Electrical socket device with lock catch protection door

Abstract

The invention discloses an electrical socket device with a lock catch protective door, which comprises a cover plate, a socket assembly and a protective door assembly, the socket assembly comprises at least one socket, the socket comprises a left plug bush and a right plug bush, the cover plate is provided with jacks corresponding to the socket, the jacks comprise a left jack and a right jack, and the left jack and the right jack are connected with the protective door assembly. The protection door assembly comprises a first protection door, a second protection door and a protection door spring which are sequentially arranged in the direction of the left socket and the right socket, the first protection door comprises a first partition plate, the second protection door comprises a second partition plate, and a first self-locking protruding block is further arranged on the first partition plate. The second partition plate is further provided with a second self-locking protruding block and a third self-locking protruding block. The protection door assembly is an internal self-balancing structure body, is internally provided with an elastic window, is especially suitable for a socket with a T-shaped jack, can prevent foreign matters except an electrical plug from being inserted, plays a protection role, and is simple in structure and low in manufacturing cost.

Description

Technical Field

[0001] The present application belongs to the technical field of electrical accessories, and in particular relates to an electrical socket device with a lock protection door. Background Art

[0002] Electrical sockets for household and similar purposes are widely used in residential buildings. They are usually installed on walls or floors close to the ground, or placed on objects such as the ground and tables. They are easily touched by people, especially children or young children who may insert foreign objects such as paper clips, electric pens, hairpins, fire pins, keys, etc. into any socket of the electrical socket, posing a risk of electric shock.

[0003] In order to prevent foreign objects from being inserted into the electrical socket, some electrical sockets are provided with protective doors inside. However, since the protective doors in most electrical sockets with protective doors have complex structures, large material consumption, and great assembly difficulty, the manufacturing cost is relatively high.

[0004] Furthermore, the prior art protection doors have poor drop and vibration resistance capabilities. Summary of the invention

[0005] The present application is an extension of CN117013291A, and provides an electrical socket device with a locking protective door, which is suitable for single-phase non-grounding plugs specified in the Chinese national standard GB 1002, American standard NEMA5-15P plugs, American standard NEMA6-20P plugs, etc., and is particularly suitable for sockets containing T-shaped sockets. The internal structure of the protective door is simple and stable; the combination between the protective door and the socket body is simple and easy to install; the protective door can prevent foreign objects from being inserted and play a protective role, and meets the standard requirements for connecting electrical paths of sockets with protective doors; thereby achieving the purpose of simple structure, easy assembly, and reduced manufacturing costs.

[0006] In order to solve the above technical problems, the technical solutions adopted in this application are as follows: An electrical socket device with a lock protection door, comprising a cover plate, a socket assembly and a protection door assembly, wherein the socket assembly comprises at least one socket, wherein the socket comprises a left socket sleeve and a right socket sleeve, wherein the cover plate is provided with a socket corresponding to the socket, wherein the socket comprises a left socket sleeve and a right socket sleeve, wherein the protection door assembly comprises a first protection door and a second protection door sequentially arranged along the left and right socket sleeve directions, wherein a protection door spring is arranged between the first protection door and the second protection door, wherein the first protection door comprises a first partition plate, wherein a left limiting end face is arranged on the first partition plate, wherein the second protection door comprises a second partition plate, wherein a right limiting end face is arranged on the second partition plate; The first partition is also provided with a first self-locking protrusion, and the second partition is also provided with a second self-locking protrusion and a third self-locking protrusion; When the first protective door is inserted into the second protective door and the protective door spring is installed, under the action of the spring force of the protective door spring, the first protective door moves in the direction away from the second protective door until the second self-locking protrusion blocks the first self-locking protrusion, or the third self-locking protrusion blocks the left limit end face and stops moving, thereby preventing the first protective door from separating from the second protective door.

[0007] Furthermore, the third self-locking protrusion is arranged on the left side of the second partition plate, corresponding to the left limit end surface, and has a square end surface shape.

