JP5110822B2 - Electrode structure and electronic equipment - Google Patents

Description

  The present invention relates to an electrode structure and an electronic device.

  Some portable electronic devices such as mobile phones and electronic notebooks have a dry battery inside the device in order to supply power to the device. Generally, in a portable electronic device, in order to stably contact a battery electrode of a dry battery and a battery case electrode, the battery case electrode on the negative electrode side is configured by a coil spring. When the dry battery is inserted, the coil spring contracts and the repulsive force presses the dry battery against the positive electrode side. As a result, the battery electrode and the battery case electrode are in contact with each other so that energization is possible on both the positive and negative electrodes.

Here, in a small electronic device such as a portable device, the winding diameter of the coil spring is configured such that the winding diameter at one end is small and increases toward the other end. This is because when the dry battery is inserted, the coil spring contracts, and the coil spring having a small winding diameter enters inside the coil spring having a large winding diameter, so that the thickness of the contracted coil spring is reduced. In a portable electronic device, since the device is to be configured as small as possible, the shape of the coil spring is an essential configuration (see, for example, Patent Document 1).
JP-A-6-20668

  A negative electrode terminal of a conventional battery case is shown in FIG. Fig.9 (a) is the figure which looked at the battery electrode of the battery case of the conventional portable apparatus from the battery insertion port direction. FIG. 9B is a diagram in which a dry battery is set in the conventional battery case shown in FIG. The conventional coil spring 30 has a larger winding diameter on the end side of the battery case, and the winding diameter is smaller as it is closer to the battery side.

  FIG. 10 is a diagram showing an operation of inserting a dry battery into a battery case having a conventional battery electrode structure. FIG. 11 is a diagram of an example in which a dry battery is accidentally inserted into a battery case having a conventional battery electrode structure. As shown in FIG. 10, the conventional dry battery 11 is inserted in the direction of B so that the electrode of the coil spring 30 is brought into contact with the negative electrode of the dry battery 11, and then the positive electrode of the battery case 4 and the positive electrode of the dry battery 11 are inserted. The dry battery 11 is inserted in the direction of C so that the electrodes are brought into contact with each other. Here, at the time of the first operation, the dry battery 11 cannot be successfully inserted if the tip of the coil spring 30 is not in contact with the negative electrode of the dry battery 11.

  An object of the present invention is to provide an electrode structure in which the tip of a coil spring 30 is surely brought into contact with the negative electrode of the dry battery 11 and the dry battery 11 can be easily inserted, and a portable device having this electrode structure.

  As a first configuration for solving the above-mentioned problems, the present invention provides a battery case in which a dry battery can be inserted and removed in a direction perpendicular to the axis of the dry battery, and an end face in which the electrodes of the dry battery are opposed to each other in the battery case. A coil spring having one end fixed thereto and a battery insertion guide piece fixed to the other end of the coil spring, the other end of the coil spring penetrating substantially the center of the battery insertion guide piece. The battery insertion guide piece is bent so as to be in contact with the battery mounting surface of the battery insertion guide piece, and the battery insertion guide piece is gradually inclined toward the center of the battery case as it goes in the dry cell insertion direction at the dry cell insertion / removal side edge of the battery installation surface An electrode structure is provided.

  Further, as a second configuration for solving the above problem, in the first configuration, the battery insertion guide piece is a convex or concave battery insertion guide piece side rotation prevention portion for preventing rotation near the bottom surface of the battery case. The battery case provides an electrode structure having a concave or convex battery case side anti-rotation part that fits into the battery insertion guide one side anti-rotation part.

  Further, as a third configuration for solving the above problem, in the first configuration or the second configuration, the battery case is a convex battery case side that prevents the battery insertion guide from floating on the inner side surface. There is provided an electrode structure including a battery insertion guide side floating prevention portion having a floating prevention portion, wherein the battery insertion guide piece has a concave portion engaged with the battery case side floating prevention portion.

