An anti-electric shock power adapter

Abstract

The present invention belongs to the technical field of power adapters, and specifically relates to an anti-electric shock power adapter. It includes a shell, an end cover, a guide rod, a connecting assembly, a positioning assembly, a pin and a push-connection assembly; the connecting assembly includes a base, an electrode holder, and an electrode member. Locking assemblies are installed on both sides of the base. The locking assemblies include an insulating block, a rotatable movable lock, and a fixed lock. A rotating shaft is rotatably installed in the insulating block, a rotating plate is installed on the rotating shaft, and a push rod and a pressure block are respectively installed at both ends of the rotating plate. An insulating button is installed on the shell. According to the user's habit of using fixed pins, the user will press the insulating button on the shell and unplug the adapter from the socket. The insulating button will drive the pressure block to move, so that the movable lock is disengaged from the fixed lock. Under the rebound action of the reset spring, the base drives the pin to be retracted into the shell through the positioning assembly, thereby preventing the user from getting an electric shock due to the habit of using fixed pins.

Description

Technical Field

[0001] The present invention belongs to the technical field of power adapters, and in particular relates to an electric shock protection power adapter. Background Art

[0002] A power adapter is a power supply conversion device for small portable electronic devices and electronic appliances. Its working principle is to convert AC input into DC output. It is also called an external power supply. It is a power supply voltage conversion device for small portable electronic devices and electronic appliances. It is commonly found in small electronic products such as mobile phones, LCD monitors and laptops.

[0003] In the related art, there is a risk of electric shock when inserting or removing the pins on the power adapter from the socket of the power outlet. In particular, when used by children, they may be electrocuted if their fingers touch the pins. The existing technology solves this problem by using retractable pins, such as the invention patent with publication number CN114552266A. However, this solution has the following problems when used:

[0004] First, when the power adapter needs to be plugged in, the positioning pin is first inserted into the power socket, and then the pin assembly is extended from the power adapter through the push member to connect the pin to the socket; when the power adapter needs to be unplugged, the user usually unplugs the power adapter directly according to the usage habit of the fixed pin. During this process, the user's fingers can easily come into contact with the pin, causing electric shock.

[0005] Second, during the use of the power adapter, the pins need to be frequently extended and retracted. At this time, the pins are prone to wear and tear at the sliding connection parts with the charger body, causing the pins to loosen. The loose pins may generate an arc when contacting the socket, posing a safety hazard. Summary of the Invention

[0006] The purpose of the present invention is to provide an anti-electric shock power adapter to address the shortcomings of the prior art and solve the technical problems in the prior art.

[0007] The objectives of the present invention can be achieved through the following technical solutions: an anti-electric shock power adapter, which includes a shell, an end cover is installed at the end of the shell, a guide rod is installed on the end cover, the guide rod slides with the connecting assembly, a positioning assembly is installed on the end cover, a pin is installed on the connecting assembly, the pin slides with the positioning assembly, a hollow opening and a USB connector are installed on the shell, a circuit board is installed in the shell, the USB connector is connected to the circuit board, a push assembly is slidably installed in the hollow opening, and the push assembly pushes the connecting assembly to move; the connecting assembly includes a base, the base is connected to the end cover through a reset spring, an electrode seat and an electrode member are installed on the base, the base is connected to the circuit board through the electrode member, a lock assembly is installed on both sides of the base, the lock assembly includes an insulating block, insulating blocks are installed on both sides of the base, a rotatable movable lock is installed on the insulating block, a fixed lock is installed on the end cover, the fixed lock is engaged with the movable lock, a rotating shaft is rotatably installed in the insulating block, a rotating plate is installed on the rotating shaft, a push rod and a pressure block are respectively installed at both ends of the rotating plate, the push rod is connected to the movable lock, an insulating button is installed on the shell, and the movable lock fits the insulating button.

[0008] As a further optimization or improvement of this solution, a connecting platform is installed on the insulating block, and a movable lock is rotatably installed on the connecting platform.

[0009] As a further optimization or improvement of this solution, the rotating plate is connected to the inner wall of the insulating block via a compression spring.

[0010] As a further optimization or improvement of this solution, a guide plate is installed in the shell, the push-connection assembly includes a sliding part, a connecting part is installed on the sliding part, the connecting part is connected to the base, a shoulder is installed on the sliding part, and the guide plate abuts against the shoulder.

