CN112072359B

CN112072359B - Multifunctional portable socket

Info

Publication number: CN112072359B
Application number: CN202010944485.5A
Authority: CN
Inventors: 毛军玖
Original assignee: Nanjing Yuyi Communication Technology Co Ltd
Current assignee: Nanjing Yuyi Communication Technology Co Ltd
Priority date: 2020-09-10
Filing date: 2020-09-10
Publication date: 2022-05-20
Anticipated expiration: 2040-09-10
Also published as: CN112072359A

Abstract

A multi-function portable outlet plug comprising: the plug comprises a shell part, an external plug, a plug part and a socket part, wherein the shell part comprises: the socket comprises a groove A, a groove B, a plug outer shell plate, a supporting plate A, a slotted hole, a socket outer shell plate, a supporting rod, a supporting plate B, a socket hole, a plug hole A and a plug side outer shell; the external plug comprises a clamping rod, a push rod, a spring D, a joint A, a folded plate, a joint B, a fixing plate and a single plug; through the replacement of different plugs, the socket which can be suitable for different international standards is realized, and convenient charging can be better provided for international personnel; meanwhile, the miniature control circuit is arranged inside, and a more guaranteed safety conversion plug is provided for users.

Description

Multifunctional portable socket

Technical Field

The invention relates to the technical field of sockets and plugs, in particular to a multifunctional portable socket.

Background

The modern society science and technology is developed, mostly be electrical apparatus, need pass through electric drive, at this moment just need use the plug, the socket, but the standard plug that different countries used at present is different, moreover because electrical apparatus uses electric power different, the socket that requires is also different, so often take place the plug different, the plug does not correspond with the socket, the socket is with the condition such as plug size distance difference, so just need a multi-functional plug conversion socket, can change different plugs according to the demand of difference, can be according to the different distances of different voltage regulation sockets simultaneously.

Disclosure of Invention

Aiming at the problems, the invention provides the multifunctional portable socket, different plugs are replaced, the effect corresponding to different international standard sockets is realized, the miniature control circuit is arranged in the multifunctional portable socket, the power on and power off are controlled, the safer power utilization is realized, and the guarantee is provided for the personal safety.

The technical scheme adopted by the invention is as follows: a multi-function portable jack comprising: the plug comprises a shell part, an external plug, a plug part and a socket part, wherein the shell part comprises: the socket comprises a groove A, a groove B, a plug outer shell plate, a supporting plate A, a slotted hole, a socket outer shell plate, a supporting rod, a supporting plate B, a socket hole, a plug hole A and a plug side outer shell; the external plug comprises a clamping rod, a push rod, a spring D, a joint A, a folded plate, a joint B, a fixing plate and a single plug; the plug portion includes: the device comprises a button, a spring A, a screw B, a micro-electric wire groove A, a main wire groove A, a screw C, a plug hole B, a plug block, a plug support rod, a plug support block, a micro-electric wire groove B, a screw D, a main wire access groove, an electromagnet, a micro-circuit wire groove C, a spring E, a spring B, a power-on plate, a micro power-on block, a plug plate, a power-on rod and a spring C; the socket portion includes: the socket comprises a socket fixing hole, a socket wire groove, a screw G, a socket support plate, a round head and a dome block;

the groove A is fixedly arranged in the middle of the plug side shell, the three grooves B are circumferentially arrayed on the side face of the plug side shell, the plug shell plate and the socket shell plate are respectively arranged at two ends of the plug side shell, the plug shell plate and the socket shell plate are fixedly arranged above the plug side shell through screws, the supporting plate A is fixedly arranged on the side face of the plug side shell, a slotted hole is formed in the side face of the plug side shell, and the slotted hole is arranged beside the supporting plate A; the three support rods are circumferentially arrayed on the side surface in the plug side shell, the outer side ends of the support rods are fixedly arranged on the plug side shell, and the inner side ends of the support rods are fixedly connected with the plug block; the supporting plate B is fixedly arranged on the side surface in the plug side shell; the plug shell plate and the socket shell plate are respectively provided with a socket hole and a plug hole A.

