Power supply device

Abstract

A power supply device coupled to a plug to supply power, according to one embodiment of the present invention, comprises: a power housing in which a mounting space is formed; a relay terminal assembled in the mounting space so as to electrically connect external power to the plug; a fastening recognition unit movably provided in the mounting space so as to guide fastening of the plug and the relay terminal; and a circuit unit having a connection circuit that connects the relay terminal to the external power, and a recognition switch that recognizes whether the plug is fastened, wherein the fastening recognition unit has a sliding cover, which moves in a movement direction and opens a communication hole formed on one side of the relay terminal, and a push rod, which moves in a fastening direction and operates the recognition switch, and, as the push rod operates the recognition switch, external power is supplied to the connection circuit, thereby remarkably improving reliability and convenience of a product.

Description

Power supply

[0001] The present invention relates to a power supply device, and more specifically, to a power supply device connected to a vehicle charging unit to supply power to the outside.

[0002] As the importance of environmental issues has emerged and global interest in reducing carbon dioxide emissions has grown, interest and demand for electric vehicles—which are powered by electrical energy from energy storage devices such as batteries, instead of automobiles that use internal combustion engines for driving—have increased significantly.

[0003] Electric vehicles use rechargeable batteries and are equipped with a charging inlet capable of charging the battery with external power for driving; furthermore, battery capacity has increased with the recent development of electric vehicles.

[0004] Accordingly, V2L (Vehicle to Load) technology was developed to supply energy stored in electric vehicle batteries to external devices, and vehicle power supply units were also developed to electrically connect the battery and external devices.

[0005] To this end, the vehicle power supply unit is coupled to the electric vehicle's battery to electrically relay power between the battery and the external device, and an external plug connected to the external device is connected to supply power to the external device.

[0006] In this case, if an electrical connection is made while the vehicle power supply and the external plug are not fully connected, sparks may occur in the part where high-voltage power flows.

[0007] Accordingly, secondary accidents such as fires caused by sparks may occur, and there was a problem in that user safety was significantly reduced because the electrical connection part was exposed to the outside and the user had to directly grip it.

[0008] One embodiment of the present invention is devised to solve the above-mentioned problems and aims to provide a power supply unit having improved product reliability and convenience by securing more stable electrical connection stability.

[0009] A power supply device that supplies power by being coupled with a plug according to one embodiment of the present invention comprises: a power housing having an installation space formed on the inside; a relay terminal assembled in the installation space to electrically connect an external power source and a plug; a connection recognition unit installed movably in the installation space to guide the connection between the plug and the relay terminal; and a circuit unit formed with a connection circuit that connects the relay terminal and an external power source and a recognition switch that recognizes whether the plug is connected. The connection recognition unit is formed with a sliding cover that moves in a direction of movement and opens a communication hole formed on one side of the relay terminal, and a push rod that moves in a direction of connection and operates the recognition switch. As the push rod operates the recognition switch, the external power source is supplied to the connection circuit.

[0010] The above power housing is formed with a main body having an installation space, a main cover having a fastening hole into which a plug is inserted and closing the installation space, and a partition body having a communication hole formed between the main body and the main cover that partitions the installation space and corresponds to the position of the fastening hole. The sliding cover is formed with a cover body that closes the communication hole on one side of the partition body and a conversion part that is positioned opposite the fastening hole and moves the cover body corresponding to the position of the plug, so that the plug can sequentially pass through the fastening hole and the communication hole to be electrically connected to the relay terminal.

[0011] The above push rod is formed with a rod body extending in the fastening direction and an interference end protruding outward from the rod body, and the above sliding cover is further formed with a prevention part extending from one side of the cover body and positioned on one side of the interference end, thereby blocking the movement of the push rod before plug fastening, but allowing it to detach from the interference end by movement.

[0012] The above-mentioned connection recognition part may further have an elastic part formed to return the sliding cover and the push rod as the plug is disengaged, thereby closing the communication hole again as the plug is disengaged, and at the same time, the prevention part may be repositioned to one side of the interference end.

[0013] The above push rod is formed as a support end protruding outward from the rod body, and the elastic part may be formed as a first return spring that extends in the fastening direction between the partition body and the support end, and a second return spring that extends in the movement direction between the partition body and the cover body.

[0014] The above section body may further include a fixed lip that supports one side of the conversion part and a guide lip formed on the other side of the cover body in a moving direction to guide the movement of the sliding cover.

[0015] The above push rod can operate the recognition switch only when the relay terminal and the plug are in a fully connected position.

[0016] The main body may further have a mounting lip formed to form a space for the relay terminal to be seated corresponding to the position of the communication hole, and the relay terminal may be formed with an elastic body that is received inside the mounting lip and directly contacts both sides of the plug, and a connecting part that extends from the elastic body and is connected to the connecting circuit.

