Safety protection extension socket

Abstract

The utility model discloses a safety protection extension socket, which comprises a bottom shell and an upper shell which are spliced oppositely, at least one plugging base and a copper bar terminal embedded in the plugging base are arranged in the bottom shell, a jack aligned with the copper bar terminal is arranged at the top of the upper shell, and the copper bar terminal is inserted into the jack. The inner side of the upper shell is provided with a protective door assembly which is shielded between the jacks and the copper bar terminals and moves away from the jacks and the copper bar terminals when bearing the pressure of a power plug, and the protective door assembly is detachably connected with the upper shell through a buckle assembly. The ground wire socket is easy to assemble and convenient to overhaul, can be accurately matched with the jack, and has a ground wire jack protection effect.

Description

Technical Field

[0001] The utility model relates to a socket strip, in particular to a safety protection socket strip. Background Art

[0002] Socket strips are commonly used products in life, mainly used for extending and expanding power cords. With the expansion of application fields, many socket strips have the ability to handle high-power applications, so higher requirements are placed on the protection performance of socket strips. In the prior art, a protection door structure is generally provided inside the housing of the socket strip. For example, in the Chinese patent publication document with the publication number CN105680224A and the title "A Five-hole Combined Socket for an Intelligent Socket Strip", it is recorded that: "A five-hole combined socket for an intelligent socket strip includes an upper housing, a lower housing, a first protection door, a second protection door, and a spring. The lower housing is integrally provided on the bottom surface of the upper housing. An installation groove is opened on the top surface of the upper housing. Connection ears are integrally provided at both the front and rear ends of the upper housing. A rectangular through hole is opened between the upper and lower surfaces of the connection ear. A first protrusion and a second protrusion are provided on the left and right side surfaces of the installation groove. A through hole in the front and rear directions is provided in the middle of the bottom surface of the installation groove. A first jack that penetrates up and down is provided on each of the left and right sides of the front part of the guide groove and on the left and right sides of the rear part of the guide groove. A second jack that penetrates up and down is provided on each of the left and right sides of the front part of the guide groove. The first protection door and the second protection door are respectively clamped at the front and rear ends of the guide groove in the installation groove. The spring abuts between the first protection door and the second protection door."; in such products, the protection door is fixed to the lower housing where the copper row terminals are installed. It is difficult to ensure the accurate alignment of the protection door with the jacks on the upper housing after assembly, and the assembly process is complex, which is also not conducive to the inspection and maintenance of the copper row terminals. In addition, the existing such protection doors only cover the zero and live wire terminals and lack the protection effect on the ground wire. If insects, small sundries, water droplets, etc. enter the ground wire jack, it is easy to bring safety risks such as short circuits and electric leakage, so the protection ability is insufficient. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a safety protection socket strip that is easy to assemble, convenient for maintenance, can accurately match the jacks, and has a protection effect on the ground wire jack, aiming at the deficiencies of the prior art.

[0004] To solve the above technical problem, the utility model adopts the following technical solutions.

[0005] A safety protection socket strip includes a bottom shell and an upper shell that are relatively spliced. At least one plug-in base is provided in the bottom shell, and a copper row terminal is embedded in the plug-in base. A jack aligned with the copper row terminal is opened at the top of the upper shell. A protection door assembly is provided inside the upper shell to block between the jack and the copper row terminal and move away from between the jack and the copper row terminal when bearing the pressure of a power plug. The protection door assembly is detachably connected to the upper shell through a buckle assembly.

[0006] Preferably, the protective door assembly includes a first inner shell, two undercuts are provided on each side of the first inner shell, and a fixing plate is formed on the inner side of the upper shell, which respectively abuts against the two sides of the first inner shell, and two slots are formed on the fixing plate, and the two undercuts are respectively clamped in the two slots.

