will be given of the DC adapter 3 that supplies the external DC power to the digital still camera 1 by being stored in the battery storage unit 20 and connected to a household AC power supply via an AC / DC converter. As shown in FIGS. 6, 10, and 11, the DC adapter 3 includes an adapter main body 31 and a connector 33 provided at the tip of a cable 32 extended from the adapter main body 31. It is used by being connected to an AC / DC converter 35 having an AC power plug 34.

The adapter main body 31 is provided with first and second cylindrical portions 37 and 38 adjacent to each other in the direction orthogonal to the longitudinal direction corresponding to each storage portion of the battery storage portion 20, and these first and second cylinders are provided. Between the portions 37 and 38, first and second groove portions 39 and 40 are formed on both surfaces along the longitudinal direction. An insertion restricting portion 41 is formed in the first cylindrical portion 37 in accordance with the insertion guide portion 57 formed in the first storage portion 51 of the battery storage portion 20. The insertion restricting portion 41 is for preventing the DC adapter 3 from being inserted into the battery housing portion 20 with the polarity reversed, and causes a part of the outer periphery of the first cylindrical portion 37 to protrude in a square shape. It is formed by. The insertion restricting portion 41 has a first restricting side 41 a and a second restricting side 41 b that are adjacent to each other through the apex of the insertion restricting portion 41, and the first and second restricting portions constituting the insertion restricting portion 41. As shown in FIG. 12A, the sides 41a and 41b are extended from the outer periphery of the first cylindrical portion 37 to form an angle of about 90 ° with each other. Further, the first and second regulating sides 41 a and 41 b are formed so that the central angle θ _{1 of the} arc connecting the base end portions on the outer periphery of the first cylindrical portion 37 is less than 90 °. In other words, the first restriction side 41a is extended to be inclined slightly outward from the tangential direction at the base end portion of the outer periphery of the first cylindrical portion 37, and the second restriction side 41b is The first cylindrical portion 37 extends in the tangential direction at the base end portion of the outer periphery, and the first and second regulating sides 41a and 41b form 90 ° with each other. The first, second restriction sides 41a, 41b are, assuming a circular arc connecting the base end portion on the outer periphery of the first cylindrical portion 37, the center angle theta ₁ of the arc is less than 90 °. Therefore, when the DC adapter 3 is stored in the first storage portion 51 of the battery storage portion 20, the DC adapter 3 is inserted into the insertion guide portion 57 formed in the first storage portion 51 in the same manner as the shape of the insertion restriction portion 41. Guided and can be inserted smoothly. Further, when the DC adapter 3 is inserted into the battery storage portion 20 with the first cylindrical portion 37 and the second cylindrical portion 38 being reversed to reverse the polarity, the insertion restriction portion 41 is stored in the battery storage portion. Insertion is prohibited by contact with the contact portion 58 formed in the portion 20. In addition, as shown in FIG. 12B, the insertion restricting side 41 has the third restricting side 41c and the fourth restricting side 41d both in the tangential direction at the different base end portions of the first cylindrical portion 37. Slightly extended outwardly of the first cylindrical portion 37 and formed so as to form 90 ° with each other, on the outer periphery of the first cylindrical portion 37 of the third and fourth regulating sides 41c and 41d Assuming an arc connecting the base ends, the center angle θ _{2 of the} arc may be formed to be less than 90 °.

  In addition, as for this insertion control part 41, the intersection of the 1st control side 41a and the 2nd control side 41b is chamfered in circular arc shape. Therefore, when inserted into the battery storage unit 20 described later, even if it slides on the insertion guide portion 57 formed in the battery storage unit 20, it does not interfere with each other, so that it can be slid smoothly. Generation of dust and the like due to movement can be prevented.

  The first cylindrical portion 37 is flattened with no electrode terminal portions provided on the front end surface and the rear end surface in the insertion direction.

  The second cylindrical portion 38 is formed with a cutout portion 43 that is cut out in a substantially semicircular cross section from a substantially middle portion in the longitudinal direction to a rear end face in the insertion direction. An end face 43a on the front side in the insertion direction of the cutout portion 43 is formed. Further, a cable 32 connected to the AC / DC converter 35 is extended. When the DC adapter 3 is stored in the battery storage unit 20, the cable 32 is led out of the camera body 11 through a lead-out hole 59 formed in the side surface of the camera body 11. A convex first electrode terminal portion 44 that is in contact with the second electrode 52 a provided in the battery housing portion 20 is formed at the front end portion in the insertion direction of the second cylindrical portion 38. The first electrode terminal portion 44 is a positive electrode.

