A leakage protection socket

Abstract

The present invention discloses a leakage protection socket, which comprises a base and a cover plate for covering the opening of the base. The base is provided with a moving reed, a wiring terminal for electrically connecting an external power cord, a circuit board electrically connected to the wiring terminal, and a switch mechanism for driving the moving reed to contact or separate from the wiring terminal. The circuit board is electrically connected with a transmission mechanism for locking or unlocking the switch mechanism. The moving reed is electrically connected with a socket sleeve. The cover plate is provided with a cover plate jack for the plug pins of a plug to be inserted into the socket sleeve. The circuit board is also electrically connected with a mutual inductor for detecting whether the socket leaks electricity. The present invention integrates the leakage protection function on the socket, realizes the automatic power-on and power-off of the socket through the switch mechanism and the transmission mechanism, has a simple structure, is convenient to operate, plays a good role in leakage protection for electrical appliances, and has strong practicability.

Description

Technical Field

[0001] The present invention relates to a leakage protection socket. Background Art

[0002] Leakage protection plugs are widely used and can be used for the leakage protection of various electrical appliances. They have high safety performance, can avoid damage to electrical appliances and reduce the occurrence of safety accidents. However, due to the high cost of leakage protection plugs, it is not suitable for all electrical plugs to be made into leakage protection plugs. The volume of leakage protection plugs is generally large, and they will occupy an entire socket when in use, greatly hindering the use of other electrical appliances. And for some electrical appliances that are already in use, it is not convenient to replace ordinary plugs with leakage protection plugs, but these electrical appliances also need leakage protection functions.

[0003] The present invention is generated based on the above problems. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies of the prior art and propose a leakage protection socket. The structure of the present invention is simple and easy to operate. The leakage protection function is integrated on the socket, which can provide leakage protection for users and electrical appliances used at its outlet end, and has strong practicability.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0006] A leakage protection socket includes a base and a cover plate for covering the opening of the base. The base is provided with a moving reed, a terminal for electrically connecting an external power cord, a circuit board electrically connected to the terminal, and a switching mechanism for driving the moving reed to contact or separate from the terminal. The circuit board is electrically connected to a transmission mechanism for locking or unlocking the switching mechanism. The moving reed is electrically connected to a socket sleeve. The cover plate is provided with a cover plate socket for the plug pins of the plug to be inserted into the socket sleeve. The circuit board is also electrically connected to a current transformer for detecting whether the socket leaks electricity.

[0007] For a leakage protection socket as described above, an inner shell is provided on the circuit board. The inner shell is provided with a guiding groove. The switching mechanism includes a moving seat that can move up and down along the guiding groove to make the moving reed contact or separate from the terminal. The moving seat is provided with a vertical first socket hole. The switching mechanism further includes a reset key that passes through the circuit board and is inserted into the first socket hole, and an elastic member for driving the reset key to move upward for resetting. The transmission mechanism includes a locking device, and the locking device is connected to a driving device for driving it to insert into the moving seat to lock the reset key on the moving seat or partially withdraw from the moving seat to unlock the reset key.

[0008] A leakage protection socket as described above, a transverse second jack is provided on the movable seat, the locking device includes a latch with one end inserted into the second jack and clamped with the reset button, and the other end clamped with the output end of the driving device, and a bayonet for the insertion of one end of the latch is provided on the reset button.

[0009] A leakage protection socket as described above, the reset button includes a key cap located above the circuit board and a plug inserted into the first jack and connected to the key cap, the bayonet is opened on the side of the plug facing the latch, the elastic member is a reset spring sleeved on the plug, and the elastic member elastically presses between the key cap and the circuit board.

[0010] A leakage protection socket as described above, one end of the latch is provided with a transverse clamping portion clamped with the reset button, and the other end is provided with a vertical clamping portion clamped with the output end of the driving device, a transverse guiding opening for the left and right movement of the latch relative to the reset button is opened on the transverse clamping portion, and a vertical guiding opening for the up and down movement of the latch relative to the output end of the driving device is opened on the vertical clamping portion.

