CN108194472A - A kind of expansion bolt - Google Patents
A kind of expansion bolt Download PDFInfo
- Publication number
- CN108194472A CN108194472A CN201711454965.8A CN201711454965A CN108194472A CN 108194472 A CN108194472 A CN 108194472A CN 201711454965 A CN201711454965 A CN 201711454965A CN 108194472 A CN108194472 A CN 108194472A
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- Prior art keywords
- expansion bolt
- spreading
- screw
- hole
- expansion
- Prior art date
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- 230000007480 spreading Effects 0.000 claims abstract description 72
- 238000002347 injection Methods 0.000 claims description 28
- 239000007924 injection Substances 0.000 claims description 28
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 210000003205 muscle Anatomy 0.000 description 15
- 229910003460 diamond Inorganic materials 0.000 description 5
- 239000010432 diamond Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000005553 drilling Methods 0.000 description 4
- 241001074085 Scophthalmus aquosus Species 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000009738 saturating Methods 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 241001137881 Cepaea nemoralis Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009760 electrical discharge machining Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000002699 waste material 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
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
- F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
- F16B13/063—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander
- F16B13/066—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander fastened by extracting a separate expander-part, actuated by the screw, nail or the like
- F16B13/068—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander fastened by extracting a separate expander-part, actuated by the screw, nail or the like expanded in two or more places
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
It is proposed that a kind of expansion bolt (1), it is simple, cylindrical, there are one the screws (9) for being used to make expansion bolt (1) spreading for tool, the expansion bolt has hole (2), it has diameter step (3), and it is divided into spreading tenon (5) by gap (4), they extend in about 3/4 bolt that rises (1) length.Maximum gauge step (3) is given at screw (9) at the axial fulcrum in expansion bolt (1), it can hit expansion bolt (1) by screw (9).The effect of diameter step (3) is that screw (9) is made well to be fed with the screw-in torque being slowly increased when screwing in.Diameter step (3), which also acts as, makes expansion bolt (1) in the effect for being anchored big spreading inside the depth on basis.
Description
Technical field
The present invention relates to a kind of expansion bolts with claim 1 preamble feature.
Background technology
An expansion bolt as known to patent US 5,221,167, it can be by hitting pin expansion and it is possible thereby to anchor
It is connected on lower margin basis the inside.Known expansion bolt is tubulose and has the upper penetrating hole in longitudinal direction, can hit wherein
Pin.Hole shunk in the front end position of expansion bolt by two land ranks and this position expansion bolt axial direction
There are two gaps that is cross one another, crossing expansion bolt for tool in plane, and the expansion bolt in the position of gap is divided into four by them
A spreading tenon.Position cracking, having spreading tenon is referred to herein as spreading position.Spreading position is in known expansion bolt length
About 20% on extend.
Invention content
It is a primary object of the present invention to provide expansion bolt that is a kind of simple and can with favourable price processing.
To achieve the above objectives, the technical solution adopted by the present invention is：This purpose passes through claim 1 according to the present invention
Feature be achieved.Expansion bolt according to the invention is not the bolt of nail expansion, but the bolt of screw expansion, it is logical
Cross screw in screw to it is best penetrating and inside the longitudinally extending hole of expansion bolt spreading.It can make object pass through screw
Fixed, there is no the hidden danger that screw is pulled out from expansion bolt.Expansion bolt according to the invention is suitable for inserting thoroughly and matches,
That is, suitable for across want fixed object by expansion bolt be placed in anchor basis the inside.Screw is being screwed in expansion bolt
The nose threads helical pitch of screw is embedded in expansion bolt on the diameter step in hole and thus reliably ensures screw respectively during the inside
It is fed into expansion bolt inside the narrower hole section of each linking.It is small and with from hole section to hole to screw in when power starts
Section spreading and increase.Because it is most narrow in the hole section of expansion bolt mesoporous up front, therefore spreading is most strong there
It is strong, that is, to play the role of most consumingly spreading being anchored basic internal below surface, thus avoid the brill in basis is anchored
What power was formed on the entrance of hole splits and is anchored in well inside the depth for being anchored basis.