[0017] The above main body may further have a deformation-preventing lip formed between the elastic body and the inner side of the seating lip to prevent deformation of the elastic body.

[0018] As examined above, various effects including the following can be expected according to the means for solving the problem of the present invention. However, the present invention is not required to exhibit all of the following effects to be valid.

[0019] The power supply unit of the present invention is equipped with a sliding cover that opens a communication hole connected to a relay terminal in conjunction only with plug connection, thereby preventing foreign matter from entering the part where an electrical connection occurs when the plug is not connected.

[0020] In addition, it is equipped with a push rod that operates the recognition switch only when the plug reaches the full connection position where it is fully connected to the relay terminal, while simultaneously being linked to the plug connection, thereby fundamentally blocking the occurrence of an electrical connection before full connection.

[0021] In addition, when the plug is engaged by the elastic part and then disengaged, the sliding cover and push rod return to their original positions, thereby improving user convenience while ensuring electrical connection stability by sealing off the electrical connection point from the outside.

[0022] In addition, a color changing circuit is further formed to change the color of an LED formed on the outside of the power supply unit by the operation of a recognition switch, allowing the user to easily recognize whether the plug is fully connected.

[0023] FIG. 1 is a perspective view of a power supply device according to one embodiment of the present invention.

[0024] FIG. 2 is an exploded view of FIG. 1 with the circuit part excluded.

[0025] FIG. 3(a) is a perspective view from another direction with the main cover and circuit part of FIG. 1 removed, FIG. 3(b) is a perspective view from another direction of FIG. 3(a).

[0026] FIG. 4 is a perspective view of FIG. 3(a) with the sliding cover and the partition body removed.

[0027] FIG. 5(a) is a cross-sectional view in the direction of Va-Va of FIG. 1, and FIG. 5(b) is a cross-sectional view in the direction of Vb-Vb of FIG. 1.

[0028] FIG. 6(a) is a cross-sectional view in the direction of VIa-VIa of FIG. 1, and FIG. 6(b) is a cross-sectional view in the direction of VIb-VIb of FIG. 1.

[0029] FIGS. 7(a) to 7(c) are drawings illustrating the sequence in which a plug is connected to FIG. 6(a).

[0030] FIGS. 8(a) to 8(c) are drawings illustrating the sequence in which plugs are connected to FIG. 6(b).

[0031] Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, in order not to obscure the essence of the present invention, descriptions of known functions or configurations will be omitted.

[0032] For the convenience of explanation, the direction in which the plug is connected is defined as the connection direction, the direction in which the sliding cover moves is defined as the movement direction, and the direction that intersects perpendicularly with the connection direction and the movement direction is defined as the intersection direction.

[0033] At this time, the direction in which the main body is formed relative to the power housing is referred to as the downward direction of the connection, and the direction in which the main cover is formed is referred to as the upward direction of the connection.

[0034] In addition, the direction parallel to the circumferential direction of the circle centered on the fastening direction is defined as the circumferential direction, and the direction in which the radius of the circle centered on the fastening direction is formed is defined as the radial direction.

[0035] Therefore, the movement direction and the intersection direction are used interchangeably with the direction arranged in a specific direction among the radial directions; however, to explain the invention more clearly, the movement direction, the intersection direction, and the radial direction are distinguished.

[0036] However, the aforementioned direction is for convenience of explanation and may differ when the invention is actually installed, and configurations that produce the same function and effect may fall within the scope of the rights of the present invention.

[0037] Here, the plug is a part connected to an external device to receive external power, and is generally formed with a plug body and a pair of plug terminals that protrude outward from the plug body to establish an electrical connection, for the purpose of electrical connection and user convenience.

[0038] Furthermore, one objective of the power supply device of the present invention is to ensure electrical connection stability and user safety through plug connection recognition. Considering that the shape of the plug can be formed in a wide variety of ways depending on the external device, the shape of the plug specifically described below corresponds to an example.

[0039] Therefore, a change in the plug shape cannot affect the scope of the present invention, and even if the plug shape is different, it falls within the scope of the present invention if the purpose, configuration, and effect for recognizing complete plug engagement are the same.

[0040]

[0041] FIG. 1 is a perspective view of a power supply device according to one embodiment of the present invention, FIG. 2 is an exploded perspective view of FIG. 1 with the circuit part removed, FIG. 3(a) is a perspective view of FIG. 1 with the main cover and circuit part removed, FIG. 3(b) is a perspective view of FIG. 3(a) with the sliding cover and partition body removed, FIG. 4 is a perspective view of FIG. 3(a) with the sliding cover and partition body removed.

