Anti-electric shock power adapter

Abstract

The invention belongs to the technical field of power adapters, and particularly relates to an anti-electric shock power adapter. The plug comprises a shell, an end cover, a guide rod, a connecting assembly, a positioning assembly, a pin and a push-connection assembly. The connecting assembly comprises a base, an electrode holder and an electrode piece, lock catch assemblies are installed on the two sides of the base, each lock catch assembly comprises an insulating block, a rotatable movable lock head and a fixed lock head, a rotating shaft is rotationally installed in the insulating block, a rotating plate is installed on the rotating shaft, a push rod and a pressing block are installed at the two ends of the rotating plate respectively, and an insulating key is installed on the shell. According to the use habit of a user using a fixed pin, the user can press the insulating key on the shell and pull the adapter out of the jack, the insulating key can drive the pressing block to move, the movable lock head is disengaged from the fixed lock head, and under the rebounding effect of the reset spring, the base drives the pin to be retracted into the shell through the positioning assembly, so that the user can pull out the adapter from the jack. And the user is prevented from getting an electric shock due to the use habit of using a fixed pin.

Description

Technical Field

[0001] The 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 the pins on the power adapter are inserted into or pulled out of the socket of the power socket, especially when children use it, they may get an electric shock accident due to their fingers touching the pins. The prior art solves the above problem by using telescopic pins, such as the invention patent with publication number CN114552266A, but this solution has the following problems when used; 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 piece 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 habits of the fixed pin. During this process, the user's fingers can easily come into contact with the pin, causing electric shock.

[0004] Second, during the use of the power adapter, the pins need to be frequently extended and retracted. At this time, the sliding connection between the pins and the charger body is prone to wear, causing the pins to loosen. The loose pins may generate an arc when contacting the socket, posing a safety hazard. Summary of the invention

[0005] The purpose of the present invention is to provide an anti-electric shock power adapter to solve the technical problems in the prior art.

[0006] The purpose 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 is slidably matched with a connecting assembly, a positioning assembly is installed on the end cover, a pin is installed on the connecting assembly, the pin is slidably matched 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, an insulating block is installed on both sides of the base, a rotatable active lock is installed on the insulating block, a fixed lock is installed on the end cover, the fixed lock is engaged with the active 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 active lock, an insulating button is installed on the shell, and the active lock fits the insulating button.

[0007] As a further optimization or improvement of the present solution, a connecting platform is installed on the insulating block, and a movable lock is rotatably installed on the connecting platform.

[0008] 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.

[0009] 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 stop shoulder is installed on the sliding part, and the guide plate abuts against the stop shoulder.

[0010] As a further optimization or improvement of the present solution, the positioning assembly includes a positioning head, an inner cavity is provided in the positioning head, a laminating roller is installed at the end of the positioning head, and the laminating roller is in contact with the pin.

[0011] 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 via an inclined spring, and a push plate is installed on the base to press the clamping block.

[0012] As a further optimization or improvement of the present solution, the shell and the end cover are snap-connected, and the end cover can be removed from the shell.

[0013] Beneficial effects of the present invention: (1) When the user unplugs the power adapter, according to the user's habit of using fixed plugs, 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 rebound 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 electric shock caused by the user's habit of using fixed plugs.

[0014] (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 plug pin, and the wear of the positioning component and the plug pin is avoided by the contact between the laminating roller at the end of the positioning head and the plug pin; Specifically, when the adapter is inserted into the power socket, the sliding part pushes the pin on the base out of the positioning assembly, so that the pin is connected to the power socket. During this process, the push plate on the base presses the clamping block. Under the cooperation of the inclined surface on the clamping block and the inclined groove in the inner cavity, the clamping block approaches the pin, so that the clamping block clamps the root of the pin, and the clamping block reinforces the pin to prevent the pin from loosening. When the adapter is pulled out of the socket, the inclined spring rebounds and drives the clamping block away from the pin, so as to prevent the pin from wearing the clamping block during the extension and retraction process, resulting in failure of the clamping block to fix the pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the front side of the present invention.

