Foldable wireless charger and manufacturing method therefor

Abstract

The present invention provides a foldable wireless charger and a manufacturing method therefor. The disclosed foldable wireless charger of the present invention comprises: a cover unit formation step that includes the steps of providing a flexible printed circuit board, arranging a fastening guide sheet that includes a plurality of division sheets corresponding to first to third cover units divided in advance, attaching the flexible printed circuit board to the fastening guide sheet, and attaching a cover sheet and a bottom sheet to the upper side and the lower side, respectively, of the flexible printed circuit board to which the fastening guide sheet is attached; a step of attaching, onto the cover unit, first and second charger cases in which first and second charging modules are loaded, respectively; a step of aligning a first top case and a second top case on the first charger case and the second charger case, respectively; and a step of assembling, by means of magnetic force, the first charger case and the first top case, and the second charger case and the second top case.

Description

Foldable wireless charger and manufacturing method thereof

[0001] The present invention relates to a foldable wireless charger and a method for manufacturing the same, and more particularly, to a foldable wireless charger and a method for manufacturing the same, which form a single cover portion and place first and second chargers on the cover portion to reduce the size of the charger and improve portability.

[0002] Portable devices such as cell phones and laptops contain built-in batteries to store power and control circuits to control the charging and discharging of the batteries. To charge these batteries, power must be supplied from an external power supply.

[0003] Generally, there are two ways to charge a battery: a terminal supply method that electrically connects the charging device and the battery, and a wireless supply method that transmits power wirelessly.

[0004] In particular, the recent proliferation of portable electronic devices such as mobile terminals, smartwatches, and iPads has led to a growing demand for wireless power transmission. Consequently, portable electronic devices such as mobile terminals and smartwatches are incorporating wireless charging systems, enabling them to charge their batteries both wired and wirelessly.

[0005] A wireless power transmission system, or wireless charging system, includes a wireless power transmitter that wirelessly transmits electric energy and a wireless power receiver that receives electric energy supplied from the wireless power transmitter and charges a battery.

[0006] Such wireless charging systems can transmit power by at least one wireless power transfer method (e.g., electromagnetic induction, electromagnetic resonance, RF wireless power transfer, etc.).

[0007] As mentioned above, wireless charging of a portable terminal or wearable device requires a wireless power transmitter that matches the wireless power receiver built into the device. Various wireless power transmitters have been released, including Patent Document 1 (Patent Publication No. 10-2022-0005847 (January 14, 2022)).

[0008] However, since a wireless power transmitter such as Patent Document 1 has a size corresponding to the size of a portable terminal, there is the inconvenience of the user having to always carry a wireless charger of the same size together with the portable terminal.

[0009] Due to these problems, when the size of the wireless charger for battery charging is made small, the size of the charging coil for electromagnetic induction must be made small, which causes a problem of reduced charging efficiency.

[0010] Therefore, there is a need to develop a wireless charger that is lighter and smaller than the user's portable terminal while having high charging efficiency.

[0011] The present invention aims to provide a foldable wireless charger and a method for manufacturing the same, which form a single cover portion by laminating a plurality of sheets and a flexible printed circuit board and arrange first and second chargers on the cover portion to reduce the size of the charger and improve portability.

[0012] The purpose of the present invention is to provide a foldable wireless charger and a manufacturing method thereof, which improves the bending characteristics by surface-treating the area of ​​the cover portion corresponding to the area between the first charger, the second charger, and the hinge portion.

[0013] The present invention aims to provide a foldable wireless charger and a manufacturing method thereof, which improves the assembling ability by arranging magnets in first and second charger cases and first and second top cases constituting first and second chargers so that the charger case and top case can be assembled by magnetic force.

[0014] The present invention aims to provide a foldable wireless charger and a manufacturing method thereof, which prevents the first and second chargers from being damaged by friction when the charger is folded by arranging a phone holder pad portion in a first charger area and arranging a spaced buffer portion in a second charger area facing the first charger.

[0015] The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the description below.

[0016] The present invention provides a method for manufacturing a foldable wireless charger for solving a prior art technical problem, comprising: a step of providing a flexible printed circuit board; a step of arranging a fastening guide sheet having a plurality of split sheets corresponding to first to third cover portions that are divided in advance; a step of attaching the flexible printed circuit board and the fastening guide sheet; and a step of attaching a cover sheet and a bottom sheet to the upper and lower sides of the flexible printed circuit board to which the fastening guide sheet is attached, respectively; a step of attaching first and second charger cases, each having a first charging module and a second charging module mounted thereon, on the cover portion; a step of aligning a first top case and a second top case on the first charger case and the second charger case; and a step of assembling the first charger case and the first top case and the second charger case and the second top case by magnetic force.

[0017] In addition, the method for manufacturing a foldable wireless charger of the present invention comprises: a fastening guide sheet composed of first to fourth split sheets that are separated from each other; and the cover portion forming step includes a step of surface-treating a banding area of ​​the cover sheet and bottom sheet corresponding to the area between the split sheets of the fastening guide sheet.