Make expansion bolt gap according to the invention and thus make spreading tenon and spreading position more than expansion bolt half
Extend in length, be achieved in relatively short expansion bolt compared with spreading span access location length.Make the stepped portions in hole also big
Extend in expansion bolt half length, be used to implement big spreading length compared with expansion bolt length.Preferably make gap one
Until the maximum gauge position of expansion bolt mesoporous.
The expansion structure regulation of the present invention, the screw is other than the spreading position of cracking of expansion bolt or maximum straight
There is axial fulcrum, it can be hit inside expansion bolt to the hole on anchor basis by screw on diameter step.The expanding screw
Bolt can be driven into anchor basis the inside by hitting the head of screw for the screw being added to inside the non-vent portion of expansion bolt.By
This passes through expansion bolt fixed parts is wanted to strike anchor basis the inside, without expansion bolt long in this way, are made
It in placement state across its whole thickness wears and wants fixed parts thoroughly.It is possible thereby to for different thickness in saturating inserting is matched
The parts of degree use expansion bolt.Screw is screwed in after expansion bolt is hit and thus makes expansion bolt spreading and is anchored
It is being anchored inside basis.The embodiment of the present invention can make expansion bolt pass through screw thoroughly inserting timing pass through parts shock
To being anchored basis the inside, if bore dia in parts is less than the bore dia being anchored in basis.To this one
Example is drilled in one section of timber for want fixed object is used as by diamond bit and in addition not interruptedly in conduct
It is anchored in the stone or concrete on basis and drills.Hole at this in one section of timber is often kept than in stone or concrete
Hole less diameter.Nevertheless, axial direction of the screw on the hole maximum gauge step in expansion bolt according to the invention is consolidated
Surely it is enough expansion bolt is made to pass through one section of timber or fixed parts is generally wanted to strike anchor basis the inside by screw.
In the preferred development structure of the present invention, there are two spreading tenons for the expansion bolt tool, they can be considered as semicircle
Column hull shape.Screw thread is cut to when being screwed into inside expansion bolt and in screw thread inside expansion bolt spreading tenon
When, the hidden danger that the small number of spreading tenon extended in larger circumferential segment makes spreading tenon separated is less than compared with small circumference section
The greater number of spreading tenon of upper extension.
The hole section for forming diameter step especially has essentially identical length, that is, diameter step has basic phase each other
Same axial distance.The non-vent portion of the expansion bolt be the diameter step axial distance that is mutually linked about half to about
Twice, i.e. the non-vent portion length of expansion bolt is about one of the hole section for forming diameter step longitudinally through expansion bolt
Partly to about twice.That is, non-vent portion is relatively short compared with expansion bolt length, it is to be significantly less than expansion bolt half long
On degree, for example extend on about the 1/3 to 1/5 of expansion bolt length.It is divided into such as two due to diameter step and in expansion bolt
Screw guides well when screwing in during a or four spreading tenons, even if thus being taken in expansion bolt section that is short, not cracking
The hidden danger that side protrudes gap for screw spreading spreading tenon is also small.
It has confirmed, fixation bigger in basis is anchored of the expansion bolt of spreading, even several times ground bigger, if described
When screw is screwed in sizable core diameter and corresponding smaller thread depth.Therefore the expansion structure regulation of the present invention,
Screw has the thread depth of about 0.5mm.Thread depth is the radial distance from screw thread top to thread core.The thread core of screw is straight
Diameter is substantially equal or larger than the aperture in expansion bolt behind maximum gauge step, i.e., second largest aperture.
The expansion structure regulation of the present invention, the foremost diameter step in the hole in expansion bolt is generally within expansion bolt
Mid-length.Prolong in half length of the minimum diameter section substantially in expansion bolt of this expansion structure mesoporous of the present invention
It stretches.This expansion structure of the present invention has obtained in test good fixation of the expansion bolt of spreading in basis is anchored
Value.