  Furthermore, as a fourth configuration for solving the above-described problem, in the first configuration to the third configuration, the battery insertion guide piece is molded with a coiled portion of the coil spring therein. An electrode structure is provided.

  Furthermore, as a fifth configuration for solving the above-described problem, in the first configuration to the fourth configuration, the battery insertion guide piece has a concave battery mounting surface recess at a substantially center of the battery mounting surface, An electrode comprising a bent portion of the other end of the coil spring is disposed at the center of the battery mounting surface recess, and the size of the battery mounting surface recess is larger than the positive electrode of the dry battery and smaller than the dry battery diameter. The depth of the battery mounting surface recess is smaller than the height of the positive battery mounting surface protrusion of the dry battery.

  Furthermore, as a sixth configuration for solving the above problem, an electrode structure in which the side surface of the battery mounting surface recess has an inclined surface in the battery insertion / removal direction in the first configuration to the fifth configuration. provide.

  As a seventh configuration for solving the above problem, a battery case in which a dry battery can be inserted and removed in a direction perpendicular to the axis of the dry battery, and one end on an end surface of the battery case where the electrodes of the dry battery are opposed to each other A fixed coil spring and a battery insertion guide piece fixed to the other end of the coil spring, and the battery insertion guide piece gradually moves toward the dry battery insertion side edge of the battery mounting surface in the dry battery insertion direction. An electrode structure is provided in which an inclined guide toward the center of the case is provided, and the battery insertion guide piece is formed of a conductive material.

  Furthermore, as an eighth configuration for solving the above-described problem, in the first configuration to the seventh configuration, the battery insertion guide piece is disposed on both the negative pole and the positive pole. Provide structure.

  Furthermore, as a ninth configuration for solving the above-described problem, an electronic apparatus having an electrode structure having the first configuration to the eighth configuration is provided.

  According to the electrode structure of the present invention, when the battery is inserted, the tip of the coil spring reliably comes into contact with the negative electrode of the dry battery, and the dry battery can be easily inserted into the battery case.

  The electrode structure of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of an electronic apparatus having an electrode structure according to the present invention. Fig.2 (a) is the front view which looked at the battery insertion guide piece concerning this invention from the battery insertion side. FIG.2 (b) is the top view which looked at the battery case electrode which has the electrode structure which concerns on this invention from the battery insertion direction. 3 is a cross-sectional view taken along the line AA in FIG.

  One end of the coil spring 3 having a large winding diameter is fixed to the battery case 4, and the battery insertion guide piece 1 is fixed to the other end. In the present embodiment, the coil spring 3 is fixed by a coil spring clamp 5 disposed in the vicinity of the electrode of the battery case 4 so as not to be displaced in the battery axial direction. The method of fixing the coil spring 3 to the battery case 4 is not limited to this, and for example, a structure having hook-like claws paired with the end of the battery case to lock the coil spring 3 is also possible. .

  The tip of the coil spring 3 on the smaller winding diameter side is fixed to the battery insertion guide piece 1. The coil spring 3 penetrates substantially the center portion of the battery insertion guide piece 1 from the battery electrode side to the battery insertion side, and the distal end portion thereof is bent and fixed. In the embodiment of FIG. 1, the tip of the coil spring 3 is bent at a substantially right angle at one location, but a plurality of locations may be bent. Further, the battery insertion guide piece 1 may be bent along a curve on the battery mounting surface 9. Further, a groove may be formed on the battery insertion surface of the battery insertion guide piece, and the tip of the coil spring 3 may be bent so as to be fitted into this groove.

  The battery insertion guide piece 1 is provided with an inclined guide that gradually goes toward the center of the battery case as it goes in the dry battery insertion direction at the edge of the battery mounting surface on the dry battery insertion / removal side. The guide inclined surface 8 may be a straight line or a curved surface. Further, in the embodiment shown in FIG. 3, the battery insertion guide piece 1 has an inclined surface on the right-angled outer surface of the L-shaped battery insertion guide piece. However, the battery insertion guide piece 1 has a thick plate shape having substantially no L-shape. The slope portion can also be configured by forming the side surface of the battery insertion guide piece 1 into a slope shape.

