JP2003059473A - Polarity display method for dc power source - Google Patents

Abstract

PROBLEM TO BE SOLVED: To clearly display the polarity of a DC power source such as a dry battery even in a part having almost no margin. SOLUTION: In an electrical apparatus using a DC power source, the positive polarity of the DC power source is displayed with the head of a cross-recessed head screw. In the electrical apparatus using the DC power source, the negative polarity of the DC power source is displayed with the head of a slotted head screw. In the polarity display method in which the positive polarity of the DC power source used in the electrical apparatus is displayed with the head of the cross-recessed head screw and the negative polarity is displayed with the head of the slotted head screw, the head of the cross-recessed head screw is made different from the head of the slotted head screw in size.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for indicating the polarity of a DC power source in an electric device using a DC power source such as a dry battery.

[0002]

2. Description of the Related Art Polarity indications in a battery housing, which is a conventional DC power source, can be engraved in a narrow area of a battery terminal or attached with a small label due to space restrictions and the like due to miniaturization of electric equipment. It was displayed in a place away from the battery.

[0003]

However, according to the prior art, since the polarity (direction) of the battery is to be displayed in a space-free area, the marking display is small and the hue does not change. hard. In addition, when a label is attached, the display is easier to see than the engraving due to the printing color, but it is difficult to see because the label is small, and it costs too much. Further, when the display is made at a place away from the battery, there is a space and the display itself is easy to see, but it is difficult to intuitively understand depending on the viewing angle of the user, and the design is not preferable. These problems become more prominent as the size of the battery and the battery accommodating section is made smaller, as well as the size of the main body of the electric device.

If these indications are not transmitted to the user and the polarity of the DC power source is wrong, that is, if the battery is installed in the opposite direction, the circuit of the electric device may be damaged, or the battery terminal or the battery housing part may be damaged. Unreasonable force may be applied, causing deformation and subsequent loss of performance.

An object of the present invention is to improve the polarity display of a DC power source such as a dry battery even in a space-free area.

[0006]

In order to solve the above-mentioned problems, the present invention provides an electric device using a DC power supply,
The positive polarity of the DC power source is indicated by the head of the screw with a cross hole.

Further, in an electric device using a direct current power source, the negative polarity of the direct current power source is indicated by the head of the slotted screw.

In addition, in the method of indicating the polarity of a DC power source in which the positive polarity of the DC power source used in electric equipment is displayed by the head of the cross-shaped screw and the negative polarity is displayed by the head of the slotted screw, The size of the head of the cross-headed screw and the size of the head of the slotted screw were made different.

In addition, in the method for indicating the polarity of a DC power source, in which the positive polarity of the DC power source used for electric equipment is displayed by the head of the cross-shaped screw and the negative polarity is displayed by the head of the slotted screw, The heads of the cross-headed screw and the head of the slotted screw were made different in color.

Further, by making the material of the cross-shaped screw and the material of the slotted screw different, the color of the head of the cross-shaped screw and the head of the slotted screw are made different. .

Further, the DC power source is a battery, and the positive electrode terminal member is attached with the screw having the cross hole.

Further, the DC power source is a battery, and the negative terminal member is attached with the slotted screws.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1A is a front view showing a digital camera which is a first embodiment of the present invention, and FIG.
Is a side view thereof. The digital camera 1 is provided with a battery housing 2 for housing four dry batteries D1, D2, D3, D4 and a battery lid 3. Dry batteries D1, D2, D3, D4
Is inserted into the battery compartment 2 from the bottom of the digital camera 1 provided with the battery lid 3. On the back side of the battery cover 3,
First conductive plate 4 has cross hole screw 4a and sliding screw 4b
The second conductive plate 5 is fixed by means of a cross hole screw 5a and a slide screw 5b. Battery lid 3
When closed, the positive electrode of the dry battery D1 and the negative electrode of the dry battery D2 are electrically connected by the first conductive plate 4, and the positive electrode of the dry battery D3 and the negative electrode of the dry battery D4 are electrically connected by the second conductive plate 5. It should be noted that the illustration and description of the conductive plate that connects the positive electrode of the dry battery D2 and the negative electrode of the dry battery D3, the negative terminal plate that contacts the negative electrode of the dry battery D1, and the positive terminal plate that contacts the positive electrode of the dry battery 4 will be omitted.