[0018] In addition, the surface treatment of the foldable wireless charger manufacturing method of the present invention includes a plasma treatment or a surface peeling treatment that removes a portion of the surface of the cover sheet and the bottom sheet, and the first and second flexible terminals arranged on the flexible printed circuit board are assembled to be positioned on the inner bottom surfaces of the first charger case and the second charger case through an open area formed on the cover sheet and a connecting hole formed in the first and second charger cases, and further includes a process of attaching a plurality of magnets to the first and second charger cases and the first and second top cases.

[0019] In addition, the method for manufacturing a foldable wireless charger of the present invention includes a step of mounting a first charging module electrically connected to the first flexible terminal on the inside of the first charger case, and a step of mounting a second charging module electrically connected to the second flexible terminal on the inside of the second charger case.

[0020] In addition, the foldable wireless charger of the present invention comprises a cover portion divided into first to third cover portion areas; first and second chargers and a hinge portion arranged on the cover portion corresponding to the first to third cover portion areas; and first and second charging modules arranged on the first and second chargers, wherein the cover portion includes a flexible printed circuit board connected to the first and second charging modules, a fastening guide sheet attached to the flexible printed circuit board and composed of a plurality of split sheets each corresponding to the first to third cover portion areas, a cover sheet arranged on the flexible printed circuit board, and a bottom sheet arranged on the back of the fastening guide sheet.

[0021] The foldable wireless charger of the present invention and its manufacturing method have the effect of reducing the size of the charger and improving portability by forming a single cover portion by laminating a plurality of sheets and a flexible printed circuit board and arranging first and second chargers on the cover portion.

[0022] The foldable wireless charger of the present invention and its manufacturing method have the effect of improving the banding characteristics by performing surface treatment on the area of ​​the cover portion corresponding to the area between the first charger, the second charger, and the hinge portion.

[0023] The foldable wireless charger of the present invention and its manufacturing method have the effect of improving the assembling ability by arranging magnets in the first and second charger cases and the first and second top cases constituting the first and second chargers so that the charger case and the top case can be assembled by magnetic force.

[0024] The foldable wireless charger of the present invention and its manufacturing method have the effect of preventing the first and second chargers from being damaged by friction when the charger is folded by arranging a phone holder pad portion in a first charger area and arranging a spaced buffer portion in a second charger area facing the first charger.

[0025] The effects according to the present invention are not limited to those exemplified above, and more diverse effects are included in this specification.

[0026] FIG. 1 and FIG. 2 are perspective views of a foldable wireless charger according to an embodiment of the present invention.

[0027] FIG. 3 and FIG. 4 are drawings illustrating a foldable wireless charger according to an embodiment of the present invention arranged vertically to perform charging.

[0028] FIG. 5 is a drawing illustrating a state in which a foldable wireless charger according to an embodiment of the present invention is being charged while being horizontally unfolded.

[0029] FIG. 6 is a drawing showing a foldable wireless charger in a folded state according to an embodiment of the present invention.

[0030] FIG. 7 and FIG. 8 are drawings illustrating the structure of a first charging case area and a second charging case area of ​​a foldable wireless charger according to an embodiment of the present invention.

[0031] FIGS. 9A to 9C are drawings illustrating a manufacturing process of a cover portion of a foldable wireless charger of the present invention.

[0032] FIGS. 10A to 10D are drawings illustrating manufacturing process steps of a foldable wireless charger of the present invention.

[0033] Figure 11 is a flowchart showing a manufacturing process of the foldable wireless charger of the present invention.

[0034] The present invention is capable of various modifications and embodiments. Therefore, specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention, as well as the methods for achieving them, will become clear with reference to the embodiments described in detail below together with the drawings. However, the present invention is not limited to the embodiments disclosed below and can be implemented in various forms. In the following embodiments, the terms "first," "second," etc. are not used in a limiting sense but are used for the purpose of distinguishing one component from another. Furthermore, the singular expression includes the plural expression unless the context clearly indicates otherwise. Furthermore, terms such as "include" or "have" indicate the presence of a feature or component described in the specification, and do not preemptively exclude the possibility that one or more other features or components may be added. Furthermore, in the drawings, the sizes of components may be exaggerated or reduced for convenience of explanation. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, and thus the present invention is not necessarily limited to what is shown.

[0035] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. When describing with reference to the drawings, identical or corresponding components are given the same drawing reference numerals, and redundant descriptions thereof will be omitted.

[0036] FIG. 1 and FIG. 2 are perspective views of a foldable wireless charger according to an embodiment of the present invention. FIG. 3 and FIG. 4 are views illustrating a foldable wireless charger according to an embodiment of the present invention arranged vertically to perform charging.

