JP2012099377A - Power-supply device, ac plug, power-supply device main body, and power-supply device unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress an AC plug from removing from a main body of a power-supply device, to and from which the AC plug can be inserted and removed, due to an incorrect operation or handling by the user.SOLUTION: The power-supply device comprises a plug part including a plug inserted and removed to and from an outlet of an AC power supply and a main body to and from which the plug part can be inserted and removed in a state in which the plug is faced outward. The power-supply device comprises: an engaging portion configured to engage the plug part and the main body when the plug part is inserted into the main body; a release portion configured to release the engaging state between the plug part and the main body by causing a predetermined portion to receive an acting force in a predetermined direction so as to displace the engaging portion; and a covering portion configured to cover the release portion in a state in which the plug portion is inserted into the main body. The covering portion includes a narrow gap extending from outside the covering portion to the predetermined portion, and covers the release portion excluding the narrow gap so as to prohibit access from outside the covering portion to the predetermined portion.

Description

  The present invention relates to a power supply apparatus including a plug portion including a plug that is inserted into and removed from an AC power outlet, and a main body that is configured to be detachable with the plug portion facing outward.

  The AC power outlet and the shape of the AC plug connected to it have different standards depending on the purpose of use and country. For this reason, a power supply device connected to an AC power source, such as an AC adapter, has been developed in which an AC plug and an adapter body can be attached and detached. For example, Patent Document 1 below discloses a detachable AC adapter of a type in which a locking relationship between an AC plug and an adapter body is released by pressing a predetermined release button so that the AC plug can be removed from the adapter body. . When such AC adapters are provided with a plurality of AC plugs, the AC plugs can be replaced according to the purpose of use and the standards of each country while using one adapter body in common, which contributes to resource saving. Also, since anyone can easily attach and detach with a single touch, it is convenient to carry it when traveling continuously to multiple countries with different standards.

  However, in the AC adapter disclosed in Patent Document 1, since the attachment and detachment of the AC plug and the adapter main body are easy, problems may occur. For example, even when the user does not intend to remove the AC plug, the AC plug may be detached from the adapter body due to an erroneous operation such as accidentally touching the release button. Such a problem is not limited to the AC adapter, and is a problem common to power supply devices to which an AC plug can be attached and detached.

JP 2007-280921 A

  In view of at least a part of the above-described problems, the problem to be solved by the present invention is that the AC plug can be detached from the main body of the power supply device due to incorrect operation or handling by the user in the power supply device to which the AC plug can be attached and detached. It is to suppress.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

Application Example 1 A power supply device including a plug portion including a plug that is inserted into and removed from an AC power outlet, and a main body configured to be detachable with the plug facing outward. There,
When the plug portion is attached to the main body, a locking portion for locking the plug portion and the main body,
A release portion that displaces the locking portion by receiving an acting force in a predetermined direction by a predetermined portion, and enables the locking relationship between the plug portion and the main body to be released;
A covering portion that covers the release portion in the mounted state;
The covering portion has a slit that communicates from the outside of the covering portion to the predetermined portion, and the release portion is excluded so that access to the predetermined portion from the outside of the covering portion is impossible except for the slit. Power supply unit covered.

  In the power supply device having such a configuration, in a state where the main body and the plug portion are mounted, the release portion that releases the locking relationship between the plug portion and the main body is covered with the cover portion. This cover part has a slit that leads from the outside of the cover part to a predetermined part that receives an acting force when releasing the locking relationship, and is formed so that access to the predetermined part from other than this slit is not possible. . Therefore, when removing a plug part from a main body, a user needs to access a predetermined site | part via a slit and to apply a predetermined action force. As a result, it is possible to prevent the plug portion from being detached from the main body of the power supply device due to an erroneous operation or handling by the user.

Application Example 2 The power supply device according to Application Example 1, wherein the slit is formed in a shape that cannot reach the predetermined portion from the outside in a straight line.

  In the power supply device having such a configuration, the slit is formed so as not to reach the predetermined portion of the release portion from the outside in a straight line, so that the plug portion is the main body of the power supply device due to an erroneous operation or handling by the user. The effect which suppresses removing from can be improved. For example, even if a child mistakenly inserts a linear pin or the like into a slit, the inserted pin does not reach a predetermined part, so that the plug part may come off the main body of the power supply device against the will of the user. There is no.

Application Example 3 The power supply device according to Application Example 1, wherein the slit is formed in a shape that allows the access only when a non-general-purpose tool is used.

  In the power supply device having such a configuration, the slit can be accessed from the outside to a predetermined portion of the release portion only when a non-general-purpose tool is used. Therefore, if the tool for removing the plug portion is not used, the slit can be removed. I can't do it. Such tools are often managed by a specific person, and are rarely used without intention of removal, so that the plug part may be detached from the main body of the power supply unit due to incorrect operation or handling by the user. The effect of suppressing can be improved.