[0011] A leakage protection socket as described above, the driving device is an electromagnet assembly electrically connected to the circuit board, and the armature of the electromagnet assembly is clamped with the vertical clamping portion.

[0012] A leakage protection socket as described above, the moving contact springs include L - pole and N - pole moving contact springs fixed on both sides of the inner shell, moving contacts are provided at the elastic free ends of the L - pole and N - pole moving contact springs and elastically press the movable seat downward, the terminal blocks include L - pole and N - pole terminal blocks, and static contacts electrically connected to the L - pole and N - pole terminal blocks are provided on the circuit board.

[0013] A leakage protection socket as described above, the socket sleeves include L - pole and N - pole socket sleeves respectively electrically connected to the L - pole and N - pole moving contact springs, the wires between the L - pole and N - pole moving contact springs and the L - pole and N - pole socket sleeves pass through the current transformer, limit posts are provided on the L - pole and N - pole moving contact springs, and limit openings for inserting the limit posts to limit excessive deformation of the L - pole and N - pole moving contact springs are opened on the circuit board.

[0014] A leakage protection socket as described above, wherein the terminal block includes an E-pole terminal block, the socket sleeve includes an E-pole socket sleeve electrically connected to the E-pole terminal block, the base is provided with an E-pole receiving groove for placing the E-pole terminal block and an E-pole socket sleeve seat for covering the upper opening of the E-pole receiving groove to fix the E-pole terminal block in the E-pole receiving groove. The E-pole socket sleeve seat is provided with an E-pole socket sleeve chamber for placing the E-pole socket sleeve. The pin of the E-pole socket sleeve passes through the E-pole socket sleeve seat and extends into the E-pole receiving groove. A first pressing plate is clamped on the base to press the E-pole socket sleeve, the E-pole socket sleeve seat and the E-pole terminal block together. An E-pole jack is provided on the first pressing plate above the E-pole socket sleeve seat.

[0015] A leakage protection socket as described above, wherein the L-pole and N-pole socket sleeves are fixed between the first pressing plate and the base, and L-pole and N-pole jacks are provided on the first pressing plate above the L-pole and N-pole socket sleeves.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The present invention integrates the leakage protection function on the socket, and realizes the automatic power-on and power-off of the socket through the switch mechanism and the transmission mechanism. The structure is simple, the operation is convenient, and it plays a very good role in protecting the electrical appliances from leakage, with strong practicability.

[0018] 2. Each component of the present invention is clamped on the base by a clamping method, which greatly simplifies the installation process of the socket during production, greatly improves the production efficiency, and the qualified rate of the finished product is high. [Description of the Drawings]

[0019] Figure 1 is a perspective view of the present invention;

[0020] Figure 2 is Figure 1 the exploded view of

[0021] Figure 3 is one of the exploded views of the internal structure of the present invention;

[0022] Figure 4 is the second exploded view of the internal structure of the present invention. [Detailed Embodiments]

[0023] This part will describe the specific embodiments of the present invention in detail. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0024] Such as Figures 1 to 4As shown in the figure, a leakage protection socket includes a base 10 and a cover plate 11 that seals the opening of the base 10. The base 10 is provided with a moving reed 2, a terminal 3 for electrically connecting an external power cord, a circuit board 7 electrically connected to the terminal 3, and a switch mechanism for driving the moving reed 2 to contact or separate from the terminal 3. The circuit board 7 is electrically connected to a transmission mechanism for locking or unlocking the switch mechanism. The moving reed 2 is electrically connected to a socket sleeve 4. The cover plate 11 is provided with a cover plate socket hole 12 for the plug pins of a plug to be inserted into the socket sleeve 4. The circuit board 7 is also electrically connected to a current transformer 70 for detecting whether the socket is leaking electricity.

