WO2017159898A1 - Tapping screw having improved fastening force - Google Patents

Tapping screw having improved fastening force Download PDF

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Publication number
WO2017159898A1
WO2017159898A1 PCT/KR2016/002735 KR2016002735W WO2017159898A1 WO 2017159898 A1 WO2017159898 A1 WO 2017159898A1 KR 2016002735 W KR2016002735 W KR 2016002735W WO 2017159898 A1 WO2017159898 A1 WO 2017159898A1
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WO
WIPO (PCT)
Prior art keywords
fastening
screw thread
body portion
flank
thread
Prior art date
Application number
PCT/KR2016/002735
Other languages
French (fr)
Korean (ko)
Inventor
이진석
Original Assignee
주식회사 서울금속
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 주식회사 서울금속 filed Critical 주식회사 서울금속
Priority to KR1020167007382A priority Critical patent/KR101675471B1/en
Priority to PCT/KR2016/002735 priority patent/WO2017159898A1/en
Publication of WO2017159898A1 publication Critical patent/WO2017159898A1/en

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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
    • F16B12/00—Jointing of furniture or the like, e.g. hidden from exterior
    • F16B12/10—Jointing of furniture or the like, e.g. hidden from exterior using pegs, bolts, tenons, clamps, clips, or the like
    • F16B12/12—Jointing of furniture or the like, e.g. hidden from exterior using pegs, bolts, tenons, clamps, clips, or the like for non-metal furniture parts, e.g. made of wood, of plastics
    • F16B12/14—Jointing of furniture or the like, e.g. hidden from exterior using pegs, bolts, tenons, clamps, clips, or the like for non-metal furniture parts, e.g. made of wood, of plastics using threaded bolts or screws
    • F16B12/16—Jointing of furniture or the like, e.g. hidden from exterior using pegs, bolts, tenons, clamps, clips, or the like for non-metal furniture parts, e.g. made of wood, of plastics using threaded bolts or screws using self-tapping screws
    • 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

