JPH0545951U - Power cord - Google Patents

Abstract

(57) [Summary] [Purpose] In a power cord with a plug of a device that is turned on all day long, the plug inserted at the time of installation, etc. without changing the main body of the device Provide a power cord that can be securely inserted so that it will not come off from the main unit. In a power cord having a plug detachably attached to an inlet of a device body, a fixing linear member having a tightening portion is provided on the plug, and an end portion of the fixing linear member is attached to the device body. The power cord or the plug is integrally provided with a fixing member having a tightening portion, and the fixing member is fixed to the inlet of the device main body. A power cord characterized in that it is configured to be fixed using a fixing screw.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a power cord having a plug that is connected by being inserted into a mounting portion of an electronic device, and particularly to a power cord that prevents the above-mentioned plug from being unintentionally removed from the mounting portion.

[0002]

[Prior Art]

 The power cords of electronic devices (hereinafter, also simply referred to as “devices”) may be connected to each other by being soldered into the device body or may be detachable. In recent years, the connection of the power cord of a facsimile machine has been often performed by using a detachable plug-type power cord because of improvement in serviceability, productivity, and design restrictions. Regarding this, for example, the description in "Electronic Information and Communication Handbook" edited by The Institute of Electronics, Information and Communication Engineers (Ohmsha, 1988), Vol. 36, Part 3 can be referred to.

[0003]

[Problems to be solved by the device]

 By the way, since a facsimile apparatus is often set to be receivable even at night, it is often turned on all day. Therefore, in most cases, once a fax machine is set, it is unlikely that you will be able to look at its power cord, and even if it is unplugged, as long as no specific problems are seen. , Users rarely notice this. However, if it is used for a long time in such a state, it may cause a malfunction of the system and may cause a heat generation and a fire due to an increase in contact resistance. The present invention has been made in view of the above circumstances, and a first object thereof is to solve the above-described problems in the conventional technology and to provide a power cord with a plug of a device that is turned on all day, The purpose of the present invention is to provide a power cord that can be securely inserted so that the plug inserted at the time of installation does not come off from the main body of the device. A second object of the present invention is to provide the above-mentioned power cord that can be easily adopted without any modification or the like on the device body.

[0004]

[Means for Solving the Problems]

 The above-described object of the present invention is to provide a power cord having a plug detachably attached to an inlet of a device body, wherein a fixing linear member having a tightening portion is provided on the plug, and the fixing linear member is provided. The end portion is configured to be fixed by using an inlet fixing screw of the main body of the device, or the power cord or the plug is integrally provided with a fixing member having a tightening portion. This is achieved by a power cord characterized in that the member is configured to be fixed using an inlet fixing screw of the device body.

[0005]

[Action]

 In the power cord according to the present invention, when the device is installed, the plug of the power cord can be fixed to the inlet portion of the device body with the screw, so that the power source can be installed without any modification to the device body. It can be securely attached so that the plug part of the cord does not come off from the device body.

[0006]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view (a) and a front view (b) of a female plug of a power cord with a plug according to an embodiment of the present invention, which is inserted into a device body side. Further, FIG. 2 is a diagram showing an overall configuration of a conventional general power cord with a plug shown for reference, where (a) is a left side view, (b) is a front view, and (c) is a right side. It is a side view. In FIG. 2, reference numeral 1a denotes a female plug inserted into the device side, 2 denotes a cord, and 3 denotes a male plug used by being inserted into an outlet provided on a wall or the like. As can be seen from this example, the conventional female plug 1a has only a portion (hereinafter, referred to as a "knob portion") to be gripped when it is inserted into the power supply side of the device, and the plug and the device body are fixed to each other. Not considered. On the other hand, in the female plug 1 of this embodiment shown in FIG. 1, wire rods 4a and 4b are arranged above and below or to the left and right of the knob portion, and the Y-shaped terminals 5a and 5b are provided at the tip of each wire rod. Are fixed by a caulking member. FIG. 3 is a view showing a state in which the female plug 1 shown in FIG. 1 is inserted into the power source side of the device and set, in which the left side (A side) is the inside of the device and the right side (B side) is the outside side. Hit In the figure, 9 indicates an inlet provided on the device side, and 8a and 8b indicate screws for fixing the inlet 9 to the device body.

When the female plug 1 according to the present embodiment is attached to a device, the female plug 1 is inserted into the inlet 9, and then the screw 8a (or 8b) is loosened and the above-mentioned wire rod 4a (or 4b) is loosened. Insert the Y-type terminal 5a (or 5b) at the tip of the and tighten the screw, then loosen the other screw, similarly insert the Y-type terminal, and tighten the screw. By the above-mentioned operation, the female plug 1 can be fixed to the main body of the device, and in normal operation, it becomes possible to prevent the power cord from coming off. FIG. 4 is a wiring diagram in the above-mentioned connected state, and the wiring destination of the wire rods 4a and 4b is FG. By tightening the Y-shaped terminals 5a, 5b at the tips of the wire rods 4a, 4b on the device body with screws, the contact resistance of the plug itself can be reduced, grounding can be strengthened, and the reliability of the device itself is improved. It is needless to say that the Y-shaped terminals 5a and 5b added to the wire rods 4a and 4b shown in the above embodiment can be changed to other shapes such as round terminals. .. FIG. 5 shows another embodiment of the present invention, in which the wire rods 4a and 4b are removed from the female plug 1 of the embodiment shown in FIGS. That is, in the female plug 10 shown in this embodiment, the female plug body itself is provided with screw holes 11a and 11b for fastening to a device. FIG. 6 shows a mounting situation of the female plug of this embodiment.

