CN205502399U - Node structure of nail block and applied nail block - Google Patents

Abstract

An embodiment of the utility model provides a node structure of nail block and applied nail block, the nail block, include: the buckle closure, the buckle closure includes: caping, two lid lateral walls and two lids are followed, detain the seat, detain the stationary ladle and draw together: U type seat top, two seat lateral walls and two seats are followed, wherein, the buckle closure can the lock on detaining the seat, when the buckle closure lock in detaining seat when lasting, the seat is detained to the buckle closure parcel, and the second on two seat edges end supports card in the junction of second end with the first end on two lid edges of two lid lateral walls, correspondingly, still provide one kind and use and follow closely the node structure of blocking a shot, according to the utility model provides a technical scheme can solve the pin fin effectively and expose the problem in the outside, has reduced the probability that the pin fin received rain erosion, has improved the life of nail, and then has improved the life of applied nail block node structure, and the nail block has prevented effectively that the rainwater from through nail hole infiltration building, having reduced the risk of rain erosion building, hides the pin fin simultaneously to make the building more pleasing to the eye.

Description

A kind of node structure following closely block and application nail block

Technical field

This utility model embodiment relates to building construction technology field, particularly relates to the block of a kind of nail and answers Node structure with nail block.

Background technology

At present, when installing roof boarding, during especially with color steel material as roof boarding, generally adopt With screw, the purlin in roof boarding and house is fixedly connected, in existing technology, roof boarding is installed After completing, the top cap of screw is often exposed on outside, as it is shown in figure 5, Fig. 5 is room in prior art Panel scheme of installation, through the corrosion easily causing screw top cap of exposing to the weather for a long time, significantly Reduce the life-span of screw, and then have impact on the life-span in house.

After screw is corroded, screw position also can occur rain leakage problem, was additionally constructing Cheng Zhong, tapping strength is overweight, kick the beam, and trains off from screw, beats tiltedly etc., screw position all may be made to cause Rain leakage, is caused roofing point water dripping and is built up by heat-preservation cotton, taking care of the pence, and forms multiple spot and leaks.

Therefore, a kind of novel having preferably prevents the be corroded technical scheme of effect of ailhead from urgently proposing.

Utility model content

This utility model embodiment provides a kind of node structure following closely block and application nail block, in order to solve During in prior art, node installed by roof boarding, ailhead is exposed to the corrosion-prone technological deficiency in outside.

This utility model embodiment provides one nail block, including:

Buckle closure, described buckle closure includes: caping, two lid sidewalls and two cover rims, wherein, two institutes The first end stating lid sidewall is connected to the opposite end of described caping, the second of two described lid sidewalls End extends the first distance respectively to the direction away from described caping, and the second end of two described lid sidewalls is positioned at The homonymy of described caping and between distance more than the distance between the first end of two described lid sidewalls, two First end of individual described cover rim is connected to the second end of two described lid sidewalls, two described cover rims Second end extends second distance to the inside of two described lid sidewalls；

Button Block, described Button Block includes: U-shaped seat top, two seat sidewalls and two seat edges, wherein, two First end of individual described seat sidewall is connected at two top end openings on described U-shaped seat top, two institutes The second end stating a sidewall extends the 3rd distance, described in two to the direction away from described U-shaped seat top respectively Second end homonymy on described U-shaped seat top of seat sidewall and between distance more than two described seat sidewalls The first end between distance, first end on two described seat edges is connected to two described seat sidewalls Second end, second end on two described seat edges extends the 4th distance to the outside of two described seat sidewalls；

Wherein, described buckle closure can be fastened on described Button Block, when described buckle closure is fastened on described Button Block Time, described buckle closure wraps up described Button Block, and second end on two described seat edges supports and is stuck in two described lid sides The junction of the first end of the second end of wall and two described cover rims.

Preferably, the bottom end on described U-shaped seat top is provided with at least one nail.

Preferably, the junction of the first end of two top ends on described U-shaped seat top and described seat sidewall in Circular arc.

