JP3280454B2 - Battery unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compact battery unit used as a power source for portable equipment such as a film unit with a lens.

[0002]

[Prior Art] The applicant has a film unit with a lens "Sharun Hi" (trade name) and a film unit with a built-in strobe "Sharun Flash" so that you can easily enjoy photography at any time. , "Sharp Run Panorama Flash" (product name), etc. are widely marketed. Such a film unit with a lens is, for example, as disclosed in Japanese Patent Publication No. 2-32615, in which a photographic film is built in a unit body having a simple photographing mechanism in advance. In the same manner as described above, the DPE can be requested for each film unit.

[0003] A film unit with a built-in strobe and a lens is further provided with a battery for supplying power to the strobe device.
A single AA alkaline battery is used. The AA alkaline battery is widely used as a power supply battery in various portable devices, and is easily available at low cost and is easy to handle.

[0004]

However, as a power supply battery for a film unit with a built-in strobe type lens, a single AA alkaline battery described above is likely to have an insufficient power supply per unit time. I mean,
This is because it takes about 6 seconds at the first time and 7.5 seconds at the 30th time to fully charge the main capacitor for flash emission prior to flash photography, and in many cases a shutter chance is missed.

[0005] Further, in consideration of incorporating a simple auto-focusing device or a film winder device in order to improve the function of a film unit with a lens, power supply shortage is not possible with a single AA alkaline battery. Clearly, its practical use is extremely difficult. It should be noted that if two or more AA alkaline batteries are incorporated, such a problem can be solved. However, the space for assembling the batteries is increased, and the compactness, which is an inherent feature of the film unit with a lens, is impaired.

The present invention has been made in view of the above circumstances, and has been made to increase the power supply amount per unit time and to reduce the battery storage space to one AA battery . May be misused with AA batteries
It is intended to provide a battery unit having no battery.

[0007]

According to the present invention, in order to achieve the above object, two batteries having a rated output voltage of 1.5 V, the same diameter as that of an AA battery, and a length of 25 ± 2 mm are connected in series. These batteries were integrally covered with a shrink film to form one battery unit.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 shows the appearance of a film unit with a lens using the battery unit of the present invention. The unit main body 10 is mainly made of plastic, incorporates a simple photographing mechanism and a strobe, and is loaded with a 135 film with a cartridge in advance so that the user cannot take it out. The unit main body 10 is used while being covered with a paper box 11 having an outer surface printed thereon to clean the appearance. For this reason, the paper box 11 is provided with an opening for exposing the photographing lens 12, the viewfinder 13, the shutter button 14, the film winding knob 15, the film counter window 16, the strobe light emitting portion 17, the strobe charging switch 18 and the like to the outside. ing.

FIG. 4 shows a state where the bottom plate of the unit main body 10 is removed. The unit main body 10 includes a film roll chamber 20 for storing a photo film in a roll shape,
A patrone room 21 for accommodating a patrone is provided. Next to the film roll chamber 20, there is a strobe device 2
2, a film roll chamber 20 and a patrone chamber 2
An exposure chamber 23 for exposing a photographic film is formed between the exposure chamber 1 and the exposure chamber 1. A battery chamber 26 for accommodating a battery unit 25 for strobe light emission is formed below the exposure chamber 23.

In the battery chamber 26, a strobe device 22 is provided.
A part of the substrate 27 is arranged so as to protrude therefrom. The anode terminal 3 of the battery unit 25 is provided on the substrate 27 in the battery chamber 26.
An anode contact piece 32 that contacts the negative electrode 0 and a cathode contact piece 33 that contacts the cathode terminal 31 are provided.

As shown in FIGS. 1 and 2, the battery unit 25 includes two batteries 40 and 50 arranged in series. The battery 40 has a protrusion 4 on the front end face 41.
2. A concave portion 44 having the same internal shape as the outer shape of the protrusion 42 is formed on the rear end surface 43, and the anode 46 is formed on the front end surface 41, the protrusion 42, and the peripheral surface 45, and the cathode 4 is formed on the rear end surface 43 and the recess 44.
7 are arranged. The rated output voltage of the battery 40 is 1.
It is preferable that the length H is 25 ± 2 mm and the diameter D is about 14.05 ± 0.15 mm, which is the same as that of the AA alkaline battery. Since the battery 50 has the same configuration, only the reference numeral is given.

The two batteries 40, 50 are integrally connected by fitting the protrusion 52 of the battery 50 into the recess 44 of the battery 40, and the anode of the battery unit 25 is mounted on the peripheral surface 45 of the battery 40. The cathode terminal 31 is provided on the terminal 30 and the rear end face 53 of the battery 50. And two batteries 40, 50
Is integrally covered with a shrink film 60 that exposes only the anode terminal 30 and the cathode terminal 31 and contracts when irradiated with ultraviolet rays. The shrink film 6
The thickness of 0 is preferably about 100 μm, and a heat-shrinkable shrink film may be used for the same purpose.

