It is interactive without spring hole scoket
Technical field
It is interactive without spring hole scoket the present invention relates to one kind.
Background technology
General socket all carries jack, even if the socket for having protection door also has a jack, protection door be located at socket cover with
Under, though there is blocking for protection door, jack is still exposed to outward, unavoidably have iron filings impurity to enter jack, and common socket is in addition
Plug is clamped using conductive metal sheet, conductive metal sheet need to make bell mouth shape, and plug is that a kind of point connects with conductive metal sheet
Touch, easily cause spark flashover, produce temperature rise, sheet metal can progressively follow the string in the case of long-time temperature rise, so as to produce
Virtual connection suspension joint, spark are continuous, resistance increases, and power consumption increases phenomenon, especially after the new GB of country's issue, it is desirable to all with guarantor
The socket for protecting door must have the function of preventing single jack to be opened, and open protection door, it is necessary to which two jacks are opened simultaneously,
Single jack does not allow to open, that is, the anti-single pressure function described in us, and the Independently-targethole-free hole-free invented before the present inventor
Though socket solves above mentioned problem, excessive used in the obvious volume of 118 sockets, protection door interference is more, and production link is relatively
It is many, and unresolved prevent single pressure problem.
The content of the invention
The present invention provides a kind of interactive without spring hole scoket, and the jack of the socket is lived by totally-enclosed protection door shield, protection door with
Socket cover is contour concordant, and from the appearance the socket is exactly a cube for sealing, without jack and slotting hole exposure, will only insert
During head socket, jack is opened automatically again using the pressing force of plug insertion pin, safety coefficient is greatly increased, and profit in socket
Pressing protection door with plug is fully pressed conductive metal sheet, is that face contacts between conductive metal sheet and plug, prevents completely
The generation of spark flashover, therefore will not produce power consumption phenomenon, be a kind of safety coefficient greatly improve it is touch-prevented, unplug-prevented
Electricity-saving type socket, the socket has prevented the generation of virtual connection suspension joint phenomenon not only without spark, and plug number of times can reach one
More than ten thousand times, it is doubled than Standard, therefore, the product is bought, the service life of several common sockets can be pushed up, together
When, solving Independently-targethole-free hole-free socket technical requirements high precision, cost is big, the problems such as assembling is difficult, especially solves and point leads
Anti- single pressure problem of the formula without spring hole scoket.
The technical solution adopted for the present invention to solve the technical problems is:Pressing using plug to protection door, makes protection
The various devices of the lower institute's band of door can carry out interaction, it is produced the motion of the various modes such as pull, rotation, movement, and make its
Single insertion hole protection door can have anti-single pressure function when pushing, but also conductive copper sheet need to be compressed, and pull the plug out of the socket, using spring energy
Protection door and its various mechanisms of inside are made to carry out return.
The beneficial effects of the invention are as follows;After said structure, the jack of socket is in full closeding state, from appearance
In non-porous state, security performance is greatly improved, and will not produce virtual connection and suspension joint phenomenon.Socket is it also avoid simultaneously with long afterwards
Jack relaxes, and constantly, socket heating, resistance increase, power consumption increases spark flashover, and jack exposing phenomenon bad with Plug contact
Generation, so as to reach the purpose of economize on electricity.
