A kind of solar photovoltaic assembly and its installation methodTechnical field
The present invention relates to field of solar energy, in particular to a kind of solar photovoltaic assembly and its installation method.
Background technique
With the rise of energy prices, developing and using new energy becomes the major subjects of current energy field research.Due toSolar energy have many advantages, such as it is pollution-free, without region limitation, it is inexhaustible, research solar power generation become development and utilization new energyMain way.It is a kind of major way that current people use solar energy using solar cell power generation, solar energy needs account forWith places such as a large amount of soil roofings, therefore the product that solar components are combined with roof tiles is more universal, but currentThe design of roof tiles component faces high-cost short slab, does not obtain a large amount of application.
If roof tiles photovoltaic module is thought directly to substitute deck structure, it is desirable to which its waterproof ability can satisfy substantially outdoorWind and snow natural conditions will also meet the generating capacity that can continue.Practical current photovoltaic module roof is in terms of sealing structureIt is very unsatisfactory, it is not applied for requiring stringent watertight occasion, and it is only suitable for the occasions such as aquaculture/planting/herding, while also faceThe risk for facing the anti-crack failure of installation and the later maintenance of component, using the anti-crack energy of common back board module technique componentPower is weak, and hot spot risk is aggravated after crack, and failure risk further expands；In conventional small roof tiles component design,Face problem difficult to install, how Fast Installation and to facilitate the maintenance in later period be also challenge.
Conventional solar cell piece predominant crystal silicon includes polycrystalline/Monocrystalline silicon cell piece component, but conventional cell piece groupThe characteristics of part is because of crystalline silicon brittleness, faces the problem of anti-crack ability difference after packaging, easily leads to subsequent crack line electric currentIt collects less than phenomena such as hot spot, local high current high temperature occurs in formation current convergence, is formed to the encapsulating material of component seriousFailure risk.Market also started the double glass of gradually development and application in recent years, but the design overwhelming majority of double glass is all Rimless, and nothingThe double glass of frame are not because surrounding is protected, and causing edge to be easy touching causes plate bursting to be failed, and installation is also difficult, but in anti-crackOvercome completely, no crack may be implemented.Monthly exploitation widely applies conventional frame also in that frame is in addition to electricity in the marketMost expensive material except the piece of pond, cost factor lead to double glass applications of Market Selection Rimless.But the crack short slab of single glass component,The easy plate bursting of double glass and difficult to install, these are not optimal products applications.
In addition, also facing the presence of the internal stress of surrounding, internal stress is in current Rimless solar double-glass assemblies applicationCaused by the lamination heating process process of current component, the long-term potential risk for thering is edge to tilt using four side of solar double-glass assemblies.With prolonged outdoor application, external moisture still has an opportunity to invade inside, and especially water surface solar double-glass assemblies are applied and just facedSteam penetrates the risk at edge, this high-performance holding lasting to the surface oxidation and cell piece of cell piece just has challenge, rightLong-term commitment to quality is it is also proposed that risk.
The corresponding mounting means of the current design of general components mainly has front briquetting and the fixed both of which of back side screw,Screw fixation in the back side is durable but inconvenient；And front briquetting actually encounters a lot of components when being mounted on typhoon regionBecause briquetting loosens, component string square matrix is caused to loosen comprehensively, component flies out the phenomenon that damaging.
It is currently mostly using double for current double-side cell piece electrification component, including the two-sided and heterogeneous structure, assembly of N-typeThe double glass structures in face also relate on mounting means and how to evade the back side and block, and can satisfy normal load mechanical performance,Conventional briquetting mounting means bearing capacity in terms of the anti-crushing by snow of Wind-Pressure Resistance is not high.There are briquetting edge support surfaces for component notEnough, there are the back sides risks such as to block.
Summary of the invention
In order to solve problems in the prior art, the present invention provides a kind of solar photovoltaic assembly and its installation method, skillsArt scheme is as follows:
On the one hand, the present invention provides the first bindiny mechanisms between a kind of solar energy layer casting die, for connecting two blocks of solar energyLaminate, first bindiny mechanism include the first frame and the second frame of strip, and it is recessed that first frame is equipped with firstSlot and cover board, second frame are equipped with the second groove, and first frame connects cooperation with the second frame, and described first is recessedSlot and the second groove are respectively used to accommodate the side edge of adjacent two pieces of laminates, and the outer of the cover board covers the portion of the second frameDivide upper surface or whole upper surfaces.
