CN202182094U - Novel wood screw - Google Patents
Novel wood screw Download PDFInfo
- Publication number
- CN202182094U CN202182094U CN 201120289572 CN201120289572U CN202182094U CN 202182094 U CN202182094 U CN 202182094U CN 201120289572 CN201120289572 CN 201120289572 CN 201120289572 U CN201120289572 U CN 201120289572U CN 202182094 U CN202182094 U CN 202182094U
- Authority
- CN
- China
- Prior art keywords
- screw
- section
- thread
- protruding rib
- supporting surface
- 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.)
- Expired - Lifetime
Links
- 239000002023 wood Substances 0.000 title claims abstract description 41
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 10
- 238000007373 indentation Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000010079 rubber tapping Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 229920002522 Wood fibre Polymers 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002025 wood fiber Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 208000017667 Chronic Disease Diseases 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
- F16B25/106—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a self-piercing screw-point, i.e. without removing material
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Wood Science & Technology (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The utility model discloses a novel wood screw which comprises a screw head with a screw wrenching tool meshing slot and a screw rod with at least partial thread with certain length, the screw head is provided with a tapered bearing surface contracting towards the screw rod, the bearing surface is provided with a plurality of protruding edges along the direction of the screw rod, the tail end of the bearing surface of the screw head is provided with a smooth rod section of the screw rod, the tail end of the smooth rod section is provided with a twilling knurling section with oblique protruding edges, the tail end of the twilling knurling section is provided with a middle thread section with thread, the tail end of the middle thread section is provided with a dense secant line type thread section with serrated thread section, and the tail end of the dense secant line type thread section is provided with an antiquing tail drilling tip with thread. The combined thread provided by the utility model can have higher screwing-in speed with only smaller screwing-in torque when being screwed into a wood foundation, and can cut off dense wood fiver during installation, thus preventing fracture of wood. Simultaneously, the protruding edges of the knurling section, matched with the screw head, can ensure that the screw head is better embedded into the surface of the wood foundation partially.
Description
Technical field
The utility model relates to a kind of fastening piece, relates in particular to a kind of novel wood screw that is used for various wooden installations connections or fastening usefulness.
Background technique
At present, in occasions such as building framework, interior decoration, woodenware production and woodwork installations, the common fastening products such as tapping screw, the dried wall screw of closely-pitched, traditional wood screw and wad screw that have with screw.
Wherein, the correct applicable situation of tapping screw should be used to have pre-drilled metallic material fastening be connected.It has the function of automatic tapping internal thread on metal body, and can accomplish thread engagement with it and play fastening effect.But because its core diameter of thread is higher, when being used for woodwork, incision timber can be superficial; And because the worm tooth distance is less, the wood structure between per two pitch threads is also less.Therefore, tapping screw being used for wooden assembling set, during especially comparatively loose timber, is unreliable and unsafe.
Similarly, the correct purposes of the dried wall screw of closely-pitched be used between metal keel and the gypsum board fastening be connected.When being used in wooden assembling set, it has the defective similar with tapping screw.And, also cause screw head and assembling set air spots after the installation easily because the head diameter of dried wall screw is bigger, and the head imbedibility is relatively poor.
The epimere of tradition wood screw is to account for length overall 1/3 greatly, with the isometrical level and smooth bar section branch of screw thread.Before the use, need on wooden assembling set, carry out pre-drilled, otherwise be easy to cause timber crack.In addition, cause grooved to be destroyed easily because traditional wood screw without heat treatment, uses electric tool to screw, and install very hard with manpower.
The wad screw belongs to the novel wood screw kind of comparison, is fit to electric tool and installs.But, still can not effectively solve and on hardwood, use the chronic disease that causes cracking easily, and also not have any advantage on the moment of torsion with screwing in screw-in speed because its screw thread design is more single.
Publication number is that the utility model patent of CN1264795A provides a kind of sunk screw; This sunk screw does not produce the damaged requirement of material after rib satisfies screw and is screwed into especially from the teeth outwards in the lower area of the supporting surface of screw rod, being provided with to mill; Screw head ability and wood surface flush simultaneously; Can solve screw and be screwed into fully that the surface produces the damaged problem of material behind the material though mill rib through setting, it is undesirable that screw head is imbedded effect, and the speed that screw is shot is undesirable.
