CN111043126A - Difficult not hard up straw rope screw - Google Patents
Difficult not hard up straw rope screw Download PDFInfo
- Publication number
- CN111043126A CN111043126A CN201911376147.XA CN201911376147A CN111043126A CN 111043126 A CN111043126 A CN 111043126A CN 201911376147 A CN201911376147 A CN 201911376147A CN 111043126 A CN111043126 A CN 111043126A
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- Prior art keywords
- rod
- diameter
- straw rope
- thread
- screw
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- 239000010902 straw Substances 0.000 title claims description 55
- 244000025254 Cannabis sativa Species 0.000 claims abstract description 53
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000002023 wood Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
- F16B25/0084—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by geometric details of the tip
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
-
- 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
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
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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
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Food-Manufacturing Devices (AREA)
Abstract
The invention discloses a grass cord threaded nail difficult to loosen, which is characterized by comprising a screw head, a screw rod and a sharp tail end which are integrally formed, wherein one end of the screw rod is connected with the screw head, the other end of the screw rod is connected with the sharp tail end, the screw rod comprises a connecting part, a grass cord part and a threaded part, one end of the connecting part is connected with the screw head, the other end of the connecting part is connected with the grass cord part, the grass cord part comprises a grass cord rod and grass cord patterns arranged on the grass cord rod, one end of the grass cord rod is coaxially connected with the connecting part, the other end of the grass cord rod is connected with the threaded part, the grass cord patterns comprise a plurality of convex edges, the convex edges are spirally arranged around the circumference of the grass cord rod along the length direction of the grass cord rod, the plurality of convex edges are equidistantly arranged along the circumference of the grass cord rod, the threaded rod comprises a threaded part and threads arranged on the threaded rod, the sharp-pointed tail end is conical, and the end of the screw head far away from the connecting part is provided with a plum blossom groove.
Description
Technical Field
The invention relates to the technical field of fasteners, in particular to a threaded nail with a grass rope pattern, which is not easy to loosen in use.
Background
Among the prior art, when building the first house of timber structure or when connecting some die head frames, all carry out locking connection through the screw, however, current screw is after the locking, because receive external force factors such as vibrations or collision can slowly reverse and withdraw from, can become flexible after using for a long time, has caused the junction unstability of timber structure.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the screw nail with the grass string line, which is not easy to loosen in use.
In order to achieve the technical effects, the invention adopts the following scheme:
a straw rope screw nail not easy to loosen is characterized by comprising a screw head, a screw rod and a sharp tail end which are integrally formed, one end of the screw rod is connected with the screw head, the other end of the screw rod is connected with the sharp tail end, the screw rod comprises a connecting part, a straw rope part and a thread part, the diameter of the connecting part is 4.30-7.00 mm, one end of the connecting part is connected with the screw head, the other end of the connecting part is connected with the straw rope part, the diameter of the straw rope part is 4.60-8.00 mm, the length of the straw rope part is 5-13 mm, the straw rope part comprises a straw rope rod and straw rope patterns arranged on the straw rope rod, the diameter of the straw rope pattern rod is 4.30-7.00 mm, one end of the straw rope pattern rod is coaxially connected with the connecting part, the other end of the straw rope pattern comprises a plurality of convex edges, the convex edges are spirally arranged around the straw rope line rod along the length direction of the straw rope line rod, the plurality of the convex edges, the length of screw thread portion is 30 ~ 80mm, and the diameter size is 5.80 ~ 10.25mm, and screw thread portion includes the threaded rod and is located the screw thread on the threaded rod, and the diameter size of threaded rod is 3.60 ~ 6.50mm, the one end and the grass rope line pole coaxial coupling of threaded rod, and sharp-pointed end is connected to the other end of threaded rod, and sharp-pointed end is the taper shape, and the contained angle of sharp portion at sharp-pointed end is 20 ~ 30, and the one end that connecting portion were kept away from to the screw head has the plum blossom groove.
According to the preferable technical scheme, the thread pitch between threads of the threads is 4.50-6.60 mm, and the included angle of the tooth tops of the threads is 40 degrees.
According to the preferable technical scheme, the rear part of the threaded part is provided with a cut tail, the length of the cut tail is 12.00-18.00 mm, and the cut tail extends from the sharp tail end to one end of the screw head.
According to the preferable technical scheme, the straw rope line rod and the threaded rod are connected through the spacing rod, the spacing rod is coaxially arranged with the straw rope line rod and the threaded rod, and the length of the spacing rod is smaller than 2 mm.