The present invention includes:Housing, active conductive piece mounting device, fixed-conductive film mounting bracket, protection door gear, anti-single pressure
Device, it is characterized in that:Described housing is made up of socket cover, socket base;Described active conductive piece mounting device includes:Take out
Pulling box, moving rotary frame, sliding seat, spring;Described protection door gear includes:Protection door, driving lever, inclined-plane, protection door-hinge;Institute
The anti-single pressure device stated includes:Anti- single pressure sliding block, interlock plate, spring, anti-single pressure inclined-plane.Wherein, protection door is installed on housing
Axle, installs protection door and driving lever on protection door-hinge, anti-single briquetting is also installed on protection door-hinge, and inclined-plane is opened on anti-single briquetting,
Drawing box is sleeved on installs conductive copper sheet in the fixed-conductive film mounting bracket both sides in socket, drawing box, in order to adapt to each state
Requirement of the family to plug shape, conductive copper sheet can make the profiled shape for adapting to every country application, the length on drawing box top
It is short, so that when the protection door of side is pressed, anti-single pressure inclined-plane can just be pressed onto drawing box top, and two protection doors are pressed simultaneously
When, anti-single pressure inclined-plane can just be pressed and is advisable less than drawing box top again, and the driving lever on protection door-hinge connects with drawing box driving lever inclined-plane
Connect, one end of drawing box is connected with spring, the other end of spring is arranged on can make spring play any one of reset effect effect
On point, plug presses protection door when using, and protection door-hinge drives driving lever rotation, driving lever by drawing box inclined-plane drive drawing box to
After move, jack is opened, and plug may be inserted into, and the drawing box that gos deep into plug continues to be moved rearwards by, when plug is fully-inserted
During socket, the special-shaped copper piece on drawing box compresses latch;Pull the plug out of the socket, drawing box will protect door jack-up, protection by spring
Door and drawing box reset, and when such as single jack is pushed, anti-single pressure inclined-plane will be pressed on the not mobile drawing box of opposite side and push up
On end, single one of jack of pressure is played, the effect that protection door is not opened, only two protection doors are pushed simultaneously, two pulls
The top of box is simultaneously mobile, and anti-single pressure inclined-plane of both sides is all pressed and could opened less than drawing box.
Second method be, the installation activity seat inside socket, and installation activity conducting strip in sliding seat, sliding seat can horizontal sliding
Mobile, inclined-plane is opened in the both sides of sliding seat, and sliding seat is connected with spring, in the state of no-pin plug, usually in opened condition,
Below protection door, then an inclined-plane is set, on the housing of the both sides that moved ahead when sliding seat is translated, anti-single pressure draw-in groove is installed, insert
Behind the door, protection door inclined-plane pressing sliding seat inclined-plane makes sliding seat translate forward, pulls the plug out of the socket, bullet for head insertion jack pressing protection
Spring makes sliding seat return again, but during single pressure side protection door, and sliding seat can only outer side shifting forward, it is impossible to parallel reach, movable
One end of seat is just snapped in anti-single pressure draw-in groove, and protection door can not be pressed, therefore realizes the purpose of anti-single pressure, and the method is to two cores or three
Core socket is effective, is tested through actual production, and three core sockets are more preferably used.
But the plug shape and national standard of various countries are different, and some plug shape above methods use shared
Area is larger, therefore, we devise another interactive approach again, are exactly the third method, and vertical shaft is installed on Socket casing,
Rotatable adjustable shelf is installed on vertical shaft, spring is installed on the vertical shaft of rotary moveable frame, pressing protection door, driving lever is stirred rotation and lived
Moving frame, it is interactive to form rotation, pulls the plug out of the socket, and vertical shaft spring again rebounds resets rotary moveable frame, the side of rotary moveable frame and
The inclined-plane connection of anti-single pressure sliding block, the top of anti-single pressure sliding block is flexibly connected with fixed-conductive film mounting bracket, in the present embodiment,
It is anti-single pressure sliding block tail end and spring in the sulculus of top insertion fixed-conductive film mounting bracket, to prevent top to two side shiftings
Connection, on the housing of the bottom of the both sides of anti-single pressure sliding block, sets buckle, is to utilize three in the present embodiment actual production
Core is grounded conducting strip mounting bracket to serve as buckle, presses plug, and driving lever stirs the rotary moveable frame rotation on vertical shaft, two rotations
Adjustable shelf side promotes anti-single pressure sliding block to be moved rearwards by simultaneously, pulls the plug out of the socket, and anti-single pressure sliding block is pushed back reset by spring, meanwhile,
Vertical shaft spring rebounds reset rotary moveable frame, and protection door is shared again, but individually by it is next protect door when, rotary moveable frame
Side pushes anti-single pressure slider tail to another side, and anti-single pressure sliding block is just stuck on buckle, it is impossible to slided backward, so as to play
The effect of anti-single pressure.
