阅读说明：本技术 具有过载保护功能的智能插线板 (Intelligent patch board with overload protection function ) 是由 沈一群 于 2020-07-17 设计创作，主要内容包括：本发明揭示一种具有过载保护功能的智能插线板,包括排插本体和插头本体,排插本体通过电源线与插头本体电连接,插头本体包括后壳体和前盖板,后壳体的底部穿设有两个导电插片,后壳体的内部设置有推杆,推杆的上端与后壳体滑动连接,两个导电插片之间的后壳体的底部设置有通孔,推杆的下端活动插入在通孔中；后壳体上设置有第一锁紧机构,后壳体的后侧内壁上固定有用于驱动第一锁紧机构以使第一锁紧机构解锁推杆的电磁铁,推杆与后壳体之间设置有驱动机构,后壳体上设置有复位机构,后壳体上设置有第二锁紧机构；本发明能够达到过载保护的目的,进而能够避免插线板出现起火燃烧的现象,消除了安全隐患。(The invention discloses an intelligent patch board with an overload protection function, which comprises a patch board body and a plug body, wherein the patch board body is electrically connected with the plug body through a power line; the rear shell is provided with a first locking mechanism, an electromagnet for driving the first locking mechanism to enable the first locking mechanism to unlock the push rod is fixed on the inner wall of the rear side of the rear shell, a driving mechanism is arranged between the push rod and the rear shell, the rear shell is provided with a resetting mechanism, and the rear shell is provided with a second locking mechanism; the invention can achieve the purpose of overload protection, further avoid the phenomenon of fire burning of the patch board and eliminate potential safety hazards.)

1. The utility model provides an intelligent patch board with overload protection function, includes extension socket body (1) and plug body (2), extension socket body (1) is connected with plug body (2) electricity through power cord (3), plug body (2) include back casing (21) and front shroud (22), opening part at back casing (21) front end is fixed in front shroud (22), two electrically conductive inserted sheets (23) are worn to be equipped with in the bottom of back casing (21), electrically conductive inserted sheet (23) are fixed with back casing (21), two sinle silks (31) in power cord (3) are connected with one of them electrically conductive inserted sheet (23) electricity respectively; the method is characterized in that: a push rod (4) is arranged inside the rear shell (21), the push rod (4) is used for abutting against a wall socket when the patch board is overloaded so that the conductive insertion pieces (23) on the plug body (2) are separated from the wall socket, the upper end of the push rod (4) is connected with the rear shell (21) in a sliding mode, a through hole (211) is formed in the bottom of the rear shell (21) between the two conductive insertion pieces (23), and the lower end of the push rod (4) is movably inserted into the through hole (211); be provided with on back casing (21) and move up the first locking mechanism who is used for locking push rod (4) after reseing on push rod (4), be fixed with on the rear side inner wall of back casing (21) and be used for driving first locking mechanism so that electromagnet (5) of first locking mechanism unblock push rod (4), electromagnet (5) and one of them sinle silk (31) series connection, be provided with between push rod (4) and back casing (21) and be used for driving actuating mechanism that push rod (4) moved down behind first locking mechanism unblock push rod (4), be provided with on back casing (21) and be used for driving push rod (4) and move up the canceling release mechanical system who resets, be provided with on back casing (21) and be used for preventing the second locking mechanism that push rod (4) freely moved down when canceling release mechanical system drive push rod (4) move up and reset.

