CN208966814U - It is a kind of for install resin tile from reaming self-tapping screw - Google Patents

Abstract

The utility model discloses it is a kind of for install resin tile from reaming self-tapping screw, including the from top to bottom successively screw cap of integrally connected, polished rod portion, threaded shank and dovetail head, the polished rod portion is equipped with cornish bit and limit double wedge, the limit convex tooth position is below cornish bit, the limit double wedge projecting edge is concordant with threaded shank thread outer diameter, and the cornish bit projecting edge outermost end is greater than limit double wedge projecting edge outer end to polished rod portion axial line distance to polished rod portion axial line distance；What the utility model setting limit double wedge can limit self-tapping screw pierces depth, has the characteristics that operation is convenient, and can prevent self-tapping screw from piercing and excessively oppress resin tile deformation；In addition, the through-hole that resin tile is connect by setting cornish bit with self-tapping screw expands, it can prevent resin tile expanded by heating from squeezing and lead to the hole site is caused to be cracked.

Description

It is a kind of for install resin tile from reaming self-tapping screw

Technical field

The utility model relates to building materials technology fields, and in particular to screw is used in a kind of installation of synthetic resin watt.

Background technique

Synthetic resin watt is the New Building Materials developed with high-new chemical Chemical Engineering Technology, has light-weight, strong A variety of good characteristics such as big, waterproof and dampproof, antiseptic fire-retardation, sound-insulating and heat-insulating are spent, development zone flat-changed-into-sloping, agricultural trade city are generally applicable to Field, market, residential quarters, new countryside construction resident Deluxe villa, canopy, awning, pseudo-classic architecture etc..

Synthetic resin watt needs to be fixed using self-tapping screw when being mounted on roof, and worker generally uses electric drill by self tapping Screw is squeezed into, and installation process shows following problems at this stage: 1, self-tapping screw is in synthetic resin tiling punched hole and self tapping Screw rod body is in close contact, and in hot weather, synthetic resin meeting expanded by heating causes resin at hole to squeeze towards self-tapping screw Pressure, to cause resin tile deformation at this or even crack occur, causes tile to loosen, influences the service life of synthetic resin watt； 2, when self-tapping screw is squeezed into, worker is difficult to control driving depth, and depth deficiency will affect resin tile installation stable degree, too deep then Self-tapping screw cap excessive compression synthetic resin watt surface can be made to damage its deformation even.

Summary of the invention

In view of the deficiencies of the prior art, the utility model is intended to provide one kind and has resin tiling hole expansion function and can determine The self-tapping screw for being used to install resin tile that deep drilling enters.

To achieve the above objectives, the present invention adopts the following technical solutions:

It is a kind of for install resin tile from reaming self-tapping screw, including from top to bottom successively the screw cap of integrally connected, Polished rod portion, threaded shank and dovetail head, the polished rod portion are equipped with cornish bit and limit double wedge, and the limit convex tooth position is under cornish bit Side, the limit double wedge projecting edge is concordant with threaded shank thread outer diameter, the cornish bit projecting edge outermost end to polished rod Portion's axial line distance is greater than limit double wedge projecting edge outer end to polished rod portion axial line distance.

Further, the cornish bit is 2 or 3, and the cornish bit is along polished rod portion axial line circumference array.

Further, the limit double wedge is 5-15, and the limit double wedge is around along polished rod portion axial line circumference array.

Further, the polished rod minister degree is 1/2-1.5 times of threaded shank length.

Further, there are two chip spaces, described two chip spaces to extend to the threaded shank shape for tool on the dovetail head At tapping.

Further, the screw cap bottom surface has outwardly extending gasket part, and the gasket part is circle.

Further, the cornish bit is fan blades or triangular edges.

Further, the cornish bit and limit double wedge are radially projecting.

Further, the screw cap is hexagon cap head.

