CN204610497U - Folder ear self-tapping screw - Google Patents
Folder ear self-tapping screw Download PDFInfo
- Publication number
- CN204610497U CN204610497U CN201520137141.8U CN201520137141U CN204610497U CN 204610497 U CN204610497 U CN 204610497U CN 201520137141 U CN201520137141 U CN 201520137141U CN 204610497 U CN204610497 U CN 204610497U
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- screw
- screw rod
- head
- folder ear
- threaded area
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Abstract
The utility model discloses a kind of folder ear self-tapping screw, belong to technical field of fastening.Comprise screw head and screw rod, it is characterized in that described screw rod divides two sections, first paragraph, near screw head side, is threaded area, screw rod is provided with screw thread; Second segment is near side, screw acting end, for without threaded area, the effect end of screw rod is provided with two cutting slots, and above cutting slot, screw rod is provided with a pair folder ear without threaded area, described screw head is tack, round end or countersunk head, and the lower end surface of screw head is provided with projection.Feature of the present utility model is that chip removal is smooth and easy fast, keeps cutting power and the sharpness at most advanced and sophisticated position, and penetrating power is strong, and attack speed soon, sealed ability is good, and screw fastening is good, effectively prevents screw loosening and rollback.
Description
Technical field
The utility model relates to technical field of fastening.
Background technique
Fastening piece be fastening two or more parts (or component) be fastenedly connected become one overall time the general name of class mechanical parts that adopts, be widely used in above various machinery, equipment, vehicle, boats and ships, railway, bridge, building, structure, instrument, instrument, chemical industry, instrument and articles for use etc., its feature is that description is various, performance purposes is different, and standardization, seriation, unitized degree are also high.
Screw is a kind of the most frequently used fastening part, utilizes the inclined-plane circular rotating of object and the physics of frictional force and mathematical principle, the instrument of incremental fastening implements parts.Self-tapping screw is the new invention of people in recent years, self-tapping screw is the screw that there is self tapping drill head screw front end, it does not need attaching nut to use, also tapping screw is, the afterbody of self-tapping screw is in boring tail or fine stern shape, without the need to elder generation's grooved bit silk on workpiece, directly boring, tapping, locking on material, basic material can be set, compared with plain screw, the tough pull out force of self-tapping screw and maintenance energy high, after combination, the time long also can not loosen, and uses simple and safe, punching tapping one-pass operation, time and labour saving is laborsaving.Self-tapping screw is mainly used in the fastening piece of fixed metal plate as steel plate, is generally used for sealed sheet metal and nonmetal plate, as silica-calcium board, gypsum board and various plank are directly fixed on sheet metal.The rational SELF DRILLING SCREWS of project organization, can make sheet metal and matching board firmly sealed, avoid the breakage of matching board, scratch, easy for installation.
Application number be 03102070.4 Chinese patent disclose a kind of SELF DRILLING SCREWS, it includes head, is located at the bar portion of lower head; This bar portion is provided with screw thread, be provided with cutting portion at the end in this bar portion, this cutting portion is provided with cutting slot and alar part, between bar portion and cutting portion, be provided with chip removal collar, this chip removal collar can provide rapid and larger solid capacity, to keep the cutting function of SELF DRILLING SCREWS and to reduce sealed torsion.When the sealed sheet metal of this self-tapping screw and plank, cutting portion is first holed in wood, wood chip is discharged after cutting slot enters rapidly chip removal collar again, to make, wood chip is unlikely to be resided in cutting slot in a large number, and when cutting portion shoots iron plate through plank, the interior Beveled ends of alar part can be encountered the position beyond the internal diameter in hole and rupture, like this, this alar part can not produce larger effect to hole, can keep the thickness of iron plate and the sealed property with screw, makes the sealed power that this SELF DRILLING SCREWS can provide best.But this SELF DRILLING SCREWS is when drilling iron plate, alar part cut process in from it in Beveled ends rupture completely, hole less, screw and the sealed good situation of iron plate is made to be the most perfect condition of one, often be difficult to realize in real operation, alar part generally can not be destroyed completely, present screw is generally all through heat treated, hardness strength is all very high, and iron plate generally can not through such process, and in order to save cost and time, present iron plate is general all thinner, so just cause in boring procedure, alar part can not be destroyed completely, the cutting portion of adding this SELF DRILLING SCREWS is consistent with bar portion diameter, thus cause aperture excessive, the sealed power of screw and iron plate is just little, sealed firmly effect can not be reached, and sealed after, the head of SELF DRILLING SCREWS protrudes from outside sealed object, also unsightly.