2. The intelligent patch board with the overload protection function according to claim 1, wherein the first locking mechanism comprises a first sliding plate (61), a first clamping tooth block (611) is integrally formed on an inner end surface of the first sliding plate (61), and a first tooth groove (41) which is used for being matched and clamped with the first clamping tooth block (611) after the push rod (4) moves upwards and returns is arranged on the outer wall of the push rod (4); the outer walls of two ends of the first sliding plate (61) are integrally formed with first sliding rods (612) extending outwards, the outer end of each first sliding rod (612) movably penetrates through one of the first supporting blocks (212) on the inner wall of the rear side of the rear shell (21) and then extends out of the corresponding first supporting block (212), each first sliding rod (612) extends out of the first supporting block (212) and then is connected with a first clamp spring (62) in a matched and clamped mode, a first spring (63) used for pushing the first sliding plate (61) to enable the first clamp tooth block (611) to be connected with the first tooth groove (41) in a matched and clamped mode is sleeved on the outer portion of each first sliding rod (612) between the first sliding plate (61) and each first supporting block (212), and an electromagnet sheet (64) used for being magnetically attracted with the first sliding plate (5) when the electromagnet (5) is electrified is fixed in the middle of the outer end face of the first sliding plate (61).

3. The intelligent patch board with the overload protection function according to claim 1, the reset mechanism comprises a gear (7) which is rotationally connected with the inner wall of the rear side of the rear shell (21), a rack part (42) which is used for being meshed with the gear (7) is arranged on the outer wall of the push rod (4), a pin shaft (213) is integrally formed on the inner wall of the rear side of the rear shell (21), the gear (7) is sleeved outside the pin shaft (213) and is rotationally connected with the pin shaft (213), a boss (71) which is coaxial with the gear (7) is integrally formed on the front end surface of the gear (7), the boss (71) is movably arranged in the front cover plate (22) in a penetrating mode, and a cross groove (72) used for being matched with the end portion of the cross screwdriver to facilitate the cross screwdriver to rotate the boss (71) and the gear (7) is formed in the front end face of the boss (71).

4. The intelligent patch board with the overload protection function according to claim 3, wherein the second locking mechanism comprises a second sliding plate (81) and a second latch block (82), a sawtooth part (43) which is matched and clamped with the inner end part of the second latch block (82) when the push rod (4) moves upwards and returns is arranged on the side wall of the push rod (4), two bolts (83) distributed in the vertical direction movably penetrate through the outer end part of the second latch block (82), each bolt (83) penetrates through the second latch block (82) and then is in threaded connection with the second sliding plate (81), a second spring (84) is sleeved outside the bolt (83) between the second sliding plate (81) and the second latch block (82), and two ends of the second spring (84) respectively abut against the second sliding plate (81) and the second latch block (82); second sliding rods (811) extending inwards are integrally formed on the inner walls of the two ends of the second sliding plate (81), the inner end part of each second sliding rod (811) movably penetrates through one second supporting block (214) on the inner wall of the rear side of the rear shell (21) and then extends out of the corresponding second supporting block (214), and a second snap spring (85) is clamped in a matched manner after each second sliding rod (811) extends out of the second supporting block (214), a third spring (86) is sleeved outside the second sliding rod (811) between the second sliding plate (81) and the second supporting block (214), two ends of the third spring (86) are respectively propped against the second sliding plate (81) and the second supporting block (214), a pressing rod (812) extending along the transverse direction is integrally formed in the middle of the outer end surface of the second sliding plate (81), one end of the pressing rod (812) far away from the second sliding plate (81) movably penetrates through the rear shell (21) and then extends out of the rear shell (21).

5. The intelligent patch board with the overload protection function according to claim 1, wherein a supporting seat (215) is integrally formed on the inner wall of the rear side of the rear housing (21), the upper end of the push rod (4) extends into the supporting seat (215) and is slidably connected with the supporting seat (215), sliders (44) are integrally formed on the outer walls of the left side and the right side of the upper end of the push rod (4), sliding grooves (216) are formed on the side walls of the left side and the right side of the supporting seat (215), and the sliders (44) on each side of the push rod (4) are slidably connected with the sliding grooves (216) on the corresponding side.

6. The intelligent patch board with the overload protection function according to claim 5, wherein the driving mechanism comprises a fourth spring (9), a blind hole (45) with an upper end opened is formed in the push rod (4), the fourth spring (9) is arranged in the blind hole (45), the upper end of the fourth spring (9) abuts against the inner top of the supporting seat (215), and the lower end of the fourth spring (9) abuts against the inner bottom of the blind hole (45).