Furthermore, the single plug is fixedly arranged on the fixed plate, a groove is arranged on the side surface of the fixed plate, and the clamping rod and the push rod are slidably arranged in the groove of the fixed plate; the joint A is fixedly arranged at the inner side end of the clamping rod; the spring D is fixedly arranged on the inner side face of the fixing plate and the push rod, generates elasticity and enables the push rod to move outwards, the joint B is fixedly arranged on the inner side end of the push rod, and two ends of the folded plate are rotatably arranged on the joint B and the joint A.

Furthermore, the button is slidably mounted in the slot hole, the spring A is fixedly mounted on the button, one end of the spring A is connected with the micro-electric slot A, the micro-electric slot A is fixedly mounted on the supporting plate A, and the screw B is rotatably mounted in the slot hole in the micro-electric slot A; the micro-electrifying block is fixedly arranged at the inner side end of the button, when the button is pressed down, the button drives the micro-electrifying block to move downwards, the micro-electrifying block disconnects the two groups of micro-electric wire grooves A, under the normal condition, the two groups of micro-electric wire grooves A are connected through the micro-electrifying block, and the micro-electric wire grooves A are connected with the micro-control circuit in series; the upper end of the plug block is fixedly arranged at the inner side end of the support rod, the main wire groove A is fixedly arranged on the side surface of the plug block, and the screw C is rotatably arranged in a groove hole of the main wire groove A; the plug board is slidably arranged in the square groove at the upper end of the plug block, and the electrifying rod is fixedly arranged in the plug block and below the plug board; the electrifying rod is communicated with the main wire groove A; the spring C is fixedly arranged in the square groove of the plug block, and the upper end of the spring C is fixedly connected with the plug board; the plug supporting rod is fixedly arranged on the side surface of the plug board, and the plug supporting block is fixedly arranged at the lower end of the plug supporting rod; when the plug support block is inserted into the micro-electric slot B, the micro control circuits connected to the two ends of the micro-electric slot B are connected; the micro-electric wire groove B is fixedly arranged on the side surface of the plug block, and the screw D is rotatably arranged in a groove hole of the micro-electric wire groove B; the main line access outlet groove and the main line access inlet groove are fixedly arranged on the supporting plate B; the electromagnet is fixedly arranged on the supporting plate B, and the microcircuit wire slot C is fixedly arranged on the side surface of the electromagnet; the spring B is fixedly arranged between the supporting plate B and the electrifying plate, and the electrifying plate is slidably arranged between the main line access groove and the main line exit groove; the main wire connecting groove is communicated with the three main wire grooves A, and the main wire connecting groove is communicated with the socket wire grooves; the electromagnet is connected in series with a micro control circuit through two groups of micro circuit wire slots C; when the micro control circuit is electrified, the electromagnet generates magnetic force, the electrified plate is attracted, the electrified plate moves downwards, and the main line access slot and the main line exit slot are communicated; and the spring E is fixedly arranged at the outer side end of the socket support plate.

Furthermore, one end of the socket support plate, which is fixed with the plug hole B, is slidably arranged in the groove B, and the round head is fixedly arranged at the other end of the socket support plate; the socket fixing hole is fixedly arranged in a groove on the socket support plate, the socket wire groove is fixedly arranged at the end part of the socket fixing hole, and the socket wire groove is communicated with the main wire outlet groove; the screw G is rotatably arranged in a slotted hole of a socket wire groove; the round top block is slidably arranged in the groove A.

The invention has the beneficial effects that:

the invention can be connected with various standard sockets by replacing different standard external plugs, and further can be converted into required jacks by the invention.

According to the invention, the dome block moves inwards by pressing the dome block, and the three round heads move outwards by being squeezed, so that the distances of the three socket fixing holes are adjusted, and the plug is suitable for plugs with different voltages.

According to the invention, the micro control circuit is arranged in the power supply device to control the power-on and power-off of the main circuit, so that safer power utilization is realized, and personal safety is guaranteed.

Drawings

Fig. 1 and 2 are schematic overall structures of the present invention;

fig. 3, 4, 5 and 6 are schematic views of a single plug structure of the present invention;

fig. 7, 8, 9, 10, 11 and 12 are schematic structural views of a plug mounting portion of the present invention;

fig. 13 is a schematic view of a socket part structure according to the present invention.

