JP2004087314A - Button-type battery loading method, battery holder, control circuit and flexible printed circuit substrate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To load to a flexible printed circuit substrate 3 without soldering. <P>SOLUTION: One part of the flexible printed circuit substrate 3 is bent so that a positive electrode contact 7 is brought into contact with a positive electrode 19 of a button-type battery 17 and is electrically connected, and at the same time, a negative electrode contact 11 is brought into contact with a negative electrode 21 of the button-type battery 17 and is electrically connected. The button-type battery 17 is held together with one part of the flexible printed circuit substrate 3 by elastic force of a battery holder 5. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a button battery mounting method for mounting a button battery on a flexible printed circuit board, a battery holder used for mounting the button battery on the flexible printed circuit board, a control circuit, and a flexible printed circuit board.
[0002]
[Prior art]
In general, the following two methods are used to mount a button battery on a flexible printed circuit board.
[0003]
That is, first, there is a method (first method) in which a button cell battery with terminals is directly mounted on the flexible printed circuit board by soldering. Next, mounting the button battery on the printed circuit board by mounting the battery holder with terminals on the flexible printed circuit board by soldering, and then holding the button battery on the battery holder with terminals. (A second method).
[0004]
[Problems to be solved by the invention]
By the way, in any of the methods (the first method and the second method), when the button batteries (including the button batteries with terminals) are mounted on the flexible printed circuit board, solder is used. Since the solder usually contains lead, there is a problem that mounting the button battery increases the environmental load.
[0005]
In any of the above methods, since high heat is generated during soldering, when the heat resistance of the flexible printed circuit board is extremely low, the button battery is mounted (directly or indirectly). There is a problem that you can not.
[0006]
Furthermore, in the first method, even if the heat resistance of the flexible printed circuit board is sufficiently high, the battery characteristics of the button cell battery with terminals may be deteriorated due to high heat generated at the time of soldering. There's a problem.
[0007]
[Means for Solving the Problems]
In the invention according to claim 1, a button battery mounting method for mounting a button battery on a flexible printed circuit board having a positive electrode contact and a negative electrode contact,
Part of the flexible printed circuit board so that the positive contact contacts and electrically connects to the positive electrode of the button battery and the negative contact contacts and electrically connects to the negative electrode of the button battery. Bending,
The button battery is held by the battery holder together with the portion of the flexible printed circuit board by elastic force.
[0008]
In the invention according to claim 2, a battery holder used for mounting a button battery on a flexible printed circuit board having a positive electrode contact and a negative electrode contact,
Part of the flexible printed circuit board so that the positive contact contacts and electrically connects to the positive electrode of the button battery and the negative contact contacts and electrically connects to the negative electrode of the button battery. Under a bent state, a holder base capable of setting the button battery and the portion of the flexible printed circuit board,
A clip that is detachable from the holder base and that presses the button battery and the portion of the flexible printed circuit board toward the holder base by an elastic force;
It is characterized by comprising.
[0009]
According to the present invention, the contact for the positive electrode contacts and electrically connects to the positive electrode of the button battery, and the contact for the negative electrode contacts and electrically connects to the negative electrode of the button battery. Bending the portion of the flexible printed circuit board so as to connect to the flexible printed circuit board. Then, under this condition, the button battery and the part of the flexible printed circuit board are set on the holder base. Further, by locking the clip to the holder base, the clip presses the button battery and the portion of the flexible printed circuit board against the holder base side with an elastic force. Thereby, the button battery can be held by the battery holder so as to be sandwiched by the elastic force with the part of the flexible printed circuit board, and the button battery can be mounted on the flexible printed circuit board.
[0010]
According to the third aspect of the present invention, in addition to the specific features of the second aspect, the holder base has a projection for regulating a displacement of the set button battery. Features.
[0011]
According to the third aspect of the invention, in addition to the effect of the second aspect of the invention, the position of the button battery set by the projection is restricted. With this, the pressing action by the elastic force of the clip is also combined, so that the electrical connection between the positive electrode contact, the negative electrode contact, and the positive electrode and the negative electrode of the button battery can be stably maintained.
[0012]
In the invention according to claim 4, a flexible printed circuit board;
A battery holder mounted on the flexible printed circuit board and comprising the invention-specifying matter according to claim 2 or 3;
It is characterized by comprising.
[0013]
According to the fourth aspect of the present invention, the same operation as that of the second or third aspect of the invention is provided.
[0014]
In the invention according to claim 5, a positive electrode connecting portion having a positive electrode contact,
A negative electrode connecting portion having a negative electrode contact,
A connection portion for connecting the connection portion for the positive electrode and the connection portion for the negative electrode,
When the button battery is interposed between the positive electrode connecting portion and the negative electrode connecting portion by being bent with reference to the bending line of the connecting portion, the positive electrode contact contacts the positive electrode of the button battery, and And the negative electrode contact is configured to be in contact with and electrically connected to the negative electrode of the button battery.