  The first groove portion 39 provided between the first cylindrical portion 37 and the second cylindrical portion 38 is formed in the battery storage portion 20 when the DC adapter 3 is stored in the battery storage portion 20. The guide protrusion 53 is engaged, and smooth insertion / removal can be performed. The second groove portion 40 is formed with a second electrode terminal portion 45 that comes into contact with the third electrode 62 provided on the engagement protrusion 54 of the battery storage portion 20. The second electrode terminal portion 45 is a negative electrode. As described above, the DC adapter 3 is provided with the electrode terminal portion at the front end portion in the insertion direction of the first cylindrical portion 37 corresponding to the first electrode 51 a provided in the first storage portion 51 of the battery storage portion 20. First, by providing the second electrode terminal portion 45 in the second groove portion 40, the positive electrode terminal and the negative electrode terminal are provided at positions apart from the electrode arrangement of the dry battery, the secondary battery, or the battery device 2 described above. Therefore, danger such as short circuit is avoided and safety is ensured. Further, by providing the third electrode 62 at a position corresponding to the second electrode terminal portion 45 in the battery housing portion 20, the second electrode 52a and the third electrode 62 in the battery housing portion 20 are electrically connected. In this case, it can be determined on the digital still camera 1 side that the dedicated DC adapter 3 suitable for the digital still camera 1 is used. Therefore, it is possible to cause the digital still camera 1 to perform a special operation that can be performed only when the dedicated DC adapter 3 is used.

  The second electrode terminal portion 45 is formed at a height that does not protrude from the first and second cylindrical portions 37 and 38. That is, the second electrode terminal portion 45 is set lower than the outer peripheral surfaces of the first and second cylindrical portions 37 and 38 on the side where the second groove portion 40 is exposed. Therefore, the DC adapter 3 can avoid the risk of damaging the components and the like in the battery storage unit 20 by the second electrode terminal unit 45, the contamination of the second electrode terminal unit 45, and the short circuit. .

  Further, the DC adapter 3 has a third groove portion 46 that is continuous from the first groove portion 39 on the rear end surface in the insertion direction. When the DC adapter 3 is stored in the battery storage unit 20 and is closed by the battery lid 15, the support groove 28 provided on the battery lid 15 is fitted into the third groove 46.

  When such a DC adapter 3 is inserted into the battery storage unit 20, a positive first electrode terminal unit 44 formed at the front end of the second cylindrical unit 38 in the insertion direction is provided on the battery storage unit 20 side. Before making contact with the formed second electrode 52 a, the negative second electrode terminal portion 45 formed in the second groove portion 40 makes contact with the third electrode 62 formed on the engaging protrusion 54. Thus, since the negative electrode terminal contacts before the positive electrode terminal, stable power supply can be performed.

  Further, in the DC adapter 3, the first cylindrical portion 37 is flattened at the front end surface in the insertion direction, and the second cylinder is formed with the convex first electrode terminal portion 44 on the front end surface in the insertion direction. Compared to the portion 38, the battery device 2, the dry battery 4, or the secondary battery 5, the length is shorter in the longitudinal direction. Therefore, as shown in FIG. 13, when the battery is inserted into the battery housing portion 20, the load on the first cylindrical portion 37 by the support spring 51 b provided on the first electrode 51 a of the battery housing portion 20 is reduced. The spring pressure when closing the battery cover 15 after storing the DC adapter 3 is small, the closing operation by the battery cover 15 can be easily performed, and the operational feeling can be improved.

  Next, the primary battery or secondary battery that supplies drive power to the camera body 11 or the battery storage unit 20 in which the battery device 2 or the DC adapter 3 is stored will be described. As shown in FIG. 6, the battery storage unit 20 is formed on the bottom surface of the camera body 11, and the first and second storage units 51 and 52 into which various power supplies are inserted face outward. The battery lid 15 is closed by a battery lid 15 (not shown in FIG. 6). The first and second storage portions 51 and 52 are formed in a hollow cylindrical shape having a size suitable for storing, for example, AA batteries, and are provided side by side in a direction perpendicular to the longitudinal direction. In addition, the first storage unit 51 and the second storage unit 52 are continuous over the longitudinal direction, and the cylindrical body is disposed between the first storage unit 51 and the second storage unit 52 in the longitudinal direction. Depending on the recesses 2b and the first groove 39 formed between the cylindrical bodies of the primary battery, the secondary battery, the battery device 2 and the DC adapter 3 arranged in a direction orthogonal to the above, these various power supplies can be inserted and removed. A guide projection 53 that guides the projection, and an engagement projection 54 in which a lever switch 61 and a third electrode 62 described later are formed.