[0007] Preferably, a first two-pin socket and a first three-pin socket are provided on the first inner shell, a first slider and a second slider are provided in the first inner shell, the first slider and the second slider are respectively close to the front and rear ends of the first inner shell and a first spring is sandwiched therebetween, the first slider includes two first inclined portions, the inclined surfaces of the two first inclined portions are both facing the front side of the first inner shell, and the bottoms of the two first inclined portions cover the first two-pin socket, the second slider includes a first zero-live wire inclined portion and a first ground wire inclined portion, the inclined surfaces of the first zero-live wire inclined portion and the first ground wire inclined portion are both facing the rear side of the first inner shell, the bottoms of the first zero-live wire inclined portion cover the zero and live wire holes of the first three-pin socket, the bottom of the first ground wire inclined portion covers the ground wire hole of the first three-pin socket, and a first through hole is formed at the rear end of the first ground wire inclined portion.

[0008] Preferably, a rearwardly extending avoidance opening is provided in the middle of the first slider, the second slider includes a forwardly extending slider arm, the slider arm is arranged in the avoidance opening and the two are slidably matched, and the first ground wire inclined portion and the first through hole are both arranged on the slider arm.

[0009] Preferably, an inverted wedge-shaped portion is formed at the bottom of the front end of the slider support arm, and a positive wedge-shaped portion is formed at the bottom of the front end of the avoidance opening, and the positive wedge-shaped portion and the inverted wedge-shaped portion are aligned front and back.

[0010] Preferably, a first inverted step is formed at the bottom of the rear end of the first slider, and a second inverted step is formed at the bottom of the front end of the second slider. The first inverted step is aligned front to back with the second inverted step, and the first spring is clamped between the first inverted step and the second inverted step.

[0011] Preferably, the protective door assembly includes a second inner shell, a second three-pin socket is opened on the second inner shell, a third slider is provided in the second inner shell, a second spring is sandwiched between the third slider and the front wall of the second inner shell, the third slider includes a second neutral and live wire inclined portion and a second ground wire inclined portion, the inclined surfaces of the second neutral and live wire inclined portion and the second ground wire inclined portion are both facing the rear side of the second inner shell, the bottom of the second neutral and live wire inclined portion covers the neutral and live wire holes of the second three-pin socket, the bottom of the second ground wire inclined portion covers the ground wire hole of the second three-pin socket, and a second through hole is formed at the rear end of the second ground wire inclined portion.

[0012] Preferably, a strip groove extending in the front-rear direction is formed in the third slider, and the second ground wire inclined portion and the second through hole are both arranged in the strip groove.

[0013] Preferably, the protective door assembly includes a third inner shell, a third three-pin jack is formed in the third inner shell, a fourth slider and a fifth slider that can both slide left and right are arranged in the third inner shell, the fifth slider is located in front of the fourth slider, a third spring is clamped between the fourth slider and the left wall of the third inner shell, a fourth spring is clamped between the fifth slider and the left wall of the third inner shell, the fourth slider includes a third zero-fire wire inclined portion, the bottom of the third zero-fire wire inclined portion covers the zero and fire wire holes of the third three-pin jack, the fifth slider includes a third ground wire inclined portion, the bottom of the third ground wire inclined portion covers the ground wire hole of the third three-pin jack, the inclined surfaces of the third zero-fire wire inclined portion and the third ground wire inclined portion both face the right side of the third inner shell, a third through hole is arranged at the right end of the third zero-fire wire inclined portion, and a fourth through hole is arranged at the right end of the third ground wire inclined portion.

[0014] Preferably, two transverse accommodation grooves extending in the left-right direction are formed in the third inner shell, the two transverse accommodation grooves are separated by a partition, and the fourth slider and the fifth slider are respectively arranged in the two transverse accommodation grooves.