Application Example 4 The power supply device according to Application Example 1, wherein the slit is formed in a shape that allows the access using a general-purpose tool.

  In the power supply device having such a configuration, the slit can be accessed from the outside to a predetermined portion of the release portion by using a general-purpose tool, so that the plug portion can be removed using the general-purpose tool. Therefore, when the user intends to remove the plug portion, the user can easily remove the plug using the general-purpose tool, and the convenience for the user is improved.

In addition to the power supply device described above, the present invention can also be realized as an AC plug device of Application Example 5, a main body of the power supply device of Application Example 6, a power supply device set of Application Example 7, and the like.
Application Example 5 An AC plug device that includes a plug that can be inserted into and removed from an AC power outlet, and that can be attached to the main body of the power supply device with the plug facing outward, wherein the AC plug device is connected to the power supply device. When the AC plug device and the power supply device main body are locked to each other when the AC plug device and the power supply device main body are attached to the main body of the AC plug device and / or the power supply device main body, A release provided in the main body of the AC plug device and / or the power supply device so as to be disengaged by receiving an acting force on the AC plug device and to release a locking relationship between the AC plug device and the main body of the power supply device. A cover that covers the portion in the mounted state, the cover having a slit that communicates from the outside of the cover to the predetermined site, and excluding the slit, the cover from the outside of the cover It is impossible to access the specified part Covered AC plug device the release unit to so that.

[Application Example 6] A main body of a power supply device configured such that a plug portion having a plug to be inserted into and removed from an AC power outlet is detachable with the plug facing outward, wherein the plug portion is In order to lock the plug portion and the main body of the power supply device when the plug portion is attached to the main body, a predetermined portion of the plug portion and / or the locking portion provided on the main body receives an acting force in a predetermined direction. In the mounted state, the plug portion and / or the release portion provided in the main body of the power supply device are disengaged by the displacement portion so that the locking relationship between the plug portion and the main body of the power supply device can be released. A covering portion that covers the predetermined portion from the outside of the covering portion, and access to the predetermined portion from the outside of the covering portion is impossible except for the slit. The main body of the power supply apparatus which covered the said cancellation | release part so that it might become.

[Application Example 7] A plurality of types of plug portions each having a plug that is inserted into and removed from an AC power supply outlet and having different plug types, and the plurality of types of plug portions all face the plug outward. A power supply device set including a main body configured to be detachable in a state, wherein at least one of the plurality of types of plug parts and the main body is attached to the main body with the at least one plug part When the plug portion and the main body are locked, the predetermined portion receives an acting force in a predetermined direction to displace the locking portion, so that the at least one plug portion and the A release portion capable of releasing the locking relationship with the main body, and a cover portion that covers the release portion in the mounted state, and the cover portion has a slit that leads from the outside of the cover portion to the predetermined portion. Excluding the slit, Power supply set covering the release portion as external access covering portion to the predetermined portion is disabled.

2 is an explanatory diagram showing an external appearance of an AC adapter 20. FIG. FIG. 3 is an explanatory diagram showing a structure of a main body portion 100 that constitutes an AC adapter 20. FIG. 3 is an explanatory diagram showing a structure of a plug unit 200 that constitutes an AC adapter 20. FIG. 3 is a perspective view showing a part of the AC adapter 20 when the main body 100 and the plug part 200 are attached. It is explanatory drawing which shows the method of removing the plug part 200 from the main-body part 100. FIG. It is explanatory drawing which shows the structure of the plug part 400 as 2nd Example. FIG. 6 is a perspective view showing a part of an AC adapter when the main body 100 and the plug 400 are attached. FIG. 6 is an explanatory diagram showing a method of removing the plug part 400 from the main body part 100. It is explanatory drawing which shows the structure of the plug part 600 as 3rd Example. FIG. 6 is an explanatory diagram showing a method of removing the plug portion 600 from the main body portion 100.

Examples of the present invention will be described.
A. First embodiment:
A-1. Configuration of the AC adapter 20:
An external view of an AC adapter 20 as an embodiment of the power supply apparatus of the present invention is shown in FIG. As is well known, the AC adapter 20 is a device that outputs power of a predetermined format by being plugged into an AC power outlet such as a commercial power source. In this embodiment, the AC adapter 20 is an AC-DC adapter that converts an input AC power source into a DC power source having a predetermined voltage and outputs the same. However, an AC-AC adapter intended only for voltage transformation may be used. As shown in FIG. 1, the AC adapter 20 includes a main body portion 100 and a plug portion 200. The main body portion 100 and the plug portion 200 are configured to be detachable. A method for attaching and detaching the main body unit 100 and the plug unit 200 will be described later.