FIG. 14 is a circuit diagram of a micro control circuit according to the present invention.

1-a shell part; 2-external plug; 3-a plug portion; 4-a socket portion; 100-groove A; 101-groove B; 102-a plug housing plate; 103-pallet a; 104-a slot; 105-a socket housing plate; 106-strut; 107-pallet B; 108-socket holes; 109-plug aperture a; 110-plug side housing; 300-a button; 301-spring a; 302-screw B; 303-micro electric trunking a; 304-main wire slot a; 305-screw C; 306-plug hole B; 307-plug block; 308-a plug support bar; 309-plug support block; 310-micro electrical trunking B; 311-screw D; 312-main line access slot; 313-main line outlet groove; 314-an electromagnet; 315-microcircuit wireway C; 316-spring E; 317-spring B; 318-a power-on plate; 319-micro-energizing block; 320-a plug blade; 321-a power-on pole; 322-spring C; 201-clamping rod; 202-a push rod; 203-spring D; 204-linker A; 205-folding a plate; 206-linker B; 207-fixing plate; 208-single plug; 400-socket fixing holes; 401-socket wire troughs; 402-screw G; 403-a socket strip; 404-round head; 405-rounded top block.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in many ways other than those described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit of the invention, and therefore the invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12, fig. 13, and fig. 14, a multi-functional portable socket includes: the plug comprises a shell part 1, an external plug 2, a plug part 3 and a socket part 4, wherein the shell part 1 comprises: a recess a100, a recess B101, a plug housing plate 102, a blade a103, a slot 104, a socket housing plate 105, a stay 106, a blade B107, a socket hole 108, a plug hole a109, a plug-side housing 110; the external plug 2 comprises a clamping rod 201, a push rod 202, a spring D203, a joint A204, a folded plate 205, a joint B206, a fixing plate 207 and a single plug 208; the plug portion 3 includes: the micro-electric wire groove comprises a button 300, a spring A301, a screw B302, a micro-electric wire groove A303, a main electric wire groove A304, a screw C305, a plug hole B306, a plug block 307, a plug support rod 308, a plug support block 309, a micro-electric wire groove B310, a screw D311, a main wire access groove 312, a main wire access groove 313, an electromagnet 314, a micro-electric wire groove C315, a spring E316, a spring B317, an energizing plate 318, a micro-energizing block 319, a plug plate 320, an energizing rod 321 and a spring C322; the socket portion 4 includes: socket fixing hole 400, socket wire slot 401, screw G402, socket strip 403, round head 404, dome block 405;

the groove A100 is fixedly arranged in the middle of the plug side shell 110, the three grooves B101 are circumferentially arrayed on the side surface of the plug side shell 110, the plug shell plate 102 and the socket shell plate 105 are respectively arranged at two ends of the plug side shell 110, the plug shell plate 102 and the socket shell plate 105 are fixedly arranged above the plug side shell 110 through screws, the supporting plate A103 is fixedly arranged on the side surface of the plug side shell 110, the side surface of the plug side shell 110 is provided with a slotted hole 104, and the slotted hole 104 is arranged beside the supporting plate A103; three struts 106 are circumferentially arrayed on the side surface in the plug side shell 110, the outer side ends of the struts 106 are fixedly arranged on the plug side shell 110, and the inner side ends are fixedly connected with a plug block 307; the tray B107 is fixedly mounted on the side face in the plug-side housing 110; the plug housing plate 102 and the receptacle housing plate 105 are provided with a receptacle hole 108 and a plug hole a109, respectively.