[0025] Before the power supply of the present invention is turned on, the moving reed 2 and the terminal 3 are in a disconnected state, and the socket sleeve 4 is not charged, which plays a protective role for the electrical appliance. After the power supply of the present invention is turned on, the user needs to manually press the switch mechanism once. The switch mechanism drives the moving reed 2 to contact the terminal 3, and after the switch mechanism is pressed, it is locked by the transmission mechanism so that the moving reed 2 and the terminal 3 remain in a conducting state, and the socket sleeve 4 is powered on, thereby turning on the power supply of the electrical appliance powered by the present invention. When electric leakage occurs at one end of the electrical appliance, the current transformer 70 transmits the detected leakage signal to the circuit board 7. The circuit board 7 sends a control signal to the transmission mechanism. The transmission mechanism unlocks the switch mechanism, and the switch mechanism resets to separate the moving reed 2 from the terminal 3, and the socket sleeve 4 is powered off, thereby playing a role in protecting the user or the electrical appliance from electric leakage. After the user eliminates the leakage factor, the user presses the switch mechanism manually once again to turn on the power supply of the electrical appliance. The present invention has a simple structure, is convenient to operate, plays a good role in protecting the electrical appliance from electric leakage, and has strong practicability.

[0026] The circuit board 7 is provided with an inner shell 8. The inner shell 8 is provided with a guiding groove 80. The switch mechanism includes a moving seat 50 that can move up and down along the guiding groove 80 to make the moving reed 2 contact or separate from the terminal 3. The moving seat 50 is provided with a vertical first jack 500. The switch mechanism further includes a reset key 51 that passes through the circuit board 7 and is inserted into the first jack 500, and an elastic member 52 that drives the reset key 51 to move upward for reset. The transmission mechanism includes a locking device 60. The locking device 60 is connected to a driving device 61 that drives it to insert into the moving seat 50 to lock the reset key 51 on the moving seat 50 or partially withdraw from the moving seat 50 to unlock the reset key 51.

[0027] Under normal conditions, the driving device 61 drives the locking device 60 to insert into the first jack 500. After the reset key 51 is pressed, the locking device 60 locks the reset key 51 and the moving seat 50 together. Under the elastic force of the elastic member 52, the reset key 51 and the moving seat 50 are pressed upward together. The moving seat 50 moves upward along the guiding groove 80 and presses the elastic free end of the moving contact piece 2 against the terminal 3, thereby turning on the power supply of the socket 4. When electric leakage occurs, the driving device 61 drives the locking device 60 to partially withdraw from the moving seat 50 to unlock the reset key 51. The moving seat 50 moves downward to reset under the pressing of the elastic free end of the moving contact piece 2, and the moving contact piece 2 disengages from the terminal 3, thereby turning off the power supply of the socket 4.

[0028] A transverse second jack 501 is provided on the moving seat 50. The locking device 60 includes a lock catch 600 with one end inserted into the second jack 501 and clamped with the reset key 51, and the other end clamped with the output end of the driving device 61. A bayonet 510 is provided on the reset key 51 for one end of the lock catch 600 to be inserted into.

[0029] When the reset key 51 is pressed, the lock catch 600 is inserted into the bayonet 510, and the reset key 51 can be locked on the moving seat 50. When the driving device 61 drives the lock catch 600 to move leftward, the lock catch 600 disengages from the bayonet 510, and the reset key 51 can be unlocked. The reset key 51 moves upward to reset and partially withdraws from the moving seat 50, and the moving seat 50 moves downward to reset.

[0030] The reset key 51 includes a key cap 511 located above the circuit board 7 and a plug rod 512 connected to the key cap 511 and inserted into the first jack 500. The bayonet 510 is opened on the side of the plug rod 512 facing the lock catch 600. The elastic member 52 is a reset spring sleeved on the plug rod 512, and the elastic member 52 elastically presses between the key cap 511 and the circuit board 7.