7. The intelligent patch board with the overload protection function according to claim 6, wherein an annular guide surface (46) used for being matched with the fourth spring (9) to guide the fourth spring (9) to facilitate the fourth spring (9) to retract into the blind hole (45) is arranged on the inner peripheral wall of the upper end of the blind hole (45).

8. The intelligent patch board with the overload protection function according to claim 1, wherein each wire core (31) is fixed on the inner wall of the rear side of the rear housing (21) through a plurality of wire pressing buckles (32).

Technical Field

The invention relates to the technical field of electrical devices, in particular to an intelligent patch board with an overload protection function.

Background

The wiring board is an electrical device which is commonly used in life and used for prolonging a socket or expanding a socket, when the existing wiring board is connected with too many electrical appliances or high-power electrical appliances in the using process, the phenomenon of overload easily occurs, and after the wiring board is overloaded, the phenomenon of burning easily occurs, so that great potential safety hazards exist.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the intelligent patch board with the overload protection function, when the patch board is used, when the overload phenomenon occurs, the patch board can automatically cut off the power supply, so that the purpose of overload protection can be achieved, the phenomenon that the patch board is ignited and burnt can be avoided, and the potential safety hazard is eliminated.

The intelligent patch board with the overload protection function comprises a patch board body and a plug body, wherein the patch board body is electrically connected with the plug body through a power line, the plug body comprises a rear shell and a front cover plate, the front cover plate is fixed at an opening at the front end of the rear shell, two conductive insertion pieces penetrate through the bottom of the rear shell, the conductive insertion pieces are fixed with the rear shell, and two wire cores in the power line are respectively and electrically connected with one conductive insertion piece; a push rod is arranged in the rear shell and is used for abutting against the wall socket when the patch board is overloaded so as to enable the conductive insertion pieces on the plug body to be separated from the wall socket, the upper end of the push rod is connected with the rear shell in a sliding manner, a through hole is formed in the bottom of the rear shell between the two conductive insertion pieces, and the lower end of the push rod is movably inserted into the through hole; the rear shell is provided with a first locking mechanism which is used for locking the push rod after the push rod moves upwards and resets, an electromagnet which is used for driving the first locking mechanism to unlock the push rod by the first locking mechanism is fixed on the inner wall of the rear side of the rear shell, the electromagnet is connected with one of the wire cores in series, a driving mechanism which is used for driving the push rod to move downwards after the push rod is unlocked by the first locking mechanism is arranged between the push rod and the rear shell, the rear shell is provided with a resetting mechanism which is used for driving the push rod to move upwards and reset, and the rear shell is provided with a second locking mechanism which is used for preventing the push rod from freely moving downwards when the resetting mechanism drives.

The intelligent patch board with the overload protection function comprises a first locking mechanism, a second locking mechanism and a third locking mechanism, wherein the first locking mechanism comprises a first sliding plate, a first clamping tooth block is integrally formed on the inner end face of the first sliding plate, and a first tooth groove which is used for being matched and clamped with the first clamping tooth block after the push rod moves upwards and resets is formed in the outer wall of the push rod; first sliding rods extending outwards are integrally formed on the outer walls of the two ends of the first sliding plate, the outer end portion of each first sliding rod movably penetrates through one of the first supporting blocks on the inner wall of the rear side of the rear shell and then extends out of the corresponding first supporting block, a first snap spring is clamped in a matched manner after each first sliding rod extends out of the first supporting block, a first spring used for pushing the first sliding plate to enable the first snap tooth block to be clamped with the first tooth groove in a matched manner is sleeved outside each first sliding rod between the first sliding plate and each first supporting block, and an iron sheet used for being magnetically attracted with the electromagnet when the electromagnet is electrified is fixed in the middle of the outer end face of the first sliding plate; after the first locking mechanism is adopted and the push rod moves upwards and returns, the first sliding plate can move inwards under the action of the first spring, and at the moment, the first clamping tooth block on the first sliding plate can be matched and clamped with the first tooth groove on the push rod, so that the push rod can be locked; when the wiring board is overloaded, the current in the power line and the wire core is increased, namely the current in the electromagnet is increased, so that the attraction of the electromagnet is improved, namely the electromagnet can magnetically attract the iron sheet on the first sliding plate, after the electromagnet magnetically attracts the iron sheet, the first sliding plate can overcome the elastic force of the first spring and move outwards, at the moment, the first latch block can be separated from the first tooth groove under the action of the first sliding plate, so that the push rod can be unlocked, after the push rod is unlocked, the push rod can move downwards under the action of the driving mechanism, after the push rod moves downwards, the push rod can abut against the wall socket and push the wall socket, after the wall socket is pushed, the conductive insert sheet in the plug body can be separated from the wall socket by the reactive force applied by the wall socket to the push rod, so that the wiring board can achieve the purpose of separating from the wall socket, namely, the patch board can cut off the power supply, thereby playing the function of overload protection.