The optimized technical scheme includes that the screw head comprises a washer sheet, the thickness of the washer sheet is 1.35-2.35 mm, the diameter of the washer sheet is 14.50-26.50 mm, one side of the washer sheet is connected with a connecting part through a gradual change part, the gradual change part is in a round table shape, the larger end of the gradual change part is connected with the washer sheet, the smaller end of the size is connected with the connecting part, the washer sheet, the gradual change part and the connecting part are coaxially arranged, the side, away from the gradual change part, of the washer sheet protrudes outwards to form a protruding part, the protruding part is located at the center of the washer sheet, the thickness of the protruding part is 1.35-1.95 mm, the diameter of the protruding part is 10.00-21.00 mm, the end face of the protruding part is provided with a plum blossom groove, and the depth of the plum blossom groove is 2.40-3.85.
According to the preferable technical scheme, the diameter of the connecting part is 4.30mm, the diameter of the grass rope line part is 4.60-4.90 mm, the diameter of the grass rope line rod is 4.30mm, the diameter of the spacing rod is 4.30mm, the length of the grass rope line part is 5-13 mm, the diameter of the thread part is 5.80-6.20 mm, the length of the thread part is 30-80 mm, the diameter of the thread rod is 3.60-4.00 mm, the thread pitch of the thread is 4.5mm, the length of the tail is 12-14 mm, the thickness of the wafer piece is 1.35-1.65 mm, the diameter of the wafer piece is 14.50-16.10 mm, the thickness of the bulge is 1.35-1.85 mm, and the depth of the plum blossom groove is 2.40-2.85 mm.
According to the preferable technical scheme, the diameter of the connecting part is 5.80mm, the diameter of the grass rope line part is 6.60-6.90 mm, the diameter of the grass rope line rod is 5.80mm, the diameter of the spacing rod is 5.80mm, the length of the grass rope line part is 11-13 mm, the diameter of the thread part is 7.80-8.20 mm, the length of the thread part is 50-80 mm, the diameter of the thread rod is 5.15-5.50 mm, the thread pitch of the thread is 5.5mm, the length of the tail is 14-16 mm, the thickness of the wafer piece is 1.65-2.15 mm, the diameter of the wafer piece is 20.50-22.50 mm, the thickness of the bulge is 1.20-1.70 mm, and the depth of the plum blossom groove is 3.00-3.45 mm.
According to the preferable technical scheme, the diameter of the connecting part is 7.00mm, the diameter of the grass rope line part is 7.80-8.00 mm, the diameter of the grass rope line rod is 7.00mm, the diameter of the spacing rod is 7.00mm, the length of the grass rope line part is 11-13 mm, the diameter of the thread part is 9.60-10.25 mm, the length of the thread part is 50-80 mm, the diameter of the rod part is 6.00-6.50 mm, the thread pitch of the thread is 6.60mm, the length of the tail is 16-18 mm, the thickness of the wafer piece is 1.95-2.35 mm, the diameter of the wafer piece is 23.50-26.50 mm, the thickness of the bulge is 1.45-2.35 mm, and the depth of the plum blossom groove is 3.40-3.85 mm.
Compared with the prior art, beneficial effect does:
the screw nail locking structure is simple in structure and convenient to use, the straw rope thread part is arranged between the thread part and the screw head, the straw rope thread part is also driven into wood after the screw nail is driven into the wood for locking, and the screw nail is not easy to reverse and withdraw due to the friction effect of the straw rope thread on the wood after the screw nail locks the wood, so that the screw nail is loosened.
Drawings
FIG. 1 is a schematic of the present invention;
fig. 2 is a side view of the screw head of the present invention.
Reference numerals: 1. a screw head; 101. a washer slice; 102. a gradual change portion; 103. a boss portion; 104. a plum blossom groove; 2. a connecting portion; 3. a grass cord section; 301. a straw rope line rod; 302. grass string lines; 4. a spacer bar; 5. a threaded portion; 501. a threaded rod; 502. a thread; 6. a sharp tip; 7. and (5) cutting the tail.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
As shown in FIG. 1, a not easy loose screw 502 nail of straw rope comprises a screw shaft, one end of the screw shaft is connected with a screw head 1, and the other end of the screw shaft is a sharp end 6. The screw head 1, the screw shaft and the sharp distal end 6 are integrally formed.