Further, the lower section of the cover board is equipped with clamping portion, is additionally provided on second frame and matches with the clamping portionThe third groove of conjunction, first frame and the second frame are engaged by clamping by clamping portion and third groove.
On the other hand, the present invention provides the second bindiny mechanisms between a kind of solar energy layer casting die, for connecting two pieces of sunEnergy laminate, second bindiny mechanism includes the third side of the first connector, the second connector, card briquetting and two stripsFrame, the third frame are equipped with the 4th groove of horizontal direction opening and the 5th groove of opening upwards, two third framesThe 4th groove be respectively used to accommodate the side edge of adjacent two pieces of laminates, the of two third frames is arranged in the card briquettingIn five grooves, first connector, the second connector are fixedly connected up and down, and it is recessed that the card briquetting is pressed on the described 5thIn slot.
Further, first connector is bolt, and second connector is nut, and the bindiny mechanism further includesThe inner wall relative limit of drain tank, the nut and drain tank connects, and the 6th that Open Side Down is additionally provided on the third frameGroove is connected by the bolts and nuts, and the two sides cell wall of the drain tank is separately mounted to the 6th of two third frames theIn groove；
Alternatively, second bindiny mechanism further includes water-proof strip, the water-proof strip is covered on the part of two third framesSurface or whole upper surfaces.
On the other hand, the present invention provides a kind of solar photovoltaic assemblies, including laminate, the first connection as described aboveMechanism or the second bindiny mechanism as described above.
On the other hand, the present invention provides a kind of solar photovoltaic assemblies, including laminate, the first connection as described aboveMechanism and the second bindiny mechanism as described above.
Further, the upper side of the laminate is equipped with the second frame, and downside is equipped with the first frame, left sideIt is mounted on third frame with right side, it is fixed and close between the laminate and the first groove, the second groove and the 4th grooveEnvelope connection.
Further, the side of the laminate is equipped with frame, and the frame includes the first frame, the second frame and theThree frames, adjacent frame junction bolt are bonded or are overlapped using L-type corner brace.
Further, the solar photovoltaic assembly is double glass photovoltaic modulies, and the seal ring thickness of the photovoltaic module is lower than20mm。
In another aspect, connecting the present invention provides a kind of solar photovoltaic assembly installation method using as described above firstConnection mechanism and the second bindiny mechanism as described above, which are attached between installation, including upper and lower two pieces of laminates laminate, leads toThe connection installation of the first bindiny mechanism is crossed, passes through the connection installation of the second bindiny mechanism between the two pieces of laminates in left and right.
Technical solution bring provided by the invention has the beneficial effect that:
1) the characteristics of present invention is tilted according to component installation height snaps into lower section using the cover board extension on the first frameOn second frame of photovoltaic module, water-proof function is realized, the Fast Installation of photovoltaic module is realized using buckle-type；
2) frame between the laminate of two left-right situs realizes Fast Installation using card briquetting mode, prevents each componentBetween misplace sliding, avoiding single component from being fitted without securely causes all components to loosen, and improves the reliability of installation；
3) water-proof strip is used between adjacent component left and right side frame, realization blocks water water-proof function, while increasing that integral type is U-shaped to let outSink further increases waterproofing grade；
4) for no waterproof requirement component, laminate four edges use third frame to combine, save the cost；
5) super-thin frame is used, realizes low-cost and high-performance, and fit entirely into the big component of conventional photovoltaic in size, it is non-Often suitable industrialization and scale；
6) border structure provided by the invention can be applied to double-side cell piece electrification component, in the premise evading the back side and blockingUnder, and can satisfy normal load mechanical performance.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodimentAttached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, forFor those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings otherAttached drawing.