[0042] FIG. 5(a) is a cross-sectional view in the direction of Va-Va of FIG. 1, FIG. 5(b) is a cross-sectional view in the direction of Vb-Vb of FIG. 1, FIG. 6(a) is a cross-sectional view in the direction of VIa-VIa of FIG. 1, FIG. 6(b) is a cross-sectional view in the direction of VIb-VIb of FIG. 1, FIG. 7(a) to FIG. 7(c) are drawings illustrating the sequence in which a plug is connected to FIG. 6(a), FIG. 8(a) to FIG. 8(c) are drawings illustrating the sequence in which a plug is connected to FIG. 6(b).

[0043] Referring to FIGS. 1 to 8, a power supply device (10) that supplies power by being coupled with a plug (20) of an embodiment of the present invention comprises a power housing (100) having an installation space (111) formed on the inside, a relay terminal (200) assembled in the installation space (111) to electrically connect an external power source and the plug (20), a connection recognition part (300) installed so as to be movable in the installation space (111) to guide the connection between the plug (20) and the relay terminal (200), a connection circuit (410) that connects the relay terminal (200) to the external power source, and a circuit part (400) having a recognition switch (420) formed therein that recognizes whether the plug (20) is connected. The connection recognition part (300) includes a sliding cover (310) that moves in a moving direction and opens a communication hole (131) formed on one side of the relay terminal (200). It is characterized by being formed with a push rod (320) that moves in the direction of connection and operates the recognition switch (420), and as the push rod (320) operates the recognition switch (420), external power is supplied to the connection circuit (410).

[0044] The power supply unit (10) is connected to a charging unit connected to the vehicle's battery and uses electrical energy (external power) stored in the battery to power an external device that requires power through a plug (20), and is used to operate the external device outdoors or in emergency situations.

[0045] To this end, the power supply unit (10) includes a power housing (100) having an installation space (111) formed therein for electrical connection to occur internally, a relay terminal (200) assembled in the installation space (111) while connected to an external power source, and a connection recognition unit (300) that guides the connection between the relay terminal (200) and the plug (20).

[0046] At this time, the circuit unit (400) that performs power supply and other convenience functions according to the relative position with the connection recognition unit (300), that is, whether the plug (20) is connected, is further included to improve electrical connection stability and user convenience.

[0047] Here, the power housing (100) is formed with a main body (110) having an installation space (111) that is open to one side, a main cover (120) installed in the open installation space (111), and a partition body (130) formed between the main body (110) and the main cover (120) to partition the installation space (111).

[0048] At this time, the partition body (130) can be installed by being received inside the installation space (111), but can also be positioned between the main body (110) and the main cover (120) to form the exterior of the power housing (100).

[0049] Therefore, the installation space (111) refers to a space formed inwardly by the power housing (100), and does not necessarily refer to a space formed only inwardly by the main body (110).

[0050] Specifically, the main body (110) provides an installation space (111) in which a relay terminal (200) and a partition body (130) are installed, and on the inside of the installation space (111), a mounting lip (112) is formed to provide a space for assembling the relay terminal (200), and a deformation prevention lip (113) is formed on the inside of the mounting lip (112) to prevent deformation of the relay terminal (200).

[0051] To this end, the mounting lip (112) is formed to surround the outer side of the elastic body (210) in correspondence with the position of the communication hole (131), and is open in at least one direction so that the extension body (220) can be extended.

[0052] Additionally, the deformation prevention lip (113) is formed to protrude from the inner side of the space formed by the seating lip (112) and is positioned between a pair of elastic contact lips (211). Accordingly, the gap between the pair of elastic contact lips (211) is maintained above a certain level, thereby preventing interference when the plug (20) is fastened.

[0053] Furthermore, the main body (110) is formed with a first guide body (114) through which the push rod (320) passes and a first coupling lip (115) that is coupled to the partition body (130), thereby providing a structure that guides the movement of the push rod (320) in the coupling direction when the plug (20) is coupled and a structure that is coupled to the partition body (130).

[0054] Here, the first guide body (114) extends in the fastening direction to guide the movement of the push rod (320) in the fastening direction, and a hole is formed on the inside through which the rod body (321) passes.

[0055] Additionally, the first connecting rib (115) extends in the direction of connection where the partition body (130) is connected, and has the shape of a cantilever with a projection formed at the end portion that is fixed to the connecting hole (134), so that it is elastically deformed and returns to its original position while being caught and fixed to the connecting hole (134).

[0056] At this time, the first connecting rib (115) and the connecting hole (134) are connected on the inside of the installation space (111), but the protrusion is exposed through the connecting hole (134) on the outside of the power housing (100), so that the main body (110) and the partition body (130) can be easily separated using a tool as needed.

[0057] The main cover (120) is formed in an open part of the installation space (111) to close the installation space (111), and a fastening hole (121) into which a plug (20) is inserted is formed so that the plug (20) is inserted into the installation space (111) from the outside of the power housing (100).

