CN107407311A - Concrete screw - Google Patents
Concrete screw Download PDFInfo
- Publication number
- CN107407311A CN107407311A CN201580066569.0A CN201580066569A CN107407311A CN 107407311 A CN107407311 A CN 107407311A CN 201580066569 A CN201580066569 A CN 201580066569A CN 107407311 A CN107407311 A CN 107407311A
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- Prior art keywords
- screw
- diameter
- front waist
- concrete
- concrete screw
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- 238000009434 installation Methods 0.000 claims abstract description 9
- 238000005553 drilling Methods 0.000 claims description 66
- 230000008901 benefit Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000011900 installation process Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 241001137881 Cepaea nemoralis Species 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
- F16B25/0026—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the material being a hard non-organic material, e.g. stone, concrete or drywall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
- F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
- F16B25/0057—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the screw having distinct axial zones, e.g. multiple axial thread sections with different pitch or thread cross-sections
- F16B25/0063—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the screw having distinct axial zones, e.g. multiple axial thread sections with different pitch or thread cross-sections with a non-threaded portion on the shaft of the screw
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
- F16B25/0078—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw with a shaft of non-circular cross-section or other special geometric features of the shaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
- F16B25/0084—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by geometric details of the tip
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The present invention relates to a kind of concrete screw (1), including：Head portion (3), first axle (7) and the second axle (9), head portion includes being suitable to the head component (5) for being fitted to installation tool, first axle is substantially in uniform shaft-like with basically identical the first diameter (d1), and the second axle is substantially in uniform shaft-like with basically identical Second bobbin diameter (d2).Concrete screw (1) also includes the front waist section (11) with outer surface (13) and leading section (15) and the screw thread (17) with the 3rd basically identical external diameter (d3), wherein, screw thread (17) is arranged on the second axle (9) and front waist section (11).The outer surface (13) of front waist section (11) has than the first diameter (d1), Second bobbin diameter (d2) and small the 4th diameter (d4) of the 3rd diameter (d3), and wherein, its 3rd external diameter (d3) is maintained on less 4th diameter (d4) of front waist section (11) by screw thread (17).
Description
Technical field
The present invention relates to a kind of concrete screw for being used to for Constracture unit to be attached to concrete.
Background technology
When such as railing, pipeline and the Constracture unit of other supporting constructions are installed on concrete foundation, can make
With metal expander or special concrete screw.Because concrete is stone material, so such as wood snail can not be used
The conventional bolt of nail, because wood screw can not cut blockishness incision concrete as it.Generally, bore hole is pierced coagulation in advance
In soil, concrete of the size fit into the screw thread incision surrounding for causing only concrete screw.The pre- drilling needs drilled through
With appropriate size, to ensure the grappling securely in concrete, and can by concrete screw insertion material, without
Need to use too big power.When Constracture unit is attached into concrete, many problems are overcome, such as hit reinforcing bar, for spiral shell
The cooperation of the pre- drilling tension drilled through of nail, or the drilling drilled through in advance excessive chip caused by prebored hole block.
On fairly large construction site, hundreds if not thousands of drillings may be drilled out, to build in the future
Component is attached to concrete.This be likely to result in the personnel of drilling through be not intended to when drilling through each drilling spend than it is indispensable when
Between more extra times situation.If the drilling drilled through in advance is too tight for concrete screw, or if due to drilling through
The chip for making to leave in drilling is too many --- this also results in identical effect ---, then the installation of concrete screw may be demonstrate,proved
It is bright be it is difficult, it is even unsteady because screw may cannot be completely inserted into drilling.If the personnel for performing installation attempt
By applying too big power to screw to overcome this problem, then the material character of screw may be destroyed, so that installation is deposited
In potential danger.
If the drilling drilled through in advance is not to be ideally suited for concrete screw, then will be the problem of being initially noted that
At tip of screw with maximum shock foot of hole, this drill down to drilling when be especially apparent because in the presence of due to
Drill through and leave the danger of too many chip in foot of hole.The concrete chip closely compressed can cause shallow to have been got with brill
Drilling identical mode works.The common methods of processing concrete chip are using extremely by compressed air or vacuum cleaner etc.
Drilling, to ensure to remove chip.However, this is time-consuming, therefore it is expensive process.
Some commercially also be present has the concrete screw for the cutting end section for being suitable to be enlarged to drilling.
