JP2004006189A - Power supply adapter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply adapter which is used both by a DC power supply and by an AC power supply and in which one terminal cannot be used while the other terminal is used. <P>SOLUTION: The power supply adapter comprises a case 2 and a slide cover 10 slidably attached to a side surface of the case 2. A coming-off prevention mechanism prevents the slide cover 10 from coming off the case 2 when it slides on an opening part 5 of the case 2. The coming-off prevention mechanism comprises a protrusion part comprising first and second protrusion parts 42 and 43 protruding from a sliding path for the slide cover 10 at an upper case part 4, and projections 14 and 15 protruding from the inside surface of the slide cover 10. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a power adapter, and more particularly to a technique suitable for use with two-system input of an AC power supply and a DC power supply.
[0002]
[Prior art]
In general, a power adapter generally functions for input from a single type of power supply voltage. However, some AC power supplies have different input voltages such as about 100 V to 220 V. There is also a wide input specification that can handle things.
[0003]
[Problems to be solved by the invention]
By the way, there is a demand for a power adapter that can be used for inputs of both a DC power supply and a commercial AC power supply.
However, when a power adapter that can be shared for both AC and DC power is manufactured, if either AC or DC power is used, the power of the other power is also used at the same time. If this is done, not only may the power supply adapter be destroyed, but also both the power supply side to be supplied and the product to be used may be destroyed.
Also, if one terminal is used and the other terminal is exposed and ready for use, hands or the like may touch the unused terminals, resulting in the danger of electric shock. there were.
[0004]
Therefore, when manufacturing a power adapter that can be used for both power supplies, when one terminal is used, care must be taken not to use the other terminal, and no electric shock or the like will occur. It was necessary to take care.
[0005]
The present invention has been made in consideration of the above-described problems of the related art, and has as its object to be able to be shared by both a DC power supply and an AC power supply, and to use one terminal when the other terminal is used. It is an object of the present invention to provide a highly-safe power supply adapter that can prevent the risk of electric shock or the like at the other terminal portion, in addition to the fact that there is no possibility that the terminal portion will be used.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention employs the following solutions.
The invention according to claim 1 includes a case having an opening on one side surface, first and second terminal portions provided to be respectively exposed to the outside of the opening of the case, and the opening of the case. A slide cover slidably attached between the first terminal portion and the second terminal portion, and the slide cover slides on one of the first terminal portion and the second terminal portion. At this time, one of the terminal portions is covered and the other terminal portion is opened.
[0007]
According to the power adapter according to the present invention, when the slide cover covers one terminal, the other terminal is opened, and when the slide cover covers the other terminal, only one terminal is opened. Only one of the terminals that are always open can be used, and when one terminal is in use, the other terminal can be prevented from being used. Being able to avoid doing so can increase security.
[0008]
According to a second aspect of the present invention, in the power supply adapter according to the first aspect, a drop-off prevention mechanism for preventing the slide cover from falling off the case is provided between the slide cover and the case.
[0009]
According to the power adapter according to the present invention, the slide cover does not fall out of the case by the fall prevention mechanism, so that only any unused terminal portion can be reliably covered, and thus the reliability as the power adapter is reduced. Can be enhanced.
[0010]
According to a third aspect of the present invention, in the power adapter according to the second aspect, the falling-off preventing mechanism includes a ridge portion projecting along a sliding path of the slide cover in the case along a width direction of the case; A projection is provided on the inner surface of the cover, and is provided with a projection guided by the ridge.
[0011]
ADVANTAGE OF THE INVENTION According to the power supply adapter which concerns on this invention, since the protrusion provided in the slide cover is guided by the protrusion provided in the case, the slide cover slides through the opening part of a case, so that a slide cover Can be accurately slid.
[0012]
According to a fourth aspect of the present invention, in the power adapter according to the first or second aspect, when the slide cover covers any one of the first terminal portion and the second terminal portion between the slide cover and the case, the position thereof is set. And a lock mechanism for positioning and stopping the slide cover.