As shown in FIG. 14, the first storage portion 51 is formed with an insertion guide portion 57 that guides insertion of the DC adapter and prevents erroneous insertion at a part of the inner periphery. The insertion guide portion 57 is formed by cutting a part of the inner peripheral wall of the first storage portion 51 into a square shape. The insertion guide portion 57 includes a first guide side 57 a and a second guide side 57 b which are adjacent to each other via the apex of the insertion guide portion 57, and the first and second guide sides constituting the insertion guide portion 57. 57a and 57b are extended from the inner peripheral wall of the 1st accommodating part 51, and make the angle of about 90 degrees mutually. The first and second guide sides 57a, 57 b is, the center of the arc angle theta ₃ connecting the base end portion on the inner peripheral wall of the first housing portion 51 is formed below 90 °. That is, the first guide side 57a is inclined and extended slightly outward from the first storage portion 51 with respect to the tangential direction at the base end portion of the inner peripheral wall, and the second guide side 57b is the base end of the inner peripheral wall. The first and second guide sides 57a and 57b form 90 ° with respect to each other. The first, second guide sides 57a, 57 b is, assuming a circular arc connecting the base end portion on the inner peripheral wall, the center angle theta ₃ of the circular arc is less than 90 °. Accordingly, the first storage portion 51 has a notch angle of less than 90 ° in which the insertion guide portion 57 is formed. Therefore, as shown in FIG. 9, AA type dry batteries and secondary batteries are inserted. In this case, the inner peripheral wall can partially support the side surface on the insertion guide portion 57 side, and it is possible to prevent these from rattling in the notch direction of the insertion guide portion 57.

  In this insertion guide portion 57, the intersection of the first guide side 57a and the second guide side 57b is chamfered in an arc shape. Therefore, when the DC adapter 3 to be described later is inserted, even if the insertion restricting portion 41 formed on the DC adapter 3 does not interfere with each other, it can be slid smoothly, and dust caused by sliding Etc. can be prevented.

  Further, the second storage portion 52 is formed in a hollow cylindrical shape, and the insertion restricting portion 41 contacts when the DC adapter 3 is inserted with the polarity reversed by cutting out a part of the inner peripheral wall. Thus, a contact portion 58 that prevents insertion of the DC adapter 3 is formed. A lead-out hole 59 that guides the cord extended from the DC adapter 3 to the outside of the camera body 11 is formed in the vicinity of the contact portion 58. The lead-out hole 59 is closed by a flexible closing piece 60. One end of the closing piece 60 is attached to the camera body 11, and when the DC adapter 3 is inserted, the closing piece 60 is rotated in the direction of arrow A in FIG. 6 to open the outlet hole 59 and extend from the DC adapter 3. The cable 32 is discharged out of the camera body 11.

  The first storage 51 has a first electrode 51a on the bottom surface, and the second storage 52 has a second electrode 52a on the bottom. The first electrode 51 a and the second electrode 52 a are inserted into the various power sources when the battery device 2, the dry battery 4 or the secondary battery 5 are stored in the first and second storage portions 51 and 52. Support springs 51b and 52b are provided to support the electrode terminal portions formed on the end surfaces.

  Here, as described above, in the DC adapter 3, the first cylindrical portion 37 is formed shorter in the longitudinal direction than the second cylindrical portion 38, the battery device 2, the dry battery 4, or the secondary battery 5. . Therefore, as shown in FIG. 13, the support spring 51 b provided on the first electrode 51 a reduces the load on the first cylindrical portion 37, and therefore, when the battery cover 15 after the DC adapter 3 is stored is closed. Since the spring pressure is small and the battery lid 15 can be easily closed, the operational feeling is improved.

  Between these first and second storage portions 51 and 52, a guide projection 53 for guiding insertion and removal of various power sources is provided. The guide protrusion 53 is formed so as to protrude from the inner surface side of the battery storage portion 20 by connecting adjacent inner peripheral walls of the first and second storage portions 51 and 52. The guide protrusion 53 guides insertion / removal when various power sources such as a dry battery and a secondary battery are housed, and functions as a partition wall that isolates the housed dry battery and the secondary battery. Further, when the battery device 2 is housed, the guide protrusion 53 is engaged with the recess 2b of the battery device 2 to guide insertion / removal. Further, when the DC adapter 3 is housed, the guide protrusion 53 is engaged with the first groove 39 of the DC adapter 3 to be inserted and removed.