In the case of the initial tension of cooperation between screw and drilling, using such cutting end section, cutting end section will be right
Drilling is expanded automatically, therefore too tight drilling becomes less to be difficult to solve.If chip is dispersed on the wall of drilling, this
Suitable for the problem of chip be present.
WO2014131615 A1 disclose a kind of concrete screw, and the concrete screw includes being used to expand drilling extremely
Few notch recesses.At least some sections of the recess extend to threaded base portion in the case of not interrupted screw thread coil
It is internal.Therefore, if the drilling drilled through in advance is too shallow, then this concrete screw deeper can be cut in concrete foundation.
However, the problem of such concrete screw may is that, the expansion of drilling may not be always acceptable,
Because it there may be the risk for weakening concrete structure.As drilling expands, concrete screw is installed to its most final position
Put, because concrete screw is filled with drilling, the state for checking drilling is impossible.In order to reinstall the advance of screw
Row checks and removes screw, and will imply that increases extra step for installation process, and this will be time-consuming and is therefore expensive.This
Outside, such concrete screw can expand drilling, but can not in too shallow drilling use to make drilling automatically more
Deep, therefore, the depth of drilling and the chip that may be present of foot of hole are still important, and this is in the screw of administration
It is equipped it is unsuitable in the case of be also likely to be problem.
It is, therefore, desirable to provide a kind of improved concrete screw for being used to for Constracture unit to be attached to concrete, this mixed
Coagulate the shortcomings that native screw eliminates prior art.Furthermore, it is necessary to a kind of wieldy concrete screw is without installing
During increased additional step.A kind of concrete screw is also needed to, even if the drilling drilled through in advance does not completely remove possibility
Chip, the concrete screw can also obtain and can re-use and good effect.
The content of the invention
Concrete screw according to an illustrative embodiment of the invention is used to drill through drilling in advance, rather than is directly threaded into material
In material.Therefore, it is intended to for drilling through the concrete screw of drilling in advance and being typically different than by itself proceeding to the screw in material,
I.e. preboring is not taken in the hole for receiving screw.
The purpose of the present invention is related to preamble as claimed in claim 1 and limited and by the characteristic of claim 1
The concrete screw that feature further limits.
The purpose of the present invention is related to a kind of concrete screw, and the concrete screw is suitable to insert after drilling is drilled through in advance
Enter into the drilling that chip be present, rather than be forced to drill through than needing deeper drilling.It is another object of the present invention to
The space for the chip is produced in the case of not reducing concrete screw and the pre- chucking power drilled through between drilling.Therefore,
Concrete screw is for the chip that is already present in the pre- hole drilled through --- i.e., positioned at concrete screw end section just under
The chip of side --- it is particularly useful.
The hole for being used to drill through in advance according to the concrete screw of illustrative embodiments.Concrete screw includes：Head portion,
First axle and the second axle, the head portion include being suitable to the head component for being fitted to installation tool, and the first axle is substantially in have
The first basically identical diameter it is uniform shaft-like, second axle is substantially in uniform shaft-like with basically identical Second bobbin diameter.
Concrete screw also includes front waist section, and the front waist section includes outer surface and leading section and has the 3rd basically identical external diameter
Screw thread, wherein, screw threaded arrangement is on the second axle and front waist section.Concrete screw is characterised by that the outer surface of front waist section has
Than the first diameter, Second bobbin diameter and small the 4th diameter of the 3rd diameter, and wherein, its 3rd external diameter is maintained at anterior by screw thread
On less 4th diameter of section.
This this have the advantage that, takes in preboring and retains in the borehole after the drilling of insertion concrete screw
Chip need not be removed before concrete screw insertion.This is due to that the 4th diameter of front waist section is less than first axle, the second axle
With the respective diameter of screw thread.This less 4th diameter produces the space of the chip for filling.However, because screw thread is kept
Therefore its external diameter simultaneously keeps grip of the screw thread to drilling, therefore the grip of concrete screw will not be straight because of the less 4th
Footpath and reduce.In addition, when the thread contact with front waist section, possible chip will be along screw thread in concrete screw and drilling
Between space in move up.
According to an aspect of the present invention, front waist section is shaped generally as the bar of uniform shapes, wherein, the 4th diameter is basic one
The diameter of cause.
This this have the advantage that concrete screw will be firm and easily fabricated, and with being used to filling the big of chip
Space.The bar of generally uniform shape supports the screw thread identical given in front waist section, and it is firm to become mechanical properties
Device.
