JP2010262872A - Electric apparatus with conversion plug - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve reliability by fixing an elastic contact on a conversion plug blade simply and surely. <P>SOLUTION: The electric apparatus with a conversion plug has a conversion plug combined detachably with an AC plug of an apparatus body. The conversion plug includes a conversion plug blade 21 fixed on a surface plate part 23 of an insulative holder and an elastic contact 26 contacting elastically with the plug blade 21. The elastic contact 26 includes a bent fixing part 26B on the one end of a parallel plate part 26A parallel with the conversion plug blade 21 and an elastic arm part 26C on the other end. The bent fixing part 26B has a wider width than the elastic arm part 26C, and includes a pair of through-holes 26D into which a pair of combining convex parts 21A arranged on the end part of the conversion plug blade 21 are inserted and each of the combining convex parts 21A is arranged outside of the elastic arm part 26C. In the conversion plug, the combining convex part 21A is bending-processed and the bent fixing part 26B is fixed on the surface plate part 23 of the insulative holder. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an electric device that inserts a plug into a power outlet and obtains electric power from a commercial power source, and more particularly to an electric device in which a conversion plug is detachably connected.

  An electric device such as a charger that supplies power from a commercial power source is used with a plug connected to a power outlet. Standards for commercial power supply differ depending on the country or region in which they are used, and in addition to voltage and frequency, the shape of the plug insertion hole and the plug inserted into the outlet are different. Therefore, it is necessary to design plugs for electrical equipment with different specifications when used in different countries and regions. However, if different electrical devices with different plug shapes are created for each country, they can be used only in specific countries.

  In order to eliminate this drawback, the present applicant has developed an electric apparatus having a conversion plug shown in FIG. (See Patent Document 1)

JP 2007-52998 A

  The electrical device shown in FIGS. 1 and 2 is connected to the device main body 90 so that the conversion plug 80 can be attached and detached. The electrical devices shown in these figures can be used in Japanese outlets with the conversion plug 80 removed, and the conversion plug 80 to be connected can be used in various countries in a shape that matches the outlet in each country. In the conversion plug 80, a conversion plug blade 81 having a shape suitable for the country of use is fixed to the insulating holder 82. Further, the insulating holder 82 is provided with a plug insertion portion 83 into which the plug blade 92 of the device main body 90 is inserted. The conversion plug 80 is electrically connected to the plug blade 92 in a state where the plug blade 92 of the device main body 90 is inserted into the plug insertion portion 83. Therefore, when the conversion plug blade 81 is inserted into the outlet of each country, the plug blade 92 of the device main body 90 is connected to the power supply contact (not shown) of the outlet via the conversion plug blade 81.

  The conversion plug 80 having this structure includes an elastic contact 84 for connecting the conversion plug blade 81 to the plug blade 92 in a state where the plug blade 92 is inserted into the plug insertion portion 83. The elastic contact 84 is a conductive metal plate, and a conversion plug blade 81 is inserted into a cylindrical portion 84A provided at one end and is fixed by caulking. Furthermore, the elastic contact 84 has a structure in which an elastic arm portion 84B is provided at the other end, and is elastically pressed and electrically connected to the plug blade 92 inserted into the plug insertion portion 83. This conversion plug 80 has a drawback that it is difficult to securely fix the elastic contact 84 of the metal plate to the rod-shaped conversion plug blade 81. That is, the structure in which the cylindrical portion 84A of the metal plate that is the elastic contact 84 is crimped and fixed to the conversion plug blade 81 is configured such that the conversion plug blade 81 is clamped and fixed by slight restoration of the crimped cylindrical portion 84A. This is because the state is released.

  The present inventor has developed a conversion plug 70 having the structure shown in FIGS. 3 and 4 in order to eliminate this drawback. In this conversion plug 70, one end of the elastic contact 74 is bent in an L shape to provide a bent fixing portion 74A, and a through hole 74a is provided in the central portion of the bent fixing portion 74A. Furthermore, at the rear end of the conversion plug blade 71, a pair of connecting convex portions 71A to be inserted into the through hole 74a is provided. In this structure, a pair of connecting projections 71A of the conversion plug blade 71 are inserted into the through holes 74a, and each connecting projection 71A is bent outward so that the elastic contact 74 can be easily and easily converted into a conversion plug. It can be fixed to the blade 71. In particular, as shown in FIG. 4, the conversion plug 70 having this structure can be securely fixed to the elastic contact 74 by pressing with a press die 79 and bending the pair of connecting projections 71A. It has the feature that it can be fixed easily, easily and securely. However, since the elastic arm portion 74B of the elastic contact 74 becomes an obstacle when the connecting convex portion 71A is pressed by the press die 79, the elastic convex portion 74B is deformed to a position that does not interfere with the press die 79, and the connecting convex portion is deformed. After 71A is bent and bent, it is necessary to correct the elastic arm portion 74B again to a predetermined position, which requires a troublesome correction of the elastic arm portion 74B. In addition, the elastic arm portion 74B that is corrected to a predetermined position after bending the connecting convex portion 71A is likely to be shifted in the correction position, thereby reducing the reliability of the electrical connection with the plug blade inserted into the plug insertion portion. There are drawbacks.

  The present invention has been developed for the purpose of solving this drawback. An important object of the present invention is to provide a conversion capable of improving the reliability of the electrical connection between the elastic contact and the plug blade inserted into the plug insertion portion while easily and easily fixing the elastic contact to the conversion plug blade. An object of the present invention is to provide an electric device including a plug.