In an alternative embodiment of the present invention, except for the same components as those in the previous embodiment, the single plug 208 is fixedly mounted on the fixing plate 207, a groove is formed on the side surface of the fixing plate 207, and the clamping rod 201 and the push rod 202 are slidably mounted in the groove of the fixing plate 207; the joint A204 is fixedly arranged at the inner side end of the clamping rod 201; the spring D203 is fixedly arranged on the inner side surface of the fixing plate 207 and the push rod 202, the spring D203 generates elastic force to enable the push rod 202 to move outwards, the joint B206 is fixedly arranged on the inner side end of the push rod 202, and two ends of the folded plate 205 are rotatably arranged on the joint B206 and the joint A204; when the push rod 202 is pressed into the fixing plate 207, the push rod 202 drives the joint B206 to move, and the joint B206 enables the joint a204 to move towards the joint B206 through the folded plate 205, so that the effect of shrinking the clamping rod 201 is achieved; after the push rod 202 is loosened, the push rod 202 is restored by the elastic force of the spring D203, the push rod 202 moves outward of the fixing plate 207, the joint B206 drives the flap 205 to rotate, and simultaneously drives the joint a204 to extrude the clamping rod 201 to extend outward of the fixing plate 207, so that the effect of extending out of the clamping rod 201 is achieved.

In an optional implementation manner of the embodiment of the present invention, except for the same components as those in the previous embodiment, the button 300 is slidably installed in the slot 104, the spring a301 is fixedly installed on the button 300, one end of the spring a301 is connected to the micro-electric trunking a303, the micro-electric trunking a303 is fixedly installed on the supporting plate a103, and the screw B302 is rotatably installed in the slot 104 on the micro-electric trunking a 303; the micro-electrifying block 319 is fixedly installed at the inner side end of the button 300, when the button 300 is pressed down, the button 300 drives the micro-electrifying block 319 to move downwards, the micro-electrifying block 319 disconnects the two groups of micro-electric trunking A303, under the normal condition, the two groups of micro-electric trunking A303 are connected through the micro-electrifying block 319, and the micro-electric trunking A303 is connected with a micro-control circuit in series; the upper end of the plug block 307 is fixedly arranged at the inner side end of the strut 106, the main wire groove A304 is fixedly arranged at the side surface of the plug block 307, and the screw C305 is rotatably arranged in the groove hole 104 of the main wire groove A304; the plug board 320 is slidably arranged in a square groove at the upper end of the plug block 307, and the electrifying rod 321 is fixedly arranged in the plug block 307 and below the plug board 320; the power-on pole 321 is connected with the main wire slot a 304; the spring C322 is fixedly arranged in the square groove of the plug block 307, and the upper end of the spring C322 is fixedly connected with the plug board 320; the plug support rod 308 is fixedly arranged on the side surface of the plug board 320, and the plug support block 309 is fixedly arranged at the lower end of the plug support rod 308; when the plug support 309 is inserted into the micro-electrical slot B310, the micro-control circuits connected to the two ends of the micro-electrical slot B310 are connected; the micro-electric groove B310 is fixedly arranged on the side surface of the plug block 307, and the screw D311 is rotatably arranged in the groove hole 104 of the micro-electric groove B310; the main line access slot 313 and the main line access slot 312 are fixedly arranged on the supporting plate B107; the electromagnet 314 is fixedly arranged on the supporting plate B107, and the microcircuit wire slot C315 is fixedly arranged on the side surface of the electromagnet 314; the spring B317 is fixedly arranged between the supporting plate B107 and the electrifying plate 318, and the electrifying plate 318 is slidably arranged between the main line access groove 312 and the main line output groove 313; the main wire access slot 312 is communicated with the three main wire slots A304, and the main wire access slot 313 is communicated with the socket wire slot 401; the electromagnet 314 is connected in series with the micro control circuit through two groups of micro circuit wire slots C315; when the micro control circuit is powered on, the electromagnet 314 generates magnetic force, the power-on plate 318 is attracted, the power-on plate 318 moves downwards, and the main line access groove 312 and the main line access groove 313 are connected; the spring E316 is fixedly arranged at the outer side end of the socket support plate 403; three micro-electric wire slots B310, a micro-electric wire slot A303 and a micro-circuit wire slot C315 are connected in series, and are connected in series inside to form a micro-control circuit by batteries; when the external plug 2 is mounted on the plug block 307, the plug board 320 is pressed downward to drive the plug branch block 309 to extend downward into the micro-electric trunking B310, so as to connect the micro-electric trunking B310, and meanwhile, the micro-electric trunking a303 is in a normally closed state, the electromagnet 314 generates magnetic force to attract the power board 318, so that the power board 318 moves downward to connect the main line access slot 312 and the main line access slot 313.