The invention discloses an intelligent patch board with an overload protection function, wherein a reset mechanism comprises a gear which is rotatably connected on the inner wall of the rear side of a rear shell, a rack part which is used for being meshed with the gear is arranged on the outer wall of a push rod, a pin shaft is integrally formed on the inner wall of the rear side of the rear shell, the gear is sleeved outside the pin shaft and is rotatably connected with the pin shaft, a boss which is coaxially arranged with the gear is integrally formed on the front end surface of the gear, the boss is movably arranged in a front cover plate in a penetrating manner, and a cross groove which is used for being matched with the end part of a cross screwdriver to facilitate the rotation of the boss and the gear by the cross; after the reset mechanism is adopted, when the cross screwdriver is matched with the cross groove and the gear is rotated clockwise, the gear is meshed with the rack part under the action of the gear, so that the push rod can be driven to move upwards for resetting, and compared with a mode of pushing the push rod upwards by hands, the aim of saving labor can be fulfilled.

The invention discloses an intelligent patch board with an overload protection function, wherein a second locking mechanism comprises a second sliding plate and a second latch block, a sawtooth part which is matched and clamped with the inner end part of the second latch block when a push rod moves upwards and resets is arranged on the side wall of the push rod, two bolts distributed in the vertical direction penetrate through the outer end part of the second latch block, each bolt penetrates through the second latch block and then is in threaded connection with the second sliding plate, a second spring is sleeved outside the bolt between the second sliding plate and the second latch block, and two ends of the second spring are respectively abutted against the second sliding plate and the second latch block; second sliding rods extending inwards are integrally formed on the inner walls of the two ends of the second sliding plate, the inner end of each second sliding rod movably penetrates through one of the second supporting blocks on the inner wall of the rear side of the rear shell and then extends out of the corresponding second supporting block, a second snap spring is clamped in each second sliding rod in a matched manner after the second sliding rod extends out of the second supporting block, a third spring is sleeved outside the second sliding rod between the second sliding plate and the second supporting block, the two ends of the third spring respectively abut against the second sliding plate and the second supporting block, a pressing rod extending in the transverse direction is integrally formed in the middle of the outer end face of the second sliding plate, and one end of the pressing rod, far away from the second sliding plate, movably penetrates through the rear shell and then extends out of the rear shell; after the second locking mechanism is adopted, in the process that the driving mechanism drives the push rod to move upwards and reset, a user can press the press rod, after the press rod is pressed down, the press rod can drive the second sliding plate, the second sliding rod, the second clamping tooth block, the bolt and the third spring to move inwards, and after the second clamping tooth block moves inwards, the second clamping tooth block can be clamped with one of the sawtooth grooves in the sawtooth parts on the push rod in a matching way, so that the situation that the push rod freely moves downwards in the process that the driving mechanism drives the push rod to move upwards and reset can be avoided, in addition, in the state that the press rod is continuously pressed down, in the process that the push rod continuously moves upwards, when the second clamping tooth block needs to be clamped with the next sawtooth groove in the sawtooth parts in a matching way, the push rod can firstly press the second clamping tooth block, the second clamping tooth block can move outwards and compress the third spring after being pressed, and when the second clamping tooth block reaches the position of the next sawtooth groove in the sawtooth parts, the second latch piece can cooperate the joint with this sawtooth groove under the effect of third spring, so, last chucking to the push rod can be realized to the second latch piece at the in-process that the push rod lasted to shift up, and in-process second latch piece that resets that shifts up lasts at actuating mechanism drive push rod promptly can realize the lasting locking to the push rod to can avoid shifting up the in-process that resets at actuating mechanism drive push rod the circumstances that the push rod freely moved down appears.

