CN102878175B - Self-tapping and self-locking timber bolt pike - Google Patents
Self-tapping and self-locking timber bolt pike Download PDFInfo
- Publication number
- CN102878175B CN102878175B CN201210410604.4A CN201210410604A CN102878175B CN 102878175 B CN102878175 B CN 102878175B CN 201210410604 A CN201210410604 A CN 201210410604A CN 102878175 B CN102878175 B CN 102878175B
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- self
- bolt
- tapping
- side wall
- bone drill
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Abstract
The invention discloses a self-tapping and self-locking timber bolt pike which comprises a self-tapping drill, a bolt column and a bolt cap which are integrally connected with each other from bottom to top; the self-tapping drill comprises a conical core head and a plurality of arc cutting blades which are distributed on the outer side wall of the conical core head along the peripheral direction, and the cutting edge parts of the arc cutting blades are all arranged in the mode of facing the outside; the bolt column is a cylindrical rod, the middle lower part of the bolt column is a thread section, threads are formed on the outer side wall of the thread section and are spirally distributed on the outer side wall of the thread section, and the outer side wall of the upper part of the bolt column is a smooth side wall; the bottom of the thread section is connected with the top of the self-tapping drill, and the threads form a chip discharge passage which automatically discharges chips produced by the cutting of the self-tapping drill from bottom to top; and a chip guide groove is formed on the connection part of the bottom of the thread section and the top of the self-tapping drill. The timber bolt pike is simple in structure, convenient to process and manufacture and simple to use and operate, has the advantages of good use effect, convenience in construction, long bolt body, high connection strength and the like, and can realize functions of self-tapping, self-locking and automatic chip discharging.
Description
Technical field
The present invention relates to a kind of blunt bolt nail, especially relate to a kind of self-tapping self-locking blunt bolt nail.
Background technique
The bridge of wood structure, house are because of the aesthetic of its uniqueness and build process, and its demand is increasing.In the linkage structure of wood structure, bolt, screw etc. are connected elements the most common and important, but existing bolt, screw etc. are because its size, the factors such as less in diameter, length is shorter, the demand that large scale structural element connects can not be met.And in the actual using processs such as existing bolt, screw, need pre-drilled, and need carry out measurement and positioning calculating early stage, and very high to the required precision of drilling construction; In addition, because bolt, screw etc. can only carry out anchoring at wood structure surface, thus easily corrosion or have influence on the size of component, have impact on the Application in Building of wood structure to a certain extent.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of self-tapping self-locking blunt bolt nail is provided, its structure is simple, processing and fabricating convenient and it is easy and simple to handle to use, using effect good, there is easy construction, bolt height, join strength advantages of higher, and self tapping, self-locking and from chip removal function can be realized.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of self-tapping self-locking blunt bolt nail, it is characterized in that: comprise the bone drill, hitching post and the bolt cap that connect as one from the bottom to top, and described bone drill, hitching post and bolt cap form a bolt nail; Described bone drill comprise diameter from top to bottom diminishing conical core print and from the bottom to top spiral cloth be located at the circular arc cutting blade on conical core print outer side wall, the knife edge part of described circular arc cutting blade is laid all outwardly; Described hitching post is cylindrical bar, and the middle and lower part of described hitching post is threaded section outer side wall being provided with thread, and described thread from the bottom to top spiral cloth is located on the outer side wall of described threaded section, and the outer side wall on described hitching post top is smooth side wall; The bottom of described threaded section connects with the top of bone drill, and described thread forms the channel of chip removal that wood chip bone drill being cut generation carries out automatically discharging from bottom to top; The joint at the bottom of described threaded section and the top of bone drill, be provided with and bone drill is cut the dregs guiding groove that the wood chip produced guides to described channel of chip removal, described dregs guiding groove communicates with described chip flute and described channel of chip removal respectively.
Above-mentioned a kind of self-tapping self-locking blunt bolt nail, is characterized in that: the angle between the central axis of described circular arc cutting blade and described conical core print is 45 ° ~ 60 °.
Above-mentioned a kind of self-tapping self-locking blunt bolt nail, is characterized in that: described bone drill, hitching post and bolt cap are laid in coaxial.
Above-mentioned a kind of self-tapping self-locking blunt bolt nail, is characterized in that: the diameter on described hitching post top is less than the diameter of described threaded section.