Also according to the female plug 10 shown in this embodiment, the female plug can be fixed to the main body of the device by using the screws 12a and 12b, and it is possible to prevent the power cord from coming off during normal operation. The effect is obtained. It should be noted that the screw holes 11a and 11b provided in the female plug 10 shown in the above-described embodiment are effective in having elongated holes because there are various shapes (sizes) of the inlet 9 which is a mounting partner. .. It is needless to say that the above embodiment is an example of the present invention and the present invention should not be limited to this. By the way, in recent years, with the spread of electronic devices and home appliances, the number of offices and homes has increased to 3P, but some of them also use 2P outlets. Therefore, although the standard power cords for electronic devices and home appliances are 3P male plugs, they also needed to be compatible with 2P outlets. Conventionally, a 3P male plug was used as a standard, and a 3P → 2P conversion adapter was prepared when used with a 2P concentrator. According to this method, in the case of a 3P outlet, it can be used as it is, and it suffices to use the attached adapter only in the case of a 3P outlet.

However, in the above-mentioned method, 3P is good, but in 2P, since a 3P → 2P conversion adapter is used, contact failure is likely to occur, and there is only a problem in reliability and safety. Not only that, but it also increased costs. Here, the improvement plan for this is shown. FIG. 7 is a side view (a) and a top view (showing a structure of a male plug 20 of a power cord for an electronic device, which realizes 3P → 2P conversion as an applied technology of the present invention by a simple operation and at low cost. It is b) and a front view (c). For reference, FIG. 8 shows the structure of a conventional 3P → 2P conversion adapter. 8A is a left side view, FIG. 8B is a side view, and FIG. 8C is a right side view. In the figure, 21 is an adapter main body, and 22 is a ground wire. Insert this adapter into which a 3P male plug is inserted from the right side of the drawing into a 2P outlet, and connect the ground wire 22 to the ground on the proper side. It is a thing. The improved male plug 20 shown in FIG. 7 is characterized in that the FG pin 23 is screwed into the plug body, and a part of the FG pin 23 is cut out for drawing out a ground wire, which will be described later.

If the outlet is 3P, it can be used as it is in the state shown in FIG. 7. If the contact is 2P, first loosen the screw to remove the FG pin 23, and then as shown in FIG. An FG line unit 25 having a Y-type terminal 24 attached to the tip thereof is attached here with a screw 26. After inserting the male plug 20 into the 2P outlet, the connection of the ground wire is performed as in the conventional case. Since the conversion from 3P to 2P can be performed by such a simple operation, it is not necessary to prepare an adapter as in the conventional case, and the cost can be reduced. It is needless to say that the Y-shaped terminal 24 added to the FG line unit 25 can be changed to another shape such as a round terminal. Although not mentioned in the above description, each of the plugs shown in the above embodiments and application examples is an example in which a three-core power cord is used as an example. It goes without saying that it is also applicable to the case of a core power cord.

[0011]

[Effect of the device]

 As described above in detail, according to the present invention, in a power cord with a plug of a device that is turned on all day, it is inserted at the time of installation without any modification to the device body. This has the remarkable effect of realizing a power cord that can be securely inserted so that the plug will not come off from the device body.

[0012]

[Brief description of drawings]

FIG. 1 is a diagram showing a structure of a female plug of a power cord with a plug according to an embodiment of the present invention.

FIG. 2 is a diagram showing an overall configuration of a conventional general power cord with a plug.

FIG. 3 is a diagram showing a state in which the female plug shown in FIG. 1 is inserted into a power source side of a device and set.

FIG. 4 is a wiring diagram in the connection state shown in FIG.

FIG. 5 is a view showing the structure of a female plug which is another embodiment of the present invention.

FIG. 6 is a diagram showing a state in which the female plug shown in FIG. 5 is inserted into the power source side of the device and set.

FIG. 7 is a diagram showing the structure of a 3P → 2P conversion male plug as an applied technology of the present invention when used as a 3P outlet.

FIG. 8 is a diagram showing a structure of a conventional 3P → 2P conversion adapter.

9 is a diagram showing the structure of the male plug shown in FIG. 7 when used for a 2P outlet.

[Explanation of symbols]

1, 10: female plug, 4a, 4b: wire rod, 5a, 5
b, 24: Y type terminal, 8a, 8b, 26: screw, 9: inlet, 11a, 11b: screw hole, 20: male plug, 23: FG pin, 25: FG line unit.

Claims (3)

[Scope of utility model registration request] 1. A power cord having a plug detachably attached to an inlet of a device body, wherein a fixing linear member having a tightening portion is provided on the plug, and an end portion of the fixing linear member is provided. A power cord characterized in that it is configured to be fixed using an inlet fixing screw of the device body. 2. The power cord according to claim 1, wherein the other end of the fixing linear member is electrically connected to the FG line in the power cord. 3. A power cord having a plug detachably attached to an inlet of a device body, wherein the plug is integrally provided with a fixing member having a tightening portion, and the fixing member is attached to the device body. A power cord characterized by being fixed using an inlet fixing screw.