The intelligent patch board with the overload protection function, disclosed by the invention, is characterized in that a supporting seat is integrally formed on the inner wall of the rear side of a rear shell, the upper end of a push rod extends into the supporting seat and is in sliding connection with the supporting seat, sliding blocks are integrally formed on the outer walls of the left side and the right side of the upper end of the push rod, sliding grooves are formed in the left side wall and the right side wall of the supporting seat, and the sliding block on each side of the push rod is in sliding connection with the sliding groove on the corresponding; after adopting this kind of structure, the push rod can reliably with back casing sliding connection, and through the setting of slider and spout, can realize spacing to the circumference of push rod.

The intelligent wiring board with the overload protection function comprises a driving mechanism, a push rod and a support seat, wherein the driving mechanism comprises a fourth spring, a blind hole with an opening at the upper end is formed in the push rod, the fourth spring is arranged in the blind hole, the upper end of the fourth spring abuts against the inner top of the support seat, and the lower end of the fourth spring abuts against the inner bottom of the blind hole; after the driving mechanism is adopted, after the first locking mechanism unlocks the push rod, the push rod can move downwards under the action of the fourth spring, the push rod can abut against the wall socket and push the wall socket after moving downwards, after the wall socket is pushed, the reactive force applied to the push rod by the wall socket can enable the conductive insertion sheet in the plug body to be separated from the wall socket, so that the purpose that the patch board is separated from the wall socket can be achieved, namely, the power supply of the patch board can be disconnected, and the function of overload protection is achieved.

According to the intelligent patch board with the overload protection function, the inner peripheral wall at the upper end of the blind hole is provided with the annular guide surface which is used for being matched with the fourth spring for guiding so as to facilitate the fourth spring to be retracted into the blind hole; through the setting of annular spigot surface, when the push rod rebound reset, the fourth spring can with the cooperation direction of annular spigot surface to make things convenient for the fourth spring to retract in the blind hole.

According to the intelligent patch board with the overload protection function, each wire core is fixed on the inner wall of the rear side of the rear shell through the plurality of wire pressing buckles; by adopting the structure, each wire core can be reliably fixed.

When the power supply is used, when the power supply is overloaded, the power supply can be automatically disconnected by the power supply, so that the purpose of overload protection can be achieved, the phenomenon that the power supply is ignited and burnt can be avoided, and potential safety hazards are eliminated.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic structural view of the plug body electrically connected to a power cord;

FIG. 3 is a schematic view of the plug body with the front cover removed and with the push rod moved upward to reset;

FIG. 4 is a schematic, partly in section, view of the plug body with the front cover removed and the push rod moved downwardly into position;

FIG. 5 is a schematic partial cross-sectional view of the plug body with the front cover removed and the push rod moved upward to reset;

FIG. 6 is a schematic view of the structure of FIG. 5 with the gears removed;

FIG. 7 is an enlarged view of the structure at A in FIG. 3;

FIG. 8 is an enlarged view of the structure at B in FIG. 3;

