JPH08129997A - Battery holding mechanism - Google Patents

Abstract

PURPOSE: To prevent contact failure between a battery and an electrode caused by dust by normally holding a contact condition between one contact point and the battery even if the battery rotates in a battery holder. CONSTITUTION: A first contact point part 10 and a second contact point part 11 are arranged on a (-) electrode 3. When a battery rotates in a battery holding mechanism since impact and vibration are applied to an electronic equipment, the possibility that dust enters between the electrode and the battery is caused. Here, the possibility that dust simultaneously enters both between the first contact point part 10 arranged on the (-) electrode 3 and a minus of the battery and between the second contact point part 11 and a minus of the battery, is thought to be fairly smaller than the possibility that dust enters between the battery and the electrode when a contact point part of the electrode is one. Therefore, even if contact failure is caused since dust enters between the first contact point part 10 and the battery 1, since the dust does not enter between the other second contact point part 11 and the battery 1, a contact condition between a (-) pole of the battery and the (-) electrode 3 can be held in a normal condition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery holding structure in an electronic device containing a circular coin battery. In recent years, as electronic devices such as mobile devices have become smaller, power sources for supplying electric power to the electronic devices have also been made smaller. A circular coin-shaped battery such as a lithium battery is widely used as such a power source.

Since many of these electronic devices are used while being carried, vibration and impact are easily applied to the main body of the device. The battery set in the device is also easily affected by such vibration and shock. Therefore, there is a demand for a battery holding mechanism that reduces the effects of vibration and shock applied to the device.

[0003]

2. Description of the Related Art FIG. 5 is an example of an apparatus using a coin battery and is a drawing showing the appearance of a so-called RAM card. A RAM card is used together with a portable electronic device, and has a RAM (randam access m
emory) is provided. Data and the like generated in the electronic device are stored and held in this RAM. In the figure, reference numeral 21 denotes a connector, which is connected to a connector of an electronic device when used in the electronic device.

In order to hold the data in the RAM, it is necessary to always back up with a battery or the like.
Since the AM card is small, a circular coin type battery (hereinafter referred to as a battery) such as a lithium battery is often built in the RAM card as a backup power source. A battery holder for holding a battery is provided in the RAM card, and the battery is set in this holder.

A battery holder for holding a battery is housed in a portion 22 of FIG. FIG. 6 is a view showing a conventional battery holding mechanism, which is contained in 22 of FIG. In FIG. 6, 1 is a coin-type battery (battery), 2 is a holder, 7 is a negative electrode, and 8 is a positive electrode.

The negative electrode is in contact with the negative electrode of the battery, and the positive electrode is in contact with the positive electrode of the battery. A spring-like material having elasticity is used for both the + electrode and the-electrode, and is configured to always be in pressure contact with the battery.

[0007]

In the conventional battery holding mechanism, no means for fixing the battery itself has been taken. Therefore, when vibration or shock is applied to the electronic device body, the battery rotates inside the battery holding mechanism.

The rotation of the battery causes dust to enter between the battery and the battery holder or the electrode, which causes poor contact between the battery and the electrode. Therefore, in the conventional battery holding mechanism, various effects have occurred on the supply of backup power to the RAM card.
In order to prevent such a rotation of the battery, it has been considered to fix the battery 1 with a tape 20 as shown in FIG. By adopting such a method, it is possible to prevent the rotation of the battery. However, it is necessary to remove the tape 20 each time the battery 1 is removed from the battery holding mechanism in order to replace the battery. Further, it is necessary to replace the tape 20 each time the battery 1 is set and fix the battery 1 with the tape 20.

As described above, in the method of fixing the battery with the tape, there is a problem that the unnecessary work such as the removal and replacement of the tape is increased, and the battery replacement work cannot be efficiently performed. Therefore, in the present invention, the rotation of the battery due to the vibration and shock applied to the electronic device is prevented,
Prevents poor contact at the contact point between the battery and the electrode,
An object of the present invention is to realize a battery holding mechanism that facilitates effective work of a battery.

[0010]

In order to achieve the above-mentioned object, claim 1 of the present invention comprises a battery holder in which a coin-type battery is set, and a plurality of contact portions which come into contact with the + pole of the battery. It is characterized by comprising an electrode and an electrode-having a plurality of contact portions that come into contact with the electrodes of the battery. Further, a second aspect of the present invention is characterized in that the plurality of contact points of the electrodes are arranged on different circles from one another on the circle with the center point of the battery as a reference. To do.