[0031] One end of the lock catch 600 is provided with a transverse clamping portion 601 for clamping with the reset key 51, and the other end is provided with a vertical clamping portion 602 for clamping with the output end of the driving device 61. A transverse guiding opening 603 for the lock catch 600 to move left and right relative to the reset key 51 is opened on the transverse clamping portion 601, and a vertical guiding opening 604 for the lock catch 600 to move up and down relative to the output end of the driving device 61 is opened on the vertical clamping portion 602.

[0032] By providing the transverse guiding opening 603, the lock catch 600 can move left and right relative to the plug rod 512 under the drive of the driving device 61 to avoid tripping. By providing the vertical guiding opening 604, the lock catch 600 remains clamped with the output end of the driving device 61 when moving up and down with the moving seat 50 to avoid tripping, so that the lock catch 600 can remain clamped with the output end of the driving device 61 and the plug rod 512 when moving up and down and left and right.

[0033] The driving device 61 is an electromagnet assembly electrically connected to the circuit board 7, and the armature of the electromagnet assembly is clamped to the vertical clamping portion 602.

[0034] The moving reed 2 includes L-pole and N-pole moving reeds 21 and 22 fixed on both sides of the inner shell 8. Moving contacts 24 are respectively provided at the elastic free ends of the L-pole and N-pole moving reeds 21 and 22 and press the moving seat 50 downward elastically. The wiring terminals 3 include L-pole and N-pole wiring terminals 31 and 32, and two static contacts 34 electrically connected to the L-pole and N-pole wiring terminals 31 and 32 respectively are provided on the circuit board 7.

[0035] When the moving seat 50 moves upward, it presses the moving contact 24 to contact the static contact 34, so that the L-pole and N-pole moving reeds 21 and 22 are correspondingly electrically connected to the L-pole and N-pole wiring terminals 31 and 32, and the electrical contact effect is better. The elastic free ends of the L-pole and N-pole moving reeds 21 and 22 face downward. After the moving seat 50 is unlocked, it moves downward and resets under the elastic force of the L-pole and N-pole moving reeds 21 and 22.

[0036] The socket 4 includes L-pole and N-pole sockets 41 and 42 respectively electrically connected to the L-pole and N-pole moving reeds 21 and 22. The wires between the L-pole and N-pole moving reeds 21 and 22 and the L-pole and N-pole sockets 41 and 42 pass through the current transformer 70. Limit posts 25 are respectively provided on the L-pole and N-pole moving reeds 21 and 22, and limit ports 71 for inserting the limit posts 25 to limit excessive deformation of the L-pole and N-pole moving reeds 21 and 22 are formed on the circuit board 7.

[0037] The limit ports 71 limit the elastic free ends of the L-pole and N-pole moving reeds 21 and 22 to deform within a certain range, avoiding excessive deformation and damage of the moving reed 2. At the same time, when the limit posts 25 contact the left and right sides of the limit ports 71, it can play a good buffering role for the moving reed 2.

[0038] The wiring terminal 3 includes an E-pole wiring terminal 33. The socket 4 includes an E-pole socket 43 electrically connected to the E-pole wiring terminal 33. An E-pole receiving groove 103 for placing the E-pole wiring terminal 33 and an E-pole socket seat 13 for covering the upper opening of the E-pole receiving groove 103 to fix the E-pole wiring terminal 33 in the E-pole receiving groove 103 are provided on the base 10. An E-pole socket chamber 131 for placing the E-pole socket 43 is provided on the E-pole socket seat 13. The pin of the E-pole socket 43 passes through the E-pole socket seat 13 and extends into the E-pole receiving groove 103. A first pressing plate 14 that presses the E-pole socket 43, the E-pole socket seat 13, and the E-pole wiring terminal 33 together is clamped on the base 10. An E-pole jack 143 located above the E-pole socket seat 13 is formed on the first pressing plate 14.