According to another aspect of the present invention, front waist section is formed as frustoconical, wherein, the 4th diameter of front waist section is gradual
The diameter of reduction, wherein, the 4th diameter reduces along the direction towards leading section.
This this have the advantage that, concrete screw is by with the big space for filling chip, and due to frustum
Shape shape, chip can be migrated easily in the space.When the thread contact with front waist section, chip will be in concrete screw
Moved up in space between drilling along screw thread.Frustoconical shape produces the large volume of sky close to foot of hole
Between, due in the closelypacked chip of foot of hole less pressure will be produced, therefore will reduce by chip on screw thread upwards
The amount of power needed for migration.
According to another aspect of the present invention, the outer surface of front waist section includes at least one recess, at least one recess
Suitable for making chip move in the borehole when screw inserts.Therefore, the chip is along from the front side of concrete screw towards head
The direction movement of portion part.
This this have the advantage that the chip in drilling will reduce against the risk that the bottom of drilling compresses, because at least one
Individual recess, which will increase, can migrate and fill the space of chip.At least one recess also will be helpful to make chip along coagulation
The length movement of native screw, to avoid that chip is promoted and be compacted between the leading section of concrete screw and the bottom of drilling.For
This, the front waist section including recess of screw will be dug into the chip of the bottom in the pre- hole drilled through, and will by least one recess
Chip is removed from the bottom.It therefore, there is no need to clear up the hole drilled through in advance before concrete screw is inserted into the hole.
According to another aspect of the invention, at least one recess has semicircular surface, wherein, the semicircle table
The intersection in face and the leading section of the front waist section forms wedge angle.
This this have the advantage that recess will work as blade, and in an efficient way from the bottom of drilling
Extract chip.Thin first engagement edge of the wedge angle of the intersection in the semi-circular shaped front nose portion of front waist section by generation towards chip,
When concrete screw is rotated down in the drilling, first engagement edge lifts chip from foot of hole.Recess is in half
Round-shaped another advantage is, because abrasive disk simply can rotate to realize desired shape against concrete screw
Shape, therefore recess is readily able to manufacture and therefore manufacturing cost is low.
According to another aspect of the present invention, at least one recess has inclined surface, wherein, inclined surface and front portion
The cross-shaped portion of the leading section of section forms wedge angle.
This this have the advantage that recess will work as blade, and in an efficient way from the bottom of drilling
Extract chip.Thin first contact edge of the wedge angle of the cross-shaped portion of the leading section of inclined surface and front waist section by generation towards chip
Edge, when concrete screw is rotated down in the drilling, first engagement edge lifts chip from foot of hole.Recess has
Another advantage for having inclined surface is that chip can easily move up on the inclined-plane of recess and be transported to screw thread
Adjacent part, and by the screw thread continue to move in an efficient way away from drilling bottom.
According to another aspect of the invention, the length of front waist section the threaded portion of concrete screw length about 12%
To in the range of about 30%.
This this have the advantage that the sufficiently large part of concrete screw includes the front waist section of small diameter, small diameter
Front waist section equal sufficiently large space for fill concrete chip is produced when concrete screw is installed in drilling.
According to an aspect of the present invention, the length of front waist section the threaded portion of concrete screw length about 20% to
In the range of about 25%.
This this have the advantage that the sufficiently large part of concrete screw includes the front waist section of small diameter, small diameter
Front waist section equal sufficiently large space for fill concrete chip is produced when concrete screw is installed in drilling.
Brief description of the drawings
The preferred embodiment of the present invention is further described refer to the attached drawing.
Fig. 1 a show the stereogram of concrete screw according to the first embodiment of the invention.
Fig. 1 b show the stereogram of concrete screw second embodiment of the invention.
Fig. 2 shows the side view of the concrete screw according to third embodiment of the present invention.
Fig. 3 shows the side view of the concrete screw of the 4th embodiment according to the present invention.
Fig. 4 shows the side view of the front waist section of concrete screw according to the first embodiment of the invention.
Fig. 5 a to Fig. 5 c show the not homonymy of the front waist section of concrete screw second embodiment of the invention
View.
Fig. 6 shows the side view of the concrete screw of the 5th embodiment according to the present invention.
Embodiment
Embodiments of the present invention are described in detail with reference to the accompanying drawings.Arrive as will be appreciated, do not departing from claim
Scope in the case of, the present invention can modify in a variety of ways.Therefore, accompanying drawing should be considered as substantially being illustrative
It is rather than restricted.All accompanying drawings are not drawn on scale.