Definitions

  • the present invention relates to a tapping screw, and more particularly to a tapping screw having an improved fastening force that can improve the fastening area of the tapping screw fastened to the fastening object.
  • screws In general, screws (screws) generally have a strong fixing force when joining a plurality of components, including mechanical parts or electronics, easy construction, and can adjust the fastening force according to the fastening partner (or the base material). Use screws that are easy to disassemble at the same time.
  • Such screws are divided into triangular screws, square screws, trapezoidal screws, toothed screws, round screws, ball screws, etc., depending on the cross-sectional shape of the thread formed on the outer circumferential surface. It is divided into various head screws.
  • the shape of the screw is divided into a variety of small screws, stop screws, screws, tapping screws, heli-inserts.
  • the tapping screw is a screw that can be clipped to form a female screw on the fastening object by the screw itself, it is possible to reduce the deformation of the fastening partner and to reduce the fastening torque.
  • the tapping screw includes a pot tapping screw, a plate tapping screw, a round plate tapping screw, a hexagonal tapping screw and the like according to the head shape.
  • the thread length ie, female thread
  • the thread length is not formed in the fastening object from the beginning due to the characteristics of the tapping screw fastened to the fastening object by the screw thread of the screw itself, when the fastening force is caused by the friction force between the fastening object and the thread, There is a problem that it does not have a lot or the thread slips and does not have a fastening force or high fastening force to the fastening object at the desired angle.
  • An object of the present invention is to provide a tapping screw having an improved fastening force that can improve the fastening area between the tapping screw fastened to the fastening object and the fastening object.
  • the head For solving the above problems, the present invention, the head; And a body portion having one end connected to the head and having a plurality of threads provided on an outer circumferential surface thereof, wherein the plurality of threads are formed in the entire longitudinal direction of the body portion or at least a predetermined section in the longitudinal direction of the body portion. And a plurality of fastening screw threads, wherein the plurality of fastening screw threads can provide a tapping screw having an improved fastening force, characterized in that the width of the fastening screw thread is formed to increase from the other end of the body portion toward one end of the body portion. .
  • the fastening screw thread includes a first flank surface that is a flank surface facing toward the other end of the body portion, and a second flank surface that is a flank surface facing toward one end of the body portion.
  • Each of the fastening screws has a first flank side angle formed by the axis of the first flank and the body portion to decrease from the other end of the body portion toward one end of the body portion, and the axis of the second flank surface and the body portion is reduced.
  • the second flank side angle to be formed is characterized in that the same from the other end of the body portion to one end of the body portion.
  • the plurality of fastening screws are all characterized by having the same thread height.
  • the body part includes an introduction part, a fastening part and a completion part sequentially provided in the direction of one end of the body part from the other end of the body part, and the plurality of fastening screws have the fastening part or the fastening part and It is characterized in that formed in the completed portion.
  • At least one incision thread having a height greater than the height of the fastening screw thread and a width smaller than the width of the fastening screw thread is provided on the outer circumferential surface of the introduction portion.
  • the pitch between the incision screw thread and the fastening screw thread and the pitch between the fastening screw thread and another fastening screw thread adjacent to the fastening screw thread are increased from the other end of the body part toward one end of the body part.
  • the incision screw thread has a flank surface having a straight cross section
  • the fastening screw thread is formed to have a flank surface having a curved cross section
  • the plurality of threads may include a first flank angle formed by a first flank surface, which is a flank surface facing the other end side of the body portion, and a vertical line with respect to the axis of the body portion, and one end side of the body portion. And a second flank angle formed by a second flank face which is a facing flank face and a vertical line with respect to an axis of the body portion, wherein the plurality of fastening screws have a first flank angle greater than or equal to the second flank angle.
  • At least one asymmetric screw thread having the first flank angle smaller than the second flank angle is provided on the outer circumferential surface of the completion part.
  • At least one or more threads of the last tightening screw thread facing the asymmetric thread among the asymmetric threads and the plurality of tightening threads are more than the first flank surface or the second flank surface at the portion where the thread and the body portion meet. Characterized in that the transition portion formed at a gentle angle.
  • the tapping screw with improved tightening force of the present invention is improved in the tightening force of the tapping screw by the incision screw thread formed in the inlet portion of the screw, and the tightening screw thread formed in the fastening portion and the completed portion is a female thread formed inside the fastening object by the incision thread. Expansion in the width direction increases the tightening area can further improve the tightening force of the tapping screw and reduce the tightening torque.
  • tapping screw having improved fastening force of the present invention can be prevented from being released from the fastening object as the fastening area of the fastening object is increased by the fastening screw thread formed to have a relatively large width.
  • FIG. 1 is a view showing a tapping screw with improved fastening force according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of a tapping screw having an improved fastening force shown in FIG. 1.
  • FIG. 3 is a view for explaining the shape of the tapping screw shown in FIG.
  • FIG. 4 is a view for explaining the pitch of the tapping screw shown in FIG.
  • FIG. 5 is a view showing a tapping screw according to a further embodiment of the present invention.
  • FIG. 6 is an enlarged view of a part of the tapping screw illustrated in FIG. 5.
  • Embodiments of the present invention specifically illustrate ideal embodiments of the present invention. As a result, various modifications of the drawings are expected. Thus, the embodiment is not limited to the specific form of the illustrated region, but includes, for example, modification of the form by manufacture.
  • tapping screw 100, hereinafter referred to as “tapping screw” is improved fastening force according to an embodiment of the present invention.
  • FIG. 1 is a view showing a tapping screw with improved tightening force according to an embodiment of the present invention
  • Figure 2 is a cross-sectional view of the tapping screw with improved tightening force shown in Figure 1
  • Figure 3 illustrates the shape of the tapping screw shown in Figure 2 4
  • 4 are views for explaining the pitch of the tapping screw shown in FIG. 2.
  • the tapping screw 100 is connected to the head 110 and the head 110 and a plurality of threads 130 are provided on the outer circumferential surface thereof. It may include a body portion 120 to be.
  • the head 110 is a portion connected to the body 120.
  • One end of the head 110 may be connected to the body portion 120, the other end may be a fastening portion (not shown).
  • a fastening part (not shown) formed at the other end of the head 110 is a part into which a tool for fastening the tapping screw 100 to a fastening object (not shown) may be inserted, and a tool may be inserted therein. It is preferable to be provided in the form of a groove or groove so that.
  • the body 120 is completely inserted into the fastening object (not shown) by a tool inserted into the fastening part (not shown) of the head 110, one end of the head 110 is fastened to the fastening object (not shown). ) Can be in full contact.
  • the shape of the head 110 is illustrated in the form of a cylinder in the drawing, the shape of the head 110 is not necessarily limited thereto, and may be formed in various shapes such as a rectangle and a hexagon.
  • one end of the body 120 may be connected to the head 110, and a plurality of threads 130 may be provided on an outer circumferential surface of the body 120.
  • the body portion 120 may be formed in a cylindrical shape having a length narrower than the width of the head 110 and the longitudinal direction.
  • a plurality of threads 130 may be provided on the outer circumferential surface of the body 120 having a cylindrical shape.
  • the plurality of threads includes a plurality of fastening screws in the entire longitudinal direction of the body portion or at least a predetermined section in the longitudinal direction of the body portion.
  • the body portion 120 is inserted into a fastening object (not shown) by a tool fitted to the head 110, and at this time, the other end of the body portion 120 is fastening object (not shown). It can be formed into a conical shape so as to penetrate).
  • the body portion 120 is provided with a plurality of threads 130 and the thread 130 is provided on the body portion 120, the tapping screw 100 is a fastening object (not shown)
  • Introducing part 122, fastening part 124 and the completion part 126 along the fastening direction (see FIG. Can be divided into
  • the fastening direction means one end of the body portion 120 from the other end of the body portion 120 (that is, the opposite end of the portion in which the head portion 110 is provided). Means the direction toward the head 110 is provided).
  • the body portion 120 is the introduction portion 122, the fastening portion 124 and the completion from the end (that is, the other end) to the head 110 in the first contact with the fastening object (not shown) in order It may be provided as a part 126.
  • the fastening portion or the fastening portion and the completion portion, the plurality of fastening screw thread may be provided.
  • the introduction portion 122 is a portion in which the body 120 starts to enter the fastening object (not shown), and the thread 130 and the fastening object (not shown) are first screwed together, and the fastening object ( It is a portion that forms a female thread corresponding to the screw thread 130 in the inside of the (not shown).
  • the introduction portion 122 may be provided with a cutting screw thread 132 having a cross section of the flank surface 131 formed in a straight line shape.
  • the cutting thread 132 may be formed in at least one or more in the introduction portion 122, it may be provided over the introduction portion 122 and the fastening portion 124 as necessary.
  • the cutting thread 132 has a height L1 larger than the height L2 of the fastening screw thread 134 and a width W1 smaller than the width W2, W3, W4, W5 of the fastening screw thread 134. It is formed to have). That is, the tapping screw 100 may be tapped by cutting the inside of the fastening object (not shown) in the height direction of the cutting screw thread 132 by the cutting screw thread 132 provided in the introduction part 122.
  • the incision screw thread 132 makes the tapping fastening while cutting the inside of the fastening object (not shown) in the height direction, the power lock of the fastening object (not shown) and the tapping screw 100 by the incision screw thread 132. ) Is possible.
  • the fastening part 124 is the body portion 120 enters the fastening object (not shown) by the introduction portion 122, the threaded portion 130 is fastened to the fastening object (not shown) after the introduction portion 122.
  • the completion portion 126 is a portion where the thread 130 is fastened with the fastening object (not shown).
  • the fastening part 124 and the completion part 126 may be fastened with the fastening object (not shown) through the female thread formed inside the fastening object (not shown) by the cutting thread 132 of the introduction part 122. have.
  • the fastening screw thread 134 formed in the fastening portion 124 and the completion portion 126 has a straight cross-sectional shape of the flank surface 133 similarly to the cutting thread thread 132 formed in the inlet portion 122. It is preferable to form.
  • the fastening screw thread 134 is a first flank which is a flank surface facing toward the other end of the body portion 120 (that is, toward the fastening direction F2 of FIG. 2).
  • Surface 133a a second flank surface 133b which is a flank surface facing one end of the body portion 120 (that is, facing the direction opposite to the fastening direction F2 of FIG.
  • flank angle formed by the flank surface 133a and the second flank surface 133b i.e., the angle of the mountain portion of the fastening screw thread
  • the axis of the first flank surface 133a and the body portion 120 or First flank lateral angle ⁇ formed in the axial direction A, and second flank lateral angle formed by the axial or axial direction A of the second flank 133b and the body portion 120. ⁇ ).
  • the fastening screw thread 134 formed in the fastening part 124 and the completion part 126 has a curved cross-sectional shape of the flank surface 133 unlike the cutting thread thread 132 formed in the inlet part 122.
  • a fastening screw thread 134 to be formed may be provided.
  • a fine curve or curved surface may be formed in the peak portion of the thread.
  • the cross section of the flank surface 133 of the fastening screw thread 134 has a curved shape
  • its curvature may vary depending on the type of fastening object (not shown). That is, the flank surface 133 of the fastening screw thread 134 has a predetermined curvature, and as the curvature of the flank surface 133 of the fastening screw thread 134 increases, the fastening object (not shown) and the fastening screw thread 134 become larger. The frictional force is increased, and accordingly, the tapping screw 100 may improve the fastening force with respect to the fastening object (not shown).
  • the curvature of the flank surface 133 of the fastening screw thread 134 is too large to form a smooth curve, the longitudinal length of the tapping screw 100 becomes long or on the tapping screw 100. Since the number of threads 130 becomes too small, the curvature of the flanks 133 of the fastening screw thread 134 is preferably determined in consideration of the required fastening force.
  • the cross-sectional shape of the flank surface 133 is curved, unlike the shape of the fastening screw thread 134 formed in the fastening portion 124 and the completion portion 126 is different from the shape of the incision screw thread 132 formed in the inlet portion 122.
  • the reason for having is because the role of the cutting screw thread 132 formed in the introduction portion 122 and the plurality of fastening screw thread 134 formed in the fastening portion 124 and the completion portion 126 is different. That is, the incision screw thread 132 formed in the introduction part 122 serves to tap and fasten the inside of the fastening object (not shown) in the height L direction, and the fastening part 124 and the completion part 126.
  • the fastening screw thread 134 formed at the inside of the fastening object (not shown) cut by the incision screw thread 132 that is, the width of the screw thread formed inside the fastening object (not shown) by the cutting thread 132. Since the tapping fastening is further extended in the (W) direction, the incision screw thread 132 formed in the inlet 122 and the fastening screw thread 134 formed in the fastening part 124 and the completion part 126 may be formed differently. It is not there.
  • the cross-sectional shape of the flank surface 133 of the fastening screw thread 134 may be formed to have a straight cross-sectional shape instead of a curved line according to the required fastening force.
  • the fastening screw thread 134 is to increase the fastening force by further expanding the female thread formed on the fastening object (not shown) by the incision screw thread 132 in the width (W) direction of the screw thread, so that the flank must be Face 133 need not be formed in the shape of a curved cross section. That is, the fastening screw thread 134 may be formed in a curved or straight cross-sectional shape if the height L is smaller than the cutting thread thread 132 and the width W is larger.
  • the height L1 of the cutting thread 132 formed in the inlet 122 may be greater than the height L2 of the fastening screw 134 formed in the fastening part 124 and the completion part 126.
  • the height L1 of the incision screw thread 132 may be provided about twice as large as the height L2 of the fastening screw thread 134, and the height of the incision screw thread 132 is fastened. It may vary depending on the fastening force required for the object (not shown). At this time, it is preferable that the heights L2 of the fastening screw threads 134 formed on the fastening part 124 and the completion part 126 are all formed at the same height.
  • the fastening screw thread 134 only needs to further expand the female screw thread already formed inside the fastening object (not shown) by the incision screw thread 132 in the width W2 (W3) direction of the fastening screw thread 134. Therefore, it is not necessary to form different height of the plurality of fastening screw thread 134.
  • the present invention is not limited thereto, and the height of the fastening screw threads 134 may vary depending on a fastening force required for a fastening object (not shown), to which the tapping screw 100 is fastened.
  • the width W of the incision screw thread 132 may be smaller than the width W2 and W3 of the fastening screw thread 134.
  • the incision screw thread 132 cuts the inside of the fastening object (not shown) in the height direction from the inlet portion 122 of the tapping screw 100 to form a female screw thread, the incision screw thread 132 is dared. It is not necessary to increase the width W1 of.
  • the width W2 and W3 of the fastening screw thread 134 is preferably formed at least equal to or wider than the width W1 of the cutting thread thread 132.
  • fastening screw thread 134 extends the inside of the fastening object (not shown) cut by the cutting screw thread 132 in the direction of the width W2 (W3) of the fastening screw thread 134.
  • the width W1 of the cut thread 132 formed in the inlet 122 and the width W2 to W5 of the plurality of fastening screw threads 134 formed in the fastening part 124 and the completion part 126 are fastening parts. It may be formed to gradually increase from 124 to the completion unit 126.
  • the incision screw thread 132 enters the fastening object for the first time to form a female screw thread identical to the shape of the incision screw thread 132 on the fastening object.
  • the incision screw thread 132 is tapped and fastened while cutting the inside of the fastening object in the height direction of the incision screw thread 132.
  • the first tightening screw thread 134a positioned at the rear of the cutting screw thread 132 enters the female screw thread formed by the cut screw thread 132, and the width W2 of the first tightening screw thread 134a is the cut screw thread.
  • the first fastening screw thread 134a is fastened to the fastening object while extending the female thread thread formed by the cut screw thread 132 in the width direction.
  • the second fastening screw thread 134b enters the female screw thread extended in the width direction by the first fastening screw thread 134a.
  • the width W3 of the second fastening screw thread 134b is the first fastening screw thread 134a. Since the width W2 is greater than the width W2, the second tightening screw thread 134b is fastened to the fastening object while the female screw thread formed by the first screw thread 134a extends in the width direction.
  • each of the plurality of fastening screws 134a, 134b, 134c, and 134d has a first flank side angle ⁇ of the fastening screw thread 134. It is formed to decrease toward the other end of the body portion 120 from the other end of the body portion 120, and at the same time each of the plurality of fastening screw threads 134a, 134b, 134c, 134d, the fastening screw thread 134
  • the second flank side angle ⁇ of) is formed to be the same from the other end of the body portion 120 to one end of the body portion.
  • the first flank side angle ⁇ of the plurality of fastening screws is formed such that ⁇ 1> ⁇ 2> ⁇ 3> ⁇ 4>...> ⁇ n with reference to FIG. 4, and the first flank side of the plurality of fastening threads.
  • the first side flank angle ( ⁇ ) of the plurality of coupling threads are the threads of the multiple fastening each successively ⁇ 1> ⁇ 2> ⁇ 3> ⁇ 4>...> can be formed such that ⁇ n
  • the plurality of fastening screws may be formed such that the first flank lateral angle ⁇ is ⁇ 1> ⁇ 2> ⁇ 3> ⁇ 4>...> ⁇ n for each consecutive section.
  • the plurality of fastening screw threads have a width from one end of the body portion to the other end of the body portion due to the gradual increase of the first flank side angle. It can be configured to increase gradually to not only significantly increase the tightening force between the tapping screw and the fastening object, but also because the second flank side angles are the same, the second flank of the female thread that the second flank surface is formed on the fastening object Since the surface is always formed at a constant angle, the second flank surface of the fastening thread can always be in close contact with the second flank surface of the female thread, so that the anti-loosening area can be increased after the tapping screw is fastened to the fastening object. The prevention effect can be significantly improved.
  • the pitch (P) between the cutting screw thread 132 and the fastening screw thread 134 may be larger toward the opposite direction to the fastening direction (F) of the tapping screw 100.
  • the pitch P is a distance between the threads 130 adjacent to each other among the threads 130 of the tapping screw 100. That is, the pitch P may be a distance between the cutting thread 132 of the tapping screw 100 and the adjacent fastening screw thread 134 or the distance between the fastening screw thread 134 and another fastening screw thread 134.
  • the pitch P of the fastening screw thread 134 adjacent to the incision screw thread 132 and the pitch P of the other fastening screw thread 134 adjacent to the screw thread 134 are fastened to the fastening part 124 at the inlet 122. , To be gradually increased toward the completion unit 126.
  • the pitch P between the incision thread 132 of the inlet 122 and the adjacent fastening screw thread 134 is denoted by P1, and another fastening screw thread adjacent to the fastening screw thread 134.
  • P1 the pitch P between the incision thread 132 of the inlet 122 and the adjacent fastening screw thread 134
  • another fastening screw thread adjacent to the fastening screw thread 134 the pitch P between 134
  • P3 and P4 the pitch P between the next tightening screw thread 134 and another fastening screw thread 134 adjacent
  • the cut thread 132 and the fastening screw thread ( The order of the magnitudes of the pitches P between 134) may be referred to as 'P1 ⁇ P2 ⁇ P3 ⁇ P4'.
  • the tightening screw thread 134 has a height smaller than the cutting screw thread 132 but has a width larger than the cutting screw thread 132, a female thread thread formed by the cutting screw thread 132 in the fastening object.
  • the fastening screw thread 134 is fastened while extending the width direction to increase the fastening force between the fastening screw thread 134 and the fastening object.
  • the fastening force between the fastening screw thread 134 and the fastening object can be further increased.
  • the tapping screw 100 having improved tightening force according to the present invention is improved in the tightening force of the tapping screw by the incision screw thread formed at the inlet portion of the screw, and the tightening screw thread formed at the fastening portion and the completed portion is disposed on the incision thread.
  • expanding the female thread formed in the interior of the fastening object in the width direction by increasing the fastening area can further improve the fastening force of the tapping screw and reduce the fastening torque.
  • the tapping screw 100 having improved fastening force of the present invention can prevent the tapping screw from being released from the fastening object as the fastening area of the fastening object is increased by the fastening screw thread formed to have a relatively large width.
  • FIG. 5 is a view showing a tapping screw according to a further embodiment of the present invention
  • Figure 6 is an enlarged view showing a part of the tapping screw shown in FIG.
  • tapping screw 200 according to a further embodiment of the present invention will be described with reference to points different from the above-described embodiment or added based on the above-described embodiment.
  • the tapping screw 200 includes a head 110 and a body in which one end portion is in contact with the head 110 but a plurality of threads 130 are provided on an outer circumferential surface thereof. It may include wealth.
  • the same reference numerals are given, and the description thereof will apply mutatis mutandis to the above-described embodiments.
  • a plurality of threads 230 may be provided in the body 120 illustrated in FIGS. 5 and 6.
  • the plurality of threads 230 are inclined from the symmetrical screw thread 231, the first flank surface 234, 234 'and the second flank surface 235, 235' has a different inclination and the screw thread 230
  • First flank angle ⁇ ie, the angle formed by the first flank plane, which is the flank face toward the other end of the body portion, and a vertical line L with respect to the axis of the body portion
  • the second flank angle ⁇ is formed differently or has an asymmetrical shape having different sizes.
  • any one pair of threads 230 of the threads facing each other may be formed as an asymmetric screw thread 233, 233 ′.
  • the asymmetrical screw thread 233, 233 ' is provided at a position spanning the fastening portion 124 and the completion portion 126 of the body portion 120 or the position of the completion portion, and to be located in the opposite direction Can be. Accordingly, when the tapping screw 200 is fastened to the fastening object 101, the asymmetrical screw threads 233 and 233 ′ provided in the facing direction may be fastened while pushing the fastening object 101.
  • the asymmetrical screw thread 233 located relatively to the fastening direction of the tapping screw 200 is inclined toward the direction of travel of the tapping screw 200.
  • the asymmetrical screw thread 233 ′ which is formed to be positioned in a forward direction relative to the fastening direction of the tapping screw 200 may be inclined toward the opposite direction of the fastening direction of the tapping screw 200.
  • the second flank surface 235 is slower than the first flank surface 234. It may be formed to have one slope. As formed in this way, a stress ⁇ may be concentrated between the first flank 234 having a steep slope and the fastening object 101.
  • the transition part 240 may be formed at a portion where the cross section meets.
  • the first flank 234 ' has a second flank (asymmetrical screw thread 233' located relatively forward with respect to the fastening direction of the tapping screw 200).
  • 235 ') may have a gentler slope.
  • a stress ⁇ may be concentrated between the second flank 235 ′ having a steep slope and the fastening target 101.
  • a transition part 240' is formed at a portion where the lower end of the second flank 235 'having a steep inclination and the body part 20 meet. Can be.
  • a planar surface having a steep slope as the threads 230 are formed so that the asymmetrical screw threads 233, 233 'facing each other are inclined toward each other. Since the stress? Applied to the fastening object 101 acts in a direction facing each other, the tapping screw 200 can be more effectively prevented from being released from the fastening object 101.
  • the anti-loosening tapping screw (100, 200) of the present invention it is possible to reduce the defective rate that may occur during the rolling process to form a thread due to the transition portion is formed.