FIG. 9 is an enlarged view of the structure of FIG. 3 at C;

fig. 10 is an enlarged schematic view of the structure at D in fig. 3.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The intelligent patch board with the overload protection function comprises a patch board body 1 and a plug body 2, wherein the patch board body 1 is electrically connected with the plug body 2 through a power line 3, the plug body 2 comprises a rear shell 21 and a front cover plate 22, the front cover plate 22 is fixed at an opening at the front end of the rear shell 21, two conductive insertion pieces 23 penetrate through the bottom of the rear shell 21, the conductive insertion pieces 23 are fixed with the rear shell 21, and two wire cores 31 in the power line 3 are respectively and electrically connected with one conductive insertion piece 23; a push rod 4 is arranged in the rear shell 21, the push rod 4 is used for abutting against a wall socket when the patch board is overloaded so as to enable the conductive insertion pieces 23 on the plug body 2 to be separated from the wall socket, the upper end of the push rod 4 is connected with the rear shell 21 in a sliding manner, a through hole 211 is formed in the bottom of the rear shell 21 between the two conductive insertion pieces 23, and the lower end of the push rod 4 is movably inserted into the through hole 211; the rear shell 21 is provided with a first locking mechanism which is used for locking the push rod 4 after the push rod 4 moves upwards and resets, the inner wall of the rear side of the rear shell 21 is fixed with an electromagnet 5 which is used for driving the first locking mechanism to unlock the push rod 4 so that the first locking mechanism unlocks the push rod 4, the electromagnet 5 is connected with one wire core 31 in series, a driving mechanism which is used for driving the push rod 4 to move downwards after the first locking mechanism unlocks the push rod 4 is arranged between the push rod 4 and the rear shell 21, the rear shell 21 is provided with a resetting mechanism which is used for driving the push rod 4 to move upwards and reset, and the rear shell 21 is provided with a second locking mechanism which is used for preventing the push rod 4 from freely moving downwards when the resetting mechanism.

The first locking mechanism comprises a first sliding plate 61, a first clamping tooth block 611 is integrally formed on the inner end surface of the first sliding plate 61, and a first tooth groove 41 which is used for being matched and clamped with the first clamping tooth block 611 after the push rod 4 moves upwards and resets is formed in the outer wall of the push rod 4; first sliding rods 612 extending outwards are integrally formed on outer walls of two ends of the first sliding plate 61, an outer end of each first sliding rod 612 movably penetrates through one of the first supporting blocks 212 on the inner wall of the rear side of the rear shell 21 and then extends out of the corresponding first supporting block 212, each first sliding rod 612 extends out of the first supporting block 212 and then is in matched clamping connection with a first clamping spring 62, a first spring 63 used for pushing the first sliding plate 61 to enable the first clamping tooth block 611 to be in matched clamping connection with the first tooth groove 41 is sleeved outside the first sliding rod 612 between the first sliding plate 61 and each first supporting block 212, and an iron sheet 64 used for being magnetically attracted to the electromagnet 5 when the electromagnet 5 is electrified is fixed in the middle of the outer end face of the first sliding plate 61; after the first locking mechanism is adopted and the push rod moves upwards and returns, the first sliding plate can move inwards under the action of the first spring, and at the moment, the first clamping tooth block on the first sliding plate can be matched and clamped with the first tooth groove on the push rod, so that the push rod can be locked; when the wiring board is overloaded, the current in the power line and the wire core is increased, namely the current in the electromagnet is increased, so that the attraction of the electromagnet is improved, namely the electromagnet can magnetically attract the iron sheet on the first sliding plate, after the electromagnet magnetically attracts the iron sheet, the first sliding plate can overcome the elastic force of the first spring and move outwards, at the moment, the first latch block can be separated from the first tooth groove under the action of the first sliding plate, so that the push rod can be unlocked, after the push rod is unlocked, the push rod can move downwards under the action of the driving mechanism, after the push rod moves downwards, the push rod can abut against the wall socket and push the wall socket, after the wall socket is pushed, the conductive insert sheet in the plug body can be separated from the wall socket by the reactive force applied by the wall socket to the push rod, so that the wiring board can achieve the purpose of separating from the wall socket, namely, the patch board can cut off the power supply, thereby playing the function of overload protection.