[0058] At this time, the fastening holes (121) are formed in pairs corresponding to the positions of the pair of plug terminals (22) so that the plug terminals (22) formed in pairs for electrical connection can be inserted.

[0059] Additionally, the main cover (120) has a second guide body (122) through which the push rod (320) passes, and a second connecting lip (123) that is coupled to the partition body (130), thereby providing a structure that guides the movement of the push rod (320) in the direction of connection when the plug (20) is connected and a structure that is coupled to the partition body (130).

[0060] Here, the second guide body (122) extends in the fastening direction to guide the movement of the push rod (320) in the fastening direction, and a hole is formed on the inside through which the rod body (321) passes.

[0061] And the second connecting rib (123) extends in the direction of connection where the partition body (130) is connected, and has the shape of a cantilever with a projection formed at the end portion that is fixed to the connecting end (135), so that it is elastically deformed and returns to its original position while being caught and fixed to the inside of the connecting end (135).

[0062] Furthermore, it is preferable that the main cover (120) further has a cover body support lip (124) formed therein to accommodate both sides of the sliding cover (310) while combined with the partition body (130). Accordingly, the cover body support lip (124) restricts the cover body (311) from moving in a cross direction while allowing the sliding cover (310) to move while maintaining a preset position.

[0063] The partition body (130) is positioned between the main body (110) and the main cover (120) to partition the installation space (111) in the fastening direction, and a connecting hole (131) is formed in the partition body (130) corresponding to the position of the fastening hole (121), and a third guide body (132) is formed so that the push rod (320) can move in the fastening direction.

[0064] At this time, the communication hole (131) is also formed as a pair through which a pair of plug terminals (22) pass, and is formed corresponding to the position of the connecting hole (121) and the relay terminal (200) so as to be electrically connected to the relay terminal (200).

[0065] Here, the third guide body (132) has a guide hole (1321) through which the rod body (321) passes inward, and a protruding end (1322) extending inward in a radial direction from the end of the guide hole (1321) to form a first return spring (331) installed inwardly within the third guide body (132) to assist in the return of the push rod (320).

[0066] Specifically, the third guide body (132) is extended by a predetermined length in the fastening direction, and the open area of ​​the guide hole (1321) is formed to be larger than the cross-sectional area of ​​the partition body (130), so that the first return spring (331) is installed on the outside of the load body (321).

[0067] However, a protruding end (1322) is formed at the lower end of the fastening direction of the guide hole (1321) to reduce the open area so that one end of the first return spring (331) is supported, while the rod body (321) is penetrated.

[0068] At this time, a support end (323) extending radially outward from the outer surface of the push rod (320) is disposed at the upper end of the fastening direction of the guide hole (1321) so that the first return spring (331) is installed inside the third guide body (132).

[0069] Additionally, the section body (130) is formed with a coupling hole (134) and a coupling end (135) so that it can be combined with the main body (110) and the main cover (120) to be assembled into a single power housing (100). At this time, the coupling hole (134) and the coupling end (135) are formed at different locations to minimize interference when assembling the power housing (100).

[0070] Specifically, the coupling hole (134) is formed corresponding to the position of the first coupling rib (115) and is coupled inside the installation space (111), and the coupling end (135) is formed corresponding to the position of the second coupling rib (123) and is coupled inside the installation space (111).

[0071] At this time, the coupling hole (134) is formed by penetrating the outer surface of the partition body (130) so that the first coupling lip (115) is exposed from the outside, and the coupling end (135) is formed so that it protrudes into the installation space (111) so that the second coupling lip (123) is exposed into the installation space (111) formed by the main body (110).

[0072] Accordingly, the power housing (100) can be completely disassembled by separating the main body (110) by detaching the first coupling lip (115) from the coupling hole (134) on the outside, and separating the partition body (130) by detaching the second coupling lip (123), which is exposed to the outside as the main body (110) is separated, from the coupling end (135).

[0073] Additionally, the section body (130) is formed with a fixed lip (136) that supports one end of the sliding cover (310) and a guide lip (137) that guides movement on the other side of the sliding cover (310) while simultaneously supporting the second return spring (332), thereby participating in the return of the sliding cover (310).

[0074] Specifically, the fixed member (136) supports one end of the conversion member (312) formed on one side of the sliding cover (310) to prevent the sliding cover (310) from moving out of the pre-set position.

[0075] Additionally, the guide lip (137) is formed on the other side of the receiving body (3111) formed on the other side of the sliding cover (310) and supports one end of the second return spring (332) installed on the inside of the receiving body (3111), thereby generating an elastic restoring force in the second return spring (332) by the movement of the cover body (311).