In particular, the plurality of contacts are arranged on a circumference having different distances from the center of the battery. Further, a fourth aspect of the present invention is characterized by including a battery holder in which the coin-type battery is set, an electrode that comes into contact with the battery, and an elastic portion that comes into contact with an outer peripheral portion of the battery and holds the battery.

In particular, the elastic portion is attached to a battery holder which is removable from the battery holding mechanism (claim 5).

[0013]

According to claim 1 of the present invention, since a plurality of contact portions of the electrodes are provided, even if dust or the like enters between one contact portion and the battery, the other contact portion causes the battery The contact state between the electrode and the electrode is secured. Also,
According to the second aspect, by not arranging the respective contact portions on the same circumference of the battery, contact failure due to dirt of the battery or the like can be prevented even if the battery rotates.

As the circumferences at which the respective contact portions come into contact with the battery, it is possible to select circumferences having different distances from the center of the battery. Further, according to claim 4 of the present invention, the outer peripheral portion of the battery is brought into contact with the elastic body, and the elastic body holds the battery so as not to rotate in the battery holding mechanism. This elastic body is
In particular, it can be attached to a member removable from the battery holding mechanism.

[0015]

【Example】

[First Embodiment] FIG. 1 is a view showing a battery holding mechanism according to an embodiment of the present invention. In FIG. 1, 1 is a battery,
2 is a battery holder. The battery holder 2 is pressed so as to cover the battery 1, and can be detached from the battery holding mechanism body. Also, 3 is an-electrode and 4
Is the + electrode.

-The electrode 3 has a first contact portion 10 at its tip.
And a plurality of contacts of the second contact part 11 are provided, and the negative electrode of the battery 1 and the negative electrode 3 are in contact with each other at two positions of the first contact part 10 and the second contact part 11. . Similarly, + electrode 4
Is provided with a third contact portion 12 and a fourth contact portion 13, and the + electrode of the battery 1 and the + electrode 4 are in contact with each other at two locations. In the figure, (1) shows the positions of the respective contact portions of the + electrode when the battery is not set, and (2) shows the positions of the respective contact portions when the battery is set.

As described above, the positive electrode and negative electrode of the battery are in contact with the positive electrode and the negative electrode at a plurality of points. Here, the negative electrode 3 will be described as an example. The electrode 3 is provided with the first contact portion 10 and the second contact portion 11 as described above. If the battery is rotated in the battery holding mechanism when shock or vibration is applied to the electronic device, dust may enter between the electrode and the battery.

Here, dust is simultaneously present between both the first contact portion 10 provided on the electrode 3 and the negative electrode of the battery and between the second contact portion 11 and the negative electrode of the battery. The possibility of getting in is considered to be considerably smaller than the possibility of getting dust between the battery and the electrode when the number of contact points of the electrode is one. Therefore, even if dust enters between the first contact portion 10 and the battery 1 and contact failure occurs,
Dust does not enter between the other second contact portion 11 and the battery 1, and the contact state between the negative electrode of the battery and the electrode 3 can be maintained in a normal state.

As described above, according to the present embodiment, at least one of the first contact portion 10 and the second contact portion 11 of the electrode must be kept in a state of being surely in contact with the negative electrode of the battery. Since it is possible to prevent poor contact between the battery and the electrode,
It is possible to reduce the influence on the power supply due to the contact failure. Also for the + electrode 4, the third contact portion 12
And a fourth contact portion 13 are provided. Therefore, it can be considered that the possibility of dust entering between the third contact portion 12 and the battery and between the fourth contact portion 13 and the battery at the same time is considerably small. Therefore, at least one of the third contact portion 12 and the fourth contact portion 13 of the + electrode 4 can maintain a normal contact state with the battery 1 and prevent contact failure between the battery and the electrode. You will be able to.

As described above, by providing a plurality of contacts for each electrode as in the present embodiment, even if the battery rotates in the battery holder, the contact state between the one contact and the battery is maintained in a normal state. Therefore, it is possible to prevent contact failure between the battery and the electrode due to dust. FIG. 2 is an enlarged view of the electrode part according to the present embodiment. In the figure, 10 is the first contact of the electrode, 1
1 is the second contact of the electrode. Moreover, 14 has shown the center of a battery.

In FIG. 2, the circumference 15 indicates the portion where the first contact portion 10 contacts the negative electrode 10 of the battery 5, and similarly, the circumference 16 indicates the second contact portion 11 of the battery 5 in the circumference 16. -It shows a portion in contact with the electrode 11. Circle 15 and Circle 16
When compared with, the circumference 15 is more centered than the circumference 16.
Distance from 4 is far. As you can see from this drawing,
In the case of this example, the first contact portion 10 and the second contact portion 11 do not come into contact with the battery on the same circumference of the negative electrode of the battery, and the respective electrodes are arranged so that the positions where they come into contact with the battery are displaced. It is arranged.