In an alternative implementation manner of the embodiment of the present invention, except for the same components as those in the previous embodiment, one end of the socket support plate 403 fixed with the plug hole B306 is slidably mounted in the groove B101, and the round head 404 is fixedly mounted at the other end of the socket support plate 403; socket fixing hole 400 is fixedly installed in a groove on socket support plate 403, socket wire groove 401 is fixedly installed at the end of socket fixing hole 400, and socket wire groove 401 is communicated with main wire outlet groove 313; a screw G402 is rotatably arranged in the slotted hole 104 of the socket wire groove 401; the round top block 405 is slidably arranged in the groove A100; pressing the dome block 405 moves the dome block 405 inward, pushing the three round heads 404 outward, and thus applying plugs of different voltages.

The working principle is as follows:

three micro-electric wire slots B310, a micro-electric wire slot A303 and a micro-circuit wire slot C315 are connected in series, and are connected in series inside to form a micro-control circuit by batteries; when the external plug 2 is installed on the plug block 307, the plug board 320 is pressed downwards to drive the plug branch block 309 to extend downwards into the micro-electric trunking B310, the micro-electric trunking B310 is connected, meanwhile, the micro-electric trunking a303 is in a normally closed state, the electromagnet 314 generates magnetic force, sucks the power board 318, enables the power board 318 to move downwards, and connects the main line access slot 312 and the main line access slot 313; pressing the dome block 405 to move the dome block 405 inwards and extrude the three round heads 404 to move outwards, so that plugs with different voltages are suitable; according to the sockets of different standards, the external plug 2 is replaced, the external plug 2 is installed in the plug block 307, after the external plug 2 is installed, the external plug 2 is inserted into the socket of the external plug 2 corresponding to the standard, and the distance of the socket fixing hole 400 is adjusted according to the voltage of the inserted socket, so that the plug is suitable for the plugs of different voltages corresponding to different standards.

Claims

1. A multi-functional portable jack, comprising: housing portion (1), external plug (2), plug part (3), socket part (4), housing portion (1) include: a groove A (100), a groove B (101), a plug housing plate (102), a supporting plate A (103), a slotted hole (104), a socket housing plate (105), a support rod (106), a supporting plate B (107), a socket hole (108), a plug hole A (109) and a plug side housing (110); the external plug (2) comprises a clamping rod (201), a push rod (202), a spring D (203), a joint A (204), a folded plate (205), a joint B (206), a fixing plate (207) and a single plug (208); the plug portion (3) comprises: the device comprises a button (300), a spring A (301), a screw B (302), a micro-electric wire groove A (303), a main electric wire groove A (304), a screw C (305), a plug hole B (306), a plug block (307), a plug support rod (308), a plug support block (309), a micro-electric wire groove B (310), a screw D (311), a main wire connection groove (312), a main wire connection groove (313), an electromagnet (314), a micro-circuit wire groove C (315), a spring E (316), a spring B (317), an electrifying plate (318), a micro-electrifying block (319), a plug plate (320), an electrifying rod (321) and a spring C (322); the socket portion (4) comprises: the socket comprises a socket fixing hole (400), a socket wire groove (401), a screw G (402), a socket support plate (403), a round head (404) and a dome block (405);

the groove A (100) is fixedly arranged in the middle of the plug side shell (110), three grooves B (101) are circumferentially arrayed on the side face of the plug side shell (110), a plug shell plate (102) and a socket shell plate (105) are respectively arranged at two ends of the plug side shell (110), the plug shell plate (102) and the socket shell plate (105) are fixedly arranged above the plug side shell (110) through screws, the supporting plate A (103) is fixedly arranged on the side face of the plug side shell (110), a slotted hole (104) is formed in the side face of the plug side shell (110), and the slotted hole (104) is arranged beside the supporting plate A (103); the three support rods (106) are circumferentially arrayed on the side surface in the plug side shell (110), the outer side ends of the support rods (106) are fixedly arranged on the plug side shell (110), and the inner side ends of the support rods (106) are fixedly connected with a plug block (307); a support plate B (107) is fixedly arranged on the side surface in the plug side shell (110); the plug shell plate (102) and the socket shell plate (105) are respectively provided with a socket hole (108) and a plug hole A (109);