  The structure of the main body 100 is shown in FIG. As shown in FIG. 2, the main body 100 includes a substantially rectangular parallelepiped case 110 and a cable 180 extending from the case 110. Inside the substantially rectangular parallelepiped casing 110, a transformer, a rectifier, and a stabilizing circuit for outputting DC power after converting AC power received from an AC power outlet via the plug unit 200 into a predetermined voltage. Etc. are built-in. One end of the cable 180 is connected to a circuit inside the housing 110 and extends from an extending portion 160 (see FIG. 1) of the housing 110. A connector is provided at the other end of the cable 180 (not shown). The main body 100 is connected to an electronic device that uses DC power via this connector. The main body 100 may include an output terminal or an output connector (for example, a USB connector) instead of the cable 180. The output terminal and the output connector may be configured to be directly connectable to an electronic device, or may be configured to be connectable to a cable.

  A recess 120 is formed at the end of one surface of the housing 110 opposite to the extension 160. Hereinafter, the direction from the side on which the extending portion 160 is formed toward the side on which the recessed portion 120 is formed is also referred to as the recessed portion 120 side, and the direction from the side on which the recessed portion 120 is formed toward the side on which the extending portion 160 is formed. Also referred to as the extension 160 side. When viewed from the recess 120 side, the recess 120 includes recesses 121 and 122 formed such that both sides of the recess 120 are recessed longer toward the extension portion 160 than the center portion. Terminals 131 and 132 are provided in the recesses 121 and 122. These terminals 131 and 132 are connected to the internal circuit of the housing 110. The terminals 131 and 132 are biased outward, and are configured to be displaceable inward when a pressing force is applied inward. Further, grooves 123 and 124 are formed on the side surfaces of the recess 120 on the recesses 121 and 122 side, in which only the lower side is cut out.

  A movable plate 111 is formed on the surface of the housing 110 between the recesses 121 and 122. The movable plate 111 has an end on the concave portion 120 side formed integrally with the housing 110, and other portions are formed separately from the housing 110 by a clearance 112. A locking portion 140 that protrudes outward is formed at a substantially central portion of the movable plate 111. The locking portion 140 has an inclined surface on the concave portion 120 side. The side surface opposite to the inclined surface of the locking portion 140 is formed at an angle substantially orthogonal to the movable plate 111. A release portion 150 that protrudes in the same direction as the locking portion 140 is formed at the end of the movable plate 111 on the extending portion 160 side. The release part 150 is formed at a position protruding from the recesses 121 and 122 to the extension part 160 side.

  The inner side of the movable plate 111 has a cavity, and when a pressing force is applied to the upper surface portion of the release portion 150 from the upper portion to the lower portion, the movable plate 111 has the end portion on the concave portion 120 side as a fulcrum. Displaces downward. At this time, the locking part 140 and the releasing part 150 are also displaced downward by a distance corresponding to the displacement amount of the movable plate 111. When the pressing force is released, the movable plate 111 returns to the original position due to the elasticity of the movable plate 111.

  The structure of the plug part 200 is shown in FIG. As shown in the figure, the plug part 200 includes a housing 210, plugs 221 to 223, and a cover part 240. Two lead plates 231 and 232 projecting outward are formed on the opposite side of the housing 210 from the plugs 221 to 223. The lead plates 231 and 232 are formed in parallel to each other along the direction from the plugs 221 and 222 toward the plug 223. A convex portion 233 protruding outward is formed at the outer end of the lead plate 232. In FIG. 2, only the lead plates 231 and 232 and the convex portion 233 provided on the plug 221 side are shown, but the lead plates 231 and 232 and the convex portion 233 are also formed on the plug 222 side. . Further, a locking plate 234 is formed between the lead plates 231 formed on both sides in this way. In this embodiment, the locking plate 234 is formed integrally with the lead plate 231.

  The plugs 221 to 223 are plugs that are inserted into an AC outlet, and are formed so as to protrude in a direction orthogonal to the housing 110. In this embodiment, the plugs 221 to 223 have a BF type shape. The plugs 221 and 222 are blades. In this embodiment, the plug 223 is a dummy plug for opening the shutter of the AC outlet. However, the plug 223 may be a ground pin. The shape of the plug is not particularly limited, and can be various shapes such as an A type and a C type.