Further, the screw cap of the integrally connected, polished rod portion, threaded shank and the processing of dovetail head surface zinc electroplating with iridescent yellow chromate conversion coating.

The utility model has the following beneficial effects:

What the utility model setting limit double wedge can limit self-tapping screw pierces depth, and it is convenient to have the characteristics that operate, and It can prevent self-tapping screw from piercing excessively compressing resin tile deformation；In addition, what resin tile was connect by setting cornish bit with self-tapping screw Through-hole expands, and can prevent resin tile expanded by heating from squeezing and lead to the hole site is caused to be cracked.

Detailed description of the invention

The structural schematic diagram that Fig. 1 is the utility model cornish bit when being fan blades；

The structural schematic diagram that Fig. 2 is the utility model cornish bit when being triangle blade；

In figure: 1, screw cap；2, polished rod portion；3, threaded shank；4, dovetail head；5, cornish bit；6, double wedge is limited；7, chip removal Slot；8, gasket part.

Specific embodiment

With reference to the accompanying drawing and specific embodiment, the utility model will be further described, in order to clearer reason Solve the technical idea of the requires of the utility model protection.

The utility model as illustrated in fig. 1 and 2 it is a kind of for install resin tile from reaming self-tapping screw, including from top to bottom The successively screw cap 1 of integrally connected, polished rod portion 2, threaded shank 3 and dovetail head 4, the polished rod portion 2 are equipped with cornish bit 5 and limit convex Tooth 6, the limit double wedge 6 are located at 5 lower section of cornish bit, and 6 projecting edge of limit double wedge and 3 thread outer diameter of threaded shank are flat Together, the 5 projecting edge outermost end of cornish bit is greater than limit 6 projecting edge outer end of double wedge to light to 2 axial line of polished rod portion distance 2 axial line distance of bar portion.

Resin tile can be fixed on to taking on item of pre-installing on roof using the utility model, when using the utility model, needed Position when resin tile is placed roof, is thereafter squeezed into the utility model with electric drill, can will be on resin tile and roof Item of taking be fixed together；During squeezing into, dovetail head 4 takes the lead in drilling resin tile, pierces take item thereafter, pierces and takes a process In, when cornish bit 5 is by resin tile, by dovetail head 4, punched hole further expansion, dovetail head 4 continue to pierce on resin tile Item is taken, until limit 6 bottom of double wedge contradicts and takes a surface, self-tapping screw, which is obstructed, slows down penetration rate even stopping, and worker stops Resin tile installation fixation procedure can be completed in electric drill；Since vertical watt of ontology is relatively thin softer, therefore tree can be passed through by limiting double wedge 6 Rouge watt, and taking item is hard material, limit double wedge 6 is difficult to the internal screw thread that threaded shank 3 is got being expanded into cylindrical cavity.

What the utility model setting limit double wedge 6 can limit self-tapping screw pierces depth, and it is convenient to have the characteristics that operate, and It can prevent self-tapping screw from piercing excessively compressing resin tile deformation；In addition, what resin tile was connect by setting cornish bit 5 with self-tapping screw Through-hole expands, and can prevent resin tile expanded by heating from squeezing and lead to the hole site is caused to be cracked.

More specifically, the cornish bit 5 is 2 or 3, and the cornish bit 5 is excellent along 2 axial line circumference array of polished rod portion 2 are selected as, i.e. cornish bit 5 is symmetricly set on 2 two sides of polished rod portion.

More specifically, the limit double wedge 6 is 5-15, preferably 10, forms tooth socket between adjacent limit double wedge 6, The limit double wedge 6 limits 6 circumference array of double wedge and self-tapping screw is made to pierce position around along 2 axial line circumference array of polished rod portion To when, limit double wedge 6 have uniformly acts on the pressure for taking item.

More specifically, 2 length of polished rod portion is 1/2-1.5 times of 3 length of threaded shank, preferably polished rod portion 2 and screw rod Portion 3 is isometric.