Above-mentioned a kind of self-tapping self-locking blunt bolt nail, it is characterized in that: described chip flute is circular groove, described dregs guiding groove is be positioned at the helical groove communicated above described circular groove and with described circular groove inside, and described channel of chip removal is be positioned at the helical duct communicated above described helical groove and with described helical groove inside.
Above-mentioned a kind of self-tapping self-locking blunt bolt nail, is characterized in that: the shape of described bolt cap is regular hexagon.
Above-mentioned a kind of self-tapping self-locking blunt bolt nail, is characterized in that: the upper center of described bolt cap is provided with groove.
Above-mentioned a kind of self-tapping self-locking blunt bolt nail, is characterized in that: the shape of described groove is cross, in-line or interior hexagon.
Above-mentioned a kind of self-tapping self-locking blunt bolt nail, is characterized in that: described bone drill, hitching post and bolt cap processing and fabricating are integrated.
The present invention compared with prior art has the following advantages:
1, bolt nail diameter and length dimension all can make large-size, thus effectively can meet the requirement of large-scale timber buildings union piece.
2, processing and fabricating is easy, when size of the present invention is less, adopts traditional screw processing technology, by extruding, obtains drill bit, thread, hitching post and bolt cap etc., then carries out secondary operations to groove; When size of the present invention is larger, then adopt the mode of substep processing, first processing contains the component of bolt cap and hitching post, then utilizes machining tool to obtain drill bit, thread and groove.
3, can greatly improve the working efficiency be threaded, the present invention have from boring, from chip removal function, and pierce be deep into certain size after just can reach self-locking state.
4, bolt crown portion is provided with groove, and groove can be made into the shapes such as cross, in-line, interior hexagon according to the difference of size, and person's hand drill easy to use, electric drill etc. carry out different instrument and carry out construction operation, to carry out fastening to bolt nail.
5, bolt nail length adjustment is convenient, and hitching post top does not arrange thread, and it mainly plays a part to extend bolt nail length.
6, use easy and simple to handle and using effect good, when the precession of bolt nail, bone drill can cut timber, and institute cuts wood chip can along outside thread from bottom to top leadout hole, and thread can produce self-locking effect when extruding periphery wood structure.In actual using process, available screw-driver, screw socket, electric screw driver etc. perform fastening process: first, circular arc cutting blade set on bone drill carries out boring work to timber body, meanwhile, the wood chip that bone drill is discharged by dregs guiding groove imports in the fillet of screw (i.e. the odontogenetic channel of chip removal of spiral shell); When bone drill is deep into after in timber, thread starts to squeeze the timber cutting periphery, and the wood chip that cutter head is discharged is guided and extruded, when the wood compression in thread to a certain extent after, frictional force between this three of thread, timber and wood chip starts generation effect, along with bolt clenches the increasing of the solid degree of depth, thus reach self-locking state.
In sum, structure of the present invention is simple, processing and fabricating convenient and it is easy and simple to handle to use, using effect good, actual can handwork when carrying out fastening construction, also can do mechanization operation, and multiple types of tools can be adopted to carry out fastening construction, there is easy construction, bolt height, join strength advantages of higher, and can realize self tapping, self-locking, from functions such as chip removals, thus be applicable to the connection fastener cycle of large-scale timber buildings, achieve effective connection of large-scale wood structures and apply widely.Meanwhile, solve the problem such as surface anchoring, complicated construction technique of the undersized and bolt shank existing for existing wood screw, increased substantially working efficiency.
Below by drawings and Examples, technological scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is perspective view of the present invention.
Fig. 3 is the plan view of Fig. 1.
Description of reference numerals:
1-bone drill; 1-1-conical core print; 1-2-circular arc cutting blade;
2-hitching post; 3-bolt cap; 4-groove;
5-thread; 6-dregs guiding groove.