Application number be 200820114400.5 Chinese patent disclose a kind of dormant self-drilling screw, it comprises a head, a bar portion, a cutting part and a pair folder ear, described bar portion is located at lower head, this bar portion is provided with screw thread, described cutting portion is located at bar portion end, this cutting portion is provided with cutting slot, described cutting portion diameter is less than the core diameter of thread in bar portion, described folder ear is symmetricly set in the root of cutting portion, this model utility structure is simple, chip removal is smooth and easy, penetrating power is strong and sealed ability is good, head intrinsic energy enters in closure, attractive in appearance.But the cutting portion diameter of this model utility is less than the core diameter of thread in bar portion, the key property of SELF DRILLING SCREWS is for boring permeability, if the edge of a knife footpath of cutting portion is too small, the surface hardness of cutting portion and borehole strength can be made to reduce, and then the moment of torsion dynamics that can strengthen when folder ear shoots the reaming of the nonmetal plate such as plank, gypsum board, when if not sheet metal quality is harder, press from both sides ear when torque force is excessive to rupture possibly, the bad meeting of folder tail causes attacks speed deficiency, insufficient strength, affects SELF DRILLING SCREWS and shoots sheet metal.In addition, the cutting slot of this SELF DRILLING SCREWS cutting portion is less, when shooting nonmetal version, the a large amount of chips produced of holing mostly are deposited in cutting slot, increase moment of torsion dynamics, and then affect the sharpness of cutting face and point, cannot continue to cut smoothly and hole, and then cannot sheet metal be drilled.
Model utility content
The technical problems to be solved in the utility model is for above-mentioned the deficiencies in the prior art, a kind of folder ear self-tapping screw is provided, feature is that chip removal is smooth and easy fast, keep cutting power and the sharpness at most advanced and sophisticated position, penetrating power is strong, and attack speed soon, sealed ability is good, screw fastening is good, effectively prevents screw loosening and rollback.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of folder ear self-tapping screw, and comprise screw head and screw rod, it is characterized in that described screw rod divides two sections, first paragraph, near screw head side, is threaded area, screw rod is provided with screw thread; Second segment is near side, screw acting end, for without threaded area, be provided with two cutting slots in screw acting end, above cutting slot, screw rod is provided with a pair folder ear without threaded area, described screw head is tack, round end or countersunk head, and the lower end surface of screw head is provided with projection.
As preferably, the projection of described screw head lower end surface is triangle strip, each other radially.
As preferably, described projection is not less than 4.
As preferably, the described length without threaded area is less than the length of threaded area.
As preferably, the thread profile of described screw thread is triangle, rectangle, trapezoidal, circular arc or zigzag fashion.
As preferably, described folder ear is semicircle, half elliptic, triangle or rectangle.
The beneficial effect adopting technique scheme to produce is: feature of the present utility model is that chip removal is smooth and easy fast, keeps cutting power and the sharpness at most advanced and sophisticated position, and penetrating power is strong, and sealed ability is good.Screw fastening is good, effectively prevents screw loosening and rollback.The effect of folder ear can play reaming when attacking plate, the not effect of arm-tie.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1, screw head; 2, screw rod; 3, screw thread; 4, cutting slot; 5, protruding; 6, ear is pressed from both sides.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
A kind of folder ear self-tapping screw, comprise screw head 1 and screw rod 2, it is characterized in that described screw rod 2 points two sections, first paragraph, near screw head 1 side, is threaded area, screw rod 2 is provided with screw thread 3; Second segment acts on side, end near screw rod 2, for without threaded area, length without threaded area is less than the length of threaded area, act on end at screw rod 2 and be provided with two cutting slots 4, above cutting slot 4 screw rod 2 threaded area is provided with a pair folder ear 6, folder ear 6 be semicircle, screw head 1 is countersunk head, the lower end surface of countersunk head is provided with 6 triangle strip projected parts 5, and the thread profile of screw thread 3 is triangle.
