JP2003346752A - Dry battery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dry battery structure that can maintain a good contact state of the dry battery without being affected by the dimension tolerance of the dry battery, even if an outside force such as impact is inflicted on the electronic equipment from outside. <P>SOLUTION: A housing part 15 for housing a dry battery 10 available on the market is provided on a camera. A protrusion 12 protruded in button-shape is formed at the positive electrode 11 of this battery 10 and a bent recess 17S that contacts the corner 12E of the protrusion 12 is provided on the positive electrode terminal 16 of the housing part 15. When the dry battery 10 is housed in the housing part 15, the protrusion 12 and the bent recess 17S are energized in a direction mutually pressed each other while the protrusion 12 of the dry battery 10 is in contact with the bent recess 17S. Thereby, the contact area between the positive electrode 11 and the positive electrode terminal 16 of the housing part 15 increases and the positive electrode 11 and the positive electrode terminal 16 are not easily separated, even if an outside force such as impact is inflicted on the housing part 15 while the battery 10 is housed. <P>COPYRIGHT: (C)2004,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry cell housing structure for housing a dry cell having a projecting electrode portion.

[0002]

2. Description of the Related Art An electronic device using a dry battery is provided with a housing portion for housing the dry battery. When, for example, a cylindrical dry battery is accommodated in this accommodating part, the electrode parts formed at both ends in the longitudinal direction of the dry battery are in contact with the electrode terminals provided in the accommodating part.

In such an electronic device, in order to stabilize the conduction resistance of the accommodated dry battery, it is desirable that the dry battery does not move even when an external force such as an impact is applied to the electronic device and good contact conditions are maintained. It is rare.

In order to maintain this contact condition, the dry cell is usually fixed by pressing the dry cell housing from the outside, and further, the electrode terminal of the dry cell is formed by constituting the electrode terminal with a spring member. It is also done to make the structure to sandwich.

[0005]

However, in consideration of the dimensional tolerance of the dry battery, the structure of the housing portion described above must be a structure having a backlash. For this reason, it is difficult to prevent the movement of the dry battery when an external force such as an impact is applied to the electronic device only by pressing the dry battery housing from the outside or holding it with the clamping pressure by the electrode terminal of the housing part. There was a problem that there was.

Incidentally, as shown in FIG.
243934 includes an electrode terminal 88 on the negative electrode side of the accommodating portion 82.
However, it does not lead to solving the above problem.

In consideration of the above facts, the present invention can accommodate a dry battery without being affected by the dimensional tolerance of the dry battery, and can maintain a good contact state of the dry battery even if an external force such as an impact is applied to the electronic device. It is an object to provide a structure.

[0008]

Means for Solving the Problems The invention according to claim 1 provides:
A projecting portion protruding like a button is a dry cell housing structure for housing a dry cell formed on an electrode portion, and an electrode terminal of the housing portion for housing the dry cell is provided with a curved concave surface that comes into contact with a corner portion of the projecting portion It is characterized by that.

The size of the opening side of the curved concave surface is usually larger than the diameter of the protruding portion of the dry cell so that the curved concave surface and the corner of the protruding portion of the dry cell can easily come into contact with each other.

In this way, the invention according to claim 1 utilizes the fact that the protruding portion protruding in the shape of a button is formed on the electrode portion of the dry cell, and when the dry cell is accommodated in the accommodating portion, the dry cell The corners of the protrusions are in contact with the curved concave surface.

As a result, the contact area between the electrode portion of the dry battery and the electrode terminal of the housing portion increases, and even if an external force such as an impact is applied to the housing portion while the dry battery is housed, the electrode portion and the electrode terminal Can be made difficult to separate. Therefore, it is easy to maintain the contact resistance between the electrode part and the electrode terminal, that is, the contact resistance between the dry battery and the housing part at a stable value. Also,
As a result, the effect of extending the life of the dry battery can also be achieved.

According to a second aspect of the present invention, there is provided an urging mechanism for urging the curved concave surface toward the projection.

In order to provide this urging mechanism, for example, the electrode terminal may be constituted by a leaf spring having the curved concave surface.

According to the second aspect of the present invention, it is possible to easily eliminate the backlash of the dry battery generated between the battery and the housing.

The invention according to claim 3 is characterized in that the curved concave surface is substantially conical concave.

The conical concave surface is a conical concave surface. According to the third aspect of the invention, the contact state between the protrusion and the curved concave surface can be further stabilized, and the dry battery can be easily attached to and detached from the housing portion.

The curved concave surface may be a substantially hemispherical concave surface (a surface recessed in a substantially hemispherical shape). Thereby, it is easy to form the contact portion by deep drawing or the like.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below by taking a dry battery housing structure provided in a camera as an example.

[First Embodiment] As shown in FIGS. 1 to 3, in the first embodiment, a housing portion 15 for housing a cylindrical dry battery 10 is used.
Is provided on the camera. An electrode terminal 16 (hereinafter referred to as a positive electrode terminal) 16 on the positive side of the housing portion 15 is in the form of a leaf spring, and the dry battery 10 housed in the housing portion 15 is accommodated in the housing portion 15.
The electrode terminal (hereinafter referred to as the negative electrode terminal) 18 on the negative electrode side is biased.