[0011] As a further optimization or improvement of this solution, the positioning assembly includes a positioning head, an inner cavity is opened in the positioning head, and a laminating roller is installed at the end of the positioning head, and the laminating roller is in contact with the pin.

[0012] As a further optimization or improvement of this solution, a clamping block is installed in the inner cavity for oblique sliding, an inclined platform is installed on the inner wall of the end cover, the inclined platform is connected to the clamping block through an inclined spring, and a push plate is installed on the base to press the clamping block.

[0013] As a further optimization or improvement of this solution, the shell and the end cover are snap-connected, and the end cover can be removed from the shell.

[0014] Beneficial effects of the present invention:

[0015] (1) When the user unplugs the power adapter, according to the user's habit of using fixed pins, the user will press the insulating button on the shell and unplug the adapter from the socket. When the user presses the insulating button, the insulating button will drive the pressure block to move, and the pressure block will drive the rotating plate to rotate, so that the push rod on the rotating plate drives the movable lock to rotate along the rotating shaft on the connecting platform, so that the movable lock is disengaged from the fixed lock. Under the action of the reset spring, the base is reset. At this time, the base drives the pin to be retracted into the shell through the positioning component. Therefore, when the user presses the insulating button on the shell and unplugs the adapter from the socket, the pin is retracted into the shell under the action of the reset spring, avoiding the user from getting an electric shock due to the habit of using fixed pins.

[0016] (2) The positioning head of the present invention is provided with an inner cavity to reduce the wear contact area between the positioning component and the pins. The wear of the positioning component and the pins is avoided by the contact between the laminating roller at the end of the positioning head and the pins.

[0017] Specifically, when the adapter is inserted into the power outlet, the sliding portion pushes the pins on the base out of the positioning assembly, connecting the pins to the power outlet. During this process, the push plate on the base presses the clamping block. The inclined surface on the clamping block cooperates with the inclined groove in the inner cavity, and the clamping block approaches the pins, clamping the base of the pins. The clamping block reinforces the pins and prevents them from loosening. When the adapter is removed from the outlet, the inclined spring rebounds and drives the clamping block away from the pins, preventing the pins from wearing on the clamping block during the extension and retraction process, which could cause the clamping block to lose its fixation on the pins. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the front side of the present invention.

[0020] Figure 2 It is a schematic diagram of the overall structure of the back side of the present invention.

[0021] Figure 3 Schematic diagram of the internal structure of the shell.

[0022] Figure 4 A schematic diagram of the circuit board structure.

[0023] Figure 5 It is a top view of the internal structure of the shell.

[0024] Figure 6 This is a diagram of the coordination between the push-to-connect component and the connection component.

[0025] Figure 7 This is a diagram of the connection component and the locking component.

[0026] Figure 8 for Figure 7 A magnified view of the structure of part A.

[0027] Figure 9 for Figure 7 A magnified view of the structure of part B.

[0028] Figure 10 It is an exploded view of the overall structure of the back of the present invention.

[0029] Figure 11 This is an exploded view of the overall structure of the front side of the present invention.

[0030] The following are marked in the figure: 1. Shell; 2. End cover; 3. Positioning assembly; 301. Positioning head; 302. Inner cavity; 303. Laminating roller; 304. Clamping block; 305. Inclined spring; 306. Inclined platform; 4. Pin; 5. Insulating button; 6. Push-connect assembly; 601. Sliding part; 602. Shoulder block; 603. Connecting part; 7. USB connector; 8. Connecting assembly; 801. Base; 802. Electrode holder; 803. Electrode part; 9. Locking assembly; 901. Insulating block; 902. Turning plate; 903. Pressing block; 904. Rotating shaft; 905. Push rod; 906. Connecting platform; 907. Movable lock; 908. Fixed lock; 909. Compression spring; 10. Circuit board; 11. Hollow opening; 12. Guide plate; 13. Guide rod; 14. Reset spring; 15. Push plate. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] See also Figures 1-11, an anti-electric shock power adapter, which includes a shell 1, an end cover 2 is installed at the end of the shell 1, a guide rod 13 is installed on the end cover 2, the guide rod 13 is slidably matched with the connecting component 8, a positioning component 3 is installed on the end cover 2, a pin 4 is installed on the connecting component 8, the pin 4 is slidably matched with the positioning component 3, a hollow opening 11 and a USB connector 7 are installed on the shell 1, a circuit board 10 is installed in the shell 1, the USB connector 7 is connected to the circuit board 10, a push-connection component 6 is slidably installed in the hollow opening 11, and the push-connection component 6 pushes the connecting component 8 to move; the connecting component 8 includes a base 801, the base 801 is connected to the end cover 2 by a reset spring 14, and an electrode seat 802 and an electrode member 8 are installed on the base 801 03. The base 801 is connected to the circuit board 10 through the electrode member 803. The locking assembly 9 is installed on both sides of the base 801. The locking assembly 9 includes an insulating block 901. Insulating blocks 901 are installed on both sides of the base 801. A rotatable movable lock 907 is installed on the insulating block 901. A fixed lock 908 is installed on the end cover 2. The fixed lock 908 is engaged with the movable lock 907. A rotating shaft 904 is rotatably installed in the insulating block 901. A rotating plate 902 is installed on the rotating shaft 904. A push rod 905 and a pressure block 903 are respectively installed at both ends of the rotating plate 902. The push rod 905 is connected to the movable lock 907. An insulating button 5 is installed on the shell 1, and the movable lock 907 fits the insulating button 5.