[0008] Furthermore, the left socket is T-shaped and is suitable for both longitudinal and transverse latches, and the right socket is suitable for longitudinal latches.

[0009] Furthermore, the first partition is provided with a first window, the second partition is provided with a second window and an auxiliary window in the length direction, and the second window includes a second transverse window and a second longitudinal window.

[0010] Furthermore, the second transverse window is an elastic scissor-shaped structure, including two inclined surfaces inclined toward each other.

[0011] Furthermore, inner guide plates are provided on both sides of the second partition in the width direction to facilitate the insertion of the first protective door, and opening grooves are provided at positions of the inner guide plates corresponding to the inclined surfaces.

[0012] Furthermore, an outer guide plate is arranged inside the cover plate, and two opposite closed protrusions are arranged inside the outer guide plate.

[0013] The electrical socket device with a lock protection door proposed in this application has the following beneficial effects compared with the prior art: The protective door assembly relies on its own spring force and self-locking protrusions. After assembly, the internal structure is stable, the assembly is convenient, and the production cost is low. The protective door assembly forms a double isolation structure for the socket sleeve, which can prevent foreign objects from being inserted and play a protective role, and meet the basic structural requirements of electrical sockets with protective doors; the protective door assembly relies on the elastic force of the plastic part to open and close the protective door. It is suitable for American standard NEMA5-15P plugs, American standard NEMA6-20P plugs, single-phase non-grounded plugs specified in China's national standard GB 1002, etc., especially for sockets containing T-shaped sockets, with a simple and reliable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of an electrical socket device assembly with a lock protection door for this application.

[0015] Figure 2 This is a schematic diagram of the installation of the protection door assembly for this application.

[0016] Figure 3This is a schematic diagram of the dispersed structure of the door assembly for protection of this application.

[0017] Figure 4 This is a schematic diagram of the components of the door assembly for protection of this application.

[0018] Figure 5 This is a schematic diagram of the horizontal window of the door assembly for protection of this application.

[0019] Figure 6 This is a schematic diagram of the protection door action for this application.

[0020] Description of reference numerals: 1. Cover plate; 111. Left socket; 112. Right socket; 2. Socket assembly; 211. Left socket; 212. Right socket; 3. Protective door assembly; 31. First protective door; 310. Left oblique block; 314. First partition; 319. Left limit end surface; 311. Left spring seat; 315. First window; 316. First self-locking protrusion; 32. Second protective door; 320. Right oblique block; 321. Right spring seat; 323. Second window; 3231. Second horizontal window; 3232 , second longitudinal window; 324, second partition; 325, auxiliary window; 3262, second self-locking protrusion; 3263, third self-locking protrusion; 327, opening groove; 328, notch; 329, right limit end face; 33, protective door spring; 511, left horizontal latch; 512, left longitudinal latch; 52, right latch; 13, left baffle; 15, right baffle; 18, upper baffle; 19, outer guide plate; 191, closing protrusion; 23, support frame; 32311, inclined body. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be an intermediate component. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0023] Embodiment 1: In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an electrical socket device with a lock protection door is proposed, comprising a cover plate 1 and a socket assembly 2, wherein the socket assembly 2 comprises at least one socket, wherein the socket comprises a left socket sleeve 211 and a right socket sleeve 212, and wherein the cover plate 1 is provided with a socket corresponding to the socket, wherein the socket comprises a left socket sleeve 111 and a right socket sleeve 112. The electrical socket device with a lock protection door further comprises a protection door assembly 3 disposed between each socket and its corresponding socket.

[0024] This embodiment takes a device with two sockets as an example, the two sockets are arranged front and back, each socket can be three-pin or two-pin, and the three-pin socket also includes a ground wire socket and a socket sleeve. The protective door assembly of this embodiment is used to protect the two sockets of the AC circuit in the socket to prevent foreign objects from inserting and electric shock. The two sockets are arranged left and right as an example for explanation. This application is not limited to the number of sockets on the device, nor is it limited to the specific arrangement of the sockets, which will not be repeated below.