Preferably, the first end of two described lid sidewalls opposite end with described caping respectively welds, and two First end of individual described cover rim the second end with two described lid sidewalls respectively welds；

First end of two described seat sidewalls welds with at two top end openings on described U-shaped seat top respectively, First end on two described seat edges the second end with two described seat sidewalls respectively welds.

Preferably, described buckle closure is an overall structure, and described Button Block is an overall structure.

Preferably, described buckle closure surface and described Button Block surface have anticorrosive coat.

Correspondingly, this utility model embodiment also provides for the node structure of a kind of application nail block, including:

Nail block, described nail block includes: buckle closure and Button Block, and described buckle closure is one, and described Button Block is Multiple；

Described buckle closure includes: caping, two lid sidewalls and two cover rims, wherein, and two described lid sides First end of wall is connected to the opposite end of described caping, and the second end of two described lid sidewalls is respectively Extend the first distance to the direction away from described caping, the second end of two described lid sidewalls is positioned at described lid Top homonymy and between distance more than two described lid sidewalls the first end between distance, described in two First end of cover rim is connected to the second end of two described lid sidewalls, the second end of two described cover rims Second distance is extended to the inside of two described lid sidewalls；

Described Button Block includes: U-shaped seat top, two seat sidewalls and two seat edges, wherein, described in two First end of seat sidewall is connected at two top end openings on described U-shaped seat top, two described seat sides Second end of wall extends the 3rd distance, two described seat sidewalls to the direction away from described U-shaped seat top respectively Second end homonymy on described U-shaped seat top and between distance more than the first of two described seat sidewalls Distance between end, first end on two described seat edges is connected to the second end of two described seat sidewalls, Second end on two described seat edges extends the 4th distance to the outside of two described seat sidewalls；

Roof boarding, described roof boarding is provided with lobe；

Room purlin, described room purlin is used for fixing described roof boarding；

In the lobe of described roof boarding, described nail block and described panel are connected to described by screw On room purlin, wherein, described Button Block is buckled in described lobe, and the bottom on described U-shaped seat top is close to Described lobe top, the nail tip portion of described screw passes described Button Block and the described projection of described roof boarding Portion inserts in described room purlin, and the screw cap of described screw is positioned at the U-shaped sky on the U-shaped seat top of described Button Block In, described buckle closure is buckled on described Button Block, when described buckle closure is fastened on described Button Block, described Buckle closure wraps up described Button Block, and second end on two described seat edges supports and is stuck in the second of two described lid sidewalls The junction of the first end of end and two described cover rims.

Preferably, described nail block uses with described raised portion fits, and the size of described nail block is with described The size of the lobe of roof boarding matches, and wherein, the distance between the second end of two seat sidewalls is more than The width on described lobe top.

Preferably, the bottom on described U-shaped seat top is provided with at least one nail；

Two top ends on described U-shaped seat top are circular arc with the junction of the first end of described seat sidewall；

First end of two described lid sidewalls opposite end with described caping respectively welds, two described lids First end on edge the second end with two described lid sidewalls respectively welds, the first end of two described seat sidewalls Weld with at two top end openings on described U-shaped seat top respectively, first end on two described seat edges respectively with Second end welding of two described seat sidewalls, or described buckle closure is an overall structure, described Button Block is one whole Body structure；

Described buckle closure surface and described Button Block surface have anticorrosive coat.

Furthermore it is preferred that the two ends of described nail block are coated with waterproof layer.

The technical scheme provided according to this utility model, can efficiently solve ailhead and be exposed to outside Problem, reduces the ailhead probability by rain erosion, improves the service life of nail, and then improves In the service life of application nail block node structure, nail block be effectively prevent rainwater and penetrated into by nail and build Build thing, reduce the risk of rain erosion building, ailhead is hidden simultaneously and make building more attractive in appearance.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, Accompanying drawing in describing below is embodiments more of the present utility model, comes for those of ordinary skill in the art Say, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the structural representation following closely block in this utility model embodiment；

Fig. 2 is to follow closely the buckle closure of block and the structural representation of Button Block in this utility model embodiment；

Fig. 3 is the schematic diagram of the node structure of application nail block in this utility model embodiment；

Fig. 4 is the perspective view following closely block in this utility model embodiment another kind embodiment；

Fig. 5 is the node structure schematic diagram of roof boarding in prior art.

