阅读说明：本技术 一种便于盲人使用的安全插座组件 (Safe socket assembly convenient for blind person to use ) 是由 马捷 于 2019-11-20 设计创作，主要内容包括：本发明公开的一种便于盲人使用的安全插座组件,包括插座装置与插头装置,所述插头装置包括插头,所述插头左端电性连接有导电线,所述插头右端面设有与所述导电线电性连接的导电块,所述插座装置包括伸缩腔,所述伸缩腔右端壁安装有通电板,本发明的插座可收纳于墙体内,在使用方可移动至外界,且插座暴露于外界时处于断电状态,插孔不带电,插头与插座插接通电时,插头被锁定在插座上,使得通电安全稳定,其次,插孔的外端设有凸块,盲人可通过凸块的位置直接确认插孔位置,操作方便,此外,未使用插座或在插座使用过程中未使用的插孔均处于封闭状态,不仅防尘且具有安全防护作用,操作简便且安全性高。(The invention discloses a safe socket assembly convenient for blind people to use, which comprises a socket device and a plug device, wherein the plug device comprises a plug, the left end of the plug is electrically connected with a conductive wire, the right end face of the plug is provided with a conductive block electrically connected with the conductive wire, the socket device comprises a telescopic cavity, and the right end wall of the telescopic cavity is provided with a power-on plate. Simple operation and high safety.)

1. The utility model provides a safe socket subassembly convenient to blind person uses, includes socket device and plug device, its characterized in that: the plug device comprises a plug;

the socket device comprises a telescopic cavity, a power-on plate is mounted on the right end wall of the telescopic cavity, a socket is slidably arranged on the left side of the power-on plate, the socket can be electrically connected with the power-on plate, jacks are formed in the left end face of the socket, and a lug is arranged on the front side and the rear side of the left end of each jack, so that the blind can conveniently touch and distinguish positions;

the left side of the telescopic cavity is communicated with a closed cavity, the closed cavity is internally provided with a front and back symmetrical closed plate in a sliding manner, the closed plate is internally provided with a first protective device and a second protective device, the first protective device is positioned at the upper side position of the second protective device, the first protective device comprises a slidable first sliding plate, the upper part of the left side of the telescopic cavity can be closed when the first sliding plate is abutted, the second protective device comprises a slidable second sliding plate, the lower part of the left side of the telescopic cavity can be closed when the second sliding plate is abutted, the telescopic cavity can be integrally closed by the first sliding plate and the second sliding plate for safety protection and dust prevention, a push rod is arranged in the first sliding plate at the front side in a sliding manner, the rear end surface of the push rod is of a toothed structure, the right side position of the closed cavity at the front side is provided with a transmission device, and the transmission device comprises a transmission, thereby press right the push rod can drive gear rotates, and then for transmission works provides power, then drives socket roll-off to the external world left is convenient for the plug is pegged graft the circular telegram, it is equipped with the spread groove to communicate between closed chamber and the external world.

2. A safety receptacle assembly, as claimed in claim 1, for use by blind persons, wherein: the socket periphery is thread structure, flexible chamber rear end wall communicates with each other and is equipped with the guide way, slidable is equipped with the guide block in the guide way, the guide block front end with the socket links firmly.

3. A safety receptacle assembly, as claimed in claim 1, for use by blind persons, wherein: upside on the plug the conducting block have two and be symmetry around being, the downside on the plug the conducting block has three, on the socket the jack with the conducting block is corresponding, two from top to bottom the plug front end all is equipped with opening locking groove forward.

4. A safety receptacle assembly, as claimed in claim 1, for use by blind persons, wherein: the right end of the electrifying plate is electrically connected with an external power supply through an electrifying wire; (ii) a

The utility model discloses a socket, including circular telegram board, socket, circular telegram board left end face electrical property is installed the electric tank that connects of longitudinal symmetry, the circular telegram ware right-hand member face electrical property is installed the electric piece that connects of longitudinal symmetry, it can insert right to connect the electric piece connect in the electric tank.

