Wear-resistant and corrosion-resistant fastener

Abstract

The utility model provides an anti-abrasion and anti-corrosion fastener, and belongs to the technical field of fasteners. The anti-abrasion and anti-corrosion fastener comprises a self drilling screw and a protection assembly. A zinc-chromium coating is arranged on the outer portion of the self-drilling screw, and a self-repairing anti-corrosion coating is arranged on the outer portion of the zinc-chromium coating. The protection assembly comprises a first protection cover, a second protection cover, a spring piece and a clamping block, the first protection cover is rotationally arranged on the head portion of the self-drilling screw in a sleeving mode, when the self-drilling screw is used, double protection is conducted on the self-drilling screw through a zinc-chromium coating and a self-repairing anti-corrosion coating, the abrasion resistance and corrosion resistance of the self-drilling screw are high, and the service life of the self-drilling screw is prolonged. When the self drilling screw needs to be used, the first protective cover and the second protective cover are matched and arranged outside the head of the self drilling screw in a sleeving mode, and the head of the self drilling screw is isolated and protected through the first protective cover and the second protective cover, so that the head of the self drilling screw is not prone to rusting.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fasteners, in particular, relates to a kind of anti-wear corrosion-resistant fastener. BACKGROUND

[0002] Fastener is used for fastening connection and is widely used a kind of mechanical parts, there are many kinds and very common, among them, drill screw is a very common fastener, drill screw is the screw front end has self-tapping drill head, drill screw tail is in the form of drill tail or sharp tail, without auxiliary processing, can be directly drilled, tapped, locked on the setting material, base material, greatly saves construction time.

[0003] Traditional drill screw overall protection structure is relatively simple, only single coating is arranged on the surface of screw for protection, which limits the anti-wear corrosion resistance of drill screw, and after drill screw is fixed, the head of drill screw is directly exposed to the outside, and the head of drill screw is prone to rust. CONTENT OF THE INVENTION

[0004] In order to make up for the above shortcomings, the present application provides a kind of anti-wear corrosion-resistant fastener, to improve the anti-wear corrosion resistance of drill screw is limited, the head of drill screw is prone to rust.

[0005] The present application provides a kind of anti-wear corrosion-resistant fastener, including drill screw and protection assembly.

[0006] The outer part of the drill screw is provided with zinc-chromium coating, and the outer part of the zinc-chromium coating is provided with self-repairing anticorrosion coating.

[0007] The protection assembly includes a first protective cover, a second protective cover, a spring sheet and a clamping block, the first protective cover is rotatably sleeved on the head of the drill screw, the inner part of the first protective cover is provided with a limiting ring, the ring body of the limiting ring is provided with a through opening, one side of the first protective cover is provided with a sealing ring, one side of the sealing ring is provided with a first elastic sealing gasket, the second protective cover is slidably sleeved on the outer part of the first protective cover, the second protective cover is rotatably sleeved on the outer part of the first protective cover, the spring sheet is connected to the inner part of the second protective cover, the clamping block is connected with the spring sheet, the clamping block is slidably clamped on one side of the limiting ring, the clamping block is provided corresponding to the through opening, the outer part of the first protective cover, the second protective cover and the sealing ring is provided with zinc-chromium coating and self-repairing anticorrosion coating.

[0008] In a specific embodiment, the side of the limiting ring away from the clamping block is inclined, and the through opening is provided with two, and the two through openings are symmetrically arranged.

[0009] In a specific embodiment, the outer wall of the second protective cover is provided with rotating blocks, the rotating blocks are provided with a plurality of blocks, the plurality of blocks are symmetrically arranged, and the outer part of each of the plurality of blocks is provided with a zinc-chromium coating and a self-repairing anticorrosive coating.

[0010] In a specific embodiment, the inner wall of one side of the second protective cover is provided with elastic members, one end of the elastic members abuts against the cover wall of the first protective cover, and the outer wall of one side of the second protective cover is provided with a label plaque.

[0011] In a specific embodiment, the elastic members are provided with two, the two elastic members are symmetrically arranged, one end of each of the two elastic members abuts against the cover wall of the first protective cover, and the two elastic members are springs.