  The cover 240 is formed integrally with the housing 210 at the tip of the housing 210 on the plug 223 side. The cover portion 240 is provided to hide the release portion 150 of the main body portion 100 when the plug portion 200 is attached to the main body portion 100. Specifically, the cover portion 240 is formed in a shape that covers the release portion 150 so that the upper surface portion of the release portion 150 cannot be accessed from the outside, except for a slit 245 described later. In this embodiment, the cover 240 includes a front surface, a side surface, and a flat surface (upper surface) when viewed from the direction from the plug 223 toward the plugs 221 and 222. A hollow portion 242 having a lower opening is formed in the cover portion 240. The front surface of the cover 240 includes an inclined surface 241 that is formed obliquely in a direction from the plug 223 toward the plug 221 along the lower side from the upper side. A lower portion of the inclined surface 241 is cut out to form a cutout portion 243 that is a cutout opening. A hole 244 is formed in the slope 241 at the center of the lower end. The notch 243 and the hole 244 communicate with the cavity 242 inside the cover 240. The hollow portion 242, the cutout portion 243, and the hole portion 244 are collectively referred to as a narrow gap 245. In this embodiment, the notch 243 and the hole 244 which are openings of the slit 245 are formed so that the size of the notch 243 is about 2 mm × 15 mm and the diameter of the hole 244 is about 2 mm. The opening of the slit 245 may be of a size that is small enough that a human fingertip cannot be inserted.

A-2. Mounting method of the plug part 200:
A method for attaching the plug part 200 to the main body part 100 will be described. In mounting the plug part 200 on the main body part 100, first, the plug part 200 is slid in the direction in which the cover part 240 faces the extending part 160 side with the plugs 221 to 223 facing outward, The lead plates 231 and 232 of the plug part 200 are inserted into the recesses 121 and 122 of the part 100. At this time, the convex part 233 of the plug part 200 is inserted into the groove parts 123 and 124 of the main body part 100 and fixes the plug part 200 in the vertical direction (the protruding direction of the plugs 221 to 223). The terminals 131 and 132 are inserted between the lead plate 231 and the lead plate 232.

  Further, when the plug portion 200 is slid toward the extending portion 160, the slope 241 of the plug portion 200 contacts the release portion 150. When the plug part 200 is further slid in this state, the inclined surface 241 applies a pressing force to the release part 150. Since this pressing force generates a downward force component due to the inclination of the slope 241, the movable plate 111 on which the release portion 150 is formed is displaced downward. Thereby, the release part 150 is displaced below the inclined surface 241 and can further slide the plug part 200. When the slide is advanced in this manner, the locking plate 234 of the plug part 200 comes into contact with the locking part 140 of the main body part 100. When the plug part 200 is further slid in this state, the inclined surface of the locking part 140 receives a pressing force for sliding the plug part 200. Since this pressing force generates a downward force component due to the inclined surface, the movable plate 111 on which the locking portion 140 is formed is displaced downward. As a result, the locking portion 140 is displaced downward from the lower end portion of the locking plate 234, and the locking plate 234 is slid to a position over the locking portion 140. At this time, the convex portion 233 comes into contact with the end portions of the groove portions 123 and 124 on the extending portion 160 side, and the plug portion 200 can no longer slide to the extending portion 160 side. On the other hand, the locking portion 140 that has been displaced downward returns to the original position when the locking plate 234 changes the locking portion 140, so that the plug portion 200 cannot slide to the opposite side. In this way, the locking relationship between the main body portion 100 and the plug portion 200 is maintained. At this time, a terminal (not shown in FIG. 3) provided between the lead plate 231 and the lead plate 232 of the plug portion 200 and the terminals 131 and 132 of the main body portion 100 are in contact with each other, and the main body portion 100 and the plug portion 200 are contacted. Are electrically connected to each other. Thus, the main body portion 100 and the plug portion 200 are mounted in an electrically connected state while maintaining a locking relationship. In addition, the notch part 243 of the cover part 240 has a role which prevents the latching part 140 from contacting the cover part 240 in the mounting procedure mentioned above. The cut-out portion 243 is not necessarily provided as long as the height relationship is secured so that the locking portion 140 and the cover portion 240 do not come into contact with each other.

  FIG. 4 shows a perspective view of the side surface of the AC adapter 20 to which the main body 100 and the plug unit 200 are attached as viewed in the direction from the plug 222 toward the plug 221. In FIG. 4, only the peripheral part of the release part 150 is shown, and the other parts are not shown. As shown in the figure, the locking plate 234 of the plug part 200 is located between the locking part 140 and the releasing part 150 by the above-described mounting operation, and the main body part 100 and the plug part 200 are locked. It has become. The release part 150 is accommodated in a cavity part 242 formed inside the cover part 240.

  The height of the upper end 244 a that is the upper end portion of the hole portion 244 is lower than the height of the upper surface portion of the release portion 150. Further, the hole 244 is formed at a position where a virtual line VL connecting the end of the upper surface of the release unit 150 on the extension 160 side and the upper end 244 a intersects the upper surface of the housing 110.

A-3. How to remove the plug part 200:
A method of removing the plug part 200 from the main body part 100 will be described with reference to FIG. The plug part 200 can be removed only by using the special tool 300. The special tool 300 is a tool created exclusively for the removal work of the plug part 200, and is not a general-purpose tool that can be used in common for various types of work. The special tool 300 includes a grip portion 310 and a special shape portion 320 as shown in the figure. The special shape portion 320 has an elongated rod shape, and is formed by bending in accordance with a method for removing the plug portion 200 described below.