[0025] The protection door assembly 3 is arranged between each socket and its corresponding socket. The protection door assembly 3 includes a first protection door 31 and a second protection door 32 arranged in sequence along the left and right socket directions. The first protection door 31 is inserted into the second protection door 32. A protection door spring 33 is arranged between the first protection door 31 and the second protection door 32.

[0026] Specifically, the first protective door 31 includes a first partition 314, the left end face of the first partition 314 is a left limiting end face 319, a left inclined block 310 is arranged above the left side of the first partition 314, the left end face of the left inclined block 310 is an inclined surface, a left spring seat 311 is arranged on the right end face of the left inclined block 310, and a first window 315 is arranged on the first partition 314.

[0027] The second protection door 32 comprises a second partition 324, on which a right oblique block 320 is arranged, the right end surface of the right oblique block 320 is an inclined surface, the left end surface of the right oblique block 320 is arranged with a right spring seat 321, both sides of the second partition 324 in the width direction are arranged with inner guide plates 322 for facilitating the insertion of the first protection door 31, the second partition 324 is arranged with a second window 323 and an auxiliary window 325 in the length direction, and a notch 328 is arranged between the right oblique block 320 and the second partition 324 for facilitating the passage of the first partition 314. The second protection door 32 is also provided with a right limiting end surface 329, which is arranged on the lower end surface of the right oblique block 320.

[0028] like Figure 2 and Figure 5As shown, a support frame 23 for supporting the protection door assembly 3 is provided above the socket, and is used to support the protection door assembly 3. Windows corresponding to the left and right sockets are provided thereon, so that the bolt can enter the socket through the window. The inner side of the cover plate 1 is provided with a left baffle 13, a right baffle 15, an outer guide plate 19 and an upper baffle 18 corresponding to each protection door assembly 3. During installation, the left limit end face 319 of the protection door assembly 3 is limited by the left baffle 13, and the right limit end face 329 of the protection door assembly 3 is limited by the right baffle 15. The left baffle 13, the right baffle 15, the upper baffle 18, the support frame 23, and the outer guide plate 19 limit the movement of the protection door assembly 3, and the protection door assembly 3 can only move left and right. The left baffle 13 and the right baffle 15 limit the left and right movement of the protection door assembly 3, and make it move only in an area in the left and right directions. The upper baffle plate 18 and the support frame 23 are used to prevent the protective door assembly 3 from moving up and down; the outer guide plate 19 is used to prevent the protective door assembly 3 from moving forward and backward.

[0029] In the normal use of the socket, the plug of the plug is inserted into the socket and enters the socket sleeve to achieve the effect of power supply. When the plugs are inserted into both the left and right sockets, the first protection door 31 and the second protection door 32 move to the right and left sides respectively under the push of the plugs to release the protection of the left and right sockets; when the plugs are not inserted into both the left and right sockets, the first protection door 31 and the second protection door 32 form a double protection for the left and right sockets under the action of the protection door spring 33; when a foreign object is inserted into either the left or right socket, only the corresponding protection door moves to maintain at least one layer of protection for the left and right sockets.

[0030] In the electrical socket device with a lock protection door of this embodiment, the first protection door 31 is inserted into the second protection door 32. After the insertion, the first partition plate 314 is placed between the inner guide plates 322 and passes through the notch 328, and the protection door spring 33 is placed between the left spring seat 311 and the right spring seat 321. When the left and right sockets are both inserted with a bolt, the first window 315 and the auxiliary window 325 serve as a passage for the bolt to be inserted into the right socket, and the second window 323 serves as a passage for the bolt to be inserted into the left socket.

