JP2010129433A - Loading structure of cell - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent electric short circuit in a loading structure of a cell generated at loading of the cell. <P>SOLUTION: A first cell electrode piece 27 in contact with an outer periphery face (a cathode) of a button cell 2 and a second cell electrode piece 28 in contact with a bottom face (an anode) of the button cell 2 are mounted on a control substrate 7. An end part of the second electrode piece 28 has a notch 28a fitted at a center part, and end parts 30a, 30a of the second electrode parts 30, 30 pinching the notch 28a are slanted downward. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a battery loading structure formed in a disk shape such as a button-type battery or a coin-type battery.

As this type of battery loading structure, a battery having positive and negative electrodes on each of the bottom surface and the outer peripheral surface and formed in a disk shape, a housing in which a battery loading portion for loading the battery is provided, A first and second electrode piece that faces the battery loading portion and is in electrical contact with each of the outer peripheral surface and the bottom surface of the battery, and the battery is loaded by moving the bottom surface of the battery along the bottom surface of the housing. There are some that are loaded into the part (for example, see Patent Document 1).
JP 2004-134198 A (paragraphs [0030] to [0035], FIG. 1)

  In the conventional battery loading structure described above, when the battery is loaded into the battery loading portion, the battery electrode piece that comes into electrical contact with the bottom surface of the battery is inserted into the battery loading portion in an inclined state from above. However, there is a possibility that an electrical short circuit may occur due to contact with the outer peripheral surface of the battery at the same time.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a battery loading structure that prevents an electrical short circuit that occurs when a battery is loaded.

  In order to achieve this object, the present invention includes a battery formed into a disk shape in which each of a bottom surface and an outer peripheral surface forms an electrode, a housing in which a battery loading portion for loading the battery is provided, First and second electrode pieces that face the battery loading portion and are in electrical contact with the outer peripheral surface and the bottom surface of the battery, respectively, and moving the bottom surface of the battery along the bottom surface of the housing In the battery loading structure to be loaded in the battery loading portion, the second electrode piece extends in the battery moving direction, the end on the battery insertion direction side is inclined downward, and a notch is provided in the center portion. It is a thing.

  According to the present invention, even if the battery is inserted into the battery loading portion in an inclined state from above, the insertion end of the battery faces the notch, so that this notch delays contact with the battery, First, a sufficient distance can be ensured until the outer peripheral surface and the bottom surface of the battery simultaneously contact the first electrode piece. Therefore, it is possible to reliably prevent an electrical short circuit that has occurred when the battery is loaded as in the prior art.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view showing a human body communication transceiver to which a battery loading structure according to the present invention is applied, FIG. 2 is a plan view showing a state in which the upper case is removed, and FIG. 4 is a plan view of the control board for explaining the contact state with the battery electrode piece, FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 2 with the upper case attached, and FIG. FIG. 5B is a cross-sectional view taken along the line VV in a state where the upper case in FIG. 2 is attached.

  A human body communication transceiver generally indicated by reference numeral 1 in FIG. 1 includes a disk-shaped button battery 2, a battery holder 3 that holds the button battery 2, a lower case 4 formed of plastic forming a housing 6, and an upper case The case 5 is generally configured by a control board 7 attached to the lower case 4, a lower panel 8 attached to the bottom surface of the lower case 4, and an upper panel 9 attached to the upper surface of the upper case 5. .

  In FIG. 4, the outer peripheral surface 11 of the button battery 2 is a positive electrode, and the bottom surface 12 is a negative electrode. As shown in FIG. 1, the battery holder 3 includes a gripping portion 14 formed in a flat rectangular parallelepiped, a ring-shaped holding portion 15 that is integrally formed with the gripping portion 14 and surrounds the outer peripheral surface 11 of the button battery 2, The holding unit 15 includes a mounting unit 16 that protrudes integrally in the horizontal direction at the lower end of the holding unit 15 and mounts the periphery of the outer peripheral surface 11 of the button battery 2. The button battery 2 mounted on the mounting unit 16 A hole 17 facing the bottom surface 12 is provided.

  As shown in FIG. 1, the lower case 4 is formed in a flat plate shape, and is provided with a battery insertion port 20 formed with the upper case 5 at the end in the direction of arrow B, on both sides of the battery insertion port 20. Guide ribs 21 and 21 that face each other are erected. A battery loading section 22 for loading the button battery 2 inserted from the battery insertion slot 20 is provided at a position on the arrow A direction side with respect to the battery insertion slot 20 of the lower case 4, and corresponds to the battery loading section 22. The lower case 4 is provided with a hole 23 formed in a T shape in plan view. Reference numeral 24 denotes a plurality of engaging pieces erected on the periphery of the lower case 4, and provided with engaging holes 24 a for engaging engaging protrusions (not shown) of the upper case 5.

  A substantially square notch 26 is provided at the end of the control board 7 in the direction of arrow B, as shown in FIG. 3, and the notch 26 is loaded in the control board 7 as shown in FIG. It is attached to the lower case 4 so as to correspond to the portion 22. 27 is a first electrode piece as a positive electrode battery electrode piece attached to the control board 7 so that the contact portion 27a faces the battery loading portion 22, and a button with the contact portion 27a loaded in the battery loading portion 22 Electrical contact is made with the outer peripheral surface 11 of the battery 2.