Detailed description of the invention

For making the purpose of this utility model embodiment, technical scheme and advantage clearer, below in conjunction with Accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out clear, It is fully described by, it is clear that described embodiment is a part of embodiment of this utility model rather than complete The embodiment in portion.Based on the embodiment in this utility model, those of ordinary skill in the art are not making The every other embodiment obtained under creative work premise, broadly falls into the scope of this utility model protection.

In currently available technology, when installing roof boarding, by screw by roof boarding at house purlin It is attached with purlin, such as, when roof boarding is color steel material, colored steel roof plate has compartment Projection and depression, be attached with house purlin often by the lobe on color steel when being attached, Fig. 5 is the node structure schematic diagram of roof boarding in prior art, as it is shown in figure 5, after Lian Jieing, screw Ailhead be typically exposed to outside, through long wind and weather, ailhead part will be corroded, nail Head and roof boarding junction will occur the danger of rain leakage, affect the service life in house, follow closely simultaneously The outside that head exposes also affects the overall appearance of building, if it is possible to is stashed by ailhead, not only may be used To prevent ailhead by raindrop erosion well, thus prevent rainwater from penetrating into building, and do not affect building The overall appearance of thing.

Fig. 1 is the structural representation following closely block in this utility model embodiment, and Fig. 2 is that this utility model is real Execute buckle closure 10 and the structural representation of Button Block 20 following closely block in example, as illustrated in fig. 1 and 2:

This utility model embodiment provides one nail block, including: buckle closure 10 and Button Block 20.

Buckle closure 10 includes: 11, two lid sidewalls 12 of caping and two cover rims 13, wherein, and two lids First end 121 of sidewall 12 is connected to the opposite end of caping 11, the second of two lid sidewalls 12 End 122 extends the first distance, the second end 122 of two lid sidewalls 12 respectively to the direction away from caping 11 Caping 11 homonymy and between distance more than two lid sidewalls 12 the first end 121 between away from From, the first end of two cover rims 13 is connected to the second end 122 of two lid sidewalls 12, two lids The second end along 13 extends second distance to the inside of two lid sidewalls 12.

Button Block 20 includes: 21, two, U-shaped seat top seat sidewall 22 and two seats are along 23, wherein, and two First end 221 of individual seat sidewall 22 is connected at two top end openings on U-shaped seat top 21, two Seat sidewall 22 the second end 222 respectively to away from U-shaped seat top 21 direction extend the 3rd distance, two Second end 222 homonymy on U-shaped seat top 21 of seat sidewall 22 and between distance more than two seat sides Distance between first end 221 of wall 22, two seats are connected to two along first end 231 of 23 Second end 222 of seat sidewall 22, two seats the second end 232 along 23 is to the outside of two seat sidewalls 22 Extend the 4th distance；

The lobe 40 of Button Block 20 with roof boarding 60, when construction, is attached by nail block by nail, Then being fastened on Button Block 20 by buckle closure 10, wherein, buckle closure 10 can be fastened on Button Block 20, when When buckle closure 10 is fastened on Button Block 20, buckle closure 10 wraps up Button Block 20, and two seats are along second end of 23 232 to the junction of the first end of the second end 122 and two cover rims 13 being stuck in two lid sidewalls 12, Nail is stashed by buckle closure 10 and Button Block 20, and nail is not exposed to outside so that building is more Attractive in appearance, when Sometimes When It Rains, rainwater falls on buckle closure 10, flows away along buckle closure 10, will not corrode Nail, effectively prevent the nail risk by rain erosion.