Fig. 1 is the mounting structure schematic diagram of solar photovoltaic assembly provided in an embodiment of the present invention；
Fig. 2 is two neighbouring laminate frame bridging arrangement schematic diagrames provided in an embodiment of the present invention；
Fig. 3 is the cross-sectional view of the first frame provided in an embodiment of the present invention；
Fig. 4 is the cross-sectional view of the second frame provided in an embodiment of the present invention；
Fig. 5 is the cross-sectional view of the first frame provided in an embodiment of the present invention with barb；
Fig. 6 is the schematic cross-sectional view of third frame provided in an embodiment of the present invention；
Fig. 7 is the card briquetting attachment structure schematic diagram between third frame provided in an embodiment of the present invention；
Fig. 8 is the water-proof strip mounting structure schematic diagram between third frame provided in an embodiment of the present invention；
Fig. 9 is the structural schematic diagram of L-type corner brace provided in an embodiment of the present invention；
Figure 10 is the fixed installation cross-sectional view of L-type corner brace provided in an embodiment of the present invention；
Figure 11 is the cross-sectional view in the direction A-A in Figure 10；
Figure 12 is the first vertical view installation diagram of card briquetting provided in an embodiment of the present invention；
Figure 13 is second of vertical view installation diagram of card briquetting provided in an embodiment of the present invention；
Figure 14 is the third vertical view installation diagram of card briquetting provided in an embodiment of the present invention；
Figure 15 is the top view of rectangular nut provided in an embodiment of the present invention；
Figure 16 is the upper and lower side frame overlap joint signal of solar photovoltaic assembly under no waterproof requirement provided in an embodiment of the present inventionFigure；
Figure 17 is the similar alternative arrangements cross-sectional view of card briquetting provided in an embodiment of the present invention.
Wherein, appended drawing reference are as follows: the first frame of 100-, the first groove of 110-, 120- cover board, the clamping portion 121-, 130- fallHook, the second frame of 200-, the second groove of 210-, 220- third groove, 300- third frame, the 4th groove of 310-, 320- the 5thGroove, the 6th groove of 330-, the first connector of 410-, the second connector of 420-, 430- card briquetting, 440- drain tank, 450- are anti-Water bar, 500- laminate, 510- sealant, 600-L type corner brace.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present inventionAttached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is onlyThe embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill peopleThe model that the present invention protects all should belong in member's every other embodiment obtained without making creative workIt encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this wayData be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein orSequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that coverCovering non-exclusive includes to be not necessarily limited to for example, containing the process, method of a series of steps or units, device, product or equipmentStep or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, productOr other step or units that equipment is intrinsic.
Embodiment 1
In one embodiment of the invention, bindiny mechanism between two kinds of solar energy layer casting dies is provided, for connecting two piecesSolar energy layer casting die, in the present embodiment, the bindiny mechanism are made of two frames, and the frame is laminate frame,The frame of solar energy layer casting die is as the bindiny mechanism between two neighboring laminate 500, the first connection machine i.e. in the applicationStructure be for connect upper and lower two pieces of laminates 500 (the solar energy layer casting die of the application is laid on inclined roof, up and downThere are differences in height for two pieces of laminates 500), referring to fig. 2, the first bindiny mechanism includes the first frame 100 and the second frame of strip200, first frame 100 is equipped with the first groove 110 and cover board 120, and referring to Fig. 3, second frame 200 is equipped with theTwo grooves 210, referring to fig. 4, first frame 100 connect cooperation with the second frame 200, first groove 110 and secondGroove 210 is respectively used to accommodate the side edge of adjacent two pieces of laminates 500, and the outer of the cover board 120 covers the second frame 200Portion of upper surface (such as Fig. 2) or whole upper surface (not shown), eliminate roof leaking risk.
It is installed for the ease of the quick connection of upper and lower two laminates 500, the lower section of the cover board 120 is equipped with clamping portion121, referring to Fig. 3, the third groove 220 with the clamping portion 121 cooperation is additionally provided on second frame 200, referring to fig. 4,First frame 100 and the second frame 200 are engaged by clamping by clamping portion 121 and third groove 220, i.e., by the first frame100 clamping portion 121 is embedded in the third groove 220 of the second frame 200, so that it may realize being vertically connected with for two pieces of laminates 500, sideJust quick.Specifically, the clamping portion 121 can be the clamping item isometric with the cover board 120, be also possible to distribution settingClamping block, it is preferable that clamping block is set in qually spaced in 120 lower section of cover board, and the application does not limit the concrete form of clamping portion 121Fixed, any structure that can cooperate with third groove 220 should all fall into the protection scope of the application.