As shown in the figure, the head of the screw 4a with a cross hole instructs the user to insert the dry battery D1 into the battery housing 2 so that the positive terminal is on the side of the battery lid 4, and the screw 4b with a slot is provided. The head of the user instructs the user to insert the dry battery D2 into the battery housing portion 2 so that the negative terminal is on the battery lid 4 side. Similarly, the head of the cross-shaped screw 5a instructs the user to insert the dry battery D3 into the battery housing 2 so that the positive terminal is on the side of the battery lid 4, and
At the head of b, the user is instructed to insert the dry battery D4 into the battery accommodating portion 2 such that the negative terminal is on the battery lid 4 side. That is, simply by devising the screw heads originally required to attach the conductive plates 4 and 5 to the battery lid 3,
The polarity of the dry battery is easily displayed.

FIG. 2 is a front view showing a battery housing portion of an electric device according to a second embodiment of the present invention. The battery storage unit 11 stores four dry batteries D11, D12, D13, and D14. The conductive plate 12 is fixed to the battery housing portion 11 by means of a screw 12a having a cross hole and a screw 12b having a slot.
The positive electrode of 11 and the negative electrode of the battery D12 are electrically connected. The conductive plate 13 is fixed to the battery housing portion 11 by the cross-shaped screw 13a and the slotted screw 13b, and the battery D
The positive electrode of 12 and the negative electrode of the battery D13 are electrically connected. The conductive plate 14 is fixed to the battery housing portion 11 by means of a screw 14a having a cross hole and a screw 14b having a slot.
The positive electrode of 13 and the negative electrode of the battery D14 are electrically connected. The negative terminal plate 15 that contacts the dry battery D11 is fixed to the battery housing portion 11 by the slotted screw 15b, and the positive terminal plate 16 that contacts the dry battery D14 is fixed to the battery housing portion 11 by the cross hole screw 16a. There is.

FIG. 3 is a sectional view of AA 'shown in FIG. 2, in which the positive electrode of the battery D11 is in contact with the conductive plate 12 and the negative electrode of the battery D11 is in contact with the negative terminal plate 15. Indicates.

As shown in FIGS. 2 and 3, a screw having a cross hole 1
The head of 2a contacts the positive electrode of the battery D11 with the conductive plate 12, and the head of the slotted screw 15b contacts the battery D1.
The user is instructed to insert the battery D11 so that the negative electrode of No. 1 contacts the negative terminal plate 15.
Similarly, the head of the cross-threaded screw 13a contacts the positive electrode of the battery D12 with the conductive plate 13, and the head of the slotted screw 12b connects the negative electrode of the battery D12 to the conductive plate 12.
The user is instructed to insert the battery D12 so as to come into contact with. Similarly, the head of the screw 14a with a cross hole is set so that the positive electrode of the battery D13 contacts the conductive plate 14,
The head of the slotted screw 13b instructs the user to insert the battery D13 so that the negative electrode of the battery D13 contacts the conductive plate 13. Similarly, screw with cross hole 1
The head of 6a connects the positive electrode of the battery D14 to the positive terminal plate 1
6, the head of the slotted screw 14b instructs the user to insert the battery D14 so that the negative electrode of the battery D14 contacts the conductive plate 14.

That is, the conductive plates 12, 13, 14 and the minus terminal plate 15 and the plus terminal plate 16 are connected to the battery housing section 1.
Just devise the head of the screw used for attaching to 1.
The polarity of the dry battery is easily displayed. Further, by using the screw which is visible even after the battery is stored, the confirmation after the battery is stored becomes easy.

As for the polarity display of the dry battery, it is not necessary to display both plus and minus because if one of plus and minus is displayed, the polarity of the other is clear. The third and fourth embodiments are based on this idea.