Fig. 1 a show the stereogram of concrete screw 1 according to the first embodiment of the invention.Concrete screw is used
In the hole drilled through in advance.Concrete screw 1 is suitable to Constracture unit being attached to concrete objects or ground, without being mixed from described
Fully erased possible concrete chip in the pre- drilling drilled through in solidifying local product body or ground.Concrete screw 1 is further adapted for energy
It is enough to be arranged in the concrete drill hole not cleaned, and still realize the firm anchoring of just mounted Constracture unit.
Concrete screw 1 includes head portion 3, the axle 9 of first axle 7 and second, and the head portion 3 includes being suitable to be fitted to installation tool
Head component 5, the first axle 7 are substantially in uniform shaft-like with the first basically identical diameter d1, and second axle 9 is substantially in tool
Have that basically identical Second bobbin diameter d2's is uniform shaft-like.Concrete screw 1 also includes front waist section 11, and the front waist section 11 includes appearance
Face 13 and leading section 15 and the screw thread 17 with the 3rd basically identical outside diameter d 3, wherein, screw thread 17 is arranged in the He of the second axle 9
In front waist section 11.The outer surface 13 of front waist section 11 has the smaller than the first diameter d1, Second bobbin diameter d2 and the 3rd diameter d3 the 4th
Diameter d4, and its 3rd outside diameter d 3 is maintained on the less 4th diameter d4 of front waist section 11 by screw thread 17.In the present invention
The embodiment in, the outer surface 13 of front waist section 11 also includes recess 19, and the recess 19 is suitable to make the chip in drilling in spiral shell
Nail 1 is moved when being inserted into, and thus makes the chip along from the initial of the headward part 3 in the leading section 15 of concrete screw 1
Move in direction.
The recess 19 of present embodiment has semicircular surface 21, wherein, semicircular surface 21 and the front end of front waist section 11
The cross-shaped portion of portion 15 forms wedge angle.When the leading section 15 of concrete screw 1 engages the internal drilling for installing concrete screw 1
During possibility chip at bottom, the cross-shaped portion for forming the semicircular surface 21 of wedge angle and the leading section 15 of front waist section 11 will act as leaf
Piece.The wedge angle of semicircular surface 21 is realized by following methods：Make the imagination of the semicircular surface 21 by formation such as abrasive disks
Head portion 3 of the round centralized positioning into the leading section 15 relative to concrete screw towards concrete screw 1 but unlike institute
The radius of the imaginary circle of the semicircular surface 21 of the recess 19 of formation is further from leading section 15 (referring to Fig. 4 and more detailed phase
Close description).
Front waist section 11 reduces to generate relative to the diameter of the axle 9 of first axle 7 and second of concrete screw 1 bores for filling
The space of the concrete chip in hole, and the suitable semicircular surface 21 of front waist section 11 contributes to the chip from concrete
The leading section 15 of screw 1 moves to the space around front waist section 11.In other words, the space for chip is to be provided with coagulation
Volume between the side of the drilling of native screw and the outer surface 13 of the front waist section 11 of concrete screw 1.Due to broken in drilling
Bits can be migrated to the volume, so the chip need not be removed, and also without relative to concrete screw 1
The length of screw thread 17 will drill it is pre- drill through it is more deeper than necessary depth, the screw thread 17 is that concrete screw 1 can be held when mounted
By the principal element of how many load.Even if the 4th diameter d4 of front waist section 11 is less than threaded second axle of concrete screw 1
9, the screw thread 17 of front waist section 11 still keeps its outside 3rd diameter d3, and this gives the identical bearer properties of concrete screw 1, as
With the diameter along concrete screw 1 without as any reduction.These assemblage characteristics give that concrete screw 1 is good to be held
Characteristic is carried, while generally eliminates the time-consuming work for the chip removed before mounting screw 1 in drilling.Due to that need not be
Formed for the space of chip and drilling through more deeper than necessary depth must be used as the alternative side that need not clear up the chip
Method, so drilling operation is also more efficient.Embodiment described herein can have more than one recess 19；Two recesses
19 can be very well arranged on the opposite side of concrete screw 1, and effect is moved with the chip of the increase present invention.Recess also may be used
With with for example on the other shapes described by Figure 1B.