Embodiment
As shown in Figure 1, Figure 2 and Figure 3, the present invention includes the bone drill 1, hitching post 2 and the bolt cap 3 that comprise and connecting as one from the bottom to top, and described bone drill 1, hitching post 2 and bolt cap 3 form a bolt nail.Described bone drill 1 comprises diameter diminishing conical core print 1-1 and multiple circular arc cutting blade 1-2 be along the circumferential direction laid on conical core print 1-1 outer side wall from top to bottom, and the knife edge part of multiple described circular arc cutting blade 1-2 is laid all outwardly.The bottom of multiple described circular arc cutting blade 1-2 connects as one, and formed between adjacent two described circular arc cutting blade 1-2 one for hold circular arc cutting blade 1-2 cut produce the chip flute of wood chip.Described hitching post 2 is cylindrical bar, and the middle and lower part of described hitching post 2 is threaded section outer side wall being provided with thread 5, and described thread 5 from the bottom to top spiral cloth is located on the outer side wall of described threaded section, and the outer side wall on described hitching post 2 top is smooth side wall.The bottom of described threaded section connects with the top of bone drill 1, and described thread 5 forms the channel of chip removal that wood chip bone drill 1 being cut generation carries out automatically discharging from bottom to top.The joint at the bottom of described threaded section and the top of bone drill 1, is provided with the wood chip that bone drill 1 cut generation and the wood chip being positioned at described chip flute guides to the dregs guiding groove 6 of described channel of chip removal.The top of multiple described circular arc cutting blade 1-2 all extends in described dregs guiding groove 6, and described dregs guiding groove 6 all communicates with described chip flute and described channel of chip removal respectively.
In the present embodiment, described chip flute is circular groove, described dregs guiding groove 6 is for being positioned at the helical groove communicated above described circular groove and with described circular groove inside, and described channel of chip removal is be positioned at the helical duct communicated above described helical groove and with described helical groove inside.Specifically, the space in multiple described thread 5 between neighbouring two threads 5 is in turn connected to form described helical duct.
Actually add man-hour, described circular groove is between adjacent two described circular arc cutting blade 1-2, and the upper end of described circular groove extends to described dregs guiding groove 6; The quantity of described circular groove is multiple, and its quantity is identical with the quantity of described circular arc cutting blade 1-2; Described dregs guiding groove 6 is for communicate with multiple described circular groove respectively, and the joint of its spiral surrounding bottom described threaded section and between bone drill 1 top; The top of described dregs guiding groove 6 extends to described helical duct.
In the present embodiment, multiple described circular arc cutting blade 1-2 is in evenly laying.
In the present embodiment, the angle between the central axis of described circular arc cutting blade 1-2 and described conical core print 1-1 is 45 ° ~ 60 °.
In the present embodiment, described bone drill 1, hitching post 2 and bolt cap 3 is laid in coaxial.
During actual processing and fabricating, the diameter on described hitching post 2 top is less than the diameter of described threaded section.In the present embodiment, because described thread 3 is ring, then the diameter on described hitching post 2 top is less than the external diameter of thread 3 and it is greater than the internal diameter of thread 3.
In the present embodiment, the shape of described bolt cap 3 is regular hexagon.And the upper center of described bolt cap 3 is provided with groove 4.
Actually add man-hour, the shape of described groove 4 is cross, in-line or interior hexagon.In the present embodiment, the shape of described groove 4 is cross.
In the present embodiment, described bone drill 1, hitching post 2 and bolt cap 3 processing and fabricating are integrated.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.
Claims (7)
1. a self-tapping self-locking blunt bolt nail, it is characterized in that: comprise the bone drill (1), hitching post (2) and the bolt cap (3) that connect as one from the bottom to top, and described bone drill (1), hitching post (2) and bolt cap (3) form a bolt nail; Described bone drill (1) comprises diameter diminishing conical core print (1-1) and multiple circular arc cutting blade (1-2) be along the circumferential direction laid on conical core print (1-1) outer side wall from top to bottom, and the knife edge part of multiple described circular arc cutting blade (1-2) is laid all outwardly; The bottom of multiple described circular arc cutting blade (1-2) connects as one, and formed between adjacent two described circular arc cutting blades (1-2) one for hold circular arc cutting blade (1-2) cut produce the chip flute of wood chip; Described hitching post (2) is cylindrical bar, the middle and lower part of described hitching post (2) is threaded section outer side wall being provided with thread (5), described thread (5) from the bottom to top spiral cloth is located on the outer side wall of described threaded section, and the outer side wall on described hitching post (2) top is smooth side wall; The bottom of described threaded section connects with the top of bone drill (1), and described thread (5) forms the channel of chip removal that wood chip bone drill (1) being cut generation carries out automatically discharging from bottom to top; The joint at the bottom of described threaded section and bone drill (1) top, is provided with the wood chip that to be cut by bone drill (1) and produce and the wood chip being positioned at described chip flute guides to the dregs guiding groove (6) of described channel of chip removal; The top of multiple described circular arc cutting blade (1-2) all extends in described dregs guiding groove (6), and described dregs guiding groove (6) communicates with described chip flute and described channel of chip removal respectively; Described chip flute is circular groove, described dregs guiding groove (6) is for being positioned at the helical groove communicated above described circular groove and with described circular groove inside, and described channel of chip removal is be positioned at the helical duct communicated above described helical groove and with described helical groove inside; Angle between described circular arc cutting blade (1-2) and the central axis of described conical core print (1-1) is 45 ° ~ 60 °.
