CN86208237U - Labour-saving wood screw - Google Patents
Labour-saving wood screw Download PDFInfo
- Publication number
- CN86208237U CN86208237U CN 86208237 CN86208237U CN86208237U CN 86208237 U CN86208237 U CN 86208237U CN 86208237 CN86208237 CN 86208237 CN 86208237 U CN86208237 U CN 86208237U CN 86208237 U CN86208237 U CN 86208237U
- Authority
- CN
- China
- Prior art keywords
- screw
- wood screw
- wood
- laborsaving
- thread
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 239000002023 wood Substances 0.000 title claims abstract description 49
- 238000005520 cutting process Methods 0.000 claims abstract description 12
- 230000009471 action Effects 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 3
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 10
- 238000001125 extrusion Methods 0.000 abstract description 9
- 238000005336 cracking Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
Images
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
- F16B25/0015—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 soft organic material, e.g. wood or plastic
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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
- F16B25/0036—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
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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
- F16B25/0036—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
Abstract
The utility model relates to a labour-saving wood screw for household and production. A present wood screw is hard to screw in, and the present wood screw even can not be screwed in; the straight slot of the screw tail section and the whole screw are easy to be damaged; wood is easy to crack. The present wood screw can not meet actual requirement. The labour-saving wood screw of the utility model is provided with a section for cutting action, which enables the process of the wood screw to screw in improved from extrusion forming to cutting forming. The wood screw can be provided with one or more sections for cutting action to meet the requirement of the screwing in process.
Description
The present invention is a kind of novel wood screw, belongs to mechanical engineering F16B class, can improve present wood screw usability.
The wood screw of being supplied has following shortcoming basically as Fig. 1 shape in actual the use in the market:
1. wood screw is not easy to knock in wood when beginning, and the position changes easily, is difficult for the location.2. extremely require great effort when being screwed into,, firmly can be doubled and redoubled, even reach the degree that to clamp-on again along with going deep into of screw.3. owing to firmly increase, often cause the fracture of screw, this not only can not reach original purpose, and the part that remains in the wood causes new trouble.4. owing to the increase of exerting oneself, destroy the straight trough of afterbody, caused the situation that can't be screwed into again and can't back-out.5. clamp-on the extruding force that produces in the process and cause wooden cracking.
The objective of the invention is to overcome above shortcoming, for people provide a kind of laborsaving and practical novel wood screw.
Find out that by Fig. 1 the structure of wood screw has the afterbody of band straight trough; Column part and helical thread portion.Helical thread portion can be divided into awl stamen part and male thread portion again.It is nearly 60 degree tapers that the awl stamen partly begins, and is that 3 degree left and right sides tapers are up to column part afterwards.Male thread portion pitch is equal substantially, but diameter changes to some extent.
Not having pre-hole owing to wooden before wood screw is screwed into, so can occupy a tiny space in wood after wood screw is screwed into, is the strength of leaning on the human top fully and twisting, and by means of the screw thread on the screw, continuous sinciput and continuous rotation extruding reach in wood.This process also can be divided into the extrusion modling in awl stamen space and the extrusion modling in screw thread space and cylindrical hole space.People will provide the energy of extrusion modling and overcome surface friction drag and rotate advancing energy in being screwed into.Can draw anatomizing of this three parts forming process: the amount of space of being extruded when screw whenever is screwed into a same depth strengthens gradually, and with the increase of the degree of depth not only extrusion capacity significantly increase, wooden also more solid, extrusion condition is also more difficult thereupon, and this is the main cause that firmly increases.When column part enters, reach the extruding of three parts and carry out simultaneously, every part extrusion capacity is in maximum value again, makes firmly to reach the peak.
Awl stamen structure has produced very big extruding force, has reached the purpose in extruding space, but has caused the increase greatly of wooden cracking and friction torque simultaneously.
At above-mentioned shortcoming be screwed into the analysis of process, notice that simultaneously this process is the objective condition of iron to wood, it is considered herein that under the preceding topic of fastening purpose above-mentioned extrusion process to be changed into working angles as far as possible be the aim that novel wood screw designs obtaining.
The present invention becomes to have the head of shear action with the head design of wood screw for this reason, make it when wood screw is screwed into, just can and advances and constantly in wood, open up pre-hole with the rotation of screw, even screwed pre-hole, for providing the condition that well is screwed into immediately following the part of coming.Certainly wooden for damaged screw part not, the head dimensions of cutting pre-hole must be complementary with thread size, makes pre-hole size equal or be slightly larger than the inner diameter d of the last several buckles of helical thread portion, but must be column part diameter D less than major diameter of thread.
The head of tool shear action such as design have the part of screw cutting, and its size also needs and back screw thread coupling.
And then also be designed to the structure of tool shear action on the segment length that begins as column part, be screwed into and equally constantly open up the required pre-hole of column part in the process.