  Further, the guide protrusion 53 is stored with the battery device 2 reversed in polarity, and when the recessed portion 2a is engaged, the engaging portion 25 provided in the recessed portion 2a of the battery device 2 comes into contact with the battery protruding portion 53. Since insertion into 20 is regulated, erroneous insertion can be prevented.

  An engaging protrusion 54 in which a lever switch 61 and a third electrode 62 are formed is formed at a position facing the guide protrusion 53. Similarly to the guide protrusion 53, the engagement protrusion 54 is formed so as to protrude to the inner surface side of the battery storage portion 20 by the adjacent inner peripheral walls of the first and second storage portions 51 and 52 being continuous. ing. The engaging protrusion 54 is formed with a lever switch 61 and a third electrode 62 on the open end side of the first and second storage portions 51 and 52. The lever switch 61 discriminates the type of the battery device 2 inserted according to the shape of the identification portion 26 formed on the end surface of the engagement portion 25 by being in contact with the engagement portion 25 of the battery device 2. Further, the third electrode 62 is in contact with the second electrode terminal portion 45 provided in the DC adapter 3.

  The engagement protrusion 54 is formed in a hollow shape with an open end face of the battery storage unit 20 open, and as shown in FIG. 15, a lever switch 61 and a detection that is pressed by the lever switch 61 inside. A switch 64 and a biasing member 65 that biases the lever switch 61 to the open end side are provided.

  The lever switch 61 is inserted into the engagement protrusion 54 and is slid in the storage direction of the battery device 2, and the detection switch 64 is formed integrally with the insertion portion 66 and is detected according to the sliding amount of the insertion portion 66. And an operating portion 67 that presses and the pressing portion 68 that is pressed by the engaging portion 25 of the battery device 2 by protruding from one end of the insertion portion 66. The insertion portion 66 has a pressing portion 68 protruding from one end portion 66 a on the open end side of the engaging protrusion 54. The pressing portion 68 protrudes from the open end of the engaging protrusion 54 into the battery housing portion 20 from one end portion of the insertion portion 66, thereby facing the moving region of the engaging portion 25 of the battery device 2. Therefore, when the battery device 2 is stored in the battery storage unit 20, the lever switch 61 is slid to the back of the engagement projection 54 by the pressing unit 68 being pressed by the engagement unit 25. Further, the insertion portion 66 is always engaged by urging the other end portion opposite to the one end portion where the pressing portion 68 is formed to the urging member 65 disposed in the engagement protrusion 54. The protrusion 54 is urged toward the open end of the battery storage unit 20. Further, the operation part 67 is formed integrally with the insertion part 66, and is moved according to the slide of the insertion part 66. And the operation part 67 operates the detection switch 64 by pressing the detection switch 64 arrange | positioned on the movement area | region.

  The detection switch 64 includes a detection lever 64 a that determines the type of the battery device 2 in accordance with the amount of rotation, and the detection lever 64 a is arranged facing the moving area of the operation unit 67 of the lever switch 61. .

  When the battery device 2 is not housed in the battery housing portion 20, the lever switch 61 is urged by the urging member 65 so that the insertion portion 66 is on the open end side of the engagement protrusion 54. Has been slid. At this time, the operation part 67 formed integrally with the insertion part 66 is in a position where it does not contact the detection lever 64a of the detection switch 64.

  When the battery device 2 is stored in the battery storage unit 20, the lever switch 61 is engaged with the insertion unit 66 by the pressing unit 68 being pressed by the identification unit 26 formed on the front end surface 25 a of the engaging unit 25. Slide to the back of the protrusion 54. At this time, the lever switch 61 has a different slide amount depending on the shape of the identification unit 26. That is, the insertion portion 66 slides further into the engagement protrusion 54 when the identification portion 26 has a convex shape, and slides closer to the front than when the identification portion 26 has a flat shape. When 26 is concave, it slides further forward than when it is flat. Therefore, since the slide amount of the operation unit 67 varies depending on the slide amount of the insertion unit 66, the detection switch 64 pressed by the operation unit 67 also varies in the rotation amount of the detection lever 64a. And as above-mentioned, since the identification part 26 is formed in convex shape, flat shape, or concave shape according to the discharge capacity of the battery apparatus 2, charging / discharging characteristics, such as charging voltage and charging current, etc., Since the rotation amount of the detection lever 64a varies depending on the difference of the identification unit 26, the type of the inserted battery device 2 can be determined by detecting the rotation amount. An optimum operation such as charging can be performed according to the type of the battery device 2.