The lead screw includes connecting portion 2, grass rope line portion 3 and screw portion 5, and the one end and the screw head 1 of connecting portion 2 are connected, and the one end of grass rope line portion 3 is connected to the other end, and the other end of grass rope line portion 3 is connected with the one end of screw portion 5, and the other end of screw portion 5 is sharp-pointed end 6.
The sharp end 6 is conical, and the included angle of the sharp end 6 is 20-30 degrees.
The shape of connecting portion 2 is the cylinder shape, the numerical range of the diameter size of connecting portion 2 is 4.30 ~ 7.00mm, the numerical range of the diameter size of grass rope line portion 3 is 4.60 ~ 8.00mm, 3 length of grass rope line portion is 5 ~ 13mm, grass rope line portion 3 includes grass rope line pole 301 and sets up the grass rope line 302 on grass rope line pole 301, the diameter size of grass rope line pole 301 is 4.30 ~ 7.00mm, grass rope line 302 includes a plurality of archs, the arch is located the outer wall of grass rope line pole 301, the arch is along the length direction round grass rope line pole 301 spiral extension of grass rope line pole 301, a plurality of archs are equidistant setting in the circumference of grass rope line pole 301.
The grass rope pattern part 3 is connected with the thread part 5 through the spacing rod 4, the length of the spacing rod 4 is smaller than 2.0mm, and the diameter of the spacing rod 4 is 4.30-7.00 mm.
The length of screw thread portion 5 is 30 ~ 80mm, the diameter size of screw thread portion 5 is 5.80 ~ 10.25mm, screw thread portion 5 includes threaded rod 501, spacer bar 4 is connected to threaded rod 501's one end, spacer bar 4's length is less than 2.0mm, threaded rod 501's the other end is sharp-pointed end 6, threaded rod 501's diameter size is 3.60 ~ 6.50mm, threaded rod 501 goes up to be equipped with screw thread 502 around threaded rod 501's axial, the distance between two adjacent two threads of screw thread 502 is 4.50 ~ 6.60mm, the contained angle of the cusp at screw thread top is 40.
The rear part of the thread part 5 is provided with a cutting tail 7, the length of the cutting tail 7 is 12.00-18.00 mm, and the cutting tail 7 extends from the sharp tail end 6 to one end of the screw part.
The screw head 1 comprises a washer sheet 101, the thickness of the washer sheet 101 is 1.35-2.35 mm, the diameter of the washer sheet 101 is 14.50-26.50 mm, one side of the washer sheet 101 is connected with a connecting part 2 through a gradual change part 102, the gradual change part 102 is in a circular truncated cone shape, the larger end of the gradual change part 102 is connected with the washer sheet 101, the smaller end of the size is connected with the connecting part 2, the washer sheet 101, the gradual change part 102 and the connecting part 2 are coaxially arranged, one end, far away from the gradual change part 102, of the washer sheet 101 protrudes outwards to form a protruding part 103, the protruding part 103 is located in the center of the washer sheet 101, the thickness of the protruding part 103 is 1.35-1.95 mm, the diameter of the protruding part 103 is 10.00-21.00 mm, the end face of the protruding part 103 is provided with a quincunx groove 104, and the depth of the quincunx groove 104 is 2.40.
Example 1
In the embodiment 1, the diameter of the connecting part 2 is 4.30mm, the diameter of the grass cord part 3 is 4.60-4.90 mm, the diameter of the grass cord rod 301 is 4.30mm, the diameter of the spacing rod 4 is 4.30mm, the length of the grass cord part 3 is 5-13 mm, the diameter of the thread part 5 is 5.80-6.20 mm, the length of the thread part 5 is 30-80 mm, the diameter of the threaded rod 501 is 3.60-4.00 mm, the pitch of the thread 502 is 4.5mm, the length of the tail 7 is 12-14 mm, the thickness of the washer sheet 101 is 1.35-1.65 mm, the diameter of the washer sheet 101 is 14.50-16.10 mm, the thickness of the bulge is 1.35-1.85 mm, and the depth of the plum blossom groove 104 is 2.40-2.85 mm. The breaking torque of the product involved in this example can reach 11 n.m.