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Abstract

The present invention relates to a tapping screw having an improved fastening force, that can improve a fastening area of a tapping screw fastened to an object to be fastened. More particularly, the present invention relates to a tapping screw having an improved fastening force, the tapping screw comprising: a head portion; and a body portion having a plurality of threads formed at an outer circumferential surface thereof and having one end connected to the head portion, wherein the plurality of threads comprise a plurality of fastening threads in the entire length direction of the body portion or in at least a predetermined section of the length direction of the body portion, and the plurality of fastening threads are formed such that the width of the fastening threads increases in a direction from the other end of the body portion to the one end of the body portion.

Description

체결력이 향상된 태핑나사Tapping Screws with Improved Tightening Force
본 발명은 태핑나사에 관한 것으로, 더욱 상세하게는 체결 대상물에 체결되는 태핑나사의 체결면적을 향상시킬 수 있는 체결력이 향상된 태핑나사에 관한 것이다. The present invention relates to a tapping screw, and more particularly to a tapping screw having an improved fastening force that can improve the fastening area of the tapping screw fastened to the fastening object.
일반적으로 나사(스크류; screw)는 기계부품이나 전자기기를 포함하여 복수의 부품을 결합시킬 경우에 통상 강한 고정력을 갖는 한편, 시공성이 용이하며, 체결 상대물(또는 모재)에 따라 체결력을 조절할 수 있는 동시에 해체가 용이한 나사를 이용한다. In general, screws (screws) generally have a strong fixing force when joining a plurality of components, including mechanical parts or electronics, easy construction, and can adjust the fastening force according to the fastening partner (or the base material). Use screws that are easy to disassemble at the same time.
이와 같은 나사는 외주면에 형성된 나사산의 단면 형상에 따라 삼각 나사, 사각 나사, 사다리꼴 나사, 톱니 나사, 둥근 나사, 볼나사 등으로 나뉘며, 머리 형상에 따라 무두 나사, 접시머리 나사, 둥근머리 나사 및 납작머리 나사 등으로 다양하게 구분된다. Such screws are divided into triangular screws, square screws, trapezoidal screws, toothed screws, round screws, ball screws, etc., depending on the cross-sectional shape of the thread formed on the outer circumferential surface. It is divided into various head screws.
또한, 나사의 형태에 따라 작은 나사, 멈춤 나사, 나사못, 태핑나사, 헬리 인서트 등으로 다양하게 구분된다. In addition, according to the shape of the screw is divided into a variety of small screws, stop screws, screws, tapping screws, heli-inserts.
이때, 태핑나사(Tapping screw)는 나사 자체로 체결 대상물에 암나사를 형성하는 나사 깎기가 가능한 나사로써, 체결 상대물의 변형을 적게 하고 체결 회전력을 줄일 수 있게 한다. 이러한 태핑나사는 머리 모양에 따라서 냄비 태핑나사, 접시 태핑나사, 둥근 접시 태핑나사, 6각 태핑나사 등이 있다. At this time, the tapping screw (Tapping screw) is a screw that can be clipped to form a female screw on the fastening object by the screw itself, it is possible to reduce the deformation of the fastening partner and to reduce the fastening torque. The tapping screw includes a pot tapping screw, a plate tapping screw, a round plate tapping screw, a hexagonal tapping screw and the like according to the head shape.
한편, 이러한 태핑나사는 체결 대상물에 체결이 완료된 상태에서, 외부로부터 전달된 진동이나 물리적인 충격을 포함하여 온도의 변화에 따른 수축과 팽창 과정에서 체결력이 저하되는 문제점이 있다. On the other hand, in such a state that the tapping screw is fastened to the fastening object, there is a problem that the fastening force is reduced in the process of contraction and expansion according to the change of temperature, including vibration or physical shock transmitted from the outside.
또한, 나사 자체의 나사산에 의해 체결 대상물에 체결되는 태핑나사의 특성상 체결 대상물에 처음부터 나사산의 길(즉, 암나사산)이 형성되어 있지 않기 때문에, 체결 대상물과 나사산의 마찰력에 의해 체결할 때 힘이 많이 들거나 혹은 나사산이 미끄러져 원하는 각도로 체결 대상물에 정확하게 체결되지 않거나 높은 체결력을 가지지 못하는 문제점이 있다. In addition, since the thread length (ie, female thread) is not formed in the fastening object from the beginning due to the characteristics of the tapping screw fastened to the fastening object by the screw thread of the screw itself, when the fastening force is caused by the friction force between the fastening object and the thread, There is a problem that it does not have a lot or the thread slips and does not have a fastening force or high fastening force to the fastening object at the desired angle.
따라서, 본 출원인은, 상기와 같은 문제점을 해결하기 위해서 본 발명은 제안하게 되었으며, 이와 관련된 선행기술문헌으로는, 대한민국 등록실용신안공보 20-0478117호 (발명의 명칭: 목재에 체결이 용이한 나사못, 등록일: 2015.08.24)가 있다.Therefore, the present applicant, the present invention has been proposed in order to solve the above problems, as related prior art documents, Republic of Korea Utility Model Publication No. 20-0478117 (name of the invention: screw fastening to wood easy to screw , Registration date: 2015.08.24).
본 발명의 목적은 체결 대상물에 체결되는 태핑나사와 체결 대상물과의 체결 면적을 향상시킬 수 있는 체결력이 향상된 태핑나사를 제공하는 것이다. An object of the present invention is to provide a tapping screw having an improved fastening force that can improve the fastening area between the tapping screw fastened to the fastening object and the fastening object.
본 발명이 해결하고자 하는 과제는 이상에서 언급한 과제들로 제한되지 않으며, 언급되지 않은 또 다른 과제들은 아래의 기재로부터 당업자에게 명확하게 이해될 수 있을 것이다. The problem to be solved by the present invention is not limited to the above-mentioned problem, another task that is not mentioned will be clearly understood by those skilled in the art from the following description.
전술한 과제를 해결하기 위한 본 발명의 일 실시예에 따르면, 본 발명은, 머리부; 및 일단부가 상기 머리부와 연결되되, 외주면에 복수 개의 나사산이 마련되는 몸체부;를 포함하고, 상기 복수 개의 나사산은 상기 몸체부의 길이방향 전체에서 또는 상기 몸체부의 길이방향의 적어도 일정 구간 이상에서 다수 개의 체결나사산을 포함하며, 상기 다수 개의 체결나사산은, 상기 체결나사산의 너비가 상기 몸체부의 타단부에서 상기 몸체부의 일단부로 갈수록 증가되도록 형성되는 것을 특징으로 하는 체결력이 향상된 태핑나사를 제공할 수 있다.According to an embodiment of the present invention for solving the above problems, the present invention, the head; And a body portion having one end connected to the head and having a plurality of threads provided on an outer circumferential surface thereof, wherein the plurality of threads are formed in the entire longitudinal direction of the body portion or at least a predetermined section in the longitudinal direction of the body portion. And a plurality of fastening screw threads, wherein the plurality of fastening screw threads can provide a tapping screw having an improved fastening force, characterized in that the width of the fastening screw thread is formed to increase from the other end of the body portion toward one end of the body portion. .
또한, 바람직하게는, 상기 체결나사산은, 상기 몸체부의 타단부 쪽을 향하는 플랭크면인 제1 플랭크면과, 상기 몸체부의 일단부 쪽을 향하는 플랭크면인 제2 플랭크면을 포함하고, 상기 다수 개의 체결나사산 각각은, 상기 제1 플랭크면과 상기 몸체부의 축선이 형성하는 제1 플랭크 측면 각도가 상기 몸체부의 타단부에서 상기 몸체부의 일단부로 갈수록 감소되도록 그리고 상기 제2 플랭크면과 상기 몸체부의 축선이 형성하는 제2 플랭크 측면 각도가 상기 몸체부의 타단부에서 상기 몸체부의 일단부까지 동일하도록 형성되는 것을 특징으로 한다.Preferably, the fastening screw thread includes a first flank surface that is a flank surface facing toward the other end of the body portion, and a second flank surface that is a flank surface facing toward one end of the body portion. Each of the fastening screws has a first flank side angle formed by the axis of the first flank and the body portion to decrease from the other end of the body portion toward one end of the body portion, and the axis of the second flank surface and the body portion is reduced. The second flank side angle to be formed is characterized in that the same from the other end of the body portion to one end of the body portion.
또한, 바람직하게는, 상기 다수 개의 체결나사산은 모두 동일한 나사산 높이를 가지는 것을 특징으로 한다.In addition, preferably, the plurality of fastening screws are all characterized by having the same thread height.
또한, 바람직하게는, 상기 몸체부는 상기 몸체부의 타단부에서부터 상기 몸체부의 일단부 방향으로 순차적으로 마련된 도입부, 체결부 및 완료부를 포함하고, 상기 다수 개의 체결나사산은 상기 체결부에 또는 상기 체결부 및 상기 완료부에 형성되는 것을 특징으로 한다.In addition, preferably, the body part includes an introduction part, a fastening part and a completion part sequentially provided in the direction of one end of the body part from the other end of the body part, and the plurality of fastening screws have the fastening part or the fastening part and It is characterized in that formed in the completed portion.
또한, 바람직하게는, 상기 도입부의 외주면에는, 상기 체결나사산의 높이보다 큰 높이 및 상기 체결나사산의 너비보다 작은 너비를 가지는 적어도 하나 이상의 절개나사산이 구비되는 것을 특징으로 한다.In addition, preferably, at least one incision thread having a height greater than the height of the fastening screw thread and a width smaller than the width of the fastening screw thread is provided on the outer circumferential surface of the introduction portion.
또한, 바람직하게는, 상기 절개나사산과 상기 체결나사산 사이의 피치 및 상기 체결나사산과 인접한 다른 체결나사산 사이의 피치는 상기 몸체부의 타단부에서 상기 몸체부의 일단부로 갈수록 증가되는 것을 특징으로 한다.Further, preferably, the pitch between the incision screw thread and the fastening screw thread and the pitch between the fastening screw thread and another fastening screw thread adjacent to the fastening screw thread are increased from the other end of the body part toward one end of the body part.
또한, 바람직하게는, 상기 절개나사산은 단면이 직선인 플랭크면을 가지고, 상기 체결나사산은 단면이 곡선인 플랭크면을 가지도록 형성되는 것을 특징으로 한다.In addition, preferably, the incision screw thread has a flank surface having a straight cross section, and the fastening screw thread is formed to have a flank surface having a curved cross section.
또한, 바람직하게는, 상기 복수 개의 나사산은, 상기 몸체부의 타단부 쪽을 향하는 플랭크면인 제1 플랭크면과 상기 몸체부의 축선에 대한 수직선이 형성하는 제1 플랭크각과, 상기 몸체부의 일단부 쪽을 향하는 플랭크면인 제2 플랭크면과 상기 몸체부의 축선에 대한 수직선이 형성하는 제2 플랭크각을 포함하고, 상기 다수 개의 체결나사산은 상기 제1 플랭크각이 상기 제2 플랭크각 이상인 것을 특징으로 한다.Preferably, the plurality of threads may include a first flank angle formed by a first flank surface, which is a flank surface facing the other end side of the body portion, and a vertical line with respect to the axis of the body portion, and one end side of the body portion. And a second flank angle formed by a second flank face which is a facing flank face and a vertical line with respect to an axis of the body portion, wherein the plurality of fastening screws have a first flank angle greater than or equal to the second flank angle.
또한, 바람직하게는, 상기 완료부의 외주면에는, 상기 제1 플랭크각이 상기 제2 플랭크각보다 작은 적어도 하나 이상의 비대칭 나사산이 구비되는 것을 특징으로 한다.In addition, preferably, at least one asymmetric screw thread having the first flank angle smaller than the second flank angle is provided on the outer circumferential surface of the completion part.
또한, 바람직하게는, 상기 비대칭 나사산 및 상기 다수 개의 체결나사산 중 상기 비대칭 나사산과 마주하는 최후단 체결나사산 중 적어도 하나 이상의 나사산은, 나사산과 상기 몸체부가 만나는 부분에서 제1 플랭크면 또는 제2 플랭크면보다 완만한 각도로 형성된 전이부를 구비하는 것을 특징으로 한다.Further, preferably, at least one or more threads of the last tightening screw thread facing the asymmetric thread among the asymmetric threads and the plurality of tightening threads are more than the first flank surface or the second flank surface at the portion where the thread and the body portion meet. Characterized in that the transition portion formed at a gentle angle.
본 발명의 체결력이 향상된 태핑나사는, 나사의 도입부에 형성된 절개나사산에 의해 태핑나사의 체결력이 향상되고, 체결부 및 완료부에 형성된 체결나사산이 절개나사산에 의해 체결 대상물의 내부에 형성된 암나사산을 너비 방향으로 확장하여 체결 면적이 증대되므로 태핑나사의 체결력을 더욱 향상시키고 체결 토크를 줄일 수 있다. The tapping screw with improved tightening force of the present invention is improved in the tightening force of the tapping screw by the incision screw thread formed in the inlet portion of the screw, and the tightening screw thread formed in the fastening portion and the completed portion is a female thread formed inside the fastening object by the incision thread. Expansion in the width direction increases the tightening area can further improve the tightening force of the tapping screw and reduce the tightening torque.
또한, 본 발명의 체결력이 향상된 태핑나사는 상대적으로 큰 너비를가지도록 형성된 체결나사산에 의해서 체결 대상물의 체결 면적이 증대됨에 따라 태핑나사가 체결 대상물로부터 풀리는 것을 방지할 수 있다. In addition, the tapping screw having improved fastening force of the present invention can be prevented from being released from the fastening object as the fastening area of the fastening object is increased by the fastening screw thread formed to have a relatively large width.
도 1은 본 발명의 일 실시예에 따른 체결력이 향상된 태핑나사를 나타낸 도면이다. 1 is a view showing a tapping screw with improved fastening force according to an embodiment of the present invention.
도 2는 도 1에 도시한 체결력이 향상된 태핑나사의 단면도이다. FIG. 2 is a cross-sectional view of a tapping screw having an improved fastening force shown in FIG. 1.
도 3은 도 2에 도시한 태핑나사의 형태를 설명하기 위한 도면이다. 3 is a view for explaining the shape of the tapping screw shown in FIG.
도 4는 도 2에 도시한 태핑나사의 피치를 설명하기 위한 도면이다. 4 is a view for explaining the pitch of the tapping screw shown in FIG.
도 5는 본 발명의 추가 실시예에 따른 태핑나사를 나타낸 도면이다. 5 is a view showing a tapping screw according to a further embodiment of the present invention.
도 6은 도 5에 도시한 태핑나사의 일부를 확대하여 나타낸 도면이다.FIG. 6 is an enlarged view of a part of the tapping screw illustrated in FIG. 5.
이하, 첨부된 도면을 참고로 하여 본 발명의 실시예들에 대하여 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 상세히 설명한다. 본 발명은 여러 가지 상이한 형태로 구현될 수 있으며 여기에서 설명하는 실시예들에 한정되지 않는다. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.
도면들은 개략적이고 축적에 맞게 도시되지 않았다는 것을 일러둔다. 도면에 있는 부분들의 상대적인 치수 및 비율은 도면에서의 명확성 및 편의를 위해 그 크기에 있어 과장되거나 감소되어 도시되었으며 임의의 치수는 단지 예시적인 것이지 한정적인 것은 아니다. 그리고 둘 이상의 도면에 나타나는 동일한 구조물, 요소 또는 부품에는 동일한 참조 부호가 유사한 특징을 나타내기 위해 사용된다. It is noted that the figures are schematic and not drawn to scale. The relative dimensions and ratios of the parts in the figures have been exaggerated or reduced in size for clarity and convenience in the figures and any dimensions are merely exemplary and not limiting. And the same reference numerals are used to refer to similar features in the same structure, element or part shown in more than one figure.