FIG. 5 is a graph showing the charging characteristics of the battery unit having the above-mentioned structure, and is a graph showing the charging time from the start of the strobe charging operation to the completion of charging. After charging was completed, the strobe was fired to return to an uncharged state, and the next measurement was performed after a pause. The measurement interval at this time was a total of 30 seconds for the charge time and the pause time. I made it. For comparison, in addition to a single AA alkaline battery, which is a conventional power battery,
Also shown are the measurement results when various batteries having a rated output voltage of 1.5 V and different lengths were connected in series. The strobe device used for the measurement was a conventional AA alkaline battery 1
For 1.5V only in the case of a book, 3
The one for V was used. Also, "1/3" battery and "2/3"
The battery indicates that its length is 1/3 and 2/3 times that of an AA alkaline battery.

The shorter the time required for charging during flash photography, the better. Therefore, in FIG. 5, the lower the characteristic graph is, the better the charging performance is, and in order to improve the charging performance as compared with the conventional one, the graph is smaller than that of a single AA alkaline battery. It is necessary to select a battery whose characteristic graph is located lower. "1/3" batteries and 2 in which the length when connected in series is shorter than that of one conventional AA alkaline battery.
In the case of a 2.5 mm battery, the initial charging time is almost the same as that of the conventional battery, but the required time is rapidly increased as the number of times of charging is increased, and it can be said that the charging performance is inferior to the conventional battery. On the other hand, AA batteries, AAA batteries, "2/3" batteries,
And the 27.5 mm battery, the characteristic graph is always lower than the characteristic graph of the conventional battery, and it can be said that the charging performance is superior to the conventional battery. However, when these are connected in series, the length becomes much longer than that of one AA alkaline battery, and it becomes impossible to store them in the unit main body 10. It is not suitable as a power supply battery to be used.

Next, the operation of the present invention will be described. When assembling the unit body 10, the battery unit 25 is inserted into the battery chamber 26. At this time, since the two batteries 40 and 50 constituting the battery unit 25 are integrally coated with the shrink film 60, they can be easily inserted into the battery chamber 26 as in the case of handling one battery. can do. In the battery unit 25, the anode terminal 30 is provided on the peripheral surface of the battery, and the anode contact piece 3 in the battery chamber 26 is provided.
2 is also provided so as to be in contact with the peripheral surface of the battery, so that an AA battery having a similar outer shape is not erroneously inserted. Similarly, there is no possibility that the battery unit 25 is erroneously inserted into a film unit with a lens using an AA battery.

When a photographer purchases a film unit with a lens having a built-in strobe and takes a picture, he or she first performs a shutter operation by rotating the film winding knob 15 until the rotation of the film winding knob 15 is locked. Prepare.

When performing flash photography, a flash charging switch 18 provided on the front surface of the film unit with a lens is pressed to charge the main capacitor for flash emission. At this time, since the battery unit 25 has the batteries 40 and 50 having the rated output voltage of 1.5 V connected in series, power is supplied from the battery unit 25 at the voltage of 3.0 V. Then, the blinking cycle of the neon lamp for notifying the charging status is shortened, and the charging is completed when the neon lamp changes to lighting. After the charging is completed, the subject is framed to an appropriate position through the viewfinder 13 and the shutter button 14 is operated. In response to the shutter release, the strobe light emitting section 17 emits light, and is exposed on the photographing screen on the photo film.

When one photographing operation is completed, the film winding knob 15 is operated to wind the exposed photographic film toward the cartridge room 21. When the sprocket, which rotates following the feed of the photo film, detects one frame fixed length feed,
The film winding knob 15 is locked, indicating that the next photographing preparation is completed. Then, shooting can be performed again.

During use or in the manufacturing process of the lens-fitted film unit, the battery unit 25 may be subjected to vibration or impact. However, the two batteries 40 and 50 constituting the battery unit 25 are not
Since the projections 52 of the battery 50 are fitted and integrated into the battery 4, the contact surface between the batteries does not slide or bend at the contact portion. Further, since the two integrated batteries 40 and 50 are covered with the shrink film 60, the fitting between the batteries becomes shallow and no gap is formed in the contact surface. Therefore, the contact between the batteries is not interrupted, and stable power supply is always performed from the battery unit 25.

The exposure is repeated as described above, and when "0" appears in the film counter window 16 for displaying the number of remaining films, all frames have been shot. Then, bring the entire film unit with the lens to the developing dealer and request the DPE.
Print processing is performed, and a print photograph can be obtained.