If minute stains or scratches are present on the battery and the electrode rides on this stain, poor contact between the electrode and the battery occurs as in the case of dust. Here, it is assumed that the first contact portion and the second contact portion are arranged on the same circumference of the negative pole of the battery. When dirt is present on this circumference, the position of dirt on the circumference changes when the battery rotates in the battery holding mechanism, but the contact point of the electrode is 2
Since the two contact points are provided, there is a high possibility that one of the contact points will come into contact with dirt. Therefore, the possibility of poor contact between the electrode and the battery also increases.

On the other hand, as shown in FIG. 2, when the positions of the electrodes are arranged on different circumferences of the battery, even if the circumference 15 is contaminated, the first There is only a possibility that the contact portion 10 will come into contact with dirt, and the second contact portion 11 will not come into contact with this dirt. The possibility that dirt and the like will occur simultaneously on the circumferences 15 and 16 is not so high, and contact failure will occur simultaneously on the first contact portion 10 and the second contact portion 11 due to dirt on the battery. The possibility of doing so is also small. Therefore, by arranging the contact portions of the electrodes as shown in FIG. 2, it is possible to deal with the occurrence of contact failure of the electrodes due to stains, scratches, etc. on the battery.

Although the negative electrode has been illustrated and described here, there is a possibility that the positive electrode may also cause poor contact due to contamination of the battery. Therefore, the arrangement positions of the third contact portion 12 and the fourth contact portion 13 of the + electrode are changed to + of the battery.
If the electrodes are displaced in the width direction, the third contact portion 12
And the fourth contact portion 13 do not come into contact with the same circumference of the + pole of the battery. Therefore, it is possible to maintain the contact state of at least one contact portion with the battery without the other contact portion coming into contact with dirt or the like existing on the circumference of the battery with which the one contact portion contacts. .

Since the object of the present invention can be sufficiently achieved even if each contact part is arranged on the same circumference of the battery, the contact parts of the electrodes are not necessarily arranged on different circumferences of the battery. It is not essential. In the case of FIG. 2, since there are two contact parts, respectively, when one contact part contacts the dirt of the battery and dust gets between the other contact part and the battery, both contact parts are Poor contact may occur at the same time, causing inconvenience. However, the possibility of contact failure occurring at both contact portions at the same time is not so great, even if the reason is different. In most cases, if two contact portions are provided, the object of the present invention is It can be fully achieved.

As a matter of course, the number of contact points is three.
Alternatively, the number of contact points can be increased, and as the number of contact points is increased, the probability of occurrence of contact failure at all contact points can be reduced. for that reason,
The number of contact points of each electrode may be increased in advance when it is expected that there are many factors causing contact failure of the electrodes due to the environment in which the electronic device is used.

Further, in the case of the present embodiment, the positive electrode and the negative electrode are provided with the same number of contact portions, but the number of contact portions does not have to be the same between the electrodes. The object of the present invention can be achieved even if the number of contact portions of one electrode is different from the number of contact portions of the other electrode. If necessary, one electrode may have a plurality of contact portions and the other electrode may have a single contact portion.

FIG. 3 is a side view of an electrode and a battery according to this embodiment. As shown in FIG.
A convex portion 15 is provided in the middle of the contact point of the electrode so that the contact point portion comes into point contact with the battery. With this configuration, the contact pressure per unit area of the contact portion increases, and the reliability of contact of the contact portion with the battery can be improved.

Further, the third contact portion 12 of the + electrode 4 in FIG.
Even if the edge of the cut surface obtained by cutting the metal plate used for the contact portion is brought into contact with the battery like the tip 12-1 of the above, it is possible to obtain a large contact pressure at the contact portion. Become. [Second Embodiment] FIG. 4 shows a second embodiment of the present invention.

In FIG. 4, 5 is a battery, 6 is a battery holder, 7 is a negative electrode, and 8 is a positive electrode, which has almost the same structure as the battery holding mechanism shown in FIG. In this embodiment, an elastic body 9 is further provided on a part of the battery holding mechanism. The elastic body 9 is made of an elastic member such as rubber. The elastic body 9 is attached to the battery holder 6, and is attached so as to come into contact with the outer peripheral portion of the battery 5 when the battery 5 is set.