본 발명의 실시예는 본 발명의 이상적인 실시예들을 구체적으로 나타낸다. 그 결과, 도면의 다양한 변형이 예상된다. 따라서 실시예는 도시한 영역의 특정 형태에 국한되지 않으며, 예를 들면 제조에 의한 형태의 변형도 포함한다.Embodiments of the present invention specifically illustrate ideal embodiments of the present invention. As a result, various modifications of the drawings are expected. Thus, the embodiment is not limited to the specific form of the illustrated region, but includes, for example, modification of the form by manufacture.
이하, 첨부된 도면을 참조하여 본 발명의 일 실시예에 따른 체결력이 향상된 태핑나사(100, 이하 '태핑나사'라 함)을 설명한다. Hereinafter, with reference to the accompanying drawings will be described a tapping screw (100, hereinafter referred to as "tapping screw") is improved fastening force according to an embodiment of the present invention.
도 1은 본 발명의 일 실시예에 따른 체결력이 향상된 태핑나사를 나타낸 도면, 도 2는 도 1에 도시한 체결력이 향상된 태핑나사의 단면도, 도 3은 도 2에 도시한 태핑나사의 형태를 설명하기 위한 도면 및 도 4는 도 2에 도시한 태핑나사의 피치를 설명하기 위한 도면이다. 1 is a view showing a tapping screw with improved tightening force according to an embodiment of the present invention, Figure 2 is a cross-sectional view of the tapping screw with improved tightening force shown in Figure 1, Figure 3 illustrates the shape of the tapping screw shown in Figure 2 4 and 4 are views for explaining the pitch of the tapping screw shown in FIG. 2.
도 1 내지 도 4에 도시한 바와 같이, 본 발명의 일 실시예에 따른 태핑나사(100)는, 머리부(110) 및 머리부(110)와 연결되며 외주면에 복수 개의 나사산(130)이 마련되는 몸체부(120)를 포함할 수 있다. 1 to 4, the tapping screw 100 according to the embodiment of the present invention is connected to the head 110 and the head 110 and a plurality of threads 130 are provided on the outer circumferential surface thereof. It may include a body portion 120 to be.
도 1 내지 도 4를 참조하면, 머리부(110)는 몸체부(120)와 연결되는 부분이다. 머리부(110)의 일단부는 몸체부(120)가 연결되고, 타단부에는 체결부(미도시)가 형성될 수 있다. 여기서, 머리부(110)의 타단부에 형성된 체결부(미도시)는 태핑나사(100)를 체결 대상물(미도시)에 체결하기 위한 공구 등이 끼워질 수 있는 부분으로서, 공구가 삽입될 수 있도록 홈 또는 그루브의 형태로 마련되는 것이 바람직하다. 또한, 머리부(110)의 체결부(미도시)에 끼워진 공구에 의해 몸체부(120)가 체결 대상물(미도시)의 내부에 완전히 삽입되면 머리부(110)의 일단부는 체결 대상물(미도시)과 완전히 접촉될 수 있다. 1 to 4, the head 110 is a portion connected to the body 120. One end of the head 110 may be connected to the body portion 120, the other end may be a fastening portion (not shown). Here, a fastening part (not shown) formed at the other end of the head 110 is a part into which a tool for fastening the tapping screw 100 to a fastening object (not shown) may be inserted, and a tool may be inserted therein. It is preferable to be provided in the form of a groove or groove so that. In addition, when the body 120 is completely inserted into the fastening object (not shown) by a tool inserted into the fastening part (not shown) of the head 110, one end of the head 110 is fastened to the fastening object (not shown). ) Can be in full contact.
한편, 도면에는 머리부(110)의 형태를 원기둥의 형태로 도시하였지만, 반드시 이에 한정되는 것은 아니며, 사각형, 육각형 등 다양한 형태로 형성될 수 있다. Meanwhile, although the shape of the head 110 is illustrated in the form of a cylinder in the drawing, the shape of the head 110 is not necessarily limited thereto, and may be formed in various shapes such as a rectangle and a hexagon.
또한, 몸체부(120)는 일단부가 머리부(110)와 연결되며, 몸체부(120)의 외주면에는 복수 개의 나사산(130)이 마련될 수 있다. 구체적으로, 몸체부(120)는 머리부(110)의 폭보다 좁고 길이방향으로 긴 길이를 가지는 원기둥 형태로 형성될 수 있다. 이때, 원기둥 형태를 가지는 몸체부(120)의 외주면에는 복수 개의 나사산(130)이 마련될 수 있다. In addition, one end of the body 120 may be connected to the head 110, and a plurality of threads 130 may be provided on an outer circumferential surface of the body 120. Specifically, the body portion 120 may be formed in a cylindrical shape having a length narrower than the width of the head 110 and the longitudinal direction. In this case, a plurality of threads 130 may be provided on the outer circumferential surface of the body 120 having a cylindrical shape.
상기 복수 개의 나사산은 상기 몸체부의 길이방향 전체에서 또는 상기 몸체부의 길이방향의 적어도 일정 구간 이상에서 다수 개의 체결나사산을 포함한다.The plurality of threads includes a plurality of fastening screws in the entire longitudinal direction of the body portion or at least a predetermined section in the longitudinal direction of the body portion.
참고로, 상기한 바와 같이, 몸체부(120)는 머리부(110)에 끼워지는 공구 등에 의해 체결 대상물(미도시)에 삽입되는데, 이때 몸체부(120)의 타단부가 체결 대상물(미도시)을 뚫고 들어갈 수 있도록 원추형 모양으로 형성될 수 있다. For reference, as described above, the body portion 120 is inserted into a fastening object (not shown) by a tool fitted to the head 110, and at this time, the other end of the body portion 120 is fastening object (not shown). It can be formed into a conical shape so as to penetrate).
또한, 도 2에 도시한 바와 같이, 복수 개의 나사산(130)이 마련되는 몸체부(120) 및 몸체부(120)에 마련되는 나사산(130)은 태핑나사(100)가 체결 대상물(미도시)을 향해 체결되는 순서 또는 수행하는 역할 또는 태핑나사(100)의 체결 대상물(미도시)에 체결방향(도 2의 F 참조)을 따라 도입부(122), 체결부(124) 및 완료부(126)로 구분할 수 있다. 여기서, 체결방향(도 2의 F 참조)이란 상기 몸체부(120)의 타단부(즉, 머리부(110)가 구비되는 부분의 반대쪽 단부)에서부터 상기 몸체부(120)의 일단부(즉, 머리부(110)가 구비되는 부분)를 향하는 방향을 의미한다.In addition, as shown in Figure 2, the body portion 120 is provided with a plurality of threads 130 and the thread 130 is provided on the body portion 120, the tapping screw 100 is a fastening object (not shown) Introducing part 122, fastening part 124 and the completion part 126 along the fastening direction (see FIG. Can be divided into Here, the fastening direction (see F in FIG. 2) means one end of the body portion 120 from the other end of the body portion 120 (that is, the opposite end of the portion in which the head portion 110 is provided). Means the direction toward the head 110 is provided).
즉, 간략히 말하면, 몸체부(120)는 체결 대상물(미도시)과 최초로 접하게 되는 끝단부(즉, 타단부)에서부터 머리부(110)까지 차례대로 도입부(122), 체결부(124) 및 완료부(126)로 마련될 수 있다. 여기서, 상기 체결부 또는 상기 체결부 및 상기 완료부에는, 상기 다수 개의 체결나사산이 구비될 수 있다.That is, in brief, the body portion 120 is the introduction portion 122, the fastening portion 124 and the completion from the end (that is, the other end) to the head 110 in the first contact with the fastening object (not shown) in order It may be provided as a part 126. Here, the fastening portion or the fastening portion and the completion portion, the plurality of fastening screw thread may be provided.
구체적으로, 도입부(122)는 몸체부(120)가 체결 대상물(미도시)에 진입을 시작하는 부분으로서, 나사산(130)과 체결 대상물(미도시)이 최초로 나사 결합하는 부분이며, 체결 대상물(미도시)의 내부에 나사산(130)에 대응하는 암나사산을 형성하는 부분이다. 이때, 도입부(122)에는 플랭크면(131)의 단면이 직선형태로 형성되는 절개나사산(132)이 마련될 수 있다. Specifically, the introduction portion 122 is a portion in which the body 120 starts to enter the fastening object (not shown), and the thread 130 and the fastening object (not shown) are first screwed together, and the fastening object ( It is a portion that forms a female thread corresponding to the screw thread 130 in the inside of the (not shown). In this case, the introduction portion 122 may be provided with a cutting screw thread 132 having a cross section of the flank surface 131 formed in a straight line shape.
이러한 절개나사산(132)은 도입부(122)에 적어도 하나 이상으로 형성될 수 있고, 필요에 따라 도입부(122)와 체결부(124)에 걸쳐 마련될 수 있다. 상기 절개나사산(132)은 상기 체결나사산(134)의 높이(L2)보다 큰 높이(L1) 및 상기 체결나사산(134)의 너비(W2)(W3)(W4)(W5)보다 작은 너비(W1)를 가지도록 형성된다. 즉, 도입부(122)에 마련된 절개나사산(132)에 의해 체결 대상물(미도시)의 내부를 절개나사산(132)의 높이 방향으로 절개하면서 태핑나사(100)를 태핑체결할 수 있다. 절개나사산(132)이 체결 대상물(미도시)의 내부를 높이 방향으로 절개하면서 태핑 체결하기 때문에 절개나사산(132)에 의해서 체결 대상물(미도시)과 태핑나사(100)의 파워록(power-lock)이 가능해진다. The cutting thread 132 may be formed in at least one or more in the introduction portion 122, it may be provided over the introduction portion 122 and the fastening portion 124 as necessary. The cutting thread 132 has a height L1 larger than the height L2 of the fastening screw thread 134 and a width W1 smaller than the width W2, W3, W4, W5 of the fastening screw thread 134. It is formed to have). That is, the tapping screw 100 may be tapped by cutting the inside of the fastening object (not shown) in the height direction of the cutting screw thread 132 by the cutting screw thread 132 provided in the introduction part 122. Since the incision screw thread 132 makes the tapping fastening while cutting the inside of the fastening object (not shown) in the height direction, the power lock of the fastening object (not shown) and the tapping screw 100 by the incision screw thread 132. ) Is possible.
한편, 체결부(124)는 몸체부(120)가 도입부(122)에 의해 체결 대상물(미도시)에 진입한 후에 도입부(122)에 이어서 나사산(130)이 체결 대상물(미도시)과 체결되는 부분이고, 완료부(126)는 나사산(130)이 체결 대상물(미도시)과 체결이 완료되는 부분이다. On the other hand, the fastening part 124 is the body portion 120 enters the fastening object (not shown) by the introduction portion 122, the threaded portion 130 is fastened to the fastening object (not shown) after the introduction portion 122. The completion portion 126 is a portion where the thread 130 is fastened with the fastening object (not shown).
이때, 체결부(124) 및 완료부(126)는 도입부(122)의 절개나사산(132)에 의해 체결 대상물(미도시)의 내부에 형성된 암나사산을 통해 체결 대상물(미도시)과 체결될 수 있다. At this time, the fastening part 124 and the completion part 126 may be fastened with the fastening object (not shown) through the female thread formed inside the fastening object (not shown) by the cutting thread 132 of the introduction part 122. have.
도면에 도시된 바와 같이, 체결부(124) 및 완료부(126)에 형성되는 체결나사산(134)은 도입부(122)에 형성된 절개나사산(132)과 마찬가지로 플랭크면(133)의 단면 모양이 직선으로 형성되는 것이 바람직하다. As shown in the figure, the fastening screw thread 134 formed in the fastening portion 124 and the completion portion 126 has a straight cross-sectional shape of the flank surface 133 similarly to the cutting thread thread 132 formed in the inlet portion 122. It is preferable to form.
구체적으로, 도 4에 도시된 바와 같이, 상기 체결나사산(134)은 상기 몸체부(120)의 타단부 쪽을 향하는(즉, 도 2의 체결 방향(F2)을 향하는) 플랭크면인 제1 플랭크면(133a)과, 상기 몸체부(120)의 일단부 쪽을 향하는(즉, 도 2의 체결 방향(F2)의 반대 방향을 향하는) 플랭크면인 제2 플랭크면(133b)과, 상기 제1 플랭크면(133a)과 상기 제2 플랭크면(133b)이 형성하는 플랭크각(즉, 체결나사산의 산 부분의 각도)과, 상기 제1 플랭크면(133a)과 상기 몸체부(120)의 축선 또는 축선방향(A)이 형성하는 제1 플랭크 측면 각도(δ)와, 상기 제2 플랭크면(133b)과 상기 몸체부(120)의 축선 또는 축선 방향(A)이 형성하는 제2 플랭크 측면 각도(θ)를 포함한다.Specifically, as shown in FIG. 4, the fastening screw thread 134 is a first flank which is a flank surface facing toward the other end of the body portion 120 (that is, toward the fastening direction F2 of FIG. 2). Surface 133a, a second flank surface 133b which is a flank surface facing one end of the body portion 120 (that is, facing the direction opposite to the fastening direction F2 of FIG. 2), and the first The flank angle formed by the flank surface 133a and the second flank surface 133b (i.e., the angle of the mountain portion of the fastening screw thread), the axis of the first flank surface 133a and the body portion 120, or First flank lateral angle δ formed in the axial direction A, and second flank lateral angle formed by the axial or axial direction A of the second flank 133b and the body portion 120. θ).
다만, 경우에 따라서는, 체결부(124) 및 완료부(126)에 형성된 체결나사산(134)은 도입부(122)에 형성된 절개나사산(132)과 달리 플랭크면(133)의 단면 모양이 곡선으로 형성되는 체결나사산(134)이 마련될 수도 있다. 다시 말해서, 체결나사산(134)의 플랭크면(133)의 단면 모양이 완전한 직선으로 형성되는 대신 나사산의 산 부분에는 미세한 곡선 또는 곡면이 형성될 수도 있다. However, in some cases, the fastening screw thread 134 formed in the fastening part 124 and the completion part 126 has a curved cross-sectional shape of the flank surface 133 unlike the cutting thread thread 132 formed in the inlet part 122. A fastening screw thread 134 to be formed may be provided. In other words, instead of forming the cross-sectional shape of the flank surface 133 of the fastening screw thread 134 in a perfect straight line, a fine curve or curved surface may be formed in the peak portion of the thread.
체결나사산(134)의 플랭크면(133)의 단면이 곡선 형태를 가지는 경우에, 체결 대상물(미도시)의 종류에 따라 그 곡률이 달라질 수 있다. 즉, 체결나사산(134)의 플랭크면(133)은 소정의 곡률을 가지며, 체결나사산(134)의 플랭크면(133)의 곡률이 커지면 커질수록 체결 대상물(미도시)과 체결나사산(134) 간의 마찰력이 커지게 되고, 그에 따라 태핑나사(100)가 체결 대상물(미도시)에 대해 체결력이 향상될 수 있다. 그러나, 체결나사산(134)의 플랭크면(133)의 곡률을 너무 크게 하여 완만한 곡선을 가지는 형태로 형성할 경우에는 태핑나사(100)의 길이방향 길이가 길어지거나, 태핑나사(100) 상에 나사산(130)의 개수가 너무 적어지게 되므로 체결나사산(134)의 플랭크면(133)의 곡률은 필요한 체결력을 고려하여 결정되는 것이 바람직하다. When the cross section of the flank surface 133 of the fastening screw thread 134 has a curved shape, its curvature may vary depending on the type of fastening object (not shown). That is, the flank surface 133 of the fastening screw thread 134 has a predetermined curvature, and as the curvature of the flank surface 133 of the fastening screw thread 134 increases, the fastening object (not shown) and the fastening screw thread 134 become larger. The frictional force is increased, and accordingly, the tapping screw 100 may improve the fastening force with respect to the fastening object (not shown). However, when the curvature of the flank surface 133 of the fastening screw thread 134 is too large to form a smooth curve, the longitudinal length of the tapping screw 100 becomes long or on the tapping screw 100. Since the number of threads 130 becomes too small, the curvature of the flanks 133 of the fastening screw thread 134 is preferably determined in consideration of the required fastening force.