[0015]
According to the invention specifying matter according to claim 5, the button part is interposed between the connection part for the positive electrode and the connection part for the negative electrode by bending the connection part with reference to the bending line, The positive electrode contact contacts and electrically connects to the positive electrode of the button battery, and the negative electrode contact contacts and electrically connects to the negative electrode of the button battery. Then, the button battery is held by a battery holder so as to be sandwiched together with a part of the flexible printed circuit board (the connection portion for the positive electrode, the connection portion for the negative electrode, and the connection portion). Install the battery.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0017]
FIG. 1 is a front view of a control circuit according to an embodiment of the present invention. FIG. 2 is a view of FIG. 1 as viewed from below, and FIG. 3 is a view taken along a line II in FIG. FIG. 4 is a rear view of the control circuit according to the embodiment of the present invention, and FIG. 5 is a developed view of the flexible printed circuit board according to the embodiment of the present invention.
[0018]
Here, “front” refers to the front in FIG. 1, the top in FIG. 2, the top in FIG. 2, the left in FIG. 3, the back in FIG. 4, and the “back” refers to the paper in FIG. , The bottom in FIG. 2, the right in FIG. 3, and the front in FIG.
[0019]
As shown in FIGS. 1 to 4, a control circuit 1 according to an embodiment of the present invention includes a flexible printed circuit board 3 (only an end is shown) and a battery mounted on the end of the flexible printed circuit board 3. And a holder 5.
[0020]
Further, as shown in FIG. 5, the flexible printed circuit board 3 according to the embodiment of the present invention includes a positive connection portion 9 having a positive contact 7 and a negative connection portion 13 having a negative contact 11. And a connecting portion 15 for connecting the connecting portion 9 for the positive electrode and the connecting portion 13 for the negative electrode. Here, when the button battery 17 is interposed between the positive electrode connecting portion 9 and the negative electrode connecting portion 13 by bending the connecting portion 15 with reference to the bent line 15L of the connecting portion 15, the positive electrode contact 7 becomes the positive electrode 19 of the button battery 17. The negative electrode contact 11 is configured to contact and electrically connect to the negative electrode 21 of the button battery 17. Note that a plurality of engagement holes 23 are formed in the positive electrode connecting portion 9 and the negative electrode connecting portion 11, respectively.
[0021]
As shown in FIGS. 1 to 4, the battery holder 5 according to the embodiment of the present invention is used for mounting the button battery 17 on the flexible printed circuit board 3, and includes a holder base 25 and a clip. 27, and the details of the configuration of the holder base 25 and the clip 27 are as follows.
[0022]
That is, the holder base 25 is configured such that the positive electrode contact 7 is in contact with and electrically connected to the positive electrode 19 of the button battery 17 and the negative electrode contact 11 is in contact with and is electrically connected to the negative electrode 21 of the button battery 17. The button battery 17 and the portions 9, 13, 15 of the flexible printed circuit board 3 are folded under a state in which a part of the flexible printed circuit board 3 (the connecting portion 9 for the positive electrode, the connecting portion 13 for the negative electrode, and the connecting portion 15) is bent. Can be set. Here, the holder base 25 is made of resin.
[0023]
A plurality of projections 29 are formed on the front side of the holder base 25 to restrict the displacement of the button battery 17 set on the holder base 25, and each projection 29 has a pin shape. Here, the plurality of protrusions 29 regulate the positional displacement of the button battery 17 and also engage the engaging holes 23 corresponding to the plurality of protrusions 29 to move the flexible printed circuit board 3 to a predetermined position of the holder base 25. It can be positioned. Instead of forming the protrusion 29 in a pin shape, the protrusion 29 may be formed in an appropriate shape such as an arc shape. Further, a locked concave portion 31 is formed at the rear central portion of the holder base 25.
[0024]
The clip 27 is disengageable (lockable and detachable) from the holder base 25, and has a first arm 33 and a second arm 35 in front and rear. Here, the clip is made of an elastically deformable metal. Further, in order to allow the clip 27 to be disengaged from the holder base 25, a stepped locking which can be locked by an elastic force to the locked concave portion 31 of the holder base 25 at the tip end side of the second arm 35. A bent portion 37 is formed.
[0025]
Further, at the center of the first arm 33, a pressing piece 39 for pressing the button battery 17 and the parts 9, 13, 15 of the flexible printed circuit board 3 toward the holder base 25 by an elastic force is formed. Although the holding piece 39 is defined by a U-shaped slit 41, the holding piece 39 can be formed independently of the slit 41, and the length, width, and the like of the holding piece 39 are appropriately changed. be able to. Further, instead of forming the pressing piece 39 integrally with the first arm 33, the pressing piece 39 may be externally fixed to the first arm 33.
[0026]
Next, a button battery mounting method for mounting the button battery 17 on the flexible printed circuit board 3 will be described including an operation.
[0027]
The flexible printed circuit board 3 is so arranged that the contact 7 for the positive electrode is in contact with and electrically connected to the positive electrode 19 of the button battery 17 and the contact 11 for the negative electrode is in contact with and electrically connected to the negative electrode 21 of the button battery 17. The parts 9, 13, 15 are bent. Then, under this state, the button battery 17 and the portions 9, 13, and 15 of the flexible printed circuit board 3 are placed at predetermined positions of the holder base 25 so that the engagement holes 23 corresponding to the plurality of projections 29 are engaged. set.