The expansion structure regulation of the present invention has outwardly projecting protrusion in the non-vent portion of expansion bolt.The protrusion can
To be made of muscle.They resist expansion bolt and are rotated together when screwing in screw, especially when the hole of placement expansion bolt is due to example
When there is sizable diameter such as hole error.It is required when preventing from being rotated together for starting to screw in, screws in screw
A distance, spreading prevent expansion bolt from rotating together.
The improvement project of the present invention provides hollow protrusion, for example, bending or V-arrangement muscle.Hollow protrusion can be with suitable
Thus the outside top pressure expansion bolt of small power makes expansion bolt although protrusion also can be added to minor diameter with appropriate power
Inside hole.
The expansion structure regulation of the present invention, the protrusion are opened wide towards expansion bolt medial surface.The protrusion can
By narrow drilling top pressure slightly inward, expansion bolt is thus made to be readily incorporated into inside narrow drilling.Nevertheless, it is revolved in screw
Enter to protrusion during wide drilling the inside prevent expansion bolt rotate together be slightly less than protrusion towards on the inside of expansion bolt face closure when
It waits, the circumferential wall of wherein expansion bolt is also successively formed.Another advantage towards the open protrusion of expansion bolt medial surface is,
Injection mold for processing expansion bolt and expansion bolt are more easily processed after injection more easily for hollow protrusion
Demoulding.
The expansion structure regulation of the present invention, the spreading tenon are mutually interconnected on its front end by theoretical disconnected position
It connects.The rear end position that front end does not crack far from expansion bolt adds in screw across it.Theoretical disconnected position means this company
It connects, they weaken preferably by material, such as thin-walled, cutting or similar structures are disconnected when screwing in screw and spreading tenon spreading.
The present invention this expansion structure in expansion bolt on its front end by connecting the theoretical disconnected position of spreading tenon in circumference
It is closed on direction.The advantages of this expansion structure of the present invention is that timber will not squeeze when squeezing into inside expansion bolt to timber
Enter to inside the gap between spreading tenon, make spreading tenon mutually open-top and expansion bolt is made to split.
The expansion structure regulation of the present invention, the expansion bolt have coarse or plucking surface.Such as pass through
Corresponding coarse cavity surface for processing the injection mold of expansion bolt can process coarse surface.Such as pass through spark
Roughness can be processed or be adjusted to corrosion.Rough surface improves expansion bolt and the frictional engagement being anchored between basic middle hole wall,
Expansion bolt is anchored inside the hole and improves the expansion bolt of spreading and is in the fixation in being anchored basis and while screwing in screw
Spreading prevents the expansion bolt from rotating together.In addition coarse surface enlarged surface and thus increase expansion bolt be anchored basis
In fix and prevent from rotating together when screwing in screw.The effect of finished surface compares big in small expansion bolt diameter
Become apparent from expansion bolt diameter because surface increase for small diameter in ratio bigger.
The expansion structure regulation of the present invention, the expansion bolt does not have barb on its excircle and with it
Constant or (or reducing) cross section for only not increasing in two directions in one direction, in length.It is possible thereby to
Expansion bolt is made axially to be detached from from injection mold, which need not be in the die cavity longitudinal direction for forming expansion bolt in order to open
It is upper to separate.General injection mold be in an axial plane it is separated and be transverse to die cavity axially open.This injection mold
It is the content of claim 13.Mold can be injected separately in order to process, is indulged in order to which expansion bolt demoulding need not be transverse to die cavity
To opening.Expansion bolt demoulding is axially realized being demoulded from expansion bolt with core.There is no need to perpendicular to injection mold
Trepanning pulls out core.In addition can be set in the Different Plane of injection mold it is multiple for be molded multiple expansion bolts die cavitys and
It needs not necessarily need to be provided inside a plane, when such case is that injection mold is opened in an axial plane of die cavity.