But for the three-prong plug of protection with ground, the plug shape and national standard of various countries are different, are inserted
Pin have triangle, have parallel, also square hole, ground protection hole is also made a world of difference, have it is round, have flat, it is also square, be
The standard of every country can be preferably adapted to, we devise the 4th kind of scheme, are exactly installed additional in the side of three cores protection door
Driving lever, driving lever is arranged on driving lever plate, and pressing protection door can drive driving lever to stir swivel mount tail, and form rotation interaction, rotation
The jack top of pivoted frame, installs interlock plate additional under three cores protection door, interlock plate is arranged on ground protection door lower end, under ground protection door
Gangbar is installed, the ground connection contact pin of three-prong plug is generally more long than conductive pin, plug insertion jack when using should be first by being grounded
Protection door is pushed, and the gangbar of ground protection door lower end will drive interlock plate forward, so as to open jack, plug just can be inserted
Enter, when such as individually wanting to open any one conductive jack, because interlock plate gear is above jack, single pressure protection door is not opened,
So as to play the effect of anti-single pressure.
However, in China, also a kind of socket is 118 series, 118 series of receptacles housings are too small, the core of the above method three
Socket can use, but two core sockets just seem crowded in aforementioned manners, therefore.We devise fifth method and carry out specific adaptation again
118 sockets, our scheme is that a moveable seat is placed in 118 socket boxes, in the shell that sliding seat is moved forward
Anti- single pressure buckle is installed on body both sides, above sliding seat, inclined-plane is opened in the place being connected with protection door driving lever, the inclined-plane is divided into again
Two parts, one is, in pressing protection door, to translate forward inclined-plane forward in the presence of driving lever, and another inclined-plane is that anti-single pressure is oblique
Face, driving lever protects door with anti-list pressure contact of incline plane, such as single pressure side first, and driving lever can push sliding seat to side, and make activity
Seat is stuck on buckle and can not move forward, and sliding seat is connected with spring, and conducting strip mounting groove can be opened in sliding seat, and plug is pressed when using
Protection door, driving lever will drive sliding seat to move forward, and pull the plug out of the socket, and spring again pops into position sliding seat, and will protect door bullet
Rise, but as when individually door is protected in pressing one, driving lever is anti-single pressure inclined-plane by what is first contacted, and anti-single pressure inclined-plane will make sliding seat
Moved to side, whole sliding seat will be blocked and can not moved ahead by anti-single pressure buckle of side, so as to realize the purpose of anti-single pressure.
Realizing the mode of 118 serial three cores jack non-porousization has several kinds, but in actual production, we are with the present invention
In second method move sliding seat, and come anti-single pressure, but I using the anti-single pressure interlock plate of the 4th kind in the present invention
Installed anti-single briquetting additional on interlock plate, protection door is pressed against on anti-single briquetting, as long as the distance of the mobile very little of interlock plate, protects
Shield door is separated from anti-single briquetting can be depressed, the purpose for the arrangement is that anti-single pressure effect is more preferable.
In fact, in the framework of general idea of the present invention, various methods can be used in conjunction with one another, outward appearance can be played
It is non-porous, can be interactive when pressing plug, and its is clamped plug, it is difficult to release, effect this purpose of also anti-single pressure.
After taking above method, receptacle sockets are in non-porous state, and jack is blocked completely, and safety measure is greatly enhanced,
And plug is injected and is automatically locked after protection door gear and the interaction of active conductive piece mounting device after jack, plug at this moment is slotting
Instead pin is changed into chock, does not pull the plug out of the socket, and will not loosen, therefore, be not in suspension joint virtual connection phenomenon, spark is reduced, also will not
Oxide layer is formed on sheet metal, hole is dangerous so as to overcome common socket to reveal, and resistance increases after there is suspension joint virtual connection phenomenon,
China whole people are economized on electricity by the increased shortcoming of power consumption, have significant realistic meaning into energy-saving low-carbon society.
Brief description of the drawings
Fig. 1 is the socket base uncapping assembling figure of the embodiment of the present invention 1.
Fig. 2 is the protection door three-dimensional effect diagram of the embodiment of the present invention 1.
Fig. 3 is the drawing box three-dimensional effect diagram of the embodiment of the present invention 1.
Fig. 4 is the sliding seat of the embodiment of the present invention 2 and protection door uncapping assembling top view.
Fig. 5 is the protection door three-dimensional effect diagram of the embodiment of the present invention 2.
Fig. 6 is to assemble top view after the uncapping of the embodiment of the present invention 3.
Fig. 7 is to assemble top view after the uncapping of the embodiment of the present invention 4.
Fig. 8 is the interlock plate stereogram of the embodiment of the present invention 4.
Fig. 9 is the ground protection of the embodiment of the present invention 4 door stereogram.
Figure 10 is the core of the embodiment of the present invention 4 three protection door stereogram.