Next, another embodiment of a method for connecting two batteries will be described with reference to FIGS. In the battery unit 65 of this embodiment, two batteries 70 and 80 are integrated by screwing, the anode terminal 66 and the cathode terminal 67 are exposed, and the battery unit 65 is packaged with a shrink film 68. The battery 70 has a male screw 72 on a front end face 71 and a rear end face 73
A female screw 74 having the same inner diameter as the outer diameter of the male screw 72 is formed. An anode 76 is provided on the front end surface 71, the male screw 72, and the peripheral surface 75, and a cathode 7 is provided on the rear end surface 73 and the female screw 74.
7 are arranged. Also, since the battery 80 has the same configuration, only the reference numeral is given.

The two batteries 70, 80 are connected to the female screw 74 of the battery 70 arranged on the front side and the battery 8 arranged on the rear side.
The 0 male screw 82 is screwed in to integrate. According to this embodiment, since the two batteries 70 and 80 are engaged with a pair of screws, not only is it possible to prevent the contact surface between the batteries from skidding or bending between the batteries, but also from As long as the screws are not rotated in the directions to loosen each other, the two batteries 70 and 80 can be more reliably brought into contact without tightening between the batteries and forming a gap in the contact surface.

The battery unit 85 shown in FIG. 8 is formed by connecting a battery 86 having a concave shape and a battery 87 having a convex shape in series and wrapping the battery 86 with a shrink film 88.
In this example, after the two batteries are connected, the battery becomes a single tubular shape with no irregularities on the outer periphery, so that the shrink film is in close contact with the entire outer peripheral surface, and the packaging can be performed neatly.

The battery unit 90 shown in FIG. 9 has two batteries 91 and 92 having flat front and rear end faces, which are arranged in series. In this example, since the two batteries are only brought into surface contact with each other, the connection process is facilitated. Further, since the two batteries after connection are in contact with each other without any gap on the entire rear end face or front end face, they can be sufficiently fixed only by the contraction force of the shrink film without being integrated by fitting.

[0025]

As described above, according to the present invention, the rated output voltage is 1.5 V, the diameter is the same as that of AA batteries, and the length is 25 ± 2 m.
Since two m batteries are connected in series, the amount of power supply per unit time can be doubled. Even if these batteries are connected in series, their size is almost the same as one AA battery, and a compact battery unit can be constructed. Further, since the two batteries are integrally connected in series and then covered with the shrink film, it is possible to prevent a gap from being formed in the contact surface between the batteries and to perform stable power supply. In addition, the negative electrode of the battery unit is
Although common, the positive electrode is in a different position from AA batteries.
AA type even if the external shape is the same
Misuse with batteries can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a sectional view of a battery unit of the present invention.

FIG. 2 is a perspective view of a battery constituting the battery unit shown in FIG.

FIG. 3 is an external perspective view of a film unit with a lens including the battery unit shown in FIG. 1;

4 is a bottom view of the film unit with lens shown in FIG. 3 with a bottom plate removed.

FIG. 5 is a graph showing the relationship between the number of times of repetitive charging of the battery unit shown in FIG. 1 and the charging time.

FIG. 6 is a sectional view showing a second embodiment of the battery unit.

FIG. 7 is a perspective view of a battery constituting the battery unit shown in FIG.

FIG. 8 is a sectional view showing a third embodiment of the battery unit.

FIG. 9 is a sectional view showing a fourth embodiment of the battery unit.

[Explanation of symbols]

25, 65, 85, 90 Battery unit 30, 66 Anode terminal 31, 67 Cathode terminal 40, 50, 70, 80, 86, 87, 91, 92 Battery 55, 68, 88, 93 Shrink film D Diameter H Length

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tsutomu Kimura 3-13-45 Izumi, Asaka-shi, Saitama Fuji Photo Film Co., Ltd. (72) Masaaki Kurimura 2-18 Keihanhondori Moriguchi-shi, Osaka Sanyo Excel (72) Inventor Takahiro Furusawa 2-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Shigehiro Nakaido 1-1-10 Ueno, Taito-ku, Tokyo Sanyo Electric Co., Ltd. ( 56) References JP-A-6-266055 (JP, A) JP-A-61-87461 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01M 2/10 H01M 2/02 H01M 6/42

Claims (1)

(57) [Claims] 1. A length with the same diameter as AA batteries rated output voltage is 1.5V is two serially connected batteries 25 ± 2 mm, the outer shape and integrally covered these batteries in shrink film Same as AA battery , cathode is AA battery
And the anode is in a different position from the AA battery.
Each electrode is exposed from the shrink film
Cell unit is characterized in that is.