  Reference numeral 28 denotes a second electrode piece as a negative electrode electrode piece having a base attached to the control board 7 and a free end extending toward the battery insertion port 20 (arrow B direction). A notch 28a is provided at the center of the end of each of the two ends, and a pair of second electrode portions 30 and 30 are formed with the notch 28a interposed therebetween. An end 30a on the arrow B direction side of the second electrode portion 30 is bent so as to incline downward in the drawing toward the arrow B direction, and the center of the second electrode portion 30 in the arrow AB direction is bent. The contact portion 30b that is bent in such a manner as to incline upward in the drawing in the direction of arrow A and is in electrical contact with the bottom surface 12 of the button battery 2 loaded in the battery loading portion 22 is formed in the portion.

  Reference numeral 31 denotes a third electrode piece as a contact piece located in the notch 28a and integrally projecting in the arrow B direction from the center of the second electrode piece 28 in the arrow AB direction. The third electrode piece 31 faces the hole 23 of the lower case 4 and comes into electrical contact with a later-described negative electrode antenna substrate 41 as shown in FIG. . In FIG. 2, reference numeral 33 denotes a fourth electrode piece attached to the control board 7 in the direction of arrow A, and faces a hole 38 (described later) of the upper case 5 to be in electrical contact with the positive electrode antenna board 42. Reference numeral 34 denotes a switch attached to the end of the control board 7 in the direction of arrow A, and the human body communication transceiver 1 is turned on and off by operating the control board 7 via the operation member 35.

  As shown in FIG. 1, the upper case 5 is integrally provided with an enclosure wall 37 in which an opening (battery insertion port 20) is formed in the direction of the arrow B, and the enclosure wall 37 includes the above-described lower case 4. An engagement protrusion (not shown) that engages with the engagement hole 24 a of the engagement piece 24 is provided. Reference numeral 38 denotes a hole provided in the upper case 5, and the above-described fourth electrode piece 33 faces in the hole 38. On the upper surface of the lower panel 8, a negative antenna substrate 41 formed of a film-like copper plate is attached. On the lower surface of the upper panel 9, a positive antenna substrate 42 formed of a film-like copper plate is attached. The negative electrode antenna substrate 41 and the positive electrode antenna substrate 42 face each other and are connected to the negative electrode or the positive electrode of the button battery 2 through the second electrode piece 28 or the first electrode piece 27. When electric power is supplied, an electric field is generated in the human body.

  In such a configuration, the battery insertion slot 20 is provided between the lower case 4 and the upper case 5 by mounting the control board 7 on the lower case 4 and mounting the upper case 5 on the lower case 4 to form the housing 6. A battery loading portion 22 communicated with the battery is formed. The upper panel 9 is adhered to the upper surface of the upper case 5 and the lower panel 8 is adhered to the lower surface of the lower case 4, and the holding portion 15 holding the button battery 2 of the battery holder 3 is inserted from the battery insertion slot 20 to load the battery. After loading in the part 22, the battery holder 3 is fastened by the screw 44.

  As described above, the third electrode piece 31 that is in electrical contact with the negative electrode antenna substrate 41 is formed integrally with the second electrode piece 28, so that the number of steps for attaching the third electrode piece 31 to the control board 7 is increased. Can be omitted, and the number of parts can be reduced.

  Further, when the button battery 2 is loaded into the battery loading portion 22, as shown in FIG. 4A, even if the button battery 2 is inclined, a notch 28a is formed at the end of the second electrode piece 28. Therefore, as shown in FIG. 3, the insertion end 2a of the button battery 2 first faces the notch 28a. For this reason, this notch 28a delays the contact with the button battery 2, so that the distance δ until the outer peripheral surface 11 and the bottom surface 12 of the button battery 2 first contact the first electrode portion 30 at the first time is sufficiently increased. Can be secured. Therefore, it is possible to prevent an electrical short circuit that has occurred when the button battery 2 is loaded.

  In addition, since the third electrode piece 31 is formed using the space in the notch 28a of the second electrode piece 28, it is easy to form the third electrode piece 31 and save space. it can.

It is a perspective view which decomposes | disassembles and shows the human body communication transmitter / receiver to which the battery loading structure which concerns on this invention is applied. It is a top view which shows the state which removed the upper case in the human body communication transceiver which applied the loading structure of the battery which concerns on this invention. FIG. 5 is a plan view of a control board for explaining a contact state between a battery and a battery electrode piece during loading in a human body communication transceiver to which the battery loading structure according to the present invention is applied. FIGS. 4A and 4B are cross-sectional views taken along the line IV-IV in FIG. 2 with the upper case attached, where FIG. 4A shows the start of battery loading, and FIG. FIG. 5 is a cross-sectional view taken along the line V-V with the upper case in FIG. 2 attached.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Human body communication transmitter / receiver, 2 ... Battery, 3 ... Battery holder, 4 ... Lower case, 5 ... Upper case, 6 ... Housing, 7 ... Control board, 8 ... Lower panel, 9 ... Upper panel, 11 ... Outer surface ( Positive electrode), 12 ... Bottom (negative electrode), 20 ... Battery insertion port, 22 ... Battery loading part, 27 ... First electrode piece (positive battery electrode piece), 28 ... Second electrode piece (negative electrode electrode piece) ), 28a ... notches, 31 ... third electrode piece (contact piece), 33 ... third electrode piece, 41 ... negative electrode antenna substrate, 42 ... positive electrode antenna substrate.

Claims (1)

A battery formed into a disk shape in which each of a bottom surface and an outer peripheral surface forms an electrode, a housing in which a battery loading portion for loading the battery is provided, and an outer peripheral surface and a bottom surface of the battery facing the battery loading portion A battery loading structure for loading the battery into the battery loading portion by moving the bottom surface of the battery along the bottom surface of the housing,
A battery loading structure, wherein the second electrode piece is extended in the moving direction of the battery, an end portion on the battery insertion direction side is inclined downward, and a notch is provided in the central portion.

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