5. A safety receptacle assembly, as claimed in claim 1, for use by blind persons, wherein: the upper end surface of the closing plate is of a dentate structure;

the rotary gear is characterized in that a front rotary cavity and a rear rotary cavity are symmetrically arranged in the upper end wall of the closed cavity, a rotary gear meshed with the closed plate is rotatably arranged in the rotary cavity, a first bevel gear is fixedly arranged on the left end face of the rotary gear, one end of the first bevel gear, which is close to the symmetry center, is meshed with a second bevel gear, and the front and the rear second bevel gears are fixedly connected through a connecting shaft.

6. A safety receptacle assembly, as claimed in claim 1, for use by blind persons, wherein: the first protection device comprises a first sliding groove which is symmetrical front and back;

the first sliding plate is slidably arranged in the first sliding groove, a first reset component used for resetting the first sliding plate is fixedly arranged on the upper end face of the first sliding plate, a first locking block is fixedly arranged on the rear end face of the first sliding plate on the front side and can be inserted into the locking groove in the plug on the upper side, a first groove is arranged in the front end face of the first sliding plate on the rear side, and the first locking block can extend into the first groove when the first sliding plate is abutted.

7. A safety receptacle assembly, as claimed in claim 1, for use by blind persons, wherein: the second protection device comprises a second sliding groove which is symmetrical front and back;

the second sliding plate is slidably arranged in the second sliding groove, a second resetting component used for resetting the second sliding plate is fixedly arranged on the lower end face of the second sliding plate, a second locking block is fixedly arranged on the rear end face of the second sliding plate on the front side, a second groove is formed in the front end face of the second sliding plate on the rear side, and when the front and rear second sliding plates are abutted, the rear end of the second locking block can be inserted into the second groove.

8. A safety receptacle assembly, as claimed in claim 1, for use by blind persons, wherein: a through groove is formed in the sealing plate;

the push rod slides and locates lead to the inslot, the push rod right-hand member runs through lead to the inslot extend to seal the intracavity and set firmly the solid piece, it is equipped with the spout to seal the chamber left side and external intercommunication, the push rod left end runs through it extends to the external world and sets firmly the ejector pad to lead the spout.

9. A safety receptacle assembly, as claimed in claim 1, for use by blind persons, wherein: the transmission device comprises a pressing groove communicated with the right side of the closed cavity;

a transmission cavity is formed in the rear side of the pressing groove, the transmission gear is rotatably arranged in the transmission cavity, a third bevel gear is fixedly arranged on the upper end face of the transmission gear, the right end of the third bevel gear is connected with a fourth bevel gear in a meshing manner, and a gear rotating shaft is fixedly arranged in the center of the fourth bevel gear;

the transmission chamber rear side is equipped with rotates the groove, it is equipped with the screw thread piece to rotate the inslot through the axis of rotation, screw thread piece periphery for the screw thread form and with socket periphery screw-thread fit, rotate the groove with transmission chamber right side intercommunication is equipped with the belt groove, the axis of rotation with gear shaft right-hand member all extends to just set firmly the belt pulley in the belt groove, connect through driving belt power between the belt pulley.

Technical Field

The invention relates to the technical field of electricity, in particular to a safety socket assembly convenient for blind people to use.

Background

The socket is also called as a power socket and a switch socket, the socket is a socket into which one or more circuit wiring can be inserted, and is convenient to be connected with other circuits, the conventional socket is usually fixedly installed in a wall body, jacks are exposed to the outside, when children play, fingers can stretch into the jacks with fingers, unsafe accidents can be caused by the jack driving, when the blind uses the socket, the plugs of electrical appliances are connected with the socket by touching the positions of the jacks with hands, the plugs are easily stretched into the jacks when the hands touch the socket, electricity is generated, secondly, the socket is exposed to the outside, dust is easily accumulated, the power-on stability of the socket is influenced, water is easy to enter, and the potential safety hazard of electric leakage and electric conduction exists. The present invention sets forth a device that solves the above problems.

Disclosure of Invention

The technical problem is as follows:

jacks in the existing socket assembly are exposed to the outside, potential safety hazards such as electric conduction and electric leakage are prone to occurring, and safe use by blind people is inconvenient.

