Rust-proof fastener

Abstract

The utility model belongs to the technical field of fasteners, and particularly relates to a rust-proof fastener which comprises a nut, a screw is fixed to the bottom of the nut, a protective cover is connected to the outer wall of the nut in a sleeving mode, a plurality of sliding blocks are fixed to the inner side of the protective cover, sliding grooves in sliding connection with the sliding blocks are formed in the outer wall of the nut, and springs are fixed to the inner top walls of the sliding grooves. The bottom of the spring is fixed to the outer wall of the sliding block, and a sealing gasket is fixed to the bottom of the protective cover. A reinforcing plate is arranged on the side wall of the protective cover; a plurality of annular grooves are formed in the bottom of the sealing gasket. The nut in the protective cover can be sealed, external rainwater can be effectively prevented from permeating into the connecting position, the nut can be effectively protected from being impacted by the rainwater, the nut is prevented from rusting, and the service life of the bolt is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of fasteners, and in particular relates to a rust-proof fastener. Background Art

[0002] Fasteners are a type of mechanical parts, whose main function is to fasten and connect two or more parts (or components) to make them a whole. Fasteners are widely used in many industries, including energy, electronics, electrical appliances, machinery, chemicals, metallurgy, molds, hydraulics, etc. Various fasteners can be seen on various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemicals, instruments and supplies.

[0003] Bolts are a widely used fastener. When faced with external environmental factors such as rainy weather, their corrosion risk increases significantly. This corrosion may not only weaken the strength of the bolts, but also greatly reduce their fixing effect, thereby posing a threat to the overall stability and safety of the equipment. What is more troublesome is that once the bolts that have been exposed to harsh environments for a long time rust, it will greatly increase the difficulty of subsequent maintenance and disassembly, causing many inconveniences for users. Utility Model Content

[0004] The utility model aims to provide a rust-proof fastener, which can seal the nut in the protective cover, effectively prevent external rainwater from penetrating into the connection, effectively protect the nut from being impacted by rainwater, prevent the nut from rusting, and increase the service life of the bolt.

[0005] The technical solutions adopted in this utility are as follows:

[0006] A rust-proof fastener comprises a nut, a screw rod is fixed at the bottom of the nut, a protective cover is sleeved on the outer wall of the nut, a plurality of sliders are fixed on the inner side of the protective cover, a sliding groove is provided on the outer wall of the nut and is slidably connected to the slider, a spring is fixed to the inner top wall of the sliding groove, and the bottom of the spring is fixed to the outer wall of the slider, and a sealing gasket is fixed to the bottom of the protective cover.

[0007] Furthermore, the side walls of the protective cover are provided with reinforcement plates.

[0008] Furthermore, a plurality of annular grooves are provided at the bottom of the sealing gasket.

[0009] Furthermore, the cross-sectional shape of the protective cover and the nut is hexagonal, and the protective cover matches the nut.

[0010] Furthermore, the outer surface of the screw is provided with a corrosion-resistant layer, and the outer surface of the corrosion-resistant layer is provided with a protective layer.

[0011] Furthermore, the corrosion-resistant layer is ethyl silicate, and the protective layer is polyurethane.

[0012] The technical effects achieved by this utility model are:

[0013] The utility model discloses a rust-proof fastener, which is provided with a protective cover and a sealing gasket. When the bolt is used, the elastic force of the spring can drive the slider to move, and the slider drives the sealing gasket on the protective cover to fit tightly with the fixed part, so as to seal the nut in the protective cover, effectively prevent external rainwater from penetrating into the connection, effectively protect the nut from being impacted by rainwater, prevent the nut from rusting, and increase the service life of the bolt. The provided corrosion-resistant layer and protective layer can effectively improve the corrosion resistance of the screw, prevent the screw from rusting, and increase the service life of the screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model in a front view;

[0015] Figure 2 It is a schematic diagram of the main cutaway structure of the present utility model;