Second of bindiny mechanism is for connecting the two pieces of laminates 500 in left and right, referring to figs. 7 and 8, the second bindiny mechanismIncluding the first connector 410, the second connector 420, card briquetting 430 and two strips third frame 300, it is described referring to Fig. 6Third frame 300 is equipped with the 4th groove 310 of horizontal direction opening and the 5th groove 320 of opening upwards, two third sides4th groove 310 of frame 300 is respectively used to accommodate the side edge of adjacent two pieces of laminates 500, and the card briquetting 430 is arranged twoIn 5th groove 320 of a third frame 300, first connector 410, the second about 420 connector are fixedly connected, and willThe card briquetting 430 is pressed in the 5th groove 320.
In a specific embodiment, first connector 410 is bolt, and second connector 420 is nut,Preferably square nut, referring to Figure 15.The bindiny mechanism further includes drain tank 440, the inner wall of the nut and drain tank 440Relative limit connects, and diagonally has designed arc-shaped appearance in rectangular nut design, inserts the nut into slot with can be convenient, while realizing anti-The only function of transfer is additionally provided with the 6th groove 330 that Open Side Down on the third frame 300, passes through the bolts and nutsConnection, the two sides cell wall of the drain tank 440 is separately mounted in the 6th groove 330 of two third frames 300, referring to Fig. 7,440 one side of drain tank supports third frame 300 and entire photovoltaic module as supporting beam, at the same time as sluicingWith realization second level water-proof function.
Specifically, it is fixed with a rectangular nut in the drain tank 440, specifically, fixed bolt is out of drain tank 440Portion's expenditure, bolt can slide, and rectangular nut is connected using inside welding or structure glue with formation inside drain tank 440, andIt does not destroy the sealing structure of drain tank 440, realizes and well sluice sealing performance from integral type of the top under；Simultaneously using bolt andThe fixed function of rectangular nut realizes being fixedly connected between two adjacent frames of left and right；In addition the cable of terminal box can alsoWith along bearing edge progress cabling, the present embodiment, H-type shown in Figure 12 is can be used in the card briquetting 430, can also be using figureType shown in U-shaped or Figure 14 shown in 13.
The third frame 300 and the second frame 200 are substantially coincident in structure: the 4th of third frame 300 is recessedSlot 310 and the second groove 210 of the second frame 200 are consistent, the 5th groove 320 and the second frame 200 of third frame 300Third groove 220 be consistent, difference is only that, the lower section of second frame 200 can the groove that Open Side Down(the 6th groove 330 corresponding to third frame 300) still in actual production, in order to simplify part classification, is preferably doneMethod is, by the second frame 200 using the structure of third frame 300, therefore, specific structure shape of the present invention to the second frame 200Formula (whether having the groove that Open Side Down) is not construed as limiting.
In terms of waterproof construction, second bindiny mechanism further includes water-proof strip 450, and the water-proof strip 450 covers twoThe portion of upper surface (such as Fig. 8) of third frame 300 or whole upper surfaces (not shown).The water-proof strip 450 uses weather-resistant glueItem, aluminium alloy, plastic-steel, glass steel, carbon steel or plastic material use silica gel, double-sided adhesive or bubble between the water-proof strip 450 and frameCelloidin band connection is clamped using elastic adhesive tape, and the water-proof strip 450 is used as cover board, can prevent rainwater from seeping among each componentThoroughly on roof, the present invention is stopped using water-proof strip 450 as level-one rainwater, realizes second level sluicing function using drain tank 440,Ensure that photovoltaic module mounting means has good water-proof function, water-proof function here, which refers to, prevents water from the upper of photovoltaic moduleSurface is seeped into lower section.As preferred one embodiment, the water-proof strip 450 and drain tank 440 are respectively whole covering roofWidth from top to bottom such as covers laterally three rows, longitudinal five photovoltaic modulies arranged, then needs four water-proof strips on roof450 and/or 4 drain tanks 440, each water-proof strip/drain tank are mounted on the gap location between per adjacent two column photovoltaic module.ButIt is it should be noted that whole water-proof strip/drain tank can be changed to the side for making a plurality of splicing as another embodimentFormula, for example, the lower end of a upper drain tank 440 is accommodated in next drain tank 440, not described here any more.