2. according to a kind of self-tapping self-locking blunt bolt nail according to claim 1, it is characterized in that: described bone drill (1), hitching post (2) and bolt cap (3) are laid in coaxial.
3. according to a kind of self-tapping self-locking blunt bolt nail described in claim 1 or 2, it is characterized in that: the diameter on described hitching post (2) top is less than the diameter of described threaded section.
4. according to a kind of self-tapping self-locking blunt bolt nail described in claim 1 or 2, it is characterized in that: the shape of described bolt cap (3) is regular hexagon.
5. according to a kind of self-tapping self-locking blunt bolt nail described in claim 1 or 2, it is characterized in that: the upper center of described bolt cap (3) is provided with groove (4).
6. according to a kind of self-tapping self-locking blunt bolt nail according to claim 5, it is characterized in that: the shape of described groove (4) is cross, in-line or interior hexagon.
7. according to a kind of self-tapping self-locking blunt bolt nail described in claim 1 or 2, it is characterized in that: described bone drill (1), hitching post (2) and bolt cap (3) processing and fabricating are integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210410604.4A CN102878175B (en) | 2012-10-24 | 2012-10-24 | Self-tapping and self-locking timber bolt pike |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210410604.4A CN102878175B (en) | 2012-10-24 | 2012-10-24 | Self-tapping and self-locking timber bolt pike |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102878175A CN102878175A (en) | 2013-01-16 |
| CN102878175B true CN102878175B (en) | 2015-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210410604.4A Expired - Fee Related CN102878175B (en) | 2012-10-24 | 2012-10-24 | Self-tapping and self-locking timber bolt pike |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102878175B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081060A (en) * | 2019-05-30 | 2019-08-02 | 浙江洪扬汽车零部件有限公司 | A kind of novel dust lead type drilling screw rod |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0824198A1 (en) * | 1996-08-15 | 1998-02-18 | Adolf Würth GmbH & Co. KG | Screw having a self drilling point |
| CN201771916U (en) * | 2010-07-08 | 2011-03-23 | 精法精密工业股份有限公司 | Drilling and tapping fastener |
| CN102042290A (en) * | 2010-12-30 | 2011-05-04 | 长安大学 | Automatic chip removal drilling wood screw |
| CN202108837U (en) * | 2011-02-12 | 2012-01-11 | 宽仕工业股份有限公司 | Wood screw |
| CN202867481U (en) * | 2012-10-24 | 2013-04-10 | 长安大学 | Self-tapping self-locking wood screw spike |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010028824A1 (en) * | 2010-05-10 | 2011-11-10 | Hilti Aktiengesellschaft | Thread cutting concrete screw |
-
2012
- 2012-10-24 CN CN201210410604.4A patent/CN102878175B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0824198A1 (en) * | 1996-08-15 | 1998-02-18 | Adolf Würth GmbH & Co. KG | Screw having a self drilling point |
| CN201771916U (en) * | 2010-07-08 | 2011-03-23 | 精法精密工业股份有限公司 | Drilling and tapping fastener |
| CN102042290A (en) * | 2010-12-30 | 2011-05-04 | 长安大学 | Automatic chip removal drilling wood screw |
| CN202108837U (en) * | 2011-02-12 | 2012-01-11 | 宽仕工业股份有限公司 | Wood screw |
| CN202867481U (en) * | 2012-10-24 | 2013-04-10 | 长安大学 | Self-tapping self-locking wood screw spike |
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| Publication number | Publication date |
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| CN102878175A (en) | 2013-01-16 |
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Granted publication date: 20150527 Termination date: 20161024 |
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| CF01 | Termination of patent right due to non-payment of annual fee |