CN210013916U - Antirust and antiskid self-tapping screw - Google Patents

Abstract

The utility model discloses an antirust and antiskid self-tapping screw, which comprises a screw rod, a screw head, a self-tapping drill bit and a plurality of locking holographic bolts, wherein the screw rod is cylindrical, the surface of the screw rod is coiled and protruded with self-tapping threads, the lower end of the screw rod is provided with the self-tapping drill bit, the self-tapping drill bit and the screw rod are in an integrated structure, the upper end of the screw rod is provided with the screw head, the screw head is vertically provided with a plurality of thread cavities, the thread cavities are arranged in parallel relative to the screw rod, the locking holographic bolts which can be matched with the thread cavities are all arranged in the thread cavities, the locking holographic bolts are arranged downwards, the locking holographic bolts can be detachably connected with the thread cavities, the utility model discloses a thread cavity and a locking holographic bolt are arranged on the screw head of the self-tapping self-drilling screw, after the screw is screwed, the locking holographic bolt can be screwed, the top head of the locking holographic bolt can, the friction force is enhanced, and the looseness is effectively prevented.

Description

A kind of anti-rust and anti-skid self-tapping screw

【Technical field】

The utility model relates to the technical field of screws, in particular to the technical field of self-tapping and self-drilling screws with good anti-loosening effect.

【Background technique】

Screws are commonly found in machinery, electrical appliances and buildings. They are generally made of metal or plastic and are cylindrical in shape. The grooves engraved on the surface are called threads. The main function of screws is to join two objects, or to fix the position of an object. , the screw can usually be removed or re-tightened at will without compromising its efficiency. Generally, the diameter of the top of the screw is larger, and the common ones are round, square or regular hexagon. If the top is regular hexagon, you can turn the screw with a wrench. If the top is round, there will also be grooves on the front of the top, which is convenient for use screwdriver to turn the screw. The most common grooves are one-shaped, cross-shaped and square, and there are other shapes. Self-drilling self-tapping screws are one of the screws. This kind of screw has a drill tail tip, and the tip is named after a twist drill bit. During assembly, the screw can drill the center hole by itself, and then use the adjacent threaded part to self-tapping and extrude the matching thread in the hole on the carrier, so it is called a self-drilling self-tapping screw. Self-tapping screws are mostly used for walls or wood. On the other hand, the hardness of the wall and the wood is low. After a long time of use, the gap between the self-tapping screw and the screw hole will become larger and larger. The screw is easy to loosen, and the connection is unstable and unsafe.

【Content of utility model】

The purpose of the utility model is to solve the problems in the prior art, and proposes an anti-rust and anti-skid self-tapping screw, which can use the locking holographic bolt to enhance the friction force between the self-tapping screw and the carrier, and effectively prevent loosening.

In order to achieve the above purpose, the utility model proposes an anti-rust and anti-skid self-tapping screw, which includes a screw rod, a screw head, a self-tapping drill bit, and several locking holographic bolts. There is a self-tapping thread, the lower end of the screw is provided with a self-tapping drill bit, the self-tapping drill bit and the screw rod are integrally formed, the upper end of the screw rod is provided with a screw head, and the screw head is vertically arranged on the screw head. There are several threaded cavities, the threaded cavities are arranged in parallel with the screw, and the threaded cavities are provided with locking holographic bolts that can cooperate with the threaded cavities. The locking holographic bolt is detachably connected with the threaded cavity.

Preferably, the cross section of the screw head is a regular hexagon or a regular quadrilateral, and the outer ring of the screw head is provided with an outer wall that can be matched with a bayonet wrench.

Preferably, the screw head is provided with a plurality of anti-skid teeth on the end surface of the screw.

Preferably, there are at least two threaded cavities, the threaded cavities are equidistantly divided around the center of the screw head, and the threaded cavities are provided with locking holographic bolts.

Preferably, the upper end of the threaded cavity is provided with a threaded cavity cover that can be matched with the threaded cavity cover, and the threaded cavity cover and the threaded cavity are detachably clamped.

Preferably, the length of the locking holographic bolt is less than the thickness of the screw head, and the top of the locking holographic bolt is provided with an Allen wrench bayonet or a Phillips screwdriver bayonet or a slotted screwdriver bayonet, the locking The lower end of the holographic bolt is provided with a head.

Preferably, the screw, the screw head and the self-tapping drill are coaxially arranged, and the screw, the screw head and the self-tapping drill are integrally formed.

The beneficial effects of the anti-rust and anti-skid self-tapping screw of the present invention: the present invention provides a thread cavity and a locking holographic bolt on the screw head of the self-tapping self-drilling screw. After the screw is tightened, the locking holographic bolt can be Tighten and lock the head of the holographic bolt against the surface of the carrier to enhance friction and effectively prevent loosening.

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

【Description of drawings】

1 is a schematic front view of the structure of a rust-proof and anti-skid self-tapping screw of the present invention;

Fig. 2 is the front sectional view of a kind of anti-rust and anti-skid self-tapping screw of the present invention;

FIG. 3 is a top view of the structure of a rust-proof and anti-skid self-tapping screw according to the present invention.

In the picture: 1- Screw, 2- Screw head, 3- Self-tapping drill bit, 4- Locking holographic bolt, 11- Self-tapping thread, 21- Thread cavity, 22- Anti-slip tooth, 211- Thread cavity cover.