[0015] In the safety protection socket disclosed by the present utility model, a protective door assembly is arranged in the shell formed by the relative splicing of the bottom shell and the upper shell. The protective door assembly is used to cover the copper row terminals, and when a power plug is inserted into the jack of the upper shell, the thrust applied by the power plug is used to drive the protective door assembly to open, and then the power plug is inserted into the copper row terminals. Among them, the present utility model preferably arranges the protective door assembly on the upper shell and makes the two detachably connected through a buckle assembly, which is not only easier to assemble, but also convenient for overhauling internal structures such as copper row terminals. In addition, because the protective door assembly is directly fixed to the upper shell, it can ensure that the through holes of the protective door assembly are accurately matched with the jacks of the upper shell, avoid the difficulty of inserting the power plug due to the misalignment of the two, and thus improve the product quality of the socket. Description of the Drawings

[0016] Figure 1 is the internal structure diagram of the safety protection socket of the present utility model;

[0017] Figure 2 is the structure diagram after the upper shell and the protective door assembly are assembled;

[0018] Figure 3 is the exploded view of the protective door assembly in the first embodiment of the present utility model;

[0019] Figure 4 This is a state comparison diagram of the protective door assembly in the first embodiment of the present utility model;

[0020] Figure 5 This is an exploded view of the protective door assembly in the second embodiment of the present utility model;

[0021] Figure 6 This is a state comparison diagram of the protective door assembly in the second embodiment of the present utility model;

[0022] Figure 7 This is a perspective view of the protective door assembly in the third embodiment of the present utility model;

[0023] Figure 8 This is a state comparison diagram of the protective door assembly in the third embodiment of the present utility model;

[0024] Figure 9 This is an exploded view of the overload protection device;

[0025] Figure 10 This is an internal structure diagram after the flip cover is opened;

[0026] Figure 11 This is a perspective view of the socket strip. Specific embodiments

[0027] The present utility model will be described in more detail below with reference to the accompanying drawings and embodiments.

[0028] The present utility model discloses a safety protection socket strip, as shown in combination with Figures 1 to 3 shown, which includes a bottom shell 1 and an upper shell 2 that are relatively joined together. At least one socket base 3 is provided inside the bottom shell 1, and a copper row terminal 4 is embedded in the socket base 3. A socket hole 20 that is aligned with the copper row terminal 4 is opened at the top of the upper shell 2. A protective door assembly 5 that shields between the socket hole 20 and the copper row terminal 4 and moves away from between the socket hole 20 and the copper row terminal 4 when bearing the pressure of a power plug is provided inside the upper shell 2. The protective door assembly 5 is detachably connected to the upper shell 2 through a snap component.

[0029] In the above structure, a protective door assembly 5 is arranged in the shell formed by relatively splicing the bottom shell 1 and the upper shell 2. The protective door assembly 5 is used to cover the copper bus terminal 4, and when a power plug is inserted into the jack of the upper shell 2, the thrust applied by the power plug is used to drive the protective door assembly 5 to open, and then the power plug is plugged into the copper bus terminal 4. Among them, the utility model preferably arranges the protective door assembly 5 on the upper shell 2, and makes the two detachably connected by a snap assembly, which is not only easier to assemble, but also convenient for maintenance of internal structures such as the copper bus terminal. In addition, because the protective door assembly 5 is directly fixed to the upper shell 2, it can ensure that the through hole of the protective door assembly 5 is accurately matched with the jack of the upper shell 2, avoiding the difficulty in inserting the power plug due to the misalignment of the two, thereby improving the product quality of the power strip.

[0030] Regarding the preferred structure of the protective door assembly 5, please refer to the following embodiment.

[0031] Embodiment 1

[0032] Combination Figure 3 and Figure 4 As shown, in this embodiment, the protective door assembly 5 includes a first inner shell 50, two undercuts 500 are respectively provided on both sides of the first inner shell 50, and a clamping plate 21 is formed on the inner side of the upper shell 2 to respectively abut against both sides of the first inner shell 50, and two bayonet holes 22 are provided on the clamping plate 21, and the two undercuts 500 are respectively clamped in the two bayonet holes 22. Among them, the two clamping plates 21 can play a good role in limiting, covering and fixing the first inner shell 50, and based on the matching relationship between the two undercuts 500 and the two bayonet holes 22, the first inner shell 50 can be conveniently disassembled and assembled, thereby playing a role in reliable fixing and easy assembly and disassembly.

