阅读说明：本技术 一种易拆卸的自攻螺钉 (Quick detachable self-tapping screw ) 是由 富胜波 于 2020-06-29 设计创作，主要内容包括：本发明提供一种易拆卸的自攻螺钉,包括螺钉头、螺钉杆、椎体、手柄,所述螺钉头的中间设有第一凸条,所述第一凸条的两侧设有第二凸条,所述手柄的下侧两端设有凹槽,所述螺钉头下端设有连接杆,所述螺钉杆包括光滑部和螺纹部,所述光滑部上端设有连接槽,所述光滑部下端设有螺纹部,所述螺纹部上设有若干条自攻螺纹,所述螺纹部包括第一螺纹部和第二螺纹部,位于第二螺纹部上自攻螺纹上设有若干个自攻齿,所述椎体的上端一周设有连接片,所述连接片下端设有若干个刀片。本发明一种易拆卸的自攻螺钉,能够防止安装时间长而生锈,降低拆卸难度；而且能够避免在旋转时对目标物造成开裂的情形。(The invention provides an easily detachable self-tapping screw which comprises a screw head, a screw rod, a centrum and a handle, wherein a first convex strip is arranged in the middle of the screw head, second convex strips are arranged on two sides of the first convex strip, grooves are formed in two ends of the lower side of the handle, a connecting rod is arranged at the lower end of the screw head, the screw rod comprises a smooth part and a threaded part, a connecting groove is formed in the upper end of the smooth part, a threaded part is arranged at the lower end of the smooth part, a plurality of self-tapping threads are arranged on the threaded part, the threaded part comprises a first threaded part and a second threaded part, a plurality of self-tapping teeth are arranged on the self-tapping threads on the second threaded part, a connecting piece is arranged on the. The easily-detachable self-tapping screw can prevent rusting due to long installation time and reduce the detachment difficulty; and the situation that the target object is cracked during rotation can be avoided.)

1. The utility model provides a quick detachable self-tapping screw which characterized in that: including screwhead (1), screw rod (2), centrum (3), handle (4), the centre of screwhead (1) is equipped with first sand grip (11), the both sides of first sand grip (11) are equipped with second sand grip (12), first sand grip (11) are the same with second sand grip (12), the downside both ends of handle (4) are equipped with recess (41), recess (41) and first sand grip (11) phase-match, the lower extreme of screwhead (1) is equipped with connecting rod (13), be equipped with the external screw thread on connecting rod (13), screw rod (2) are including smooth portion (21) and screw portion (22), the upper end of smooth portion (21) is equipped with spread groove (211), spread groove (211) are equipped with the internal thread, connecting rod (13) and spread groove (211) are through external screw thread and internal thread swivelling joint, the lower extreme of smooth portion (21) is equipped with screw portion (22), be equipped with a plurality of self tapping screw thread (221) on screw thread portion (22), screw thread portion (22) are equipped with a plurality of self tapping tooth (23) including first screw thread portion (222) and second screw thread portion (223) on self tapping screw thread (221) that are located second screw thread portion (223), the lower extreme of second screw thread portion (223) is equipped with centrum (3), upper end a week of centrum (3) is equipped with connection piece (31), the lower extreme of connection piece (31) is equipped with a plurality of blade (311), the lower extreme of blade (311) is equipped with cutting edge (312), cutting edge (312) set up perpendicularly downwards.

2. A self-tapping screw quick to detach as set forth in claim 1, wherein: first sand grip (11) and second sand grip (12) are the hexagon, recess (41) are the hexagonal recess, handle (4) are "butyl" shape, outer wall a week of handle (4) still is equipped with rubber sleeve (42), is located handle (4) lower extreme two distance between recess (41) is greater than the radius of screwhead (1), is located handle (4) lower extreme two distance between recess (41) equals with the distance in the middle of two second sand grips (12), the upper end of handle (4) is equipped with grips strip (43).

3. A self-tapping screw quick to detach as set forth in claim 1, wherein: the length of the smooth part (21) is one fourth to one fifth of the length of the thread part (22), and the length of the first thread part (222) is three fifths to two thirds of the length of the second thread part (223).

4. A self-tapping screw quick to detach as set forth in claim 1, wherein: the upper end of smooth portion (21) is equipped with bulge loop (212), the width of bulge loop (212) is smooth portion (21) radial third to half, the downside of bulge loop (212) bonds and has sealing ring (213), the upper end of smooth portion (21) still is equipped with plastics stopper (214), plastics stopper (214) insert in connecting groove (211), plastics stopper (214) external diameter is identical with the internal diameter of connecting groove (211), the length of plastics stopper (214) is identical with the length of connecting groove (211), the upper end of plastics stopper (214) is equipped with and carries pull ring (215).