  When the special shape portion 320 of the special tool 300 is inserted into the hole portion 244 and the notch portion 243 of the main body portion 100, the tip portion of the special shape portion 320 can abut on the upper surface portion of the release portion 150 (position A). ). From this state, when the special tool 300 is rotated to the plug part 200 side and the special tool 300 is moved to the position B shown in the figure, the tip part of the special shape part 320 remains in contact with the upper surface part of the release part 150. A downward pressing force can be applied to the upper surface portion. Thereby, the release part 150 is displaced from the position C at the time of mounting to the position D displaced downward. With this operation, the locking portion 140 formed on the movable plate 111 as well as the release portion 150 moves downward, and the upper end of the locking portion 140 is displaced below the lower end of the locking plate 234. If the plug part 200 is slid to the side opposite to the extension part 160 in such a positional relationship, the locking plate 234 does not come into contact with the locking part 140, so that the plug part 200 can be removed from the main body part 100. .

  Such a removal operation is realized by the special shape portion 320 of the special tool 300 having a bent shape. This is because the slit 245 is formed in a shape that cannot reach the hole 244 and the notch 243 to the upper surface of the release part 150 in a straight line. Specifically, as described above, the hole 244 is located at a position where the imaginary line VL connecting the end of the upper surface of the release unit 150 on the extension 160 side and the upper end 244a intersects the upper surface of the housing 110. This is because, for example, a linear pin or driver cannot access the upper surface portion of the release portion 150 from the hole portion 244 and the notch portion 243 via the hole portion 244. The inclined surface 241 is formed to generate a pressing force to the release portion 150 when the plug 200 is mounted on the main body portion 100 as described above. If the side surface is formed of an inclined surface, it may be formed as a surface having no inclination. In addition, the hole 244 is not essential if the size of the notch 243 is such that the tip of the special shape portion 320 can be inserted.

  The slit 245 used for the removal work of the plug part 200 may be formed in a shape that can access the upper surface part of the release part 150 inside the cover part 240 only with a predetermined tool. In other words, it may be formed in a size that does not allow a human finger to enter the opening of the slit 245. Alternatively, even if a finger enters the opening, it may be formed in a shape that is tapered or bent so that a human finger does not enter so that the upper surface of the release unit 150 cannot be accessed. For example, the opening of the slit 245 is preferably about φ5 mm or less, or at least one of the vertical and horizontal dimensions is about 5 mm or less as a size that does not allow human fingers to enter, or less than φ2 mm, or More preferably, at least one of the vertical and horizontal dimensions is less than 2 mm.

A-4. effect:
In the AC plug 20 having such a configuration, the locking portion 140 that locks the main body portion 100 and the plug portion 200 in a state where the main body portion 100 and the plug portion 200 are mounted is provided with a predetermined portion (here, the upper surface of the release portion 150). The release portion 150 is displaced by receiving a predetermined acting force, and the release portion 150 capable of releasing the locking relationship is covered by the cover portion 240. This cover part 240 has a slit 245 that leads from the outside of the cover part 240 to a predetermined part that receives an acting force when the locking relationship is released, so that the predetermined part cannot be accessed from other than the slit 245. Formed. Therefore, when removing the plug part 200 from the main body part 100, the user needs to access the upper surface part of the releasing part 150 through the slit 245 and apply a predetermined acting force. As a result, it is possible to prevent the plug part 200 from being detached from the main body part 100 due to an erroneous operation or handling by the user.

  Further, in the AC plug 20, the slit 245 is formed so as not to reach the upper surface portion of the release portion 150 from the outside in a straight line. The effect which suppresses coming off from the part 100 can be improved. For example, even if a child mistakenly inserts a linear pin or the like into the slit 245, the inserted pin does not reach the upper surface portion of the release portion 150, so that the plug portion 200 may come off from the main body portion 100. Absent.

  Further, in the AC plug 20, the slit 245 can be accessed from the top surface of the release unit 150 from the outside only when a non-general-purpose tool is used, so if a tool for removing the plug unit 200 is not used, Cannot be removed. Such a tool is often managed by a specific person, and is rarely used without intention of removal, so that the plug part 200 may be detached from the main body part 100 due to an erroneous operation or handling by the user. The effect of suppressing can be improved.

