JP4291547B2 - Battery storage device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dry cell storage device that stores a dry cell in which protruding electrode portions are formed.
[0002]
[Prior art]
An electronic device using a dry battery is provided with a housing portion that houses the dry battery. For example, when a cylindrical dry battery is accommodated in the 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.
[0003]
In such an electronic device, in order to stabilize the conduction resistance of the accommodated dry battery, it is desired that the dry battery does not move even if an external force such as an impact is applied to the electronic device and good contact conditions are maintained. .
[0004]
In order to maintain this contact condition, the dry cell is usually fixed by pressing the dry cell housing from the outside, and the electrode terminal of the dry cell is sandwiched by configuring the electrode terminal as a spring member. It is also made into a structure.
[0005]
[Problems to be solved by the invention]
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.
[0006]
As shown in FIG. 9, Japanese Patent Application Laid-Open No. 2001-243934 discloses that the electrode terminal 88 on the negative electrode side of the housing portion 82 is inclined, but this does not solve the above problem.
[0007]
In consideration of the above-described facts, the present invention provides a dry cell storage device that can maintain a good contact state of a dry cell without being affected by the dimensional tolerance of the dry cell, even when an external force such as an impact is applied to the electronic device from the outside. The task is to do.
[0008]
[Means for Solving the Problems]
The invention according to claim 1 is a dry cell housing device for housing a dry cell in which a projection protruding in a button shape is formed on an electrode portion, and an electrode terminal of the housing portion for housing the dry cell is connected to a corner of the projection. A curved concave surface having a substantially conical concave shape or a substantially hemispherical concave shape that abuts the portion is provided.
[0009]
The size of the opening side of the curved concave surface is usually larger than the diameter of the protruding portion of the dry battery so that the curved concave surface and the corner of the protruding portion of the dry battery can easily come into contact with each other.
[0010]
Thus, the invention according to claim 1 utilizes the fact that the protrusion protruding in a button shape is formed on the electrode part of the dry battery, and when the dry battery is accommodated in the accommodation part, the protrusion of the dry battery Is in a state of abutting the curved concave surface.
[0011]
As a result, the contact area between the electrode part of the dry battery and the electrode terminal of the housing part increases, and even when an external force such as an impact is applied to the housing part in the state where the dry battery is housed, the electrode part and the electrode terminal are not easily separated. Can be structured. 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. Moreover, the effect of extending the lifetime of a dry battery can also be show | played by this.
[0012]
Here, the conical concave surface is a surface recessed in a conical shape. When the curved concave surface is a substantially conical concave surface, the contact state between the protrusion and the curved concave surface can be further stabilized, and a structure in which the dry battery can be easily attached to and detached from the housing portion is facilitated.
Further, when the curved concave surface is a substantially hemispherical concave surface (a surface recessed in a substantially hemispherical shape), the contact portion can be easily formed by deep drawing or the like.
[0013]
The invention according to claim 2 is characterized in that a biasing mechanism that biases the curved concave surface toward the protrusion is provided.
[0014]
In order to provide this urging mechanism, for example, the electrode terminal may be configured by a leaf spring in which the curved concave surface is formed.
[0015]
According to the second aspect of the present invention, it is possible to easily eliminate the backlash of the dry battery that occurs between the housing portion and the housing portion.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described by taking a dry battery housing device provided in a camera as an example.
[0017]
[First form]
As shown in FIGS. 1-3, in the 1st form, the accommodating part 15 which accommodates the cylindrical dry battery 10 is provided in the camera. A positive electrode terminal (hereinafter, referred to as a positive terminal) 16 of the housing portion 15 has a leaf spring shape, and the dry battery 10 housed in the housing portion 15 is connected to a negative electrode terminal (hereinafter, negative electrode terminal) of the housing portion 15. It is supposed to urge toward 18).
[0018]
The positive electrode terminal 16 is formed with an abutting portion 17 that abuts on the protrusion 12 formed on the positive electrode portion 11 of the dry battery 10. That is, a conical concave curved concave surface 17S is formed in the contact portion 17, and when the dry battery 10 is accommodated in the accommodating portion 15, the corner 12E of the protrusion 12 is pressed against the curved concave surface 17S. Further, the opening diameter D of the curved concave surface 17 </ b> S is made larger than the diameter d of the positive electrode portion 11 in order to make the corner portion 12 </ b> E of the protrusion 12 easily accommodated in the contact portion 17. The contact portion 17 is usually formed by deep drawing.