여기서, 체결부(124) 및 완료부(126)에 형성되는 체결나사산(134)의 형태가 도입부(122)에 형성되는 절개나사산(132)의 형태와 달리 플랭크면(133)의 단면 모양이 곡선을 가지는 이유는 도입부(122)에 형성된 절개나사산(132)이 수행하는 역할과 체결부(124) 및 완료부(126)에 형성되는 복수 개의 체결나사산(134)이 수행하는 역할이 다르기 때문이다. 즉, 도입부(122)에 형성되는 절개나사산(132)은 체결 대상물(미도시)의 내부를 높이(L) 방향으로 절개하면서 태핑 체결하는 역할을 하고, 체결부(124) 및 완료부(126)에 형성된 체결나사산(134)은 절개나사산(132)에 의해 절개된 체결 대상물(미도시)의 내부 즉, 절개나사산(132)에 의해 체결 대상물(미도시)의 내부에 형성된 암나사산을 나사산의 너비(W) 방향으로 더욱 확장하면서 태핑 체결하는 것이기 때문에 도입부(122)에 형성된 절개나사산(132)과 체결부(124) 및 완료부(126)에 형성된 체결나사산(134)의 형태는 다르게 형성될 수밖에 없는 것이다. Here, the cross-sectional shape of the flank surface 133 is curved, unlike the shape of the fastening screw thread 134 formed in the fastening portion 124 and the completion portion 126 is different from the shape of the incision screw thread 132 formed in the inlet portion 122. The reason for having is because the role of the cutting screw thread 132 formed in the introduction portion 122 and the plurality of fastening screw thread 134 formed in the fastening portion 124 and the completion portion 126 is different. That is, the incision screw thread 132 formed in the introduction part 122 serves to tap and fasten the inside of the fastening object (not shown) in the height L direction, and the fastening part 124 and the completion part 126. The fastening screw thread 134 formed at the inside of the fastening object (not shown) cut by the incision screw thread 132, that is, the width of the screw thread formed inside the fastening object (not shown) by the cutting thread 132. Since the tapping fastening is further extended in the (W) direction, the incision screw thread 132 formed in the inlet 122 and the fastening screw thread 134 formed in the fastening part 124 and the completion part 126 may be formed differently. It is not there.
다만, 요구되는 체결력 등에 따라서 체결나사산(134)의 플랭크면(133)의 단면 형태가 곡선이 아니라 직선의 단면 형태를 가지도록 형성될 수도 있다. 상기에서 설명한 바와 같이, 체결나사산(134)은 절개나사산(132)에 의해서 체결 대상물(미도시)에 형성된 암나나산을 나사산의 너비(W) 방향으로 더 확장하면서 체결력을 높이면 되기 때문에, 반드시 플랭크면(133)이 곡선의 단면 형태로 형성될 필요가 없다. 즉, 체결나사산(134)은 절개나사산(132) 보다 높이(L)는 작고 너비(W)가 큰 형태를 가진다면 플랭크면(133)의 형태는 곡선 또는 직선의 단면 형태로 형성되어도 무방하다. However, the cross-sectional shape of the flank surface 133 of the fastening screw thread 134 may be formed to have a straight cross-sectional shape instead of a curved line according to the required fastening force. As described above, the fastening screw thread 134 is to increase the fastening force by further expanding the female thread formed on the fastening object (not shown) by the incision screw thread 132 in the width (W) direction of the screw thread, so that the flank must be Face 133 need not be formed in the shape of a curved cross section. That is, the fastening screw thread 134 may be formed in a curved or straight cross-sectional shape if the height L is smaller than the cutting thread thread 132 and the width W is larger.
도 2 내지 도 4를 참조하여, 도입부(122)에 형성된 절개나사산(132)과 체결부(124) 및 완료부(126)에 형성된 체결나사산(134)에 대하여 구체적으로 설명한다. 2 to 4, the cutting thread 132 formed on the inlet 122, the fastening screw 134 formed on the fastening part 124, and the completion part 126 will be described in detail.
도입부(122)에 형성되는 절개나사산(132)의 높이(L1)는 체결부(124)와 완료부(126)에 형성되는 체결나사산(134)의 높이(L2)보다 크게 형성될 수 있다. 도 3에 도시한 바와 같이, 절개나사산(132)의 높이(L1)는 체결나사산(134)의 높이(L2)보다 약 2배 정도의 크기로 마련될 수 있으며, 절개나사산(132)의 높이는 체결 대상물(미도시)에 필요한 체결력에 따라 달라질 수 있다. 이때, 체결부(124) 및 완료부(126) 전체에 형성되는 체결나사산(134)들의 높이(L2)는 모두 동일한 높이로 형성되는 것이 바람직하다. 왜냐하면, 체결나사산(134)은 절개나사산(132)에 의해 체결 대상물(미도시)의 내부에 이미 형성된 암나사산을 체결나사산(134)의 너비(W2)(W3) 방향으로 더욱 확장하기만 하면 되기 때문에, 굳이 복수 개의 체결나사산(134)들의 높이를 다르게 형성할 필요가 없는 것이다. 그러나, 반드시 이에 한정되는 것이 아니며, 체결나사산(134)들의 높이는 태핑나사(100)가 체결되는 대상인 체결 대상물(미도시)에 요구되는 체결력에 따라 달라질 수 있다. The height L1 of the cutting thread 132 formed in the inlet 122 may be greater than the height L2 of the fastening screw 134 formed in the fastening part 124 and the completion part 126. As shown in FIG. 3, the height L1 of the incision screw thread 132 may be provided about twice as large as the height L2 of the fastening screw thread 134, and the height of the incision screw thread 132 is fastened. It may vary depending on the fastening force required for the object (not shown). At this time, it is preferable that the heights L2 of the fastening screw threads 134 formed on the fastening part 124 and the completion part 126 are all formed at the same height. This is because the fastening screw thread 134 only needs to further expand the female screw thread already formed inside the fastening object (not shown) by the incision screw thread 132 in the width W2 (W3) direction of the fastening screw thread 134. Therefore, it is not necessary to form different height of the plurality of fastening screw thread 134. However, the present invention is not limited thereto, and the height of the fastening screw threads 134 may vary depending on a fastening force required for a fastening object (not shown), to which the tapping screw 100 is fastened.
또한, 절개나사산(132)의 너비(W)는 체결나사산(134)의 너비(W2)(W3)보다 작게 형성될 수 있다. 상기한 바와 같이, 절개나사산(132)은 태핑나사(100)의 도입부(122)에서 체결 대상물(미도시)의 내부를 높이 방향으로 절개하여 암나사산을 형성하는 것이기 때문에, 굳이 절개나사산(132)의 너비(W1)를 크게 할 필요가 없다. 그러나, 체결나사산(134)의 너비(W2)(W3)는 적어도 절개나사산(132)의 너비(W1)와 같게 형성되거나 크게 형성되는 것이 바람직하다. 왜냐하면, 체결나사산(134)은 절개나사산(132)에 의해 절개된 체결 대상물(미도시)의 내부를 체결나사산(134)의 너비(W2)(W3) 방향으로 확장하는 것이기 때문에, 체결나사산(134)의 너비(W2)(W3)를 크게 하여 체결 대상물(미도시)과의 체결 면적을 향상시킴으로써 태핑나사(100)의 체결력을 향상시킬 수 있다. In addition, the width W of the incision screw thread 132 may be smaller than the width W2 and W3 of the fastening screw thread 134. As described above, because the incision screw thread 132 cuts the inside of the fastening object (not shown) in the height direction from the inlet portion 122 of the tapping screw 100 to form a female screw thread, the incision screw thread 132 is dared. It is not necessary to increase the width W1 of. However, the width W2 and W3 of the fastening screw thread 134 is preferably formed at least equal to or wider than the width W1 of the cutting thread thread 132. This is because the fastening screw thread 134 extends the inside of the fastening object (not shown) cut by the cutting screw thread 132 in the direction of the width W2 (W3) of the fastening screw thread 134. By increasing the width (W2) (W3) of the () to improve the fastening area with the fastening target (not shown) it is possible to improve the fastening force of the tapping screw 100.
한편, 도 4에 도시한 바와 같이, 본 발명의 일 실시예에 따른 절개나사산(132) 및 체결나사산(134)들 또는 상기 다수 개의 체결나사산(134a)(134b)(134c)(134d)은 태핑나사(100)의 체결방향(도 2의 F 참조)과 반대방향으로 향할수록(즉, 상기 몸체부(120)의 타단부에서 상기 몸체부(120)의 일단부로 갈수록) 너비(W1~W5)가 커지도록 형성될 수 있다. 다시 말해서, 도입부(122)에 형성된 절개나사산(132)의 너비(W1)와 체결부(124) 및 완료부(126)에 형성된 복수 개의 체결나사산(134)의 너비(W2~W5)는 체결부(124)에서 완료부(126)로 갈수록 점점 증가되도록 형성될 수 있다. On the other hand, as shown in Figure 4, the incision screw thread 132 and the fastening screw thread 134 or the plurality of fastening screw threads (134a) (134b) (134c) (134d) in accordance with an embodiment of the present invention tapping Width (W1 ~ W5) toward the opposite direction of the fastening direction of the screw 100 (see F in Fig. 2) (that is, toward the other end of the body portion 120 from the other end of the body portion 120) May be formed to be large. In other words, the width W1 of the cut thread 132 formed in the inlet 122 and the width W2 to W5 of the plurality of fastening screw threads 134 formed in the fastening part 124 and the completion part 126 are fastening parts. It may be formed to gradually increase from 124 to the completion unit 126.
도 4에 도시된 나사산(130)의 체결 작용을 설명해 보면, 절개나사산(132)이 체결 대상물이 최초로 진입하여 절개나사산(132) 모양과 동일한 암나사산을 체결 대상물에 형성하게 된다. 이때, 절개나사산(132)은 체결 대상물의 내부를 절개나사산(132)의 높이 방향으로 절개하면서 태핑 체결된다. 이어서, 절개나사산(132)의 뒤쪽에 위치하는 제1체결나사산(134a)이 절개나사산(132)에 의해 형성된 암나사산에 진입하게 되는데, 제1체결나사산(134a)의 너비(W2)가 절개나사산(132)의 너비(W1) 보다 크기 때문에 제1체결나사산(134a)이 절개나사산(132)에 의해서 형성된 암나사산을 너비 방향으로 확장하면서 체결 대상물에 태핑 체결된다. 이어서, 제2체결나사산(134b)이 제1체결나사산(134a)에 의해서 너비 방향으로 확장된 암나사산에 진입하게 되는데, 제2체결나사산(134b)의 너비(W3)가 제1체결나사산(134a)의 너비(W2) 보다 크기 때문에 제2체결나사산(134b)이 제1체결나사산(134a)에 의해서 형성된 암나사산을 너비 방향으로 확장하면서 체결 대상물에 태핑 체결된다. 이어서 제3체결나사산(134c) 및 제4체결나사산(134d)이 순차적으로 너비 방향으로 확장하면 체결 대상물에 태핑 체결된다.Referring to the fastening action of the screw thread 130 shown in Figure 4, the incision screw thread 132 enters the fastening object for the first time to form a female screw thread identical to the shape of the incision screw thread 132 on the fastening object. At this time, the incision screw thread 132 is tapped and fastened while cutting the inside of the fastening object in the height direction of the incision screw thread 132. Subsequently, the first tightening screw thread 134a positioned at the rear of the cutting screw thread 132 enters the female screw thread formed by the cut screw thread 132, and the width W2 of the first tightening screw thread 134a is the cut screw thread. Since it is larger than the width W1 of 132, the first fastening screw thread 134a is fastened to the fastening object while extending the female thread thread formed by the cut screw thread 132 in the width direction. Subsequently, the second fastening screw thread 134b enters the female screw thread extended in the width direction by the first fastening screw thread 134a. The width W3 of the second fastening screw thread 134b is the first fastening screw thread 134a. Since the width W2 is greater than the width W2, the second tightening screw thread 134b is fastened to the fastening object while the female screw thread formed by the first screw thread 134a extends in the width direction. Subsequently, when the third fastening screw thread 134c and the fourth fastening screw thread 134d sequentially expand in the width direction, the third fastening screw thread 134c and the fourth fastening screw thread 134d are fastened to the fastening object.
이와 같이, 도입부(122)에서부터 완료부(126)로 갈수록 체결나사산(134)의 너비(W2~W5)를 점차 크게 함으로써 체결나사산(134)과 체결 대상물 사이의 체결력을 한층 더 높일 수 있다.In this way, by increasing the width (W2 ~ W5) of the fastening screw thread 134 gradually from the introduction portion 122 to the completion portion 126, the fastening force between the fastening screw thread 134 and the fastening object can be further increased.
또한, 도 4에서 예시적으로 도시한 바와 같이, 상기 다수 개의 체결나사산(134a)(134b)(134c)(134d) 각각은, 상기 체결나사산(134)의 제1 플랭크 측면 각도(δ)가 상기 몸체부(120)의 타단부에서 상기 몸체부(120)의 일단부로 갈수록 감소되도록 형성되고, 동시에 상기 다수 개의 체결나사산(134a)(134b)(134c)(134d) 각각은, 상기 체결나사산(134)의 제2 플랭크 측면 각도(θ)가 상기 몸체부(120)의 타단부에서 상기 몸체부의 일단부까지 동일하도록 형성된다.4, each of the plurality of fastening screws 134a, 134b, 134c, and 134d has a first flank side angle δ of the fastening screw thread 134. It is formed to decrease toward the other end of the body portion 120 from the other end of the body portion 120, and at the same time each of the plurality of fastening screw threads 134a, 134b, 134c, 134d, the fastening screw thread 134 The second flank side angle θ of) is formed to be the same from the other end of the body portion 120 to one end of the body portion.
즉, 상기 다수 개의 체결나사산의 제1 플랭크 측면 각도(δ)는 도 4를 참고하여 δ1 > δ2 > δ3 > δ4 > ... > δn 되도록 형성되고, 상기 다수 개의 체결나사산의 제1 플랭크 측면 각도(θ)는 도 4를 참고하여 θ1 = θ2 = θ3 = θ4 = ... = θn 되도록 형성된다. That is, the first flank side angle δ of the plurality of fastening screws is formed such that δ1>δ2>δ3>δ4>...> δ n with reference to FIG. 4, and the first flank side of the plurality of fastening threads. The angle θ is formed such that θ1 = θ2 = θ3 = θ4 = ... = θ n with reference to FIG. 4.
도 4에 도시된 바와 같이, 상기 다수 개의 체결나사산의 제1 플랭크 측면 각도(δ)는 상기 다수 개의 체결나사산이 각각 연속적으로 δ1 > δ2 > δ3 > δ4 > ... > δn 되도록 형성될 수 있으나, 추가 실시예에 따르면 상기 다수 개의 체결나사산은 연속되는 구간 별로 제1 플랭크 측면 각도(δ)가 δ1 > δ2 > δ3 > δ4 > ... > δn 되도록 형성될 수도 있다.4, the first side flank angle (δ) of the plurality of coupling threads are the threads of the multiple fastening each successively δ1>δ2>δ3>δ4>...> can be formed such that δ n However, according to a further embodiment, the plurality of fastening screws may be formed such that the first flank lateral angle δ is δ1>δ2>δ3>δ4>...> δ n for each consecutive section.
상기 체결나사산의 제1 플랭크 측면 각도 및 제2 플랭크 측면 각도를 위와 같이 형성함으로써, 제1 플랭크 측면 각도의 점진적 증가로 인해 상기 다수 개의 체결나사산은 너비가 상기 몸체부의 타단부에서 상기 몸체부의 일단부로 갈수록 증가되도록 구성될 수 있어 상기 태핑나사와 체결 대상물 사이의 체결력을 현저히 증가시킬 수 있을 뿐만 아니라, 제2 플랭크 측면 각도들이 동일함으로 인해 제2 플랭크면이 체결 대상물에 형성되는 암나사산의 제2 플랭크면이 항상 일정한 각도로 형성되므로 암나사산의 제2 플랭크면에 상기 체결 나사산의 제2 플랭크면이 항상 밀착상태를 유지할 수 있으므로 태핑나사가 체결 대상물에 체결 된 후에 풀림 방지 면적을 증가시킬 수 있어 풀림 방지효과를 현저히 향상시킬 수 있다. By forming the first flank side angle and the second flank side angle of the fastening screw thread as above, the plurality of fastening screw threads have a width from one end of the body portion to the other end of the body portion due to the gradual increase of the first flank side angle. It can be configured to increase gradually to not only significantly increase the tightening force between the tapping screw and the fastening object, but also because the second flank side angles are the same, the second flank of the female thread that the second flank surface is formed on the fastening object Since the surface is always formed at a constant angle, the second flank surface of the fastening thread can always be in close contact with the second flank surface of the female thread, so that the anti-loosening area can be increased after the tapping screw is fastened to the fastening object. The prevention effect can be significantly improved.
한편, 본 발명의 일 실시예에 따른 절개나사산(132) 및 체결나사산(134)간의 피치(P)는 태핑나사(100)의 체결방향(F)과 반대방향으로 향할수록 커질 수 있다. On the other hand, the pitch (P) between the cutting screw thread 132 and the fastening screw thread 134 according to an embodiment of the present invention may be larger toward the opposite direction to the fastening direction (F) of the tapping screw 100.
여기서 피치(P)는 태핑나사(100)의 나사산(130) 중 서로 인접한 나사산(130) 사이의 거리이다. 즉, 피치(P)는 태핑나사(100)의 절개나사산(132)과 인접한 체결나사산(134) 사이의 거리 또는 체결나사산(134)과 인접한 다른 체결나사산(134) 사이의 거리일 수 있다. 이와 같은 절개나사산(132)과 인접한 체결나사산(134)의 피치(P) 및 체결나사산(134)과 인접한 다른 체결나사산(134)의 피치(P)는 도입부(122)에서 체결부(124) 그리고, 완료부(126)로 갈수록 점점 증가되도록 형성될 수 있다. Here, the pitch P is a distance between the threads 130 adjacent to each other among the threads 130 of the tapping screw 100. That is, the pitch P may be a distance between the cutting thread 132 of the tapping screw 100 and the adjacent fastening screw thread 134 or the distance between the fastening screw thread 134 and another fastening screw thread 134. The pitch P of the fastening screw thread 134 adjacent to the incision screw thread 132 and the pitch P of the other fastening screw thread 134 adjacent to the screw thread 134 are fastened to the fastening part 124 at the inlet 122. , To be gradually increased toward the completion unit 126.
예를 들어, 도 4에 도시한 바와 같이, 도입부(122)의 절개나사산(132)과 인접한 체결나사산(134) 사이의 피치(P)를 P1 라 하고, 체결나사산(134)과 인접한 다른 체결나사산(134) 사이의 피치(P)를 P2, 그 다음 체결나사산(134)과 인접한 다른 체결나사산(134) 사이의 피치(P)를 P3 및 P4라 할 경우, 절개나사산(132)과 체결나사산(134) 사이의 피치(P)의 크기의 순서는 'P1<P2<P3<P4' 라 할 수 있다. For example, as shown in FIG. 4, the pitch P between the incision thread 132 of the inlet 122 and the adjacent fastening screw thread 134 is denoted by P1, and another fastening screw thread adjacent to the fastening screw thread 134. When the pitch P between 134 is P2, and then the pitch P between the next tightening screw thread 134 and another fastening screw thread 134 adjacent is P3 and P4, the cut thread 132 and the fastening screw thread ( The order of the magnitudes of the pitches P between 134) may be referred to as 'P1 <P2 <P3 <P4'.
도 4에 도시된 바와 같이, 체결나사산(134)이 절개나사산(132) 보다 작은 높이를 가지되 절개나사산(132) 보다 큰 너비를 가지기 때문에, 체결 대상물에 절개나사산(132)에 의해 형성된 암나사산을 체결나사산(134)이 너비 방향을 더욱 확장하면서 체결되어 체결나사산(134)과 체결 대상물 사이의 체결력을 높일 수 있다. 또한, 도입부(122)에서부터 완료부(126)로 갈수록 체결나사산(134)의 너비를 점차 크게 함으로써 체결나사산(134)과 체결 대상물 사이의 체결력을 한층 더 높일 수 있다.As shown in FIG. 4, since the tightening screw thread 134 has a height smaller than the cutting screw thread 132 but has a width larger than the cutting screw thread 132, a female thread thread formed by the cutting screw thread 132 in the fastening object. The fastening screw thread 134 is fastened while extending the width direction to increase the fastening force between the fastening screw thread 134 and the fastening object. In addition, by gradually increasing the width of the fastening screw thread 134 from the introduction portion 122 to the completion part 126, the fastening force between the fastening screw thread 134 and the fastening object can be further increased.
상기한 구성에 의하여, 본 발명에 따른 체결력이 향상된 태핑나사(100)는, 나사의 도입부에 형성된 절개나사산에 의해 태핑나사의 체결력이 향상되고, 체결부 및 완료부에 형성된 체결나사산이 절개나사산에 의해 체결 대상물의 내부에 형성된 암나사산을 너비 방향으로 확장하여 체결 면적이 증대되므로 태핑나사의 체결력을 더욱 향상시키고 체결 토크를 줄일 수 있다. By the above-described configuration, the tapping screw 100 having improved tightening force according to the present invention is improved in the tightening force of the tapping screw by the incision screw thread formed at the inlet portion of the screw, and the tightening screw thread formed at the fastening portion and the completed portion is disposed on the incision thread. By expanding the female thread formed in the interior of the fastening object in the width direction by increasing the fastening area can further improve the fastening force of the tapping screw and reduce the fastening torque.
또한, 본 발명의 체결력이 향상된 태핑나사(100)는 상대적으로 큰 너비를가지도록 형성된 체결나사산에 의해서 체결 대상물의 체결 면적이 증대됨에 따라 태핑나사가 체결 대상물로부터 풀리는 것을 방지할 수 있다. In addition, the tapping screw 100 having improved fastening force of the present invention can prevent the tapping screw from being released from the fastening object as the fastening area of the fastening object is increased by the fastening screw thread formed to have a relatively large width.
도 5는 본 발명의 추가 실시예에 따른 태핑나사를 나타낸 도면이고, 도 6은 도 5에 도시한 태핑나사의 일부를 확대하여 나타낸 도면이다.5 is a view showing a tapping screw according to a further embodiment of the present invention, Figure 6 is an enlarged view showing a part of the tapping screw shown in FIG.
도 5 및 도 6을 참조하여, 본 발명의 추가 실시예에 따른 태핑나사(200)를 전술한 실시예와 상이한 점 또는 전술한 실시예를 기준으로 추가된 점을 중심으로 설명한다. 5 and 6, the tapping screw 200 according to a further embodiment of the present invention will be described with reference to points different from the above-described embodiment or added based on the above-described embodiment.
도 5 및 도 6을 참조하면, 본 실시예에 따른 태핑나사(200)는, 머리부(110)와, 일단부가 머리부(110)와 접촉되되 외주면에 복수 개의 나사산(130)이 마련되는 몸체부를 포함할 수 있다. 5 and 6, the tapping screw 200 according to the present exemplary embodiment includes a head 110 and a body in which one end portion is in contact with the head 110 but a plurality of threads 130 are provided on an outer circumferential surface thereof. It may include wealth.
본 실시예에 따른 풀림방지가 용이한 태핑나사(200)는, 머리부(110), 몸체부(120)를 제외하고, 전술한 실시예에 따른 태핑나사(100)의 구성과 실질적으로 동일하므로, 그 동일한 구성에 대해서는 동일한 도면부호를 부여하였으며, 그에 대한 설명은 전술한 실시예를 준용하기로 한다. Tapping screw 200 easy to prevent loosening according to the present embodiment, except for the head 110, the body portion 120, is substantially the same as the configuration of the tapping screw 100 according to the above-described embodiment For the same configuration, the same reference numerals are given, and the description thereof will apply mutatis mutandis to the above-described embodiments.
도 5 및 도 6에 도시한 몸체부(120)에는 복수 개의 나사산(230)이 마련될 수 있다. 이때, 복수 개의 나사산(230)은 대칭나사산(231)과, 제1 플랭크면(234)(234') 및 제2 플랭크면(235)(235')의 경사가 서로 다른 경사를 가지며 나사산(230)의 제1 플랭크각(α)(즉, 상기 몸체부의 타단부 쪽을 향하는 플랭크면인 제1 플랭크면과 상기 몸체부의 축선에 대한 수직선(L)이 형성하는 각도) 및 제2 플랭크각(β)(즉, 상기 몸체부의 일단부 쪽을 향하는 플랭크면인 제2 플랭크면과 상기 몸체부의 축선에 대한 수직선(L)이 형성하는 각도)이 서로 다르게 형성되거나 서로 다른 크기를 가지는 비대칭되는 형태를 가지는 비대칭나사산(233)(233')으로 마련될 수 있다. 다시 말해서, 몸체부(120)에 마련되는 복수 개의 나사산(230) 중에서, 서로 마주보는 나사산 중 어느 한 쌍의 나사산(230)은 비대칭나사산(233)(233')으로 형성될 수 있다. 바람직하게는, 비대칭나사산(233)(233')은 몸체부(120)의 체결부(124)와 완료부(126)에 걸쳐지는 위치 또는 상기 완료부의 위치에 마련되며, 마주보는 방향에 위치될 수 있다. 이에 따라, 태핑나사(200)가 체결 대상물(101)에 체결시, 마주보는 방향에 마련된 비대칭나사산(233)(233')이 체결 대상물(101)을 밀어내면서 체결될 수 있다. A plurality of threads 230 may be provided in the body 120 illustrated in FIGS. 5 and 6. In this case, the plurality of threads 230 are inclined from the symmetrical screw thread 231, the first flank surface 234, 234 'and the second flank surface 235, 235' has a different inclination and the screw thread 230 First flank angle α (ie, the angle formed by the first flank plane, which is the flank face toward the other end of the body portion, and a vertical line L with respect to the axis of the body portion), and the second flank angle β (Ie, the angle formed by the second flank plane, which is the flank plane facing toward one end of the body part, and the vertical line L with respect to the axis of the body part) is formed differently or has an asymmetrical shape having different sizes. It may be provided as an asymmetric screw thread 233 (233 '). In other words, of the plurality of threads 230 provided in the body 120, any one pair of threads 230 of the threads facing each other may be formed as an asymmetric screw thread 233, 233 ′. Preferably, the asymmetrical screw thread 233, 233 'is provided at a position spanning the fastening portion 124 and the completion portion 126 of the body portion 120 or the position of the completion portion, and to be located in the opposite direction Can be. Accordingly, when the tapping screw 200 is fastened to the fastening object 101, the asymmetrical screw threads 233 and 233 ′ provided in the facing direction may be fastened while pushing the fastening object 101.
여기서, 서로 마주보는 위치에 형성된 비대칭나사산(233)(233') 중 태핑나사(200)의 체결방향에 대해 상대적으로 후방에 위치한 비대칭나사산(233)은 태핑나사(200)의 진행방향을 향해서 기울어지도록 형성되고, 태핑나사(200)의 체결방향에 대해서 상대적으로 전방에 위치한 비대칭나사산(233')은 태핑나사(200)의 체결방향의 반대방향을 향해서 기울어지도록 형성될 수 있다. Here, among the asymmetrical screw threads 233 and 233 'formed at positions facing each other, the asymmetrical screw thread 233 located relatively to the fastening direction of the tapping screw 200 is inclined toward the direction of travel of the tapping screw 200. The asymmetrical screw thread 233 ′ which is formed to be positioned in a forward direction relative to the fastening direction of the tapping screw 200 may be inclined toward the opposite direction of the fastening direction of the tapping screw 200.
도 6의 (a)에 도시한 바와 같이, 태핑나사(200)의 진행방향에 대해 상대적으로 후방에 위치한 비대칭나사산(233)은 제1 플랭크면(234) 보다 제2 플랭크면(235)이 완만한 경사를 가지도록 형성될 수 있다. 이와 같이 형성됨에 따라 경사가 급한 제1 플랭크면(234)과 체결 대상물(101) 사이에 응력(σ)이 집중될 수 있다. 또한, 태핑나사(200)에 나사산(230)을 형성하기 위한 전조과정에서 비대칭나사산(233)이 파손되는 것을 방지하기 위해 급한 경사를 가지는 제1 플랭크면(234)의 하단과 몸체부(120)가 만나는 부분에 전이부(240)가 형성될 수 있다. As shown in (a) of FIG. 6, in the asymmetrical screw thread 233 located rearward with respect to the advancing direction of the tapping screw 200, the second flank surface 235 is slower than the first flank surface 234. It may be formed to have one slope. As formed in this way, a stress σ may be concentrated between the first flank 234 having a steep slope and the fastening object 101. In addition, in order to prevent the asymmetrical screw thread 233 from being broken during the rolling process for forming the thread 230 in the tapping screw 200, the lower end and the body portion 120 of the first flank surface 234 having a steep inclination. The transition part 240 may be formed at a portion where the cross section meets.
또한, 도 6의 (b)에 도시한 바와 같이, 태핑나사(200)의 체결방향에 대해 상대적으로 전방에 위치한 비대칭나사산(233')은 제1 플랭크면(234')이 제2 플랭크면(235') 보다 완만한 경사를 가지도록 형성될 수 있다. 이와 같이 형성됨에 따라 경사가 급한 제2 플랭크면(235')와 체결 대상물(101) 사이에 응력(σ)이 집중될 수 있다. 또한, 전조과정에서 비대칭나사산(233')이 파손되는 것을 방지하기 위해서 급한 경사를 가지는 제2 플랭크면(235')의 하단과 몸체부(20)가 만나는 부분에 전이부(240')가 형성될 수 있다. In addition, as shown in (b) of FIG. 6, the first flank 234 'has a second flank (asymmetrical screw thread 233' located relatively forward with respect to the fastening direction of the tapping screw 200). 235 ') may have a gentler slope. As formed in this way, a stress σ may be concentrated between the second flank 235 ′ having a steep slope and the fastening target 101. In addition, in order to prevent the asymmetric screw thread 233 'from being damaged during the rolling process, a transition part 240' is formed at a portion where the lower end of the second flank 235 'having a steep inclination and the body part 20 meet. Can be.
즉, 도 6의 (a) 및 (b)에 도시한 바와 같이, 서로 마주보는 비대칭나사산(233)(233')이 서로를 향해서 기울어지도록 나사산(230)이 형성됨에 따라 급한 경사를 가지는 플랭크면이 체결 대상물(101)에 가하는 응력(σ)이 서로 마주보는 방향으로 작용하기 때문에 태핑나사(200)가 체결 대상물(101)에서 풀리는 것을 보다 효과적으로 방지할 수 있다. That is, as shown in (a) and (b) of FIG. 6, a planar surface having a steep slope as the threads 230 are formed so that the asymmetrical screw threads 233, 233 'facing each other are inclined toward each other. Since the stress? Applied to the fastening object 101 acts in a direction facing each other, the tapping screw 200 can be more effectively prevented from being released from the fastening object 101.
상기한 구성에 의하여, 본 발명에 따른 풀림방지가 용이한 태핑나사(100)(200)는 태핑나사가 체결 대상물에 체결된 후, 나사산과 체결 대상물 사이에 작용하는 마찰력을 견고하게 유지시키면서도 외부 충격이나 진동에 의해 나사의 풀림 현상을 방지할 수 있다. By the above configuration, after the tapping screw 100, 200 is easy to prevent loosening according to the present invention, after the tapping screw is fastened to the fastening object, the external impact while maintaining a firm friction force acting between the screw thread and the fastening object Or loosening of the screw can be prevented by vibration.
또한, 본 발명의 풀림방지가 용이한 태핑나사(100)(200)는, 전이부가 형성됨으로 인해 나사산을 형성하는 전조 과정시 발생할 수 있는 불량률을 감소시킬 수 있다. In addition, the anti-loosening tapping screw (100, 200) of the present invention, it is possible to reduce the defective rate that may occur during the rolling process to form a thread due to the transition portion is formed.
이상과 같이 본 발명의 일 실시예에서는 구체적인 구성 요소 등과 같은 특정 사항들과 한정된 실시예 및 도면에 의해 설명되었으나 이는 본 발명의 보다 전반적인 이해를 돕기 위해서 제공된 것일 뿐, 본 발명은 상기의 실시예에 한정되는 것은 아니며, 본 발명이 속하는 분야에서 통상적인 지식을 가진 자라면 이러한 기재로부터 다양한 수정 및 변형이 가능하다. 따라서, 본 발명의 사상은 설명된 실시예에 국한되어 정해져서는 아니 되며, 후술하는 특허청구범위뿐 아니라 이 특허청구범위와 균등하거나 등가적 변형이 있는 모든 것들은 본 발명 사상의 범주에 속한다고 할 것이다. As described above, in one embodiment of the present invention has been described by the specific embodiments, such as specific components and limited embodiments and drawings, but this is provided to help a more general understanding of the present invention, the present invention in the above embodiment The present invention is not limited thereto, and various modifications and variations are possible to those skilled in the art. Therefore, the spirit of the present invention should not be limited to the described embodiments, and all of the equivalents and equivalents of the claims, as well as the following claims, will fall within the scope of the present invention. .