Means for Solving the Problems and Effects of the Invention

  An electrical device having a conversion plug according to the present invention includes a device main body 100 including an AC plug 11 having a pair of plug blades 12, and a conversion plug 20 that is detachably connected to the AC plug 11 of the device main body 100. ing. The conversion plug 20 includes an insulation holder 22 having a plug insertion portion 25 for inserting the plug blade 12 of the AC plug 11, a conversion plug blade 21 fixed to the insulation holder 22, and a conversion plug blade 21 fixed to the conversion plug blade 21. And an elastic contact 26 that is elastically pressed and brought into contact with the plug blade 12 inserted into the plug insertion portion 25 of the insulating holder 22. The conversion plug blade 21 is provided with a pair of connecting projections 21 </ b> A at the end where the elastic contact 26 is connected. The insulating holder 22 has a surface plate part 23 that fixes the conversion plug blade 21 so as to protrude outward and inward, and the conversion plug blade 21A protrudes the connecting convex part 21A inside the surface plate part 23. 21 is fixed. The elastic contact 26 is an elastic metal plate, and the elastic contact 26 of this elastic metal plate extends in the longitudinal direction of the conversion plug blade 21 and is arranged in a posture parallel to the conversion plug blade 21. It consists of a bent fixing portion 26B which is bent in an L shape provided at one end of the parallel plate portion 26A, and an elastic arm portion 26C provided at the other end of the parallel plate portion 26A. The bending fixing portion 26B is wider than the elastic arm portion 26C, and a pair of through holes 26D for inserting the respective connecting projections 21A provided on the conversion plug blade 21 are provided on both lateral portions thereof. The connecting convex portion 21A to be inserted into the elastic arm portion 26C is disposed outside the both side edges. In the conversion plug 20, the connecting convex portion 21 </ b> A is bent, and the bent fixing portion 26 </ b> B of the elastic contact 26 is fixed to the surface plate portion 23 of the insulating holder.

  The above electrical equipment has a feature that the reliability of electrical connection between the elastic contact and the plug blade inserted into the plug insertion portion can be improved while the elastic contact is easily and easily fixed to the conversion plug blade. . The above-mentioned electrical equipment is provided with a pair of connecting projections on the conversion plug blade that is fixed so as to protrude from the surface plate portion of the insulating holder, and the bending fixing portion of the elastic contact has an elastic arm with its lateral width. A pair of through-holes are provided on both sides of each of the connecting projections so that each of the connecting projections is inserted, and the connecting projections inserted into the through-holes are disposed outside both side edges of the elastic arm portion. This is because these connecting convex portions are bent and the bent fixing portion is fixed to the surface plate portion of the insulating holder. In addition to bending the pair of connecting projections and fixing them to the insulating holder, the conversion plug of this structure can be arranged at a position where it does not interfere with the press mold, so the connecting projections can be formed with a press die. There is no need to modify the elastic arm after bending. For this reason, it is not necessary to correct the elastic arm portion after fixing the conversion plug blade. For this reason, it does not require time and effort for post-processing of the bending process, and the position of the elastic arm part is not shifted, and the elastic metal plate is securely pressed against the plug blade inserted into the plug insertion part for electrical connection. Features that can be realized.

In the electric device having the conversion plug of the present invention, the elastic arm portion 26C can be a U-curved elastic arm portion formed by U-bending in the bending direction of the bending fixing portion 26B.
Since the above-described electric device has the U-curved elastic arm portion as the elastic arm portion, there is a feature that the elastic contact can be more reliably and stably electrically connected to the plug blade inserted into the plug insertion portion.

In the electric device having the conversion plug of the present invention, the lateral width (W1) of the elastic arm portion 26C can be made narrower than the inner width (W2) of the pair of through holes 26D.
The above electric device has a feature that the elastic contact can be more securely fixed to the conversion plug blade and the insulating holder because the angle of bending the pair of connecting projections can be increased with a press die.

In the electric device having the conversion plug according to the present invention, the bending fixing portion 26B can be fixed to the surface plate portion 23 of the insulating holder 22 by the connecting convex portion 21A formed by bending the tip portions in a direction approaching each other. it can.
This electric device has a feature that the bent fixing portion of the elastic contact can be more reliably fixed to the conversion plug blade and the insulating holder.

The electrical device having the conversion plug of the present invention can include the insulating holder 22 having the surface plate portion 23 and the cover case 24 in which the opening portion is closed by the surface plate portion 23. Further, elastic locking arms 23C protruding toward the inside of the cover case 24 are integrally formed at both ends in the longitudinal direction of the surface plate portion 23, and the elastic locking arms 23C are provided on the cover case 24. A locking recess 24D for locking can be provided on the inner surface, and the elastic locking arm 23C can be guided to the locking recess 24D to connect the surface plate portion 23 to the cover case 24.
The above electric devices can reliably connect the surface plate portion of the conversion plug to the cover case. Further, the structure in which the surface plate portion is fixed to the cover case with screws or the like has a feature that the surface plate portion can be connected so as not to be detached from the cover case even if the screws are loosened.

In the electric device having the conversion plug of the present invention, the parallel plate portion 26A of the elastic contact 26 is provided with a guide slit 26E that guides the elastic locking arm 23C in a tiltable manner, and the elastic locking arm 23C is attached to the guide slit 26E. The elastic contact 26 can be fixed to the surface plate portion 23 so as to be guided.
The above electric device has a feature that an elastic locking arm is provided on the surface plate portion without enlarging the cover case, and the surface plate and the cover case can be connected by the elastic locking arm.