[0012] In a specific embodiment, one end of the second protective cover is provided with a second elastic sealing gasket, the second elastic sealing gasket is sleeved on the outside of the first protective cover, and the inner wall of the second elastic sealing gasket abuts against the first protective cover.

[0013] In a specific embodiment, the spring pieces are provided with two, one end of each of the two spring pieces is fixedly connected with the inner wall of one side of the second protective cover, and the two spring pieces are symmetrically arranged.

[0014] In a specific embodiment, the clamping blocks are provided with two, the two clamping blocks are fixedly connected with the two spring pieces respectively, the two clamping blocks are slidingly clamped on one side of the limiting ring, and the two clamping blocks are correspondingly arranged with the two through openings respectively.

[0015] The utility model discloses a kind of anti-wear corrosion-resistant fasteners, when using, and then through zinc-chromium coating and self-repairing anticorrosive coating double protection to drill screw, and then make the anti-wear corrosion-resistant performance of drill screw be higher, when needing to use drill screw, second protective cover can be rotated, can drive clamping block rotation towards through opening, clamping block moves to through opening, and then second protective cover can be moved in direction away from first protective cover, and then second protective cover can be disassembled, and then drill screw can be used, when drill screw fastening workpiece, the head of drill screw will be abutted with first protective cover, sealing ring and first elastic sealing gasket will be abutted with workpiece, and then the head between drill screw and workpiece can be sealed, rainwater etc. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 is a first perspective view of the anti-wear and corrosion-resistant fastener provided by the embodiments of the present application;

[0018] Figure 2 is a second perspective view of the anti-wear and corrosion-resistant fastener provided by the embodiments of the present application;

[0019] Figure 3 is a third perspective view of the anti-wear and corrosion-resistant fastener provided by the embodiments of the present application;

[0020] Figure 4 is a cross-sectional view of the protection assembly provided by the embodiments of the present application;

[0021] Figure 5 is a cross-sectional view of the anti-wear and corrosion-resistant fastener provided by the embodiments of the present application.

[0022] In the drawings: 100 - drill tail screw; 200 - protection assembly; 210 - first protection cover; 211 - limiting ring; 212 - sealing ring; 213 - through hole; 214 - first elastic sealing washer; 220 - second protection cover; 221 - rotating block; 222 - elastic member; 223 - label; 224 - second elastic sealing washer; 230 - spring sheet; 240 - clamping block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described below in combination with the drawings in the embodiments of the present application.

[0024] In order to make the purposes, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] Please refer to Figure 1 The present application provides an anti-wear and corrosion-resistant fastener, which comprises a drill tail screw 100 and a protection assembly 200.

[0026] Referring to Figures 1-3 The outer part of the drill screw 100 is provided with a zinc-chromium coating, the outer part of the zinc-chromium coating is provided with a self-repairing anticorrosive coating, the self-repairing anticorrosive coating can be coated with a self-repairing polyurethane coating, and the zinc-chromium coating can be subjected to surface treatment according to needs before the self-repairing polyurethane coating is coated: the roughness of the surface of the zinc-chromium coating can be increased by sanding.

[0027] Referring to Figures 1-5 The protection assembly 200 comprises a first protective cover 210, a second protective cover 220, spring sheets 230 and clamping blocks 240, the first protective cover 210 is rotationally sleeved on the head of the drill screw 100, the first protective cover 210 can also slide on the drill screw 100, the inner part of the first protective cover 210 is provided with a limiting ring 211, the ring body of the limiting ring 211 is provided with through openings 213, the through openings 213 are provided in two, the two through openings 213 are symmetrically arranged, one side of the first protective cover 210 is provided with a sealing ring 212, one side of the sealing ring 212 is provided with a first elastic sealing gasket 214.

[0028] In this embodiment, the second protective cover 220 is slidably sleeved on the outer part of the first protective cover 210, and the second protective cover 220 is rotationally sleeved on the outer part of the first protective cover 210, and the second protective cover 220 can slide and rotate on the outer part of the first protective cover 210.