The elastic body 9 and the outer peripheral portion of the battery 5 come into contact with each other while the battery holder 9 is attached to the battery holding mechanism. The battery 5 is held by the frictional resistance with the elastic body 9 so as not to rotate in the battery holding mechanism. As described above, according to the present embodiment, the battery 5 is prevented from rotating in the battery holding mechanism, so that it is possible to prevent the occurrence of the contact failure between the battery and the electrode caused by the rotation of the battery. it can.

Further, according to this embodiment, since it is not necessary to fix the battery with a tape or the like, it is possible to reduce the work of replacing the tape when the battery is replaced, and the battery replacement work is simpler than the conventional one. Can be converted. According to this embodiment, it is not necessary to remove the elastic body 9 from the battery holding mechanism even when the battery is replaced. When an elastic body is to be provided to an electronic device that is not originally provided with the elastic body according to this embodiment, it is difficult to attach the elastic body to the electronic device body. That is, the size of the battery holding mechanism itself is not so large, and in many cases there is no room to mount the elastic body in the electronic device. for that reason,
If you want to attach an elastic body to the electronic device body,
A possible method is to newly create an electronic device having an elastic body and replace the original electronic device.

However, the electronic device itself is not so cheap, and there is a problem that replacement of the electronic device itself requires a high cost. On the other hand, if the elastic body is attached to a member that can be detached from the main body of the electronic device like the battery holder 2 shown in FIG. 4, the elastic body according to the present embodiment is applied to the conventional electronic device. To do this, for example, only the battery holder needs to be replaced. The cost of the battery holder is much smaller than the cost of the electronic device body, and even if there are many electronic devices, there is an effect that the economical burden is not so large.

Needless to say, an elastic body may be provided in the main body of the electronic device for a completely new electronic device. By using the electrode according to the first embodiment and the elastic member according to the second embodiment at the same time, the effect of preventing contact failure between the battery and the electrode can be further improved by the synergistic effect of the two embodiments. You can

[0035]

As described above, according to the present invention, it is possible to prevent the contact failure of the contact portion between the battery and the electrode portion, and further, the battery replacement work can be performed in the same manner as in the past. Becomes According to claim 1, since the contact portions between the battery and the electrodes are plural respectively, even if a contact failure due to dust occurs at one of the contact portions, the contact state between the battery and the electrode is maintained by the other contact portion. Can be secured.

In particular, by arranging the contact portions on different circumferences of the battery, it is possible to suppress the occurrence of contact failure due to dirt or the like of the battery. Further, according to claim 4, the rotation of the battery in the battery holding mechanism can be suppressed, and further, the contact failure between the battery and the electrode can be prevented. In particular, by providing an elastic body on a member that can be detached from the battery holding mechanism, an economical burden is imposed when the elastic body according to the present invention is applied to an electronic device that is not provided with a conventional elastic body. It can be reduced.

[0037]

[Brief description of drawings]

FIG. 1 is a diagram illustrating an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of the first embodiment.

FIG. 3 is a side view of an electrode according to the first embodiment.

FIG. 4 is a diagram illustrating a second embodiment of the present invention.

FIG. 5 is a diagram showing an appearance of a RAM card.

FIG. 6 is a view showing a conventional battery holding mechanism.

FIG. 7 is a drawing showing an example of a conventional battery holding mechanism in which a battery is fixed with a tape.

[Explanation of symbols]

 In the figure, 1, 5 ... Battery (circular coin battery) 2, 6 ... Battery holder 3, 7 ...- Electrode 4, 8 ... + Electrode 9 ... Elastic member 10, 11, 12, 13, ... Contact parts of electrodes 15 ...

(72) Inventor Kazumasa Sudo 1015 Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Fujitsu Limited

Claims (5)

[Claims] 1. A battery holding mechanism for holding a coin-type battery, a battery holder in which the coin-type battery is set, a + electrode having a plurality of contact portions that come into contact with the + electrode of the battery, and a-electrode of the battery. A battery holding mechanism, comprising: a plurality of contact portions that come into contact with the electrode; 2. The battery holding mechanism according to claim 1, wherein the plurality of contacts are arranged on different circles from each other with respect to a circle around the center point of the battery. The battery holding mechanism described. 3. The battery holding mechanism according to claim 2, wherein the plurality of contacts are arranged on circumferences having different distances from the center of the battery. 4. A battery holding mechanism for holding a coin-type battery, wherein a battery holder in which the coin-type battery is set, an electrode in contact with the battery, and an elastic member in contact with the outer periphery of the battery for holding the battery. And a battery holding mechanism. 5. The battery holding mechanism according to claim 5, wherein the elastic portion is provided on a member detachably attached to the battery holding mechanism.
The battery holding mechanism according to claim 4.