5. A self-tapping screw quick to detach as set forth in claim 1, wherein: the length of the vertebral body (3) is one fourth to one third of the length of the screw rod (2), the outer diameter of the connecting piece (31) is smaller than or equal to the outer diameter of the screw rod (2), a plurality of chip removal holes (313) are formed in the side edge of the connecting piece (31), chip removal grooves (314) are formed above the chip removal holes (313), the number of the chip removal holes (313) corresponds to the number of the blades (311) one by one, the number of the blades (311) is 2-4, and the length of the blades (311) is one fourth to one third of the length of the vertebral body (3).

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of fasteners, in particular to a self-tapping screw easy to disassemble.

[ background of the invention ]

The self-tapping screw is a common connecting piece, and is wide in application and convenient to operate. The self-tapping screw mainly comprises a head, a column and a cone which are connected, wherein threads are arranged on the column and the cone. When the existing tapping screw is used, if a target object is very fragile or has high density, the target object is easy to crack due to the extrusion effect in the process of screwing the tapping screw into the target object, and the tapping screw is easy to rust along with the prolonging of the installation time, so that the difficulty of disassembly is increased.

[ summary of the invention ]

The invention aims to solve the problems in the prior art and provides the self-tapping screw easy to disassemble, wherein the head of the screw and the screw rod are detachable, and the upper end of the screw rod is sealed by a plastic plug, so that the phenomenon of rusting caused by long installation time is prevented, and the disassembling difficulty is reduced; and the situation that the target object is cracked during rotation can be avoided.

In order to achieve the purpose, the invention provides a self-tapping screw easy to detach, which comprises a screw head, a screw rod, a cone and a handle, wherein a first convex strip is arranged in the middle of the screw head, second convex strips are arranged on two sides of the first convex strip, the first convex strip and the second convex strip are the same, grooves are arranged at two ends of the lower side of the handle, the grooves are matched with the first convex strips, a connecting rod is arranged at the lower end of the screw head, an external thread is arranged on the connecting rod, the screw rod comprises a smooth part and a screw thread part, a connecting groove is arranged at the upper end of the smooth part, an internal thread is arranged on the connecting groove, the connecting rod and the connecting groove are rotationally connected with the internal thread through the external thread, a screw thread part is arranged at the lower end of the smooth part, a plurality of self-tapping threads are arranged on the screw part, the screw, the lower extreme of second screw thread portion is equipped with the centrum, upper end a week of centrum is equipped with the connection piece, the lower extreme of connection piece is equipped with a plurality of blade, the lower extreme of blade is equipped with the cutting edge, the cutting edge sets up perpendicularly downwards.

Preferably, the first convex strip and the second convex strip are hexagons, the groove is a hexagonal groove, the handle is T-shaped, a rubber sleeve is further arranged on the periphery of the outer wall of the handle, the distance between the grooves is larger than the radius of the screw head, the distance between the grooves is equal to the distance between the two second convex strips, and a holding strip is arranged at the upper end of the handle.

Preferably, the length of the smooth portion is one fourth to one fifth of the length of the threaded portion, and the length of the first threaded portion is three fifths to two thirds of the length of the second threaded portion.

Preferably, the upper end of the smooth part is provided with a convex ring, the width of the convex ring is one third to one half of the radius of the smooth part, the lower side of the convex ring is bonded with a sealing ring, the upper end of the smooth part is also provided with a plastic plug, the plastic plug is inserted into a connecting groove, the outer diameter of the plastic plug is matched with the inner diameter of the connecting groove, the length of the plastic plug is matched with that of the connecting groove, and the upper end of the plastic plug is provided with a lifting ring.

Preferably, the length of the cone is one fourth to one third of the length of the screw rod, the outer diameter of the connecting piece is smaller than or equal to the outer diameter of the screw rod, a plurality of chip removal holes are formed in the side edge of the connecting piece, chip removal grooves are formed above the chip removal holes, the number of the chip removal holes corresponds to the number of the blades one by one, the number of the blades is 2-4, and the length of the blades is one fourth to one third of the length of the cone.

The invention has the beneficial effects that: according to the invention, the screw head is arranged and is in threaded connection with the screw rod, when the self-tapping screw is installed, the screw head is connected with the screw rod, the self-tapping screw is rotatably installed by using the handle, after the installation is finished, the screw head is detached, and the plastic plug is inserted into the connecting groove, so that the rusting caused by long installation time is prevented, and the disassembly difficulty is reduced; the detachability of the screw head is suitable for the connection of a plurality of screw rods, and during manufacturing, fewer screw heads can be produced to help the screw rods to be installed, so that the production cost is reduced; set up the connection piece in the upper end of centrum, the lower extreme of connection piece sets up a plurality of blade, and during the installation, a plurality of blade can cut apart a part with the target object, forms the saw-dust for the target object softens, just so can prevent that the target object from causing the fracture when rotatory.