It is a disassembled perspective view of the electric equipment which has the conversion plug for which this applicant applied previously. It is an expanded sectional view which shows the state which mounted | wore the apparatus main body with the conversion plug of the electric equipment which has the conversion plug shown in FIG. It is a perspective view of the conversion plug which this inventor developed previously. It is an expanded sectional view which shows the process of fixing the elastic contact of the conversion plug shown in FIG. It is a perspective view of the electric equipment which has a conversion plug shown in one example of the present invention. It is a back perspective view of the electric equipment which has a conversion plug shown in FIG. It is a disassembled perspective view of the conversion plug and apparatus main body of an electric equipment which have the conversion plug shown in FIG. It is a perspective view of an apparatus main body. FIG. 9 is a rear perspective view illustrating a state in which a prismatic battery pack is attached to the device main body illustrated in FIG. 8. It is a disassembled perspective view of the apparatus main body shown in FIG. It is a perspective view of a conversion plug. FIG. 12 is a rear perspective view of the conversion plug shown in FIG. 11. It is an expanded sectional view which shows the connection structure of a conversion plug and an apparatus main body. It is a perspective view which shows the connection structure of the conversion plug blade and elastic contact of a conversion plug. It is sectional drawing which shows the process of connecting a conversion plug blade to an elastic contact. It is sectional drawing which shows the process of connecting a conversion plug blade to an elastic contact. It is a perspective view of an elastic contact. FIG. 8 is a cross-sectional perspective view of the conversion plug and device body shown in FIG. 7. It is a cross-sectional perspective view which shows the process of connecting the conversion plug shown in FIG. 18 to an apparatus main body. FIG. 20 is a cross-sectional perspective view showing a state where the conversion plug shown in FIG. 19 is connected to the device main body.

  Embodiments of the present invention will be described below with reference to the drawings. However, the embodiments shown below exemplify an electric device having a conversion plug for embodying the technical idea of the present invention, and the present invention does not specify an electric device having a conversion plug as the following. .

  Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

The electric device shown in FIGS. 5 to 10 includes a device main body 100 connected so that the AC plug 11 can be tilted, and a conversion plug 20 connected so as to be attached to and detached from the AC plug 11 of the device main body 100. . In the electrical equipment shown in these drawings, as shown in FIG. 7, the conversion plug 20 is removed and the AC plug 11 is connected to a power outlet (not shown). Further, as shown in FIGS. 5 and 6, the conversion plug 20 is connected to the AC plug 11 and is connected to a power outlet (not shown) having a shape different from that of the AC plug 11.
In the following example, an example will be described in which the device main body 100 is applied to a charger for a square pack battery that is a secondary battery. However, it goes without saying that the present invention is not limited to a charger, and can be used as appropriate for other electrical devices that receive power from a commercial power outlet.

  As shown in FIGS. 8 and 9, the device main body 100 that is a charger is provided with an attachment / detachment recess 40 in the exterior case 10 for charging the prismatic battery pack 41 detachably. The outer case 10 is made of plastic, and the upper case 10A and the lower case 10B are separately molded and connected. The exterior case 10 shown in the figure has an upper case 10A and a lower case 10B each having a square planar shape, and an outer peripheral wall is integrally formed, and the outer peripheral walls are connected to each other. The lower case 10B is connected to the bottom so that the AC plug 11 inserted so as to be detachable from a commercial power outlet can be folded.

  The charger shown in the figure has a structure in which different types of prismatic battery packs 41 are detachably mounted and charged. As shown in FIG. 9, this charger has a different outer shape and allows the first rectangular battery pack 41A and the second rectangular battery pack 41B having electrode terminals 43 on the outer peripheral terminal surface 42 to be detachable. It is structured to be set and charged. However, the device main body, which is a charger, can be structured to be charged by mounting one type of prismatic battery pack, or can be structured to be charged by mounting one or more cylindrical secondary batteries.

  As shown in FIGS. 8 to 10, the device main body 100 that is a charger has a first peripheral wall 44 </ b> A disposed adjacent to each other so as to be orthogonal to each other, with the inner shape of the opening of the attachment / detachment recess 40 being a quadrangle. The second peripheral wall 44B is provided, the first peripheral wall 44A is provided with the first charging terminal 45A that contacts the electrode terminal 43A of the first rectangular battery pack 41A, and the second peripheral wall 44B is provided with the second square shape. Second charging terminals 45B that are in contact with the electrode terminals 43B of the battery pack 41B are provided. Further, as shown in FIG. 9, the detachable recess 40 is set with the first rectangular battery pack 41A and the second rectangular battery pack 42B in a posture in which the terminal surfaces 42A and 42B are rotated by 90 degrees, Each electrode terminal 43 </ b> A, 43 </ b> B has an inner shape that can contact the charging terminal 45. As shown in FIG. 9, the first rectangular battery pack 41A is charged through the first charging terminal 45A by setting the electrode terminal 43A in the attachment / detachment recess 40 in such a posture as to contact the first charging terminal 45A. . The second prismatic battery 41B is set in the attachment / detachment recess 40 with the electrode terminal 43B in contact with the second charging terminal 45B, and is charged via the second charging terminal 45B.

  The AC plug 11 shown in FIGS. 7 and 10 has a plug blade 12 made of a pair of planar metal plates fixed to an insulating turntable 13 made of plastic. The insulated turntable 13 is connected so that the rotating shaft 16 which protrudes at both ends can be rotated to the apparatus main body 100. FIG. Via this insulated turntable 13, the AC plug 11 is connected to the apparatus main body 100 so that it can tilt. Further, although not shown, the pair of plug blades 12 are connected to a power supply circuit built in the apparatus main body 100 to supply commercial power to the power supply circuit. And the power supply circuit has the characteristic which can respond to the specification of the commercial power of the countries of the world.

The AC plug 11 connects the rotary shaft 16 of the insulated turntable 13 to the device main body 100 so that the AC plug 11 can tilt in a plane parallel to both surfaces of the plug blade 12. As shown in the exploded perspective view of FIG. 10, the AC plug 11 tilting in this posture is integrally formed with the rotating shaft 16 at both ends of the plastic insulating turntable 13 so as to be orthogonal to both surfaces of the plug blade 12. Provided. The pair of rotary shafts 16 are located at the rear end of the plug blade 12 and are arranged on a straight line. A rotation hole (not shown) that supports the rotation shaft 16 so as to be rotatable is provided in the device main body 100. The AC plug 11 is connected to the device main body 100 so that the rotary shaft 16 is supported in the rotation hole and can rotate.
In the present embodiment, due to the internal structure (not shown), when the plug blade 12 is folded, the electric circuit inside the electronic device and the plug blade 12 are not electrically connected. In the state where the plug blade 12 is raised, the electric circuit inside the electronic device and the plug blade 12 are electrically connected.