Description of the drawings
Claims and drawing is combined by following description of the embodiment of the present invention and provides other feature of the invention.Each spy
Sign can be realized in an embodiment of the present invention in any combination independent or multiplely.In attached drawing：Fig. 1 is illustrated with axial cross section
Go out expansion bolt according to the invention, Fig. 2 shows the expansion bolt of Fig. 1 with spreading state, and Fig. 3 illustrates Fig. 1 with end face and expands
The rear end of bolt, Fig. 4 show the injection mold of the expansion bolt for manuscript 1, and Fig. 5 is shown ... in a side view according to the present invention
Expansion bolt second embodiment, Fig. 6 illustrates the expansion bolt of Fig. 5 with axial cross section, and Fig. 7 compared with Fig. 6 to rotate 45
The axial cross section of the sectional plane of degree illustrates the expansion bolt of Fig. 5, and Fig. 8 shows Fig. 5 expansion bolts from front (in Figure 5 from a left side
Face) end view drawing, without screw, Fig. 9 shows end view drawing of Fig. 5 expansion bolts from below (in Figure 5 from the right side), without spiral shell
Nail, Figure 10 shows the stereogram of Fig. 5 expansion bolts, without screw.
Specific embodiment
It is described below to disclose the present invention so that those skilled in the art can realize the present invention.It is excellent in being described below
Embodiment is selected to be only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.
] expansion bolt 1 shown in FIG. 1, according to the invention integrally by injection be made.It is it is cylindrical and
And with wear thoroughly in the longitudinal direction, i.e. axial hole 2, it makes hole on 1 longitudinal direction of expansion bolt with diameter step 3 by them
It shrinks.Diameter step 3 is that land is stepped in the present embodiment, but they can also have other shapes, such as conically
With more than 90 °, preferably over 120 ° of cone angles.Make segmentation of the tool of hole 2 there are four constant diameter by three diameter steps 3,
The segmentation of wherein maximum gauge is slightly longer than its excess-three segmentation in hole 2, they are isometric.Three diameter steps 3 and four tools
The quantity that the hole 2 of constant diameter is segmented is not enforceable for the present invention.
Expansion bolt 1 is made to be divided into four spreading tenons 5 by the gap 4 in two mutual decussate axial planes.Seam
Gap 4 is unlimited on the front end of expansion bolt 1, and wherein this end is known as front end, and hole 2 has minimum straight on it
Diameter.Gap 4 and related spreading tenon 5 extend to 2 sections of the hole with maximum gauge, that is, are grown in the expansion bolt 1 more than half
On degree, i.e. in 1 length of about 3/4 expansion bolt.Gap 4 and spreading tenon 5 limit the spreading position 6 of expansion bolt 1.On rear end
Connection is not cracked, tubulose shank 7.This end of expansion bolt 1 is known as rear end, has in the end mesoporous 2 maximum straight
Diameter.Radially protrude outward the hollow muscle 8 (referring to Fig. 3) of two V-arrangements in cross-section opposed to each other from shank 7, they with it is swollen
Swollen bolt 1 is integrated.
As shown by a dotted line in Fig. 1, the shank 7 of expansion bolt 1 can be longer, that is, about twice to 2.5
Times remaining formed diameter step 2 segment length of hole.
In order to which expansion bolt 1 described in spreading has screw 9, it is for example with wood snail line.The major diameter of thread or name of wood screw 9
Adopted diameter is substantially big as the diameter in 2 sections of the hole of maximum gauge, and thus screw 9 has axial branch on maximum gauge step 3
Point.