When this folder ear self-tapping screw locking sheet metal and plank, cutting slot 4 first shoots boring on plank, wood chip is discharged after cutting slot 4 enters rapidly groove, to make, wood chip is unlikely resides in the sharpness affecting cutting slot in cutting slot 4 in a large number, the hole of cutting slot tapping expands by folder ear 6, make to leave certain gap between screw rod 2 and plank, so that a large amount of wood chips produced when storing boring, ensure that screw can continue to cut and boring, folder ear 6 outermost edges and tip, screw rod 2 end are in a sharp centrum shape, sealed dynamics can be strengthened, power is provided support when sheet metal shot by screw, make screw precisely can shoot sheet metal fast, press from both sides ear 6 to be struck off when shooting sheet metal, screw is attacked smoothly and wears sheet metal.The plank drag at edge of holing in sealed process cuts away by the triangle strip projected parts 5 of screw head 1 lower end surface, and be blocked in aperture and prevent the wood chip in screw rod 2 and plank gap from overflowing, do not cause environmental pollution, strengthen locking effect, screw is not easily loosened, sealed last screw head 1 sinks in plank, both effectively prevent screw loosening rollback, elegant in appearance again.
Claims (6)
1. press from both sides an ear self-tapping screw, comprise screw head (1) and screw rod (2), it is characterized in that described screw rod (2) divides two sections, first paragraph, near screw head (1) side, is threaded area, and screw rod (2) is provided with screw thread (3); Second segment is near screw rod (2) effect side, end, for without threaded area, two cutting slots (4) are provided with in the effect end of screw rod (2), above cutting slot (4), screw rod (2) is provided with a pair folder ear (6) without threaded area, described screw head (1) is tack, round end or countersunk head, and the lower end surface of screw head (1) is provided with projection (5).
2. folder ear self-tapping screw according to claim 1, is characterized in that the projection (5) of described screw head (1) lower end surface is triangle strip, each other radially.
3. folder ear self-tapping screw according to claim 2, is characterized in that described projection (5) is not less than 4.
4. folder ear self-tapping screw according to claim 1, is characterized in that the described length without threaded area is less than the length of threaded area.
5. folder ear self-tapping screw according to claim 1, is characterized in that the thread profile of described screw thread (3) is triangle, rectangle, trapezoidal, circular arc or zigzag fashion.
6. folder ear self-tapping screw according to claim 1, is characterized in that described folder ear (6) is for semicircle, half elliptic, triangle or rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520137141.8U CN204610497U (en) | 2015-03-11 | 2015-03-11 | Folder ear self-tapping screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520137141.8U CN204610497U (en) | 2015-03-11 | 2015-03-11 | Folder ear self-tapping screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204610497U true CN204610497U (en) | 2015-09-02 |
Family
ID=53963066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520137141.8U Expired - Fee Related CN204610497U (en) | 2015-03-11 | 2015-03-11 | Folder ear self-tapping screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204610497U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782202A (en) * | 2016-04-21 | 2016-07-20 | 海盐新盛达标准件有限公司 | Easily-rotated wood screw capable of achieving chip guiding |
| CN105965553A (en) * | 2016-07-01 | 2016-09-28 | 阳江拓必拓科技股份有限公司 | Folding knife convenient for replacing blade |
| CN106168318A (en) * | 2016-08-03 | 2016-11-30 | 莱芜钢铁集团有限公司 | Integration bearing |
| CN107044474A (en) * | 2017-05-02 | 2017-08-15 | 上海宏挺紧固件制造有限公司 | A kind of headed self-tapping self-drilling screw |
| CN107906104A (en) * | 2017-11-06 | 2018-04-13 | 沈大年 | A kind of self drilling tapping screw |
-
2015
- 2015-03-11 CN CN201520137141.8U patent/CN204610497U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782202A (en) * | 2016-04-21 | 2016-07-20 | 海盐新盛达标准件有限公司 | Easily-rotated wood screw capable of achieving chip guiding |
| CN105965553A (en) * | 2016-07-01 | 2016-09-28 | 阳江拓必拓科技股份有限公司 | Folding knife convenient for replacing blade |
| CN105965553B (en) * | 2016-07-01 | 2018-10-16 | 阳江拓必拓工业技术研究院有限公司 | A kind of jack knife being conveniently replaceable blade |
| CN106168318A (en) * | 2016-08-03 | 2016-11-30 | 莱芜钢铁集团有限公司 | Integration bearing |
| CN107044474A (en) * | 2017-05-02 | 2017-08-15 | 上海宏挺紧固件制造有限公司 | A kind of headed self-tapping self-drilling screw |
| CN107906104A (en) * | 2017-11-06 | 2018-04-13 | 沈大年 | A kind of self drilling tapping screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 Termination date: 20160311 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |