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公开(公告)号：US20190107137A1
公开(公告)日：2019-04-11
申请号：US15725493
申请日：2017-10-05
发明人： KOU-TSAIR SU , YU-JUNG SU
CPC分类号： F16B25/103 , F16B25/0015 , F16B25/0052 , F16B25/0057 , F16B25/0089
摘要： A screw includes a shank, a head connected thereto, a drilling portion opposite to the head, a first threaded section spirally formed on the shank, and a leading threaded section spirally extending upwards from the drilling portion. The two threaded section are disconnected so that a valley is formed between them. At least one cutting unit protrudes from the valley and has two ends connected to the first threaded section and the leading threaded section respectively. The leading threaded section assists the drilling portion in cutting and drilling into an object while screwing, and the cutting unit protruding from the valley severs fibers which are not cut by the leading threaded section completely to prevent the entanglement of the fibers. The valley helps accommodate and evacuate cut chips. Therefore, the drilling resistance is reduced effectively to increase the screwing efficiency.
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公开(公告)号：US20190085887A1
公开(公告)日：2019-03-21
申请号：US16059388
申请日：2018-08-09
发明人： KOU-TSAIR SU , YU-JUNG SU
摘要： A speedy-screwing screw includes a shank, a head connected thereto, a drilling portion opposite to the head, a plurality of main threads and auxiliary threads disposed on the shank and extending in opposite directions. Each auxiliary thread has a plurality of cutting sections, each of which has two flank surfaces converging at a crest. Adjacent flank surfaces are continuously connected in reverse curves so that the crests are connected to be a wavy arrangement. During a screwing operation, the main threads execute a main cutting action, and concurrently the auxiliary threads push and then sever wood fibers effectively, thereby providing a dual cutting effect to prevent the shank and the drilling portion from being entangled in the wood fibers, reduce the screwing resistance caused by the entanglement of wood fibers, and speeding up the screwing operation.
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公开(公告)号：US20140178149A1
公开(公告)日：2014-06-26
申请号：US13726928
申请日：2012-12-26
发明人： KOU-TSAIR SU , YU-JUNG SU
IPC分类号： F16B35/06
CPC分类号： F16B35/065
摘要： A fastener capable of speedily screwing provides a plurality of blocks on a bottom surface of a head and an accommodating area formed between any two adjacent blocks. Each block includes a first wall arranged at one side of the accommodating area and extended upward from the bottom surface, a second wall extending from the first wall to the other side of another adjacent accommodating area, and a cutting edge formed at a convergence of the first wall and the second wall. In screwing, the blocks assist in cutting to achieve a speedy screwing effect, and the accommodating area allows the cutting debris generated accordingly to be received therein so as to remain a firm engaging force between the fastener and an object. Further, there is no extra cutting debris protruding out of the object after screwing, which increases the flatness, and also enhances the screwing force of the fastener.
摘要翻译： 能够快速旋拧的紧固件在头部的底表面和形成在任何两个相邻块之间的容纳区域上提供多个块。 每个块包括布置在容纳区域的一侧并从底表面向上延伸的第一壁，从第一壁延伸到另一个相邻容纳区域的另一侧的第二壁，以及形成在 第一墙和第二墙。 在拧紧时，块有助于切割以实现快速的拧紧效果，并且容纳区域允许相应地生成的切割碎屑被容纳在其中，以便在紧固件和物体之间保持牢固的接合力。 此外，在旋拧后没有从物体突出的额外的切削屑，这增加了平坦度，并且还增强了紧固件的拧紧力。
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公开(公告)号：US20170159692A1
公开(公告)日：2017-06-08
申请号：US14962585
申请日：2015-12-08
发明人： KOU-TSAIR SU , YU-JUNG SU
CPC分类号： F16B25/0052 , F16B25/0015 , F16B25/0078 , F16B25/103
摘要： A fastener includes a shank, a head connected thereto, a drilling portion opposite to the head and a plurality of first threads and second threads spirally disposed on the shank. The second threads are affixed to the first threads and provided with a plurality of opening slots defined thereon. The opening slots expose portions of the first threads therethrough. The first threads divide the shank into a plurality of shank segments, each of which has a base part and a transition part extending outward from the base part to be inclined by 5 to 10 degrees. The opening slots formed on the second threads provide an auxiliary cutting effect and accommodate cut debris. The first threads reinforce the bearing and drilling force of the second threads. The inclined transition part helps increase the ability of resisting the driving torsion and attain an anti-loosening force, thereby increasing the fastening effect.
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公开(公告)号：US20230048078A1
公开(公告)日：2023-02-16
申请号：US17399416
申请日：2021-08-11
发明人： KOU-TSAIR SU , CHEN-LONG SU
IPC分类号： F16B25/00
摘要： A screw with multiple thread angles includes a shank, a main threaded portion having thread convolutions, and a head. Each thread convolution defines different thread angles from a root to a thread crest in sequence, namely a first thread angle ranging between 70 degrees and 75 degrees, a second thread angle ranging between 37 degrees and 43 degrees, and a third thread angle ranging between 20 degrees and 23 degrees. Notches are recessed into the thread crest for attaining a smooth removal of cut chips. The third thread angle assists each thread convolution in cutting a workpiece sharply to facilitate a quick cutting operation. The second thread angle and the first thread angle help widen a cutting track caused by the cutting operation gradually so that the thread convolutions are continuously drilled into the workpiece by a multi-stage reaming and drilling operation to achieve a quick screwing effect.