In order to solve the problems, the safe socket assembly convenient for the blind to use is designed in the embodiment, the safe socket assembly convenient for the blind to use comprises a socket device and a plug device, the plug device comprises a plug, the left end of the plug is electrically connected with a conductive wire, the right end face of the plug is provided with a conductive block electrically connected with the conductive wire, the socket device comprises a telescopic cavity, the right end wall of the telescopic cavity is provided with a power-on plate, the left side of the power-on plate is provided with a socket in a sliding manner, the socket and the power-on plate can be electrically connected, so that the socket is powered on, the left end face of the socket is provided with jacks, the front side and the rear side of the left end of each jack are provided with a bump, the blind can conveniently distinguish positions by touching, the left side of the telescopic cavity is communicated with a closed cavity, the sealing plate is internally provided with a first protective device and a second protective device, the first protective device is positioned at the upper side position of the second protective device, the first protective device comprises a slidable first sliding plate, the upper part of the left side of the telescopic cavity can be sealed when the first sliding plate is abutted against the first protective device, the second protective device comprises a slidable second sliding plate, the lower part of the left side of the telescopic cavity can be sealed when the second sliding plate is abutted against the second protective device, the telescopic cavity can be sealed by the first sliding plate and the second sliding plate integrally for safety protection and dust prevention, a push rod is arranged in the first sliding plate at the front side in a slidable manner, the rear end surface of the push rod is of a tooth-shaped structure, a transmission device is arranged at the right side position of the sealed cavity at the front side, the transmission device comprises a transmission gear which can be meshed with the push rod, so that the, and then power is provided for the work of the transmission device, the socket is driven to slide out to the outside leftwards, so that the plug is convenient to be plugged and electrified, and a connecting groove is communicated between the closed cavity and the outside.

Preferably, the socket has a threaded periphery, the rear end wall of the telescopic cavity is communicated with a guide groove, a guide block is slidably arranged in the guide groove, and the front end of the guide block is fixedly connected with the socket, so that the socket can horizontally move leftwards.

Preferably, the number of the conductive blocks on the plug at the upper side is two, the conductive blocks are symmetrical front and back, the number of the conductive blocks on the plug at the lower side is three, the jacks on the socket correspond to the conductive blocks, and the front ends of the upper plug and the lower plug are respectively provided with a locking groove with an opening facing forwards.

Preferably, circular telegram board right-hand member passes through circular telegram line and external power electric connection, circular telegram board left end face electric mounting has the electric tank of longitudinal symmetry, circular telegram ware is installed to socket right-hand member face, circular telegram ware right-hand member face electric mounting has the electric piece of longitudinal symmetry, the electric piece can insert right connect in the electric tank, thereby makes the socket with circular telegram board circular telegram.

Preferably, the upper end surface of the closing plate is of a toothed structure, a rotation cavity which is symmetrical front and back is arranged in the upper end wall of the closing cavity, a rotation gear which is meshed with the closing plate is rotatably arranged in the rotation cavity, a first bevel gear is fixedly arranged on the left end surface of the rotation gear, one end, close to the symmetry center, of the first bevel gear is in meshed connection with a second bevel gear, the front and the back second bevel gears are fixedly connected through a connecting shaft, and therefore the closing plate on the front side can move to drive the closing plate on the back side to synchronously move in the reverse direction.

The first protection device comprises first sliding grooves which are symmetrical front and back, the first sliding plates are slidably arranged in the first sliding grooves, first reset components used for resetting the first sliding plates are fixedly arranged on the upper end faces of the first sliding plates, first locking blocks are fixedly arranged on the rear end faces of the first sliding plates on the front sides and can be inserted into the locking grooves in the plug on the upper side, first grooves are formed in the front end faces of the first sliding plates on the rear sides, the first locking blocks can extend into the first grooves when the first sliding plates on the front and rear sides are abutted, and therefore when the plug on the upper side is inserted into the jack on the upper side, the first locking blocks can be inserted into the locking grooves to lock the plug, and the telescopic cavity is closed through the first sliding plates.

The second protection device comprises a second sliding groove which is symmetrical in the front and back, the second sliding plate is slidably arranged in the second sliding groove, a second reset component used for resetting the second sliding plate is fixedly arranged on the lower end face of the second sliding plate, a second locking block is fixedly arranged on the rear end face of the second sliding plate on the front side, a second groove is formed in the front end face of the second sliding plate on the rear side, the rear end of the second locking block can be inserted into the second groove when the second sliding plate is abutted, so that when the plug and the jack of the lower side are inserted, the plug of the lower side is locked by the second locking block through the insertion of the locking groove on the lower side, and the telescopic cavity is closed through the second sliding plate.

