CN220687791U

CN220687791U - Anticorrosive self-tapping bolt

Info

Publication number: CN220687791U
Application number: CN202321455798.XU
Authority: CN
Inventors: 董一青
Original assignee: Dongyang Precision Screw Dongguan Co ltd
Current assignee: Dongyang Precision Screw Dongguan Co ltd
Priority date: 2023-06-08
Filing date: 2023-06-08
Publication date: 2024-03-29
Anticipated expiration: 2033-06-08

Abstract

The utility model discloses an anti-corrosion self-tapping bolt, which comprises a bolt cap, wherein the lower end of the bolt cap is fixedly connected with a bolt, the surface of the bolt cap is fixedly provided with an anti-corrosion coating layer, the bolt cap can be prevented from being corroded and damaged in the long-time use process, a first mounting groove is formed in the bolt cap, a second mounting groove is formed in the bolt cap at the position corresponding to the first mounting groove, the lower end of the bolt is fixedly connected with a self-tapping drill bit, and the lower end of the bolt is provided with a self-locking hole. This anticorrosive self-tapping bolt, through at the waterproof circle of bolt cap lower extreme fixedly connected with, a plurality of tooth form grooves have been seted up to waterproof circle lower extreme simultaneously, waterproof circle can synchronous rotation when self-tapping bolt is rotatory, waterproof circle can follow self-tapping bolt and imbed by the fastener inside under the effect of external force, when the bolt runs into rainwater or domestic water and splashes, waterproof circle can play the effect of separation, can not let rainwater contact stud, thereby avoid the stud to use for a long time to be corroded, increase self-tapping bolt's life.

Description

Anticorrosive self-tapping bolt

Technical Field

The utility model belongs to the technical field of bolts, and particularly relates to an anti-corrosion self-tapping bolt.

Background

The self-tapping bolt is a bolt with a drill bit, is constructed by a special electric tool, is drilled, tapped, fixed and locked at one time, is a most common fastener and is applied to various fields of human production and life.

The existing bolts have the following problems:

1. because self-tapping bolts are often exposed outdoors, in the use process, when rainwater or domestic water splashes onto the bolts, water can flow in along gaps between the studs and the fixed parts, so that the bolts are corroded, the bolts are often corroded seriously, and inconvenience is brought to disassembly and maintenance.

2. The prior bolt prevents the loosening of the fastening screw, mainly adopts measures such as a spring washer, a stop penetration cotter pin, a butt nut and the like, and the spring washer and the butt nut can play a certain anti-loosening and locking role only in a fastening state. But the connection is often loosened under the action of strong alternating load and impact load after long-time vibration impact

Disclosure of Invention

The utility model aims to provide an anti-corrosion self-tapping bolt, which aims to solve the technical problems in the background technology.

In order to achieve the above purpose, the specific technical scheme of the utility model is as follows: an anticorrosive self-tapping bolt, includes bolt cap, its characterized in that: the bolt cap is characterized in that the bolt is fixedly connected with the lower end of the bolt cap, the anti-corrosion coating is fixedly arranged on the surface of the bolt cap, the bolt cap can be prevented from being corroded and damaged in the long-time use process, a first mounting groove is formed in the bolt cap, a second mounting groove is formed in the bolt cap and corresponds to the first mounting groove, the lower end of the bolt is fixedly connected with a self-tapping drill bit, a self-locking hole is formed in the lower end of the bolt, internal threads are formed in the second mounting groove, mounting cavities are respectively formed in two sides of the lower end of the second mounting groove, a waterproof ring is fixedly connected with the lower end of the bolt cap, rainwater is prevented from flowing into the corroded bolt from a connecting gap in the bolt use process, and a plurality of toothed grooves are fixedly connected with the lower end of the waterproof ring.

Preferably, one end of the self-locking hole penetrates through the second mounting groove and extends to the other end of the stud, and two self-locking blocks are movably arranged in the self-locking hole.

Preferably, the taper block is fixedly connected with one end of the self-locking block, the taper block is used for enabling the self-locking block to be embedded into the fixed piece, the end, away from the taper block, of the self-locking block is fixedly connected with two limiting blocks, and the limiting blocks can prevent from being separated from the studs in the moving process of the automatic locking block.

Preferably, two installation cavities are formed in the stud, a spring is fixedly connected in each installation cavity, one end of each spring is fixedly connected with a clamping block, and the springs can push the clamping blocks to move outwards when the surfaces of the clamping blocks are not in contact with the surfaces of the moving blocks.

Preferably, the second mounting groove is connected with a threaded rod through an internal thread, the lower end of the inside of the second mounting groove is movably connected with a moving block, and the two clamping blocks are positioned in the middle of the surface of the moving block.