As seen in fig. 2, expansion bolt 1 is matched, with so-called inserting i.e. across wanting fixed zero
Through-hole 10 in component 11 is placed in 12 the inside of hole for being anchored basis 13.By screw 9, (it is added to expanding screw to expansion bolt 1
The inside of 1 shank of bolt 7 is until acting against on maximum gauge step 3 (as illustrated in figure 1)) across wanting fixed parts 11
In through-hole 10 be added to the inside of through-hole 12 for being anchored basis 13.Screw 9 is on the 2 maximum gauge step 3 of hole in expansion bolt 1
Axial fulcrum expansion bolt 1 can be made to strike the inside of hole 12 relative to 1 undersize of expansion bolt.Axial fulcrum avoids
The spreading when striking 12 the inside of hole of expansion bolt 1.If fixed parts 11 is wanted for example to be made and pass through of timber
The saturating drill straight of diamond bit is connected to 13 the inside of anchor basis, then occurs, through-hole 10 has in fixed parts 11 are wanted than logical
It is interruptedly smaller not straight in the hole 12 that 13 the inside of anchor basis drills out for example made of concrete to cross same diamond bit
Diameter.Nevertheless, axial fulcrum of the screw 9 of expansion bolt 1 on the maximum gauge step 3 in the hole of expansion bolt 1 12 this
Sample is big, makes expansion bolt 1 can be to pass through diametrically smaller in fixed parts 11 are wanted by hammering the head of screw of screw 9
Through-hole 10 be added to the inside of hole 12 for being anchored 13 the inside of basis.This is equally applicable to such case, in basis 13 is anchored
Hole 12 is for example since the diamond bit of abrasion has relative to 1 undersize of expansion bolt and is wanting fixed parts 11
In through-hole 10 have due to same diamond bit drilling also less diameter.
As shown in Fig. 2, hollow muscle 8 is by the shank 7 of the inside top pressure contact expansion bolt 1 of the wall body in hole 2.They are in another brill
Prevent expansion bolt 1 from being rotated together when screwing in screw 9 as rotation insurance inside hole.
Screw 9 is screwed into 1 the inside of expansion bolt simultaneously after hole 12 the inside of the expansion bolt 1 to anchor basis 13 is added in
Thus make 1 spreading of expansion bolt and be anchored in 13 the inside of anchor basis.Spreading tenon is extremely large shown in fig. 2.It is revolving
The front end lead of screw thread of screw 9 is embedded into 5 the inside of spreading tenon when reaching diameter step 3 respectively when entering screw 9, thereby guarantees that
Reliably the feeding and slowly improving torque inside expansion bolt 1 of screw 9, thus reduces the hidden danger that expansion bolt 1 rotates together.
Spreading tenon is made to become larger with the basic 13 increased depth of anchor by the step contraction in 1 hole 2 of expansion bolt, that is, to make spreading
With with the increase maximum with being anchored basic 13 surface distances.Diameter step 3 can be construed to hinge, and spreading tenon 5 exists on it
It is deflected outward during spreading.
Fig. 4 shows the injection mold 14 for processing expansion bolt 1.Injection mold 14 has cylindrical hole shape die cavity 15, it
It is opened wide on two ends.Injection mold 14 is not separated, it cannot be transverse to, and die cavity 15 is axial to be opened.
Punch die 16,17 is stretched out to 15 the inside of die cavity from two sides, and one of punch die 16 is cylindrical and only stretches
It is a bit of into 15 the inside of die cavity.Another punch die 17 corresponds to 1 hole 2 of expansion bolt and forms diameter step.In addition it extend into die cavity 15
The static muscle 18 in the inside four, they are arranged on inside decussate 15 axial plane of die cavity each other.Muscle 18 be it is static,
Its internal edge corresponds to the hole 2 of expansion bolt 1 or the diameter step of punch die 17 forms step.Injection mold 14 is preferably provided with perhaps
Multimode cave 15, they can be for example arranged on inside imaginary grid, for processing the swollen of respective numbers inside injection mold
Swollen bolt 1.The punch die 17 that diameter step is formed after injection is axially pulled out from the die cavity 15 of injection mold 14, another punch die
16 axially move to 15 the inside of die cavity and knocking-on expansion bolt 1.Expansion bolt 1 has gap, the muscle in knocking-on expansion bolt 1
18 are immersed in inside gap.
The expansion bolt 1 have constant excircle, hole 2 only on a longitudinal direction of expansion bolt 1 inside it
It increases (or reduce, according to the observation direction).Hollow muscle 8 prolongs on the longitudinal direction with setting 4 the inside of longitudinal slot in an axial plane
It stretches.Thus making expansion bolt 1, without being transverse to, die cavity 15 is axial to open injection mold 14 from the axial demoulding of injection mold 14.