[0031] In this embodiment, the left inclined block 310 is trapezoidal, with a wider joint surface with the first partition plate 314 and a narrower top surface. The inclined surface slopes from the lower left to the upper right, so that when the latch is inserted into the extruded inclined surface, the first protective door 31 is pushed to move to the right.

[0032] It should be noted that the left bevel block 310 can also be other shapes, such as a triangle or other heterogeneous shapes. It is only necessary to drive the first protective door 31 to move to the right when the pin is inserted into the extrusion bevel. The left limit end face 319 can also be set at other positions of the first protective door 31, such as on the left bevel block 310. It is only necessary to make the first protective door 31 no longer move to the left because its left limit end face 319 is blocked by the left baffle 13, and it does not hinder the second protective door 32 from moving left and right. The position of the left bevel block 310 on the first partition 314 can also be set slightly to the right, and it is most preferred to set it at the leftmost side, which can reduce the length of the first protective door 31. It will not be repeated here.

[0033] In this embodiment, the right inclined block 320 is trapezoidal, with a wider joint surface with the second partition plate 324 and a narrower top surface. The inclined surface slopes from the lower right to the upper left, so that when the latch is inserted into the extruded inclined surface, the second protective door 32 is pushed to move leftward.

[0034] It should be noted that the right bevel block 320 can also be other shapes, such as a triangle or other heterogeneous shapes. It is only necessary to push the second protective door 32 to move to the left when the pin is inserted into the extrusion bevel; the position of the right bevel block 320 on the second partition 324 is set on the right side. The specific position is set based on the conditions that it can protect the socket when the pin is not inserted and facilitate the insertion of the pin into the socket when the pin is inserted; the right limit end face 329 can also be set at other positions of the second protective door 32, such as the right end face of the second partition 324 or the outer side face of the inner guide plate 322. It is only necessary to make the second protective door 32 no longer move to the right because its right limit end face 329 is blocked by the right baffle 15, and it does not hinder the left and right movement of the first protective door 32. No further details are given here.

[0035] In this embodiment, a first window 315 is provided on the first partition 314, and a second window 323 and an auxiliary window 325 are provided in the length direction of the second partition 324. When a plug is inserted into both the left and right sockets, the first window 315 and the auxiliary window 325 serve as a passage for the plug to be inserted into the right socket; when a plug is inserted into both the left and right sockets, the second window 323 serves as a passage for the plug to be inserted into the left socket.

[0036] The purpose of setting these windows is to reserve channels for the plug to be inserted into the socket when the plug is inserted. These channels are blocked by the first protective door and the second protective door when no plug or other foreign objects are inserted, thereby protecting the socket.

[0037] Embodiment 2: This embodiment is improved on the basis of the embodiment 1, mainly by adding a lock structure, thereby improving the anti-drop and anti-vibration capabilities of the protective door assembly 3, and ensuring the structural stability of the assembled protective door assembly 3.

[0038] Specifically, the first partition 314 is provided with a first self-locking protrusion 316, and the second partition 324 is provided with a second self-locking protrusion 3262 and a third self-locking protrusion 3263. When the first protection door 31 is inserted into the second protection door 32 and the protection door spring 33 is installed, the first protection door 31 can only move left and right under the restriction of the inner guide plate 322, and under the action of the spring force of the protection door spring 33, it moves in the direction away from the second protection door 32 until the second self-locking protrusion 3262 blocks the first self-locking protrusion 316, or the third self-locking protrusion 3263 blocks the left limit end face 319 and stops moving, thereby preventing the first protection door 31 from separating from the second protection door 32.

[0039] The limiting of the first self-locking protrusion 316 by the second self-locking protrusion 3262 and the limiting of the left limiting end surface 319 by the third self-locking protrusion 3263 improve the anti-fall and anti-vibration capabilities of the protective door assembly, ensuring the structural stability of the assembled protective door assembly 3.