B. Second embodiment:
A second embodiment of the present invention will be described. The AC adapter as the second embodiment differs from the first embodiment only in the shape of the plug portion. Hereinafter, the plug part 400 as a second embodiment will be described. In the following description and explanatory drawings, for the configuration common to the first embodiment of the plug part 400, the last two digits of the numbers given to the respective components are displayed with the same numbers as those of the first embodiment. The description is omitted. The structure of the plug part 400 is shown in FIG. The plug part 400 includes a cover part 450 instead of the cover part 240 of the first embodiment. Other points are common to the first embodiment. The cover portion 450 provided in the plug portion 400 includes a front surface, a side surface, and a flat surface (upper surface) when viewed from the direction from the plug 423 toward the plugs 421 and 422. A hollow portion 452 having an open bottom is formed inside the cover portion 450. The front surface of the cover portion 450 includes an inclined surface 451 formed obliquely in a direction from the plug 423 toward the plugs 421 and 422 from above to below. Similar to the first embodiment, the inclined surface 451 is formed to generate a pressing force to the release portion 150 when the plug 400 is attached to the main body portion 100. A lower portion of the inclined surface 451 is cut out, and a cutout portion 453 which is a cutout opening portion is formed. As in the first embodiment, the notch 453 is formed so that the cover 450 of the plug 400 does not contact the locking portion 140 of the main body 100 when the plug 400 is attached to the main body 100. Has been. A hole 454 is formed on the upper surface of the cover 450. In this embodiment, the diameter of the hole 454 is about 3 mm. The hole 454 and the notch 453 communicate with the cavity 452. The hollow portion 452 and the hole portion 454 are collectively referred to as a narrow gap 455.

  FIG. 7 shows a perspective view of the side surface of the AC adapter to which the main body portion 100 and the plug portion 400 are attached in a direction from the plug 422 toward the plug 421. In FIG. 7, only the peripheral part of the release part 150 is shown, and the other parts are not shown. As shown in the figure, the release part 150 is accommodated in a cavity 452 formed inside the cover part 450. When viewed from the hole 454 side, the hollow portion 452 is formed to bend in a stepped manner toward the inside. This bent shape is formed in a shape that cannot reach the upper surface portion of the release portion 150 from the hole portion 454 in a straight line. In FIG. 7, it seems that there is a line that is linearly accessible from the hole 454 to the upper surface of the release unit 150, but with a tool of a size that can ensure the strength with which the release unit 150 can be pressed, The slit 455 is formed in a size inaccessible.

  A method of detaching the plug part 400 from the main body part 100 in the mounted state of the main body part 100 and the plug part 400 will be described with reference to FIG. The plug part 400 can be removed only by using the special tool 500. The special tool 500 is a tool created exclusively for removing the plug unit 400. The tip of the special tool 500 has a long and narrow bar shape, and is bent in a staircase shape according to the shape of the slit 455.

  After inserting the special tool 500 from the hole portion 454 until it hits the inner surface of the hollow portion 452 (position E), the special tool 500 is slid in the direction from the extending portion 160 toward the plug portion 400, and the special tool 500 is further moved. When inserted downward, the tip of the special tool 500 can come into contact with the upper surface of the release portion 150. When the special tool 500 is further inserted downward from this state, the release unit 150 receives the pressing force of the special tool 500 and is displaced from the position C to the position D. Thereby, the plug part 400 can be removed from the main body part 100 in the same manner as in the first embodiment.

  In the plug unit 400 having such a configuration, the cover 450 that covers the release unit 150 does not reach the upper surface of the release unit 150 from the hole 454 in a straight line when the main body unit 100 and the plug unit 400 are mounted. Since the slit 455 formed in a possible shape is provided, only when the special tool 500 is used, the release portion 150 can be pressed to release the locking relationship between the main body portion 100 and the plug portion 400. it can. Accordingly, the same effects as those of the first embodiment are obtained. As is clear from the above description, the shape of the slit formed in the cover portion is a straight line, and a pressing force for displacing the predetermined portion of the release portion 150 from the outside, that is, the release portion 150 is externally applied. It may be formed in various shapes as long as it is formed in a shape that cannot reach the part to be acted on.

C. Third embodiment:
A third embodiment of the present invention will be described. The AC adapter as the third embodiment is different from the first embodiment only in the shape of the plug portion. Hereinafter, the plug portion 600 as the third embodiment will be described. In the following description and explanatory diagrams, for the configuration common to the first embodiment of the plug unit 600, the last two digits of the numbers given to the respective components are displayed with the same numbers as those of the first embodiment. The description is omitted. The structure of the plug portion 600 is shown in FIG. The plug part 600 includes a cover part 660 instead of the cover part 240 of the first embodiment. Other points are common to the first embodiment. The cover portion 660 included in the plug portion 600 includes a side surface and a flat surface (upper surface) when viewed from the direction from the plug 623 toward the plugs 621 and 622. Inside the cover 660, a slit 665 is formed that is open at the front and below. In the present embodiment, the size of the opening on the front side of the slit 665 is about 10 mm × 5 mm.