  The coil spring 3 penetrates substantially the center of the battery insertion guide piece 1. As shown in FIG. 2 (b), not only the straight end portion of the coil spring 3 but also an elastic portion curved so as to spread radially outward from the straight end portion of the coil spring 3 is formed in the battery insertion guide piece 1. This can be formed by integrally molding with the coil spring 3 when the battery insertion guide piece 1 is molded.

  With the above structure, according to the electrode structure of the present invention, when the dry battery 11 is inserted, the guide inclined surface 8 of the battery insertion guide piece 1 abuts on and is pressed against the battery electrode of the dry battery 11, so that the battery case electrode Move in plane 6 direction. After the battery is mounted, the battery mounting surface electrode 2 on the battery mounting surface 9 of the battery insertion guide piece 1 is connected to the dry battery 11.

  FIG. 4 is a diagram of a battery case 4 in which the battery insertion guide piece 1 of the present invention is used for the positive electrode and the negative electrode. When both the positive electrode and the negative electrode have the electrode configuration of the present invention, the dry battery 11 can be inserted into the battery case 4 by the operation shown in FIG. That is, in the prior art, first, the dry cell 11 is inserted in the direction B in order to bring the battery electrode into contact with the tip of the spring coil 30, and then the dry cell 11 is moved in the direction C and attached to the battery case 4. As described above, in the electrode having the conventional electrode structure, the two-stage operation is necessary for mounting the dry battery 11. However, when the dry battery 11 is inserted into the battery case 4 having the electrode structure according to the present invention, as shown in FIG. 4A without being aware of the contact of the battery electrode with the battery insertion guide piece. The battery can be inserted in one operation.

  Further, when both the positive electrode and the negative electrode of the battery case 4 have the electrode structure of the present invention as described above, even if one coil spring 3 contracts due to an impact such as dropping, the coil of the other electrode The spring 3 can extend following it. For this reason, the battery electrode 12 and the battery mounting surface electrode 2 are not separated until such an impact that can be followed. That is, if both the electrodes have the structure of the present invention, an electronic device that is less likely to be momentarily interrupted by an impact can be configured. As the coil spring 3, two coil springs 3 having a positive pole and a negative pole, which have different winding diameters and elasticity, can be used.

  FIG. 5 shows a first modification of the battery insertion guide piece according to the present invention. The battery insertion guide piece 1 has a battery insertion guide piece convex portion 15 in the vicinity of the battery case 4, and the battery case 4 has a battery case concave portion 16 to be fitted therewith. In FIG. 4, the battery insertion guide piece 1 has a convex portion and the battery case 4 has a concave portion, but the battery insertion guide piece 1 may have a concave portion and the battery case 4 may have a convex portion. This fitting portion serves as a guide when the battery insertion guide piece 1 advances and retreats in the battery axial direction, so that the battery insertion guide piece can smoothly advance and retreat without rotating during battery insertion.

  FIG. 6 shows a second modification of the battery insertion guide piece 1 according to the present invention. The battery case side protrusion 17 disposed on the inner side surface of the battery case 4 extends in parallel with the axial direction of the battery case 4. The battery insertion guide piece 1 has a battery insertion guide piece side recess 18 so as to engage with the battery case side projection 17. As shown in FIG. 6, the battery insertion guide piece side surface recess 18 engages so as to enter under the battery case side surface protrusion 17. For this reason, according to the second modification, the battery insertion guide piece 1 does not float in the battery insertion direction. Therefore, when the dry cell 11 is inserted, the battery insertion guide piece 1 can smoothly advance and retreat along the axial direction of the battery case by the battery insertion guide piece side surface concave portion 18 and the battery case side surface convex portion 17.