[0033] As a preferred structure, a first two-pin socket hole 501 and a first three-pin socket hole 502 are formed on the first inner shell 50. A first slider 503 and a second slider 504 are arranged inside the first inner shell 50. The first slider 503 and the second slider 504 are respectively close to the front and rear ends of the first inner shell 50, and a first spring is clamped between the two. The first slider 503 includes two first inclined portions 505. The inclined surfaces of the two first inclined portions 505 face the front side of the first inner shell 50. The bottoms of the two first inclined portions 505 cover the first two-pin socket hole 501. The second slider 504 includes a first neutral and live wire inclined portion 507 and a first ground wire inclined portion 508. The inclined surfaces of the first neutral and live wire inclined portion 507 and the first ground wire inclined portion 508 face the rear side of the first inner shell 50. The bottoms of the first neutral and live wire inclined portion 507 cover the neutral and live wire holes of the first three-pin socket hole 502. The bottom of the first ground wire inclined portion 508 covers the ground wire hole of the first three-pin socket hole 502. A first through hole 509 is formed at the rear end of the first ground wire inclined portion 508.

[0034] In the above structure, the protective door assembly 5 is preferably a five-hole protective door. When a double-headed power plug is inserted into the two-hole of the upper shell 2, the double-headed power plug presses on the two first inclined portions 505, and at the same time overcomes the elastic force of the first spring. The first slider 503 slides backward to expose the two first two-pin socket holes 501 until the double-headed power plug passes through the two first two-pin socket holes 501 and is plugged into the corresponding copper row terminals.

[0035] Similarly, when a three-headed power plug is inserted into the three-hole of the upper shell 2, the neutral and live plugs respectively abut against the first neutral and live wire inclined portion 507. At the same time, the ground wire plug abuts against the first ground wire inclined portion 508, thereby driving the second slider 504 to slide forward until the neutral, live, and ground wire plugs respectively pass through the neutral, live, and ground wire holes of the first three-pin socket hole 502 and are then plugged into the corresponding copper row terminals. Based on the above structure, it can be seen that the second slider 504 in the present utility model can simultaneously cover the neutral, live, and ground wire holes of the first three-pin socket hole 502, thereby simultaneously covering and protecting the neutral, live, and ground copper row terminals, greatly improving the safety and reliability of the socket strip product.

[0036] In this embodiment, to enable the first slider 503 and the second slider 504 to move straight forward and backward, there is a sliding limit function between the first slider 503 and the second slider 504. Specifically, an avoidance opening 506 extending backward is formed in the middle of the first slider 503. The second slider 504 includes a slider support arm 510 extending forward. The slider support arm 510 is disposed in the avoidance opening 506 and the two are in sliding fit. The first ground wire inclined portion 508 and the first through hole 509 are both disposed on the slider support arm 510. Among them, based on the sliding fit relationship between the slider support arm 510 and the avoidance opening 506, the first slider 503 and the second slider 504 can be slidably fitted with each other, and there is no need to set other slide rails and limit structures, and the matching performance is better.

[0037] Further, an inverted wedge portion 511 is formed at the bottom of the front end of the slider support arm 510, and a positive wedge portion 512 is formed at the bottom of the front end of the avoidance opening 506. The positive wedge portion 512 and the inverted wedge portion 511 are arranged in alignment front and back. Among them, when the slider support arm 510 slides forward, the positive wedge portion 512 and the inverted wedge portion 511 can be attached to each other, which can not only limit the sliding stroke, but also avoid a large impact between the slider support arm 510 and the end of the avoidance opening 506, thereby ensuring the reliability of the protective door assembly 5.