[0028]
After the button battery 17 and the portions 9, 13, and 15 of the flexible printed circuit board 3 are set, the locking bent portion 37 is locked in the locked concave portion 31 of the holder base 25 (from above in FIG. 3). Then, the button battery 17 and the portions 9, 13, and 15 of the flexible printed circuit board 3 are pressed against the holder base 25 by an elastic force by the pressing pieces 39 of the clip 27. As a result, the button battery 17 can be held by the battery holder 5 so as to be sandwiched by the elastic force together with the parts 9, 13, and 15 of the flexible printed circuit board 3, and the button battery 17 is mounted on the end of the flexible printed circuit board 3. can do. Here, since the displacement of the button battery 17 set by the plurality of projections 29 is regulated, the pressing action by the elastic force of the pressing piece 37 in the clip 27 is also combined, and the contact 7 for the positive electrode, the contact 11 for the negative electrode, and the button battery The electrically connected state of the positive electrode 19 and the negative electrode 21 can be stably maintained.
[0029]
As described above, according to the embodiment of the present invention, the button battery 17 is held by the battery holder 5 together with the portions 9, 13, and 15 of the flexible printed circuit board 3 by elastic force without using solder. Therefore, since it can be mounted on the flexible printed circuit board 3, it is possible to suppress an increase in environmental load due to the mounting of the button battery 17.
[0030]
For the same reason, regardless of whether the heat resistance of the flexible printed circuit board 3 is good or not, the button battery 17 can be mounted on the various flexible printed circuit boards 3 without deteriorating the battery characteristics of the button battery 17. The use range of the button battery 17 can be expanded.
[0031]
It should be noted that the present invention is not limited to the above-described embodiments of the present invention, and can be implemented in various other modes by making appropriate changes.
[0032]
【The invention's effect】
According to the invention as set forth in any one of claims 1 to 5, the button battery is resiliently combined with the portion of the flexible printed circuit board by the battery holder without using solder. Since it can be held so as to be sandwiched and mounted on the flexible printed circuit board, an increase in environmental load due to the mounting of the button battery can be suppressed.
[0033]
In addition, for the same reason, regardless of whether the heat resistance of the flexible printed circuit board is good or not, mounting the button battery on the various flexible printed circuit boards without deteriorating the battery characteristics of the button battery. The use range of the button battery can be expanded.
[Brief description of the drawings]
FIG. 1 is a front view of a control circuit according to an embodiment of the present invention.
FIG. 2 is a view of FIG. 1 as viewed from below.
FIG. 3 is a view taken along the line II in FIG. 1;
FIG. 4 is a rear view of the control circuit according to the embodiment of the present invention.
FIG. 5 is a development view of the flexible printed circuit board according to the embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Control circuit 3 Flexible printed circuit board 5 Battery holder 7 Positive contact 9 Positive contact 11 Negative contact 13 Negative contact 15 Connecting part 17 Button cell 19 Positive electrode 21 Negative electrode 25 Holder base 27 Clip 29 Projection 31 Engagement Concave portion 37 Locking bent portion 39 Holding piece

Claims (5)

In a button battery mounting method for mounting a button battery on a flexible printed circuit board having a positive electrode contact and a negative electrode contact,
Part of the flexible printed circuit board so that the positive contact contacts and electrically connects to the positive electrode of the button battery and the negative contact contacts and electrically connects to the negative electrode of the button battery. Bending,
A method for mounting a button battery, comprising: holding the button battery together with the part of the flexible printed circuit board by an elastic force with a battery holder. In a battery holder used for mounting a button battery on a flexible printed circuit board having a positive contact and a negative contact,
Part of the flexible printed circuit board so that the positive contact contacts and electrically connects to the positive electrode of the button battery and the negative contact contacts and electrically connects to the negative electrode of the button battery. Under a bent state, a holder base capable of setting the button battery and the portion of the flexible printed circuit board,
A clip that is detachable from the holder base and that presses the button battery and the portion of the flexible printed circuit board toward the holder base by an elastic force;
A battery holder comprising: 3. The battery holder according to claim 2, wherein the holder base has a protrusion that regulates a displacement of the set button battery. 4. A flexible printed circuit board,
A battery holder mounted on the flexible printed circuit board and comprising the invention-specifying matter according to claim 2 or 3;
A control circuit, comprising: A positive electrode connection portion having a positive electrode contact,
A negative electrode connecting portion having a negative electrode contact,
A connection portion for connecting the connection portion for the positive electrode and the connection portion for the negative electrode,
When the button battery is interposed between the positive electrode connecting portion and the negative electrode connecting portion by being bent with reference to the bending line of the connecting portion, the positive electrode contact contacts the positive electrode of the button battery, and And the negative electrode contact is configured to contact and electrically connect to the negative electrode of the button battery.

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