Publication number is that the utility model patent of CN2474781Y provides a kind of wood screw; The screw rod of its wood screw and the screw thread on the tail cone are set to zigzag fashion, make working angles more laborsaving through rule or irregular sawtooth breach on the screw rod, are screwed into more brisk; But also be applicable to electric tool; But the enlarging sword is arranged at screw near free end, just reduces in the operating process damage to wooden product, reaming by force when being screwed into; Still there is the possibility of destroying wooden product, and imbeds problem for screw head and can not be solved preferably.
The model utility content
The purpose of the utility model is exactly in order to address the above problem, and a kind of design that combines multiple special thread is provided, and it is fast to have the speed of shooting, and the screw-in moment of torsion is little, be difficult for causing timber crack, and head is imbedded the good novel wood screw of performance.
To achieve these goals, the utility model adopts following technological scheme:
A kind of novel wood screw; Comprise that having screw turns the screw head of tool engagement groove and have the screw rod of partial-length screw thread at least; This engaging groove can be the groove of a common word longitudinal joint, cross recess, interior hex shaped groove or other type; It is an overall structure that said screw head is connected with screw rod, and said screw head is provided with the supporting surface that taper is shunk towards the screw rod direction, and it is characterized in that: said supporting surface is provided with many protruding ribs along the screw rod direction; Said screw head supporting surface end is provided with the level and smooth bar section of screw rod; Said level and smooth bar section end is provided with the twill knurled segment with oblique protruding rib, and said twill knurled segment end is provided with threaded stage casing thread section, and the threaded body of this stage casing thread section adopts screw thread commonly used; Said stage casing thread section end is provided with the intensive secant formula thread section of thread segment indentation, and said intensive secant formula thread section end is provided with threaded brill tail point modelled after an antique.
Said protruding rib cross section is triangular in shape, and said protruding rib circular array is arranged in the supporting surface surface, and the quantity of its setting is four, supporting surface everywhere on the cross section each protruding rib deviate from the supporting surface distal-most end and be in from the concentric circle in this center of circle, cross section.
The cross section of the oblique protruding rib of said twill knurled segment is triangular in shape; Said oblique protruding rib circular array is arranged in twill knurled segment surface; The quantity of its setting is six, and each oblique protruding rib deviates from twill knurled segment surface distal-most end and is in from the concentric circle in this center of circle, cross section on the cross section, same twill knurled segment place.
The worm tooth of said stage casing thread section is wide by 30%～50% apart from the tooth distance than model wood screw of the same race.
The thread segment of said brill tail point modelled after an antique is non-isosceles triangle.
Said protruding rib true dip direction is to tilt counterclockwise or clockwise along the supporting surface circumferencial direction, promptly along brill tail point modelled after an antique along screw head direction view for being tilted to the left or being tilted to the right.
Said oblique protruding rib true dip direction is to tilt counterclockwise or clockwise along twill knurled segment circumferencial direction; Promptly along brill tail point modelled after an antique along screw head direction view for being tilted to the left or being tilted to the right; And the protruding rib true dip direction of said oblique protruding rib true dip direction and supporting surface in the same way, promptly is tilted to the left simultaneously or is tilted to the right simultaneously.
Said protruding rib and oblique protruding rib are equipped with blade.
The beneficial effect of the utility model is: the combination screw thread that the utility model provides; Can when being screwed into wooden basis,, only need less screw-in moment of torsion through thread section is provided with the threaded body than common tooth distance big 30%～50% in the stage casing; Just can obtain the speed that screws in faster; And can in installation process, cut off intensive wood fiber through the screw thread that the thread segment indentation is set at intensive secant formula thread section, prevent timber crack.The protruding rib of engagement head can guarantee that the countersunk head part can imbed the surface on wooden basis better after the knurled segment reaming simultaneously.
Description of drawings
Fig. 1 is the novel wood screw structural representation of the utility model.
Fig. 2 is an A-A sectional drawing among Fig. 1.
Fig. 3 is the local structure for amplifying schematic representation of Fig. 2 convexity barring.
Fig. 4 is a B-B sectional drawing among Fig. 1.
Fig. 5 is a C-C sectional drawing among Fig. 1.