Preferably, be equipped with logical groove in the closing plate, the push rod slides and locates logical inslot, the push rod right-hand member runs through logical groove extends to seal the intracavity and set firmly the solid piece, it is equipped with the spout with external intercommunication to seal the chamber left side, the push rod left end runs through the spout extends to the external world and set firmly the ejector pad, thereby stimulates forward the push rod, can drive the front and back the closing plate removes dorsad, opens flexible chamber.

Wherein, the transmission device comprises a pressing groove communicated with the right side of the closed cavity, a transmission cavity is arranged at the rear side of the pressing groove, the transmission gear is rotatably arranged in the transmission cavity, a third bevel gear is fixedly arranged on the upper end surface of the transmission gear, the right end of the third bevel gear is engaged and connected with a fourth bevel gear, a gear rotating shaft is fixedly arranged at the center of the fourth bevel gear, a rotating groove is arranged at the rear side of the transmission cavity, a threaded block is rotatably arranged in the rotating groove through a rotating shaft, the periphery of the threaded block is in a threaded shape and is in threaded fit with the periphery of the socket, a belt groove is communicated with the right side of the transmission cavity, the rotating shaft and the right end of the gear rotating shaft both extend into the belt groove and are fixedly provided with belt pulleys, the belt pulleys are in power connection through a transmission belt, so that when the push rod extends into the pressing groove, the transmission gear drives the, the socket is moved to the left to the outside for use when plugged in.

The invention has the beneficial effects that: the socket can be accommodated in a wall body, can move to the outside when used, is in a power-off state when exposed to the outside, is uncharged, and is locked on the socket when a plug is plugged into the socket and is electrified, so that the electrification is safe and stable.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

FIG. 1 is a schematic view of the overall structure of a safety socket assembly of the present invention for the blind;

FIG. 2 is a schematic view of the structure in the direction "A-A" of FIG. 1;

FIG. 3 is a schematic view of the structure in the direction "B-B" of FIG. 1;

FIG. 4 is a schematic view of the structure in the direction "C-C" of FIG. 3;

FIG. 5 is a schematic view of the structure in the direction "D-D" of FIG. 4.

Detailed Description

The invention will now be described in detail with reference to fig. 1-5, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to a safety socket component convenient for blind people to use, which is mainly used for electrifying work, and the invention is further explained by combining the attached drawings of the invention:

the invention relates to a safe socket assembly convenient for blind people to use, which comprises a socket device 90 and a plug device 89, wherein the plug device 89 comprises a plug 68, the left end of the plug 68 is electrically connected with a conducting wire 70, the right end surface of the plug 68 is provided with a conducting block 69 electrically connected with the conducting wire 70, the socket device 90 comprises a telescopic cavity 21, the right end wall of the telescopic cavity 21 is provided with a power-on plate 22, the left side of the power-on plate 22 is slidably provided with a socket 26, the socket 26 can be electrically connected with the power-on plate 22 so as to electrify the socket 26, the left end surface of the socket 26 is provided with jacks 28, the front side and the rear side of the left end of each jack 28 are provided with a lug 29 for the blind people to touch and distinguish positions, the left side of the telescopic cavity 21 is communicated with a closed cavity 30, and the closed cavity 30 is slidably provided with, a first protection device 88 and a second protection device 87 are arranged in the closing plate 31, the first protection device 88 is positioned at the upper side position of the second protection device 87, the first protection device 88 comprises a slidable first sliding plate 38, the upper part of the left side of the telescopic cavity 21 can be closed when the first sliding plate 38 is abutted against the first protection device, the second protection device 87 comprises a slidable second sliding plate 33, the lower part of the left side of the telescopic cavity 21 can be closed when the second sliding plate 33 is abutted against the first protection device, the telescopic cavity 21 can be closed integrally by the first sliding plate 38 and the second sliding plate 33 for safety protection and dust prevention, a push rod 44 is arranged in the first sliding plate 38 at the front side in a slidable manner, the rear end surface of the push rod 44 is in a toothed structure, a transmission device 86 is arranged at the right side 30 position of the closed cavity at the front side, the transmission device 86 comprises a transmission gear 54 capable of being engaged with, therefore, the push rod 44 is pressed rightwards to drive the transmission gear 54 to rotate, so as to provide power for the operation of the transmission device 86, drive the socket 26 to slide out leftwards to the outside, facilitate the plug 68 to be plugged and electrified, and the closed cavity 30 is communicated with the outside to be provided with a connecting groove 47.

Advantageously, the outer periphery of the socket 26 is a screw thread structure, the rear end wall of the telescopic cavity 21 is provided with a guide slot 49 in communication, a guide block 50 is slidably provided in the guide slot 49, and the front end of the guide block 50 is fixedly connected with the socket 26, so that the socket 26 can move horizontally leftwards.

Advantageously, there are two and symmetrical front and back conductive blocks 69 on the upper plug 68, three conductive blocks 69 on the lower plug 68, the insertion hole 28 on the socket 26 corresponds to the conductive blocks 69, and the front ends of the upper and lower plugs 68 are provided with locking grooves 41 with openings facing forward.

Beneficially, the right end of the electrifying plate 22 is electrically connected with an external power supply through an electrifying wire 23, the vertically symmetrical electrifying slots 24 are electrically installed on the left end face of the electrifying plate 22, the electrifying device 27 is installed on the right end face of the socket 26, the vertically symmetrical electrifying blocks 25 are electrically installed on the right end face of the electrifying device 27, the electrifying blocks 25 can be inserted into the electrifying slots 24 rightwards, and therefore the socket 26 and the electrifying plate 22 are electrified.

Advantageously, the upper end surface of the closing plate 31 is a toothed structure, a rotation cavity 63 which is symmetrical front and back is arranged in the upper end wall of the closing cavity 30, a rotation gear 65 which is meshed with the closing plate 31 is rotatably arranged in the rotation cavity 63, a first bevel gear 64 is fixedly arranged on the left end surface of the rotation gear 65, one end of the first bevel gear 64 close to the symmetry center is in meshed connection with a second bevel gear 66, and the front and back second bevel gears 66 are fixedly connected through a connecting shaft 67, so that the closing plate 31 on the front side can move to drive the closing plate 31 on the back side to synchronously move in the opposite direction.

According to the embodiment, the first protection device 88 will be described in detail below, the first protection device 88 includes a first sliding groove 37 symmetrical to each other in a front-to-back direction, the first sliding plate 38 is slidably disposed in the first sliding groove 37, a first returning member 39 for returning the first sliding plate 38 is fixedly disposed on an upper end surface of the first sliding plate 38, a first locking block 40 is fixedly disposed on a rear end surface of the first sliding plate 38 on a front side, the first locking block 40 is insertable into the locking groove 41 in the upper plug 68, a first groove 42 is disposed in a front end surface of the first sliding plate 38 on a rear side, when the first sliding plate 38 on the front side and the rear side are abutted, the first locking block 40 is insertable into the first groove 42, so that when the upper plug 68 is inserted into the upper plug hole 28, the first locking block 40 is insertable into the locking groove 41 to lock the plug 68, and the telescopic chamber 21 is closed by the first sliding plate 38.

In the following, the second protector 87 will be described in detail according to the embodiment, the second protector 87 includes the second sliding groove 32 which is symmetrical in front and rear, the second sliding plate 33 is slidably disposed in the second sliding groove 32, a second returning component 34 for returning the second sliding plate 33 is fixedly disposed on the lower end surface of the second sliding plate 33, a second locking block 35 is fixedly disposed on the rear end surface of the second sliding plate 33 on the front side, a second groove 36 is disposed in the front end surface of the second sliding plate 33 on the rear side, when the second sliding plates 33 on the front and rear sides are abutted, the rear end of the second locking block 35 can be inserted into the second groove 36, when the lower plug 68 is inserted into the lower socket 28, the second locking piece 35 is inserted into the lower locking groove 41 to lock the lower plug 68, and the telescopic cavity 21 is closed by the second sliding plate 33.

Beneficially, a through slot 43 is arranged in the closing plate 31, the push rod 44 is slidably arranged in the through slot 43, the right end of the push rod 44 penetrates through the through slot 43, extends into the closing chamber 30, and is fixedly provided with a fixing block 46, the left side of the closing chamber 30 is communicated with the outside, and is provided with a guide chute 48, the left end of the push rod 44 penetrates through the guide chute 48, extends to the outside, and is fixedly provided with a push block 45, so that the push rod 44 is pulled forward, the closing plate 31 can be driven to move back and forth, and the telescopic chamber 21 is opened.