Figure 11 is assembling stereogram after the uncapping of the embodiment of the present invention 5.
Figure 12 is the sliding seat stereogram of the embodiment of the present invention 5.
Figure 13 is the uncapping assembling stereogram of the embodiment of the present invention 6.
Figure 14 is three-dimensional assembly diagram after the uncapping of the embodiment of the present invention 6 and interlock plate.
In above-mentioned figure
1st, housing 2, drawing box spring, 3, surface groove 4, drawing box inclined-plane 5, protection door-hinge 6, driving lever 7, anti-single pressure
Block 8, protection door 9, the fixed-conductive film mounting bracket of drawing box 10,11 fixed-conductive film mounting grooves 12, drawing box top 13,
Anti- single pressure inclined-plane 14, slot to make way 15, escape groove 16, special-shaped conducting strip 17, three cores protection door 18, protection door inclined-plane 19,
Sliding seat 20, sliding seat spring 21, sliding seat conducting strip mounting groove 22, sliding seat inclined-plane 23, buckle 24, three cores are fixed
Conducting strip mounting bracket 25, fixed-conductive film mounting groove 26, rotary moveable frame 27, vertical shaft 28, conducting strip mounting hole 29, cunning
Block inclined-plane 30, sulculus 31, anti-single pressure sliding block drift angle 32, swivel mount spring 33, anti-single pressure sliding block 34, swivel mount slide block
35th, swivel mount side 36, sliding block spring 37, spring base 38, buckle 39, interlock plate 40, spring groove 41, interlock plate inclined-plane
42nd, 44, three core fixed-conductive film framves 45 of gangbar 43, ground protection door, three core swivel mounts 46, three core swivel mount springs
47th, three core swivel mount vertical shafts 48, swivel mount tail 49, driving lever 50, driving lever plate 51, sliding seat translation inclined-plane 52, buckle 53,
The anti-single pressure inclined-plane 54 of sliding seat, dividing plate 55, movable conducting strip mounting groove 56, the anti-single briquetting 58 of spring groove 57, interlock plate,
Interlock plate spring groove 59, gearing flat spring 60, sliding seat draw-in groove
Specific embodiment
With reference to embodiment and its brief description of the drawings detailed construction of the invention, but the present invention is not limited to following implementations
Example, the various combinations in design framework of the invention are implemented, within effective protection domain.
Fig. 1 describes a kind of interactive without spring hole scoket, and the present invention includes:Housing 1, active conductive piece mounting device, guarantor
Shield door gear, anti-single pressure device, described housing 1, it is made up of socket cover, socket base, described movable conducting strip installs dress
Put including:Drawing box 9, moving rotary frame 26, sliding seat 19, spring 20, described protection door gear includes, protection door 8, three cores
Protection door 17, driving lever 6, inclined-plane 18, protection door-hinge 5, described anti-single pressure device includes, anti-single pressure sliding block 33, interlock plate 39, card
Button 38, gearing flat spring 59, anti-single pressure inclined-plane 22,53, it is characterized in that:Protection door-hinge 5 is installed on housing 1, on protection door-hinge 5
Protection door 8 and driving lever 6 are installed, anti-single briquetting 7 are also installed on protection door-hinge 5, inclined-plane 13 (see Fig. 2) is opened on anti-single briquetting 7,
The both sides of fixed-conductive film mounting bracket 10 of the drawing box 9 in socket, install conductive copper sheet 16, for both sides in drawing box 9
The conducting strip 16 in folding of drawing box 9 is non-interference, and escape groove 15 is opened on drawing box 9, in order to adapt to every country to plug shape
The requirement of shape, conductive copper sheet 16 can make the profiled shape (see Fig. 3) for adapting to every country application, the length on drawing box top 12
It is short, so that when the protection door 8 of side is pressed, anti-single pressure inclined-plane 13 can just be pressed onto drawing box top 12, and two protection doors are same
When pressing, anti-single pressure inclined-plane 13 just presses the not top of falling drawing box 12 to be advisable again, protects driving lever 6 and drawing box on door-hinge 5
Inclined-plane 4 is connected, and one end of drawing box 9 is connected with spring 2, and the other end of spring 2 is arranged on can make spring 2 play reset effect effect
Arbitrfary point on, when using plug press protection door 8, protection door-hinge 5 drive driving lever 6 rotate, driving lever 6 pass through drawing box inclined-plane 4
Drawing box 9 is driven to be moved rearwards by, at this moment jack is opened, plug may be inserted into, pull the plug out of the socket, drawing box 9 passes through spring 2 by pull
Box resets, and by the jack-up of drawing box inclined-plane 4, protection door 8 sets back protection door 8, when such as single jack is pushed, anti-single pressure inclined-plane 13
Will be pressed on the not mobile drawing box top 12 of opposite side, play single one of jack of pressure, protection door 8 is not opened
Effect, only two protection doors 8 are pushed simultaneously, and two drawing box tops 12 are simultaneously mobile, and anti-single pressure inclined-plane 13 of both sides is all pressed
Could be opened less than drawing box top 12, in actual production, in order to easy mold and assembling are convenient for production, also for protection door
8 stabilizations combined with jack sealing, housing 1 divide into two parts again, and the above is lid, and lid is lower and fixation has been installed one layer additional and added
Plate, fixed installation protection door 8 is relatively stable on the accessories plate, but it is considered that this layer of add-in card also belongs to the one of Socket casing
Part, though embodied not in claim, also within the effective protection domain of housing, special declaration herein.