[0040] It should be noted that the third self-locking protrusion 3263 can be set at any position of the second protection door 32 corresponding to the left limit end face 319, and the shape of the third self-locking protrusion 3263 can be any applicable structure, such as an end face, a protrusion, a slot or other structures, as long as the interlocking limit function is achieved and the relative displacement relationship between the first protection door 31 and the second protection door 32 is met. In a preferred embodiment, the third self-locking protrusion 3263 is set on the left side of the second partition 324, corresponding to the left limit end face 319, and has a square end face shape.

[0041] The first self-locking protrusion 316 can be set at different positions of the first protection door 31, and the second self-locking protrusion 3262 can be set at any position of the second protection door 32 corresponding to the first self-locking protrusion 316. At the same time, the shapes of the first self-locking protrusion 316 and the second self-locking protrusion 3262 can be any applicable structures, such as end faces, protrusions, slots or other structures, as long as the interlocking of the first protection door 31 and the second protection door 32 is achieved and the relative displacement relationship between the first protection door 31 and the second protection door 32 is met. In a preferred embodiment, the first self-locking protrusion 316 is a protrusion and is set on the right side of the first partition 314, and the second self-locking protrusion 3262 is a recessed part on both sides of the right oblique block 320.

[0042] Embodiment 3: The left socket 111 and the right socket 112 corresponding to the American standard NEMA 5-15P plug are two parallel sockets, while the left socket 111 and the right socket 112 corresponding to the American standard NEMA 6-20P plug are in the shape of one horizontal and one vertical.

[0043] like Figure 1As shown, this embodiment is applicable to both the American standard NEMA5-15P plug and the American standard NEMA6-20P plug, and its left socket 111 is a T-shaped socket, which is applicable to both longitudinal and transverse plugs, while the right socket 112 is only applicable to longitudinal plugs.

[0044] In order to adapt to the shape of the two sockets, one horizontal and one vertical, the protection door assembly 3 is improved in this embodiment.

[0045] Specifically, Figure 4 , Figure 5 As shown, the second window 323 includes a second transverse window 3231 and a second longitudinal window 3232 . The second transverse window 3231 is used to insert the left transverse latch 511 , and the second longitudinal window 3232 is used to insert the left longitudinal latch 512 .

[0046] The second transverse window 3231 is an elastic scissor-shaped structure, including two inclined surfaces 32311 inclined toward each other, and can be opened or closed under the action of an external force.

[0047] like Figure 4 (c) and Figure 5 As shown in (b), inner guide plates 322 are provided on both sides of the second partition plate 324 in the width direction to facilitate the insertion of the first protection door 31. Two inclined surfaces 32311 are located at the left end of the second partition plate 324. The inner guide plate 322 is provided with opening grooves 327 at positions corresponding to the inclined surfaces 32311.

[0048] like Figure 5 As shown in (a), an outer guide plate 19 is provided inside the cover plate (1), and two opposite closing protrusions 191 are provided inside the outer guide plate 19.

[0049] It should be noted that the functions of the second vertical window 3232 , the first window 315 and the auxiliary window 325 are the same as those in Embodiment 1, and are not described in detail here.

[0050] like Figure 5 As shown in (b), a second window 323 is provided on the left area of ​​the second partition 324, and the second window 323 is composed of a second transverse window 3231 and a second longitudinal window 3232 connected together. The left area of ​​the second partition 324 is designed as an elastic structure, and the second transverse window 3231 is composed of two openable inclined surfaces 32311, shaped like a scissor mouth, and the inclined surfaces of the two inclined surfaces 32311 are inclined toward each other. Under the elastic force of their own materials, the two inclined surfaces 32311 are naturally closed.

[0051] Specifically, Figure 5As shown in (a), the first protection door 31 moves to the extreme left end under the action of the protection door spring 3, blocking above the second horizontal window 3231. The second protection door 32 moves to the extreme right end under the action of the protection door spring 33. The two closing protrusions 191 on the inner side of the outer guide plate 19 squeeze the left outer side surface of the second partition 324, thereby forming an extrusion force in the opening and closing direction of the two inclined bodies 32311 of the second horizontal window 3231, so that the second horizontal window 3231 is in a forced closed state, preventing the left horizontal latch 511 from passing through the second horizontal window 3231.