  Further, when the battery device 2 is taken out from the battery housing portion 20, the lever switch 61 that has been pressed by the engaging portion 25 is slid to the open end side of the engaging protrusion 54 by the urging member 65 of the insertion portion 66. The Therefore, the operation part 67 is slid to the open end side of the battery storage part 20 together with the insertion part 66, and the pressing to the detection switch 64 is released.

  In front of the lever switch 61, a third electrode 62 that is in contact with the second electrode terminal portion 45 provided in the DC adapter 3 is provided. The third electrode 62 is provided between the first storage part 51 and the second storage part 52 of the battery storage part 20, thereby forming the second electrode formed in the second groove part 40 of the DC adapter 3. It faces the moving area of the electrode terminal portion 45. When the DC adapter 3 is inserted into the battery storage unit 20, the third electrode 62 includes the first electrode terminal portion 44 formed in the second cylindrical portion 38 of the DC adapter 3 as the second storage unit. Prior to contact with the second electrode 52 a formed on 52, the contact with the second electrode terminal portion 45 is made. In addition, since the second electrode terminal portion 45 is formed as a negative electrode, the DC adapter 3 is brought into contact with the positive electrode after the negative electrode is contacted, and the power supply through the DC adapter 3 is stabilized. Can be done.

  The digital still camera 1 uses a dedicated DC adapter 3 suitable for the digital still camera 1 when the second electrode 52a and the third electrode 62 provided in the second storage section 52 are electrically connected. It can be discriminated on the digital still camera 1 side. Therefore, it is possible to cause the digital still camera 1 to perform a special operation that can be performed only when the dedicated DC adapter 3 is used.

  When such a digital still camera 1 is placed on a camera stand (not shown) connected to a home AC power source with the battery device 2 stored in the battery storage unit 20, the AC power source is The battery device 2 can be charged by being converted into a DC power source and supplied. The battery device 2 and the secondary battery 5 are also charged by being attached to a charger 70 shown below.

  The charger 70 is a dual-purpose charger that can charge the battery device 2 and the single secondary battery 5. As shown in FIG. 16, the charger 70 accommodates two batteries provided on the upper surface of the substantially bowl-shaped main body 71. A partition wall 73 for partitioning the battery housing portions 72, 72, side walls 74, 74 provided along the longitudinal direction on the outer side of the battery housing portions 72, 72, and a battery The electrode support part 75 which supports each electrode terminal provided in the apparatus 2 or the secondary battery 5 is provided.

  The battery storage 72 has a size suitable for storing the nickel hydride secondary battery 21 of the battery device 2 and the single secondary battery 5 formed in the same size as the size AA dry battery, and has a substantially circular cross section. It is formed in an arc shape. Two battery storage portions 72 are formed adjacent to each other in a direction perpendicular to the longitudinal direction, and the battery storage portions 72 are partitioned by a partition wall 73. Each battery housing 72 has a side wall 74 formed on the outer side. As shown in FIG. 17, the partition wall 73 and the side wall 74 are both formed in an arc shape continuously with the battery storage portion 72, and the nickel hydrogen 2 of the battery device 2 stored in the battery storage portion 72. It is formed lower than the position of the central axis of the secondary battery 21 or the single secondary battery 5. The side wall 74 is formed lower than the partition wall 73, and further, an inclined portion 76 that descends toward the side surface 71 a of the main body portion 71 is formed. Therefore, since the battery accommodating part 72 can easily hang the finger 82 from the side wall 74 on the lower surface of the accommodated battery device 2 or the secondary battery 5, it can be removed smoothly.

  Further, in the battery housing portion 72, electrode support portions 75 are formed on both end surfaces 72a and 72b in the longitudinal direction. The electrode support portion 75 includes first and second cutout portions 77 and 78 in which both end surfaces 72a and 72b of the battery storage portion 72 are cut out in a substantially rectangular shape. The second conductive plates 79 and 80 are formed by facing. The first conductive plate 79 supports the positive terminal of the battery device 2 or the secondary battery 5, and the first cutout portion 77 on which the first conductive plate 79 is faced has a substantially convex shape. A support wall 81 that supports the formed positive electrode terminal protrudes around the notch. The second conductive plate 80 supports the negative terminal of the battery device 2 or the secondary battery 5, and the second conductive plate 80 is inclined downward from the upper end portion of the second notch portion 78. At the same time, it is bent downward in the middle so as to project to the battery housing part 72 side. The electrode support portion 75 is adjacent to the battery device 2 in which the positive electrode terminal portion 22a and the negative electrode terminal portion 22b formed in the nickel metal hydride secondary battery 21 are disposed so as to face each other. The first notch 77 and the first conductive plate 79 of the battery housing part 72 and the second notch 78 and the second conductive plate 80 are formed so as to face each other. When the battery device 2 or the secondary battery 5 is accommodated in the battery accommodating portion 72, such an electrode supporting portion 75 supports the convex positive terminal by the support wall 81 provided in the first cutout portion 77. At the same time, the battery device 2 and the secondary battery 5 are held in the battery housing portion 72 by supporting the substantially flat negative electrode terminal by the second conductive plate 80 formed to protrude toward the battery housing portion 72.