  FIG. 10 is a perspective view of the side surface of the AC adapter to which the main body portion 100 and the plug portion 600 are attached as viewed from the plug 622 toward the plug 621. In FIG. 10, only the periphery of the release unit 150 is illustrated, and the other portions are not shown. As shown in the figure, the release portion 150 is accommodated in a slit 665 formed inside the cover portion 660. The slit 665 is formed in a shape that can reach the upper surface of the release portion 150 by a straight line from the opening on the extension portion 160 side.

  In the mounted state of the main body portion 100 and the plug portion 600, the plug portion 600 can be removed using a general-purpose tool having a linear shape. For example, as shown in FIG. 10, a minus type driver 700 can be used. Specifically, the tip of the driver 700 is inserted from the opening on the extension 160 side of the slit 665, and the tip is moved downward in a state where the tip is in contact with the upper surface of the release portion 150 (position G). When this occurs (position H), the release unit 150 receives the pressing force of the dry blade 700 and is displaced from the position C to the position D. Accordingly, the plug portion 600 can be removed from the main body portion 100 in the same manner as in the first embodiment.

  In the plug portion 600 having such a configuration, the slit 665 is formed in a shape that can reach the upper surface portion of the release portion 150 through a straight line from the opening on the extension portion 160 side. Access to the upper surface of the release unit 150 from the outside is possible using a general-purpose tool. Accordingly, it is possible to remove the plug portion 600 using a general-purpose tool. As a result, when the user intends to remove the plug unit 600, the user can easily remove using the general-purpose tool, and the convenience for the user is improved.

A modification of the above-described embodiment will be described.
D: Modified example:
D-1. Modification 1:
In the above-described embodiment, an example is shown in which the cover portion covering the release portion 150 is formed integrally with the plug portion so that access to the upper surface portion of the release portion 150 from outside is not possible except for the slit. However, the cover may be formed integrally with the main body 100. Or you may comprise a cover part with the member formed in the main-body part 100, and the member formed in the plug part.

  Alternatively, the cover portion may be prepared separately from the plug portion or the main body portion 100, and may be configured to be attachable to the plug portion or the main body portion 100 by a socket shape with a mounting release mechanism. In this way, the cover can be attached and detached according to the usage status of the AC adapter 20 and the user's way of thinking, and the convenience for the user is improved. Further, the cover portion prepared separately from the plug portion and the main body portion 100 in this manner may be configured not to have a mounting release mechanism. That is, the cover portion may be configured so that it cannot be removed once attached to the plug portion or the main body portion 100. If it carries out like this, it can suppress that a cover part is removed by incorrect operation and handling.

D-2. Modification 2:
In the above-described embodiment, the main body portion 100 includes the locking portion 140 that locks the main body portion 100 and the plug portion, and the release portion 150 that displaces the locking portion 140 by receiving an acting force in a predetermined direction. However, these may be provided as a whole AC adapter. For example, the locking part 140 and the release part 150 may be configured to be included in the plug part. Or it is good also as a structure with which both the main-body part 100 and a plug part are provided, respectively.

D-3. Modification 3:
In the above-described embodiment, the release unit is one push button, but may be configured as a plurality of push buttons. For example, it is good also as a structure which makes the structure of a latching | locking part the socket shape provided with a lock claw in two places, and is provided with the push button as a cancellation | release part corresponding to each of a lock claw. Of course, the release unit is not limited to the push button type, and can have various configurations. For example, a slide switch that slides in response to a pressing force in the lateral direction may be used. Or it is good also as a hook structure urged | biased by the predetermined direction. For example, the locking portion may be displaced by hooking the tip of the tool on the hook structure and pulling it against the urging force.

D-4. Modification 4:
In the above-described embodiment, an example of an AC adapter including one plug portion and one main body portion 100 has been described. However, the present invention is common to a plurality of detachable plug portions and these plug portions. It can also be realized as an AC adapter set including the main body 100 to be used. In such a case, the set of at least one plug portion and the main body portion 100 may include the above-described locking portion, releasing portion, and cover portion.

  For example, in such a set, the plurality of plug portions include a first plug portion having a predetermined type of plug and a cover portion, a plug of the same type as the first plug, and a first portion having no cover portion. 2 plug portions may be included. In this way, the user can selectively use the first plug part that can be prevented from being detached from the main body part 100 due to an erroneous operation or the like and the second plug part that can be easily removed according to the usage method desired by the user. be able to. Alternatively, the plurality of plug portions may include different types of plugs, and at least one of them may include a cover portion. In this way, when the safety standard regarding the removal of the AC plug varies from country to country, the presence or absence of a cover can be set for each type of plug according to the safety standard of each country.

  Alternatively, the cover may be provided on the main body 100 side. By doing so, it is possible to prevent the plug part from being detached from the main body part 100 due to an erroneous operation or the like when any plug part is attached.

D-5. Modification 5:
In the above-described embodiment, an example of an AC adapter has been described. However, the power supply device of the present invention is not limited to the AC adapter, and can be realized as various power supply devices. For example, it may be realized as an outlet-mounted lightning surge protector or as an outlet-mounted electric leakage breaker.