Fig. 6 is the screw thread structure for amplifying schematic representation of imitative wood drill tail point.
Among the figure: A-screw head B-screw rod A
0-supporting surface B
0The protruding rib B of-level and smooth bar section 1-
0-level and smooth bar section
The intensive secant formula of 2-twill knurled segment 3-stage casing thread section 4-thread section 5-brill tail point modelled after an antique
The oblique protruding rib E-blade of 21-
Embodiment
Below in conjunction with accompanying drawing the utility model is done further description.
Consult shown in Figure 1; A kind of novel wood screw; Comprise that having screw turns the screw head A of tool engagement groove and have the screw rod B of partial-length screw thread at least; This engaging groove can be the groove of a common word longitudinal joint, cross recess, interior hex shaped groove or other type, and it is an overall structure that said screw head A is connected with screw rod B, and said screw head A is provided with the supporting surface A that taper is shunk towards the screw rod direction
0This taper supporting surface and wood screw afterbody can be directly with the taper supporting surface as afterbody; At this afterbody screw is set and turns the tool engagement groove; Taper supporting surface afterbody also is provided with a cylindrical shape afterbody in the present embodiment, and this cylindrical shape afterbody is located at taper supporting surface diameter of section biggest place, said supporting surface A
0Be provided with many protruding ribs 1 along the screw rod direction; This convexity rib 1 radially direct is on supporting surface, and its top arises from cylindrical shape afterbody restrain end, terminates in the minimum place of taper supporting surface diameter of section; Effect is the usefulness of milling timber; Said screw head A supporting surface terminal (this specification if no special instructions, all with structural sections separately near wood screw afterbody one end as top, near wood screw point one end as end) be provided with the level and smooth bar section B of screw rod
0, this structural sections smooth surface, the cross-sectional diameter of this section is consistent with the minimum place of supporting surface diameter of section, said level and smooth bar section B
0End is provided with the twill knurled segment 2 with oblique protruding rib, and this oblique protruding rib is arranged in twill knurled segment 2 surfaces, has cutting edge; Its role is to the usefulness of reaming; This oblique protruding rib has the advantages that to connect the twill knurled segment, but not conventional threads is provided with around one week of screw rod, and said twill knurled segment end is provided with threaded stage casing thread section 3; The threaded body of this stage casing thread section adopts regular screw threads; Said stage casing thread section end is provided with the intensive secant formula thread section 4 of thread segment indentation, and the flexuose screw thread makes screw in the initial period that screws in timber, just can effectively cut off thick and close wood fiber; Make timber in the process that screw screws in subsequently, to cause cracking, said intensive secant formula thread section end is provided with threaded brill tail point 5 modelled after an antique.
Cooperate Fig. 2, shown in Figure 3, said protruding rib 1 cross section is triangular in shape, and said protruding rib 1 circular array is arranged in supporting surface A
0The surface; The quantity of its setting is four, and angle is 90 degree between two protruding ribs, supporting surface everywhere on the cross section each protruding rib deviate from the supporting surface distal-most end and be on the concentric circle that sets out in this center of circle, cross section; Guarantee that every protruding rib leaves the supporting surface distal-most end from the supporting surface surface to protruding rib and is on the same circle; Help guaranteeing that the aperture of being cut is consistent, protruding rib extends to the supporting surface end from screw head A supporting surface top, so is provided with to be beneficial to scrape away screw head supporting surface timber all around; After guaranteeing that product is installed, screw head ability and wood surface flush.
Cooperate shown in Figure 4; The cross section of the oblique protruding rib 21 of said twill knurled segment 2 is triangular in shape; Said oblique protruding rib circular array is arranged in twill knurled segment surface; The quantity of its setting is six, and each oblique protruding rib deviates from twill knurled segment surface distal-most end and is in from this center of circle, cross section 0 on the same twill knurled segment place cross section
1The concentric circle R that sets out
1On, owing to one section twill knurled segment is set, when can play the reaming effect, is convenient to screw head and imbeds timber and avoid timber crack at level and smooth bar section end.
