JP2000082450A - Dry cell holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dry cell holder of a two-series packed type, capable of preventing defective contact of and damage to a contact for enabling good conduction and preventing troubles, when dry batteries are erroneously packed. SOLUTION: A positive electrode part 14 consists of a moving plate 22 which is movable vertically along a slit 21, a coil spring 23 for energizing the moving plate 22 toward a positive electrode 16a of a first dry cell 10a and a lead wire 24. The lower face of the moving plate 22 is provided with a ring insulator 25, in which a hole 25a is formed at the center where a protruded portion 16b defining the positive electrode 16a of the dry cell 10a enters. At the bottom of the hole 25a, a positive electrode contact piece 26 is formed for contacting the positive electrode 16a. When the dry cell 10a is charged properly in a first cell chamber, the protruded portion 16b defining the positive electrode 16a of the dry cell 10a enters into the hole 25a in the insulator 25 and contacts the positive electrode contact piece 26 at the bottom of the hole 25a, and then the positive electrode 16a of the dry cell 10a is connected to a circuit via the lead wire 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry battery, and more particularly, to a dry battery holder for preventing an accident due to erroneous loading.

[0002]

2. Description of the Related Art A dry battery for supplying power to various electronic devices has a contact portion that contacts both poles of the dry battery.
It is often used by loading it into dry battery holders that hold one or more batteries. When a dry battery is loaded in such a dry battery holder, if the dry battery is incorrectly loaded in the direction in which the battery is connected in the opposite direction to the predetermined polarity, not only does the device not operate properly, but also the electric power of the device loaded with the dry battery. There is also a risk of damaging the circuit or, in severe cases, of exploding batteries.

[0003] In order to prevent such erroneous loading of dry batteries, the direction of correctly inserting dry batteries is indicated by a pattern or the like on the dry battery holder, but in many cases, the dry battery is displayed small inside the dry battery holder. There are many things that are difficult to understand. Also, the indication of the insertion direction of the dry battery, etc.
Since it does not structurally prevent battery misloading,
It did not effectively prevent misloading.

[0004] In consideration of the above-mentioned circumstances, conventionally, the convex shape of the positive electrode of the dry battery has been utilized so that, for example, only the convex shape of the positive electrode of the dry battery can contact the contact portion on the positive electrode side.
In addition, the contact part on the negative electrode side is provided with a contact piece only on the part located outside the convex part of the positive electrode of the dry battery, etc., so that it is not electrically connected even if the dry battery is incorrectly loaded. It has been known.

[0005]

As described above, a dry battery holder having a structure that does not conduct electricity even when erroneously loaded has a relatively strictly shaped contact based on the shape of each of the two poles of the dry battery. Part. On the other hand, a relatively large outer dimension error of a dry cell is allowed. For example, a length error of an AA dry cell is ± 1.5 mm.

For this reason, in a dry battery holder in which two dry batteries are loaded in series, the total error becomes considerably large. For example, in the case of the above-described series connection of AA dry batteries, an error of up to 3 mm in the length direction is possible. Will occur. Such a large error causes a contact failure or breakage of the contact portion even in a case where the dry battery is normally loaded in a dry battery holder having a dimensionally severe contact portion to prevent erroneous loading, It is a problem.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been developed to prevent a contact failure or breakage of a contact portion, thereby enabling good conduction, and preventing an accident when a dry battery is incorrectly loaded.
It is an object of the present invention to provide a dry battery holder of an individual series loading type.

[0008]

In order to achieve the above object, the present invention has a positive electrode contact portion that contacts a positive electrode of a first dry battery and a negative electrode contact portion that contacts a negative electrode of a second battery. The negative electrode of the first dry battery and the positive electrode of the second battery are brought into direct contact with each other to hold the two dry batteries in a straight line in series connection. At least the dry battery, comprising: an insulator having a hole into which the convex portion enters, and a positive electrode contact piece provided at the bottom of the hole and in contact with the positive electrode; and the negative electrode contact portion provided at a central portion. An insulator having a diameter larger than the diameter of the convex portion of the positive electrode, and a negative contact piece provided outside the insulator and in contact with the outer periphery of the negative electrode. At least one of the parts is the positive electrode Serial is obtained by biasing to be movable in a direction of pressing the negative electrode.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an electronic camera with a printer incorporating a dry battery holder according to the present invention will be described below.
FIG. 2 is a perspective view of an electronic camera with a printer incorporating the dry battery holder of the present invention. Electronic camera with printer 2
Has an optical printer provided therein, and stores an instant film pack.

At the upper left of the electronic camera 2 with a printer,
An imaging unit 3 having a built-in photographing lens and a CCD is formed. At the center of the front surface, a film chamber lid 4 for inserting and removing the instant film pack is pivotally mounted so as to be freely opened and closed. In addition, a strobe light emitting section 5 is provided above the film chamber cover 4.
However, a release button 6 is formed on the right side of the film chamber cover 4.