[0076] At this time, an opening (3113) is formed on one side of the receiving body (3111) in the direction of movement to prevent interference with the guide lip (137) and, at the same time, allow the cover body (311) to move along the guide lip (137), thereby providing the effect of guiding the movement of the sliding cover (310).

[0077] Accordingly, the partition body (130) has a structure in which the main body (110) and the main cover (120) are combined to form a single power housing (100), and the installation space (111) is partitioned in the direction of connection so that the connection recognition part (300) and the relay terminal (200) are installed in different partitioned spaces.

[0078] Accordingly, the installation space (111) where the relay terminal (200) is installed, that is, the installation space (111) formed inside the main body (110), is prevented from communicating with the outside before the plug (20) is connected.

[0079] The relay terminal (200) is formed with an elastic body (210) that is electrically connected by direct contact with the plug terminal (22) and an extension body (220) that extends from the elastic body (210) and is connected to a connection circuit (410) formed in the circuit section (400), thereby completing a circuit to which external power is supplied.

[0080] In addition, an elastic contact lip (211) is formed at the end of the elastic body (210) to press and contact both sides of the plug terminal (22), thereby stably maintaining the contact state with the plug terminal (22).

[0081] Here, the elastic body (210) is installed inside the mounting lip (112) so that the elastic contact lip (211) is formed corresponding to the positions of the fastening hole (121) and the communication hole (131), so that the plug terminal (22) is inserted through the fastening hole (121) and stably contacts the elastic contact lip (211).

[0082] At this time, it is preferable to further form a deformation prevention lip (113) on the inner side of the seating lip (112) to maintain a gap between a pair of elastic lips, thereby preventing interference with the elastic contact lip (211) when connected to the plug terminal (22).

[0083] In summary, the relay terminal (200) of the present invention is assembled in an installation space (111) with the connecting body connected to an external power source, and at this time, the pre-set assembly position is maintained by the seating lip (112) and the deformation prevention lip (113), thereby easily electrically connecting with the plug terminal (22).

[0084] The connection recognition unit (300) is formed with a sliding cover (310) that opens the communication hole (131) in conjunction with the connection of the plug (20) and a push rod (320) that operates the recognition switch (420) in conjunction with the connection of the plug (20), thereby providing more stable electricity and protecting the relay terminal (200).

[0085] Additionally, the connection recognition unit (300) is further formed with an elastic part (330) that returns the sliding cover (310) and the push rod (320) to their original positions when the plug (20) is detached, thereby providing improved user convenience and electrical connection stability.

[0086] To this end, the sliding cover (310) is formed with a cover body (311) installed on one side of the partition body (130) to close the communication hole (131), and a conversion part (312) formed on one side of the cover body (311) to move the cover body (311) in correspondence with the position of the plug (20), thereby providing a structure in which the communication hole (131) is opened and closed in conjunction with the connection of the plug (20).

[0087] Additionally, a prevention part (313) is further formed on one side of the cover body (311) to prevent the push rod (320) from moving before the plug (20) is connected, thereby ensuring user safety and electrical connection stability.

[0088] Specifically, the sliding cover (310) is fixed to the partition body (130) by having the end of the conversion part (312) formed on one side supported by the fixed lip (136) and the end of the second return spring (332) installed inside the receiving body (3111) formed on the other side supported by the guide lip (137).

[0089] At this time, in order to accommodate the second return spring (332), it is formed with a receiving body (3111), a receiving space (3112) formed on the inner side of the receiving body (3111), and an opening (3113) that is open to one side of the receiving space (3112) and extends in the direction of movement.

[0090] Here, the receiving space (3112) is opened to one side in the direction of movement, and a guide lip (137) is positioned on the outer side in the direction of the open surface to support both ends of the second return spring (332), thereby generating an elastic restoring force in the opposite direction of movement when the sliding cover (310) moves.

[0091] Additionally, the opening (3113) is formed so that one side of the receiving body (3111) is open in the direction of movement, thereby providing a path for the guide rib (137) to move along, while simultaneously guiding the movement of the sliding cover (310) in the direction of movement.

[0092] The conversion part (312) is formed to face the fastening hole (121) and is formed to make direct contact with the plug terminal (22), and at the same time is formed as an inclined surface so as to convert the fastening force of the plug terminal (22) in the fastening direction into the moving direction.

[0093] Accordingly, the cover body (311) slides in the direction of movement corresponding to the position of the plug (20) and opens and closes the communication hole (131).

[0094] Looking at this in more detail, when the plug terminal (22) moves downward in the connection direction, the cover body (311) is moved outward in the direction of movement to open the communication hole (131), and when the plug terminal (22) moves upward in the direction of connection, the cover body (311) is moved inward in the direction of movement to close the communication hole (131).

[0095] Accordingly, the sliding cover (310) opens the communication hole (131) only when the plug (20) is connected, thereby providing a structure in which the plug terminal (22) and the relay terminal (200) can come into contact.

[0096] And, when the plug (20) is dislodged, the sliding cover (310) is returned by the second return spring (332) to close the communication hole (131) so that the relay terminal (200) is not connected to the outside.

[0097] Additionally, the conversion part (312) is preferably formed with a pair of surfaces on one side of the cover body (311) that contact each plug terminal (22) in order to stably move the sliding cover (310) by contacting each of the pair of plug terminals (22).

[0098] The prevention member (313) extends from one side of the cover body (311) and prevents the push rod (320) from moving arbitrarily in the connection direction before the plug (20) is connected. That is, it prevents the recognition switch (420) from operating arbitrarily and thus prevents external power from being supplied, thereby providing higher electrical safety.

[0099] To this end, the prevention part (313) is formed with a prevention body (3131) extending from one side of the cover body (311) and an interference projection (3132) protruding from the prevention body (3131) in the fastening direction to support the lower side of the fastening direction of the interference part (322).

[0100] Accordingly, when the plug (20) is not connected, i.e., when the sliding cover (310) closes the connection hole (131), the interference projection (3132) supports the downward direction of the connection direction of the interference section (322) to prevent movement when the push rod (320) attempts to move downward in the connection direction.

[0101] Additionally, the prevention part (313) supports the push rod (320) on one side, but moves outward in the direction of movement as the plug (20) is fastened, and the other side is formed open to release the fixing force of the interference projection (3132) and the interference end (322).

[0102] In summary, the sliding cover (310) of the present invention is installed to close a communication hole (131) on one side of the partition body (130) and blocks the installation space (111) assembled with a relay terminal (200) that generates an electrical connection when the plug (20) is not connected from the outside.

[0103] In addition, a prevention part (313) is provided with an interference projection (3132) that is supported by an interference portion (322) protruding from the rod body (321), thereby preventing the push rod (320) from arbitrarily operating the recognition switch (420).

[0104] At this time, a conversion part (312) is provided to move the sliding cover (310) by converting the fastening force in the fastening direction by the plug terminal (22) to the moving direction, thereby opening the communication hole (131) by only fastening the plug (20) and simultaneously releasing the fixing force with the interference projection (3132).

[0105] The push rod (320) is formed of a rod body (321) extended in the fastening direction, an interference section (322) extended radially from the outside of the rod body (321), and a support section (323) extended radially from the outside of the rod body (321).

[0106] At this time, the upper end of the connection direction of the load body (321) is formed to protrude a predetermined distance to the outside of the main cover (120), and the lower end of the connection direction extends to the outside of the main body (110) to operate the recognition switch (420) by connecting the plug (20).

[0107] In other words, the load body (321) protrudes outward from the main cover (120) when the plug (20) is not connected or at the initial insertion position (P1) of the plug (20), so it cannot operate the recognition switch (420), but as the plug (20) is connected, it moves downward in the connection direction and operates the recognition switch (420) at the complete connection position (P3).

[0108] Additionally, the interference portion (322) protrudes outward from the rod body (321) so that the sliding cover (310) is not moved, i.e., the plug (20) is not fastened, or the interference portion (3132) is positioned above the fastening direction of the interference portion (3132) at the initial insertion position (P1) of the plug (20), thereby generating a fixing force in the fastening direction due to interference.

[0109] However, when the plug (20) is connected, the interference projection (3132) moves in the direction of movement and is separated from the interference section (322), it has a structure that allows it to move in the direction of connection, thereby operating the recognition switch (420) at a specific location.

[0110] Here, a specific position refers to a position where the load body (321) moves to activate the recognition switch (420). For example, the degree to which the load body (321) protrudes and the distance moved for the recognition switch (420) are the same, so that the recognition switch (420) is activated only when the plug (20) is fully connected.

[0111] However, this does not necessarily mean that the degree to which the rod body (321) protrudes and the distance to be moved for the recognition switch (420) are the same, and if there is a separate structure for moving the rod body (321) in the plug (20) or main cover (120), the distance to be moved may be different.

[0112] To look at one example more specifically, the push rod (320) is moved only by the engagement operation of the plug (20), and at this time, it protrudes from the main cover (120) by a length excluding the length of the plug terminal (22) from the distance of the plug (20) for the plug terminal (22) and the relay terminal (200) to be fully engaged.

[0113] At this time, the distance the push rod (320) moves to operate the recognition switch (420) is designed to be the same as the distance protruding outward from the main cover (120), so that the recognition switch (420) is operated only when the plug terminal (22) and the relay terminal (200) are fully connected.

[0114] And, the support member (323) protrudes outward from the rod body (321) to support the upper side of the fastening direction of the first return spring (331), thereby pressing the first return spring (331) as the push rod (320) moves downward in the fastening direction.

[0115] Accordingly, an elastic restoring force is generated in the first return spring (331) in the direction of extension, and accordingly, when the plug (20) is separated from the power supply (10), the push rod (320) returns to its original position.

[0116] In summary, the push rod (320) is formed in a structure that contacts the plug body (21), but the recognition switch (420) is activated only when it is moved to the extent that it protrudes outward from the main cover (120), that is, when the plug (20) is fully connected.

[0117] Accordingly, the power supply device (10) of the present invention fundamentally prevents external power from being supplied when the plug (20) is not fully connected, or prevents the LED color indicating the supply of external power from changing.

[0118] The elastic part (330) is formed with a first return spring (331) that returns the push rod (320) to its original position when it is moved, and a second return spring (332) that returns the sliding cover (310) to its original position when it is moved, thereby closing the communication hole (131) as the plug (20) is disengaged and simultaneously fixing the push rod (320).

[0119] Specifically, the first return spring (331) is received inside the third guide body (132), the upper side in the fastening direction is supported by the support end (323), and the lower side in the fastening direction is supported by the protruding end (1322).

[0120] In addition, it is installed in a state without deformation inside the initial guide hole (1321) or in a compressed state so that no load is generated in the downward direction of the fastening direction on the push rod (320).

[0121] However, when the plug (20) is engaged and the push rod (320) moves, the support end (323) and the protruding end (1322) come closer together, and the first return spring (331) is compressed, and an elastic restoring force is generated in the direction of extension.

[0122] And the second return spring (332) is received into the receiving space (3112), supported on one side of the receiving body (3111) in the direction of movement, and supported on the guide rib (137) in the direction of movement.

[0123] In addition, it is installed in a state without deformation on the inner side of the initial guide hole (1321) or installed in a compressed state so that no load is generated on the sliding cover (310) on the outer side in the direction of movement.

[0124] However, when the plug (20) is connected and the sliding cover (310) moves, the guide lip (137) is inserted into the inner side of the receiving space (3112) and the second return spring (332) is compressed, and an elastic restoring force is generated in the direction of extension.

[0125] Therefore, when the plug (20) is connected and the sliding cover (310) and push rod (320) are moved, the elastic part (330) receives a compressive force and generates an elastic restoring force.

[0126] Accordingly, the plug terminal (22) is separated from the communication hole (131), and the plug (20) is separated from the power supply (10), thereby returning the sliding cover (310) and the push rod (320) to their original positions.

[0127] In summary, the elastic part (330) closes the communication hole (131) during the process of separating the plug (20) from the power supply (10) and simultaneously stops the operation of the recognition switch (420) so that the external power is cut off, thereby improving the safety and durability of the product.

[0128] In other words, the power supply unit (10) of the present invention is equipped with a connection recognition unit (300) linked to the connection of the plug (20), and the recognition switch (420) is operated only when the plug terminal (22) and the relay terminal (200) are fully connected.

[0129] Accordingly, external power is supplied while the plug terminal (22) and the relay terminal (200) are not fully connected, thereby reducing electrical stability and completely preventing secondary accidents such as injury to the user.

[0130] The circuit section (400) is formed with a connection circuit (410) that connects the relay terminal (200) and an external power source, and a recognition switch (420) that recognizes whether the plug (20) is connected, so that the circuit is connected or an electrical signal is generated only when the plug (20) is fully connected to perform the necessary functions.

[0131] At this time, the circuit section (400) is installed on one side of the power supply unit (10) and can be formed on the inside or outside of the power housing (100) depending on the design.

[0132] Specifically, the connection circuit (410) is connected to an external power source, but the external power is supplied only when the recognition switch (420) is activated, so that the external power is not supplied to the relay terminal (200) when the plug (20) is not connected.

[0133] Here, the circuit formed by the circuit section (400) is not limited to the connection circuit (410), and a circuit that changes the LED color to allow the user to easily recognize whether the plug (20) is fully connected may be formed.

[0134] Additionally, the recognition switch (420) is formed on one side of the circuit section (400) and operates only when the push rod (320) moves downward in the connection direction, that is, when the plug terminal (22) and the relay terminal (200) are fully connected, thereby performing the function of the connection circuit (410).

[0135] To summarize the above example, in the power supply device (10) of the present invention, the sliding cover (310) and the push rod (320) do not move in the initial insertion position (P1) where the plug (20) is not connected or the plug terminal (22) is inserted into the connection hole (121).

[0136] However, at the conversion part contact position (P2) where the plug terminal (22) contacts the conversion part (312), the sliding cover (310) begins to move outward in the direction of movement due to the fastening force of the plug (20).

[0137] At this time, depending on the degree to which the plug terminal (22) is inserted, the sliding cover (310) is gradually moved outward in the direction of movement.

[0138] Accordingly, when the sliding cover (310) moves a certain distance or more, the fixing force of the interference member (322) and the interference projection (3132) is released, and at the same time, the communication hole (131) is opened so that the plug terminal (22) moves into the interior of the main body (110) through the communication hole (131).

[0139] In addition, the push rod (320) in contact with the plug body (21) moves together in the direction of connection of the plug (20), and the plug terminal (22) gradually comes into contact with the relay terminal (200) inside the main body (110).

[0140] At this time, at the complete connection position (P3) where the plug terminal (22) and the relay terminal (200) are completely connected, the push rod (320) activates the recognition switch (420) to supply external power to the connection circuit (410) and provides it to the plug (20) through the relay terminal (200).

[0141] In addition, when the plug terminal (22) is detached from the relay terminal (200), the above process proceeds in reverse, and the sliding cover (310) and the push rod (320) return to their original positions and return to the initial state by the elastic restoring force of the elastic part (330) which receives a compressive force according to the movement of the sliding cover (310) and the push rod (320).

[0142] Accordingly, the power supply device (10) of the present invention supplies power only when fully connected to the plug (20), thereby ensuring electrical connection stability and user safety, and ensuring the reliability and durability of the product.

[0143] Although preferred embodiments of the present invention have been described illustratively above, the scope of the present invention is not limited to such specific embodiments, and any modifications that are appropriately possible within the scope described in the claims fall within the scope of protection of the present invention.

Claims

1. In a power supply unit that supplies power by being combined with a plug, Power housing with an installation space formed on the inside; A relay terminal assembled in the above installation space to electrically connect an external power source and a plug; A connection recognition unit installed to be movable in the above installation space and guiding the connection between the plug and the relay terminal; and It includes a circuit section having a connection circuit that connects the above relay terminal and an external power source, and a recognition switch that recognizes whether the plug is connected. The above-mentioned connection recognition unit A sliding cover that moves in the direction of movement and opens a communication hole formed on one side of the relay terminal, and It is formed as a push rod that moves in the direction of connection and operates the recognition switch, and A power supply device characterized by supplying external power to the connection circuit as the above push rod operates the above recognition switch.

2. In Paragraph 1, The above power housing is The above-mentioned installation space is formed in a main body, a main cover having a fastening hole into which a plug is inserted and closing the installation space, and a partition body having a communication hole formed corresponding to the position of the fastening hole between the main body and the main cover, and The above sliding cover is It is formed with a cover body that closes the communication hole on one side of the above-mentioned partition body, and a conversion part that is positioned opposite the fastening hole and moves the cover body in correspondence with the position of the plug, A power supply device characterized by a plug that sequentially penetrates the connecting hole and the communication hole and is electrically connected to the relay terminal.

3. In Paragraph 2, The above push rod is It is formed with a rod body extended in the direction of connection and an interference end protruding outwardly from the rod body, and The above sliding cover is As a preventive portion is further formed extending from one side of the above-mentioned cover body and positioned on one side of the above-mentioned interference portion, A power supply device characterized by blocking the movement of the push rod before plug connection, and detaching from the interference terminal by the movement.

4. In Paragraph 2, The above-mentioned connection recognition unit As the plug is disengaged, an elastic part that returns the sliding cover and the push rod is further formed, A power supply device characterized by closing the communication hole again as the plug is disengaged, while simultaneously relocating the prevention part to one side of the interference section.

5. In Paragraph 4, The above push rod is It is formed as a support end protruding outwardly from the above-mentioned rod body, and The above elastic part A power supply device characterized by being formed with a first return spring that extends in the fastening direction between the partition body and the support end, and a second return spring that extends in the movement direction between the partition body and the cover body.

6. In Paragraph 5, The above compartment body is A power supply device characterized by having a fixed lip that supports one side of the above-mentioned conversion part, and a guide lip that is formed on the other side of the above-mentioned cover body in a moving direction to guide the movement of the above-mentioned sliding cover.

7. In Paragraph 1, The above push rod is A power supply device characterized by operating the recognition switch only at the fully connected position of the relay terminal and the plug.

8. In Paragraph 2, The above main body is A mounting lip is further formed to form a space on which the relay terminal is seated, corresponding to the location of the above communication hole, and The above relay terminal A power supply device characterized by being formed with an elastic body that is received inside the above-mentioned mounting lip and directly contacts both sides of the plug, and a connecting part that extends from the elastic body and is connected to the connecting circuit.

9. In Paragraph 8, A power supply device characterized by the above main body having a deformation-preventing lip further formed between the elastic body and the inner side of the seating lip to prevent deformation of the elastic body.

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