FIG. 4 is a front view showing a battery storage portion of an electric device according to a third embodiment of the present invention. Second shown in FIG.
The same parts as those of the embodiment are designated by the same reference numerals and the description thereof will be omitted. In this embodiment, the slotted screws 12b, 13 for attaching the conductive plates 12, 13, 14 and the negative terminal plate 15 used in the second embodiment to the battery housing portion 11 are used.
b, 14b, and 15b are eliminated, and a cross hole screw 12
Only the positive polarity is displayed on the heads of a, 13a, 14a and 16a. In addition, at the portion where the slotted screw is removed, an adhesive or ultrasonic fusion is used to make the conductive plates 12, 13, 1
4 and the minus terminal plate 15 and the battery housing 11 are joined.

FIG. 5 is a front view showing a battery housing portion of an electric device according to a fourth embodiment of the present invention. Second shown in FIG.
The same parts as those of the embodiment are designated by the same reference numerals and the description thereof will be omitted. In this embodiment, the screws 12 a, 13 a, 1 with cross holes for attaching the conductive plates 12, 13, 14 and the positive terminal plate 16 used in the second embodiment to the battery housing portion 11 are used.
4a and 16a are eliminated and slotted screws 12b and 13
Only the negative polarity is displayed on the heads of b, 14b, and 15b. In the portion where the screw having the cross hole is removed, the conductive plates 12, 13, 14 and the positive terminal plate 16 are joined to the battery housing portion 11 by using an adhesive or ultrasonic fusion.

In the first to fourth embodiments, the electric equipment accommodates four dry batteries, but the present invention is not limited to the number of dry batteries. FIG. 6 is an explanatory view showing a battery housing portion of an electric device according to a fifth embodiment of the present invention. In this embodiment, the number of dry batteries D21 accommodated in the battery housing portion 21 is one, and the positive terminal plate 22 is fixed to the battery housing portion 21 by the screw 22a having a cross hole, and the minus terminal plate 23.
It is fixed to the battery accommodating portion 21 with a slotted screw 23b. The shapes of the positive terminal plate 22 and the negative terminal plate 23 are the same as those of the positive terminal plate 16 and the negative terminal plate 15 of the second embodiment shown in FIGS. 2 and 3, and the description using the cross-sectional views is omitted. To do.

In the fifth embodiment, the diameter of the head of the cross-shaped screw 22a for displaying the positive polarity is made larger than the diameter of the head of the slotted screw 23b for displaying the negative polarity, so that the polarity of the dry battery is increased. The display is made clearer. Further, if the size of the screw hole provided in the battery storage portion 21 is changed according to the diameter of the screw head, it is possible to avoid making a mistake in the screw during manufacturing.

FIG. 7 is an explanatory view showing a battery housing portion of an electric device according to a sixth embodiment of the present invention. In this embodiment, as in the fifth embodiment, the dry battery D housed in the battery housing portion 21.
21 is one, and the positive terminal plate 22 is a screw with a cross hole 2
It is fixed to the battery storage portion 21 by 21a, and the negative terminal plate 23 is fixed to the battery storage portion 21 by the slotted screw 231b. The same parts as those of the fifth embodiment shown in FIG. 6 are designated by the same reference numerals and the description thereof will be omitted.

In the sixth embodiment, contrary to the fifth embodiment, the diameter of the head of the slotted screw 231b for displaying the negative polarity is determined from the diameter of the head of the cross hole screw 221a for displaying the positive polarity. By also increasing the value, the polarity of the dry battery is further clarified. Further, similar to the fifth embodiment, if the size of the screw hole provided in the battery storage portion 21 is changed according to the diameter of the head of the screw, it is possible to avoid making a mistake in the screw during manufacturing.

FIG. 8 is an explanatory view showing a battery housing portion of an electric device according to a seventh embodiment of the present invention. In this embodiment, the number of dry batteries D21 stored in the battery storage portion 21 is one,
The positive terminal plate 22 is fixed to the battery housing portion 21 by a cross hole screw 222a, and the negative terminal plate 23 is fixed to the battery housing portion 21 by a slotted screw 23b. The same parts as those of the fifth embodiment shown in FIG. 6 are designated by the same reference numerals and the description thereof will be omitted.

In the seventh embodiment, the color of the head of the cross-shaped screw 222a for displaying the positive polarity and the color of the head of the sliding screw 23b for displaying the negative polarity are made different from each other.
The polarity display of the dry cell is made clearer. It should be noted that it is not necessary to separately color the means for making the heads of the screws different, and it can be realized by making the materials of the screws different, such as iron and copper, metal and plastic.