Be described in further detail the application of nail block below by the node structure of application nail block, Fig. 3 is The schematic diagram of the node structure of application nail block in this utility model embodiment, as shown in Figure 3:

Correspondingly, this utility model embodiment also provides for the node structure of a kind of application nail block, including:

Nail block, nail block includes: buckle closure 10 and Button Block 20, buckle closure 10 is one, and Button Block 20 is Multiple；

Buckle closure 10 includes: 11, two lid sidewalls 12 of caping and two cover rims 13, wherein, and two lids First end 121 of sidewall 12 is connected to the opposite end of caping 11, the second of two lid sidewalls 12 End 122 extends the first distance, the second end 122 of two lid sidewalls 12 respectively to the direction away from caping 11 Caping 11 homonymy and between distance more than two lid sidewalls 12 the first end 121 between away from From, the first end of two cover rims 13 is connected to the second end 122 of two lid sidewalls 12, two lids The second end along 13 extends second distance to the inside of two lid sidewalls 12；

Roof boarding 60, roof boarding 60 is provided with lobe 40, and roof boarding bosom is provided with centre Layer 50；

Room purlin 70, room purlin 70 is used for fixing roof boarding 60, for fix roof boarding 60 can be The parts of other fixing roof boardings 60 such as room purlin 70 or room beam, are not particularly limited herein.

Wherein, Button Block 20 includes: 21, two, U-shaped seat top seat sidewall 22 and two seats along 23, its In, the first end 221 of two seat sidewalls 22 is connected at two top end openings on U-shaped seat top 21, Second end 222 of two seat sidewalls 22 extends the 3rd distance to the direction away from U-shaped seat top 21 respectively, Second end 222 of two seat sidewalls 22 homonymy on U-shaped seat top 21 and between distance more than two Distance between first end 221 of seat sidewall 22, two seats are connected to along first end 231 of 23 Second end 222 of two seat sidewalls 22, two seats the second end 232 along 23 is to two seat sidewalls 22 Outside extension the 4th distance；

Buckle closure 10 can be an overall structure, and by an integral material by being processed into, buckle closure 10 is also Can be made by splicing, it is preferable that the first end 121 of two lid sidewalls 12 respectively with caping 11 Opposite end welds, and the first end of two cover rims 13 the second end 122 with two lid sidewalls 12 respectively welds Connect.Such as 11, two lid sidewalls 12 of caping and two cover rims 13 are carried out welding respectively and make buckle closure 10, it is also possible to being made by part splicing, such as caping 11 and two lid sidewalls 12 are an overall structure, The second end 122 at two lid sidewalls 12 is respectively welded two cover rims 13, and part splicing form can also Do not limit for other forms.First end 121 of two lid sidewalls 12 is connected to caping 11 Opposite end, the second end 122 of two lid sidewalls 12 extends the to the direction away from caping 11 respectively One distance, the second end 122 of two lid sidewalls 12 caping 11 homonymy and between distance be more than Distance between first end 121 of two lid sidewalls 12, caping 11, lid sidewall 12 and cover rim 13 Forming a semi-open space, this space is in being wrapped in Button Block 20.

Button Block 20 can be an overall structure, is processed into by an integral material, it is also possible to by splicing Making, the first end 221 of two seat sidewalls 22 welds with at two top end openings on U-shaped seat top 21 respectively Connecing, two seats weld with the second end 222 of two seat sidewalls 22 respectively along first end 231 of 23.Example As two seat sidewalls 22 being respectively welded at two top end openings on U-shaped seat top 21, by two seat edges 23 are respectively welded at the second end 222 of two seat sidewalls 22, and Button Block 20 can also be part splicing system Becoming, such as seat sidewall 22 and seat are an overall structure along 23, weld with U-shaped seat top 21 and make Button Block 20.Second end 222 of two seat sidewalls 22 homonymy on U-shaped seat top 21 and between distance be more than Distance between first end 221 of two seat sidewalls 22, two seat sidewalls 22 and U-shaped seat push up 21 shapes Becoming half open space, this space is interior for the lobe 40 of roof boarding 60 being wrapped in, U-shaped seat top The bottom of 21 can be flat, in order to preferably fit with roof boarding 60 lobe 40.