[0052] like Figure 5 (d) Figure 6 (a) Figure 6 As shown in (b), when the left horizontal latch 511 and the right latch 52 (such as the neutral line latch and the phase line latch of the American standard NEMA6-20P) are inserted downward from the left socket 111 and the right socket 112 respectively, on the one hand, the lower end of the right latch 52 pushes the second protection door 32 to move to the leftmost end, and the auxiliary window 325 moves to the bottom of the right socket 112, and at the same time, the two closing protrusions 191 enter the corresponding opening grooves 327, eliminating the squeezing force acting on both sides of the second partition 324, that is, the opening and closing directions of the two inclined planes 32311 are not squeezed by external force, and the two inclined planes 32311 are naturally closed; on the other hand, the lower end of the left horizontal latch 511 pushes the first protection door 31 to move to the rightmost end, and the first window 315 moves to the right just below the right socket 112, and at the same time pushes open the shielding above the second horizontal window 3231. That is, under the push of the left transverse latch 511 and the right latch 52, the squeezing force and the shielding object on the second transverse window 3231 are eliminated, so that the second transverse window 3231 is in a free state. At this time, the end of the left transverse latch 511 squeezes and separates the two scissor-shaped inclined surfaces 32311 of the second transverse window 3231 until the left transverse latch 511 passes through the second window 323 and contacts the left plug sleeve 211; at the same time, the right latch 52 passes through the first window 315 and the auxiliary window 325 until it contacts the right plug sleeve 212.

[0053] like Figure 5 (c) Figure 6 As shown in (c), when the right plug 52 and the left longitudinal plug 512 (such as the phase line and neutral line of the single-phase non-grounded plug in the national standard GB1002, or the phase line plug and neutral line plug of the American standard NEMA5-15P) are inserted from the right socket 111 and the left socket 112 at the same time, the second longitudinal window 3232 moves to the bottom of the left socket 111, the left bevel block 310 is pushed to the right, and the left longitudinal plug 512 can directly pass through the second longitudinal window 3232 until it contacts the left socket 211; at the same time, the right plug 52 passes through the first window 315 and the auxiliary window 325 until it contacts the right socket 212.

[0054] like Figure 6 (d) Figure 6 As shown in (e), when a single foreign object is inserted from the left socket 111, the foreign object pushes the left bevel block 310, causing the first protection door 31 to move to the right. However, because the second protection door 32 is at the rightmost end, the second window 323 is not below the left socket 111, and the two closing protrusions 191 on the inner side of the outer guide plate 19 squeeze the left outer side surface of the second partition 324. The second transverse window 3231 is in a forced closed state due to lateral squeezing, which effectively prevents foreign objects from passing through the protection door and contacting the left socket 211.

[0055] like Figure 6 As shown in (f), when a single foreign object is inserted from the right socket 112, the foreign object pushes the right bevel block 320, causing the second protection door 32 to move to the left. However, because the first protection door 31 is at the leftmost end, the first window 315 is not below the right socket 112, effectively preventing the foreign object from passing through the protection door and contacting the right socket 212.