The worm tooth of said stage casing thread section 3 is wide by 30%～50% apart from the tooth distance than model wood screw of the same race., with reference to the wood screw technical specifications of stipulating among the GB-922-86, for example wood screw d is that the tooth of 1.6mm is 0.8mm apart from P, then tooth is strengthened 30%～50% design apart from P in the utility model, promptly P is an any number between 1.04mm～1.2mm; When d=20mm, traditional tooth is 6mm apart from P, and it is any number in 7.8～9mm scope that the utility model is then got P; So design is than the big 30%-50% of wooden worm tooth distance of specification of the same race; Both increase lead of screw thread (whenever screwing 360 degree, the distance that screw advances), also increased screw-in speed; Shorten installation process, and in comparatively loose artificial board of density or cork, better nail-holding ability is provided.
Cooperate shown in Figure 5; Said stage casing thread section end is provided with the intensive secant formula thread section 4 of thread segment indentation; Adopt intensive secant at screw tip, make this section thread segment indentation, make screw in the initial period that screws in timber; Just can effectively cut off thick and close wood fiber, make timber in the process that screw screws in subsequently, to cause cracking.
Cooperate shown in Figure 6; The thread segment of said brill tail point 5 modelled after an antique is non-isosceles triangle; And screw thread is extended to point place of afterbody, imitation wood drill profile and effect, and asymmetric screw thread tooth can reduce the resistance that screws in and the possibility of minimizing timber crack; When make installing, screw touches the moment of wood surface and just can shoot fast.
Said protruding rib 1 true dip direction is to tilt counterclockwise or clockwise along the supporting surface circumferencial direction; Present embodiment is set to be viewed as to the screw head direction along brill tail point modelled after an antique and is tilted to the left; Promptly counterclockwise tilt, guarantee the function of protruding rib cutting edge cutting like this.
Said oblique protruding rib 21 true dip directions are to tilt counterclockwise or clockwise along twill knurled segment circumferencial direction; And the protruding rib true dip direction of said oblique protruding rib true dip direction and supporting surface in the same way; Present embodiment is that brill tail point modelled after an antique is viewed as to the screw head direction and is tilted to the left; Promptly counterclockwise tilt, guarantee that the sense of rotation and hand of spiral, the instrument torsional direction that are screwed into screw are consistent.
Said protruding rib and oblique protruding rib are equipped with blade E, and in each figure of accompanying drawing, same parts is furnished with same numeral, thereby generally they is also only described once respectively.
The utility model is the design that has combined multiple special thread, and it is fast to have the speed of shooting, and the screw-in moment of torsion is little, and the novel wood screw that integrates the design of four macrostructures is difficult for causing timber crack, and screw head is imbedded multinomial advantages such as performance is good.
The above is merely the preferred implementation of the utility model, and the protection domain of the utility model is not limited in above-mentioned mode of execution, and every technological scheme that belongs to the utility model principle all belongs to the protection domain of the utility model.For a person skilled in the art, some improvement of under the prerequisite of the principle that does not break away from the utility model, carrying out, these improve the protection domain that also should be regarded as the utility model.
Claims (8)
1. novel wood screw; Comprise that having screw turns the screw head of tool engagement groove and have the screw rod of partial-length screw thread at least; It is an overall structure that said screw head is connected with screw rod; Said screw head is provided with the supporting surface that taper is shunk towards the screw rod direction, and it is characterized in that: said supporting surface is provided with many protruding ribs along the screw rod direction, and said screw head supporting surface end is provided with the level and smooth bar section of screw rod; Said level and smooth bar section end is provided with the twill knurled segment with oblique protruding rib; Said twill knurled segment end is provided with threaded stage casing thread section, and said stage casing thread section end is provided with the intensive secant formula thread section of thread segment indentation, and said intensive secant formula thread section end is provided with threaded brill tail point modelled after an antique.
2. a kind of novel wood screw as claimed in claim 1; It is characterized in that: said protruding rib cross section is triangular in shape; Said protruding rib circular array is arranged in the supporting surface surface; The quantity of its setting is four, supporting surface everywhere on the cross section each protruding rib deviate from the supporting surface distal-most end and be in from the concentric circle in this center of circle, cross section.
3. a kind of novel wood screw as claimed in claim 1; It is characterized in that: the cross section of the oblique protruding rib of said twill knurled segment is triangular in shape; Said oblique protruding rib circular array is arranged in twill knurled segment surface; The quantity of its setting is six, and each oblique protruding rib deviates from twill knurled segment surface distal-most end and is in from the concentric circle in this center of circle, cross section on the cross section, same twill knurled segment place.