[0037] Referring to FIGS. 1 to 4, the foldable wireless charger (10) of the present invention includes a cover portion (400), a first charger (100), a second charger (200), and a hinge portion (300). In particular, the foldable wireless charger (10) of the present invention has first and second chargers (100, 200) corresponding to two charging areas arranged on a single cover portion (400) with the hinge portion (300) interposed therebetween.

[0038] The first charger (100) includes a first charging area (102) for wirelessly charging an electronic device, a charger support groove (103) for supporting a second charger (200), and a phone holder pad portion (101). When the foldable wireless charger (10) of the present invention is used, the charger support groove (103) has the function of receiving and supporting one side of the second charger (200) when the second charger (200) is placed vertically.

[0039] In addition, the phone holder pad part (101) can prevent the portable terminal located on the first charger (100) from slipping while charging. In addition, the phone holder pad part (101) functions to maintain a constant distance between the first charger (100) and the second charger (200) together with the spacing buffer part (201) located on the second charger (200) when the foldable wireless charger (10) is in a folded state. This is because when the foldable wireless charger (10) is in a folded state, the first charger (100) and the second charger (200) may come into contact with each other and friction may occur. That is, when the first charger (100) or / and the second charger (200) come into contact with each other, damage to the chargers may occur in the contact area.

[0040] The second charger (200) includes a second charging area (202) for wirelessly charging an electronic device to be placed thereon, a phone holder pad part (101), and a spacing buffer part (201) for maintaining a constant distance between the first charger (100) and the second charger (200). The spacing buffer part (201) may have a protruding structure or a sunken groove shape depending on the structure of the phone holder pad part (101).

[0041] The cover portion (400) may be formed by a structure in which a plurality of sheets and a flexible printed circuit board are laminated with each other. In addition, the cover portion (400) may be divided into a first cover portion (410), a second cover portion (420), and a third cover portion (430) corresponding to the first charger (100), the second charger (200), and the hinge portion (300). The second cover portion (420) may be further divided into a 2-1 cover portion (421) and a 2-2 cover portion (422). Here, the 2-1 cover portion (421) may be an area where the second charger (200) is separated from the cover portion (400) when the foldable wireless charger (10) is used. Conversely, the second-second cover portion (422) may be an area that comes into contact with the second charger (200) when the second charger (200) is placed vertically to use the foldable wireless charger (10).

[0042] That is, when one side of the second charger (200) is fastened to the charger support groove (103) and the second charger (200) is erected at a predetermined angle of inclination, the 2-2 cover part (422) comes into contact with and supports the second charger (200), and the 2-1 cover part (421) supports the second cover part (422).

[0043] As shown in FIGS. 3 and 4, when the second charger (200) is set up to use the foldable wireless charger (10), the 2-2 cover part (422) is in contact with the back surface of the second charger (200) and the 2-1 cover part (421) supports the second charger (200).

[0044] Accordingly, the cover part (400) may have the largest area of ​​the first cover part (410) corresponding to the first charger (100) arranged in a flat shape, and may have smaller areas in the order of the area of ​​the 2-1 cover part (421) supporting the second charger (200), the area of ​​the 2-2 cover part (422), and the area of ​​the 3rd cover part (430).

[0045] In addition, the first cover part (410) and the second cover part (420) of the cover part (400) are used in a folded or unfolded state with the hinge part (300) between them, so they must have better bending characteristics than other areas.

[0046] Likewise, the 2-1 cover part (421) and the 2-2 cover part (422) must have good bending characteristics because they must frequently repeat folding and unfolding operations to support the 2nd charger (200).

[0047] Accordingly, when the cover part (400) is manufactured by stacking a plurality of sheets, the banding characteristics are improved by separating the area between the hinge part (300) and the first and second chargers (100, 200) and the area between the second-first cover part (421) and the second-second cover part (422) for some sheets.

[0048] In this way, the foldable wireless charger of the present invention and its manufacturing method have the effect of reducing the size of the charger and improving portability by forming a single cover portion by laminating a plurality of sheets and a flexible printed circuit board and arranging the first and second chargers on the cover portion.

[0049] The foldable wireless charger of the present invention and its manufacturing method have the effect of improving the banding characteristics by performing surface treatment on the area of ​​the cover portion corresponding to the area between the first charger, the second charger, and the hinge portion.

[0050] The foldable wireless charger of the present invention and its manufacturing method have the effect of improving the assembling ability by arranging magnets in the first and second charger cases and the first and second top cases constituting the first and second chargers so that the charger case and the top case can be assembled by magnetic force.

[0051] The foldable wireless charger of the present invention and its manufacturing method have the effect of preventing the first and second chargers from being damaged by friction when the charger is folded by arranging a phone holder pad portion in a first charger area and arranging a spaced buffer portion in a second charger area facing the first charger.

[0052] FIG. 5 is a drawing illustrating a state in which a foldable wireless charger according to an embodiment of the present invention is being charged while being horizontally unfolded. FIG. 6 is a drawing illustrating a foldable wireless charger according to an embodiment of the present invention in a folded state.