Example 2
Example 2 differs from example 1 in that:
the diameter of the connecting part 2 is 5.80mm, the diameter of the grass cord part 3 is 6.60-6.90 mm, the diameter of the grass cord rod 301 is 5.80mm, the diameter of the spacing rod 4 is 5.80mm, the length of the grass cord part 3 is 11-13 mm, the diameter of the thread part 5 is 7.80-8.20 mm, the length of the thread part 5 is 50-80 mm, the diameter of the threaded rod 501 is 5.15-5.50 mm, the pitch of the thread 502 is 5.5mm, the length of the cutting tail 7 is 14-16 mm, the thickness of the washer sheet 101 is 1.65-2.15 mm, the diameter of the washer sheet 101 is 20.50-22.50 mm, the thickness of the bulge is 1.20-1.70 mm, and the depth of the quincunx groove 104 is 3.00-3.45 mm. The breaking torque of the product involved in this example can reach 28 n.m.
Example 3
Example 3 differs from example 1 in that:
the diameter of the connecting part 2 is 7.00mm, the diameter of the grass string line part 3 is 7.80-8.00 mm, the diameter of the grass string line rod 301 is 7.00mm, the diameter of the spacing rod 4 is 7.00mm, the length of the grass string line part 3 is 11-13 mm, the diameter of the thread part 5 is 9.60-10.25 mm, the length of the thread part 5 is 50-80 mm, the diameter of the rod part is 6.00-6.50 mm, the thread pitch of the thread 502 is 6.60mm, the length of the tail 7 is 16-18 mm, the thickness of the washer sheet 101 is 1.95-2.35 mm, the diameter of the washer sheet 101 is 23.50-26.50 mm, the thickness of the bulge is 1.45-2.35 mm, and the depth of the quincunx groove 104 is 3.40-3.85 mm. The breaking torque of the product involved in this example can reach 44 n.m.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, refer to orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention are conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience in describing and simplifying the description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (8)
1. A straw rope screw nail not easy to loosen is characterized by comprising a screw head, a screw rod and a sharp tail end which are integrally formed, one end of the screw rod is connected with the screw head, the other end of the screw rod is connected with the sharp tail end, the screw rod comprises a connecting part, a straw rope part and a thread part, the diameter of the connecting part is 4.30-7.00 mm, one end of the connecting part is connected with the screw head, the other end of the connecting part is connected with the straw rope part, the diameter of the straw rope part is 4.60-8.00 mm, the length of the straw rope part is 5-13 mm, the straw rope part comprises a straw rope rod and straw rope patterns arranged on the straw rope rod, the diameter of the straw rope pattern rod is 4.30-7.00 mm, one end of the straw rope pattern rod is coaxially connected with the connecting part, the other end of the straw rope pattern comprises a plurality of convex edges, the convex edges are spirally arranged around the straw rope line rod along the length direction of the straw rope line rod, the plurality of the convex edges, the length of screw thread portion is 30 ~ 80mm, and the diameter size is 5.80 ~ 10.25mm, and screw thread portion includes the threaded rod and is located the screw thread on the threaded rod, and the diameter size of threaded rod is 3.60 ~ 6.50mm, the one end and the grass rope line pole coaxial coupling of threaded rod, and sharp-pointed end is connected to the other end of threaded rod, and sharp-pointed end is the taper shape, and the contained angle of sharp portion at sharp-pointed end is 20 ~ 30, and the one end that connecting portion were kept away from to the screw head has the plum blossom groove.
2. The non-loose straw rope screw according to claim 1, wherein the pitch between the threads of the screw is 4.50 to 6.60mm, and the included angle of the crests of the threads is 40 °.
3. The non-loosening straw rope screw nail as claimed in claim 1, wherein a tail is provided at the rear of the threaded portion, the length of the tail is 12.00-18.00 mm, and the tail extends from the sharp end to one end of the screw head.
4. The non-loose straw rope threaded nail as claimed in claim 1, wherein the straw rope threaded rod is connected with the threaded rod through a spacing rod, the spacing rod is coaxially arranged with the straw rope threaded rod and the threaded rod, and the length of the spacing rod is less than 2 mm.
5. The difficult-to-loosen straw rope screw according to claim 1, wherein the screw head comprises a washer sheet, the thickness of the washer sheet is 1.35-2.35 mm, the diameter of the washer sheet is 14.50-26.50 mm, one side of the washer sheet is connected with the connecting portion through a gradually-changing portion, the gradually-changing portion is in a circular truncated cone shape, one end of the gradually-changing portion, which is large in size, is connected with the washer sheet, one end of the gradually-changing portion, which is small in size, is connected with the connecting portion, the washer sheet, the gradually-changing portion and the connecting portion are coaxially arranged, one side of the washer sheet, which is far away from the gradually-changing portion, protrudes outwards to form a protruding portion, the protruding portion is located in the center of the washer sheet, the thickness of the protruding portion is 1.35-1.95 mm, the diameter of the protruding portion is 10.00-21.00 mm, a quincunx groove is formed in the end face.