The positive electrode terminal 16 has a positive electrode portion 1 of the dry battery 10.
An abutting portion 17 is formed to abut against the projecting portion 12 formed in 1. That is, the contact portion 17 is formed with a conical concave curved concave surface 17 </ b> S, and the dry battery 10 is accommodated in the housing portion 1.
5, the corner 12 </ b> E of the protrusion 12 is curved concave 1.
7S is pressed. Further, in order to make the corner portion 12E of the protrusion 12 easily accommodated in the contact portion 17, the curved concave surface 17 is provided.
The opening diameter D of S is made larger than the diameter d of the positive electrode part 11. The contact portion 17 is usually formed by deep drawing.

The negative electrode terminal 18 is formed of a spiral spring similar to the conventional one, and has a structure for urging the dry battery 10 toward the positive electrode terminal 16.

When the dry battery 10 is housed in the housing portion 15, the corner 12 E of the protrusion 12 of the dry battery 10 contacts the curved concave surface 17 S of the contact portion 17. Since the opening diameter D of the curved concave surface 17S is larger than the diameter d of the protrusion 12 of the dry battery 10, the corner 12
E is difficult to come off from the curved concave surface 17S. The positive terminal 16
Due to the leaf spring structure and the spiral spring structure of the negative electrode terminal, the contact portion 17 and the protrusion 12 are biased in the direction in which they are pressed against each other.

Thus, even when an external force such as an impact is applied to the camera, the dry battery 10 does not move from the state where it is set in the housing portion 15, and the contact between the protrusion 12 of the dry battery 10 and the positive terminal 16 of the housing portion 15. The state and the contact state between the negative electrode portion 9 of the dry battery 10 and the negative electrode terminal 18 of the housing portion 15 are both maintained in a good state. Therefore, the contact resistance between the dry battery 10 and the accommodating portion 15 can be maintained in a stable state even when an external force such as an impact is applied from the outside without being affected by the dimensional tolerance of the dry battery 10.

As shown in FIGS. 4 and 5, the cushioning elastic member 20 is attached to the outer surface of the contact portion 17 (curved concave surface 1).
It may be affixed to 17R (on the opposite side to 7S). Thereby, when the dry cell 10 is accommodated in the accommodating part 15,
The curved concave surface 17S is further biased toward the protrusion 12.

[Second Embodiment] Next, the second embodiment will be described. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted.

As shown in FIGS. 6 to 8, in the second embodiment,
The shape of the contact portion 37 of the positive electrode terminal 36 of the housing portion 35 that houses the dry battery 10 is slightly different, and the shape of the curved concave surface 37S of the contact portion 37 is a hemispherical concave surface.

According to the second embodiment, the same effect as the first embodiment can be obtained. In addition, the outer surface 37R of the contact portion 37
Is a semi-spherical rounded shape, not a pointed shape.

Although the embodiments of the present invention have been described above with reference to the embodiments, the above embodiments are merely examples, and various modifications can be made without departing from the spirit of the invention, such as changing the shape of the contact portion. Can be implemented. Needless to say, the scope of rights of the present invention is not limited to the above embodiment.

[0029]

Since the present invention has the above configuration, the following effects can be obtained.

According to the first aspect of the present invention, even when an external force such as an impact is applied to the housing portion while the dry battery is housed, the contact resistance between the electrode portion of the dry battery and the electrode terminal of the housing portion is stabilized. Easy to maintain. Moreover, the effect of extending the lifetime of a dry battery can also be show | played by this.

According to the second aspect of the present invention, it is possible to easily eliminate the backlash of the dry battery generated between the battery and the housing.

According to the third aspect of the present invention, the contact state between the electrode portion and the curved concave surface can be further stabilized, and the dry battery can be easily attached to and detached from the housing portion.

[Brief description of the drawings]

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a side view showing a housing part for housing a dry battery in a first mode (a state where a dry battery is not housed).

FIG. 2 is a side view showing a housing part for housing a dry battery in the first embodiment (a state in which a dry battery is housed).

FIG. 3 is a partially enlarged view of FIG. 2;

FIG. 4 is a side view showing a modification of the first embodiment (a state in which a dry battery is not accommodated).

FIG. 5 is a side view showing a modified example of the first embodiment (a state in which a dry battery is accommodated).

FIG. 6 is a side view showing a housing portion for housing a dry battery in a second form (a state where a dry battery is not housed).

FIG. 7 is a side view showing a housing part for housing a dry battery in a second form (a state in which a dry battery is housed).

FIG. 8 is a partially enlarged view of FIG. 7;

9 (A) to 9 (C) are side cross-sectional views showing a procedure for storing a dry cell in a conventional dry cell storage box, respectively.

[Explanation of symbols]

10 batteries 11 Positive electrode part (electrode part) 12 Projections 12E Corner 15 receiving section 16 Positive terminal (electrode terminal) 17S curved concave surface 35 containment 36 Positive terminal (electrode terminal) 37S curved concave surface 82 containment

Claims (3)

[Claims] 1. A dry cell housing structure for housing a dry battery in which a protrusion protruding in a button shape is formed in an electrode portion, wherein the projecting portion contacts an electrode terminal of the housing portion for housing the dry battery. A dry cell housing structure characterized in that a curved concave surface is provided. 2. The dry cell housing structure according to claim 1, further comprising an urging mechanism for urging the curved concave surface toward the protrusion. 3. The dry cell housing structure according to claim 1, wherein the curved concave surface is substantially conical concave.