The embodiment of the present invention 2 is shown in Fig. 4, and installation activity seat 19, opens active conductive film trap in Socket casing 1 in sliding seat 19
21, sliding seat 19 can horizontal sliding movement, the both sides of sliding seat 19 open inclined-plane 22, and sliding seat 19 is connected with sliding seat spring 20, not
Insert in the state of plug, usually in opened condition, below protection door 17, then an inclined-plane 18 (see Fig. 5) is set, in sliding seat 19
Moved ahead on two side bodies 1 during translation, anti-single pressure buckle 23 is installed, after plug insertion jack pressing protection door 17, protect door inclined-plane
18 pressing sliding seat inclined-planes 22, make sliding seat 19 translate forward, pull the plug out of the socket, and spring 2 makes the return of sliding seat 19 again, and will protection
17 jack-up of door return to original position, but during single pressure side protection door 17, and sliding seat 19 can only outer side shifting forward, it is impossible to parallel reach,
One end of sliding seat 19 is just snapped in anti-single pressure buckle 23, and protection door 17 presses motionless, thus realizes the purpose of anti-single pressure, should
Method is tested through actual production, effective to two cores or three core sockets, but three core sockets are more preferably used.
The embodiment of the present invention 3 is shown in Fig. 6, and vertical shaft 27 is installed on socket inner housing 1, and rotary moveable frame is installed on vertical shaft 27
26, install swivel mount slide block 34 on rotary moveable frame 26 additional, install and swivel mount spring is installed on the vertical shaft 27 of rotary moveable frame 26
32, driving lever 6 is connected with swivel mount slide block 34, plug pressing protection door 8, and driving lever 6 can stir swivel mount slide block 34 makes rotation
It is interactive that adjustable shelf 26 forms rotation, pulls the plug out of the socket, and vertical shaft spring 32 again rebounds resets rotary moveable frame 26, in two rotation work
The centre position of moving frame 26, installs anti-single pressure sliding block 33, and swivel mount side 35 is connected with anti-single pressure sliding block inclined-plane 29, and anti-single pressure is slided
Block top 31 should be able to be advisable so that anti-single pressure sliding block top 31 can be made to rotate installation, be in fixed-conductive film peace in the present embodiment
A sulculus 30 is opened in the lower end for shelving 10, and anti-single pressure sliding block top 31 inserts sulculus to realize, to prevent anti-single pressure sliding block top
31 to two side shiftings, and anti-single pressure tail end of sliding block 31 is connected with sliding block spring 36, the other end of sliding block spring 36 be arranged on housing 1
On spring base 37 connect, on the housing 1 of anti-single pressure sliding block 31 bottom both sides, anti-single pressure buckle 38 is set, in the present embodiment
It is to be grounded conducting strip mounting bracket using three cores to serve as spring base 37 and anti-single pressure buckle 38 in actual production, presses plug, dials
Bar 6 rotates the rotary moveable frame 26 on vertical shaft 27, and two swivel mount sides 35 of rotary moveable frame 26 promote anti-single pressure simultaneously
Two inclined-planes 29 of the sliding block of sliding block 33 are moved rearwards by, and pull the plug out of the socket, and anti-single pressure sliding block 33 is pushed back reset by sliding block spring 36, together
When, vertical shaft spring 32 rebounds reset rotary moveable frame 26, and protection door 8 is shared again, but when individually by next protection door 8, rotation
To another side is pushed anti-single pressure sliding block 33 in the swivel mount side 35 for turning a work moving frame 26, and anti-single pressure sliding block 33 is just stuck in buckle 38
On, it is impossible to slide backward, so as to play the effect of anti-single pressure.