[0053] Referring to FIGS. 5 and 6, the foldable wireless charger (10) of the present invention includes a cover portion (400), a first charger (100), a second charger (200), and a hinge portion (300) disposed on the cover portion (400).

[0054] Unlike FIGS. 3 and 4, the foldable wireless charger (10) of the present invention can charge an electronic device with the cover portion (400) of the foldable wireless charger (10) unfolded.

[0055] As shown in the drawing, when the foldable wireless charger (10) is unfolded, the first charger (100) and the second charger (200) are exposed with the hinge (300) between them.

[0056] A first electronic device, such as a portable terminal, can be placed on the first charger (100) and a second electronic device, such as a wearable electronic device, such as a smart watch, can be placed on the second charger (200) to perform charging.

[0057] In addition, when the foldable wireless charger (10) of the present invention is not in use, the cover part (400) can be folded around the hinge part (300) to reduce the size of the charger and make it portable.

[0058] In this way, the foldable wireless charger (10) of the present invention can charge at least two electronic devices simultaneously, and when the charger is not in use, the first charger (100) and the second charger (200) can be folded so as to overlap each other, thereby minimizing the space occupied by the charger.

[0059] FIG. 7 and FIG. 8 are drawings illustrating the structure of a first charging case area and a second charging case area of ​​a foldable wireless charger according to an embodiment of the present invention.

[0060] Referring to FIGS. 7 and 8, the foldable wireless charger (10) of the present invention includes first and second chargers (100, 200) capable of charging different electronic devices.

[0061] The first charger (100) includes a first charger case (110) that houses a first charging module (190), and a first top case (111: see FIGS. 10a to 10d) that is assembled with the first charger case (110) to block the first charging module (190) from the outside.

[0062] The second charger (200) includes a second charger case (210) that houses a second charging module (290), and a second top case (2111: FIGS. 10a to 10d) that is assembled with the second charger case (210) to block the second charging module (290) from the outside.

[0063] First to fourth magnets (510, 520, 530, 541) may be placed in the first charger case (110) of the first charger (100). The first magnet (510) is composed of a first-first magnet (511) and a first-second magnet (512), and is placed on one side of the first charger case (110). The second magnet (520) is composed of a second-first magnet (521) and a second-second magnet (522), and is placed between the first charging module (190) and the first magnet (510). A connector hole, in which a portion of the bottom surface of the first charger case (110) is open, may be formed between the second-first magnet (521) and the second-second magnet (522).

[0064] The connector hole area, as illustrated in Fig. 7, becomes a passage through which the first charging connector (120) drawn out from the cover portion (400) is inserted into the inside of the first charger case (110). The first charging connector (120) is electrically connected to the first charging module (190) so that the first charger (100) can perform power transmission by electromagnetic induction.

[0065] The third magnet (530) may be placed in the central open area of ​​the first charging module (190). The fourth-first magnet is placed on one side of the first charger case (110) facing the first magnet (510).

[0066] Additionally, a 4-2 magnet (542), a 5-5 magnet (550), and a 6-6 magnet (560) may be placed in the 2nd charger case (210) of the 2nd charger (200). The 5-1 magnet (550) is composed of a 5-1 magnet (551) and a 5-2 magnet (552), and is placed on one side of the 2nd charger case (210). The 4-2 magnet (542) may be placed on one side where the 5-5 magnet (550) is placed, as illustrated in FIG. 8. The 4-2 magnet (542) may be placed between the 5-1 magnet (551) and the 5-2 magnet (552).

[0067] The sixth magnet (560) is composed of a 6-1 magnet (561) and a 6-2 magnet (562), and can be placed on the other side facing the 5th magnet (550) with the second charging module (290) interposed therebetween. A connector hole with a portion of the bottom surface of the second charger case (210) open can be formed between the 6-1 magnet (561) and the 6-2 magnet (562).

[0068] The connector hole area, as illustrated in Fig. 8, becomes a passage through which a second charging connector (220) drawn out from the cover portion (400) is inserted into the inside of the second charger case (210). The second charging connector (220) is electrically connected to the second charging module (290) so that the second charger (200) transmits power by electromagnetic induction.

[0069] In this way, the foldable wireless charger of the present invention and its manufacturing method have the effect of reducing the size of the charger and improving portability by forming a single cover portion by laminating a plurality of sheets and a flexible printed circuit board and arranging the first and second chargers on the cover portion.

[0070] The foldable wireless charger of the present invention and its manufacturing method have the effect of improving the banding characteristics by performing surface treatment on the area of ​​the cover portion corresponding to the area between the first charger, the second charger, and the hinge portion.

[0071] The foldable wireless charger of the present invention and its manufacturing method have the effect of improving the assembling ability by arranging magnets in the first and second charger cases and the first and second top cases constituting the first and second chargers so that the charger case and the top case can be assembled by magnetic force.