According to the demand of actual condition, buckle closure 10 can be one, and Button Block 20 is tieed up multiple, and Fig. 4 is this Utility model embodiment another kind embodiment is followed closely the perspective view of block, as shown in Figure 4, button Lid 10 is one, and Button Block 20 is multiple, in multiple Button Blocks 20 are wrapped in by buckle closure 10, prevents Button Block 20 and nail expose outside.

The node structure of application nail block, when construction, in the lobe 40 of roof boarding 60, passes through screw Nail block and panel are connected on room purlin 70 by 30, and wherein, Button Block 20 is buckled in lobe 40, U The bottom on type seat top 21 is close to lobe 40 top, and the nail tip portion of screw 30 passes Button Block 20 and room The lobe 40 of panel 60 is inserted in room purlin 70, and screw 30 cap of screw 30 is positioned at Button Block 20 In the U-shaped space on U-shaped seat top 21, buckle closure 10 is buckled on Button Block 20, when buckle closure 10 is fastened on button Time on seat 20, buckle closure 10 wraps up Button Block 20, and the second end 232 that two seats are along 23 supports and is stuck in two Second end 122 of lid sidewall 12 and the junction of the first end of two cover rims 13.

Can preferably play prevent nail by the effect of rain erosion to follow closely block, this utility model is implemented Example preferably, nail block and lobe 40 with the use of, the size of nail block and the projection of roof boarding 60 The size in portion 40 matches, and wherein, the distance between the second end 222 of two seat sidewalls 22 is more than convex Play the width on top, portion 40.Distance between second end 222 of two seat sidewalls 22 of Button Block 20 is more than The width on lobe 40 top, Button Block 20 may wrap the top of lobe 40, the size of nail block Match with the size of the lobe 40 of roof boarding 60.

When being attached with roof boarding 60 by Button Block 20 by nail, nail needs through Button Block 20 U-shaped seat top 21, if being directed through U-shaped seat top 21, it is possible to owing to the effect of impulsive force is led by nail Cause U-shaped seat top 21 to deform and the deformation of nail so that U-shaped seat top 21 and the knot of roof boarding 60 Coordinating not tight at conjunction, preferably, the bottom on U-shaped seat top 21 is provided with at least this utility model embodiment One nail.Nail is set in the bottom on U-shaped seat top 21, so that nail is easily through U-shaped Seat top 21, does not results in U-shaped seat top 21 and the deformation of nail, and the size of nail can coordinate nail Diameter is arranged, it is impossible to more than the diameter of nail, and the quantity of nail can also set according to actual condition Put, when being attached roof boarding 60 with a nail on Button Block 20, a nail be set, when with When multiple nails connect Button Block 20 and roof boarding 60, multiple nail is set.When buckle closure 10 is fastened on Button Block Time on 20, two seats the second end 232 along 23 supports the second end 122 and two being stuck in two lid sidewalls 12 The junction of the first end of individual cover rim 13, for making two seats the second end 232 along 23 at two lid sidewalls The more firm of card, Button Block 20 are supported in the junction of second end 122 of 12 and the first end of two cover rims 13 Can have elasticity, two top ends on U-shaped seat top 21 and the connection of the first end 221 of seat sidewall 22 Place is circular arc.Circular arc has preferable ductility and restorative, so that Button Block 20 has stronger Elasticity, makes the access section between Button Block 20 and buckle closure 10 more firm, stable.

For increasing the antiseptic property of nail block, buckle closure 10 surface and Button Block 20 surface have anticorrosive coat, anti- Rotten layer is possible not only to be effectively prevented buckle closure 10 and Button Block 20 is corroded, and anticorrosive coat is through processing simultaneously After nail block can be made more attractive in appearance, such as, nail cap surface carry out zinc-plated process, can by heat Zincincation carries out zinc-plated process to nail cap surface, and the embodiment of the present invention does not limits.