The reset mechanism comprises a gear 7 which is rotationally connected on the inner wall of the rear side of the rear shell 21, a rack part 42 which is used for being meshed with the gear 7 is arranged on the outer wall of the push rod 4, a pin shaft 213 is integrally formed on the inner wall of the rear side of the rear shell 21, the gear 7 is sleeved outside the pin shaft 213 and is rotationally connected with the pin shaft 213, a boss 71 which is coaxially arranged with the gear 7 is integrally formed on the front end face of the gear 7, the boss 71 is movably arranged in the front cover plate 22 in a penetrating manner, and a cross groove 72 which is used for being matched with the end part of a cross screwdriver so as to facilitate the cross screwdriver to rotate the boss 71 and the gear 7; after the reset mechanism is adopted, when the cross screwdriver is matched with the cross groove and the gear is rotated clockwise, the gear is meshed with the rack part under the action of the gear, so that the push rod can be driven to move upwards for resetting, and compared with a mode of pushing the push rod upwards by hands, the aim of saving labor can be fulfilled.

The second locking mechanism comprises a second sliding plate 81 and a second latch block 82, a sawtooth part 43 which is matched and clamped with the inner end part of the second latch block 82 when the push rod 4 moves upwards and resets is arranged on the side wall of the push rod 4, two bolts 83 which are distributed in the vertical direction are movably arranged on the outer end part of the second latch block 82 in a penetrating mode, each bolt 83 penetrates through the second latch block 82 and then is in threaded connection with the second sliding plate 81, a second spring 84 is sleeved outside the bolt 83 between the second sliding plate 81 and the second latch block 82, and two ends of the second spring 84 are respectively abutted against the second sliding plate 81 and the second latch block 82; second sliding rods 811 extending inwards are integrally formed on the inner walls of the two ends of the second sliding plate 81, the inner end of each second sliding rod 811 movably penetrates through one of the second supporting blocks 214 on the inner wall of the rear side of the rear shell 21 and then extends out of the corresponding second supporting block 214, each second sliding rod 811 extends out of the second supporting block 214 and then is in fit and clamped with a second snap spring 85, a third spring 86 is sleeved outside the second sliding rod 811 between the second sliding plate 81 and the second supporting block 214, the two ends of the third spring 86 respectively abut against the second sliding plate 81 and the second supporting block 214, a pressing rod 812 extending in the transverse direction is integrally formed in the middle of the outer end face of the second sliding plate 81, and one end of the pressing rod 812, which is far away from the second sliding plate 81, movably penetrates through the rear shell 21 and then extends out of the rear shell 21; after the second locking mechanism is adopted, in the process that the driving mechanism drives the push rod to move upwards and reset, a user can press the press rod, after the press rod is pressed down, the press rod can drive the second sliding plate, the second sliding rod, the second clamping tooth block, the bolt and the third spring to move inwards, and after the second clamping tooth block moves inwards, the second clamping tooth block can be clamped with one of the sawtooth grooves in the sawtooth parts on the push rod in a matching way, so that the situation that the push rod freely moves downwards in the process that the driving mechanism drives the push rod to move upwards and reset can be avoided, in addition, in the state that the press rod is continuously pressed down, in the process that the push rod continuously moves upwards, when the second clamping tooth block needs to be clamped with the next sawtooth groove in the sawtooth parts in a matching way, the push rod can firstly press the second clamping tooth block, the second clamping tooth block can move outwards and compress the third spring after being pressed, and when the second clamping tooth block reaches the position of the next sawtooth groove in the sawtooth parts, the second latch piece can cooperate the joint with this sawtooth groove under the effect of third spring, so, last chucking to the push rod can be realized to the second latch piece at the in-process that the push rod lasted to shift up, and in-process second latch piece that resets that shifts up lasts at actuating mechanism drive push rod promptly can realize the lasting locking to the push rod to can avoid shifting up the in-process that resets at actuating mechanism drive push rod the circumstances that the push rod freely moved down appears.