In implementation process, the water-proof strip 450 and drain tank 440 optionally can realize waterproof by one, but at oneIn preferred embodiment, while second level waterproof is realized using water-proof strip 450 and drain tank 440, obtains dual waterproofing protection effect.
Above-mentioned Liang Zhong bindiny mechanism is to provide service for the installation of solar photovoltaic assembly, in a reality of the inventionIt applies in example, provides a kind of solar photovoltaic assembly, if the photovoltaic module includes laminate 500, institute as above without waterproof requirementThe first bindiny mechanism or the second bindiny mechanism as described above stated utilizes the first side that is, between the laminate 500 of photovoltaic moduleFrame 100 and the second frame 200 realize quick connection, do not require the level of coverage of cover board 120, or utilize card briquetting 430Two third frames 300 (the second frame 200 can also be replaced third frame 300, referring to Figure 16) are achieved a fixed connection, andWater-proof strip 450 and drain tank 440 are not required (but still need to fix the second connector 420 below third frame such asThe installation part of nut, referring to Figure 17).
In addition, on fixed structure, carrying out two sides including the use of card briquetting 430 in the case where no waterproof requirementBeing fixedly connected between frame does not seal demand, with regard to opening designated port without carrying out processing to frame, therefore can directly pass through card pressureBlock simple designs (design) without sunk, referring to Figure 17.
Obviously, those skilled in the art can carry out various modification and variations without departing from spirit of the invention to inventionAnd range.If in this way, these modifications and changes of the present invention belong to the claims in the present invention and its equivalent technologies range itInterior, then the invention is also intended to include including these modification and variations.
Embodiment 2
In an embodiment of the present invention, a kind of water proof type solar photovoltaic assembly is provided, including laminate 500, strictly according to the factsThe first bindiny mechanism and the second bindiny mechanism described in example 1 are applied, specifically, the laminate 500 is rectangular block shape, by multipleThe cell piece of rectangle is arranged according to matrix form, and 500 surrounding side of laminate is equipped with frame: upper side is equipped with the second sideFrame 200, downside are equipped with the first frame 100, and left side and right side are mounted on third frame 300, the laminate 500The fixed and sealed connection between the first groove 110, the second groove 210 and the 4th groove 310.
It is equipped among first groove 110, the second groove 210 and the 4th groove 310 and laminate 500 and forms c-type packetThe sealant 510 enclosed in prioritization scheme, is additionally provided with barb 130 on first frame 100, referring to Fig. 5, institute referring to fig. 2It states barb 130 and the sealant 510 can be formed and stopped, reduce front sealant and overflow, avoid pollution, realize cleaning.In addition toSealant is fixed between frame and laminate 500 with silica gel or foam tape, and rainwater or aqueous vapor can be prevented from lamination 100Side penetrates EVA or POE corrosion cell piece, to carry out 100% comprehensive inner sealing and protection structure to laminate surrounding.
Further, the side of the laminate 500 is equipped with frame, and the frame includes the first frame 100, the second sideFrame 200 and third frame 300, adjacent frame junction bolt are bonded or are overlapped using L-type corner brace 600.In the present embodimentIn, a kind of L-type corner brace 600 is provided, is located at single solar photovoltaic assembly most edge, is consolidated using L-type corner brace 600It is fixed, using the equipment of automation, the L-type corner brace 600 is caught in the corresponding card slot design of frame, structure can be thus formedIt is compact, but meet the protection and high intensity of frame.Structure such as Fig. 9, the L-type corner brace 600 include L-type item and are arranged in L-type itemOn three protrusions (unilateral side is set there are three protrusion, and L-type corner brace 600 includes 6 protrusions), the L-type corner brace 600 and frameFixed form it is as shown in FIG. 10 and 11, the L-type corner brace 600 protrusion respectively on frame groove cooperate, installation sideTo that can be to install from top to bottom, by the L-type corner brace, the same laminate can also be fast implemented to install from bottom to upAdjacent frame being quickly fixedly connected in right angle on 500.