【Detailed ways】

Referring to Figure 1, Figure 2 and Figure 3, a rust-proof and anti-skid self-tapping screw of the present invention includes a screw rod 1, a screw head 2, a self-tapping drill bit 3, and several locking holographic bolts 4. The screw rod 1 is a cylindrical type , the surface of the screw 1 is coiled and protruded with a self-tapping thread 11, the lower end of the screw 1 is provided with a self-tapping drill 3, the self-tapping drill 3 and the screw 1 are integrally formed, and the screw 1 The upper end is provided with a screw head 2, the screw head 2 is vertically provided with a number of thread cavities 21, the thread cavities 21 are arranged in parallel with the screw 1, and the thread cavities 21 are provided with thread cavities that can be connected with the screw cavities. 21. The locking holographic bolts 4 are matched, the locking holographic bolts 4 are arranged downward, the locking holographic bolts 4 are detachably connected with the threaded cavity 21, and the cross-section of the screw head 2 is a regular hexagon or Regular quadrilateral, the outer ring of the screw head 2 is provided with an outer wall that can be matched with a bayonet wrench, the screw head 2 is provided with a number of anti-skid teeth 22 on the end surface of the screw head 1, and the thread cavity 21 has at least two Each of the threaded cavities 21 is equally spaced around the center of the screw head 2, the threaded cavities 21 are provided with locking holographic bolts 4, and the upper end of the threaded cavity 21 is provided with a threaded cavity that can be matched with it. Cover 211, the threaded cavity cavity cover 211 and the threaded cavity 21 are detachably connected, the length of the locking holographic bolt 4 is less than the thickness of the screw head 2, and the top of the locking holographic bolt 4 is provided with a hexagon socket. Wrench bayonet or Phillips screwdriver bayonet or flat-blade screwdriver bayonet, the lower end of the locking holographic bolt 4 is provided with a plug 41, the screw 1, the screw head 2, and the self-tapping drill bit 3 are coaxially arranged. The screw 1, the screw head 2 and the self-tapping drill bit 3 are integrally formed.

The working process of the utility model:

In the working process of the anti-rust and anti-skid self-tapping screw of the utility model, the self-tapping drill bit 3 is aligned with the position to be fixed, the screw head 2 is clamped by a wrench to screw the screw, and the self-tapping bit 3 is tapped out of the screw fixing place. Need holes, continue to screw until the self-drilling self-tapping screw is tightened. After the screw is tightened, the locking holographic bolt 4 in the screw head 2 is also tightened, and the holographic bolt 4 is locked. The plug 41 of the locking holographic bolt 4 can withstand the carrier The surface of the screw cavity 21 can be covered with the screw cavity cavity cover 211 after the holographic bolt 4 is locked.

The above embodiment is an illustration of the present utility model, not a limitation of the present utility model. Any simple transformation scheme of the present utility model belongs to the protection scope of the present utility model.

Claims (7)

1. The utility model provides an antirust antiskid self-tapping screw which characterized in that: including screw rod (1), spiral shell head (2), self tapping drill (3), a plurality of locking holographic bolt (4), screw rod (1) be the cylinder type, screw rod (1) surface coil the protrusion and be equipped with self tapping screw thread (11), screw rod (1) lower extreme be equipped with self tapping drill (3), self tapping drill (3) and screw rod (1) be the integrated into one piece structure, screw rod (1) upper end be equipped with spiral shell head (2), spiral shell head (2) go up the vertical a plurality of screw thread chambeies (21) that are equipped with, screw thread chamber (21) and screw rod (1) relative parallel arrangement, screw thread chamber (21) in all be equipped with can with screw thread chamber (21) complex locking holographic bolt (4), locking holographic bolt (4) set up down, locking holographic bolt (4) can dismantle with screw thread chamber (21) and be connected.

2. A rust-inhibiting anti-slip self-tapping screw as defined in claim 1, wherein: the cross section of the screw head (2) is regular hexagon or regular quadrangle, and the outer ring of the screw head (2) is provided with an outer wall which can be matched with a bayonet wrench.

3. A rust-inhibiting anti-slip self-tapping screw as defined in claim 1, wherein: the screw head (2) is provided with a plurality of anti-skid clamping teeth (22) towards the end surface of the screw rod (1).

4. A rust-inhibiting anti-slip self-tapping screw as defined in claim 1, wherein: the thread cavity (21) have two at least, thread cavity (21) around the central equidistance subsection of spiral shell head (2), thread cavity (21) in all be equipped with locking holographic bolt (4).

5. A rust-inhibiting anti-slip self-tapping screw as defined in claim 1, wherein: the upper end of the threaded cavity (21) is provided with a threaded cavity cover (211) matched with the threaded cavity, and the threaded cavity cover (211) and the threaded cavity (21) can be detachably clamped.

6. A rust-inhibiting anti-slip self-tapping screw as defined in claim 1, wherein: the length of locking holographic bolt (4) be less than the thickness of spiral shell head (2), locking holographic bolt (4) top be equipped with hexagon socket wrench bayonet socket or cross screwdriver bayonet socket or a word screwdriver bayonet socket, locking holographic bolt (4) lower extreme be equipped with top (41).

7. A rust-inhibiting anti-slip self-tapping screw as defined in claim 1, wherein: the screw rod (1), the screw head (2) and the self-tapping drill bit (3) are coaxially arranged, and the screw rod (1), the screw head (2) and the self-tapping drill bit (3) are of an integrally formed structure.

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