  The embodiment of the present invention has been described above. Of the constituent elements of the present invention in the above-described embodiment, elements other than the elements described in the independent claims are additional elements and can be omitted as appropriate. . In addition, the present invention is not limited to such an embodiment, and it is needless to say that the present invention can be implemented in various modes without departing from the gist of the present invention. For example, in addition to the configuration as the power supply device, the present invention may be an AC plug device, a main body of the power supply device, a plurality of types of AC plug devices, and a power supply device set including a main body commonly used for these. Can be realized.

DESCRIPTION OF SYMBOLS 20 ... AC adapter 100 ... Main-body part 110 ... Housing | casing 111 ... Movable plate 112 ... Clearance 120, 121, 122 ... Recessed part 123, 124 ... Groove part 131, 132 ... Terminal 140 ... Locking part 150 ... Release | release part 160 ... Extension part 180 ... Cable 200,400,600 ... Plug part 210,410 ... Case 221-223,421-423,621-623 ... Plug 231,232,431,432,631,632 ... Lead plate 233,433,633 ... Convex part 234, 434, 634 ... Locking plate 240, 450, 650 ... Cover part 241 ... Slope 242 ... Cavity part 243 ... Notch part 244 ... Hole part 244a ... Upper end 245 ... Slit 300 ... Special tool 310 ... Grip part 320 ... special shape part 451 ... slope 452 ... cavity part 453 ... notch part 454 ... hole part 455 ... thin 500 ... special tool 665 ... slit 700 ... driver VL ... imaginary line

Claims (7)

A power supply device comprising: a plug portion provided with a plug that is inserted into and removed from an AC power outlet; and a main body configured to be detachable with the plug portion facing outward.
When the plug portion is attached to the main body, a locking portion for locking the plug portion and the main body,
A release portion that displaces the locking portion by receiving an acting force in a predetermined direction by a predetermined portion, and enables the locking relationship between the plug portion and the main body to be released;
A covering portion that covers the release portion in the mounted state;
The covering portion has a slit that communicates from the outside of the covering portion to the predetermined portion, and the release portion is excluded so that access to the predetermined portion from the outside of the covering portion is impossible except for the slit. Power supply unit covered.   The power supply device according to claim 1, wherein the slit is formed in a shape that cannot reach the predetermined portion from the outside in a straight line.   The power supply device according to claim 1, wherein the slit is formed in a shape that allows the access only when a non-general-purpose tool is used.   The power supply device according to claim 1, wherein the slit is formed in a shape that allows the access using a general-purpose tool. An AC plug device that includes a plug that can be inserted into and removed from an AC power outlet, and that can be attached to the main body of the power supply with the plug facing outward,
Locking provided on the AC plug device and / or the main body of the power supply unit for locking the AC plug device and the main body of the power supply device when the AC plug device is mounted on the main body of the power supply device. The AC plug device and / or the power source to disengage the locking relationship between the AC plug device and the main body of the power source device by displacing the portion by receiving an acting force in a predetermined direction. A covering portion that covers the release portion provided in the main body of the apparatus in the mounted state,
The covering portion has a slit that communicates from the outside of the covering portion to the predetermined portion, and the release portion is excluded so that access to the predetermined portion from the outside of the covering portion is impossible except for the slit. C plug device that covers A main body of a power supply device configured to be detachable with a plug portion having a plug inserted into and removed from an AC power outlet, with the plug facing outward,
When the plug portion is attached to the main body, the plug portion and / or a locking portion provided in the main body of the power supply device for locking the plug portion and the main body of the power supply device are provided at predetermined portions. Displacement by receiving an acting force in a predetermined direction to release the locking relationship between the plug portion and the main body, the release portion provided in the plug portion and / or the main body of the power supply device, A cover for covering in the mounted state;
The covering portion has a slit that communicates from the outside of the covering portion to the predetermined portion, and the release portion is excluded so that access to the predetermined portion from the outside of the covering portion is impossible except for the slit. The main body of the power supply. Provided with plugs that can be plugged into and unplugged from AC power outlets, and a plurality of types of plugs with different types of plugs, and the plurality of types of plugs can be attached and detached with the plugs facing outward A power supply set comprising a configured main body,
A set of at least one of the plurality of types of plug portions and the main body is:
A locking portion for locking the plug portion and the main body when the at least one plug portion is attached to the main body;
A release portion that displaces the locking portion by receiving an acting force in a predetermined direction by a predetermined portion, and enables the locking relationship between the at least one plug portion and the main body to be released;
A covering portion that covers the release portion in the mounted state;
The covering portion has a slit that communicates from the outside of the covering portion to the predetermined portion, and the release portion is excluded so that access to the predetermined portion from the outside of the covering portion is impossible except for the slit. Power supply set.

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