[0038] In order to better install and limit the first spring, in this embodiment, a first inverted step opening 513 is formed at the bottom of the rear end of the first slider 503, and a second inverted step opening 514 is formed at the bottom of the front end of the second slider 504. The first inverted step opening 513 and the second inverted step opening 514 are aligned front and back, and the first spring is clamped between the first inverted step opening 513 and the second inverted step opening 514.

[0039] Embodiment Two

[0040] Combined with Figure 5 and Figure 6 As shown, in this embodiment, the protective door assembly 5 includes a second inner shell 51. A second three-pin jack 519 is formed on the second inner shell 51. A third slider 518 is disposed in the second inner shell 51. A second spring is clamped between the third slider 518 and the front wall of the second inner shell 51. The third slider 518 includes a second zero-fire wire inclined portion 517 and a second ground wire inclined portion 516. The inclined surfaces of the second zero-fire wire inclined portion 517 and the second ground wire inclined portion 516 both face the rear side of the second inner shell 51. The bottom of the second zero-fire wire inclined portion 517 covers the zero and fire wire holes of the second three-pin jack 519. The bottom of the second ground wire inclined portion 516 covers the ground wire hole of the second three-pin jack 519. A second through hole is formed at the rear end of the second ground wire inclined portion 516.

[0041] Among them, since the inclined surfaces of the two second zero-fire wire inclined parts 517 and the second ground wire inclined part 516 both face the rear side of the second inner shell 51, when the three-pin power plug is inserted into the three holes of the upper shell 2, the zero, fire, and ground wire plugs simultaneously abut against the two second zero-fire wire inclined parts 517 and the second ground wire inclined part 516, thereby driving the third slider 518 to slide forward until the zero, fire, and ground wire plugs respectively pass through the zero, fire, and ground wire holes of the second three-pin jack 519, and then are inserted into the corresponding copper bar terminals. Based on the above structure, it can be seen that the third slider 518 in the present utility model can simultaneously cover the zero, fire, and ground wire holes of the second three-pin jack 519, thereby simultaneously covering and protecting the zero, fire, and ground copper bar terminals, greatly improving the safety and reliability of the socket product.

[0042] As a preferred structure, a strip groove 515 extending in the front-rear direction is formed on the third slider 518, and the second ground wire inclined part 516 and the second through hole are both arranged in the strip groove 515. The above structure enables the third slider 518 to simultaneously have two second zero-fire wire inclined parts 517 and a second ground wire inclined part 516, with a simplified structure and being easy to integrally injection mold.

[0043] Embodiment 3

[0044] Combined with Figure 7 and Figure 8 As shown, in this embodiment, the protection door assembly 5 includes a third inner shell 52. A third three-pin jack is formed on the third inner shell 52. A fourth slider 520 and a fifth slider 521 that can both slide left and right are arranged inside the third inner shell 52. The fifth slider 521 is located in front of the fourth slider 520. A third spring 522 is clamped between the fourth slider 520 and the left wall of the third inner shell 52. A fourth spring 523 is clamped between the fifth slider 521 and the left wall of the third inner shell 52. The fourth slider 520 includes a third zero-fire wire inclined part 524, and the bottom of the third zero-fire wire inclined part 524 covers the zero and fire wire holes of the third three-pin jack. The fifth slider 521 includes a third ground wire inclined part 525, and the bottom of the third ground wire inclined part 525 covers the ground wire hole of the third three-pin jack. The inclined surfaces of the third zero-fire wire inclined part 524 and the third ground wire inclined part 525 both face the right side of the third inner shell 52. A third through hole 526 is provided at the right end of the third zero-fire wire inclined part 524, and a fourth through hole 527 is provided at the right end of the third ground wire inclined part 525.