A discharge port 8 for discharging the exposed instant film 7 is formed on the upper surface of the electronic camera 2 with a printer. A battery holder lid 9 for mounting a dry battery 10 in a dry battery holder, which will be described in detail later, is pivotally mounted on the right side surface of the electronic camera 2 with a printer so as to be freely opened and closed.

With such a configuration, the image data of the subject picked up by the image pickup section 3 is sent to the optical printer, and the subject image is exposed on the instant film 7. Then, the exposed instant film 7 is discharged from the discharge port 8.

FIG. 3 is a plan view showing a dry battery holder of the present invention. A dry battery holder 11 built in the electronic camera 2 with a printer has a first battery chamber 12 in which an outer shell is formed of a resin plate or the like, in which two dry batteries 10 are arranged in a straight line in a vertical direction, and a dry battery 10. The second to store two side by side
And a battery chamber 13. A total of four dry batteries 10a to 10d stored in the first battery chamber 12 and the second battery chamber 13
Are electrically connected in series, and a power of 6V voltage is taken out.

A positive electrode portion 14 is provided above the first battery chamber 12 so as to be in contact with the positive electrode 16a of the first dry battery 10a. In addition, a negative electrode part 15 that contacts the negative electrode 17c of the second dry battery 10b is provided below the first battery chamber 12. FIG. 1 is an explanatory view showing a positive electrode portion of a first battery chamber in a dry battery holder of the present invention. Positive electrode part 14
Is a movable plate 22 movable vertically along the elongated hole 21
And the moving plate 22 is connected to the positive electrode 16a of the first dry battery 10a.
It comprises a coil spring 23 biasing in the direction and a lead wire 24.

On the lower surface of the movable plate 22, there is provided a ring-shaped insulator 25 having a hole 25a formed in the center thereof into which a convex portion 16b forming the positive electrode 16a of the dry battery 10a is inserted. The diameter of the hole 25a is slightly larger than the diameter of the convex portion 16b of the positive electrode 16a, and a positive electrode contact piece 26 that contacts the positive electrode 16a is formed at the bottom of the hole 25a.
The positive electrode contact piece 26 is connected to the lead wire 24 in the movable plate 22, and is connected to the power supply point of the circuit board via the lead wire 24.

With such a configuration, when the batteries 10a and 10b are properly loaded in the first battery chamber 12, the batteries 1
The convex portion 16b that forms the positive electrode 16a of the insulator 2
5, the positive electrode contact piece 2 at the bottom of the hole 25a.
6 and the positive electrode 16a of the dry battery 10a
Is connected to the circuit via.

On the other hand, as shown in FIG.
If the battery 10a is incorrectly loaded in the opposite direction,
The negative electrode 16c of the flat dry battery 10a is
And does not contact the positive electrode contact piece 26 at the bottom of the hole 25a, so that the negative electrode 16c of the erroneously loaded dry battery 10a is not connected to the circuit. As a result, accidents such as damage to the electric circuit and rupture of the dry battery 10a due to erroneous loading of the dry battery 10a can be reliably prevented.

By the way, a certain degree of error is recognized in the dimensional standard in the length direction of the dry battery. For example, in the case of AA batteries, the range is defined as 49 mm to 50.5 mm. For this reason, when two dry batteries 10 are stored in a straight line as in the first battery compartment 12, the maximum error of the dry batteries 10 is two, and an error range of ± 3.0 mm at maximum occurs. Will be.

In response to such an error, the moving plate 22 that moves along the elongated hole 21 is, for example,
In the case of size, it can be moved at least 3 mm or more. Then, the positive electrode 16a of the dry battery 10a and the positive electrode contact piece 2
The movable plate 22 is urged by the coil spring 23 in the direction of the dry battery 10a in order to make the contact with the battery 6 reliably.

As described above, the movable plate 22 can be moved more than the error range of the size of the dry battery 10 in the longitudinal direction, so that the severe positive electrode portion having a size corresponding to the shape of the positive electrode 16a of the dry battery 10a is obtained. 14 can be securely connected to the dry battery 10 without being affected by errors in the size of the dry battery 10 in the longitudinal direction.
a of the positive electrode 16a.

FIG. 5 is an explanatory view showing the negative electrode portion of the first battery compartment in the dry battery holder of the present invention. The negative electrode portion 15 includes a ring-shaped negative electrode contact piece 31 that comes into contact with the negative electrode 17c of the second dry battery 10b, an insulator 32 provided at a hole-shaped center of the negative electrode contact piece 31, and a negative electrode contact piece 31. A conductive plate 33 formed integrally and connected to a power supply point of a circuit board
Consists of

The negative electrode contact piece 31 is connected to the positive electrode 17 of the dry battery 10b.
a is larger than the diameter of the protruding portion 17b and
b is a ring-shaped metal contact piece having a diameter smaller than the diameter of the negative electrode 17c. The negative electrode 15 is fixed to the dry cell holder 11. With such a configuration, the first battery chamber 12
When the batteries 10a and 10b are correctly loaded into the battery, the circumference of the ring-shaped negative electrode contact piece 31 and the negative electrode 17 of the dry battery 10b are
c near the outer edge of the battery 10b and the negative electrode 17c of the dry battery 10b.
Are connected to the circuit via the conductive plate 33.