[0033] Specifically, a connecting platform 906 is installed on the insulating block 901 , and a movable lock 907 is rotatably installed on the connecting platform 906 .

[0034] Specifically, the rotating plate 902 is connected to the inner wall of the insulating block 901 via a compression spring 909 .

[0035] It should be noted that the circuit board 10 is connected to the USB connector 7 and the connection assembly 8, respectively. This connection method is prior art and is not described in detail in this application, as it does not affect the integrity of this solution. By pushing the push-connect assembly 6, the pin 4 is extended from the interior of the housing 1. At this time, the fixed lock 908 and the movable lock 907 fix the pin 4 in place, and the pressure block 903 is pressed against the back of the insulating button 5. By pressing the insulating button 5, the pin 4 is automatically retracted. As the pin 4 retracts, the push-connect assembly 6 resets, and the pressure block 903 moves away from the insulating button 5.

[0036] It should be noted that when the power adapter needs to be unplugged, the user usually directly unplugs the power adapter according to the usage habit of the fixed pin 4. At this time, the user's fingers can easily come into contact with the pin 4, causing electric shock.

[0037] Based on the user's usage habits; when using the present invention, first insert the positioning component 3 into the power socket, then push the push-connection component 6, at this time the sliding part 601 slides along the hollow opening 11, and the sliding part 601 pushes the base 801 to move through the connecting part 603, so that the pin 4 on the base 801 extends from the positioning component 3, so that the pin 4 is connected to the power socket. During this process, the base 801 gradually approaches the end cover 2, the return spring 14 is compressed, the movable lock head 907 is engaged with the fixed lock head 908, and the pressure block 903 contacts the back of the insulating button 5. At this time, the position of the connecting component 8 and the pin 4 is fixed, and the power adapter is powered on;

[0038] When the user unplugs the power adapter, according to the user's habit of using the fixed pin 4, the user will press the insulation button 5 on the housing 1 and unplug the adapter from the socket. When the user presses the insulation button 5, the insulation button 5 will drive the pressure block 903 to move. Figure 9 , the pressing block 903 drives the rotating plate 902 to rotate, so that the push rod 905 on the rotating plate 902 drives the movable lock head 907 to rotate along the rotating shaft on the connecting platform 906, so that the movable lock head 907 disengages from the fixed lock head 908, and under the rebound action of the reset spring 14, the base 801 is reset. At this time, the base 801 drives the pin 4 to be retracted into the shell 1 through the positioning component 3. At the same time, the base 801 drives the sliding part 601 to slide outward of the shell 1 through the hollow opening 11, so that the pushing component 6 is reset. Therefore, when the user presses the insulating button 5 on the shell 1 and unplugs the adapter from the jack, the pin 4 is retracted into the inside of the shell 1 under the action of the reset spring 14, avoiding the user from getting an electric shock due to the habit of using the fixed pin 4.

[0039] It should be noted that an arc-extinguishing plate is installed on the base 801 to prevent arcing when the reset spring 14 drives the pin 4 back into the housing 1. The insulating button 5 can be made of eye-catching red insulating rubber. Similarly, the insulating buttons 5 can be located on the other two sides of the housing 1 or on all four sides of the housing 1. The insulating buttons 5 can be linked by elastic members to improve convenience during use.