[0045] In the above structure, it is preferred to use the two components of the fourth slider 520 and the fifth slider 521 to protect the zero and live wire holes and the ground wire hole respectively. When the three-pin power plug is inserted into the three holes of the upper shell 2, the zero and live plugs respectively abut against the two third zero and live wire inclined parts 524. At the same time, the ground wire plug abuts against the third ground wire inclined part 525. By the pressure exerted by the three-pin power plug, the fourth slider 520 and the fifth slider 521 are driven to move synchronously to the left until the three-pin power plug passes through the hole positions of the third inner shell 52 and is connected to the corresponding copper row terminals. In this embodiment, the three-hole protection function is realized by using two sliders, which has the performance of small insertion resistance and smooth translation of the sliders.

[0046] As a preferred method, in order to better slide-match with the fourth slider 520 and the fifth slider 521, in this embodiment, two horizontally extending horizontal receiving grooves 528 are formed on the third inner shell 52. The two horizontal receiving grooves 528 are separated by a partition part 529, and the fourth slider 520 and the fifth slider 521 are respectively arranged in the two horizontal receiving grooves 528.

[0047] In practical applications, the present utility model can use any one or two of the protection door assemblies 5 in the above-mentioned Embodiment 1 to Embodiment 3. Of course, the protection door assemblies 5 in the above three embodiments can also be used at the same time, that is, the upper shell 2 of the present utility model includes three groups of jacks 20, and the three groups of jacks 20 respectively correspond to three groups of protection door assemblies 5, and the three groups of protection door assemblies 5 are the structures in Embodiment 1, Embodiment 2, and Embodiment 3 respectively.

[0048] Combined Figures 9 to 11 As shown, in order to improve the surge protection ability and achieve overload disconnection, the present utility model includes a bottom shell 1. A copper row 6 and an overload protection board 7 are arranged in the bottom shell 1. Three L-shaped ends 60 are formed at the end of the copper row 6. Three connection holes 70 are formed at the edge of the overload protection board 7. The L-shaped ends 60 correspond to the connection holes 70 one by one. The L-shaped ends 60 pass through the connection holes 70 and are welded to each other. The overload protection board 7 is electrically connected to a power cord 9. An overload switch 8 is arranged on the overload protection board 7, and the overload switch 8 is connected in series between the live wire of the power cord 9 and the live wire of the copper row 6.

[0049] The above structure is applied to a socket strip product. An overload switch 8 is provided on the overload protection board 7. By wiring on the overload protection board 7, the overload switch 8 can be connected in series between the live wire of the power cord 9 and the live wire of the copper busbar 6. When there is a large surge in the power circuit or lightning strikes, overload and other situations occur, the overload switch 8 can automatically trip. At the same time, in the present utility model, three L-shaped ends 60 are provided at the end of the copper busbar 6. The three L-shaped ends 60 respectively pass through three connection holes 70 and are fixed by welding. The connection between the copper busbar 6 and the overload protection board 7 does not rely on wires, and the power cord 9 is connected to the side of the overload switch 8 away from the copper busbar 6. When the load is too large or lightning is introduced from the load side, etc., the overload switch 8 can trip in time, and at this time, it can avoid situations such as melting at the connection between the power cord 9 and the overload protection board 7. Based on the above principle, it can be seen that the present utility model not only has strong surge protection ability, but also has an overload disconnection function. In addition, the present utility model can make the internal connection relationship of the socket strip reliable and is easy to weld and assemble, which better meets the application requirements.

[0050] Please refer to Figure 9 and Figure 10 , in this embodiment, a flip cover 10 is hingedly connected to the edge of the bottom case 1, and the flip cover 10 covers the bottoms of the overload protection board 7 and the power cord 9. Among them, the function of the flip cover 10 is to facilitate the maintenance of the devices on the rear side of the socket strip.