On the other hand, as shown in FIG.
If the battery 10b is incorrectly loaded in the opposite direction,
The convex portion 17b of the positive electrode 17a of the dry battery 10b enters the central portion of the ring-shaped negative electrode contact piece 31, contacts only the insulator 32, and does not contact the negative electrode contact piece 31. Therefore, the positive electrode 17a of the erroneously loaded dry battery 10b is not connected to the circuit. As a result, accidents such as damage to the electric circuit and rupture of the dry battery 10b due to erroneous loading of the dry battery 10b can be reliably prevented.

The above-mentioned negative electrode contact piece 31 is not limited to a ring shape, but may have any shape as long as it has a space at the center and contacts the vicinity of the outer edge of the negative electrode of the dry battery. The insulator at the center of the negative electrode contact piece may not be provided unless the positive electrode of the erroneously loaded dry battery contacts the negative electrode contact piece. Further, the negative electrode portion 15 may be movable so as to absorb a dimensional error of the dry battery.

On the other hand, the second battery chamber 13 of the dry battery holder 11
The positive electrode portions 35 and 36 and the negative electrode portions 37 and 38 that are in contact with the dry batteries 10c and 10d housed in the first battery compartment also have the same structure as the above-described respective electrode portions of the first battery chamber to prevent accidents due to erroneous loading. However, these electrodes are housed side by side with one dry battery, so the dimensional error of the dry battery is only one, and the elasticity of each contact piece without moving the electrode in particular Absorbs dimensional errors.

Such a dry battery holder can be used not only for the above-described electronic camera with a printer but also for various electric devices requiring a battery. Further, in the above-described embodiment, the AA type dry battery is taken as the dry battery,
The same is applicable to each of the AA batteries.

[0027]

As described above, in the present invention, the first
A positive electrode contact portion that contacts the positive electrode of the dry battery, and a negative electrode contact portion that contacts the negative electrode of the second battery. The negative electrode of the first dry battery and the positive electrode of the second battery are brought into direct contact with each other. In a dry battery holder for holding two dry batteries in a straight line by connecting them in series, the positive electrode contact portion is an insulator having a hole into which a convex portion of the positive electrode of the dry battery enters, and the positive electrode provided at the bottom of the hole. And a positive contact piece that comes into contact with
The negative electrode contact portion is in contact with an insulator having a diameter larger than a diameter of at least a convex portion of the positive electrode of the dry battery provided at the center portion, and a portion provided outside the insulator and near an outer edge of the negative electrode. It is composed of a negative electrode contact piece and at least one of the positive electrode contact part and the negative electrode contact part is movably urged in the direction of pressing against the positive electrode or the negative electrode, thereby preventing contact failure and breakage of the contact part. Thus, it is possible to provide a dry battery holder of two serially loaded types, which can achieve good conduction and prevent an accident when the dry batteries are incorrectly loaded.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a positive electrode contact portion of a dry battery holder of the present invention.

FIG. 2 is a perspective view showing an electronic camera with a printer equipped with the dry battery holder of the present invention.

FIG. 3 is a plan view showing a dry battery holder of the present invention.

FIG. 4 is an explanatory diagram showing a positive electrode contact portion when a dry battery is incorrectly loaded.

FIG. 5 is an explanatory view showing a negative electrode contact portion of the dry battery holder of the present invention.

FIG. 6 is an explanatory diagram showing a negative electrode contact portion when a dry battery is incorrectly loaded.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Dry battery 11 Dry battery holder 12 1st battery compartment 14 Positive electrode part 15 Negative electrode part 22 Moving plate 25 Insulator 26 Positive contact piece

Claims (1)

[Claims] 1. A battery according to claim 1, further comprising: a positive electrode contact portion in contact with the positive electrode of the first dry battery; and a negative electrode contact portion in contact with the negative electrode of the second battery, wherein the negative electrode of the first dry battery and the positive electrode of the second battery are connected to each other. In direct contact with each other to hold these two dry batteries in series and in a straight line, wherein the positive contact portion is an insulator having a hole into which the convex portion of the positive electrode of the dry battery enters, and a bottom portion of the hole. Provided, a positive electrode contact piece that comes into contact with the positive electrode, and the negative electrode contact portion, an insulator having a diameter larger than a diameter of at least a convex portion of the positive electrode of the dry battery provided in the center portion. A negative electrode contact piece provided outside the insulator and in contact with the outer edge of the negative electrode, and at least one of the positive electrode contact portion and the negative electrode contact portion is connected to the positive electrode or the negative electrode. It is noted that the actuator was biased to be movable in the pressing direction. Battery holder for the.