6. The non-loosening straw rope screw according to claim 5, wherein the diameter of the connecting part is 4.30mm, the diameter of the straw rope thread part is 4.60-4.90 mm, the diameter of the straw rope thread rod is 4.30mm, the diameter of the spacer rod is 4.30mm, the length of the straw rope thread part is 5-13 mm, the diameter of the thread part is 5.80-6.20 mm, the length of the thread part is 30-80 mm, the diameter of the thread rod is 3.60-4.00 mm, the pitch of the thread is 4.5mm, the length of the tail is 12-14 mm, the thickness of the washer piece is 1.35-1.65 mm, the diameter of the washer piece is 14.50-16.10 mm, the thickness of the bulge is 1.35-1.85 mm, and the depth of the quincunx groove is 2.40-2.85 mm.
7. The non-loosening straw rope screw according to claim 5, wherein the diameter of the connecting part is 5.80mm, the diameter of the straw rope thread part is 6.60-6.90 mm, the diameter of the straw rope thread rod is 5.80mm, the diameter of the spacing rod is 5.80mm, the length of the straw rope thread part is 11-13 mm, the diameter of the thread part is 7.80-8.20 mm, the length of the thread part is 50-80 mm, the diameter of the thread rod is 5.15-5.50 mm, the pitch of the thread is 5.5mm, the length of the tail is 14-16 mm, the thickness of the washer piece is 1.65-2.15 mm, the diameter of the washer piece is 20.50-22.50 mm, the thickness of the bulge is 1.20-1.70 mm, and the depth of the plum blossom groove is 3.00-3.45 mm.
8. The non-loosening straw rope screw according to claim 5, wherein the diameter of the connecting part is 7.00mm, the diameter of the straw rope thread part is 7.80-8.00 mm, the diameter of the straw rope thread rod is 7.00mm, the diameter of the spacer rod is 7.00mm, the length of the straw rope thread part is 11-13 mm, the diameter of the thread part is 9.60-10.25 mm, the length of the thread part is 50-80 mm, the diameter of the rod part is 6.00-6.50 mm, the pitch of the thread is 6.60mm, the length of the tail is 16-18 mm, the thickness of the washer piece is 1.95-2.35 mm, the diameter of the washer piece is 23.50-26.50 mm, the thickness of the bulge is 1.45-2.35 mm, and the depth of the plum blossom groove is 3.40-3.85 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911376147.XA CN111043126A (en) | 2019-12-27 | 2019-12-27 | Difficult not hard up straw rope screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911376147.XA CN111043126A (en) | 2019-12-27 | 2019-12-27 | Difficult not hard up straw rope screw |
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| CN111043126A true CN111043126A (en) | 2020-04-21 |
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| CN201911376147.XA Pending CN111043126A (en) | 2019-12-27 | 2019-12-27 | Difficult not hard up straw rope screw |
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| CN207750346U (en) * | 2018-01-05 | 2018-08-21 | 浙江银茂进出口股份有限公司 | A kind of quick attack wood screw |
| CN211667008U (en) * | 2019-12-27 | 2020-10-13 | 嘉善永固五金制造有限公司 | Difficult not hard up straw rope screw |
-
2019
- 2019-12-27 CN CN201911376147.XA patent/CN111043126A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000352409A (en) * | 1999-06-14 | 2000-12-19 | Ykk Architectural Products Inc | Frame adjusting screw |
| CN204610523U (en) * | 2015-03-09 | 2015-09-02 | 邯郸市正信标准件有限公司 | Derotation backing-up screw |
| CN104948555A (en) * | 2015-06-16 | 2015-09-30 | 浙江天开实业有限公司 | Double-layer head plum blossom-shaped groove knurling tail cutting screw with six ribs |
| CN205478788U (en) * | 2015-12-24 | 2016-08-17 | 天津天宇通天精密紧固件有限公司 | Novel improve self tapping locking screw of structure |
| CN205895829U (en) * | 2016-08-17 | 2017-01-18 | 上海美固澄梵紧固件有限公司 | Ground plate bolt |
| CN207750346U (en) * | 2018-01-05 | 2018-08-21 | 浙江银茂进出口股份有限公司 | A kind of quick attack wood screw |
| CN211667008U (en) * | 2019-12-27 | 2020-10-13 | 嘉善永固五金制造有限公司 | Difficult not hard up straw rope screw |
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