  The battery device 2 and the secondary battery 5 are guided to be stored in the battery storage portion 72 by the partition wall 73 and the side wall 74 formed in an arc shape, and are provided between the battery storage portions 72 adjacent to each other. Storage by the wall 73 in an inclined state is prevented.

  Further, as shown in FIGS. 16 and 17, the battery device 2 has the positive terminal portion 22a facing the first cutout portion 77 and the first conductive plate 79, and the negative electrode terminal portion 22b is formed in the second cutout. When facing the portion 78 and the second conductive plate 80 side, the concave portion 2 b in which the engaging portion 25 is not formed faces the partition wall 73. Therefore, in the charger 70, the battery device 2 is stored in the battery storage portion 72 with the same polarity, so that the concave portion 2 b of the battery device 2 is engaged with the partition wall 73. On the other hand, when the battery device 2 tries to store the battery device 2 in the battery storage portion 72 with the polarity reversed, the concave portion 2a and the partition wall 73 are opposed to each other, so that the engagement formed in the concave portion 2a. The portion 25 and the partition wall 73 are in contact with each other to restrict the storage of the battery device 2 and prevent the battery device 2 from being erroneously inserted.

  Further, in the charger 70, when the secondary battery 5 is accommodated in the battery accommodating portion 72 with the same polarity, as described above, the convex positive terminal portion is formed around the first notch 77. Supported by the support wall 81. On the other hand, in the charger 70, when the secondary battery 5 is to be stored in the battery storage portion 72 with the polarity reversed, the second conductive plate 80 in which the convex positive terminal portion projects into the battery storage portion 72. Accordingly, the storage of the secondary battery 5 is restricted, and erroneous insertion of the secondary battery 5 can be prevented.

  The battery charger 70 includes a detection unit 83 that detects whether or not both of the two nickel metal hydride secondary batteries 21 are attached to the battery housing portion 72 when the battery device 2 is attached. When the battery device 2 is mounted in the battery storage unit 72, the charger 70 is controlled to perform charging suitable for the battery device 2. That is, the charger 70 is formed as a dual-purpose charger for the single secondary battery 5 and the battery device 2 in which a plurality of secondary batteries are combined. The secondary battery 5 has different charging characteristics and quality such as charging voltage and capacity for each manufacturer. On the other hand, the battery device 2 has many charging characteristics determined in advance, and the quality is stable. . Therefore, when the battery device 2 is mounted, the charger 70 can perform, for example, quick charging by selecting an optimal charging method from known charging characteristics, and the usability for the user is improved. Therefore, the charger 70 that charges the battery device 2 determines whether the battery device 2 is mounted or whether the single secondary battery 5 is mounted, and the two nickel metal hydrides of the battery device 2 are mounted. A detecting means 83 for detecting whether or not the secondary battery 21 is mounted in the battery housing portion 72 is provided. When all the nickel hydride secondary batteries 21 of the battery device 2 are mounted, the battery device is configured such that quick charging is performed. 2 is controlled to perform optimal charging.

  The detection means 83 determines which of the single secondary battery 5 and the battery device 2 is attached to the battery housing portion 72 and, when the battery device 2 is attached, a nickel metal hydride secondary battery. This is to detect that all 21 are mounted. When the single secondary battery 5 is attached, the charger 70 starts charging if it is attached to one of the battery storage portions 72, and when the battery device 2 is attached, all the batteries are charged. Charging starts when the storage unit 72 is attached.