[0039] The L - pole and N - pole socket sleeves 41 and 42 are fixed between the first pressing plate 14 and the base 10. The first pressing plate 14 is provided with L - pole and N - pole jacks 141 and 142 above the L - pole and N - pole socket sleeves 41 and 42.

[0040] After the first pressing plate 14 is snap - connected to the base 10, the L - pole, N - pole, and E - pole socket sleeves 41, 42, and 43 are well fixed on the base 10, preventing the pins of the plug from shifting in position when inserted. Since the E - pole socket sleeve 43 and the E - pole terminal 33 are separate components and are not fixedly connected to other components, and these two components are small in size, it is not easy to assemble them or fix their positions during assembly. When assembling the socket, first place the E - pole terminal 33 in the E - pole receiving groove 103, then cover the E - pole socket sleeve seat 13, which can easily and flexibly limit the E - pole terminal 33 in the E - pole receiving groove 103. Then place the E - pole socket sleeve 43 in the E - pole socket sleeve chamber 131, which can also easily and flexibly limit the E - pole socket sleeve 43 in the E - pole socket sleeve chamber 131. Finally, cover the first pressing plate 14. After the first pressing plate 14 is snap - connected to the base 10, it seals the upper opening of the E - pole socket sleeve seat 13 and firmly presses the E - pole socket sleeve seat 13 on the base 10, thus fixing the E - pole socket sleeve 43 and the E - pole terminal 33 in the E - pole socket sleeve chamber 131 and the E - pole receiving groove 103 respectively, greatly simplifying the installation process of the socket during production, greatly improving production efficiency, and having a high qualified rate of the finished product.

[0041] The cover plate 11 can be an integral structure or a split structure. The split cover plate 11 includes a panel 111 and a decorative frame 110 that are snap - connected to each other. When the socket of the present invention is a three - hole socket, there is one L - pole socket sleeve 41, one N - pole socket sleeve 42, and one E - pole socket sleeve 43, forming a three - pole socket sleeve. When the present invention is a five - hole socket, it can be divided into a three - pole socket sleeve and a two - pole socket sleeve, and the L - pole and N - pole of the two - pole socket sleeve are electrically connected to the L - pole and N - pole of the three - pole socket sleeve respectively, so that both the three - pole socket sleeve and the two - pole socket sleeve have a leakage protection function.

[0042] The above - mentioned embodiments are only the preferred solutions of the present invention. The present invention can also have other implementation schemes, such as reasonably combining the technical solutions described in multiple embodiments. Those skilled in the art can also make equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included within the scope set by the claims of this application.