[0019]
The negative electrode terminal 18 is formed of a spiral spring similar to the conventional one, and has a structure for biasing the dry battery 10 toward the positive electrode terminal 16.
[0020]
When the dry battery 10 is accommodated in the accommodating portion 15, the corner portion 12 </ b> E of the protrusion 12 of the dry battery 10 comes into contact with the curved concave surface 17 </ b> 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 portion 12E is difficult to come off from the curved concave surface 17S. Further, the contact portion 17 and the protrusion 12 are biased in the direction in which they are pressed against each other by the leaf spring structure of the positive terminal 16 and the spiral spring structure of the negative terminal.
[0021]
Thereby, 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 part 15, and the contact state between the protrusion 12 of the dry battery 10 and the positive terminal 16 of the housing part 15, 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 is 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.
[0022]
As shown in FIGS. 4 and 5, the cushioning elastic member 20 may be attached to the outer surface (the opposite side to the curved concave surface 17 </ b> S) 17 </ b> R of the contact portion 17. Thereby, when the dry battery 10 is accommodated in the accommodating portion 15, the curved concave surface 17 </ b> S is further urged toward the protruding portion 12.
[0023]
[Second form]
Next, a 2nd form is demonstrated. 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.
[0024]
As shown in FIGS. 6-8, in the 2nd form, the shape of the contact part 37 of the positive electrode terminal 36 of the accommodating part 35 which accommodates the dry battery 10 is a little different, and the shape of the curved concave surface 37S of the contact part 37 is shown. Is hemispherical concave.
[0025]
According to the second mode, the same effect as the first mode can be obtained. Further, the outer surface 37R of the abutting portion 37 has a semispherical round shape, and does not have a sharp shape.
[0026]
As mentioned above, although embodiment of this invention was described taking embodiment, the said embodiment is an example, It can implement in various changes within the range which does not deviate from a summary, such as changing the shape of a contact part. Needless to say, the scope of rights of the present invention is not limited to the above embodiment.
[0027]
【The invention's effect】
Since the present invention has the above configuration, the following effects can be obtained.
[0028]
According to the first aspect of the present invention, even when an external force such as an impact is applied to the housing portion in a state where 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 maintained at a stable value. easy. Moreover, the effect of extending the lifetime of a dry battery can also be show | played by this.
When the curved concave surface is substantially conical concave, it is easy to stabilize the contact state between the protrusion and the curved concave surface, and it is easy to make a structure in which the dry battery can be easily attached to and detached from the housing portion. Further, when the curved concave surface is a substantially hemispherical concave surface (a surface recessed in a substantially hemispherical shape), the contact portion can be easily formed by deep drawing or the like.
[0029]
According to the invention which concerns on Claim 2, the play of the dry battery produced between an accommodating part can be eliminated easily.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a side view showing a housing portion 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 portion for housing a dry battery in a first form (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 modification of the first embodiment (a state in which a dry battery is housed).
FIG. 6 is a side view showing a housing portion for housing a dry battery in a second form (a state in which a dry battery is not housed).
FIG. 7 is a side view showing a housing portion 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. FIG.
[Explanation of symbols]
10 Dry battery 11 Positive electrode part (electrode part)
12 Projection 12E Corner 15 Housing 16 Positive Terminal (Electrode Terminal)
17S Curved concave surface 35 Housing portion 36 Positive electrode terminal (electrode terminal)
37S curved concave surface 82 accommodating portion

Claims (2)

A battery accommodating device that accommodates a dry battery in which a protrusion protruding in a button shape is formed on an electrode part,
The electrode terminal of the accommodating portion for accommodating the batteries, battery housing apparatus characterized by substantially conical concave or substantially hemispherical concave curved concave is provided to abut a corner of the projection. The dry cell storage device according to claim 1, further comprising an urging mechanism that urges the curved concave surface toward the protrusion.

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