According to the embodiment, the transmission device 86 is described in detail below, the transmission device 86 includes a pressing groove 51 communicated with the right side of the closed cavity 30, a transmission cavity 52 is disposed at the rear side of the pressing groove 51, the transmission gear 54 is rotatably disposed in the transmission cavity 52, a third bevel gear 55 is fixedly disposed on the upper end surface of the transmission gear 54, a fourth bevel gear 53 is connected to the right end of the third bevel gear 55 in a meshing manner, a gear rotating shaft 56 is fixedly disposed at the center of the fourth bevel gear 53, a rotating groove 60 is disposed at the rear side of the transmission cavity 52, a thread block 61 is rotatably disposed in the rotating groove 60 through a rotating shaft 62, the outer periphery of the thread block 61 is threaded and is in threaded fit with the outer periphery of the socket 26, a belt groove 59 is disposed in communication with the right side of the transmission cavity 52 in the rotating groove 60, the right ends of the rotating shaft 62 and the gear rotating shaft 56 both extend into the belt groove 59 and are, the belt pulleys 57 are in power connection through a transmission belt 58, so that when the push rod 44 extends into the pressing groove 51, the transmission gear 54 drives the thread block 61 to rotate, and the socket 26 moves leftwards to the outside for use in power plug.

The following detailed description of the steps of using a safety receptacle assembly for blind persons will be made with reference to fig. 1 to 5:

initially, the plug 68 is not inserted into the socket 26, the socket 26 is located in the telescopic cavity 21, the power receiving block 25 is inserted into the power receiving slot 24, the front and rear first sliding plates 38 abut against each other, the front and rear second sliding plates 33 abut against each other to close the telescopic cavity 21, and the front end surface of the push rod 44 abuts against the front end wall of the through slot 43.

When the telescopic cavity is used, the push rod 44 is pulled forwards to drive the front closing plate 31 to move into the front closing cavity 30, the front closing plate 31 can drive the front rotating gear 65 to rotate when moving, the rear rotating gear 65 rotates through transmission, and the rear closing plate 31 and the front closing plate 31 synchronously move backwards to open the telescopic cavity 21;

at the moment, the right end of the push rod 44 corresponds to the pressing groove 51, the push rod 44 is pressed rightwards, the transmission gear 54 rotates, the threaded block 61 is driven to rotate through the transmission belt 58, the socket 26 moves leftwards to the outside, the power connection block 25 is separated from the power connection groove 24, the power connector 27 is powered off, at the moment, the socket 26 is not electrified, the blind person can determine the position of the plug 68 through the touch bump 29, and the conductive block 69 is inserted into the jack 28;

then, the push rod 44 is pulled leftwards, so that the transmission gear 54 is reversed, the thread block 61 is reversed, the socket 26 is driven to move rightwards, the power connection block 25 is plugged with the power connection groove 24, the power connector 27 is powered on, the conductive block 69 is used for an electronic device through the conductive wire 70, then the push rod 44 is pushed backwards to reset, the closing plate 31 is driven to move close and abut, the plug 68 is plugged with the jack 28 through the conductive block 69 to be located in the first sliding groove 37 or the second sliding groove 32, the first sliding plate 38 moves close, so that the first locking block 40 is inserted into the locking groove 41, the plug 68 on the upper side is locked, and the stable power connection is guaranteed;

when the upper plug 68 or the lower plug 68 is used alone, if the upper plug 68 is plugged into the socket 26 and energized, the upper plug 68 is locked on the closing plate 31, the front and rear second sliding plates 33 are abutted, the second locking block 35 is inserted into the second groove 36, the lower part of the energizing plate 22 is closed by the second sliding plate 33, the situation that the plug hole 28 is not plugged after energization is avoided from being exposed to the outside, and the safety is improved.

The invention has the beneficial effects that: the socket can be accommodated in a wall body, can move to the outside when used, is in a power-off state when exposed to the outside, is uncharged, and is locked on the socket when a plug is plugged into the socket and is electrified, so that the electrification is safe and stable.

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.