Self-locking power plug

Abstract

A self-locking mains plug which is inserted into a mains socket, the mains socket comprising a socket body (21) and a plurality of conductive insertion pins (23), the socket body (21) comprising an engagement slot (22), the conductive insertion pins (23) being convexly arranged in the engagement slot (22), the self-locking mains plug comprising: an insulating base (100) comprising an engagement surface (101), an insertion direction (102) defined to the engagement surface (101), a rail (114) arranged therein parallel to the insertion direction (102), and a first channel (111), a second channel (112) and a third channel (113) communicating with the engagement surface (101) arranged therein parallel to the insertion direction (102), the first channel (111) being arranged between the second channel (112) and the third channel (113); a plurality of conductive elements (210, 220, 230) mounted in the insulating base (100) and respectively exposed from the first channel (111), the second channel (112) and the third channel (113); a locking plate (300) arranged in the insulating base (100) and transversely crossing a longitudinal direction of the first channel (111) and comprising a through hole (301), a fixed side (310) and a movable side (320) opposite the fixed side (310), wherein the fixed side (310) is positioned in the insulating base (100), the movable side (320) is movably arranged, the fixed side (310) and the movable side (320) are respectively arranged on two sides of the first channel (111), the movable side (320) is arranged to be close to the second channel (112), and the fixed side (310) is arranged to be close to the third channel (113); a sliding block (400) disposed on the rail (114) and slidable along the rail (114) between a locked position and a released position, the sliding block (400) hooking the movable side (320) of the locking plate (300) to rotate the locking plate (300), the sliding block (400) including a handle (410) extending from the insulating base (100); and an elastic unit (500) arranged in the insulating base (100) and abutting the insulating base (100) and the sliding block (400) to cause the sliding block (400) to be biased with a force along a direction opposite to the insertion direction (102) and toward the locked position; wherein, when the slide block (400) is in the released position, the locking plate (300) is arranged to be perpendicular to the longitudinal direction of the first channel (111) to cause one of the conductive insertion pins (23) to move longitudinally in the first channel (111); wherein, when the sliding block (400) is in the locked position, the locking plate (300) is in an inclined state with respect to the longitudinal direction of the first channel (111); wherein, when the insulating base (100) is inserted into the engagement slot (22), the conductive insertion pins (23) are respectively inserted into the first channel (111), the second channel (112) and the third channel (113) to be connected to each of the conductive elements (210, 220, 230), the sliding block (400) moves towards the locked position to drive the movable side (320) of the locking plate (300) to cause the locking plate (300) to rotate, the through hole (301) is inclined relative to the longitudinal rotation of the first channel (111) until an inner edge of the through hole (301) is locked at a location defined on a side edge of the conductive insertion pin (23) in the first channel (111).

Description

BACKGROUND OF THE INVENTIONTechnical field

[0001] The present disclosure relates to a power connection device, in particular to a self-locking power plug having advantages of being stably inserted and easily removed. Description of the state of the art

[0002] A power plug is a power connection device used in a prior art electronic device. After inserting the power plug into a power outlet, conductive copper sheets in the power outlet are used to clamp the power plug to prevent the power plug from being removed. Since the conductive copper sheets have limited clamping force, if a power cord is accidentally pulled by an external force, the power plug will be easily removed from the power outlet, thereby terminating the power supply status. In addition, the power plug is used to transmit high current, and the situation that the power plug is accidentally removed may cause electric shock, which is intended to improve how the power plug can be stably inserted into the power outlet and cannot be easily removed due to external force.

[0003] Accordingly, the applicant of the present disclosure has focused on improving the aforementioned bottlenecks. SUMMARY OF THE INVENTION

[0004] The present disclosure provides a self-locking power plug having the advantages of being stably inserted and easily removed.