Fig. 1 b show the stereogram of the concrete screw according to second embodiment of the invention.Except the shape of recess 19
Outside, second embodiment of the present invention is similar with the first embodiment described in Fig. 1.In the embodiment of the present invention
In, recess 19 has inclined surface 23, wherein, inclined surface 23 and the cross-shaped portion of the leading section 15 of front waist section 11 form wedge angle.
This inclined surface 23 equally intersected with the leading section 15 of concrete screw 1 is by with half of the recess 19 with first embodiment
The same mode of circular surface 21 is as blade.However, when the wedge angle of recess 19 engages with the chip, preferably
Middle chip will be pushed upwardly by inclined surface 23 and be pulled on the screw thread 17 at the rear of inclined surface 23.The width of recess
Can change, but the inclined surface 23 of recess intersects the leading section 15 always with concrete screw 1, with realize by chip from
The desired effects that the bottom of drilling removes.Preferably, the width of recess 19 will not be than the screw thread on the same side of concrete screw 1
The distance between 17 width, to keep the bearer properties of screw 1.
In the second embodiment described in the first embodiment and Fig. 1 b described in fig 1 a respectively, front waist section
Length for concrete screw 1 threaded portion length about 20%, the threaded portion is front waist section 11 together with the second axle
9.Preferred thickness of the length of first axle 7 based on the Constracture unit that will be installed to concrete and be generally not inserted into drilling.
Therefore, the threaded portion of concrete screw 1 is the factor for the bearing capacity for determining concrete screw 1.The length of front waist section 11 can
With in the range of about 12% to about the 30% of the length of the threaded portion of concrete screw 1, more preferably in concrete screw 1
Change in the range of about 20% to about the 25% of the length of threaded portion.This part is sufficiently large to realize the chip institute in drilling
The space needed, the mechanical performance without weakening concrete screw 1 on the whole in a substantial way.Describe in Fig. 1 a and Fig. 1 b
Recess 19 intersects with the leading section 15 of concrete screw 1.This causes recess 19 and the chip phase interaction positioned at the lower section of screw 1
With.This helps to ensure that recess 19 can be as the blade for migrating chip.Shape regardless of recess, this is generally all suitable
With.
Fig. 2 shows the side view of the concrete screw 1 according to third embodiment of the invention.In the implementation of the present invention
In mode, front waist section 11 is formed as the bar of substantially uniform shape.The bar of uniform shapes is straight with the 4th for basically identical diameter
Footpath d4.In this view, it is easily observed that, the 4th diameter d4 of front waist section 11 is significantly less than the He of first axle 7 of concrete screw 1
Second axle 9, so as to form the space for filling migrated chip when screw is inserted in drilling.The cloth of concrete screw 1
Put essentially identical outside diameter d 3 of the screw thread 17 with the length along screw 1 on the second axle 9 and front waist section 11.However, spiral shell
The outer surface 13 for being arranged in front waist section 11 of line 17 is with the end sections at the cross-shaped portion of the leading section 15 of front waist section 11 with spiral shell
The geometry that the leading section 15 of line 17 towards concrete screw 1 extends and is gradually reduced with width and thickness.This due to
The volume reduced caused by less thickness and width only occur in about 40% of the whole circle around the periphery of concrete screw 1 to
In the range of about 80%.With screw thread 17 from various sizes of diameter d2, d4 of the different piece of screw 1 radially equally
The situation of extension is compared, and there is the threaded area of the screw thread 17 of concrete screw 1 along screw 1 essentially identical outside diameter d 3 to make
Longer effective loaded length must be produced.This generates the concrete screw 1 with the space for chip without reducing screw 1
Bearer properties.
Fig. 3 shows the side view of the concrete screw 1 of the 4th embodiment according to the present invention.In the reality of the present invention
To apply in mode, front waist section 11 is formed as frustoconical, wherein, the 4th diameter d4 of front waist section 11 is gradually reduced.4th diameter d4
Reduce on the direction towards leading section 15.In addition to front waist section 11 is formed as frustoconical rather than bar, of the invention should
Embodiment is similar to the embodiments of the present invention described in Fig. 2.This generates the bigger space filled for chip, and
And also reduce the area of the leading section 15 of concrete screw 1.The reduction of the area of leading section 15 is also reduced in concrete spiral shell
Nail 1 when being inserted into chip can not be mobile from the lower section of concrete screw 1 and block and quilt between chip in the same process
The risk of compacting.