  As such a detection means 83, for example, a protrusion that protrudes toward the concave portion 2b is provided in the separator 23 of the battery device 2, and an insertion port into which the protrusion is inserted is provided in the partition wall 73 of the charger 70. It is configured by providing a detection switch in the insertion slot. According to this detection means 83, when the battery device 2 has both the two nickel metal hydride secondary batteries 21 correctly stored in the battery storage portion 72, the recess 2b and the partition wall 73 are engaged. At the same time, the protrusion formed on the separator 23 is inserted into the insertion opening provided in the partition wall 73 and the detection switch is pressed. Thereby, it is possible to detect that the battery device 2 dedicated to the digital still camera 1 is attached to the charger 70 and that the two nickel metal hydride secondary batteries 21 are attached. On the other hand, when one or two single rechargeable batteries 5 are attached to the charger 70, no protrusion is inserted into the insertion port formed in the partition wall 73, so that the detection switch is not pressed. Therefore, the charger 70 can determine that the single secondary battery 5 is mounted.

  As the detection means 83, for example, an IC tag may be provided on the battery device 2, and a reading device for the IC tag may be attached to the charger 70 side. An IC tag is provided in each nickel hydride secondary battery 21, and an IC tag reading device is also provided in each battery storage portion 72. This detection means 83 can also detect that the battery device 2 dedicated to the digital still camera 1 is mounted and that both of the two nickel metal hydride secondary batteries 21 are mounted by reading the IC tag.

  If charging / discharging characteristic information such as the charging voltage and capacity of the battery device 2 is included in the IC tag and the charging / discharging characteristic information is read on the charger 70 side, whether or not rapid charging is possible on the charger 70 side. Etc., and the most suitable charging method for the attached battery device 2 can be selected.

  As described above, when the dedicated battery device 2 is mounted, the charger 70 performs quick charging or the like according to the charge / discharge characteristics, whereas it is determined that the single secondary battery 5 is mounted. In such a case, it is assumed that various types of secondary batteries with different rated voltage, capacity, quality, etc. will be installed. Or charge with capacity.

  As shown in FIG. 18A, the charger 70 is connected to the end of a power cable provided with an AC / DC converter connected to a household AC power source on one end surface of the main body 71 in the longitudinal direction. An inlet 84 is formed. Instead of providing the inlet 84, the charger 70 may include an AC / DC converter and may be provided with a plug 85 connected to a household AC power source as shown in FIG. Further, on the upper surface of the charger 70, a display unit 86 is formed outside the formation region of the battery storage unit 72 to display states such as charging start and charging end by turning on / off the light.

  In the charger 70, two battery storage portions 72 are provided, but three or more battery storage portions 72 may be provided. In this case, it can also correspond to a battery device configured by arranging three or more secondary batteries.

It is a perspective view showing a digital still camera to which the present invention is applied. It is a perspective view showing a digital still camera to which the present invention is applied. It is a bottom view showing a digital still camera to which the present invention is applied. It is sectional drawing which shows the inside of the nickel hydride secondary battery used for a battery apparatus. It is a figure shown in order to demonstrate a battery apparatus, (A) is a front view, (B) is a top view, (C) is a bottom view, (D) is a rear view, (E) is a right side view, (F ) Is a left side view, and (G) is a perspective view. It is a perspective view which shows the various power supplies accommodated in a battery accommodating part and a battery accommodating part. It is a disassembled perspective view of a battery apparatus. It is a perspective view which shows a separator. It is a perspective view which shows the battery cover which obstruct | occludes a battery accommodating part. It is a perspective view which shows DC adapter. It is a perspective view which shows a mode that a digital still camera is connected with a household power supply via DC adapter. It is a front view which shows DC adapter. It is a top view which shows DC adapter. It is a front view which shows a battery accommodating part. It is a perspective view which shows the inside of a battery accommodating part. It is a perspective view which shows a charger. It is sectional drawing which shows the charger with which the battery apparatus was mounted | worn. It is a side view which shows a charger.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Digital still camera, 2 Battery apparatus, 3 DC adapter, 4 Dry battery, 5 Secondary battery, 11 Camera body part, 15 Battery cover, 20 Battery storage part, 21 Nickel metal hydride secondary battery, 22 Battery can body, 23 Separator, 24 separate plate, 25 engaging portion, 26 identifying portion, 27 protrusion, 28 supporting protrusion, 29, 30 lid electrode, 31 adapter body, 37, 38 cylindrical portion, 39, 40 groove portion, 41 insertion restricting portion, 41a first 1 regulation side, 41b 2nd regulation side, 43 notch part, 44, 45 electrode terminal part, 46 groove part, 51, 52 storage part, 53 guide projection part, 54 engagement projection part, 57 insertion guide part, 57a First guide side, 52b Second guide side, 58 abutting portion, 59 outlet hole, 60 closing piece, 61 lever switch, 62 third electrode, 64 Detection switch, 65 urging member, 66 insertion portion, 67 operation portion, 68 pressing portion, 70 charger, 71 main body portion, 72 battery storage portion, 73 partition wall, 74 side wall, 75 electrode support portion, 83 detection means