  The apparatus main body 100 is provided with a guide space 14 that opens on the surface for storing the plug blade 12 of the AC plug 11 in a folded state. As shown in FIG. 8, the AC plug 11 does not protrude from the device main body 100 in a folded state. The apparatus main body 100 of FIG. 7 arrange | positions the folded AC plug 11 in the upper part. Therefore, the guide space 14 is provided in the upper surface of the apparatus main body 100 as shown in FIG. Since the AC plug 11 has a pair of plug blades 12, in order to store the pair of plug blades 12, the guide space 14 includes a first space 14A and a second space 14B for separately storing each plug blade 12. Have. Since the AC plug 11 rotates and tilts in a plane including both surfaces of the plug blade 12, the width of the first space 14A and the second space 14B of the guide space 14 is a groove shape larger than the thickness of the plug blade 12. Provided.

  Since the AC plug 11 tilts in a plane parallel to both surfaces of the plug blade 12, the first space 14 </ b> A and the second space 14 </ b> B that separately store the pair of plug blades 12 are perpendicular to the tilting surface of the plug blade 12. Can be narrowed.

  As shown in FIGS. 11 and 12, the conversion plug 20 has a pair of conversion plug blades 21 fixed to an insulating holder 22. The conversion plug blade 21 is a metal plate like the plug blade. The insulating holder 22 is made of plastic and includes a surface plate portion 23 and a cover case 24 whose opening is blocked by the surface plate portion 23.

  The surface plate portion 23 is a rectangular plate shape, and the conversion plug blade 21 is insert-molded so as to penetrate the surface plate portion 23 and fixed so that one end of the conversion plug blade 21 protrudes outside and the other end protrudes inward. Yes. The conversion plug blade 21 protruding outward from the surface plate portion 23 has a shape to be inserted into an outlet in each country.

  The cover case 24 is made of plastic in a rectangular tube shape with one end closed by a bottom plate 24A and the other end opened. The opening of the cover case 24 is closed by the surface plate portion 23. The cover case 24 is provided with a screw boss 24B for fixing the surface plate portion 23 with a set screw 29 so as to protrude from the bottom plate 24A to the inner surface. The screw boss 24 </ b> B is screwed with a set screw 29 that penetrates the surface plate portion 23 to fix the surface plate portion 23 to the cover case 24. The surface plate portion 23 is provided with a screw hole 23A into which a set screw 29 is inserted at the center. Furthermore, the cover case 24 shown in the cross-sectional view of FIG. 13 is provided with a step recess 24 </ b> C in which the surface plate portion 23 is fitted along the periphery of the opening. The step recess 24C has an inner shape substantially equal to the outer shape of the surface plate portion 23, and the depth is defined as the thickness of the outer peripheral portion 23B of the surface plate portion 23. It is arranged.

  Further, the surface plate portion 23 is provided with an elastic locking arm 23 </ b> C connected to the cover case 24 integrally formed at both ends thereof. The elastic locking arm 23C is provided so as to extend to the inner surface of the surface plate portion 23, and is provided with a hook-shaped locking portion 23D at the tip thereof. In order to hook the locking portion 23D of the elastic locking arm 23C so as not to come off from the cover case 24, a locking recess 24D is provided on the inner surface of the cover case 24. The elastic locking arm 23C elastically guides the locking portion 23D to the locking recess 24D and connects the surface plate portion 23 to the cover case 24 so as not to come off. In this structure, since the surface plate portion 23 is connected to the cover case 24 by both the elastic locking arm 23C and the set screw 29, it is possible to prevent the surface plate portion 23 from being removed even if the set screw 29 is removed. Since the surface plate portion 23 is connected to the cover case 24 by the locking arm 23C and the set screw 29 is screwed in, the surface plate portion 23 can be easily fixed to the cover case 24 with the set screw 29. However, the surface plate does not necessarily need to be fixed to the cover case with a set screw or an elastic locking arm, and can be fixed by, for example, bonding or another locking structure.

  The cover case 24 is provided with an insertion hole 24E for the plug blade 12 in the bottom plate 24A, and serves as a plug insertion portion 25 into which the plug blade 12 is inserted. Further, the cover case 24 shown in the sectional view of FIG. 13 is provided with a guide 24F of the plug blade 12 that is integrally formed so as to protrude from the inner surface of the bottom plate 24A. The guide 24F is located on both sides of the plug blade 12 inserted into the insertion hole 24E, and is provided at a position where the plug blade 12 is inserted along this. The plug insertion portion 25 can be inserted in a posture in which the plug blade 12 to be inserted is not inclined.

  In the conversion plug 20 of FIG. 13, the distance between the conversion plug blade 21 and the plug blade 12 is substantially equal, and the conversion plug blade 21 and the plug blade 12 are arranged substantially linearly. The insulating holder 22 is arranged so that the conversion plug blade 21 and the plug blade 12 arranged substantially linearly do not collide, that is, in a state where the plug blade 12 is inserted, so that it does not contact the conversion plug blade 21. Between the plug blade 12 and the conversion plug blade 21, a contact space 27 in which the elastic contact 26 is disposed is provided.