[0013]
According to the power adapter according to the present invention, when any one of the first terminal portion and the second terminal portion is covered, the locking mechanism stops the positioning of the slide cover at that position, so that the slide cover is inadvertently placed on the case. There is no sliding.
[0014]
According to a fifth aspect of the present invention, in the power adapter according to the fourth aspect, the locking mechanism is provided with a stopper protruding from a sliding path of a slide cover of the case, and a protruding part provided on an inner surface of the slide cover, and And an engaging projection that engages with
[0015]
ADVANTAGE OF THE INVENTION According to the power supply adapter which concerns on this invention, since the protrusion of a lock mechanism engages with the stopper projectingly provided in the case and stops the positioning of the slide cover in a case, the slide cover is located on the slide path of the case. It can be locked securely.
[0016]
The invention according to claim 6 is the power adapter according to claims 1 to 5, wherein one of the first terminal portion and the second terminal portion is a DC terminal portion, and the other is an AC terminal portion. There is a feature.
According to the power adapter according to the present invention, one of the first terminal portion and the second terminal portion constitutes a DC terminal portion, and the other constitutes an AC terminal portion. Can be used, and a power adapter can be provided which can share a DC and AC power supply.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 6 show a power adapter according to an embodiment of the present invention. FIG. 1 is an overall perspective view showing a state in which an AC power supply can be used, and FIG. 2 is an overall view showing a state in which a DC power supply can be used. 3 is an explanatory perspective view showing the case and the slide cover, FIG. 4 is an enlarged cross-sectional view corresponding to line XX in FIG. 1 showing an attached state of the case and the slide cover, and FIG. FIG. 6 is a cross-sectional view corresponding to the line YY of FIG. 1 showing a state where the slide cover is positioned and fixed, and FIG. 6 is a cross-sectional view corresponding to the line ZZ of FIG. 2 showing a state where the slide cover is positioned and fixed to the case. .
The power adapter 1 of the embodiment shown in FIGS. 1 and 2 includes a case 2 and a slide cover 10 slidably attached to the back of the case 2.
[0018]
The case 2 is made of an insulating synthetic resin and includes a lower case portion 3 and an upper case portion 4 mounted thereon. Openings are formed on both lower surfaces of the lower and upper case portions 3 and 4. A part 5 is provided. As shown in FIG. 3, the opening 5 has a slot 5a formed in the back surface of the lower case 3 and the upper case 4 and a rectangular space 5b on the right side adjacent to the notch 5a. , These notches 5a and spaces 5b.
[0019]
The opening 5 of the case 2 has an AC terminal 6 serving as a first terminal for supplying commercial AC power and a DC terminal 7 serving as a second terminal for supplying DC power. It is installed exposed to the outside. The AC terminal portion 6 is provided in the notch 5a of the opening 5 and is formed of a so-called inlet into which a plug (not shown) of a product to be used is inserted. The DC terminal 7 is provided in the space 5b of the opening 5, and is configured so that a lead wire (not shown) of a product to be used can be fastened by a screw 7a.
[0020]
As shown in FIGS. 1 and 2, the slide cover 10 is slidably mounted between the DC terminal 3 and the AC terminal 4 in the opening 5 of the case 2.
[0021]
More specifically, as shown in FIG. 3B, the slide cover 10 has an L-shaped main body 11 formed by an upper wall 11a and a rear wall 11b, and slides on both ends of the upper wall 11a of the main body 11. The moving claws 12 are protruded, respectively, and the lower sliding claws 13 are protruded on both sides of the front end of the rear wall 11b. As shown in FIG. 3A, the case 2 has an upper guide groove 41 formed along the width direction of the case at the rear of the upper surface of the upper case 4, and the width of the case A lower guide groove 31 is provided along the direction.