A supporting seat 215 is integrally formed on the inner wall of the rear side of the rear shell 21, the upper end of the push rod 4 extends into the supporting seat 215 and is in sliding connection with the supporting seat 215, sliders 44 are integrally formed on the outer walls of the left side and the right side of the upper end of the push rod 4, sliding grooves 216 are formed in the left side wall and the right side wall of the supporting seat 215, and the slider 44 on each side of the push rod 4 is in sliding connection with the sliding groove 216 on the corresponding side; after adopting this kind of structure, the push rod can reliably with back casing sliding connection, and through the setting of slider and spout, can realize spacing to the circumference of push rod.

The driving mechanism comprises a fourth spring 9, a blind hole 45 with an opening at the upper end is formed in the push rod 4, the fourth spring 9 is arranged in the blind hole 45, the upper end of the fourth spring 9 abuts against the inner top of the supporting seat 215, and the lower end of the fourth spring 9 abuts against the inner bottom of the blind hole 45; after the driving mechanism is adopted, after the first locking mechanism unlocks the push rod, the push rod can move downwards under the action of the fourth spring, the push rod can abut against the wall socket and push the wall socket after moving downwards, after the wall socket is pushed, the reactive force applied to the push rod by the wall socket can enable the conductive insertion sheet in the plug body to be separated from the wall socket, so that the purpose that the patch board is separated from the wall socket can be achieved, namely, the power supply of the patch board can be disconnected, and the function of overload protection is achieved.

An annular guide surface 46 which is used for being matched with the fourth spring 9 for guiding so as to facilitate the fourth spring 9 to retract into the blind hole 45 is arranged on the inner peripheral wall of the upper end of the blind hole 45; through the setting of annular spigot surface, when the push rod rebound reset, the fourth spring can with the cooperation direction of annular spigot surface to make things convenient for the fourth spring to retract in the blind hole.

Each wire core 31 is fixed on the inner wall of the rear side of the rear shell 21 through a plurality of wire pressing buckles 32; by adopting the structure, each wire core can be reliably fixed.

When the socket is used, the socket body is matched and plugged with a wall socket, and the plug of an electric appliance is matched and plugged with the extension socket body, so that the power supply of the electric appliance can be realized by the patch board; when excessive electric appliances are plugged in the extension socket body or high-power electric appliances are plugged in the extension socket body, so that the plug board of the extension socket body has an overload phenomenon, the current in the power line and the wire core is increased, namely the current in the electromagnet is increased, so that the attraction of the electromagnet is improved, namely the electromagnet can magnetically attract the iron sheet on the first sliding plate, after the electromagnet magnetically attracts the iron sheet, the first sliding plate can overcome the elasticity of the first spring and move outwards, at the moment, the first latch block can be separated from the first tooth groove under the action of the first sliding plate, so that the unlocking of the push rod can be realized, after the push rod is unlocked, the push rod can move downwards under the action of the fourth spring (the push rod can drive the gear to rotate anticlockwise when moving downwards), after the push rod moves downwards, the push rod can abut against the wall socket and push the wall socket, after the wall socket is pushed, the reaction force applied to the push rod by the wall socket can enable the electric conduction inserting sheet, therefore, the purpose that the patch board is separated from the wall socket can be achieved, namely the patch board can be powered off, and the function of overload protection is achieved; when the patch board needs to be recovered after overload, namely when a push rod in the plug body needs to be reset, the press rod is pressed down firstly, the gear is rotated clockwise through the cross screwdriver, the push rod can move upwards continuously in the process that the gear rotates clockwise continuously, in the process that the push rod moves upwards continuously, the second latch block in the second locking mechanism can be matched and clamped with the sawtooth grooves in the sawtooth parts one by one, namely the second latch block can realize continuous locking of the push rod in the process that the gear drives the push rod to move upwards continuously and reset, so that the situation that the push rod moves downwards freely under the action of the fourth spring can be avoided, when the push rod moves upwards and a first tooth groove in the push rod reaches the position of the first latch block, the first latch block can be matched with the first tooth groove under the action of the first spring and the first sliding plate, in this way, namely, the upward moving reset of the push rod is realized.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.