The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a first schematic structural view of a quick release self-tapping screw according to the present invention;

FIG. 2 is a schematic structural view of a detachable self-tapping screw according to the present invention

FIG. 3 is a schematic view of the handle of the present invention;

FIG. 4 is a schematic view of the screw head and shaft of the present invention in a disassembled configuration;

FIG. 5 is a schematic view of the plastic plug of the present invention in its configuration when inserted into the shaft of a screw;

FIG. 6 is a top view of the shaft of the screw of the present invention.

In the figure: 1-screw head, 2-screw rod, 3-cone, 4-handle, 11-first convex strip, 12-second convex strip, 13-connecting rod, 21-smooth part, 22-thread part, 23-self-tapping tooth, 31-connecting piece, 41-groove, 42-rubber sleeve, 43-holding strip, 211-connecting groove, 212-convex ring, 213-sealing ring, 214-plastic plug, 215-lifting ring, 221-self-tapping thread, 222-first thread part, 223-second thread part, 311-blade, 312-blade, 313-chip-removing hole and 314-chip-removing groove.

[ detailed description ] embodiments

Referring to fig. 1 to 6, the invention relates to a self-tapping screw easy to detach, which comprises a screw head 1, a screw rod 2, a vertebral body 3 and a handle 4, wherein a first convex strip 11 is arranged in the middle of the screw head 1, second convex strips 12 are arranged on two sides of the first convex strip 11, the first convex strip 11 and the second convex strip 12 are identical, grooves 41 are arranged on two ends of the lower side of the handle 4, the grooves 41 are matched with the first convex strips 11, a connecting rod 13 is arranged at the lower end of the screw head 1, an external thread is arranged on the connecting rod 13, the screw rod 2 comprises a smooth part 21 and a thread part 22, a connecting groove 211 is arranged at the upper end of the smooth part 21, an internal thread is arranged on the connecting groove 211, the connecting rod 13 and the connecting groove 211 are rotatably connected with the internal thread through the external thread, the thread part 22 is arranged at the lower end, the thread part 22 comprises a first thread part 222 and a second thread part 223, a plurality of self-tapping teeth 23 are arranged on self-tapping threads 221 on the second thread part 223, a vertebral body 3 is arranged at the lower end of the second thread part 223, a connecting piece 31 is arranged on a circle of the upper end of the vertebral body 3, a plurality of blades 311 are arranged at the lower end of the connecting piece 31, a cutting edge 312 is arranged at the lower end of each blade 311, the cutting edge 312 is vertically arranged downwards, the first convex strip 11 and the second convex strip 12 are both hexagonal, the groove 41 is a hexagonal groove, the handle 4 is T-shaped, a rubber sleeve 42 is further arranged on a circle of the outer wall of the handle 4, the distance between the central points of the two grooves 41 at the lower end of the handle 4 is larger than the radius of the screw head 1, the distance between the two grooves 41 at the lower end of the handle 4 is equal to the distance between the two second, the length of the smooth part 21 is one fourth to one fifth of the length of the thread part 22, the length of the first thread part 222 is three fifths to two thirds of the length of the second thread part 223, the upper end of the smooth part 21 is provided with a convex ring 212, the width of the convex ring 212 is one third to one half of the radius of the smooth part 21, the lower side of the convex ring 212 is adhered with a sealing ring 213, the upper end of the smooth part 21 is also provided with a plastic plug 214, the plastic plug 214 is inserted into the connecting groove 211, the outer diameter of the plastic plug 214 is matched with the inner diameter of the connecting groove 211, the length of the plastic plug 214 is matched with the length of the connecting groove 211, the upper end of the plastic plug 214 is provided with a lifting ring 215, the length of the vertebral body 3 is one fourth to one third of the length of the screw rod 2, the outer diameter of the connecting piece 31 is less than or equal to the outer diameter of the screw rod 2, the, the chip flutes 314 are arranged above the chip holes 313, the number of the chip holes 313 corresponds to the number of the blades 311 one by one, the number of the blades 311 is 2-4, and the length of the blades 311 is one fourth to one third of the length of the vertebral body 3.

During installation, the groove 41 on the right side of the handle 4 is buckled with the first convex strip 11, the self-tapping screw is rotatably installed, a part of a target object can be cut by the blades 311 to form wood chips, so that the target object is softened, the target object can be prevented from cracking during rotation, after the installation is completed, the groove 41 on the right side of the handle 4 is disconnected with the first convex strip 11, the grooves 41 on the two sides are buckled with the corresponding second convex strips 12 respectively, then the handle 4 is held to rotate to drive the screw head 1 to rotate to separate the screw head 1 from the screw rod 2, the plastic plug 214 is inserted into the connecting groove 211, the situation that the installation time is long and the rust is generated is avoided, and the disassembly difficulty is reduced; the detachability of the screw head 1 is suitable for connecting and installing a plurality of screw rods 2, and during manufacturing, fewer screw heads 1 can be produced to help the screw rods 2 to be installed, so that the production cost is reduced.

The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.