[0005] Accordingly, the present disclosure provides a self-locking power plug that is inserted into a power outlet. The power outlet includes a socket body and a plurality of conductive insertion pins. The socket body has an engagement slot, and the conductive insertion pins are convexly arranged in the engagement slot. The self-locking power plug includes an insulating base, a plurality of conductive members, a locking plate, a sliding block, and an elastic unit. The insulating base has an engagement surface and defines an insertion direction facing the engagement surface. A rail and a first channel, a second channel, and a third channel communicating with the engagement surface are arranged in the insulating base in a direction parallel to the insertion direction, and the first channel is arranged between the second channel and the third channel.The conductive elements are mounted in the insulating base and exposed in the first channel, the second channel, and the third channel, respectively. The locking plate is arranged in the insulating base and crosses the first channel transversely. The locking plate has a through-hole, a fixed side, and a movable side opposite the fixed side. The fixed side is positioned in the insulating base and arranged on a side of the first channel closer to the third channel. The movable side is movably arranged on a side of the first channel closer to the second channel. The sliding block is arranged on the rail and slides along the rail between a locked position and a released position. The sliding block hooks the movable side of the locking plate to rotate the locking plate. The sliding block has a handle extending from the insulating base.The elastic unit is arranged in the insulating base and abuts against the insulating base and the sliding block to cause the sliding block to be biased with a force along a direction opposite to the insertion direction and toward the locked position.When the insulating base is inserted into the engagement slot, the conductive insertion pins are respectively inserted into the first channel, the second channel, and the third channel to be connected to each of the conductive elements; wherein, when the sliding block is in the released position, the locking plate is arranged to be perpendicular to a longitudinal direction of the first channel to cause the conductive insertion pin to move longitudinally in the first channel; wherein, when the sliding block is in the locked position, the movable side of the locking plate is driven by the sliding block to cause the locking plate to rotate, the through-hole being inclined relative to the reflective longitudinal rotations of the first channel until an inner edge of the through-hole is locked at a location defined at a side edge of the conductive insertion pin in the first channel.

[0006] When the self-locking power plug is inserted into the power outlet, the conductive insertion pin corresponding to the first channel abuts the movable side of the locking plate to cause the locking plate to rotate. Meanwhile, the sliding block slides from the locked position to the released position to cause the self-locking power plug to be further inserted into the power outlet. When the self-locking power plug is no longer inserted into the engagement slot, the conductive insertion pin stops pressing the locking plate, and the elastic unit pushes the sliding block toward the locked position. The locking plate rotates, and the rotations stop when the inner edge of the through-hole is locked at the position defined by the side edge of the conductive insertion pin in the first channel.Accordingly, the locking plate locks the corresponding conductive pin, and the self-locking power plug cannot be removed from the power outlet.

[0007] When it is desired that the self-locking power plug be removed from the power outlet, a user holds the handle to pull the self-locking power plug to cause the sliding block to be moved toward the released position, the sliding block drives the locking plate to rotate to cause the through hole of the locking plate to be perpendicular to the longitudinal direction of the first channel, thereby moving the conductive insertion pin in the first channel longitudinally, and the self-locking power plug is continuously pulled to be removed from the power outlet. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded perspective view showing the self-locking power plug according to an embodiment of the present disclosure; Fig. 2 is another exploded perspective view showing the self-locking power plug according to an embodiment of the present disclosure; Fig. 3 is a perspective view showing the self-locking power plug according to an embodiment of the present disclosure; Fig. 4 is another perspective view showing the self-locking power plug according to an embodiment of the present disclosure; Fig. 5 is a schematic view showing the sliding block of the power connector device in the locked position according to an embodiment of the present disclosure; Fig. 6 and Fig. 7 are schematic views showing the insertion processes of the power connection device according to an embodiment of the present disclosure; and Fig. 8 is a schematic view showing the sliding block of the power connection device located in the released position according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0008] The technical content of this disclosure will become apparent from the detailed description of embodiments accompanying the illustration of the accompanying drawings as follows. The embodiments and drawings disclosed herein are intended to be considered as illustrative and not restrictive.

[0009] Fig. 1 is an exploded perspective view showing a self-locking power plug 10 according to an embodiment of the present disclosure; and Fig. 2 is another exploded perspective view showing the self-locking power plug 10 according to an embodiment of the present disclosure. Referring to Fig. 1 and Fig. 2, the present disclosure provides a self-locking power plug 10 including an insulating base 100, a plurality of conductive members 210, 220, 2300, a locking plate 300, a sliding block 400, and an elastic unit 500.

[0010] Fig. 3 is a perspective view showing the self-locking power plug 10 according to an embodiment of the present disclosure. Referring to Fig. 3, the insulating base 100 has an engagement surface 101. The insulating base 100 defines an insertion direction 102. Essentially, the insertion direction 102 is defined as a direction vertical to the engagement surface 101.

[0011] Fig. 4 is another perspective view showing the self-locking power plug 10 according to an embodiment of the present disclosure. Referring to Fig. 1 to Fig. 4, a rail 114, a first channel 111, a second channel 112, and a third channel 113 are arranged in the insulating base 100. The first channel 111, the second channel 112, and the third channel 113 communicate with the engagement surface 101. Essentially, the insulating base 100 includes a main body 110 and a housing 120. The main body 110 is arranged in the housing 120. The first channel 111, the second channel 112, and the third channel 113 are arranged in the main body 110. The engagement surface 101 is formed on the housing 120. The engagement surface 101 has a plurality of insertion holes 121, 122, 123 longitudinally aligned with the first channel 111, the second channel 112, and the third channel 113, such that the first channel 111, the second channel 112, and the third channel 113 each communicate with the engagement surface 101. The first channel 111 is arranged on one side of the main body 110.The first channel 111 is arranged parallel with respect to the insertion direction 102. The second channel 112 and the third channel 113 are arranged on another side of the main body 110 opposite the first channel 111. The first channel 111, the second channel 112, and the third channel 113 all have an open side. The rail 114 is arranged on another side defined between the two aforementioned sides of the main body 110. Relative positions of cross sections of the first channel 111, the second channel 112, and the third channel 113 defined on the insulating base 100 are arranged in a triangle (relative to relative positions of the insertion holes 121, 122, 123 arranged on the engaging surface 101). The first channel 111 is arranged between the second channel 112 and the third channel 113.

[0012] The conductive elements 210, 220, 230 are mounted in the insulating base 100. The conductive elements 210, 220, 230 are respectively disposed in the first channel 111, the second channel 112, and the third channel 113, such that the conductive elements (210, 220, 230) are exposed in the first channel 111, the second channel 112, and the third channel 113. In some embodiments, the conductive elements 210, 220, 230 respectively extend through the open sides of the first channel 111, the second channel 112, and the third channel 113 to be disposed in the first channel 111, the second channel 112, and the third channel 113. The insulating base 100 further includes a pressing block 130. The pressing block 130 is arranged in the main body 110 and serves to press and fix the conductive element 210 in the first channel 111. The conductive elements 220, 230 in the second channel 112 and the third channel 113 are pressed and fixed by the housing 120. Referring to 。 Fig. 4, the conductive elements 210, 220, 230 are further connected to a cable 11.

[0013] With reference to Fig. 1 to Fig. 3, the locking plate 300 is arranged in the insulating base 100. The locking plate 300 is arranged between one end of the first channel 111 and the insertion hole 121 corresponding to the first channel 111, so that the locking plate 300 vertically crosses a longitudinal direction of the first channel 111. The locking plate 300 has a through hole 301, a fixed side 310, and a movable side 320 opposite the fixed side 310. The fixed side 310 of the locking plate 300 is positioned in the insulating base 100. The movable side 320 of the locking plate 300 is movably arranged. The fixed side 310 and the movable side 320 are respectively arranged on two sides of the first channel 111. The movable side 320 is arranged to be close to the second channel 112, and the fixed side 310 is arranged to be close to the third channel 113.The movable side 320 of the locking plate 300 is longitudinally aligned with the rail 114.

[0014] With reference to Fig. 2 to Fig. 4, the sliding block 400 is arranged on the rail 114. The sliding block 400 is confined to be located in the rail 114 via the housing 120, whereby the sliding block 400 slides along the rail 114. Essentially, the structure of the sliding block 400 is defined according to the rail 114 on which the sliding block 400 is arranged. The sliding block 400 has a handle 410. The handle 410 extends from the insulating base 100 to prompt a user to push the sliding block 400. The sliding block 400 has a hook 420. The hook 420 hooks the movable side 320 of the locking plate 300 to drive the locking plate 300 to rotate. One side of the sliding block 400, remote from the engagement surface 101, is convexly formed with an elongated hole 430. The elongated hole 430 extends longitudinally along the rail 114.

[0015] Fig. 5 is a schematic view showing the sliding block 400 of the power connector device in the locked position according to an embodiment of the present disclosure; Fig. 6 and Fig. 7 are schematic views showing the insertion processes of the power connection device according to an embodiment of the present disclosure; and Fig. 8 is a schematic view showing the sliding block 400 of the power connector device located in the released position according to an embodiment of the present disclosure.

[0016] The sliding block 400 slides along the rail 114 between a locked position adjacent the engagement surface 101, as shown in Fig. 5, and a released position away from the engagement surface 101, as shown in Fig. 8. With reference to Fig. 1 to Fig. 4, the elastic unit 500 is arranged in the insulating base 100 and abuts the insulating base 100 and the sliding block 400 to cause the sliding block 400 to be biased with a force along a direction opposite to the insertion direction 102 and toward the locked position. Referring to Fig. 5, the elastic unit 500 is arranged in the rail 114. The elastic unit 500 is inserted into the slotted hole 430 to be fastened. As such, the elastic unit 500 is supported by an inner wall at an end of the rail 114 remote from the engagement surface 101 to cause the elastic unit 500 to press the sliding block 400 into the locked position. As shown in Fig. 5, when the slide block 400 is in the locked position, the locking plate 300 is arranged to be inclined longitudinally with respect to the first channel 111. As shown in Fig. 8, when the slide block 400 is in the released position, the locking plate 300 is arranged to be perpendicular to the longitudinal direction of the first channel 111.

[0017] With reference to Fig. 5, the present disclosure provides a power connection device including the aforementioned self-locking power plug 10 and a power outlet 20. The power outlet 20 includes a socket body 21 and a plurality of conductive insertion pins 23 corresponding to each of the conductive elements 210, 220, 230. The socket body 21 has an engagement slot 22. The conductive insertion pins 23 are convexly arranged in the engagement slot 22.

[0018] With reference to Fig. 6 and Fig. 7, the engaging slot 22 is used to cause the insulating base 100 to be inserted therein. The conductive insertion pins 23 extend through each of the insertion holes 121, 122, 123, respectively, to be inserted into the first channel 111, the second channel 112, and the third channel 113 and connected to each of the conductive elements 210, 220, 230.

[0019] With reference to Fig. 6, when the insulating base 100 is inserted into the engaging slot 22, the conductive insertion pin 23 corresponding to the first channel 111 abuts the movable side 320 of the locking plate 300 to cause the locking plate 300 to rotate until it is perpendicular to the longitudinal direction of the first channel 111, during which time the sliding block 400 slides from the locked position to the released position. At this time, the conductive insertion pin 23 passes through the through-hole 301 of the locking plate 300 to be inserted into the first channel 111, causing the insulating base 100 to be further inserted into the engaging slot 22, and the other conductive insertion pins 23 are respectively inserted into the corresponding second channel 112 and the corresponding third channel 113.

[0020] With reference to Fig. 7. When the insulating base 100 is no longer inserted into the engagement slot 22, the conductive insertion pin 23 stops pressing the locking plate 300, and the elastic unit 500 pushes the sliding block 400 toward the locked position. When the sliding block 400 moves to the locked position, the movable side 320 of the locking plate 300 is driven by the sliding block 400 to cause the locking plate 300 to rotate. The through-hole 301 is inclined relative to the reflective longitudinal rotations of the first channel 111, causing the projection area of ​​the longitudinal cross-section of the through-hole 301 defined at the first channel 111 to gradually decrease. The locking plate 300 rotates and the rotations stop when an inner edge of the through hole 301 is locked at a location defined at a side edge of the conductive plug pin 23 in the first channel 111.Accordingly, the locking plate 300 locks the corresponding conductive insertion pin 23 so that the self-locking power plug 10 cannot be removed from the power outlet 20.

[0021] With reference to Fig. 8, when the self-locking power plug 10 is desired to be removed from the power outlet 20, the user holds the handle 410 to pull the self-locking power plug 10 to cause the sliding block 400 to be moved toward the released position, the sliding block 400 drives the locking plate 300 to rotate to cause the through hole 301 of the locking plate 300 to be perpendicular to the longitudinal direction of the first channel 111, thereby moving the conductive insertion pin 23 in the first channel 111 longitudinally, and the self-locking power plug 10 is continuously pulled to be removed from the power outlet 20.

Claims

[1] A self-locking power plug which is inserted into a mains socket, the mains socket comprising a socket body (21) and a plurality of conductive insertion pins (23), the socket body (21) comprising an engagement slot (22), the conductive insertion pins (23) being convexly arranged in the engagement slot (22), the self-locking power plug comprising: an insulating base (100) comprising an engagement surface (101), an insertion direction (102) defined to the engagement surface (101), a rail (114) arranged therein parallel to the insertion direction (102), and a first channel (111), a second channel (112) and a third channel (113) communicating with the engagement surface (101) arranged therein parallel to the insertion direction (102), the first channel (111) being arranged between the second channel (112) and the third channel (113); a plurality of conductive elements (210, 220, 230) mounted in the insulating base (100) and respectively exposed from the first channel (111), the second channel (112) and the third channel (113); a locking plate (300) arranged in the insulating base (100) and transversely crossing a longitudinal direction of the first channel (111) and comprising a through hole (301), a fixed side (310) and a movable side (320) opposite the fixed side (310), wherein the fixed side (310) is positioned in the insulating base (100), the movable side (320) is movably arranged, the fixed side (310) and the movable side (320) are respectively arranged on two sides of the first channel (111), the movable side (320) is arranged to be close to the second channel (112), and the fixed side (310) is arranged to be close to the third channel (113); a sliding block (400) disposed on the rail (114) and slidable along the rail (114) between a locked position and a released position, the sliding block (400) engaging the movable side (320) of the locking plate (300) to rotate the locking plate (300), the sliding block (400) including a handle (410) extending from the insulating base (100); and an elastic unit (500) arranged in the insulating base (100) and abutting the insulating base (100) and the sliding block (400) to cause the sliding block (400) to be biased with a force along a direction opposite to the insertion direction (102) and toward the locked position; wherein, when the slide block (400) is in the released position, the locking plate (300) is arranged to be perpendicular to the longitudinal direction of the first channel (111) to cause one of the conductive insertion pins (23) to move longitudinally in the first channel (111); wherein, when the sliding block (400) is in the locked position, the locking plate (300) is in an inclined state with respect to the longitudinal direction of the first channel (111); wherein, when the insulating base (100) is inserted into the engagement slot (22), the conductive insertion pins (23) are respectively inserted into the first channel (111), the second channel (112) and the third channel (113) to be connected to each of the conductive elements (210, 220, 230), the sliding block (400) moves towards the locked position to drive the movable side (320) of the locking plate (300) to cause the locking plate (300) to rotate, the through hole (301) is inclined relative to the longitudinal rotation of the first channel (111) until an inner edge of the through hole (301) is locked at a location defined on a side edge of the conductive insertion pin (23) in the first channel (111). [2] The self-locking power plug according to claim 1, wherein the insulating base (100) comprises a main body (110) and a housing (120), the main body (110) is disposed in the housing (120), the first channel (111), the second channel (112) and the third channel (113) are disposed in the main body (110), the engaging surface (101) is disposed on the housing (120), and the engaging surface (101) comprises a plurality of insertion holes (121, 122, 123) longitudinally aligned with the first channel (111), the second channel (112) and the third channel (113). [3] A self-locking power plug according to claim 2, wherein the locking plate (300) is arranged between one end of the first channel (111) and the insertion hole (121) corresponding to the first channel (111), and the movable side (320) of the locking plate (300) is longitudinally aligned with the rail (114). [4] Self-locking power plug according to claim 2, wherein the sliding block (400) is limited in the rail (114) via the housing (120). [5] A self-locking power plug according to claim 2, wherein the rail (114) is arranged on one side of the main body (110) and the first channel (111), the second channel (112) and the third channel (113) are arranged on another side of the main body (110) opposite the rail (114). [6] A self-locking power plug according to claim 5, wherein the first channel (111), the second channel (112) and the third channel (113) are open on one side and the conductive elements (210, 220, 230) are arranged in the first channel (111), the second channel (112) and the third channel (113), respectively. [7] A self-locking power plug according to claim 6, wherein the insulating base (100) comprises a pressing block (130), and the pressing block (130) is arranged in the main body (110) to press and fix the conductive element (210) in the first channel (111). [8] A self-locking power plug according to claim 1, wherein the elastic unit (500) abuts each of the sliding block (400) and an end of the rail (114) remote from the engagement surface (101). [9] A self-locking power plug according to claim 8, wherein the sliding block (400) comprises a slotted hole (430) and the elastic unit (500) is inserted into the slotted hole (430). [10] The self-locking power plug according to claim 1, wherein the sliding block (400) comprises a hook (420), and the hook (420) hooks the movable side (320) of the locking plate (300).

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