The embodiment of the present invention 4 is shown in Fig. 7, and the present embodiment is designed exclusively for the three-prong plug of protection with ground, and its method is:
Below three cores protection door 17, above swivel mount 45, interlock plate 39 is installed, installs spring base 40, interlock plate on interlock plate additional
The place contacted with the trace 42 above protection door ground protection door 43, opens inclined-plane 41, when being pushed so as to ground protection door 43
Smoothness (see Fig. 8), interlock plate 39 by ground protection door 43 control, ground protection door 43 lower end, install gangbar 42 (see figure
9), driving lever 49 is installed additional in the side of three cores protection door 17, driving lever 49 is arranged on (see Figure 10), interlock plate under normality on driving lever plate 50
Below the three cores protection door 17, it is that by motionless, general three-prong plug connects singly to press one of them three core to protect door 17 to 39 gears
Ground contact pin is more long than conductive pin, plug insertion jack when using, and first should be pushed by ground protection door 43, under ground protection door 43
The gangbar 42 at end will drive interlock plate 39 forward, so that three cores protection door 17 does not stop below, and then can open slotting
Hole, plug just can be inserted, and at this moment three cores protection door 17 can drive driving lever 49 to stir swivel mount tail 48, and form rotation interaction,
Anti- single pressure effect can be so played again, and does not influence swivel mount to compress plug.
The embodiment of the present invention 5 is shown in Figure 11, and the embodiment is customized exclusively for 118 sockets are adapted to, and its method is:In socket shell
Sliding seat 19 is installed additional in body 1, in the both sides of housing 1 that sliding seat 19 is moved forward, buckle 52 is installed, above sliding seat 19, with
Inclined-plane 51 is opened in the place of the connection of driving lever 6, and the inclined-plane 51 is divided into two parts again, and one is in pressing protection door 8, in the power of driving lever 6
Forward inclined-plane 51 is translated under effect forward, another inclined-plane is anti-single pressure inclined-plane 53 (see Figure 12), and sliding seat 19 connects with spring 20
Connect, conducting strip mounting groove 55 can be opened in sliding seat 19, plug presses protection door 8 when using, driving lever 6 will drive sliding seat 19 forward
It is mobile, pull the plug out of the socket, spring 20 again pops into position sliding seat 19, and by driving lever 6 door 8 will be protected to upspring, but such as solely pressing
During one protection door 8, driving lever 6 is contacted with anti-single pressure inclined-plane 53 first, and driving lever 6 can push sliding seat 19 to side, and make activity
Seat 19 is stuck on buckle 52 and can not move forward, so as to realize the purpose of anti-single pressure.
The embodiment of the present invention 6 is shown in Figure 13, and the present embodiment is to aim at 118 serial three cores socket designs, but in actual production,
We are to move sliding seat 19 with the embodiment two in the present invention, and use anti-single pressure gearing of embodiment 4 in the present invention
Plate 39 carrys out anti-single pressure, and sliding seat 19 is placed in draw-in groove 60, has installed anti-single briquetting 57, three cores protection door 17 additional on interlock plate 39
It is pressed on anti-single briquetting 57, as long as the distance of the mobile very little of interlock plate 39, three cores protection door 17 is separated from anti-single briquetting 57 can
Pressure, the purpose for the arrangement is that anti-single pressure effect is more preferably,
After so designing, socket just possesses anti-single pressure function, and volume significantly reduces, and 118 sockets is also implemented non-porous
Change, after all advantages for inheriting Independently-targethole-free hole-free socket, and overcome the element precision requirement of Independently-targethole-free hole-free socket again
Higher, protection door interferes more, the relatively large number of shortcoming of production link, makes to be more easy to production without spring hole scoket, and China whole people are economized on electricity,
There is significant realistic meaning into energy-saving low-carbon society.