Claims

1. A leakage protection socket, characterized in that: it includes a base (10) and a cover plate (11) covering the opening of the base (10). A moving reed (2), a wiring terminal (3) for electrically connecting an external power cord, a circuit board (7) electrically connected to the wiring terminal (3), and a switch mechanism for driving the moving reed (2) to contact or separate from the wiring terminal (3) are provided on the base (10). The circuit board (7) is electrically connected to a transmission mechanism for locking or unlocking the switch mechanism. The moving reed (2) is electrically connected to a socket (4). A cover plate jack (12) for inserting the pin of a plug into the socket (4) is provided on the cover plate (11). An inductor (70) for detecting whether the socket is leaking electricity is also electrically connected to the circuit board (7); an inner shell (8) is provided on the circuit board (7). A guiding groove (80) is provided on the inner shell (8). The switch mechanism includes a moving seat (50) that can move up and down along the guiding groove (80) to make the moving reed (2) contact or separate from the wiring terminal (3). A vertical first jack (500) is provided on the moving seat (50). The switch mechanism further includes a reset key (51) passing through the circuit board (7) and inserted into the first jack (500), and an elastic member (52) for driving the reset key (51) to move upward for reset. The transmission mechanism includes a locking device (60). The locking device (60) is connected to a driving device (61) for driving it to insert into the moving seat (50) to lock the reset key (51) on the moving seat (50) or partially withdraw from the moving seat (50) to unlock the reset key (51); the moving reed (2) includes L-pole and N-pole moving reeds (21, 22) fixed on both sides of the inner shell (8). Moving contacts (24) are provided at the elastic free ends of the L-pole and N-pole moving reeds (21, 22), and the moving seat (50) is elastically pressed downward. The wiring terminal (3) includes L-pole and N-pole wiring terminals (31, 32). Static contacts (34) electrically connected to the L-pole and N-pole wiring terminals (31, 32) are provided on the circuit board (7); the socket (4) includes L-pole and N-pole sockets (41, 42) electrically connected to the L-pole and N-pole moving reeds (21, 22) respectively. Wires between the L-pole and N-pole moving reeds (21, 22) and the L-pole and N-pole sockets (41, 42) pass through the inductor (70). Position-limiting posts (25) are provided on the L-pole and N-pole moving reeds (21, 22). Position-limiting openings (71) for inserting the position-limiting posts (25) to limit excessive deformation of the L-pole and N-pole moving reeds (21, 22) are provided on the circuit board (7); The terminal block (3) includes an E-pole terminal block (33), the socket sleeve (4) includes an E-pole socket sleeve (43) electrically connected to the E-pole terminal block (33), the base (10) is provided with an E-pole receiving groove (103) for placing the E-pole terminal block (33) and an E-pole socket sleeve seat (13) for covering the upper opening of the E-pole receiving groove (103) to fix the E-pole terminal block (33) in the E-pole receiving groove (103). The E-pole socket sleeve seat (13) is provided with an E-pole socket sleeve chamber (131) for placing the E-pole socket sleeve (43). The pin of the E-pole socket sleeve (43) passes through the E-pole socket sleeve seat (13) and extends into the E-pole receiving groove (103). A first pressing plate (14) is clamped on the base (10) to press the E-pole socket sleeve (43), the E-pole socket sleeve seat (13), and the E-pole terminal block (33) together. An E-pole jack (143) located above the E-pole socket sleeve seat (13) is opened on the first pressing plate (14). A transverse second jack (501) is opened on the moving seat (50). The locking device (60) includes a lock catch (600) with one end inserted into the second jack (501) and clamped with the reset key (51), and the other end clamped with the output end of the driving device (61). A bayonet (510) into which one end of the lock catch (600) can be inserted is opened on the reset key (51).

2. A leakage protection socket according to claim 1, characterized in that: The reset key (51) includes a key cap (511) located above the circuit board (7) and a plug rod (512) connected to the key cap (511) and inserted into the first jack (500). The bayonet (510) is opened on the side of the plug rod (512) facing the lock catch (600). The elastic member (52) is a reset spring sleeved on the plug rod (512), and the elastic member (52) elastically presses between the key cap (511) and the circuit board (7).

3. A leakage protection socket according to claim 1, characterized in that: One end of the lock catch (600) is provided with a horizontal clamping portion (601) clamped with the reset key (51), and the other end is provided with a vertical clamping portion (602) clamped with the output end of the driving device (61). A horizontal guiding port (603) for the lock catch (600) to move left and right relative to the reset key (51) is opened on the horizontal clamping portion (601), and a vertical guiding port (604) for the lock catch (600) to move up and down relative to the output end of the driving device (61) is opened on the vertical clamping portion (602).

4. A leakage protection socket according to claim 3, characterized in that: The driving device (61) is an electromagnet assembly electrically connected to the circuit board (7), and the armature of the electromagnet assembly is clamped with the vertical clamping portion (602).

5. A leakage protection socket according to claim 1, characterized in that: The L-pole and N-pole sockets (41, 42) are fixed between the first pressing plate (14) and the base (10), and L-pole and N-pole jacks (141, 142) are formed on the first pressing plate (14) above the L-pole and N-pole sockets (41, 42).

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