It addition, this utility model embodiment is preferably, the two ends of nail block are coated with waterproof layer.By buckle closure After 10 are fastened on Button Block 20, the two ends of buckle closure 10 are in opening-wide state, for preventing rainwater from buckle closure The two ends of 10 invade in nail block, cover waterproof layer at the two ends of buckle closure 10, by close for the two ends of buckle closure 10 Seal, prevent the end of rain erosion buckle closure 10, the end of Button Block 20 and the head of a nail of nail.

Be described below a kind of application nail block node structure construction method:

1, the Button Block 20 of nail catcher cap is buckled in lobe 40, makes the bottom on U-shaped seat top 21 be close to Lobe 40 top；

2, by tapping screw 30, the Button Block 20 of nail block and the lobe 40 of roof boarding 60 are connected to On room purlin 70, the ailhead of tapping screw 30 passes Button Block 20 and the lobe 40 of roof boarding 60, inserts Enter in room purlin 70；

3, after multiple Button Blocks 20 are arranged on the predeterminated position of lobe 40, buckle closure 10 is fastened on button On seat 20, wherein the length of buckle closure 10 is corresponding to the length of the lobe 40 of roof boarding 60；

4, the two ends in nail block cover waterproof layer；

5, the node structure of application nail block completes.

In sum, the technical scheme provided according to this utility model, ailhead can be efficiently solved sudden and violent The problem being exposed on the outside, reduces the ailhead probability by rain erosion, improves the service life of nail, And then improve the service life applying nail block node structure, nail block effectively prevent rainwater by nail Building is penetrated in hole, reduces the risk of rain erosion building, is hidden by ailhead simultaneously and make building More attractive in appearance.

Device embodiment described above is only schematically, wherein said illustrates as separating component Unit can be or may not be physically separate, the parts shown as unit can be or Person may not be physical location, i.e. may be located at a place, or can also be distributed to multiple network On unit.Some or all of module therein can be selected according to the actual needs to realize the present embodiment The purpose of scheme.Those of ordinary skill in the art are not in the case of paying performing creative labour, the most permissible Understand and implement.

Last it is noted that above example is only in order to illustrate the technical solution of the utility model, rather than It is limited；Although this utility model being described in detail with reference to previous embodiment, this area Those of ordinary skill is it is understood that the technical scheme described in foregoing embodiments still can be carried out by it Amendment, or wherein portion of techniques feature is carried out equivalent；And these amendments or replacement, not The essence making appropriate technical solution departs from the spirit and scope of this utility model each embodiment technical scheme.

Claims (10)

1. nail block, it is characterised in that including:

Buckle closure, described buckle closure includes: caping, two lid sidewalls and two cover rims, wherein, first end of two described lid sidewalls is connected to the opposite end of described caping, second end of two described lid sidewalls extends the first distance to the direction away from described caping respectively, second end of two described lid sidewalls described caping homonymy and between distance more than two described lid sidewalls the first end between distance, first end of two described cover rims is connected to the second end of two described lid sidewalls, second end of two described cover rims extends second distance to the inside of two described lid sidewalls；

Button Block, described Button Block includes: U-shaped seat top, two seat sidewalls and two seat edges, wherein, first end of two described seat sidewalls is connected at two top end openings on described U-shaped seat top, second end of two described seat sidewalls extends the 3rd distance to the direction away from described U-shaped seat top respectively, second end of two the described seat sidewalls homonymy on described U-shaped seat top and between distance more than the distance between the first end of two described seat sidewalls, first end on two described seat edges is connected to the second end of two described seat sidewalls, second end on two described seat edges extends the 4th distance to the outside of two described seat sidewalls；

Wherein, described buckle closure can be fastened on described Button Block, when described buckle closure is fastened on described Button Block, described buckle closure wraps up described Button Block, and second end on two described seat edges is to the junction of the first end of the second end and two described cover rims being stuck in two described lid sidewalls.