Claims (10)

  1. 머리부; 및 Head; And
    일단부가 상기 머리부와 연결되되, 외주면에 복수 개의 나사산이 마련되는 몸체부;를 포함하고,One end is connected to the head, the body portion is provided with a plurality of threads on the outer circumference;
    상기 복수 개의 나사산은 상기 몸체부의 길이방향 전체에서 또는 상기 몸체부의 길이방향의 적어도 일정 구간 이상에서 다수 개의 체결나사산을 포함하며, The plurality of threads include a plurality of fastening screw thread in the entire longitudinal direction of the body portion or at least a predetermined section or more in the longitudinal direction of the body portion,
    상기 다수 개의 체결나사산은, 상기 체결나사산의 너비가 상기 몸체부의 타단부에서 상기 몸체부의 일단부로 갈수록 증가되도록 형성되는 것을 특징으로 하는 체결력이 향상된 태핑나사. The plurality of fastening screw thread, the tightening force is improved tapping screw, characterized in that the width of the fastening screw thread is formed to increase from the other end of the body portion toward one end of the body portion.
  2. 제1항에 있어서,The method of claim 1,
    상기 체결나사산은, 상기 몸체부의 타단부 쪽을 향하는 플랭크면인 제1 플랭크면과, 상기 몸체부의 일단부 쪽을 향하는 플랭크면인 제2 플랭크면을 포함하고 The fastening screw thread includes a first flank surface that is a flank surface facing toward the other end of the body portion, and a second flank surface that is a flank surface facing toward one end of the body portion.
    상기 다수 개의 체결나사산 각각은, 상기 제1 플랭크면과 상기 몸체부의 축선이 형성하는 제1 플랭크 측면 각도가 상기 몸체부의 타단부에서 상기 몸체부의 일단부로 갈수록 감소되도록 그리고 상기 제2 플랭크면과 상기 몸체부의 축선이 형성하는 제2 플랭크 측면 각도가 상기 몸체부의 타단부에서 상기 몸체부의 일단부까지 동일하도록 형성되는 것을 특징으로 하는 체결력이 향상된 태핑나사. Each of the plurality of fastening screws has a first flank side angle formed by the axis of the first flank and the body portion to decrease from the other end of the body portion toward one end of the body portion and the second flank surface and the body. The tapping screw with improved fastening force, characterized in that the second flank side angle formed by the axis of the negative portion is formed to be the same from the other end of the body portion to one end of the body portion.
  3. 제1항에 있어서,The method of claim 1,
    상기 다수 개의 체결나사산은 모두 동일한 나사산 높이를 가지는 것을 특징으로 하는 체결력이 향상된 태핑나사.The plurality of fastening screw thread is improved tapping screw, characterized in that all have the same thread height.
  4. 제1항에 있어서, The method of claim 1,
    상기 몸체부는 상기 몸체부의 타단부에서부터 상기 몸체부의 일단부 방향으로 순차적으로 마련된 도입부, 체결부 및 완료부를 포함하고,The body portion includes an introduction portion, a fastening portion and a completion portion sequentially provided in the direction of one end of the body portion from the other end of the body portion,
    상기 다수 개의 체결나사산은 상기 체결부에 또는 상기 체결부 및 상기 완료부에 형성되는 것을 특징으로 하는 체결력이 향상된 태핑나사.The plurality of fastening screw thread is formed in the fastening portion or the fastening portion and the completion portion, characterized in that the tightening force is improved tapping screw.
  5. 제4항에 있어서,The method of claim 4, wherein
    상기 도입부의 외주면에는, 상기 체결나사산의 높이보다 큰 높이 및 상기 체결나사산의 너비보다 작은 너비를 가지는 적어도 하나 이상의 절개나사산이 구비되는 것을 특징으로 하는 체결력이 향상된 태핑나사.Tapping screw with improved tightening force, characterized in that the outer peripheral surface of the inlet portion is provided with at least one incision thread having a height greater than the height of the fastening screw thread and a width smaller than the width of the fastening screw thread.
  6. 제5항에 있어서, The method of claim 5,
    상기 절개나사산과 상기 체결나사산 사이의 피치 및 상기 체결나사산과 인접한 다른 체결나사산 사이의 피치는 상기 몸체부의 타단부에서 상기 몸체부의 일단부로 갈수록 증가되는 것을 특징으로 하는 체결력이 향상된 태핑나사. And a pitch between the incision screw thread and the screw thread and the pitch between the screw thread and another screw thread adjacent to the screw thread increases from one end of the body portion to one end of the body portion.
  7. 제5항에 있어서,The method of claim 5,
    상기 절개나사산은 단면이 직선인 플랭크면을 가지고, The incision screw thread has a flank surface having a straight cross section,
    상기 체결나사산은 단면이 곡선인 플랭크면을 가지도록 형성되는 것을 특징으로 하는 체결력이 향상된 태핑나사.The tightening screw thread is improved tapping screw, characterized in that the cross section is formed to have a curved flank surface.
  8. 제4항에 있어서,The method of claim 4, wherein
    상기 복수 개의 나사산은, 상기 몸체부의 타단부 쪽을 향하는 플랭크면인 제1 플랭크면과 상기 몸체부의 축선에 대한 수직선이 형성하는 제1 플랭크각과, 상기 몸체부의 일단부 쪽을 향하는 플랭크면인 제2 플랭크면과 상기 몸체부의 축선에 대한 수직선이 형성하는 제2 플랭크각을 포함하고,The plurality of threads are a first flank angle formed by a first flank surface, which is a flank surface facing the other end of the body portion, and a vertical line with respect to an axis line of the body portion, and a second flank surface which faces one end portion of the body portion. A second flank angle formed by a flank and a vertical line with respect to the axis of the body portion,
    상기 다수 개의 체결나사산은 상기 제1 플랭크각이 상기 제2 플랭크각 이상인 것을 특징으로 하는 체결력이 향상된 태핑나사.The plurality of fastening screws have a tightening force improved tapping screw, characterized in that the first flank angle is greater than the second flank angle.
  9. 제8항에 있어서,The method of claim 8,
    상기 완료부의 외주면에는, 상기 제1 플랭크각이 상기 제2 플랭크각보다 작은 적어도 하나 이상의 비대칭 나사산이 구비되는 것을 특징으로 하는 체결력이 향상된 태핑나사.Tapping screw with improved tightening force, characterized in that the outer peripheral surface of the completed portion, the first flank angle is provided with at least one asymmetric thread smaller than the second flank angle.
  10. 제9항에 있어서,The method of claim 9,
    상기 비대칭 나사산 및 상기 다수 개의 체결나사산 중 상기 비대칭 나사산과 마주하는 최후단 체결나사산 중 적어도 하나 이상의 나사산은, 나사산과 상기 몸체부가 만나는 부분에서 제1 플랭크면 또는 제2 플랭크면보다 완만한 각도로 형성된 전이부를 구비하는 것을 특징으로 하는 체결력이 향상된 태핑나사.At least one of the asymmetric threads and the last tightening screw thread facing the asymmetric thread among the plurality of tightening threads is a transition formed at a gentler angle than the first flank or the second flank at a portion where the thread and the body meet. Tapping screw with improved tightening force, characterized in that it comprises a portion.
PCT/KR2016/002735 2016-03-17 2016-03-17 Tapping screw having improved fastening force WO2017159898A1 (en)