[0017] Figure 2 It is a schematic diagram of the overall structure of the back side of the present invention.

[0018] Figure 3 Schematic diagram of the internal structure of the shell.

[0019] Figure 4 This is a schematic diagram of the circuit board structure.

[0020] Figure 5 It is a top view of the internal structure of the shell.

[0021] Figure 6 This is a diagram of the coordination between the push-to-connect component and the connecting component.

[0022] Figure 7 This is a diagram of the connection component and the locking component.

[0023] Figure 8 for Figure 7 A magnified view of the structure of part A.

[0024] Fig. 9 for Figure 7 Enlarged view of the structure of part B.

[0025] Fig.10 It is an exploded view of the overall structure of the back side of the present invention.

[0026] Fig.11 It is an exploded view of the overall structure of the front side of the present invention.

[0027] 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-connection assembly; 601. Sliding part; 602. Shoulder; 603. Connecting part; 7. USB connector; 8. Connecting assembly; 801. Base; 802. Electrode holder; 803. Electrode member; 9. Locking assembly; 901. Insulating block; 902. Turntable; 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

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 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 through 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, and the locking assembly 9 is installed on both sides of the base 801. The locking assembly 9 includes an insulating block 901, and insulating blocks 901 are installed on both sides of the base 801. A rotatable movable lock 907 is installed on the insulating block 901, and 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, 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, and 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.

[0030] 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 .

[0031] Specifically, the rotating plate 902 is connected to the inner wall of the insulating block 901 via a compression spring 909 .

[0032] It should be noted that the circuit board 10 is connected to the USB connector 7 and the connection component 8 respectively. This connection method is a prior art and is not described in detail in this application. It does not affect the integrity of this solution. By pushing the push-connection component 6, the pin 4 is extended from the inside of the housing 1. At this time, the position of the pin 4 is fixed by the fixed lock 908 and the movable lock 907, and the pressing block 903 is attached to the back of the insulating button 5; by pressing the insulating button 5, the pin 4 is automatically retracted. As the pin 4 is retracted, the push-connection component 6 is reset, and the pressing block 903 is away from the insulating button 5.

[0033] 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 habits of the fixed pin 4. At this time, the user's fingers can easily come into contact with the pin 4, causing electric shock.

[0034] Based on the user's usage habits; when the present invention is used, 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 out 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 reset spring 14 is compressed, the movable lock 907 is engaged with the fixed lock 908, the pressing block 903 is in contact with 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; When the user unplugs the power adapter, according to the user's habit of using the fixed pin 4, the user will press the insulating button 5 on the housing 1 and unplug the adapter from the socket. When the user presses the insulating button 5, the insulating button 5 will drive the pressing block 903 to move. Fig. 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 907 to rotate along the rotating shaft on the connecting platform 906, so that the movable lock 907 is disengaged from the fixed lock 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 recovered into the shell 1 through the positioning component 3. At the same time, the base 801 drives the sliding part 601 to slide out 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 recovered to 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.

[0035] It should be noted that an arc extinguishing sheet is installed on the base 801 to prevent arcing during the process of the reset spring 14 driving the pin 4 to be retracted into the housing 1. The insulating button 5 can be made of eye-catching red insulating rubber. Similarly, the insulating button 5 can be set on the other two sides of the housing 1 or on the four sides of the housing 1. The insulating buttons 5 can be linked by elastic parts to improve the convenience of use.

[0036] See also Figure 3 and Figure 6 A guide plate 12 is installed in the shell 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.

[0037] 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 to prevent the sliding part 601 from detaching from the inside of the shell 1.

[0038] See also Figure 6-Figure 8 The positioning assembly 3 includes a positioning head 301 , an inner cavity 302 is formed 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 .

[0039] Specifically, the clamping block 304 is installed in the inner cavity 302 for oblique sliding, 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 the inclined spring 305, and the push plate 15 is installed on the base 801, and the push plate 15 presses the clamping block 304.