[0040] See also Figure 3 and Figure 6 A guide plate 12 is installed in the shell 1, and the push-connection component 6 includes a sliding portion 601, a connecting portion 603 is installed on the sliding portion 601, and the connecting portion 603 is connected to the base 801. A shoulder 602 is installed on the sliding portion 601, and the guide plate 12 abuts against the shoulder 602.

[0041] It should be noted that a shoulder 602 is installed on the sliding part 601. When the reset spring 14 rebounds and drives the sliding part 601 to reset, the shoulder 602 on the sliding part 601 limits the sliding part 601 by abutting against the guide plate 12, thereby preventing the sliding part 601 from detaching from the inside of the shell 1.

[0042] See also Figure 6-Figure 8 The positioning assembly 3 includes a positioning head 301 , an inner cavity 302 is opened in the positioning head 301 , and a laminating roller 303 is installed at the end of the positioning head 301 , and the laminating roller 303 is in contact with the pin 4 .

[0043] Specifically, the clamping block 304 is installed in the inner cavity 302 for oblique sliding, and the inclined platform 306 is installed on the inner wall of the end cover 2. The inclined platform 306 is connected to the clamping block 304 through an inclined spring 305. The push plate 15 is installed on the base 801, and the push plate 15 presses the clamping block 304.

[0044] It should be noted that during the use of the power adapter, the pin 4 needs to be frequently extended and retracted. At this time, the pin 4 is prone to wear and tear between the positioning component 3, causing the pin 4 to become loose.

[0045] Based on this, the positioning head 301 of the present invention is provided with an inner cavity 302 to reduce the wear contact area between the positioning component 3 and the pin 4. The contact between the positioning component 3 and the pin 4 by the laminating roller 303 at the end of the positioning head 301 and the pin 4 is avoided to prevent wear between the positioning component 3 and the pin 4.

[0046] When the adapter is inserted into the power outlet, the sliding portion 601 pushes the pin 4 on the base 801 out of the positioning assembly 3, connecting the pin 4 to the power outlet. During this process, the push plate 15 on the base 801 presses the clamping block 304. With the cooperation of the inclined surface on the clamping block 304 and the inclined groove of the inner cavity 302, the clamping block 304 approaches the pin 4, clamping the base of the pin 4. The clamping block 304 reinforces the pin 4 and prevents it from loosening. When the adapter is removed from the outlet, the inclined spring 305 rebounds and drives the clamping block 304 away from the pin 4, preventing the pin 4 from wearing on the clamping block 304 during the extension and retraction process, which may cause the clamping block 304 to lose its fixation on the pin 4.

[0047] See also Figure 1-Figure 3 The shell 1 and the end cover 2 are connected by a snap-fit connection, and the end cover 2 can be removed from the shell 1.

[0048] It should be noted that when the power adapter is to be repaired, the end cover 2 can be directly removed from the housing 1 , thereby facilitating repair of the adapter.

[0049] The working principle of the present invention is based on the user's habit of using fixed pins 4. When using the present invention, first insert the positioning component 3 into the power socket, then push the push-connection component 6. At this time, the sliding part 601 slides along the hollow opening 11. The sliding part 601 pushes the base 801 to move through the connecting part 603, so that the pin 4 on the base 801 extends from the positioning component 3, so that the pin 4 is connected to the power socket. During this process, the base 801 gradually approaches the end cover 2, the return spring 14 is compressed, the movable lock head 907 is engaged with the fixed lock head 908, and the pressure block 903 contacts the back of the insulating button 5. At this time, the position of the connecting component 8 and the pin 4 is fixed, and the power adapter is powered on.

[0050] When the user unplugs the power adapter, according to the user's habit of using the fixed pin 4, the user will press the insulation button 5 on the housing 1 and unplug the adapter from the socket. When the user presses the insulation button 5, the insulation button 5 will drive the pressure block 903 to move. Figure 9 , the pressing block 903 drives the rotating plate 902 to rotate, so that the push rod 905 on the rotating plate 902 drives the movable lock head 907 to rotate along the rotating shaft on the connecting platform 906, so that the movable lock head 907 disengages from the fixed lock head 908, and under the rebound action of the reset spring 14, the base 801 is reset. At this time, the base 801 drives the pin 4 to be retracted into the shell 1 through the positioning component 3. At the same time, the base 801 drives the sliding part 601 to slide outward of the shell 1 through the hollow opening 11, so that the pushing component 6 is reset. Therefore, when the user presses the insulating button 5 on the shell 1 and unplugs the adapter from the jack, the pin 4 is retracted into the inside of the shell 1 under the action of the reset spring 14, avoiding the user from getting an electric shock due to the habit of using the fixed pin 4.