Expansion bolt 1 being shown in Fig. 5 to 10, according to the invention equally integrally passes through injection molding.It is round
Cylindricality and with penetrating in the longitudinal direction, axial hole 2, the latter has diameter step 3, is being expanded across diameter step hole 2
It is shunk from right to left from back to front, in Fig. 5 to 7 on the longitudinal direction of bolt 1.There are two diameters for 1 hole 2 of the expansion bolt tool of Fig. 5 to 7
Step 3, hole 2 is divided into three sections with constant diameter by them.The diameter step 3 of front end is generally within the vertical of expansion bolt 1
To center, the front end rigion in hole 2 is thus made to extend in the half length of expansion bolt 1 substantially.2 back segment of hole with maximum gauge
Interlude between slightly longer than two diameter steps 3.All expansion bolts 1 and its diameter are independently isometric, they are in this implementation
When diameter is, for example, 6,8,10,12 and 14mm, length is 30mm in example.
Expansion bolt 1 is divided by two spreading tenons 5 by the gap 4 in axial plane, they have the shape of circumference half-shell
Shape.Sectional plane is located inside slot plane in the figure 7, and sectional view is rotated with it into 45 degree in figure 6.By only two almost
The spreading tenon 5 extended on the circumferencial direction of 180 degree makes the screw thread 19 of screw 9 separate the hidden danger smaller of spreading tenon 5, if screw 9
When being screwed into 1 the inside of expansion bolt.Screw thread 19 quite minutely cuts spreading tenon 5, if spreading tenon 5 is in the circumference of bigger
When extension in range.
Gap 14 and relevant spreading tenon 5 extend on more than 1 length of half expansion bolt, i.e., about 9/10 expanding screw
Extend in 1 length of bolt, tubulose that is relatively short, closing in a circumferential direction is thus retained on the rear end of expansion bolt 1
Shank 7, it is only the 1/10 of 1 length of expansion bolt.
The expansion bolt 1 of Fig. 5 to 10 can have common wood screw as screw as the expansion bolt 1 of Fig. 1 to 3
9.The expansion bolt 1 of Fig. 5 to 10 has screw special in the present embodiment, it has sharp screw thread 19, i.e., is equally wood snail line, it
It is cut to inside the plastics of expansion bolt 1 when screwing in screw 9.In fig. 8 to 10 in order to become apparent from being shown without the swollen of screw 9
Swollen bolt 1.The screw thread 19 of screw 9 has sizable core diameter and small thread depth.Thread depth is that screw thread 19 pushes up and spiral shell
The radial distance of line core.In the present embodiment thread depth be 0.5mm, the outer diameter of screw thread 19 with maximum gauge hole 2 after
The internal diameter for holding section is equally big.The screw thread core diameter of screw 9 is big alternatively, as in this reality substantially as the diameter of 2 interlude of hole
It applies like that or even bigger in example.The expansion bolt 1 for making anchor power, i.e. spreading by using screw special 9 is being anchored inside basis
Fixation much larger than the common wood screw with larger thread depth and smaller core diameter.Pull-out in concrete test to
Go out the anchor power of three times bigger.The expansion bolt of Fig. 1 to 3 can also be used, the screw special 9 with Fig. 5 to 7.
Placement with the expansion bolt 1 for realizing Fig. 5 to 10 described in Fig. 2 like that, therefore please refer to corresponding embodiment.Pass through
Hammering, which passes through expansion bolt 1, wants fixed parts to be added to anchor basis the inside, and hammering can also be mechanically for example logical
It crosses brill hammer to apply, on 9, screw, it is sufficient that axial fulcrum is on the maximum gauge step 3 in 1 hole 2 of expansion bolt, use
The narrow through-hole in fixed parts is wanted to be added to inside the hole for being anchored basis in expansion bolt 1 is also passed through.Screw thread 19 exists
Axial fulcrum on maximum gauge step 3 prevents from splitting when squeezing into expansion bolt 1 by hammering 9, screw.