[0072] The foldable wireless charger of the present invention and its manufacturing method have the effect of preventing the first and second chargers from being damaged by friction when the charger is folded by arranging a phone holder pad portion in a first charger area and arranging a spaced buffer portion in a second charger area facing the first charger.

[0073] FIGS. 9A to 9C are drawings illustrating a manufacturing process for a cover portion of a foldable wireless charger of the present invention. FIGS. 10A to 10D are drawings illustrating manufacturing process steps for a foldable wireless charger of the present invention.

[0074] Referring to FIGS. 9A to 10D along with FIGS. 1 and 2, the foldable wireless charger (10) of the present invention includes a cover portion (400), a first charger (100), a second charger (200), and a hinge portion (300).

[0075] As described above, the first charger (100) and the second charger (200) are mounted on the cover part (400), and the cover part (400) is in an unfolded or folded state when charging is in progress or not.

[0076] The cover portion (400) is formed in a flat shape by laminating a flexible printed circuit board having a plurality of sheets and a plurality of signal patterns formed thereon. At this time, the cover portion (400) forms a bending area in a predetermined area so that it can be easily folded or unfolded around the hinge portion (300).

[0077] Referring to FIGS. 9a and 9b, the method for manufacturing a foldable wireless charger (10) of the present invention includes a process for forming a cover portion (400).

[0078] The cover portion (400) includes a process of forming an attachment tape (402) on a flexible printed circuit board (401). The attachment tape (402) may be attached to the back surface of the flexible printed circuit board (401). As illustrated in the drawing, the flexible printed circuit board (401) may have a square plate structure across which a signal pattern portion (401c) traverses. Accordingly, the flexible printed circuit board (401) may be formed with a structure that fixes and supports a portion of the signal pattern portion (401c), and an occupied area of ​​the flexible printed circuit board (401) may correspond to a portion of the signal pattern portion (401c). First and second flexible terminals (401a, 401b) may be formed on both edges of the signal pattern portion (401c).

[0079] In this way, the flexible printed circuit board (401) placed on the cover portion of the foldable wireless charger of the present invention is formed with a minimum area capable of fixing and supporting the signal pattern portion (401c), thereby enabling the cover portion to be made thin and compact. By minimizing the area occupied by the flexible printed circuit board (401), poor adhesion with the attachment tape (402) attached thereafter can be minimized.

[0080] The attachment tape (402) can be attached to one side of the flexible printed circuit board (401). The attachment tape (402) can be formed in a structure corresponding to the flexible printed circuit board (401). In addition, the attachment tape (402) includes first and second support pattern portions (402a, 402b) corresponding to the first flexible terminal (401a), signal pattern portion (401c), and second flexible terminal (401b) of the flexible printed circuit board (401).

[0081] Accordingly, the attachment tape (402) can be attached to an area corresponding to the flexible printed circuit board (401) and the signal pattern portion (401c). It is preferable that the attachment tape (402) be attached only to the area of ​​the flexible printed circuit board (401) and the signal pattern portion (401c) excluding the first and second flexible terminals (401a, 401b).

[0082] Then, as illustrated in FIG. 9b, the flexible printed circuit board (401) and the fastening guide sheet (403) are attached to each other. The fastening guide sheet (403) may be formed into a structure divided into multiple sheets. As illustrated in the drawing, the fastening guide sheet (403) may include a first split sheet (403a), a second split sheet (403b), a third split sheet (403c), and a fourth split sheet (403d).

[0083] Each of the first to fourth split sheets (403a, 403b, 403c, 404d) may correspond to the first charger (100), the hinge portion (300), and the second charger (200) of the foldable wireless charger (10). As described above, in the area corresponding to the second charger (200), the split sheets (403a, 403b, 403c, 403d) may be arranged in the cover portion area that comes into contact with a part of the second charger (200) and the cover portion area for supporting the second charger (200) when it is vertically erected.

[0084] In addition, although not shown in the drawing, each of the first to fourth split sheets (403a, 403b, 403c, 403d) constituting the fastening guide sheet (403) may be formed in a structure in which multiple sheets are laminated.

[0085] In addition, the fastening guide sheet (403) may be provided with first and second fastening guide portions (433a, 433b) for guiding the first and second charger cases (110, 210) to be assembled thereafter. The first and second fastening guide portions (433a, 433b) may be formed on the first split sheet (403a) and the third split sheet (403c), respectively. The first and second fastening guide portions (433a, 433b) may be formed of a plurality of partitions that are vertically aligned with respect to the surface of the first split sheet (403a) or the third split sheet (403c). The first and second fastening guide portions (433a, 433b) may provide a predetermined elastic force to the periphery of the first and second charger cases (110, 210) to be assembled, thereby fixing the first and second charger cases (110, 210).

[0086] In addition, as shown in the drawing, the first split sheet (403a) of the fastening guide sheet (403) is formed with a pattern receiving area (434) in which the sheet is removed in the longitudinal direction of the signal pattern portion (401c) so as to be able to receive the signal pattern portion (401c) of the flexible printed circuit board (401).