  Furthermore, in this second modification, when the battery case 4 is formed of a material having some elasticity such as resin, the battery insertion guide piece 1 is inserted from the battery insertion direction when assembling the electrode structure of the present invention. And can be fitted into the state described in FIG.

  FIG. 7 shows a third modification of the battery insertion guide piece 1 according to the present invention, which is a modification of the embodiment when the present invention is used on the positive electrode side. FIG. 7A is a diagram when the positive electrode of the dry battery 11 is brought into contact with the battery insertion guide piece 1 in the present modification. FIG. 7B is a diagram when the negative electrode of the dry battery 11 is brought into contact with the battery insertion guide piece 1 in the present modification.

  The substantially central portion of the battery insertion guide piece 1 has a recess (battery mounting surface recess 20), and the tip of the coil spring 3 is fixed in the battery mounting surface recess 20. The diameter of the battery mounting surface recess 20 is larger than the diameter of the plus electrode of the dry battery 11 and smaller than the diameter of the minus electrode. Further, the depth of the battery mounting surface recess 20 is configured to be smaller than the protruding length of the electrode of the dry battery 11.

  Therefore, when the positive electrode of the dry battery 11 is brought into contact with the electrode, the protruding portion of the positive electrode of the dry battery 11 enters the battery mounting surface concave portion 20 and can conduct with the coil spring 3 of the positive electrode (FIG. 7 (a)). However, when the negative electrode of the dry battery 11 is brought into contact with the electrode, since the diameter of the battery mounting recess 20 is smaller than the negative pole, the negative electrode of the dry battery 11 cannot enter the battery mounting recess 20. . Since the tip of the coil spring 3 is formed at the bottom of the battery mounting surface recess 20, the battery insertion guide piece and the negative electrode of the dry battery do not contact each other. Therefore, in the electronic apparatus having this configuration, even if the positive electrode and the negative electrode of the dry battery 11 are inserted in reverse, no reverse current flows in the circuit.

  Further, it is also effective that the side surface (battery mounting surface recess side surface 21) of the battery mounting surface recess 20 in the direction of the battery insertion surface 7 is inclined toward the battery insertion surface 7. Thereby, when the dry battery 11 inserted in the battery insertion guide piece 1 according to the present modification is pulled out, the positive electrode of the dry battery 11 can be pulled out while pushing the battery mounting surface recess side surface 21.

  FIG. 8 shows a fourth modification of the battery insertion guide piece 1 according to the present invention. In this modification, a hole is formed in the substantially central portion of the battery insertion guide piece 1 (battery insertion guide piece central hole 22). The coil spring 3 passes through the battery insertion guide piece central hole 22 from the battery case electrode surface side to the battery mounting surface side. The winding diameter of the coil spring 3 which penetrates is formed with a diameter smaller than the diameter of the hole and has a coil shape. Therefore, only this portion has elasticity.

  The surface of the battery insertion guide piece 1 on the battery case electrode surface 6 side can be configured by a claw or the like that locks the coil spring 3. The battery insertion guide piece 1 is configured by engaging the coil insertion guide piece 1 with a coil spring 3 having a diameter larger than the diameter of the battery insertion guide piece central hole 22.

  The diameter of the battery insertion guide piece central hole 22 is larger than the diameter of the plus electrode of the dry battery 11 and smaller than the diameter of the minus electrode. Further, the difference in height between the battery mounting surface 9 and the tip of the coil spring 3 is configured to be smaller than the protruding length of the electrode of the dry battery 11. As a result, as in the third modification, even if the positive electrode and the negative electrode of the dry battery 11 are inserted in reverse, no reverse current flows in the circuit.