[0040] It should be noted that during the use of the power adapter, the pin 4 needs to be frequently extended and retracted, and at this time, the pin 4 is easily worn against the positioning component 3, causing the pin 4 to become loose. 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, and the positioning component 3 and the pin 4 are prevented from being worn by the contact between the laminating roller 303 at the end of the positioning head 301 and the pin 4; When the adapter is inserted into the power socket, the sliding part 601 pushes the pin 4 on the base 801 out of the positioning assembly 3, so that the pin 4 is connected to the power socket. In this process, the push plate 15 on the base 801 presses the clamping block 304. Under 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, so that the clamping block 304 clamps the root of the pin 4, and the clamping block 304 reinforces the pin 4 to prevent the pin 4 from loosening. When the adapter is pulled out from the socket of the present invention, the inclined spring 305 rebounds and drives the clamping block 304 away from the pin 4, so as to prevent the pin 4 from being worn on the clamping block 304 during the extension and retraction process, resulting in the failure of the clamping block 304 to fix the pin 4.

[0041] See also Figure 1-Figure 3 The shell 1 and the end cover 2 are snap-connected, and the end cover 2 can be removed from the shell 1.

[0042] 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 maintenance of the adapter.

[0043] The working principle of the present invention is based on the user's habit of using the fixed pin 4; when the present invention is used, the positioning component 3 is first inserted into the power socket, and then the push-connection component 6 is pushed. 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 out from the positioning component 3, so that the pin 4 is connected to the power socket. In this process, the base 801 gradually approaches the end cover 2, the reset spring 14 is compressed, the movable lock head 907 is engaged with the fixed lock head 908, and the pressing 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; When the user unplugs the power adapter, according to the user's habit of using the fixed pin 4, the user will press the insulating button 5 on the housing 1 and unplug the adapter from the socket. When the user presses the insulating button 5, the insulating button 5 will drive the pressing block 903 to move. Fig. 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 907 to rotate along the rotating shaft on the connecting platform 906, so that the movable lock 907 is disengaged from the fixed lock 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 recovered into the shell 1 through the positioning component 3. At the same time, the base 801 drives the sliding part 601 to slide out 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 recovered to 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.

[0044] 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 positioning component 3 and the pin 4 are prevented from being worn by the contact roller 303 at the end of the positioning head 301 and the pin 4. When the adapter is inserted into the power socket, the sliding part 601 pushes the pin 4 on the base 801 out of the positioning assembly 3, so that the pin 4 is connected to the power socket. In this process, the push plate 15 on the base 801 presses the clamping block 304. Under 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, so that the clamping block 304 clamps the root of the pin 4, and the clamping block 304 reinforces the pin 4 to prevent the pin 4 from loosening. When the adapter is pulled out of the socket, the inclined spring 305 rebounds and drives the clamping block 304 away from the pin 4, so as to prevent the pin 4 from being worn on the clamping block 304 during the extension and retraction process, resulting in the failure of the clamping block 304 to fix the pin 4.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An anti-electric shock power adapter, characterized in that: 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 plug pin (4) is installed on the connecting component (8), the plug pin (4) and the positioning component (3) are slidably matched, 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 assembly (8) comprises a base (801), the base (801) is connected to the end cover (2) via a return spring (14), an electrode seat (802) and an electrode member (803) are mounted on the base (801), the base (801) 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) comprise insulating blocks (901), insulating blocks (901) are mounted on both sides of the base (801), and a rotatable movable The end cover (2) is provided with a fixed lock (908), 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 pressing block (903) are respectively installed at both ends of the rotating plate (902), the push rod (905) is connected with the movable lock (907), an insulating button (5) is installed on the housing (1), and the movable lock (907) is in contact with the insulating button (5).

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), the push-connection assembly (6) comprises a sliding portion (601), a connecting portion (603) is installed on the sliding portion (601), the connecting portion (603) is connected to a 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 positioning assembly (3) comprises 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).

6. The anti-electric shock power adapter according to claim 5, characterized in that: 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), the inclined platform (306) is connected to the clamping block (304) via an inclined spring (305), and a push plate (15) is installed on the base (801), and the push plate (15) presses the clamping block (304).

7. 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-fit, and the end cover (2) can be removed from the housing (1).

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