[0022]
As shown in FIG. 4, the upper guide groove 41 is formed so as to be recessed forward between a rear upper wall 4a of the upper case 4 and a lower stepped portion 4b formed with a step below the upper wall 4a. ing. The lower guide groove 31 is disposed at a lower portion of the lower surface of the lower case 3 so as to stand upright, and is located inside the upright wall 3a with a dimension slightly larger than the plate thickness of the slide cover 10. At the same time, it is formed so as to be recessed between the downwardly directed tip of the lower step portion 4b and the inner wall 3b which is formed so as to abut.
[0023]
The upper sliding claw 12 of the slide cover 10 is slidably inserted into the upper guide groove 41 of the upper case 4, while the lower sliding claw 13 is slidably inserted into the lower guide groove 31 of the lower case 3. When the upper and lower sliding claws 12 and 13 move in the corresponding upper and lower guide grooves 41 and 31, the slide cover 10 is connected to the AC terminal 6 and the DC terminal 6 at the opening 5 of the case 2. It slides between the terminal portions 7.
[0024]
At this time, when the slide cover 10 slides on the opening 5 of the case 2 toward the DC terminal 7 as shown by an arrow a in FIG. 1, the slide cover 10 covers the DC terminal 7 and opens the AC terminal 6. On the other hand, when sliding to the AC terminal portion 6 side as shown by the arrow b in FIG. 2, the DC terminal portion 7 is opened by covering the AC terminal portion 6. That is, when one of the AC terminal 6 and the DC terminal 7 is covered, the slide cover 10 opens the other.
[0025]
Further, the power adapter 1 is provided with a falling-off prevention mechanism (not shown) for preventing the slide cover 10 from falling off the case 2 when sliding on the opening 5 of the case 2. As shown in FIGS. 3 (a), 5 and 6, the drop-off prevention mechanism includes a first ridge 42 and a second ridge 42 projecting on a sliding path between the upper case 4 and the slide cover 10. The slide cover 10 includes protrusions (not shown) formed by the protrusions 43 and protrusions 14 and 15 protruding from the inner surface of the slide cover 10.
[0026]
The first ridge portion 42 of the ridge portion has a length approximately equal to the width of the AC terminal portion 6 at a position near the AC terminal portion 6 on the upper surface of the lower step portion 4 b of the upper case portion 4. The second ridge portion 43 is formed along the width direction of the case 2 at a position between the AC terminal portion 6 and the DC terminal portion 7 on the back surface of the lower step portion 4b. I have. As shown in FIG. 3B, the protrusion 14 is provided on the inner surface of the upper wall 11a of the slide cover 10 along the width direction, and the protrusion 15 is provided on the inner surface of the rear wall 11b along the width direction. ing.
[0027]
Then, when the slide cover 10 is attached to the opening 5 of the case 2 and slides between the DC terminal 7 and the AC terminal 6 in the opening 5, the projection 14 is moved to the first position as shown in FIG. The slide cover 10 can be prevented from falling off the case 2 by being guided by the convex ridges 42 and the protrusions 15 being guided to the lower side of the second convex ridges 43.
At this time, the projection 14 of the slide cover 10 is guided to the front end of the first ridge 42, and the projection 15 is guided to the lower end of the second ridge 43, so that the slide cover 10 is lifted upward. In addition, it does not fall off the case 2 by sliding in the posture without falling.
[0028]
Further, when the slide cover 10 slides on the opening 5 of the case 2 and covers either the AC terminal 6 or the DC terminal 7, the power adapter 1 is provided at the position where the cover is covered. A lock mechanism (not shown) for positioning and stopping the slide cover 10 is provided.
The lock mechanism includes a stopper 44 projecting on the slide path of the slide cover 10 in the case 2, and engaging projections 16, 17 projecting from the slide cover 10 to engage with the stopper 44. ing.
[0029]
That is, the stopper 44 is formed to protrude upward at the position of the central portion of the lower step portion 4b of the upper case 4 as shown in FIGS. The engagement projections 16 and 17 are provided at both ends inside the upper wall 11a of the slide cover 10 in a direction orthogonal to the width direction thereof, and furthermore, respectively, protrude downwardly as shown in FIG. .
[0030]
When the slide cover 10 slides from the DC terminal 7 to the AC terminal 6 on the opening 5 of the case 2 as shown by an arrow c in FIG. When the slide cover 10 slides over the stopper 44, the engagement projection 16 of the slide cover 10 also slides over the stopper 44 toward the AC terminal 6, and one end of the slide cover 10 has the opening 5. , The slide cover 10 is positioned and fixed in a state where the slide cover 10 covers the AC terminal portion 6.
[0031]
On the other hand, when the slide cover 10 slides from that position in the opposite direction as indicated by the arrow d in FIG. 6, the slide protrusion 10 slides toward the DC terminal portion 7 because the engagement projection 16 gets over the stopper 44. At the same time, the engaging projection 17 slides over the stopper 44 and the other end of the slide cover 10 abuts against the other end of the opening 5 so that the slide cover 10 is positioned at a position covering the DC terminal 6. It is fixed.
[0032]
Since the power adapter 1 of this embodiment is configured as described above, its handling will be described next.
First, when a commercial power supply (not shown) is used, the slide cover 10 attached to the case 2 is slid toward the DC terminal 7 to open the AC terminal 6.
At this time, when the slide cover 10 is slid toward the DC terminal 7 until the other end of the slide cover 10 in the opening 5 of the case 2 comes into contact with the end forming the opening 5, the engagement protrusion 16 Moves over the stopper 44 of the upper case portion 4 and the engagement protrusion 16 is locked by the stopper 44, so that the slide cover 10 is stopped at the position where the AC terminal portion 6 is opened.
[0033]
In this state, a plug of an AC product (not shown) is inserted into the AC terminal portion 6 and the plug 8 of the power adapter 1 is inserted into the AC power source, so that the AC product can be supplied with AC power.
[0034]
On the other hand, when a DC power supply (not shown) is used, the slide cover 10 is slid from the DC terminal 7 to the AC terminal 6 to open the DC terminal 7.
At this time, when the slide cover 10 is slid in the opening 5 of the case 2 toward the AC terminal 6 until one end of the slide cover 10 comes into contact with the end forming the opening 5 of the case 2, the engagement is caused by the sliding. Since the projection 17 gets over the stopper 44 of the upper case portion 4 and the engaging projection 17 is locked by the stopper 44, the positioning of the slide cover 10 is stopped at the position where the AC terminal portion 6 is opened. .
[0035]
In this state, the lead wire of a DC product (not shown) is fixed to the DC terminal portion 7 with the screw 7a, and the plug 8 of the power adapter 1 is inserted into the DC power source, so that DC power is supplied to the DC product. Will be possible.
[0036]
According to this embodiment, when the slide cover 10 covers the AC terminal portion 6, the DC terminal portion 7 is opened, and when the slide cover 10 covers the DC terminal portion 7, the AC terminal portion 6 is opened. Since one of the terminals 6 and 7 can be used, it is possible to reliably prevent the other terminal from being used when one of the terminals is used. This can increase safety by avoiding the occurrence of danger.
[0037]
Further, the slide cover 10 does not fall out of the case 2 by the fall prevention mechanism provided between the slide cover and the case, so that only any unused terminal portion can be reliably covered. Reliability can be increased.
[0038]
In addition, the falling-off prevention mechanism includes a first protrusion 42 and a second protrusion 43 projecting on the slide path 5 of the slide cover 10 in the case 2, and a protrusion 14 on the inner surface of the slide cover 10. 15 are provided, and the projections 14 and 15 are guided by the first ridge 42 and the second ridge 43, so that the slide cover 10 slides in the opening 5 of the case 2. Can be accurately slid.
[0039]
Further, a lock mechanism is provided between the slide cover 10 and the case 2 for positioning and stopping the slide cover 10 at the position when the slide cover 10 covers either the AC terminal portion 6 or the DC terminal portion 7. As a result, the slide cover 10 is positioned and stopped at that position, so that the slide cover 10 does not slide on the case 2 carelessly.
[0040]
In addition, the lock mechanism includes a stopper 44 protruding from the slide path of the slide cover 10 of the case 2 and engagement protrusions 16 and 17 protruding from the inner surface of the slide cover 10. , 17 engage the stopper 44 of the case 2 to stop the positioning of the slide cover 10 on the case 2, so that the slide cover 10 can be securely locked on the slide path of the case 2.
[0041]
And since the AC terminal part 6 and the DC terminal part 7 are comprised, both a DC power supply and an AC power supply can be used, and the power supply adapter 1 which can share the power supply of DC and AC can be provided.
[0042]
In the illustrated embodiment, when viewed from the side of the case 2, an example is shown in which the AC terminal 6 is provided on the left side and the DC terminal 7 is provided on the right side. It is.
Further, since the slide cover 10 is made of a thin synthetic resin, a reinforcing rib 18 may be provided at an inner corner portion, for example, as shown by a chain line in FIG. In this case, it is natural that the reinforcing rib 18 has a size that does not hinder the sliding of the slide cover 10.
[0043]
【The invention's effect】
As described above, according to the present invention, when the slide cover covers one of the first terminal portion and the second terminal portion, the other is opened, and when the slide cover covers the other, one is opened. Since only one of the open terminals can be used, the terminal can be used for both the DC power supply and the AC power supply, and one of the terminals is used. In this case, not only there is no possibility that the other terminal is used, but also it is possible to obtain an effect of providing a highly safe power supply adapter capable of preventing danger such as electric shock at the other terminal.
[Brief description of the drawings]
FIG. 1 is a diagram showing a power adapter according to an embodiment of the present invention, and is an overall perspective view showing a state where an AC power supply can be used.
FIG. 2 is an overall perspective view showing a state in which a DC power supply can be used.
FIG. 3 is an explanatory perspective view showing a case and a slide cover.
FIG. 4
FIG. 2 is an enlarged cross-sectional view corresponding to line XX of FIG. 1 showing a state of attachment of a case and a slide cover.
FIG. 5
FIG. 2 is a cross-sectional view illustrating a state where a slide cover is positioned and fixed to a case, corresponding to a line YY in FIG. 1.
FIG. 6
FIG. 3 is a cross-sectional view corresponding to line ZZ in FIG. 2 showing a state in which a slide cover is positioned and fixed to a case.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Power adapter 2 Case 3 Lower case part 31 Lower guide groove 4 Upper case part 41 Upper guide groove 42 1st convex part (convex part)
43 2nd ridge (ridge)
44 Stopper 5 Opening 6 AC terminal (first terminal)
7 DC terminal (second terminal)
9 Code 10 Slide cover 12 Upper sliding claw 13 Lower sliding claw 14, 15 Projection 16, 17 Engagement projection

Claims (6)

A case having an opening on one side surface, first and second terminal portions provided to be exposed to the outside of the case, and a first terminal portion and a second terminal provided at the opening of the case; A slide cover attached slidably along the section,
A power adapter, wherein when the slide cover slides on one of the first terminal portion and the second terminal portion, the slide cover covers one of the terminal portions and opens the other terminal portion. . The power adapter according to claim 1,
A power supply adapter comprising a mechanism for preventing the slide cover from falling off the case between the slide cover and the case. The power adapter according to claim 2,
The drop-off prevention mechanism includes a ridge protruding along the width direction of the case on the slide path of the slide cover in the case, and a protrusion protruding from the inner surface of the slide cover and guided by the ridge. A power adapter, which is provided. The power adapter according to claim 1 or 2,
A power supply adapter between the slide cover and the case, comprising a lock mechanism for positioning and stopping the slide cover at that position when the slide cover covers either the first terminal portion or the second terminal portion. The power adapter according to claim 4,
The power adapter, wherein the lock mechanism includes a stopper protruding from a slide path of a slide cover of the case, and an engagement protrusion protruding from an inner surface of the slide cover and engaging with the stopper. . The power adapter according to claim 1,
One of the first terminal portion and the second terminal portion is a DC terminal portion, and the other is an AC terminal portion.

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