[0051] The positioning head 301 of the present invention is provided with an inner cavity 302 to reduce the wear contact area between the positioning component 3 and the pin 4. The contact between the positioning component 3 and the pin 4 by the laminating roller 303 at the end of the positioning head 301 and the pin 4 is avoided.

[0052] When the adapter is inserted into the power outlet, the sliding portion 601 pushes the pin 4 on the base 801 out of the positioning assembly 3, connecting the pin 4 to the power outlet. During this process, the push plate 15 on the base 801 presses the clamping block 304. With the cooperation of the inclined surface on the clamping block 304 and the inclined groove of the inner cavity 302, the clamping block 304 approaches the pin 4, clamping the base of the pin 4. The clamping block 304 strengthens the pin 4 and prevents it from loosening. When the adapter is removed from the outlet, the inclined spring 305 rebounds and drives the clamping block 304 away from the pin 4, preventing the pin 4 from wearing on the clamping block 304 during the extension and retraction process, which may cause the clamping block 304 to lose its fixation on the pin 4.

[0053] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. An anti-electric shock power adapter, characterized by: The invention comprises a shell (1), an end cover (2) is installed at the end of the shell (1), a guide rod (13) is installed on the end cover (2), the guide rod (13) and the connecting component (8) are slidably matched, a positioning component (3) is installed on the end cover (2), a pin (4) is installed on the connecting component (8), the pin (4) and the positioning component (3) are slidably matched, a hollow opening (11) and a USB connector (7) are provided on the shell (1), a circuit board (10) is installed in the shell (1), the USB connector (7) is connected to the circuit board (10), a push-connection component (6) is slidably installed in the hollow opening (11), and the push-connection component (6) pushes the connecting component (8) to move; The connecting assembly (8) includes a base (801), the base (801) is connected to the end cover (2) via a return spring (14), an electrode holder (802) and an electrode member (803) are mounted on the base (801), the electrode holder (802) is connected to the circuit board (10) via the electrode member (803), locking assemblies (9) are mounted on both sides of the base (801), the locking assemblies (9) include insulating blocks (901), insulating blocks (901) are mounted on both sides of the base (801), and a rotatable movable member is mounted on the insulating block (901). A movable lock (907) is installed on the end cover (2), and the fixed lock (908) is engaged with the movable lock (907). A rotating shaft (904) is rotatably installed in the insulating block (901), and a rotating plate (902) is installed on the rotating shaft (904). A push rod (905) and a pressure block (903) are respectively installed at both ends of the rotating plate (902). The push rod (905) is connected to the movable lock (907). An insulating button (5) is installed on the housing (1), and the pressure block (903) is in contact with the insulating button (5). The positioning assembly (3) includes a positioning head (301), an inner cavity (302) is provided in the positioning head (301), a laminating roller (303) is installed at the end of the positioning head (301), and the laminating roller (303) is in contact with the pin (4); A clamping block (304) is installed in an oblique sliding manner in the inner cavity (302), an inclined platform (306) is installed on the inner wall of the end cover (2), and the inclined platform (306) is connected to the clamping block (304) via an inclined spring (305). A push plate (15) is installed on the base (801), and the push plate (15) presses the clamping block (304).

2. The anti-electric shock power adapter according to claim 1, characterized in that: A connecting platform (906) is installed on the insulating block (901), and a movable lock (907) is rotatably installed on the connecting platform (906).

3. The anti-electric shock power adapter according to claim 1, characterized in that: The rotating plate (902) is connected to the inner wall of the insulating block (901) via a compression spring (909).

4. The anti-electric shock power adapter according to claim 1, characterized in that: A guide plate (12) is installed in the housing (1), and the push-connection assembly (6) includes a sliding portion (601), a connecting portion (603) is installed on the sliding portion (601), the connecting portion (603) is connected to the base (801), a stop shoulder (602) is installed on the sliding portion (601), and the guide plate (12) abuts against the stop shoulder (602).

5. The anti-electric shock power adapter according to claim 1, characterized in that: The housing (1) and the end cover (2) are connected by snap fastening, and the end cover (2) can be removed from the housing (1).

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