  As shown in FIG. 14, the conversion plug blade 21 is provided with a pair of connecting convex portions 21 </ b> A at a portion protruding inside the surface plate portion 23. The connecting convex portions 21A are provided at both ends of the conversion plug blade 21 made of a metal plate. The connecting convex portion 21 </ b> A is provided so as to protrude from the flat surface on the inner surface of the surface plate portion 23. The connecting convex portion 21A in FIG. 15 has a tapered shape with a width narrowing toward the tip. Further, the pair of connecting convex portions 21A are inclined in a direction in which the inner edges facing each other are parallel and the outer side is narrowed toward the tip. The connecting convex portion 21A can be smoothly bent by pressing the outer inclined surface 21a with the press die 50. The pair of connecting convex portions 21 </ b> A are bent to fix the elastic contact 26 to the surface plate portion 23 of the insulating holder 22. The connecting convex portions 21A are bent inward or outward to fix the elastic contact 26. In the conversion plug of FIG. 16, the elastic contact 26 is fixed by bending the tip end portions of the connecting convex portions 21 </ b> A inward so as to approach each other. The connecting convex portion can be bent outward so that the tip portions are separated from each other, thereby fixing the elastic contact.

  In the conversion plug 20, an elastic contact 26 that electrically connects the conversion plug blade 21 to the plug blade 12 inserted in the plug insertion portion 25 is fixed to the conversion plug blade 21. The elastic contact 26 is a metal plate that can be elastically deformed. An elastic contact 26 made of an elastic metal plate is shown in the perspective view of FIG. The elastic contact 26 extends in the longitudinal direction of the conversion plug blade 21 and has a parallel plate portion 26A disposed in a posture parallel to the conversion plug blade 21 and an L-shape provided at one end of the parallel plate portion 26A. It consists of a bent fixing part 26B that is bent, and an elastic arm part 26C provided at the other end of the parallel plate part 26A.

  The bending fixing portion 26B has a lateral width wider than that of the elastic arm portion 26C, and a pair of through holes 26D into which the respective connecting convex portions 21A provided on the conversion plug blade 21 are inserted are provided on both lateral portions thereof. Yes. The through hole 26D is provided at a position where the pair of connecting convex portions 21A inserted therein are arranged outside the both side edges of the elastic arm portion 26C. In order to arrange the through hole 26D outside the both side edges of the elastic arm portion 26C, the lateral width of the bent fixing portion 26B is made wider than the lateral width of the elastic arm portion 26C. The pair of connecting convex portions 21A are arranged outside the side edge of the elastic arm portion 26C because the elastic arm portion 26C is guided to the slit 51 of the press die 50 as shown in FIGS. This is because the mold 50 is pressed toward the connecting convex portion 21A to bend the connecting convex portion 21A. The conversion plug 20 of FIG. 15 has the entire connecting convex portion 21A inserted into the through hole 26D with the width (W1) of the elastic arm portion 26C being narrower than the inner width (W2) of the pair of through holes 26D. Is disposed outside the both side edges of the elastic arm portion 26C. According to this structure, the bending angle of the connecting convex portion 21A by the press die 50 can be increased, and the bending fixing portion 26B of the elastic contact 26 can be more reliably fixed to the inner surface of the surface plate portion 23. Moreover, according to this structure, although not shown in the figure, it is also possible to bend the connecting convex portion outward with a press die and fix the bent fixing portion to the surface plate portion. However, in the present invention, it is not always necessary to place the entire connecting convex portion on both side edges of the elastic arm portion. A part of the connecting convex part is arranged outside the both side edges of the elastic arm part, the part located outside the elastic arm part is pressed with a press die, bent inside, and bent and fixed. This is because can be fixed to the surface plate portion. Therefore, although the connection convex part is arrange | positioned outside the both-sides edge of an elastic arm part, the whole or one part can be arrange | positioned outside a both-sides edge.

  The parallel plate portion 26A is provided with a guide slit 26E for guiding the elastic locking arm 23C so that it can tilt. The elastic locking arm 23C guided by the guide slit 26E does not contact the elastic contact 26. Accordingly, the elastic locking arm 23C disposed in the guide slit 26E is elastically deformed itself without being affected by the deformation of the elastic contact 26, and the locking portion 23D at the tip is locked into the locking recess 24D of the cover case 24. Connect them so that they cannot be pulled out.

  The parallel plate portion 26 </ b> A arranges the elastic arm portion 26 </ b> C in the contact space 27. The elastic contact 26 of FIGS. 13 and 14 uses the elastic arm portion 26C as a U-curved elastic arm portion that is U-bent in the bending direction of the bending fixing portion 26B. In the elastic contact 26 of FIGS. 13 and 14, the bending fixing portion 26B and the elastic elastic arm portion 26C are bent in a direction approaching each other. The elastic arm portion 26 </ b> C formed of a U-curved elastic arm portion is elastically pressed to the plug blade 12 inserted into the plug insertion portion 25 in a preferable state by extending the elastically deformable region. For this reason, the poor contact of the elastic arm portion 26C can be prevented and the plug blade 12 can be electrically connected. However, the elastic arm portion does not necessarily have to be a U-curved elastic arm portion, and the tip of the parallel plate portion may be bent into a mountain shape.

  Furthermore, the insulating holder 22 of the conversion plug 20 is in a state in which the plug blade 12 of the AC plug 11 is inserted into the plug insertion portion 25, in other words, in a state in which the conversion plug 20 is connected to the device main body 100. 11 is provided. The locking arm 34 is locked to the locking recess 15 provided on the insulating turntable 13 of the AC plug 11 to connect the conversion plug 20 to the device main body 100.