The anti-corrosion self-tapping bolt has the following advantages:

1. this anticorrosive self-tapping bolt, through at the waterproof circle of bolt cap lower extreme fixedly connected with, a plurality of tooth form grooves have been seted up to waterproof circle lower extreme simultaneously, waterproof circle can synchronous rotation when self-tapping bolt is rotatory, waterproof circle can follow self-tapping bolt and imbed by the fastener inside under the effect of external force, when the bolt runs into rainwater or domestic water and splashes, waterproof circle can play the effect of separation, can not let rainwater contact stud, thereby avoid the stud to use for a long time to be corroded, increase self-tapping bolt's life.

2. This anticorrosive self-tapping bolt, through being provided with from the locking piece at the inside activity of auto-lock hole, simultaneously at from locking piece upper end swing joint has the movable block, second mounting groove is inside to have the threaded rod through internal thread threaded connection, when rotating the bolt cap and making the bolt imbed to by fixed work piece inside, rotate the threaded rod, make the threaded rod move down in the second mounting groove, continue to rotate the threaded rod when the threaded rod contacts the movable block, make the threaded rod drive the movable block and move down, continue to rotate the threaded rod after the gap between two auto-lock pieces is gone into to the movable block lower extreme card, the movable block can extrude two auto-lock pieces and outwards remove this moment, because two auto-lock piece one end all fixedly connected with toper piece respectively, so the toper piece can imbed by the mounting in the city that the auto-lock piece removed, when the movable block upper surface moves to the chucking piece lower surface, until chucking piece lower surface contacts with the movable block upper surface, play the effect that the restriction movable block removed, thereby accomplish the auto-lock, thereby stability after fixing has been improved, maintenance cost is reduced, the use life is improved, and safety and reliability has been had the effect of preventing dismantlement.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the whole structure of an anti-corrosive self-tapping bolt according to the present utility model;

FIG. 2 is a sectional view showing the construction of a self-tapping bolt for corrosion protection according to the present utility model;

FIG. 3 is a schematic view of the internal thread structure of a self-tapping screw with corrosion resistance according to the present utility model;

fig. 4 is an enlarged view of the structure at a in fig. 2.

The figure indicates: 1. a bolt cap; 2. a peg; 3. a first mounting groove; 4. a waterproof ring; 5. tooth-shaped grooves; 6. a self-tapping drill bit; 7. self-locking holes; 8. an anti-corrosion coating; 9. a second mounting groove; 10. a threaded rod; 11. an internal thread; 12. a moving block; 13. a self-locking block; 14. a conical block; 15. a limiting block; 16. a spring; 17. a mounting cavity; 18. and clamping the block.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in numerous different ways without departing from the spirit or scope of the embodiments of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In the description of the embodiments of the present utility model, it should be understood that the terms "length," "vertical," "horizontal," "top," "bottom," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the embodiments of the present utility model and to simplify the description, rather than to indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

The following disclosure provides many different implementations, or examples, for implementing different configurations of embodiments of the utility model. In order to simplify the disclosure of embodiments of the present utility model, components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the present utility model. Furthermore, embodiments of the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed.

For a better understanding of the objects, structure and function of the utility model, a further detailed description of the utility model is provided below with reference to the accompanying drawings.

As shown in fig. 1-4, the anti-corrosion tapping bolt comprises a bolt cap 1, wherein the lower end of the bolt cap 1 is fixedly connected with a bolt 2, the surface of the bolt cap 1 is fixedly provided with an anti-corrosion coating 8, a first mounting groove 3 is formed in the bolt cap 1, a second mounting groove 9 is formed in the position, corresponding to the first mounting groove 3, in the bolt 2, the lower end of the bolt 2 is fixedly connected with a self-tapping drill bit 6, the lower end of the bolt 2 is provided with a self-locking hole 7, the inside of the second mounting groove 9 is provided with an internal thread 11, two sides of the lower end of the second mounting groove 9 are respectively provided with a mounting cavity 17, the lower end of the bolt cap 1 is fixedly connected with a waterproof ring 4, the lower end of the waterproof ring 4 is fixedly connected with a plurality of tooth-shaped grooves 5, the tooth-shaped grooves 5 rotate and extend to the other end of the bolt 2 under the action of external force, two self-locking blocks 13 are movably arranged in the bolt 7, one end of each self-locking block 13 is fixedly connected with a conical block 14, the two conical blocks 13 are far away from the second mounting groove 9, the two conical blocks 14 are connected with two threaded blocks 12 and are connected with two threaded rods 18, the lower ends of the threaded rod 10 are connected with two threaded rod blocks 18 in a moving way, the threaded rod 18 is connected with the threaded rod 18, and the threaded rod 18 is connected with the threaded rod 10 in the middle of the threaded rod 18, and the threaded rod 18 is connected with the threaded rod 18 through the threaded rod 10, and the threaded rod 18 is connected with the threaded rod 18.