  As a fifth modification of the present invention, the battery insertion guide piece 1 is formed of a conductor. This conductor can be formed of a conductive resin or a metal plate mixed with a conductive substance. In the case of this modification, even if the coil spring 3 is not in contact with the battery electrode, electricity can be supplied as long as it is in contact with the conductive battery insertion guide piece 1. Therefore, the coil spring 3 does not need to appear on the battery mounting surface, and the coil spring 3 can be locked to the battery case 4 electrode of the electrode insertion guide 1.

It is a perspective view of the electronic device which has the battery electrode structure concerning this invention. It is the front view which looked at the battery insertion guide piece fixed to the minus electrode of the present invention from the battery insertion side, and the top view seen from the battery insertion direction. It is AA sectional drawing of FIG. It is a figure of the battery case which used the battery insertion guide piece of this invention for the positive pole and the negative pole. It is a figure of the 1st modification of the battery insertion guide piece concerning this invention. It is a figure of the 2nd modification of the battery insertion guide piece concerning this invention. It is a figure of the 3rd modification of the battery insertion guide piece concerning this invention. It is a figure of the 4th modification of the battery insertion guide piece concerning this invention. It is a figure of the conventional battery electrode terminal. It is an operation | movement figure which inserts a battery in the battery case which has the conventional electrode.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Battery insertion guide piece 2 Battery mounting surface electrode 3 Coil spring 4 Battery case 5 Spring clamp 6 Battery case electrode surface 7 Battery insertion surface 8 Guide inclined surface 9 Battery mounting surface 10 Electronic device 11 Dry battery 15 Battery insertion guide piece convex part 16 Battery Case concave portion 17 Battery case side convex portion 18 Battery insertion guide one side concave portion 20 Battery mounting surface concave portion 21 Battery mounting surface concave side surface 22 Battery insertion guide piece central hole 30 Conventional coil spring

Claims (8)

A battery case that can be inserted and removed in the vertical direction of the axis of the dry battery;
A coil spring in which one end is fixed to an end face on which the electrode of the dry battery is opposed to the battery case;
A battery insertion guide piece fixed to the other end of the coil spring, and
The other end of the coil spring passes through a substantially central portion of the battery insertion guide piece and is bent so as to contact the battery mounting surface of the battery insertion guide piece.
The electrode structure characterized in that the battery insertion guide piece is provided with an inclined guide which gradually goes toward the center of the battery case as it goes in the dry battery insertion direction at the edge of the battery mounting surface on the dry battery insertion / removal side. The battery insertion guide piece has a convex or concave battery insertion guide piece side rotation prevention portion for preventing rotation near the bottom of the battery case,
2. The electrode structure according to claim 1, wherein the battery case has a concave or convex battery case-side anti-rotation portion that fits into the battery insertion guide one-side anti-rotation portion. The battery case has a convex battery case side anti-floating portion for preventing the battery insertion guide piece from floating on the inner side surface,
The battery insertion guide piece electrode structure according to claim 1 or 2 having a battery insertion guide piece side retaining part having a recess for engaging with the battery case side retaining part. The electrode structure according to any one of claims 1 to 3 , wherein the battery insertion guide piece is formed by having a coiled portion of the coil spring therein. The battery insertion guide piece has a concave battery mounting surface recess at substantially the center of the battery mounting surface, an electrode comprising a bent portion of the other end of the coil spring is disposed at the center of the battery mounting surface recess, and The size of the concave portion of the battery mounting surface is larger than the positive electrode of the dry cell and smaller than the diameter of the dry cell, and the depth of the concave portion of the battery mounting surface is smaller than the height of the convex portion of the battery mounting surface of the positive electrode of the dry cell. The electrode structure according to any one of claims 1 to 4.   The electrode structure according to claim 5, wherein a side surface of the battery mounting surface recess has an inclined surface in a battery insertion / removal direction. Electrode structure according to any one of claims 1 to 6, wherein the battery insertion guide pieces are arranged in both the negative electrode and the positive electrode. The electronic device which has an electrode of the electrode structure of any one of Claim 1 thru | or 7 .

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