  In order to connect the locking arm 34 of the conversion plug 20, the AC plug 11 of the device main body 100 is provided with a locking recess 15 in the insulating turntable 13. The insulated turntable 13 is provided with a locking recess 15 between the plug blades 12. The insulated turntable 13 of the AC plug 11 engages and locks the locking arm 34 with the locking recess 15 with the plug blade 12 raised vertically. Therefore, as shown in FIG. 7, the insulated turntable 13 is provided with a locking recess 15 that opens on the surface side of the device main body 100 with the plug blade 12 raised in a vertical posture. The insulated turntable 13 does not need to be provided with the locking recess 15 on the surface side of the device main body 100 when the plug blade 12 is folded in a horizontal position. For this reason, the insulating turntable 13 has a flat surface that is the surface of the device main body 100 with the plug blade 12 folded.

  The locking recess 15 is locked by inserting the locking arm 34 and moving it in the direction indicated by the arrow in FIG. As shown in the cross-sectional perspective views of FIGS. 18 to 20, the locking recess 15 is configured to lock the locking arm 34 of the conversion plug 20 by narrowing the opening. The locking recess 15 in the figure moves the conversion plug 20 in the direction indicated by the arrow in FIG. 19 to lock the locking arm 34. Therefore, the locking recess 15 has a bottom that is wide in the direction indicated by the arrow in FIG. That is, the locking recess 15 has a deep bottom.

  The locking arm 34 of the conversion plug 20 is shown in FIG. The locking arm 34 is provided so as to protrude from the surface of the insulating holder 22. Further, the locking arm 34 is disposed between the openings of the plug insertion portion 25 so as to be connected to the locking recess 15 provided between the plug blades 12. The locking arm 34 has a lower end portion protruding in the direction of movement of the conversion plug 20, that is, in a direction parallel to both surfaces of the plug blade 12, and has a hook shape with an L shape in cross section. The locking arm 34 shown in FIG. 19 moves the conversion plug 20 in the direction indicated by the arrow in FIG. 19 and locks the conversion plug 20 in the locking recess 15, so that the distal end protrudes in the direction indicated by the arrow in FIG. 19.

  In the illustrated conversion plug 20, the locking arm 34 is locked to the device main body 100 and connected to the device main body 100, and the conversion plug 20 and the device main body 100 are connected so as to be detachable via the lock mechanism 30. Yes. The lock mechanism 30 includes a lock hook 31 provided on the device main body 100, a lock engaging portion 32 provided on the conversion plug 20, and a stopper 33 that stops in a state where the lock hook 31 is connected to the lock engaging portion 32. Is provided.

  As shown in FIG. 7, the lock hook 31 is disposed between the first space 14A and the second space 14B. In the figure, a first space 14A and a second space 14B are provided in the upper part of the back surface of the exterior case 10 of the device main body 100, and a quadrangular prism-shaped protrusion 17 is provided therebetween. However, the protruding portion 17 protrudes from the bottom surfaces of the first space 14A and the second space 14B, but does not protrude from the back surface of the device main body 100. A cylindrical recess is provided at the center of the protrusion 17 and a screw head is inserted into the recess to fasten the upper case 10A and the lower case 10B. The projecting portion 17 of the quadrangular column is formed as a lock hook 31 by integrally forming a protrusion on the upper portion of one surface, that is, the upper surface of the quadrangular column in FIG.

  Further, the projection 17 of the quadrangular prism is provided with a stopper 33 on the front side of the lock hook 31. The stopper 33 stops the lock locking portion 32 of the conversion plug 20 in the locked state with the lock hook 31. In order to provide the stopper 33, in the apparatus main body 100 shown in the drawing, the bottom surface 18 is located on the same plane as the bottom surfaces of the recesses of the first space 14A and the second space 14B, and becomes the bottom plate 18. Yes. The bottom plate 18 is provided with a stopper opening 18A that elastically protrudes the stopper 33 upward. The stopper opening 18A is opened away from the back surface of the projecting portion 17 of the quadrangular prism. This is because the stopper 33, the projection 17 of the square pillar, the protrusions of the lock hook 31 and the bottom plate 18 surround the lock locking portion 32 of the conversion plug 20 and hold it so as not to come off.

  The stopper 33 is integrally formed of plastic as a whole. The stopper 33 in FIG. 10 includes a protruding portion 33A that protrudes from the stopper opening 18A of the bottom plate 18, a locking portion 33B that stops the protruding position of the protruding portion 33A, and an elastic arm 33C that protrudes downward. The stopper 33 is elastically pushed up by the integrally formed elastic arm 33 </ b> C so that the protruding portion 33 </ b> A protrudes from the stopper opening 18 </ b> A of the bottom plate 18. The elastic arm 33C has a substantially U-shape (see FIG. 10), and the distal end portion of the elastic arm 33C is pushed and bent inside the lower case 10B to generate an elastic force. The locking portion 33B contacts the inner surface of the bottom plate 18 and specifies the protruding amount of the protruding portion 33A. The stopper 33 attaches / detaches the lock hook 31 to / from the lock engaging portion 32 in a state where the protruding portion 33A is pushed down.

  As shown in FIG. 12, in the conversion plug 20, the first connection protrusion 35 inserted into the first space 14A of the device body 100 and the second connection protrusion 36 inserted into the second space 14B are integrated with plastic. It is molded and provided. The conversion plug 20 shown in the figure is formed integrally with the insulating holder 22 and is provided with a first connection protrusion 35 and a second connection protrusion 36.

  The first connection protrusion 35 and the second connection protrusion 36 are provided so as to protrude from the bottom surface of the cover case 24 of the insulating holder 22 (in the forward direction in FIG. 12). Further, the first connection protrusion 35 and the second connection protrusion 36 are provided so as to protrude downward in the direction in which the conversion plug 20 is inserted into the AC plug 11, in FIGS. 18 to 20, so that the conversion plug 20 is connected to the AC plug 11. Are inserted into the first space 14A and the second space 14B.