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KR102060581B1 (en) 2017-03-30 2019-12-30 주식회사 서울금속 Tapping screw to improve force for contracting and preventing loosening
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WO2023229593A1 (en) * 2022-05-26 2023-11-30 Howmet Aerospace Inc. Fastener with tool-guiding tail

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5340254A (en) * 1992-01-31 1994-08-23 Textron Inc. Thread forming screw for forming an internal thread in a low ductility material
JP2001099122A (en) * 1999-08-13 2001-04-10 Hilti Ag Screw anchor
JP2012526931A (en) * 2009-05-12 2012-11-01 ヴァルレック・マンネスマン・オイル・アンド・ガス・フランス Set for making threaded connection structure for drilling and operation of hydrocarbon well and its threaded connection structure
KR20130133060A (en) * 2011-04-28 2013-12-05 닛또 세이꼬 가부시키가이샤 Self-tapping screw

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0642515A (en) * 1992-01-27 1994-02-15 Seiichiro Takasaki Screw
JPH0718016U (en) * 1993-08-31 1995-03-31 若井産業株式会社 screw
JPH081340U (en) * 1996-02-09 1996-09-03 日東精工株式会社 Tapping screw
JP3487210B2 (en) * 1999-03-16 2004-01-13 マックス株式会社 Screw and screw fastening method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5340254A (en) * 1992-01-31 1994-08-23 Textron Inc. Thread forming screw for forming an internal thread in a low ductility material
JP2001099122A (en) * 1999-08-13 2001-04-10 Hilti Ag Screw anchor
JP2012526931A (en) * 2009-05-12 2012-11-01 ヴァルレック・マンネスマン・オイル・アンド・ガス・フランス Set for making threaded connection structure for drilling and operation of hydrocarbon well and its threaded connection structure
KR20130133060A (en) * 2011-04-28 2013-12-05 닛또 세이꼬 가부시키가이샤 Self-tapping screw

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