[0087] Accordingly, when the flexible printed circuit board (401) and the fastening guide sheet (403) are attached to each other, the signal pattern portion (4010c) of the flexible printed circuit board (401) and the bottom surface of the first split sheet (403a) can form the same plane, thereby improving the assembling ability.

[0088] In this way, the method for manufacturing a foldable wireless charger (10) of the present invention increases the degree of freedom of bending of the cover portion (400) between the first to fourth split sheets (403a, 403b, 403c, 403d) by arranging a fastening guide sheet (403) composed of sheets divided to correspond to the first charger (100), the hinge portion (300), and the second charger (200).

[0089] As illustrated in the drawing, the flexible printed circuit board (401) is attached by aligning the first to fourth split sheets (403a, 403b, 403c, 403d) of the fastening guide sheet (403) side by side, and then attaching each of the split sheets (403a, 403b, 403c, 403d). At this time, the first flexible terminal (401a) and the second flexible terminal (401b) of the flexible printed circuit board (401) are not attached to the split sheet (403) and are exposed to the pattern receiving area (434) of the first split sheet (403a) and the open area of ​​the fourth split sheet (403d).

[0090] Then, a cover sheet (405) is attached to the upper side of the fastening guide sheet (403) to which the flexible printed circuit board (401) is fastened, and a bottom sheet (404) is attached to the back surface of the fastening guide sheet (403). As illustrated in the drawing, the cover sheet (405) may have first to third open areas (405a, 405b, 405c) formed by removing a portion of the sheet. The first open area (405a) may correspond to an area of ​​the first charger case (110) to be assembled later. Accordingly, by minimizing the cover sheet (405) and narrowing its width, attachment failure that may occur when the cover sheet (405) is attached to the fastening guide sheet (403) can be minimized. In addition, the fastening guide sheet (403) and the bottom sheet (404) may be attached by heat bonding.

[0091] In addition, the first and second flexible terminals (401a, 401b) arranged on the flexible printed circuit board (401) are exposed to the outside through the first and third open areas (405a, 405c) of the cover sheet (405). The exposed first and second flexible terminals (401a, 401b) are electrically connected to the first and second chargers (100, 200) that are assembled thereafter.

[0092] To be more specific, the first and second flexible terminals (401a, 401b) may be the first and second charging connectors (120, 220) illustrated in FIGS. 7 and 8. Alternatively, connectors may be connected to the first and second flexible terminals (401a, 401b) to form the first and second charging connectors (120, 220).

[0093] Accordingly, the first and second flexible terminals (401a, 401b) are electrically connected to the first and second charging modules (190, 290) disposed inside the first and second charger cases (110, 210) while being exposed to the outside of the cover sheet (405) through the first and second open areas (405a, 405c).

[0094] In addition, although not shown in the drawing, surface treatment may be performed on the cover sheet (405) and the bottom sheet (404) to improve the banding characteristics of the cover portion (400). For example, plasma treatment or surface peeling treatment may be performed on the area of ​​the cover sheet (405) and the bottom sheet (404) corresponding to the banding area between the split sheets (403a, 403b, 403c, 403d) of the fastening guide sheet (403).

[0095] That is, when plasma treatment or surface peeling treatment is performed on the cover sheet (405) and bottom sheet (404) corresponding to the banding area, the surface thickness is reduced and the molecular bonding on the surface is weakened compared to other areas. In this way, the surface treatment area of ​​the cover sheet (405) and bottom sheet (404) can be easily banded compared to other areas, thereby improving the banding characteristics of the cover portion (400).

[0096] In this way, the foldable wireless charger of the present invention and its manufacturing method have the effect of reducing the size of the charger and improving portability by forming a single cover portion by laminating a plurality of sheets and a flexible printed circuit board and arranging the first and second chargers on the cover portion.

[0097] The foldable wireless charger of the present invention and its manufacturing method have the effect of improving the banding characteristics by performing surface treatment on the area of ​​the cover portion corresponding to the area between the first charger, the second charger, and the hinge portion.

[0098] The foldable wireless charger of the present invention and its manufacturing method have the effect of improving the assembling ability by arranging magnets in the first and second charger cases and the first and second top cases constituting the first and second chargers so that the charger case and the top case can be assembled by magnetic force.

[0099] The foldable wireless charger of the present invention and its manufacturing method have the effect of preventing the first and second chargers from being damaged by friction when the charger is folded by arranging a phone holder pad portion in a first charger area and arranging a spaced buffer portion in a second charger area facing the first charger.

[0100] Referring to FIGS. 10a to 10b, the method for manufacturing a foldable wireless charger (10) of the present invention is such that when the cover part (400) is completed based on the aforementioned FIGS. 9a to 9c, the first and second charger cases (110, 210) illustrated in FIGS. 7 and 8 are mounted on the cover part (400).