Change by in these designs the invention has the advantages that: 1. the purpose of changing into cutting forming from extrusion modling that is screwed into that makes wood screw.2. reduce labor intensity the effect of reach laborsaving, economizing merit.3. making some twist the wood screw not advance and to twist not on earth can be screwed into smoothly.4. the destruction of wood screw afterbody straight trough and the phenomenon of rupture of whole wood screw have been reduced.5. overcome wooden cracking phenomena basically.6. improved the accurate positioning when beginning to be screwed into.7. together synthetic with twisting wood screw two procedures behind the pre-hole of preemption at ordinary times.
Embodiment sees accompanying drawing 2, and this embodiment increases by one cold working operation after existing wood screw production technology.Thereby the first, not only form the cutting part of a flat taper at head, see Fig. 2 and Fig. 3, and because itself existing screw thread before the cold pressing process, so still remain with helical thread portion outside flat awl, pitch is mated substantially, forms the thread cutting part.Cold presswork has increased the hardness and the fibrous of material, has improved the cutting ability to wood.
The width B of flat wimble fraction should be controlled at greater than d less than D, to reach aforementioned effect among Fig. 2.Thickness b helps head intensity satisfying increasing as far as possible under the condition of B among Fig. 3.
The second, begin to locate to form the structure of tool symmetry projection of the A-A section of Fig. 4 at column part through cold presswork, its width H greater than D length C greater than pitch.Thereby when column part is screwed into, on the tapped hole basis, open up pre-hole greater than D, do not contact substantially when the back column part enters wooden, overcome this part extruding and the friction unfavorable factor.
Whole wood screw becomes the integral body that distinctive screw thread combines with step drill, and how dark need many dark pre-holes to bore in the use, and what partly is screwed into the pre-hole that will bore what part.
Though as if flat wimble fraction split off easily, as long as vertical wood grain is knocked in wood, knock in the degree of depth and reach a part of screw thread and enter wood in using, just can attain the results expected.Even disconnected also is that head will not reach and can't take out stage, do not decrease being screwed into of new wood screw after the taking-up yet.
Description of drawings: Fig. 1 is present existing wood screw; Fig. 2 is laborsaving wood screw figure; Fig. 3 is the profile of laborsaving wood screw; Fig. 4 is the A-A sectional drawing of laborsaving wood screw.
Claims (6)
1, a kind ofly it is characterized in that for the life and the laborsaving wood screw of production usefulness screw has had the part of shear action, the part of a shear action is at head, and the pre-hole of formation is greater than the internal diameter of the last several buckles of helical thread portion, and less than major diameter of thread.
2, laborsaving wood screw according to claim 1 is characterized in that the head of shear action can have the thread cutting part simultaneously, the screw thread space of formation and back screw thread coupling.
3, laborsaving wood screw according to claim 1 is characterized in that the part of shear action also can begin the place at column part, and the pre-hole of formation should be slightly larger than the column part diameter.
4, according to claim 1,2,3 described laborsaving wood screws, it is characterized in that the each several part of shear action can have simultaneously, formed the integral body that distinctive screw thread combines with step drill, also can partly have.
5, laborsaving wood screw according to claim 1 is characterized in that the head of shear action becomes flat taper, and flat awl has the thread cutting part outward.
6, laborsaving wood screw according to claim 3 is characterized in that the cutting part that above-mentioned cylinder begins to locate is the structure shape that becomes the symmetry projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86208237 CN86208237U (en) | 1986-10-25 | 1986-10-25 | Labour-saving wood screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86208237 CN86208237U (en) | 1986-10-25 | 1986-10-25 | Labour-saving wood screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86208237U true CN86208237U (en) | 1987-09-09 |
Family
ID=4810497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86208237 Ceased CN86208237U (en) | 1986-10-25 | 1986-10-25 | Labour-saving wood screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86208237U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102439323A (en) * | 2009-05-22 | 2012-05-02 | 菲利普螺丝公司 | Low energy screws for wood and similar materials |
| CN105987058A (en) * | 2015-02-13 | 2016-10-05 | 美联钢结构建筑系统(上海)股份有限公司 | Limiting fastening screw used for steel structure enclosure system |
-
1986
- 1986-10-25 CN CN 86208237 patent/CN86208237U/en not_active Ceased
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102439323A (en) * | 2009-05-22 | 2012-05-02 | 菲利普螺丝公司 | Low energy screws for wood and similar materials |
| CN102439323B (en) * | 2009-05-22 | 2013-11-20 | 菲利普螺丝公司 | Low energy screws for wood and similar materials |
| US9297402B2 (en) | 2009-05-22 | 2016-03-29 | Phillips Screw Company | Low energy screws for wood and similar materials |
| US9903406B2 (en) | 2009-05-22 | 2018-02-27 | Phillips Screw Company | Low energy screws for wood and similar materials |
| US10371193B2 (en) | 2009-05-22 | 2019-08-06 | Phillips Screw Company | Low energy screws for wood and similar materials |
| US10954990B2 (en) | 2009-05-22 | 2021-03-23 | Phillips Screw Company | Low energy screws for wood and similar materials |
| CN105987058A (en) * | 2015-02-13 | 2016-10-05 | 美联钢结构建筑系统(上海)股份有限公司 | Limiting fastening screw used for steel structure enclosure system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right |
Termination date: 19880323 |
|
| CE01 | Termination of patent right |