Embodiment 3
In a preferred embodiment of the invention, the solar photovoltaic assembly is double glass photovoltaic modulies, in the prior art,Double glass photovoltaic modulies since intensity itself reaches certain standard, be without frame, in the present embodiment, double glass lightComponent band frame is lied prostrate, the frame is made of aluminium, aluminium alloy, plastic-steel, glass steel, carbon steel or plastic material, light meetingUnder the premise of high-intensitive demand, meets the needs of easy for installation, certain frame material, which can also be selected, meets above-mentioned requirementsOther metal materials, frame can be used for conventional single glass photovoltaic module by increasing section wall thickness or increasing Material Strength.
Preferably, the height of the frame is 12mm~25mm, i.e. frame is designed using very thin structure, entire photovoltaicThe seal ring thickness of component is lower than 20mm, on the one hand realizes the design that quickly frames up, also achieves the outdoor Fast Installation of each component；BenefitDesigned with card briquetting 430, realize each component physics limit function, when single card briquetting being avoided to loosen, face it is chain loosen andThe risk flown.
It should be understood that double glass structures can be used in cell piece in the present invention, various crystalline silicons can also be used, herein notGive restriction；Crystalline silicon can be polycrystalline or monocrystalline, and various efficiency are all suitable for；Cell piece is readily applicable to conventional WelderSkill perhaps low-temperature welding or adhesive tape technique or imbrication component process, do not limit application；Cell piece can also useConventional single glass structure, technique itself does not also limit, but the base of structural strength and anti-crack ability is considered based on practical applicationThis actual demand can mainly consider the crystalline silicon battery plate subassembly product of more main grids, it is also contemplated that the product of non-crystalline siliconUsing；Circuit design includes half, and imbrication circuit can be using transparent or white EVA either colored glaze back-panel glass etc..
In addition, border structure provided by the invention can be applied to double-side cell piece electrification component, evading what the back side was blockedUnder the premise of, and can satisfy normal load mechanical performance.
Embodiment 4
In one embodiment of the invention, a kind of solar photovoltaic assembly installation method is provided, such as embodiment 1 is utilizedFirst bindiny mechanism and the second bindiny mechanism is attached installation to laminate 500, and protocol step includes: two pieces up and downIt is installed between laminate by the connection of the first bindiny mechanism, passes through the second bindiny mechanism connection peace between the two pieces of laminates in left and rightDress.
The present embodiment additionally provides a kind of solar energy roof, using above-mentioned solar photovoltaic assembly installation method to multiple light500 matrix arrangement of laminate for lying prostrate component, is laid on roof top or house beam, and formation can substitute traditional brick tile roof tooPositive energy roof, had not only realized solar power generation effect, but also play the role of rainwater-proof.
In conclusion solar photovoltaic assembly provided by the invention, laminate 500 be by multiple rectangles cell piece byIt is arranged according to matrix form, the four edges of the laminate 500 are respectively and fixedly provided with frame, phase between two adjacent framesIt mutually overlaps, installation is attached by frame between different laminates 500.When the multiple photovoltaic module assembles, it will be laminatedPart 500 is inserted into the first groove 110, the second groove 210 and the 4th groove 310 and realizes engaging, and L-type angle is used between frame and frameCode 600 is fixed, is fixed between frame and laminate 500 with sealant (silica gel) or foam tape, can prevent rainwater or waterGas penetrates EVA or POE corrosion cell piece from 500 side of laminate, to form 100% comprehensive inner sealing and protection knotStructure；Overlap joint is realized by the engaging of card briquetting 430 between two adjacent frames of left and right.The present invention is inclined according to roof heightFeature realizes water-proof function using the engaging of frame and card briquetting；It is realized simultaneously using the engaging up and down, between left and right side frameFast Installation, it is not easily to fall off.
Obviously, those skilled in the art can carry out various modification and variations without departing from spirit of the invention to inventionAnd range.If in this way, these modifications and changes of the present invention belong to the claims in the present invention and its equivalent technologies range itInterior, then the invention is also intended to include including these modification and variations.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention andWithin principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.