[0029] In the specific arrangement, the outer wall of the second protective cover 220 is provided with rotating blocks 221, the rotating blocks 221 are provided in a plurality of blocks, the plurality of rotating blocks 221 are symmetrically arranged, the outer parts of the plurality of rotating blocks 221 are provided with zinc-chromium coatings and self-repairing anticorrosive coatings, the outer part of the zinc-chromium coating is coated with the self-repairing anticorrosive coating, the self-repairing anticorrosive coating can be selected from a self-repairing polyurethane coating, the inner wall of one side of the second protective cover 220 is provided with elastic members 222, one end of the elastic members 222 abuts against the cover wall of the first protective cover 210, the elastic members 222 are provided in two, the two elastic members 222 are symmetrically arranged, one end of the two elastic members 222 abuts against the cover wall of the first protective cover 210, and the two elastic members 222 are both springs.

[0030] In this application, one side of the second protective cover 220 is provided with a label nameplate 223, the use method of the anti-wear and corrosion-resistant fastener can be printed or written on the label nameplate 223, one end of the second protective cover 220 is provided with a second elastic sealing gasket 224, the second elastic sealing gasket 224 is sleeved on the outer part of the first protective cover 210, the inner wall of the second elastic sealing gasket 224 abuts against the first protective cover 210, the spring sheets 230 are connected to the inner part of the second protective cover 220, the spring sheets 230 are provided in two, one end of the two spring sheets 230 is fixedly connected to the inner wall of one side of the second protective cover 220, and the two spring sheets 230 are symmetrically arranged.

[0031] In the embodiment, the clamping blocks 240 are connected with the spring sheets 230, the clamping blocks 240 are slidingly clamped on one side of the limiting ring 211, the side of the limiting ring 211 away from the clamping blocks 240 is obliquely arranged, the clamping blocks 240 are provided in two, the two clamping blocks 240 are fixedly connected with the two spring sheets 230 respectively, the two clamping blocks 240 are slidingly clamped on one side of the limiting ring 211 respectively, the two clamping blocks 240 are arranged corresponding to the two through holes 213 respectively, and the clamping blocks 240 can pass through the inside of the through holes 213.

[0032] In the specific arrangement, the outer parts of the first protective cover 210, the second protective cover 220 and the sealing ring 212 are provided with zinc-chromium coating and self-repairing anticorrosive coating, the outer part of the zinc-chromium coating is coated with the self-repairing anticorrosive coating, and the self-repairing anticorrosive coating can be self-repairing polyurethane paint.

[0033] Specifically, the working principle of the anti-wear and corrosion-resistant fastener is as follows: in use, the surface of the drill screw 100 is provided with zinc-chromium coating, the outer part of the zinc-chromium coating is provided with self-repairing anticorrosive coating, thereby the drill screw 100 is doubly protected by the zinc-chromium coating and the self-repairing anticorrosive coating, so that the anti-wear and corrosion-resistant performance of the drill screw 100 is higher, when the drill screw 100 needs to be used, the second protective cover 220 can be rotated, the second protective cover 220 drives the spring sheet 230 and the clamping block 240 to rotate, thereby the clamping block 240 can be driven to rotate towards the through hole 213, when the clamping block 240 moves to the through hole 213, the clamping block 240 loses the limitation of the limiting ring 211, under the action of the elastic member 222, the clamping block 240 can pass through the through hole 213, thereby the second protective cover 220 can be moved away from the first protective cover 210, thereby the second protective cover 220 can be disassembled, thereby the head of the drill screw 100 is exposed, then the drill screw 100 can be used, when the drill screw 100 fastens the workpiece, the head of the drill screw 100 abuts against the first protective cover 210, the sealing ring 212 and the first elastic sealing washer 214 on one side of the first protective cover 210 abut against the workpiece, thereby the head of the drill screw 100 and the workpiece are sealed, rainwater and the like can be prevented from penetrating into the thread groove of the drill screw 100, thereby the drill screw 100 is less likely to rust, then the second protective cover 220 can be slidingly sleeved on the outside of the first protective cover 210 again, the clamping block 240 is away from the through hole 213, when the clamping block 240 passes through the limiting ring 211, the spring sheet 230 is deformed to make the clamping block 240 pass through the limiting ring 211, thereby the clamping block 240 can be clamped on one side of the limiting ring 211, the first protective cover 210 and the second protective cover 220 are cooperatively sleeved on the outside of the head of the drill screw 100, the head of the drill screw 100 is isolated and protected by the first protective cover 210 and the second protective cover 220, so that the head of the drill screw 100 is less likely to rust.