Expansion bolt 1 is made to be anchored spreading and anchor inside basis to 1 the inside of expansion bolt by screwing in screw 9.Spreading
5 axially guiding screw 9 of tenon and although long gap 4 and short shank 7 is also prevented from, 9 side of screw passes through between spreading tenon 5
It stretches in gap 4.
Torque when screwing in screw 9 is slowly increased, and thus reduces the hidden danger that expansion bolt 1 rotates together.Existed by hole 2
Being shunk to step in expansion bolt 1 makes spreading tenon become larger in increased depth in basis is anchored.
Spreading tenon 5 is made mutually to be interconnected in a circumferential direction by theoretical disconnected position 20 on its front end far from shank 7
It connects.Theoretical disconnected position 20 is the thin-walled material for having small cross section.In spreading, theory disconnected position 20 splits, if screw
9 close to them or when reach them.Theoretical disconnected position 20 prevents spreading tenon 5 from undesirably shifting to an earlier date spreading and in the limit
In the case of expansion bolt 1 split when being added to and being anchored inside basis, it will for example be fixed in saturating inserting is matched by being used as
Parts timber realize.
There are two the outwardly projecting hollow muscle 8 of V-arrangement for the tool of expansion bolt 1 of Fig. 5 to 10 in 7 position of shank.With Fig. 1 to 3
Difference, hollow muscle 8 open wide in Fig. 5 to 10 towards expansion bolt medial surface.Hollow muscle 8 is swollen as being prevented when screwing in screw 9
The insurance that swollen bolt 1 rotates together.Because they are hollow and are opened wide towards 1 medial surface of expansion bolt, thus they
It is easy to be deformed inward inside narrow hole.Nevertheless, they inside big hole with the hollow muscle 8 of the expansion bolt of such as Fig. 1 to 3
The almost the same fixation for preventing expansion bolt 1 from rotating together is equally obtained when screwing in screw 9, the hollow muscle of Fig. 1 to 3 is at it
It is closed by shank 7 such as is solid muscle in root.
In injection mold as the expansion bolt described in Fig. 1 to 3 manuscript 5 to 10 expansion bolt 1, injection mold
Be it is indiscrete and cannot be transverse to be formed expansion bolt 1 die cavity axially open.It is axial to realize that expansion bolt 1 demoulds, to
That the open muscle 8 of 1 medial surface of expansion bolt simplifies injection mold and easy expansion bolt 1 demoulds and reduces waste product.
In order to which enlarged surface makes expansion bolt 1 have plucking or coarse surface.This improves it in basis is anchored
It is fixed.Enlarged surface compared with surface area with minor diameter expansion bolt when ratio when with major diameter expansion bolt 1 more
Greatly.Can plucking be processed by the corresponding roughness of injection mold die cavity wall body, expansion bolt 1 is processed inside injection mold.
Cavity surface roughness can for example be processed by burn into especially spark erosion and adjustment.
Basic principle, main feature and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.The present invention claims protection domain by appended claims and its
Equivalent defines.
Claims (10)
1. a kind of expansion bolt with hole (2) extend in the longitudinal direction, preferably penetrating and gap (4), which, which has, is permitted
More diameter steps (3), the gap (4) extend on the spreading position (6) of expansion bolt (1) and expansion bolt (1) are made to rise
It opens and is divided into spreading tenon (5) in position (6), which is characterized in that the expansion bolt (1) has screw (9), it can be screwed into hole
(2) make inside and thus expansion bolt (1) spreading, make gap (4) and thus make spreading tenon (5) more than expansion bolt (1) one
Extend in half length and the stepped portions in hole (2) is made to extend on more than expansion bolt (1) half length, the spreading tenon
(5) it is connected with each other on end in front of it, far from expansion bolt (1) non-vent portion by theoretical disconnected position (20)；
The expansion bolt (1) has the surface of plucking；The expansion bolt (1) does not have barb on its excircle and it is outer transversal
Face is constant in length or only increases in one direction；The injection mold (14) is not transverse to injection mold (14)
Die cavity (15) longitudinally opens wide, die cavity molded expansion bolt (1) in injection.