Nail block the most according to claim 1, it is characterised in that the bottom end on described U-shaped seat top is provided with at least one nail.

Nail block the most according to claim 1, it is characterised in that two top ends on described U-shaped seat top are circular arc with the junction of the first end of described seat sidewall.

Nail block the most according to claim 1, it is characterised in that the first end of two described lid sidewalls opposite end with described caping respectively welds, the first end of two described cover rims the second end with two described lid sidewalls respectively welds；

First end of two described seat sidewalls welds with at two top end openings on described U-shaped seat top respectively, and first end on two described seat edges the second end with two described seat sidewalls respectively welds.

Nail block the most according to claim 1, it is characterised in that described buckle closure is an overall structure, described Button Block is an overall structure.

6. according to described nail block arbitrary in claim 1-5, it is characterised in that described buckle closure surface and described Button Block surface have anticorrosive coat.

7. the node structure applying nail block, it is characterised in that including:

Nail block, described nail block includes: buckle closure and Button Block, and described buckle closure is one, and described Button Block is multiple；

Described buckle closure includes: caping, two lid sidewalls and two cover rims, wherein, first end of two described lid sidewalls is connected to the opposite end of described caping, second end of two described lid sidewalls extends the first distance to the direction away from described caping respectively, second end of two described lid sidewalls described caping homonymy and between distance more than two described lid sidewalls the first end between distance, first end of two described cover rims is connected to the second end of two described lid sidewalls, second end of two described cover rims extends second distance to the inside of two described lid sidewalls；

Described Button Block includes: U-shaped seat top, two seat sidewalls and two seat edges, wherein, first end of two described seat sidewalls is connected at two top end openings on described U-shaped seat top, second end of two described seat sidewalls extends the 3rd distance to the direction away from described U-shaped seat top respectively, second end of two the described seat sidewalls homonymy on described U-shaped seat top and between distance more than the distance between the first end of two described seat sidewalls, first end on two described seat edges is connected to the second end of two described seat sidewalls, second end on two described seat edges extends the 4th distance to the outside of two described seat sidewalls；

Roof boarding, described roof boarding is provided with lobe；

Room purlin, described room purlin is used for fixing described roof boarding；

Lobe at described roof boarding, by screw, described nail block and described panel are connected on described room purlin, wherein, described Button Block is buckled in described lobe, the bottom on described U-shaped seat top is close to described lobe top, the nail tip portion of described screw inserts in described room purlin through the described lobe of described Button Block and described roof boarding, the screw cap of described screw is positioned at the U-shaped space on the U-shaped seat top of described Button Block, described buckle closure is buckled on described Button Block, when described buckle closure is fastened on described Button Block, described buckle closure wraps up described Button Block, and second end on two described seat edges is to the junction of the first end of the second end and two described cover rims being stuck in two described lid sidewalls.

Node structure the most according to claim 7, it is characterized in that, described nail block uses with described raised portion fits, and the size of described nail block matches with the size of the lobe of described roof boarding, wherein, the distance between the second end of two seat sidewalls is more than the width on described lobe top.

Node structure the most according to claim 7, it is characterised in that the bottom on described U-shaped seat top is provided with at least one nail；

Two top ends on described U-shaped seat top are circular arc with the junction of the first end of described seat sidewall；

First end of two described lid sidewalls opposite end with described caping respectively welds, first end of two described cover rims the second end with two described lid sidewalls respectively welds, first end of two described seat sidewalls welds with at two top end openings on described U-shaped seat top respectively, first end on two described seat edges the second end with two described seat sidewalls respectively welds, or described buckle closure is an overall structure, described Button Block is an overall structure；

Described buckle closure surface and described Button Block surface have anticorrosive coat.

10. according to described node structure arbitrary in claim 7-9, it is characterised in that the two ends of described nail block are coated with waterproof layer.