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公开(公告)号：US20230047308A1
公开(公告)日：2023-02-16
申请号：US17399396
申请日：2021-08-11
发明人： KOU-TSAIR SU , CHEN-LONG SU
摘要： A screw includes a head having a top face and a conical bottom surface, a shank, and thread convolutions. A chip guiding channel is recessedly formed on the conical bottom surface. On the conical bottom surface are spirally disposed a cutting portion which has a plurality cutting units sequentially arranged in a spiral manner, thereby allowing the chip guiding channel to be surrounded by the cutting units along a spiral track. The spiral arrangement of the cutting units assists the head in cutting fibers of a workpiece which are wound around the head into small chips in a continuous and spiral severing manner to reduce drilling torque and resistance, and the spirally-defined chip guiding channel also facilitates a smooth removal of the chips, thereby allowing the head to fit level with a top surface of the workpiece and increasing a fastening effect.
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公开(公告)号：US20210215185A1
公开(公告)日：2021-07-15
申请号：US16739529
申请日：2020-01-10
发明人： KOU-TSAIR SU , YU-JUNG SU
摘要： A self-drilling screw includes a leading section having a drill body and opposite discharge grooves formed on the drill body. The drill body and the discharge grooves meet at cutting edges. On the drill body are formed two blade portions connected to the cutting edges and tapering at respective second tips. The blade portion has a second included angle of not more than 50 degrees. Between the blade portions is formed a drilling portion terminating at a first tip and having a first included angle of not more than 60 degrees. Two opposite concave surfaces each extend from the drilling portion to each blade portion. The first tip and the second tips are situated at different places. Accordingly, the end of the leading section presents a shape of a curved bow riser to cut quickly and help quick removal of chips, thereby decreasing resistance and preventing the cracking problem.
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公开(公告)号：US20200206848A1
公开(公告)日：2020-07-02
申请号：US16235005
申请日：2018-12-28
发明人： KOU-TSAIR SU , CHEN-LONG SU
IPC分类号： B23K31/02
摘要： A welding method for manufacturing a bi-compositional screw includes a preparing operation, a welding operation and a forming operation. The preparing operation prepares two raw blanks made of different materials and respectively processed to provide a front section and a rear section. The welding operation places the two sections on a positioning device to allow the two sections to meet closely at a joint along an axis, and then applies a welding device to weld the two sections at the joint in a circumferential direction when the two sections are rotated in the same rotational direction, thereby attaining a bi-compositional blank without causing waste extruded out of the joint. The forming operation forms a plurality of threads on the bi-compositional blank to forma bi-compositional screw. The method prevents the generation of air and pores inside the joint after welding, reduces processing costs, and ensures preferable processing quality.
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公开(公告)号：US20200056647A1
公开(公告)日：2020-02-20
申请号：US16104325
申请日：2018-08-17
发明人： KOU-TSAIR SU
摘要： A fastener includes a head with a top face and a conical bottom face, and a shank with a threaded portion spiraling thereon and a drilling portion. The head includes a plurality of cutting portions and cutting ribs formed on the bottom face to thereby cut and shave fibers and accommodate chips. Each cutting portion extends towards the shank and includes a projecting blade formed circumferentially of the top face, and an adjoining wall and a flank wall respectively connected to the projecting blade and meeting at a cutting edge. The cutting ribs extend radially relative to the shank. The cutting portions and the cutting ribs cooperate to continue cutting and press remnants and the bulge down so that the head fits flush with the surface of the workpiece to thereby increase the evenness and the fastening effect after the head is fastened in position.
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公开(公告)号：US20140178150A1
公开(公告)日：2014-06-26
申请号：US13726936
申请日：2012-12-26
发明人： KOU-TSAIR SU , YU-JUNG SU
IPC分类号： F16B35/06
CPC分类号： F16B35/065 , F16B25/0015 , F16B25/0057
摘要： A wood screw provides a plurality of auxiliary cutting areas disposed on a bottom surface of a head and a flat area formed in any two adjacent auxiliary cutting areas. Each auxiliary cutting area includes at least two cutting grooves disposed at intervals and formed on the bottom surface, and a cutting edge formed at a convergence of the connective cutting grooves. When the bottom surface contacts the surface of the wood, the cutting edge cuts and scrapes off burrs generated around the drilling hole, and the scraped burrs are accommodated in the cutting grooves to prevent the burrs from exposing to the head after screwing. Further, the head is tightly screwed on the wood to enhance the screwing stabilization.
摘要翻译： 木螺钉提供了设置在头部的底表面上的多个辅助切割区域和形成在任何两个相邻辅助切割区域中的平坦区域。 每个辅助切割区域包括间隔设置并形成在底面上的至少两个切割槽和形成在连接切割槽的会聚处的切割刃。 当底面与木材表面接触时，切割刃切割并刮除钻孔周围产生的毛刺，并且刮削毛刺容纳在切割槽中，以防止毛刺在拧紧后暴露于头部。 此外，头部紧紧地拧在木头上以增强螺丝的稳定性。
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