Although the first to seventh embodiments of the present invention have been described above, the present invention is a method of displaying the polarity of a DC power supply, and is not limited to the polarity display of a dry battery. Figure 9
FIG. 14 is an explanatory diagram showing a DC power input terminal of an electric device according to an eighth embodiment of the present invention. The DC power supply input terminal 31 is provided in an electric device by a cross hole screw 31a and a slotted screw 31b, and a DC output plug (not shown) of an AC adapter is inserted therein. The head of the cross-shaped screw 31a, the head of the sliding screw 31b, and the symbol 32 printed on the electric device indicate that the center of the DC power supply input terminal 31 has a positive polarity and the periphery has a negative polarity. is doing. Since the cross recessed screw 31a and the slotted screw 31b are originally necessary members for providing a DC power supply input terminal in an electric device,
The space required for polarity display is reduced.

[0029]

According to the present invention, it is possible to improve the polarity indication of a DC power source such as a dry battery even in a portion where there is no space, and it is necessary for sticking a marking or a label. The cost can be reduced. Also, by eliminating the space for markings and labels, it is possible to reduce the size of electrical equipment. Further, the space of the stamp or the label can be used to reinforce the battery housing portion or to strengthen the lock mechanism of the battery lid, and the effect is great.

[Brief description of drawings]

FIG. 1 is a front view and a side view showing a digital camera that is a first embodiment of the present invention.

FIG. 2 is a front view showing a battery storage portion of an electric device according to a second embodiment of the present invention.

FIG. 3 is a cross-sectional view of a main part of a battery storage portion of an electric device that is a second embodiment of the present invention.

FIG. 4 is a front view showing a battery storage portion of an electric device according to a third embodiment of the present invention.

FIG. 5 is a front view showing a battery storage portion of an electric device according to a fourth embodiment of the present invention.

FIG. 6 is an explanatory diagram showing a battery storage portion of an electric device that is a fifth embodiment of the present invention.

FIG. 7 is an explanatory diagram showing a battery storage portion of an electric device according to a sixth embodiment of the present invention.

FIG. 8 is an explanatory diagram showing a battery housing portion of an electric device according to a seventh embodiment of the present invention.

FIG. 9 is an explanatory diagram showing a DC power input terminal of an electric device according to an eighth embodiment of the present invention.

[Explanation of symbols]

2 Battery compartment 3 Battery lid 4 First conductive plate 4a Screw with cross hole 4b slotted screw 5 Second conductive plate 5a cross hole screw 5b slotted screw D1, D2, D3, D4 dry battery

Claims (7)

[Claims] 1. An electric device using a DC power supply,
A method for displaying the polarity of a DC power supply, characterized in that the positive polarity of the DC power supply is displayed by the head of a screw with a cross hole. 2. An electric device using a DC power supply,
A method for displaying the polarity of a DC power supply, characterized in that the negative polarity of the DC power supply is displayed with the head of a slotted screw. 3. A method for indicating the polarity of a DC power source, wherein the positive polarity of a DC power source used in an electric device is indicated by the head of a cross-shaped screw, and the negative polarity is indicated by the head of a slotted screw. A method for indicating the polarity of a DC power supply, characterized in that the head of the cross-headed screw and the head of the slotted screw are made different in size. 4. A method for indicating the polarity of a DC power source, wherein the positive polarity of a DC power source used in an electric device is indicated by the head of a cross-shaped screw and the negative polarity is indicated by the head of a slotted screw. A method for displaying the polarity of a DC power supply, wherein the head of the cross-headed screw and the head of the slotted screw are made different in color. 5. The head of the cross hole screw and the head of the slotted screw are made different by differentiating the material of the cross hole screw and the material of the slotted screw. The method for displaying the polarity of a DC power source according to claim 4, wherein. 6. The polarity display of the DC power source according to claim 1, wherein the DC power source is a battery, and the positive electrode terminal member is attached by the screw having the cross hole. Method. 7. The method for displaying the polarity of a DC power source according to claim 2, wherein the DC power source is a battery, and the negative electrode terminal member is attached with the slotted screw.