[0051] Specifically, three welding holes 71 are provided on the edge of the overload protection board 7 away from the connection holes 70, and the three wire cores of the power cord 9 are respectively welded to the three welding holes 71. Among them, there are three welding holes 71 at the connection between the power cord 9 and the overload protection board 7, and the three welding holes 71 are all located inside the flip cover 10. When the connection between the two is melted, there is no need to disassemble the entire socket strip, and only need to open the flip cover 10 to re-weld, which is beneficial to the maintenance work.

[0052] In order to facilitate the identification of the wire names of the three welding holes 71, in this embodiment, zero, live, and ground wire marks 11 are provided on the edge of the bottom case 1, and the zero, live, and ground wire marks 11 are aligned with the three welding holes 71.

[0053] As a preferred method, two LED indicators 72 are provided on the overload protection board 7, and the two LED indicators 72 are respectively used to emit red light and blue light. Among them, the red light and the blue light are respectively used to indicate different states, which is beneficial for people to view the working state of the socket strip.

[0054] Further, this embodiment includes a light guide plate 73, and the light guide plate 73 covers the tops of two LED indicators 72. Two conical light guide columns 74 are formed on the light guide plate 73, and the two conical light guide columns 74 are vertically aligned with the two LED indicators 72 respectively.

[0055] Among them, after the light beams emitted by the two LED indicators 72 pass through the light guide plate 73, they are respectively conducted by the two conical light guide columns 74. The bottom ends of the conical light guide columns 74 can preferably collect the light beams and converge at the top ends of the conical light guide columns 74, so that the light intensity is greater and the optical signal is clearer.

[0056] Further, as shown in Figures 9 to 11 this embodiment includes an upper case 2, the upper case 2 is fixedly assembled with the lower case 1 up and down, and the overload switch 8 and the two conical light guide columns 74 respectively pass through the upper case 2.

[0057] The above are only the preferred embodiments of the present invention, and are not used to limit the present invention. Any modifications, equivalent replacements or improvements made within the technical scope of the present invention shall be included within the scope protected by the present invention.

Claims

1. A safety protection socket strip, characterized in that, The invention comprises a bottom shell (1) and an upper shell (2) which are relatively assembled, wherein at least one plug-in base (3) and a copper bus terminal (4) embedded in the plug-in base (3) are arranged in the bottom shell (1), a plug hole (20) which is arranged in alignment with the copper bus terminal (4) is provided on the top of the upper shell (2), a protective door assembly (5) which is shielded between the plug hole (20) and the copper bus terminal (4) and is moved away from between the plug hole (20) and the copper bus terminal (4) when subjected to pressure from a power plug is provided on the inner side of the upper shell (2), and the protective door assembly (5) is detachably connected to the upper shell (2) via a snap assembly.

2. The safety protection socket strip according to claim 1, characterized in that, The protective door assembly (5) comprises a first inner shell (50), two undercuts (500) are respectively arranged on two sides of the first inner shell (50), a fixing plate (21) is formed on the inner side of the upper shell (2) and respectively abuts against the two sides of the first inner shell (50), and two fixing holes (22) are formed on the fixing plate (21), and the two undercuts (500) are respectively fixed in the two fixing holes (22).

3. The safety protection socket strip according to claim 2, wherein The first inner shell (50) is provided with a first two-pin socket (501) and a first three-pin socket (502), and the first inner shell (50) is provided with a first slider (503) and a second slider (504), the first slider (503) and the second slider (504) are respectively close to the front and rear ends of the first inner shell (50) and a first spring is sandwiched between the two sliders, the first slider (503) includes two first inclined portions (505), the inclined surfaces of the two first inclined portions (505) are both facing the front side of the first inner shell (50), and the bottoms of the two first inclined portions (505) cover the first two-pin socket (501). The socket (501) comprises a first neutral-live wire inclined portion (507) and a first ground wire inclined portion (508), the inclined surfaces of the first neutral-live wire inclined portion (507) and the first ground wire inclined portion (508) are both oriented toward the rear side of the first inner shell (50), the bottom of the first neutral-live wire inclined portion (507) covers the neutral and live wire holes of the first three-pin socket (502), the bottom of the first ground wire inclined portion (508) covers the ground wire hole of the first three-pin socket (502), and the rear end of the first ground wire inclined portion (508) is formed with a first through hole (509).