Fig. 4 shows the side view of the front waist section 11 of concrete screw 1 according to the first embodiment of the invention.This
The feature and function and the feature described in the explanation on accompanying drawing 1a and function phase of one embodiment are same.It is however, real first
In the view for applying mode, it is easier to it was observed that the Second bobbin diameter d2 of the semicircular in shape of recess 19, the second axle 9 width, spiral shell
4th diameter d4 of the 3rd outside diameter d 3 of line 17 and the front waist section 11 of concrete screw 1.In the first embodiment of the present invention
Front waist section 11 this side view in can also easily observe intersecting for semicircular surface 21 and the leading section 15 of screw 1
The wedge angle α in portion.Angle α can move use by the radius R for the semicircular surface 21 for changing recess 19 or along the length of screw 1
Change in the center C for the circle for obtaining semicircular surface 21.In order to realize the semicircular surface 21 of recess 19 and front waist section 11
Cross-shaped portion between leading section 15, the distance D between leading section 15 and the center C of the circle for obtaining semicircular surface 21 must
Must be identical with the radius R of the circle or more shorter than the radius R of the circle.Distance D can be changed within the scope of the invention
And/or radius, to realize the characteristic of the angle [alpha] of the cross-shaped portion of semicircular surface 21 and leading section 15 on recess 19 and mixed
Coagulating the mechanical performance of native screw 1 has the concrete screw 1 of change.The cross-shaped portion of half-round recessed 21 and leading section 15 causes recessed
Portion 21 interacts with the chip positioned at the lower section of screw 1.Which ensure that recess 19 can be as the blade for migrating chip.
Fig. 5 a to Fig. 5 c are shown in a manner of being rotated according to the concrete screw 1 of second embodiment of the invention
The different side views of front waist section 11.The feature of the second embodiment is identical with the feature described in the explanation on accompanying drawing 1b.
However, in these views of second embodiment, the shape of recess 19 and the inclined surface of recess 19 are more subtly shown
23.The inclined surface 23 of recess 19 and the surface 23 and the wedge angle α ' of the cross-shaped portion of the leading section 15 of front waist section 11 are clear
It is visible, and watched with Fig. 5 a to Fig. 5 c order, it can be readily appreciated that inclined surface 23 revolves in concrete screw 1 at it
As the blade between lower thread 17 when turning to rotate in the case of insertion.
Fig. 6 shows the side view of the concrete screw according to fifth embodiment of the invention.The feature of the embodiment
It is same with function and the feature described in the explanation on accompanying drawing 2 and function phase, but there are supplementary features：It is arranged in concrete spiral shell
Multiple deformation indicators 25 on the periphery of the first axle of nail.First axle 7 of the indicator 25 along concrete screw 1 is deformed big
Cause to extend in longitudinal direction.Except according to above-mentioned embodiment need not by concrete screw installation in the borehole before
Removing outside the chip in the drilling, the embodiment is further adapted for reusing in the multiple installation of Constracture unit, without
In the presence of the risk using the concrete screw 1 with degeneration mechanical performance.If concrete screw 1 is new, and does not have power
It is applied on the screw 1, then the direction for deforming indicator 25 will be parallel with the periphery of first axle 7.If however, concrete spiral shell
Nail 1 is used in previous installation process, and concrete screw 1 is exposed to be enough in the previous installation process
Momentum/the moment of torsion for being plastically deformed the material of concrete screw 1, then because the direction of mechanically deform deformation indicator 25 will
Relative to first axle 7 periphery it is not parallel.According to deflection, deform the direction of indicator 25 and be distributed outer with first axle 7
Week compared to will run-off the straight or distortion in appearance, so as to provide the clear effective of the mechanically deform of the material of concrete screw 1
Instruction.Therefore, user will be seen that and know that concrete screw 1 mechanically deforms, and the concrete screw 1 is not
Identical load capacity can be kept as before deformation.Then concrete screw 1 can be in time abandoned, and in its position
Use new screw 1.Therefore, the clearly vision for the mechanical performance that deformation indicator 25 will be given for concrete screw 1 carries
Show.Deformation indicator 25 can be arranged to multiple as described above, but other modifications are also possible.It can also use single
Deform indicator 25 either two deformation indicators 25 arranged in pairs or multiple or multipair deformation indicator 25.Deformation instruction
Device 25 can be formed as the protuberance on the periphery of the first axle 7 of concrete screw 1, or be formed as recess, or both
Combination.Protuberance and recess can have the shape of different shapes, such as triangle, cube, polygon or circle.Deformation
Indicator or multiple indicators 25 can also be by painting, applying the surface treatment methods such as rotatable wire brush, polishing, embossing
Formed.