4. a kind of novel wood screw as claimed in claim 1 is characterized in that: the worm tooth of said stage casing thread section is apart from wideer by 30%～50% than model wood screw tooth distance of the same race.
5. a kind of novel wood screw as claimed in claim 1 is characterized in that: the thread segment of said brill tail point modelled after an antique is non-isosceles triangle.
6. like claim 1 or the described a kind of novel wood screw of claim 2, it is characterized in that: said protruding rib true dip direction is for tilt along the supporting surface circumferencial direction counterclockwise or clockwise.
7. a kind of novel wood screw as claimed in claim 3; It is characterized in that: said oblique protruding rib true dip direction is or clockwise inclination counterclockwise along twill knurled segment circumferencial direction, and the protruding rib true dip direction of said oblique protruding rib true dip direction and supporting surface in the same way.
8. a kind of novel wood screw as claimed in claim 1 is characterized in that: said protruding rib and oblique protruding rib are equipped with blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120289572 CN202182094U (en) | 2011-08-10 | 2011-08-10 | Novel wood screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120289572 CN202182094U (en) | 2011-08-10 | 2011-08-10 | Novel wood screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202182094U true CN202182094U (en) | 2012-04-04 |
Family
ID=46175132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120289572 Expired - Lifetime CN202182094U (en) | 2011-08-10 | 2011-08-10 | Novel wood screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202182094U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996595A (en) * | 2012-12-18 | 2013-03-27 | 庆达科技股份有限公司 | Wood screw |
| CN104179770A (en) * | 2013-05-24 | 2014-12-03 | Spax国际两合公司 | Screw element |
| CN104948555A (en) * | 2015-06-16 | 2015-09-30 | 浙江天开实业有限公司 | Double-layer head plum blossom-shaped groove knurling tail cutting screw with six ribs |
| WO2018210967A1 (en) * | 2017-05-17 | 2018-11-22 | Schmid Schrauben Hainfeld Gmbh | Wood screw made of metal for timber construction |
| TWI720899B (en) * | 2020-05-29 | 2021-03-01 | 吉瞬興業股份有限公司 | Fast chip removal reaming screw |
| CN115325002A (en) * | 2022-08-24 | 2022-11-11 | 芜湖天科航空科技有限公司 | Novel multi-functional self-tapping screw of high adaptability |
-
2011
- 2011-08-10 CN CN 201120289572 patent/CN202182094U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996595A (en) * | 2012-12-18 | 2013-03-27 | 庆达科技股份有限公司 | Wood screw |
| CN102996595B (en) * | 2012-12-18 | 2015-08-12 | 庆达科技股份有限公司 | Wood screws |
| CN104179770A (en) * | 2013-05-24 | 2014-12-03 | Spax国际两合公司 | Screw element |
| CN104948555A (en) * | 2015-06-16 | 2015-09-30 | 浙江天开实业有限公司 | Double-layer head plum blossom-shaped groove knurling tail cutting screw with six ribs |
| CN104948555B (en) * | 2015-06-16 | 2018-04-13 | 浙江天开实业有限公司 | A kind of six muscle annular knurl Screw with tail having groove of bilayer head plum blossom groove band |
| WO2018210967A1 (en) * | 2017-05-17 | 2018-11-22 | Schmid Schrauben Hainfeld Gmbh | Wood screw made of metal for timber construction |
| TWI720899B (en) * | 2020-05-29 | 2021-03-01 | 吉瞬興業股份有限公司 | Fast chip removal reaming screw |
| CN115325002A (en) * | 2022-08-24 | 2022-11-11 | 芜湖天科航空科技有限公司 | Novel multi-functional self-tapping screw of high adaptability |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190719 Address after: 201419 No. 25 Baisha Road, Xinghuo Development Zone, Fengxian District, Shanghai Patentee after: Shanghai Meigu Handway Hardware Co., Ltd. Address before: 201419 No. 25 Baisha Road, Xinghuo Development Zone, Fengxian District, Shanghai Patentee before: Shanghai Moregood C & F Fastener Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120404 |
|
| CX01 | Expiry of patent term |