[0101] As illustrated in Fig. 10a, when the cover part (400) is provided, the first and second charger cases (110, 210) and the hinge part (300) are positioned on the upper side of the cover part (400). In order to increase process precision, the cover part (400) may be fixed on the stage, and then the first charger case (110), the second charger case (210), and the hinge part (300) may be aligned.

[0102] In particular, the foldable wireless charger (10) of the present invention has a first fastening guide portion (433a) and a second fastening guide portion (433b) arranged on a first split sheet (403a) and a third split sheet (403c) constituting a fastening guide sheet (403). Accordingly, the first and second charger cases (110, 210) are guided and assembled by the first and second fastening guide portions (433a, 433b) during the assembly process. As described above, the first and second fastening guide portions (433a, 433b) can fix the first and second charger cases (110, 210) in a manner that provides a predetermined elastic force to the periphery of the first charger case (110) and the second charger case (210).

[0103] At this time, the first and second flexible terminals (401a, 401b) or the first and second charging connectors (120, 220) exposed to the outside of the cover portion (400) are exposed on the bottom surface of the first and second charger cases (110, 210) through connector holes formed in the first and second charger cases (110, 210).

[0104] Then, as shown in FIGS. 10b and 10c, the first and second top cases (111, 211) are positioned on the upper side of the first and second charger cases (110, 210).

[0105] At this time, a plurality of magnets may be placed on the first and second top cases (111, 211) or the first and second charger cases (110, 210) to ensure precise and stable assembly between the first and second top cases (111, 211) and the first and second charger cases (110, 210).

[0106] As shown in FIGS. 7 and 8, when magnets are placed on the first and second charger cases (110, 210), the first and second top cases (111, 211) are aligned on the first and second charger cases (110, 210) and then assembled.

[0107] On the other hand, when magnets are placed on the first and second top cases (111, 211), magnetic bonding is performed on the first and second top cases (111, 211), and then the first and second top cases (111, 211) and the first and second charger cases (110, 210) are aligned with each other and then assembled.

[0108] At this time, a charger storage means is assembled into the first top case (111) so that a charger storage groove (103) as shown in Fig. 1 can be formed.

[0109] In this way, when the first and second top cases (111, 211) are assembled into the first and second charger cases (110, 210), the first charger (100) and the second charger (200) are formed on the cover portion (400).

[0110] Figure 11 is a flowchart showing a manufacturing process of the foldable wireless charger of the present invention.

[0111] Referring to FIG. 11, the method for manufacturing a foldable wireless charger of the present invention includes a step of providing a flexible printed circuit board (S1101), a step of forming a cover portion by laminating a plurality of sheets on the flexible printed circuit board (S1102), a step of mounting a first charger case, a second charger case, and a hinge portion on the cover portion (S1103), a step of aligning the first and second top cases with the first and second charger cases (S1104), and a step of assembling the first and second top cases and the first and second charger cases to complete the foldable wireless charger (S1105).

[0112] Here, the step (S1101) of providing a flexible printed circuit board of the method for manufacturing a foldable wireless charger of the present invention and the step (S1102) of forming a cover part by laminating a plurality of sheets on the flexible printed circuit board include the steps of arranging a fastening guide sheet having a plurality of divided sheets corresponding to the first to third cover parts that are divided in advance, the step of attaching the fastening guide sheet to the flexible printed circuit board, and the step of attaching a cover sheet and a bottom sheet to the upper and lower sides of the flexible printed circuit board to which the fastening guide sheet is attached, respectively.

[0113] In addition, the step (S1103) of mounting a first charger case and a second charger case and a hinge part on the cover part of the foldable wireless charger manufacturing method of the present invention, the step (S1104) of aligning the first and second top cases with the first and second charger cases, and the step (S1105) of assembling the first and second top cases and the first and second charger cases to complete the foldable wireless charger include the steps of: attaching the first and second charger cases, each having a first charging module and a second charging module mounted on the cover part; aligning the first top case and the second top case on the first charger case and the second charger case; and assembling the first charger case, the first top case, the second charger case, and the second top case by magnetic force.

[0114] In addition, the cover part forming step (S1101, S1102) of the foldable wireless charger manufacturing method of the present invention includes a step of performing surface treatment on the cover sheet and the bottom sheet corresponding to the banding area between the split sheets. The surface treatment includes a plasma treatment or a surface peeling treatment that removes a portion of the surface of the cover sheet and the bottom sheet, and includes a step of assembling the first and second flexible terminals arranged on the flexible printed circuit board to be positioned on the inner bottom surfaces of the first charger case and the second charger case through terminal holes formed on the cover sheet and connect holes formed in the first and second charger cases.

[0115] In addition, the method further includes a process of attaching a plurality of magnets to the first and second charger cases and the first and second top cases, a step of mounting a first charging module electrically connected to the first flexible terminal on the inside of the first charger case, and a step of mounting a second charging module electrically connected to the second flexible terminal on the inside of the second charger case.