  Moreover, the 1st connection protrusion part 35 and the 2nd connection protrusion part 36 of such a structure are prevented so that a user cannot use it incorrectly as follows. When the user attempts to insert a plug blade socket (not shown) separately prepared into the plug insertion portion 25 of the conversion plug 20 using only the conversion plug 20, the plug blade socket The main body hits the first connecting protrusion 35 and the second connecting protrusion 36, and the socket cannot be normally inserted. Therefore, an electronic device (not shown) to which power is supplied from the socket cannot be used, and an electronic device (for example, 100V specification) that does not correspond to the electrical specification (for example, 240V) of Conversion Plus 20 is used. Therefore, a high voltage is applied to the electronic device due to incorrect use, and the electronic device is not electrically destroyed.

  In the conversion plug 20 of FIG. 12, a rib 37 for connecting the first connection protrusion 35 and the second connection protrusion 36 is formed integrally with the insulating holder 22 of the device main body 100, and a lock locking portion 32 is provided. Yes. The rib 37 is provided with a locking hole for locking the lock hook 31 to form a lock locking portion 32. The lock engaging portion 32 is engaged with the lock hook 31 by inserting the protrusions of the lock hook 31 into the engagement holes. The conversion plug 20 having this structure reinforces the first connecting protrusion 35 and the second connecting protrusion 36 by connecting them with ribs 37 serving as the lock engaging portions 32. For this reason, the deformation | transformation of the 1st connection protrusion part 35 and the 2nd connection protrusion part 36 is prevented, these are correctly guided to the 1st space 14A and the 2nd space 14B, and the conversion plug 20 is attached to the apparatus main body 100. Link.

  The rib 37 abuts against the protrusion 33A of the stopper 33, so that the protrusion 33A is lowered from the stopper opening 18A of the bottom plate 18, the lock hook 31 is attached to the lock engaging portion 32, and the conversion plug 20 is attached to the device main body 100. Can be attached to. When the conversion plug 20 is attached to the apparatus main body 100, the rib 37 does not contact the stopper 33, so that the protruding portion 33 A protrudes from the stopper opening 18 A of the bottom plate 18, and the protruding portion 33 A and the locking step portion 38 of the conversion plug 20. By engaging (see FIG. 20), the conversion plug 20 is prevented from coming out upward.

  Further, the insulating holder 22 of the conversion plug 20 shown in FIGS. 7 and 12 has the connection rib 24G inserted into the connection recess 19 provided on the bottom surface of the exterior case 10 in a state where the conversion plug 20 is connected to the device main body 100. The cover case 24 protrudes from the bottom surface. The connecting rib 24G shown in the figure is integrally formed on one side edge of the bottom plate 24A of the cover case 24 in a posture parallel to the first connecting protrusion 35 and the second connecting protrusion 36. Furthermore, the exterior case 10 shown in FIG. 7 is provided with an elongated groove-shaped connecting recess 19 along the side edge of the main body case 10 at the side edge of the bottom surface of the main body case 10B. This connection recessed part 19 is provided in the position which can guide the connection rib 24G of the conversion plug 20 with which the apparatus main body 100 is mounted | worn. In the state where the connecting rib 24G is inserted, the connecting recess 19 inserts the connecting rib 24G in the direction in which the locking arm 34 is inserted and locked into the locking recess 15 of the AC plug 11 (vertical direction in FIG. 7). It extends downward so that it can slide. The above connecting rib 24G is inserted into the connecting recess 19 of the main body case 10B in a state where the plug blade 12 is inserted into the conversion plug 20, as shown by the arrow in FIG. 7, and the conversion plug 20 is slid downward. In a state where the locking arm 34 is locked to the locking recess 15 of the AC plug 11, it is moved downward along the connecting recess 19 to guide the conversion plug 20 to a fixed position of the device main body 100.

  As shown in FIGS. 18 to 20, the power supply device described above is used in the following manner to attach the conversion plug 20 to the device main body 100.

  As shown in FIG. 19 from the position shown in FIG. 18, the conversion plug 20 is brought closer to the device main body 100. At this time, the plug blade 12 is inserted into the plug insertion portion 25 and the locking arm 34 is inserted into the locking recess 15. The first connection protrusion 35 is guided to the first space 14A, the second connection protrusion 36 is guided to the second space 14B, and the connection rib 24G is guided to the connection recess 19. Furthermore, the rib 37 connecting the first connecting protrusion 35 and the second connecting protrusion 36 abuts against the protrusion 33A of the stopper 33, thereby pushing down the protrusion 33A.

  Then, as shown by the arrow in FIG. 19, the conversion plug 20 is moved along the surface of the device main body 100 in the direction parallel to the surface of the plug blade 12, so that the position in FIG. 20 is obtained. In this state, the locking arm 34 is locked in the locking recess 15, and the lock hook 31 is locked in the lock locking portion 32. Therefore, the conversion plug 20 and the device main body 100 are locked by the locking arm 34 and the locking recess 15 and are connected so as not to be disconnected by the lock hook 31 and the lock locking portion 32. Further, in this state, the protruding portion 33A protrudes from the stopper opening 18A of the bottom plate 18 by the elastic force of the elastic arm 33C, and the protruding portion 33A engages with the locking step portion 38 of the conversion plug 20, whereby the conversion plug 20 20 is prevented from returning from the position shown in FIG. 20 to the position shown in FIG. 19, and the conversion plug 20 is prevented from coming out upward.

  The conversion plug 20 connected to the device main body 100 is removed from the device main body 100 as follows.

  In FIG. 20, the protruding portion 33 </ b> A of the stopper 33 is pushed into the stopper opening 18 </ b> A of the bottom plate 18 to release the locking state between the protruding portion 33 </ b> A and the locking step portion 38 of the conversion plug 20. In this state, the conversion plug 20 is shifted in the direction opposite to the arrow in FIG. 19 to release the locking state of the locking arm 34 and the locking recess 15, the lock hook 31 and the lock locking portion 32, and conversion. The plug 20 is separated from the device main body 100.