the single plug (208) is fixedly arranged on the fixing plate (207), a groove is formed in the side face of the fixing plate (207), and the clamping rod (201) and the push rod (202) are slidably arranged in the groove of the fixing plate (207); the joint A (204) is fixedly arranged at the inner side end of the clamping rod (201); a spring D (203) is fixedly arranged on the inner side surface of the fixing plate (207) and the push rod (202), the spring D (203) generates elastic force to enable the push rod (202) to move outwards, a joint B (206) is fixedly arranged on the inner side end of the push rod (202), and two ends of a folded plate (205) are rotatably arranged on the joint B (206) and the joint A (204);

the button (300) is slidably arranged in the slot hole (104), the spring A (301) is fixedly arranged on the button (300), one end of the spring A (301) is connected with the micro-electric slot A (303), the micro-electric slot A (303) is fixedly arranged on the supporting plate A (103), and the screw B (302) is rotatably arranged in the slot hole (104) on the micro-electric slot A (303); the micro-electrifying block (319) is fixedly arranged at the inner side end of the button (300), when the button (300) is pressed down, the button (300) drives the micro-electrifying block (319) to move downwards, the micro-electrifying block (319) cuts off the two groups of micro-electric slots A (303), under normal conditions, the two groups of micro-electric slots A (303) are connected through the micro-electrifying block (319), and the micro-electric slots A (303) are connected in series to a micro-control circuit; the upper end of the plug block (307) is fixedly arranged at the inner side end of the support rod (106), the main wire groove A (304) is fixedly arranged on the side surface of the plug block (307), and the screw C (305) is rotatably arranged in the groove hole (104) of the main wire groove A (304); the plug board (320) is slidably arranged in a square groove at the upper end of the plug block (307), and the electrifying rod (321) is fixedly arranged in the plug block (307) and is arranged below the plug board (320); the electrifying rod (321) is communicated with the main wire groove A (304); the spring C (322) is fixedly arranged in the square groove of the plug block (307), and the upper end of the spring C (322) is fixedly connected with the plug board (320); the plug support rod (308) is fixedly arranged on the side surface of the plug board (320), and the plug support block (309) is fixedly arranged at the lower end of the plug support rod (308); when the plug support block (309) is inserted into the micro-electric groove B (310), the micro control circuits connected to the two ends of the micro-electric groove B (310) are connected; the micro-electric groove B (310) is fixedly arranged on the side surface of the plug block (307), and the screw D (311) is rotatably arranged in the groove hole (104) of the micro-electric groove B (310); the main line access groove (313) and the main line access groove (312) are fixedly arranged on the supporting plate B (107); the electromagnet (314) is fixedly arranged on the supporting plate B (107), and the microcircuit wire slot C (315) is fixedly arranged on the side surface of the electromagnet (314); the spring B (317) is fixedly arranged between the supporting plate B (107) and the electrifying plate (318), and the electrifying plate (318) is slidably arranged between the main line access groove (312) and the main line access groove (313); the main wire access groove (312) is communicated with the three main wire grooves A (304), and the main wire access groove (313) is communicated with the socket wire groove (401); the electromagnet (314) is connected in series with the micro control circuit through two groups of micro circuit wire slots C (315); when the micro control circuit is electrified, the electromagnet (314) generates magnetic force, the electrifying plate (318) is attracted, the electrifying plate (318) moves downwards, and the main line access groove (312) and the main line access groove (313) are connected; the spring E (316) is fixedly arranged at the outer side end of the socket support plate (403);

one end of the socket support plate (403) fixed with the plug hole B (306) is slidably arranged in the groove B (101), and the round head (404) is fixedly arranged at the other end of the socket support plate (403); the socket fixing hole (400) is fixedly arranged in a groove on the socket support plate (403), the socket wire groove (401) is fixedly arranged at the end part of the socket fixing hole (400), and the socket wire groove (401) is communicated with the main wire outlet groove (313); a screw G (402) is rotatably arranged in a slotted hole (104) of a socket wire groove (401); the dome block (405) is slidably mounted in the groove A (100).