[0056] It should be noted that the device includes at least one socket, which can be installed or moved in any direction, but the change in its spatial position will not change the relative position relationship between the electrical socket and the components of its protective door. Due to the habit of expressing three-dimensional views, a horizontally placed electrical socket with two sockets distributed left and right is used to express the position relationship of each component and part, which leads to the relative relationship of up and down, left and right, front and back in this specification. The description of up and down, left and right, front and back does not affect the scope of protection involved in the claims of this application. Among them, the "plate" or "frame" in the left baffle, right baffle, upper baffle, support frame, outer guide plate, and rear guide plate can be composed of one or more strips, blocks, plates and their combinations, and can be set at different parts of the cover plate or socket assembly to achieve the blocking or limiting function of the relevant components of the protective door assembly in spatial orientation. Among them, the "blocks", "plates" and "surfaces" contained in the left oblique block, the first partition, the left limit end face, the right oblique block, the second partition, the right limit end face and the inner guide plate can be composed of one or more strips, blocks, plates, surfaces and their combinations, which can be set at different positions of related parts, and their structures correspond to the structures of the related parts and parts of the cover plate and the socket assembly in spatial orientation to achieve the limiting effect of the relative positions between the parts. The structures without figure marks in the figure have no impact on the technical solution of this application and will not be repeated here.

[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above-described embodiments only express the more specific and detailed embodiments described in this application, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of this application, which all belong to the protection scope of this application. Therefore, the protection scope of the patent application shall be based on the attached claims.

Claims

1. An electrical socket device with a lockable protective door, comprising a cover plate (1), a socket assembly (2) and a protective door assembly (3), wherein the socket assembly (2) comprises at least one socket, wherein the socket comprises a left socket sleeve (211) and a right socket sleeve (212), wherein the cover plate (1) is provided with a socket corresponding to the socket, wherein the socket comprises a left socket sleeve (111) and a right socket sleeve (112), wherein: The protection door assembly (3) comprises a first protection door (31) and a second protection door (32) which are arranged in sequence along the left and right socket directions; a protection door spring (33) is arranged between the first protection door (31) and the second protection door (32); the first protection door (31) comprises a first partition plate (314); a left limiting end surface (319) is arranged on the first partition plate (314); the second protection door (32) comprises a second partition plate (324); a right limiting end surface (329) is arranged on the second partition plate (324); The first partition plate (314) is also provided with a first self-locking protrusion (316), and the second partition plate (324) is also provided with a second self-locking protrusion (3262) and a third self-locking protrusion (3263); When the first protective door (31) is inserted into the second protective door (32) and the protective door spring (33) is installed, the first protective door (31) moves in a direction away from the second protective door (32) under the action of the spring force of the protective door spring (33) until the second self-locking protrusion (3262) blocks the first self-locking protrusion (316), or the third self-locking protrusion (3263) blocks the left limit end face (319) and stops moving, thereby preventing the first protective door (31) from separating from the second protective door (32).

2. The electrical socket device with a lock protection door as claimed in claim 1, characterized in that: The third self-locking protrusion (3263) is arranged on the left side of the second partition plate (324), corresponding to the left limiting end surface (319), and has a square end surface shape.

3. The electrical socket device with a lock protection door as claimed in claim 1, characterized in that: The left socket (111) is T-shaped and is suitable for longitudinal or transverse latches, and the right socket (112) is suitable for longitudinal latches.

4. The electrical socket device with a lock protection door as claimed in claim 3, characterized in that: The first partition plate (314) is provided with a first window (315), and the second partition plate (324) is provided with a second window (323) and an auxiliary window (325) in the length direction, and the second window (323) comprises a second transverse window (3231) and a second longitudinal window (3232).

5. The electrical socket device with a lock protection door as claimed in claim 4, characterized in that: The second transverse window (3231) is an elastic scissor-shaped structure, comprising two inclined surfaces (32311) inclined towards each other.

6. The electrical socket device with a lock protection door as claimed in claim 5, characterized in that: Inner guide plates (322) are provided on both sides of the second partition plate (324) in the width direction to facilitate the insertion of the first protection door (31), and opening grooves (327) are provided at positions of the inner guide plates (322) corresponding to the inclined surface (32311).

7. The electrical socket device with a lock protection door as claimed in claim 5, characterized in that: An outer guide plate (19) is arranged inside the cover plate (1), and two opposite closing protrusions (191) are arranged inside the outer guide plate (19).

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