DESCRIPTION OF SYMBOLS 100 ... Equipment main body 10 ... Exterior case 10A ... Main body case
10B ... Body case 11 ... AC plug 12 ... Plug blade 13 ... Insulated turntable 14 ... Guide space 14A ... First space
14B ... Second space 15 ... Locking recess 16 ... Rotating shaft 17 ... Protrusion 18 ... Bottom plate 18A ... Stopper opening 19 ... Connecting recess 20 ... Conversion plug 21 ... Conversion plug blade 21A ... Connecting projection
21a ... Inclined surface 22 ... Insulating holder 23 ... Surface plate part 23A ... Screw hole
23B ... outer periphery
23C ... Elastic locking arm
23D ... Locking portion 24 ... Cover case 24A ... Bottom plate
24B ... Screw boss
24C ... Step recess
24D ... Locking recess
24E ... insertion hole
24F ... Guide
24G ... Connecting rib 25 ... Plug insertion part 26 ... Elastic contact 26A ... Parallel plate part
26B ... Folding fixing part
26C ... Elastic arm
26D ... through hole
26E ... Guide slit 27 ... Contact space 29 ... Set screw 30 ... Lock mechanism 31 ... Lock hook 32 ... Lock locking part 33 ... Stopper 33A ... Protrusion
33B ... Locking part
33C ... Elastic arm 34 ... Locking arm 35 ... First connection protrusion 36 ... Second connection protrusion 37 ... Rib 38 ... Locking step 40 ... Desorption recess 41 ... Square battery pack 41A ... First square battery pack
41B ... Second rectangular battery pack 42 ... Terminal surface 42A ... Terminal surface
42B ... Terminal surface 43 ... Electrode terminal 43A ... Electrode terminal
43B ... Electrode terminal 44 ... Peripheral wall 44A ... First peripheral wall
44B ... Second peripheral wall 45 ... Charging terminal 45A ... First charging terminal
45B ... Second charging terminal 50 ... Press die 51 ... Slit 70 ... Conversion plug 71 ... Conversion plug blade 71A ... Connecting projection 74 ... Elastic contact 74A ... Bending fixing portion
74a ... through hole
74B ... Elastic arm portion 79 ... Press die 80 ... Conversion plug 81 ... Conversion plug blade 82 ... Insulation holder 83 ... Plug insertion portion 84 ... Elastic contact 84A ... Tube portion
84B ... Elastic arm 90 ... Equipment body 92 ... Plug blade

Claims (6)

A device body (100) having an AC plug (11) having a pair of plug blades (12), and a conversion plug (20) detachably connected to the AC plug (11) of the device body (100). Prepared,
The conversion plug (20) includes an insulation holder (22) having a plug insertion part (25) for inserting a plug blade (12) of an AC plug (11), and a conversion plug fixed to the insulation holder (22). The blade (21) and the plug blade (12) fixed to the conversion plug blade (21) and inserted into the plug insertion portion (25) of the insulating holder (22) are elastically pressed and contacted. An elastic contact (26),
The conversion plug blade (21) is provided with a pair of connecting projections (21A) at the end connecting the elastic contacts (26), and the insulating holder (22) is provided with the conversion plug blade ( 21) has a surface plate portion (23) that is fixed so as to protrude outward and inward, and the conversion plug so as to protrude the connecting convex portion (21A) inside the surface plate portion (23). The blade (21) is fixed,
The elastic contact (26) is an elastic metal plate, and the elastic contact (26) of the elastic metal plate extends in the longitudinal direction of the conversion plug blade (21) and is arranged in a posture parallel to the conversion plug blade (21). A parallel plate portion (26A), an L-shaped bent fixing portion (26B) provided at one end of the parallel plate portion (26A), and the other end of the parallel plate portion (26A). It consists of an elastic arm part (26C) provided,
The bent fixing part (26B) is wider than the elastic arm part (26C), and the connecting convex parts (21A) provided on the conversion plug blade (21) are inserted into both lateral parts thereof. A pair of through-holes (26D) are provided, and the connecting protrusions (21A) inserted therein are arranged outside both side edges of the elastic arm part (26C), and the connecting protrusions (21A ) Is bent, and an electric device having a conversion plug formed by fixing the bending fixing portion (26B) of the elastic contact (26) to the surface plate portion (23) of the insulating holder (22).   The electric device having a conversion plug according to claim 1, wherein the elastic arm part (26C) is a U-curved elastic arm part formed by U-bending in the bending direction of the bent fixing part (26B).   The electrical device having a conversion plug according to claim 1, wherein a width (W1) of the elastic arm portion (26C) is narrower than an inner width (W2) of the pair of through holes (26D).   The bent fixing part (26B) of the elastic contact (26) is connected to the surface plate part (23) of the insulating holder (22) by the connecting convex part (21A) formed by bending the tip part in a direction approaching each other. An electric device having the conversion plug according to claim 1, which is fixed.   Elastic locking arms (23C) protruding toward the inside of the cover case (24) are integrally formed at both ends in the longitudinal direction of the surface plate portion (23), and the cover case (24 ) Is provided with a locking recess (24D) on the inner surface for hooking the locking portion (23D) provided at the tip of the elastic locking arm (23C), and the elastic locking arm (23C) is connected to the locking recess (24D). The electric device having the conversion plug according to claim 1, wherein the surface plate portion (23) is connected to the cover case (24).   A guide slit (26E) for tiltably guiding the elastic locking arm (23C) is provided in the parallel plate portion (26A) of the elastic contact (26), and the elastic locking arm is provided in the guide slit (26E). The electric device having a conversion plug according to claim 5, wherein the elastic contact (26) is fixed to the surface plate portion (23) so as to guide (23C).

Images