Claims (12)

In a DC adapter that is connected to an AC / DC converter and is inserted into a battery housing of an electronic device and supplies a DC power to the electronic device.
When the DC adapter is correctly inserted into the adapter body formed in a substantially cylindrical shape, it is guided by the insertion guide portion in the battery housing portion, and when inserted in the reverse polarity, the insertion end side of the battery housing portion is inserted. An insertion restricting portion for restricting insertion into the battery storage portion is formed on the side wall of
The insertion restricting portion is formed to protrude in a rectangular shape over a part of the outer periphery of the adapter body in the longitudinal direction, and the two sides extending from the outer periphery of the DC adapter to form the insertion restricting portion are: A DC adapter characterized in that the center angle of an arc connecting the base end portions on each other of the adapter body is less than 90 °.   2. The DC adapter according to claim 1, wherein the apex of the insertion restricting portion is chamfered in an arc shape.   2. The adapter body according to claim 1, wherein a plurality of cylindrical bodies are arranged side by side in a direction perpendicular to the longitudinal direction, and electrode terminal portions are formed in the recesses between the cylindrical bodies. DC adapter.   The electrode terminal portion is a minus terminal, and when the adapter body is inserted into the battery housing portion, the electrode terminal portion is inserted into the battery housing portion before the plus terminal formed on the end surface on the insertion end side of the cylindrical body. The DC adapter according to claim 3, wherein the DC adapter is brought into contact with the formed negative electrode.   4. The DC adapter according to claim 3, wherein the electrode terminal portion is formed at a height that does not protrude from a line segment in contact with the plurality of cylindrical bodies.   The insertion restricting portion is formed by extending one of the adjacent first surface and the second surface formed to extend in a tangential direction of the base end portion on the adapter body. The DC adapter according to claim 1, wherein: In an electronic apparatus having a battery housing portion into which a DC adapter that supplies a DC power source connected to a cylindrical primary battery or secondary battery or an AC / DC converter is inserted,
In the battery housing part, a part of the circular inner peripheral wall is cut out in a square shape according to the insertion restricting part in which a part of the outer periphery of the DC adapter is formed to project into a square shape, and the DC adapter correctly inserts the polarity. The insertion guide portion for guiding the insertion of the DC adapter by engaging with the insertion restriction portion when
The two sides forming the insertion guide portion have a center angle of an arc connecting the base end portions on the inner peripheral surface of each battery storage portion being less than 90 °,
An electronic device that restricts insertion of the DC adapter when the DC adapter is inserted with the polarity reversed and the insertion restricting portion is applied to the side wall on the insertion end side of the battery storage portion. The battery storage unit stores a plurality of the primary batteries or secondary batteries, or a plurality of storage units that store an assembled battery in which a plurality of the secondary batteries are integrated in a direction orthogonal to the longitudinal direction, and
A first electrode formed on each bottom surface of the storage portion;
A plurality of cylindrical portions are arranged in a direction perpendicular to the longitudinal direction according to the storage portion, and a first electrode terminal portion is formed in any one of the cylindrical portions and a recess is formed between the cylindrical portions. A second electrode that is in contact with the second electrode terminal portion formed in the concave portion of the DC adapter,
The electronic device according to claim 7, wherein the second electrode is formed between the storage portions and faces the movement locus of the electrode terminal portion. The first electrode is a positive terminal, the second electrode is a negative terminal,
When the DC adapter is inserted into the battery housing portion, the second electrode has the second electrode before the first electrode comes into contact with the first electrode terminal portion formed on the cylindrical portion. The electronic device according to claim 8, wherein the electronic device is in contact with the electrode terminal portion of the electronic device. The first electrode terminal portion is a positive terminal formed in a convex shape, and the end surface on the insertion end side of the cylindrical portion where the first electrode terminal portion is not formed is lower than the first electrode terminal portion. A flat part is formed,
9. The electronic apparatus according to claim 8, wherein the housing portion supports the flat portion by an elastic member that supports a negative electrode of the primary battery or the secondary battery.   The insertion guide portion is formed by extending one of the first surface and the second surface notched in the square shape in a tangential direction of the base end portion on the inner periphery of the battery storage portion. 8. The electronic device according to claim 7, wherein   8. The electronic apparatus according to claim 7, wherein the apex of the insertion guide portion is chamfered in an arc shape.

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