More specifically, there are two chip spaces 7, described two chip spaces 7 to extend to the threaded shank for tool on the dovetail head 4 3 form tapping.

More specifically, 1 bottom surface of screw cap has outwardly extending gasket part 8, and the gasket part 8 is circle, expands The contact area of screw cap 1 and resin tile surface avoids self-tapping screw locking from excessively damaging tree by pressure to reduce pressure between the two Rouge watt surface.

More specifically, the cornish bit 5 is fan blades or triangular edges, and wherein fan blades are as shown in Figure 1, triangle Shape blade is as shown in Fig. 2, fan blades compression moulding is simpler relative to triangular edges, convenient, and triangular edges are then more Conducive to reaming procedure.

More specifically, the cornish bit 5 and limit double wedge 6 are radially projecting.

More specifically, the screw cap 1 is hexagon cap head.

More specifically, the screw cap 1 of the integrally connected, at 4 surface zinc electroplating with iridescent yellow chromate conversion coating of polished rod portion 2, threaded shank 3 and dovetail head Reason, to improve the anti-corrosion capability of screw.

For those skilled in the art, it can make other each according to the above description of the technical scheme and ideas Kind is corresponding to be changed and deforms, and all these change and deform the guarantor that all should belong to the utility model claims Within the scope of shield.

Claims (10)

1. it is a kind of for install resin tile from reaming self-tapping screw, it is characterised in that: including successively integrally connected from top to bottom Screw cap (1), polished rod portion (2), threaded shank (3) and dovetail head (4), the polished rod portion (2) is equipped with cornish bit (5) and limit convex Tooth (6), the limit double wedge (6) are located at below cornish bit (5), limit double wedge (6) projecting edge and threaded shank (3) screw thread Tooth outer diameter is concordant, and it is prominent that cornish bit (5) the projecting edge outermost end to polished rod portion (2) axial line distance is greater than limit double wedge (6) Edge outer end is to polished rod portion (2) axial line distance out.

2. it is as described in claim 1 it is a kind of for install resin tile from reaming self-tapping screw, it is characterised in that: the reaming Knife (5) is 2 or 3, and the cornish bit (5) is along polished rod portion (2) axial line circumference array.

3. it is as described in claim 1 it is a kind of for install resin tile from reaming self-tapping screw, it is characterised in that: the limit Double wedge (6) is 5-15, and the limit double wedge (6) is around along polished rod portion (2) axial line circumference array.

4. it is as described in claim 1 it is a kind of for install resin tile from reaming self-tapping screw, it is characterised in that: the polished rod Portion's (2) length is 1/2-1.5 times of threaded shank (3) length.

5. it is as described in claim 1 it is a kind of for install resin tile from reaming self-tapping screw, it is characterised in that: the dovetail There are two chip space (7), described two chip spaces (7) extend to the threaded shank (3) and form tapping tool on head (4).

6. it is as described in claim 1 it is a kind of for install resin tile from reaming self-tapping screw, it is characterised in that: the screw Cap (1) bottom surface has outwardly extending gasket part (8), and the gasket part (8) is circle.

7. it is as described in claim 1 it is a kind of for install resin tile from reaming self-tapping screw, it is characterised in that: the reaming Knife (5) is fan blades or triangular edges.

8. it is as described in claim 1 it is a kind of for install resin tile from reaming self-tapping screw, it is characterised in that: the reaming Knife (5) and limit double wedge (6) are radially projecting.

9. it is as described in claim 1 it is a kind of for install resin tile from reaming self-tapping screw, it is characterised in that: the screw Cap (1) is hexagon cap head.

10. it is as described in claim 1 it is a kind of for install resin tile from reaming self-tapping screw, it is characterised in that: described one Screw cap (1), polished rod portion (2), threaded shank (3) and the processing of dovetail head (4) surface zinc electroplating with iridescent yellow chromate conversion coating that body connects.