The invention is not restricted to the embodiment proposed.The combination of feature between different embodiments is possible
's.Therefore, accompanying drawing and its description are considered as substantially being illustrative and not restrictive.
Claims (9)
1. a kind of concrete screw (1) for being used to drill through drilling in advance, the concrete screw (1) include：
Head portion (3), the head portion (3) include being suitable to the head component (5) for being fitted to installation tool,
First axle (7), the first axle (7) be substantially in it is uniform shaft-like with basically identical the first diameter (d1),
Second axle (9), second axle (9) be substantially in it is uniform shaft-like with basically identical Second bobbin diameter (d2),
Front waist section (11), the front waist section (11) include outer surface (13) and leading section (15) and,
Screw thread (17), the screw thread (17) have the 3rd basically identical external diameter (d3), wherein, the screw thread (17) is arranged in institute
State on the second axle (9) and the front waist section (11),
Characterized in that, the outer surface (13) of the front waist section (11) has than first diameter (d1), described by second
Diameter (d2) and small the 4th diameter (d4) of the 3rd diameter (d3), and wherein, the screw thread (17) is by the screw thread
(17) the 3rd external diameter (d3) is maintained on less 4th diameter (d4) of the front waist section (11).
2. concrete screw (1) according to claim 1, wherein, the front waist section (11) is shaped generally as uniform shapes
Bar, wherein, the 4th diameter (d4) is basically identical diameter.
3. concrete screw (1) according to claim 1, wherein, the front waist section (11) is formed as frustoconical, its
In, the 4th diameter (d4) of the front waist section (11) is the diameter being gradually reduced, wherein, the 4th diameter (d4) along
Reduce towards the direction of the leading section (11).
4. the concrete screw (1) according to any one of preceding claims, wherein, the front waist section (11) it is described
Outer surface (13) includes at least one recess (19), and at least one recess (19) is suitable to make when the screw (1) inserts
Chip moves in the borehole, thus makes the chip along from the leading section (15) of the concrete screw (1) towards institute
State the direction movement of head portion (3).
5. concrete screw (1) according to claim 4, wherein, the recess is described with the concrete screw (1)
Leading section (15) is intersecting.
6. the concrete screw (1) according to claim 4 or 5, wherein, at least one recess (19) has semicircle
Surface (21), wherein, the semicircular surface (21) and the cross-shaped portion of the leading section (15) of the front waist section (11) are formed
Wedge angle (α).
7. the concrete screw (1) according to claim 4 or 5, wherein, at least one recess (19) has nauropemeter
Face (23), wherein, the inclined surface (23) and the cross-shaped portion of the leading section (15) of the front waist section (11) form wedge angle
(α’)。
8. the concrete screw (1) according to any one of preceding claims, wherein, the length of the front waist section (11)
In the range of about 12% to about the 30% of the length of the threaded portion of the concrete screw (1).