[0034] The above merely provides an example of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0035] The above merely provides an example of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0035] The above merely provides an example of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

Claims

1. A wear-resistant corrosion-resistant fastener, characterized by, The application relates to a drill screw (100) and a protection assembly (200) thereof. The drill screw (100) is externally provided with a zinc-chromium coating, and the outer part of the zinc-chromium coating is externally provided with a self-repairing anticorrosion coating. The protection assembly (200) comprises a first protection cover (210), a second protection cover (220), a spring sheet (230) and a clamping block (240), the first protection cover (210) is rotationally sleeved on the head of the drill screw (100), the inner part of the first protection cover (210) is provided with a limiting ring (211), the ring body of the limiting ring (211) is provided with a through opening (213), one side of the first protection cover (210) is provided with a sealing ring (212), one side of the sealing ring (212) is provided with a first elastic sealing gasket (214), the second protection cover (220) is slidably sleeved on the outer part of the first protection cover (210), the second protection cover (220) is rotationally sleeved on the outer part of the first protection cover (210), the spring sheet (230) is connected to the inner part of the second protection cover (220), the clamping block (240) is connected with the spring sheet (230), the clamping block (240) is slidably clamped on one side of the limiting ring (211), the clamping block (240) is correspondingly arranged with the through opening (213), and the outer parts of the first protection cover (210), the second protection cover (220) and the sealing ring (212) are all provided with zinc-chromium coatings and self-repairing anticorrosion coatings.

2. A corrosion and galling resistant fastener according to claim 1 wherein, The side of the limiting ring (211) far from the clamping block (240) is obliquely arranged, and the through opening (213) is provided with two through openings (213) which are symmetrically arranged.

3. A corrosion and galling resistant fastener according to claim 2 wherein, The outer wall of the second protection cover (220) is provided with rotating blocks (221), the rotating blocks (221) are provided with a plurality of blocks, the rotating blocks (221) are symmetrically arranged, and the outer parts of the rotating blocks (221) are all provided with zinc-chromium coatings and self-repairing anticorrosion coatings.

4. A corrosion and galling resistant fastener according to claim 1 wherein, The inner wall of one side of the second protection cover (220) is provided with elastic members (222), one end of the elastic members (222) abuts against the cover wall of the first protection cover (210), and the outer wall of one side of the second protection cover (220) is provided with a label nameplate (223).

5. A corrosion and galling resistant fastener according to claim 4 wherein, The elastic members (222) are provided with two elastic members (222) which are symmetrically arranged, and one end of the elastic members (222) abuts against the cover wall of the first protection cover (210), and the elastic members (222) are all springs.

6. A corrosion and galling resistant fastener according to claim 1 wherein, One end of the second protection cover (220) is provided with a second elastic sealing gasket (224), the second elastic sealing gasket (224) is sleeved on the outer part of the first protection cover (210), and the inner wall of the second elastic sealing gasket (224) abuts against the first protection cover (210).

7. A corrosion and galling resistant fastener according to claim 2 wherein, The spring sheet (230) is provided with two spring sheets (230) which are fixedly connected with the inner wall of one side of the second protection cover (220) and are symmetrically arranged.

8. A corrosion and wear resistant fastener according to claim 7, wherein, The card blocks (240) are provided with two, two of the card blocks (240) are fixedly connected with two spring sheets (230) respectively, two of the card blocks (240) are slidably clamped on one side of the limiting ring (211), and two of the card blocks (240) are provided correspondingly with two through openings (213) respectively.

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