JPH0562989U - AC inlet fixed part for power connection - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] AC inlet fixing part for power supply connection that can ensure insulation between input power supply and output power supply. [Structure] A having a conductive exposed portion (lead electrode 28) for inputting AC power in a case 5 of a power adapter 1.
A C inlet 2 and a DC output electrode 4 for supplying DC power to an electronic device are provided. Then, in order to insulate between the conductive exposed portion and the electrode, the partition wall 23 made of an insulating material for isolating the conductive exposed portion and the electrode 4 and the AC inlet 2 are provided as a case. It is sandwiched and fixed by the inlet support tools 20 and 20 'formed in the inside 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a battery pack or an AC adapter for portable electronic devices, and particularly to an AC inlet with good insulation between an AC inlet (primary circuit) and an output terminal (secondary circuit) inside the adapter. Regarding the fixing device.

[0002]

[Prior Art]

 Most of the power sources for portable electronic devices are DC power sources from battery packs or AC adapters. In particular, the AC adapter has a built-in AC-DC conversion circuit inside and is configured to be attachable to and detachable from portable electronic devices. The prior art will be described below by taking the AC adapters shown in FIGS. 5 and 6 as an example. FIG. 5 is a front perspective view of the AC adapter, and FIG. 6 is a rear perspective view thereof. Immediately, an AC inlet 2 is provided on the front surface of the adapter body 1, an AC plug 3 is inserted from the outside, and AC power is input. An AC-DC conversion circuit is built in the adapter body 1, and the converted DC output power is connected to the DC output electrode 4. The DC output electrode 4 is configured such that when the adapter body 1 is attached to a portable electronic device, the electrode 4 is connected to a DC power input terminal of the electronic device. As shown in FIG. 6, the electrode 4 is constructed so that a DC power input terminal of an electronic device is brought into contact with and connected to one of the electrode holes 6 formed on the back surface and the side surface of the case 5 or both of them. Has been

FIG. 7 is a perspective view showing a structure in the vicinity of the DC output electrode 4 (hereinafter, simply referred to as an electrode) in the adapter body 1. That is, a groove 7 is formed in the case 5 of the adapter body 1, and an L-shaped electrode retainer 10 composed of a support plate 8 in the vertical direction and a retainer plate 9 in the horizontal direction is formed thereon as shown in the figure. It On the other hand, the L-shaped electrode 4 is inserted along the groove 7 through the gap 11 formed between the groove 7 and the lower end of the support plate 8, and the protrusion 12 formed on the electrode 4 shown in FIG. Thus, the electrode 4 is fixed.

FIG. 8 is a diagram showing an electrode structure of a conventional device. That is, in the electrode 4 fixed by the above-mentioned projection 12, the plate-shaped conductor 13 is welded in a plurality of places by the spot welding 14 or the like in the groove 7 at the tip thereof. Further, a hole 15 is formed at the tip of the welded conductor 13, and a DC output from the AC-DC conversion circuit is soldered to the hole 15 by a lead wire 16. In order to insulate the electrode 4 including the conductor 13 serving as the DC output section from other conductive sections and the AC inlet 2, the DC output section is conventionally covered with an adhesive tape 18 or the like. It is composed. Although the above description has been given for one electrode structure of the DC power output, the description of the other electrode structure is omitted because it is exactly the same.

[0005]

[Problems to be solved by the device]

 In general, electronic devices need to have a sufficient insulation distance between input and output power. Particularly in circuits with different power characteristics such as AC-DC conversion circuits, it is important to take sufficient insulation measures. However, in the above-mentioned AC adapter, since the conductive exposed portion on the DC output side is simply insulated with the adhesive tape, the adhesive tape deteriorates over a long period of use, especially in a high temperature state in the electronic circuit. If exposed for a long time, the adhesive strength will be lost and the adhesive tape will peel off. Further, there is a drawback in that it takes a lot of skill and a lot of man-hours to attach an adhesive tape to an electrode having a complicated shape with unevenness after the electrode on the DC output side is completed.

The present invention has been made to solve the above problems, and an object of the present invention is to connect a power supply capable of sufficiently achieving insulation between input and output with a simple configuration. This is to provide an AC inlet fixing part.

[0007]

[Means for Solving the Problems]

 The gist of the present invention to achieve the above object is to provide a power adapter that is detachably attached to an electronic device, a fixing portion for fixing an AC inlet for connecting an AC power source to the power adapter, and the AC power. At the AC inlet fixing portion for power connection of the power adapter, which has a DC power electrode for converting to DC power and supplying DC power to the electronic device, the AC inlet is provided in the case of the power adapter. For connecting to a power source, and an inlet support for sandwiching and fixing a partition wall for isolating a conductive exposed portion of the AC inlet and the DC power source electrode with an insulating material. It is an AC inlet fixing part.

[0008]

[Action]

 According to the present invention, an AC inlet having a conductive exposed portion for inputting AC power in a case of a power adapter and a DC output electrode for supplying DC power to an electronic device are provided, and the both are mutually connected. Are in close proximity. Therefore, the AC inlet and the partition wall made of an insulating material for isolating the conductive exposed portion of the AC power and the DC output electrode are sandwiched and fixed by the inlet support formed in the case. Therefore, the problem of the mixture of the electric power of both of them or the dielectric breakdown is solved by the present invention.

[0009]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an assembled perspective view showing the internal structure of the case 5 of the adapter body 1. That is, the case 5 of the adapter body 1 has a plug hole 19 into which the AC plug 3 shown in FIG. 5 is inserted, and the AC inlet 2 is provided with an inlet support member 20 provided upright inside the case 5. Fixed by 20 '. The inlet supports 20 and 20 'are provided symmetrically with the plug hole 19 as the center, and the inlet supports 20 and 20' are as shown in the enlarged sectional view of the vicinity of the inlet support shown in FIG. The inlet supports 20, 20 ′ are opposed to each other via a predetermined gap 21. The left and right flanges 22 of the AC inlet 2 are inserted and fixed in the gap 21, and a partition wall 23 made of an insulating material according to the present invention is also inserted and fixed at the same time.

FIG. 3A is a side view of the partition wall 23. In the side view, the partition wall 23 has an L-shape, but as shown in FIG. 1, the partition wall 23 has columns 24, 24 ′ for holding the AC inlet 2 on the back side of the collar 22 and a right angle from the tip thereof. The partition wall surface 25 is formed to have a predetermined length in the direction. Then, FIG. 3B is a diagram showing a partial cross-sectional view of the AC inlet 2, showing a state in which the partition wall 23 is held by the AC inlet 2. That is, in the AC inlet 2, the electrode pin 27 is embedded in the insertion hole 26 into which the AC plug 3 is inserted, and the L-shaped lead electrode 28 is electrically connected to the rear of the electrode pin 27 as illustrated. The partition wall 23 holds the AC inlet 2 in contact with the back surface of the collar 22 and is sandwiched between the columns 24 and 24 ′, and the partition wall surface 25 is constructed so as to cover the lead electrode 28.

FIG. 4 is a sectional view showing a state in which the AC inlet 2 is erected on the case 5. That is, the flange 22 of the AC inlet 2 and the columns 24 and 24 'of the partition wall 23 that sandwiches the AC inlet 2 are overlapped between the inlet support tools 20 and 20' that are erected to face each other, and The part 30 is press-fitted and fixed. The fixing position at this time is a position where the AC inlet 2 faces the plug hole 19 formed in the case 5, and although not shown, the AC plug 3 is inserted into the insertion hole 26 of the AC inlet 2 from the outside. It will be possible. When the AC plug 3 is inserted, the AC power is led to the lead electrode 28 of the AC inlet 2 and, although not shown, is introduced into the AC-DC conversion circuit provided in the case 5 and after the conversion. The DC output power of is connected to the L-shaped electrode 4 via the lead wire 16.

As described above, the conductive exposed portion (lead electrode 28) on the AC input side and the conductive exposed portion (electrode 4) on the DC output side are very close to each other. Therefore, the partition wall 23 described above is press-fitted and fixed between the AC inlet 2 and the inlet support tools 20 and 20 'so that the conductive exposed portion on the AC input side and the conductive exposed portion on the DC output side are insulated from each other. The partition wall 23 made of a material is isolated by the partition wall surface 25 which is bent substantially at a right angle. With such a configuration, the area of the partition wall surface 25 is widened to the extent that it does not come into contact with other parts, so that the edge surface distance becomes large, and the mixing of the AC power input side and the DC power output side, especially AC It is possible to prevent the lightning surge mixed on the power side from mixing on the DC power side. Furthermore, since the partition wall 23 is appropriately bent and press-fitted at the same time as the AC inlet 2 by fixing an insulating material, the structure is simple and it is possible to surely protect from dielectric breakdown.

[0013]

[Effect of the device]

 As described above, since the AC inlet fixing portion for connecting the power source according to the present invention has the inlet support for holding the left and right sides of the flange of the AC inlet standing on the case, the partition wall and the inlet support simultaneously with the AC inlet. By sandwiching it between the two power sources, it is possible to reliably isolate both AC and DC power with a simple configuration, which allows a sufficient insulation distance and prevents the above power from being mixed. There is.

[Brief description of drawings]

FIG. 1 is an assembled perspective view showing an internal structure of a case according to the present invention.

FIG. 2 is an enlarged sectional view of the vicinity of the inlet support according to the present invention.

FIG. 3A is a side view of a partition wall according to the present invention.
(B) is a partial sectional view of the AC inlet according to the present invention.

FIG. 4 is a sectional view of the present invention showing a state where the AC inlet is mounted on the case.

FIG. 5 is a front perspective view of a conventional AC adapter.

FIG. 6 is a rear perspective view of FIG.

FIG. 7 is a perspective view showing a structure around a conventional electrode.

FIG. 8 is a perspective view showing a conventional electrode structure.

[Explanation of symbols]

 1 Adapter Main Body 2 AC Inlet 3 AC Plug 4 DC Output Electrode 5 Case 10 Electrode Presser 13 Conductor 16 Lead Wire 18 Adhesive Tape 19 Plug Hole 20, 20 'Inlet Support Tool 22 Collar 23 Partition Wall 24, 24' Strut 25 Partition Wall Surface 27 Electrode pin

Claims (1)

[Reference number] 0030865-1 [Claims for utility model registration] 1. A power adapter that is detachably formed in an electronic device, a fixing portion for fixing an AC inlet for connecting an AC power source to the power adapter, and the AC power D
In an AC inlet fixing portion for power supply connection of the power supply adapter, which includes a DC output electrode for converting to C power and supplying DC power to the electronic device, the AC inlet in the case of the power supply adapter, An AC for power connection, comprising an inlet support for sandwiching and fixing a partition wall for isolating a conductive exposed portion of the AC inlet and the DC output electrode with an insulating material.
Inlet fixing part.