4. The safety protection socket strip according to claim 3, wherein A rearwardly extending avoidance opening (506) is provided in the middle of the first slider (503); the second slider (504) includes a slider support arm (510) extending forward; the slider support arm (510) is arranged in the avoidance opening (506) and the two are slidably matched; the first ground wire inclined portion (508) and the first through hole (509) are both arranged on the slider support arm (510).

5. The safety protection socket strip according to claim 4, wherein, The front bottom of the slider support arm (510) is formed with an inverted wedge-shaped portion (511), and the front bottom of the avoidance opening (506) is formed with a positive wedge-shaped portion (512), and the positive wedge-shaped portion (512) and the inverted wedge-shaped portion (511) are arranged in front and back alignment.

6. The safety protection socket strip according to claim 3, wherein A first inverted step opening (513) is formed at the bottom of the rear end of the first slider (503), and a second inverted step opening (514) is formed at the bottom of the front end of the second slider (504). The first inverted step opening (513) and the second inverted step opening (514) are aligned front and back, and the first spring is clamped between the first inverted step opening (513) and the second inverted step opening (514).

7. The safety protection socket strip according to claim 1, wherein, The protective door assembly (5) includes a second inner shell (51). A second three-pin socket (519) is formed on the second inner shell (51). A third slider (518) is provided inside the second inner shell (51). A second spring is clamped between the third slider (518) and the front wall of the second inner shell (51). The third slider (518) includes a second zero-fire wire inclined portion (517) and a second ground wire inclined portion (516). The inclined surfaces of the second zero-fire wire inclined portion (517) and the second ground wire inclined portion (516) both face the rear side of the second inner shell (51). The bottom of the second zero-fire wire inclined portion (517) covers the zero and fire wire holes of the second three-pin socket (519). The bottom of the second ground wire inclined portion (516) covers the ground wire hole of the second three-pin socket (519). A second through hole is formed at the rear end of the second ground wire inclined portion (516).

8. The safety protection socket strip according to claim 7, wherein, A strip groove (515) extending in the front-back direction is formed on the third slider (518). The second ground wire inclined portion (516) and the second through hole are both provided in the strip groove (515).

9. The safety protection socket strip according to claim 1, wherein The protective door assembly (5) includes a third inner shell (52). A third three-pin socket is formed on the third inner shell (52). A fourth slider (520) and a fifth slider (521) that can both slide left and right are provided inside the third inner shell (52). The fifth slider (521) is located in front of the fourth slider (520). A third spring (522) is clamped between the fourth slider (520) and the left wall of the third inner shell (52). A fourth spring (523) is clamped between the fifth slider (521) and the left wall of the third inner shell (52). The fourth slider (520) includes a third zero-fire wire inclined portion (524). The bottom of the third zero-fire wire inclined portion (524) covers the zero and fire wire holes of the third three-pin socket. The fifth slider (521) includes a third ground wire inclined portion (525). The bottom of the third ground wire inclined portion (525) covers the ground wire hole of the third three-pin socket. The inclined surfaces of the third zero-fire wire inclined portion (524) and the third ground wire inclined portion (525) both face the right side of the third inner shell (52). A third through hole (526) is provided at the right end of the third zero-fire wire inclined portion (524). A fourth through hole (527) is provided at the right end of the third ground wire inclined portion (525).

10. The safety protection socket strip according to claim 9, wherein Two lateral receiving grooves (528) extending in the left-right direction are formed in the third inner shell (52). The two lateral receiving grooves (528) are separated by a partition portion (529). The fourth slider (520) and the fifth slider (521) are respectively disposed in the two lateral receiving grooves (528).

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