2. expansion bolt as described in claim 1, which is characterized in that the screw (9) is in the spreading that cracks of expansion bolt (1)
There is axial fulcrum, it can hit expansion bolt by screw (9) other than position (6) or on maximum gauge step (3)
(1) to hole (12) the inside.
3. expansion bolt as described in claim 1, which is characterized in that there are two spreading tenons (5) for expansion bolt (1) tool.
4. expansion bolt as described in claim 1, which is characterized in that the diameter step (3) has essentially identical each other
Axial distance.
5. expansion bolt as claimed in claim 4, which is characterized in that the non-vent portion length of the expansion bolt (1) is
About half for diameter step (3) axial distance being mutually linked is to about twice.
6. expansion bolt as described in claim 1, which is characterized in that the screw (9) has the thread depth of about 0.5mm.
7. expansion bolt as described in claim 1, which is characterized in that the foremost diameter in the hole (2) in expansion bolt (1)
Step (3) is approximately located i expansion bolt (1) mid-length.
8. expansion bolt as described in claim 1, which is characterized in that the expansion bolt (1) has in its non-vent portion
Outwardly projecting protrusion (8), they can be placed on its circumference.
9. expansion bolt as claimed in claim 8, which is characterized in that the protrusion (8) is hollow.
10. expansion bolt as claimed in claim 8, which is characterized in that the protrusion (8) opens towards expansion bolt medial surface
It opens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711454965.8A CN108194472A (en) | 2018-02-24 | 2018-02-24 | A kind of expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711454965.8A CN108194472A (en) | 2018-02-24 | 2018-02-24 | A kind of expansion bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108194472A true CN108194472A (en) | 2018-06-22 |
Family
ID=62585282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711454965.8A Pending CN108194472A (en) | 2018-02-24 | 2018-02-24 | A kind of expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108194472A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258999A (en) * | 2019-06-08 | 2019-09-20 | 郭卫康 | A kind of aluminum bronze composite inner wall fireproof heat preservation decorative board material and construction method |
| CN111101674A (en) * | 2019-06-08 | 2020-05-05 | 郭卫康 | Aluminum-copper composite inner wall heat-insulating decorative plate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201513435U (en) * | 2009-09-24 | 2010-06-23 | 中兴通讯股份有限公司 | Expansion bolt shell and expansion bolt |
| CN102282378A (en) * | 2009-01-15 | 2011-12-14 | 费希尔厂有限责任两合公司 | Anchor |
| CN202579515U (en) * | 2011-12-12 | 2012-12-05 | 李丰 | Internally-expanded expansion bolt used for installation |
-
2018
- 2018-02-24 CN CN201711454965.8A patent/CN108194472A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102282378A (en) * | 2009-01-15 | 2011-12-14 | 费希尔厂有限责任两合公司 | Anchor |
| CN102282378B (en) * | 2009-01-15 | 2014-04-30 | 费希尔厂有限责任两合公司 | Expansion bolt |
| CN201513435U (en) * | 2009-09-24 | 2010-06-23 | 中兴通讯股份有限公司 | Expansion bolt shell and expansion bolt |
| CN202579515U (en) * | 2011-12-12 | 2012-12-05 | 李丰 | Internally-expanded expansion bolt used for installation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258999A (en) * | 2019-06-08 | 2019-09-20 | 郭卫康 | A kind of aluminum bronze composite inner wall fireproof heat preservation decorative board material and construction method |
| CN111101674A (en) * | 2019-06-08 | 2020-05-05 | 郭卫康 | Aluminum-copper composite inner wall heat-insulating decorative plate |
| CN110258999B (en) * | 2019-06-08 | 2021-06-29 | 郭卫康 | Installation and construction method of aluminum-copper composite inner wall fireproof heat-preservation decorative plate |
| CN111101674B (en) * | 2019-06-08 | 2021-06-29 | 郭卫康 | Aluminum-copper composite inner wall heat-insulating decorative plate |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180622 |
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| RJ01 | Rejection of invention patent application after publication |