The working principle of the self-tapping bolt is as follows: firstly, a bolt is held, a self-tapping drill bit 6 is aligned to a position to be fixed, a bolt cap 1 is rotated, the bolt cap 1 drives a bolt 2 to rotate, because the bolt 2 is fixedly connected with the self-tapping drill bit 6, the self-tapping drill bit 6 can also rotate simultaneously, the bolt 2 can be embedded into a fixed part under the action of external force, meanwhile, the lower end of the bolt cap 1 is fixedly connected with a waterproof ring 4, a plurality of tooth-shaped grooves 5 are formed at the lower end of the waterproof ring 4, the waterproof ring 4 synchronously rotates when the self-tapping bolt rotates, the waterproof ring 4 can be embedded into a fastened part following the self-tapping bolt under the action of external force, when the bolt meets rainwater or splashes of domestic water, the waterproof ring 4 plays a role of blocking, and rainwater cannot contact the bolt 2, so that the bolt 2 is prevented from being corroded when being used for a long time, the service life of the self-tapping bolt is prolonged, after the bolt 2 is completely embedded into the fixed part, a threaded rod 10 is rotated, the threaded rod 10 moves downwards in the second mounting groove 9, when the threaded rod 10 contacts the moving block 12, the threaded rod 10 continues to rotate the threaded rod 10, so that the threaded rod 10 drives the moving block 12 to move downwards until the lower end of the moving block 12 is clamped into a gap between the two self-locking blocks 13, the moving block 12 continues to rotate the threaded rod 10, at the moment, the two self-locking blocks 13 are extruded to move outwards respectively, because one ends of the two self-locking blocks 13 are fixedly connected with the conical blocks 14 respectively, the conical blocks 14 are embedded into the fixed piece in the passing of the moving of the self-locking blocks 13, when the upper surface of the moving block 12 moves to the lower end of the lower surface of the clamping block 18, the spring 16 pushes the clamping block 18 to move outwards until the lower surface of the clamping block 18 contacts with the upper surface of the moving block 12, the effect of limiting the moving block 12 is achieved, self-locking is completed, and the stability after the fixing is improved, the maintenance cost is reduced, the consumption is reduced, the service life and the safety and reliability are improved, and the anti-disassembly and anti-damage effects are achieved to a certain extent.

It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. An anticorrosive self-tapping bolt, includes bolt cap (1), its characterized in that: the anti-corrosion bolt is characterized in that the lower end of the bolt cap (1) is fixedly connected with the bolt (2), an anti-corrosion coating (8) is fixedly arranged on the surface of the bolt cap (1), a first mounting groove (3) is formed in the bolt cap (1), a second mounting groove (9) is formed in the bolt (2) and corresponds to the first mounting groove (3), a self-tapping drill bit (6) is fixedly connected with the lower end of the bolt (2), a self-locking hole (7) is formed in the lower end of the bolt (2), internal threads (11) are formed in the second mounting groove (9), and mounting cavities (17) are respectively formed in two sides of the lower end of the second mounting groove (9).

2. The corrosion-resistant self-tapping bolt as set forth in claim 1, wherein: the waterproof ring (4) is fixedly connected to the lower end of the bolt cap (1), and a plurality of tooth-shaped grooves (5) are fixedly connected to the lower end of the waterproof ring (4).

3. The corrosion-resistant self-tapping bolt as set forth in claim 1, wherein: one end of the self-locking hole (7) penetrates through the second mounting groove (9) and extends to the other end of the stud (2), and two self-locking blocks (13) are movably arranged in the self-locking hole (7).

4. A corrosion resistant self-tapping bolt as set forth in claim 3, wherein: one end of the self-locking block (13) is fixedly connected with a conical block (14), and one end of the self-locking block (13) away from the conical block (14) is fixedly connected with two limiting blocks (15).

5. The corrosion-resistant self-tapping bolt as set forth in claim 1, wherein: two installation cavities (17) are formed in the stud (2), springs (16) are fixedly connected in the installation cavities (17), and clamping blocks (18) are fixedly connected to one ends of the springs (16).

6. The corrosion resistant self-tapping bolt as set forth in claim 5, wherein: the second mounting groove (9) is connected with a threaded rod (10) through an internal thread (11), the lower end of the inside of the second mounting groove (9) is movably connected with a moving block (12), and the two clamping blocks (18) are positioned at the middle position of the surface of the moving block (12).