9. the concrete screw (1) according to any one of preceding claims, wherein, the length of the front waist section (11)
In the range of about 20% to about the 25% of the length of the threaded portion of the concrete screw (1).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1451532A SE538636C2 (en) | 2014-12-12 | 2014-12-12 | Concrete screw |
| SE1451532-4 | 2014-12-12 | ||
| PCT/SE2015/051258 WO2016093759A1 (en) | 2014-12-12 | 2015-11-24 | Concrete screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107407311A true CN107407311A (en) | 2017-11-28 |
Family
ID=56107802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580066569.0A Pending CN107407311A (en) | 2014-12-12 | 2015-11-24 | Concrete screw |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3230604A4 (en) |
| CN (1) | CN107407311A (en) |
| SE (1) | SE538636C2 (en) |
| TW (1) | TWI668376B (en) |
| WO (1) | WO2016093759A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2063745A (en) * | 1979-11-24 | 1981-06-10 | Schewe Robert Kg | Self-tapping screw for plastics parts |
| DE3242926A1 (en) * | 1982-11-20 | 1984-05-24 | Schrauben Betzer GmbH & Co KG, 5880 Lüdenscheid | Self-tapping screw |
| CN1077005A (en) * | 1992-03-02 | 1993-10-06 | 伊利诺斯工具公司 | Improved concrete fastener |
| US5919020A (en) * | 1995-01-18 | 1999-07-06 | Walther; Uli | Screw |
| EP1001178A2 (en) * | 1998-11-13 | 2000-05-17 | TOGE-Dübel A. Gerhard KG | Screw for gas concrete |
| US6149363A (en) * | 1998-10-29 | 2000-11-21 | Huck International, Inc. | Lightweight threaded fastener and thread rolling die |
| DE29824767U1 (en) * | 1998-02-25 | 2002-08-29 | Ludwig Hettich & Co., 78713 Schramberg | screw |
| CN2934706Y (en) * | 2006-07-07 | 2007-08-15 | 昕群企业股份有限公司 | Screw |
| CN101160471A (en) * | 2005-04-16 | 2008-04-09 | 阿图尔-费希尔股份公司费希尔厂 | Thread-cutting masonry screw |
| CN102242754A (en) * | 2010-05-10 | 2011-11-16 | 喜利得股份公司 | Thread-tapping concrete screw |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19536786A1 (en) * | 1995-04-15 | 1996-10-17 | Fischer Artur Werke Gmbh | Fastening element with expansion element |
| AU1188297A (en) * | 1997-01-14 | 1998-08-07 | Synthes Ag, Chur | Pedicle screw with double thread |
| US20020168245A1 (en) * | 2001-05-10 | 2002-11-14 | Hsu Kuo-Tai | Threaded screw having cutting notch structures |
| JP2003343530A (en) * | 2002-05-30 | 2003-12-03 | Shinjo Seisakusho:Kk | Drill screw for steel house |
| DE102005058391A1 (en) * | 2005-12-07 | 2007-06-14 | Fischerwerke Artur Fischer Gmbh & Co. Kg | Thread cutting screw, especially concrete screw |
| US8480343B2 (en) * | 2010-01-13 | 2013-07-09 | National Nail Corp. | Fastener, installation tool and related method of use |
| CN202431697U (en) * | 2011-12-16 | 2012-09-12 | 吴江市黎里科龙铁艺装饰材料厂 | Multi-section screw |
-
2014
- 2014-12-12 SE SE1451532A patent/SE538636C2/en unknown
-
2015
- 2015-11-24 EP EP15867657.7A patent/EP3230604A4/en not_active Withdrawn
- 2015-11-24 WO PCT/SE2015/051258 patent/WO2016093759A1/en active Application Filing
- 2015-11-24 TW TW104138938A patent/TWI668376B/en active
- 2015-11-24 CN CN201580066569.0A patent/CN107407311A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2063745A (en) * | 1979-11-24 | 1981-06-10 | Schewe Robert Kg | Self-tapping screw for plastics parts |
| DE3242926A1 (en) * | 1982-11-20 | 1984-05-24 | Schrauben Betzer GmbH & Co KG, 5880 Lüdenscheid | Self-tapping screw |
| CN1077005A (en) * | 1992-03-02 | 1993-10-06 | 伊利诺斯工具公司 | Improved concrete fastener |
| US5919020A (en) * | 1995-01-18 | 1999-07-06 | Walther; Uli | Screw |
| DE29824767U1 (en) * | 1998-02-25 | 2002-08-29 | Ludwig Hettich & Co., 78713 Schramberg | screw |
| US6149363A (en) * | 1998-10-29 | 2000-11-21 | Huck International, Inc. | Lightweight threaded fastener and thread rolling die |
| EP1001178A2 (en) * | 1998-11-13 | 2000-05-17 | TOGE-Dübel A. Gerhard KG | Screw for gas concrete |
| CN101160471A (en) * | 2005-04-16 | 2008-04-09 | 阿图尔-费希尔股份公司费希尔厂 | Thread-cutting masonry screw |
| CN2934706Y (en) * | 2006-07-07 | 2007-08-15 | 昕群企业股份有限公司 | Screw |
| CN102242754A (en) * | 2010-05-10 | 2011-11-16 | 喜利得股份公司 | Thread-tapping concrete screw |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3230604A4 (en) | 2018-10-10 |
| SE538636C2 (en) | 2016-10-04 |
| TWI668376B (en) | 2019-08-11 |
| SE1451532A1 (en) | 2016-06-13 |
| WO2016093759A1 (en) | 2016-06-16 |
| TW201625851A (en) | 2016-07-16 |
| EP3230604A1 (en) | 2017-10-18 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171128 |