[0116] In this way, the foldable wireless charger of the present invention and its manufacturing method have the effect of reducing the size of the charger and improving portability by forming a single cover portion by laminating a plurality of sheets and a flexible printed circuit board and arranging the first and second chargers on the cover portion.

[0117] The foldable wireless charger of the present invention and its manufacturing method have the effect of improving the banding characteristics by performing surface treatment on the area of ​​the cover portion corresponding to the area between the first charger, the second charger, and the hinge portion.

[0118] The foldable wireless charger of the present invention and its manufacturing method have the effect of improving the assembling ability by arranging magnets in the first and second charger cases and the first and second top cases constituting the first and second chargers so that the charger case and the top case can be assembled by magnetic force.

[0119] The foldable wireless charger of the present invention and its manufacturing method have the effect of preventing the first and second chargers from being damaged by friction when the charger is folded by arranging a phone holder pad portion in a first charger area and arranging a spaced buffer portion in a second charger area facing the first charger.

[0120] The embodiments of the present invention described above may be implemented in the form of program commands that can be executed through various computer components and recorded on a computer-readable recording medium. The computer-readable recording medium may include program commands, data files, data structures, etc., either singly or in combination. The program commands recorded on the computer-readable recording medium may be specially designed and configured for the present invention or may be known and available to those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical recording media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, and hardware devices specifically configured to store and execute program commands, such as ROMs, RAMs, and flash memories. Examples of program commands include not only machine language codes generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter, etc. Hardware devices may be changed into one or more software modules to perform processing according to the present invention, and vice versa.

[0121] The specific implementations described in the present invention are exemplary embodiments and do not limit the scope of the present invention in any way. For the sake of brevity, descriptions of conventional electronic components, control systems, software, and other functional aspects of the systems may be omitted. In addition, the lines connecting or connecting members between components depicted in the drawings are merely representative of functional connections and / or physical or circuit connections, and may be replaced or represented as various additional functional connections, physical connections, or circuit connections in an actual device. In addition, unless specifically mentioned as "essential," "important," etc., a component may not be absolutely necessary for the application of the present invention.

[0122] Although the detailed description of the present invention has been described with reference to preferred embodiments of the present invention, it will be understood by those skilled in the art or having ordinary knowledge in the art that various modifications and changes can be made to the present invention without departing from the spirit and technical scope of the present invention as set forth in the claims below. Accordingly, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

[0123] The present invention relates to a foldable wireless charger and a method for manufacturing the same, and has industrial applicability.

Claims

1. A cover portion forming step including the steps of providing a flexible printed circuit board, arranging a fastening guide sheet having a plurality of split sheets corresponding to first to third cover portions that are divided in advance, attaching the flexible printed circuit board and the fastening guide sheet, and attaching a cover sheet and a bottom sheet to the upper and lower sides of the flexible printed circuit board to which the fastening guide sheet is attached, respectively; A step of attaching first and second charger cases, each having a first charging module and a second charging module mounted on the cover portion; A step of aligning the first top case and the second top case on the first charger case and the second charger case; and A step of assembling the first charger case and the first top case and the second charger case and the second top case by magnetic force, Method for manufacturing a foldable wireless charger.

2. In paragraph 1, The above-mentioned fastening guide sheet is composed of first to fourth split sheets separated from each other. Method for manufacturing a foldable wireless charger.

3. In paragraph 2, The above cover part forming step is: Including a step of surface treatment in the banding area of ​​the cover sheet and bottom sheet corresponding to the split sheets of the above-mentioned fastening guide sheet. Method for manufacturing a foldable wireless charger.

4. In paragraph 3, The above surface treatment includes plasma treatment or surface peeling treatment that removes part of the surface of the cover sheet and bottom sheet. Method for manufacturing a foldable wireless charger.

5. In paragraph 4, The first and second flexible terminals arranged on the flexible printed circuit board are assembled so as to be positioned on the inner bottom surfaces of the first charger case and the second charger case through the open area formed on the cover sheet and the connecting hole formed in the first and second charger cases. Method for manufacturing a foldable wireless charger.

6. In paragraph 5, Further comprising a process of attaching a plurality of magnets to the first and second charger cases and the first and second top cases. Method for manufacturing a foldable wireless charger.

7. In paragraph 6, A step of mounting a first charging module electrically connected to the first flexible terminal inside the first charger case, and a step of mounting a second charging module electrically connected to the second flexible terminal inside the second charger case, Method for manufacturing a foldable wireless charger.

8. Cover part divided into first to third cover part areas; First and second chargers and hinge parts arranged on the cover part corresponding to the first to third cover part areas; and Including first and second charging modules arranged in the first and second chargers, The above cover part, A flexible printed circuit board connected to the first and second charging modules, A fastening guide sheet attached to the flexible printed circuit board and composed of a plurality of split sheets each corresponding to the first to third cover portion areas, A cover sheet arranged on the flexible printed circuit board, Including a bottom sheet placed on the back surface of the above fastening guide sheet. Foldable wireless charger.

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