[0016] Figure 3 It is a schematic diagram of the screw structure of the present invention.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0018] 1. Nut; 2. Screw; 3. Protective cover; 4. Slide groove; 5. Slider; 6. Spring; 7. Sealing gasket; 8. Annular groove; 9. Corrosion-resistant layer; 10. Protective layer; 11. Reinforcement plate. DETAILED DESCRIPTION

[0019] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0020] like Figure 1-3The nut 1 is provided with a screw rod 2, a protective cover 3 is sleeved on the outer wall of the nut 1, a plurality of sliders 5 are fixed on the inner side of the protective cover 3, a slide groove 4 is provided on the outer wall of the nut 1 for sliding connection with the slider 5, a spring 6 is fixed on the inner top wall of the slide groove 4, and the bottom of the spring 6 is fixed to the outer wall of the slider 5, and the spring 6 has a downward force on the slider 5 through the elastic force, when the bolt is used, the sealing gasket 7 at the bottom of the protective cover 3 can be fitted with the fixed part, and the sealing gasket 7 is fixed on the bottom of the protective cover 3, which has a simple structure, and the protective cover 3 and the sealing gasket 7 are matched, when the bolt is used, the nut 1 can be sealed to prevent the external rainwater from penetrating and rusting the nut 1 and the screw rod 2, which is convenient for the later disassembly work, and is relatively complete and usable; the side wall of the protective cover 3 is provided with a reinforcing plate 11, which improves the strength of the protective cover 3, avoids damage when the protective cover 3 is twisted with a wrench, and improves the service life of the protective cover 3;

[0021] like Figure 1-2 As shown, a plurality of annular grooves 8 are provided at the bottom of the sealing gasket 7, which further improves the sealing performance when the bolts are fixed, so that the sealing gasket 7 can fit tightly with the fixing member;

[0022] like Figure 1-2 As shown, the cross-sectional shapes of the protective cover 3 and the nut 1 are hexagonal, and the protective cover 3 matches the nut 1, so that the protective cover 3 covers the nut 1, thereby protecting the nut 1, and the nut 1 can be driven to rotate by rotating the protective cover 3;

[0023] like Figure 3 As shown, the outer surface of the screw 2 is provided with a corrosion-resistant layer 9, and the outer surface of the corrosion-resistant layer 9 is provided with a protective layer 10. The corrosion-resistant layer 9 is ethyl silicate, and the protective layer 10 is polyurethane, which can effectively improve the corrosion resistance of the screw 2, prevent the screw 2 from rusting, and increase the service life of the screw 2.

[0024] The working principle of the utility model is as follows: when in use, the protective cover 3 is screwed by an external wrench, because the shape of the protective cover 3 matches the nut 1, so that the protective cover 3 can drive the nut 1 to rotate, and the nut 1 drives the screw rod 2 to rotate, and the screw rod 2 is screwed into the screw hole of the fixed part. Through the elastic force of the spring 6, there will be a downward force on the slider 5, which can make the sealing gasket 7 at the bottom of the protective cover 3 fit with the fixed part, thereby sealing the nut 1 and preventing the nut 1 from being corroded by external rainwater.

[0025] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A rust-proof fastener, characterized in that: The invention comprises a nut (1), a screw rod (2) being fixed at the bottom of the nut (1), a protective cover (3) being sleeved on the outer wall of the nut (1), a plurality of sliders (5) being fixed on the inner side of the protective cover (3), a slide groove (4) being provided on the outer wall of the nut (1) and being slidably connected to the sliders (5), a spring (6) being fixed on the inner top wall of the slide groove (4), and the bottom of the spring (6) being fixed to the outer wall of the sliders (5), and a sealing gasket (7) being fixed on the bottom of the protective cover (3).

2. The rust-proof fastener according to claim 1, characterized in that: The side wall of the protective cover (3) is provided with a reinforcing plate (11).

3. The rust-proof fastener according to claim 1, characterized in that: The bottom of the sealing gasket (7) is provided with a plurality of annular grooves (8).

4. The rust-proof fastener according to claim 1, characterized in that: The cross-sectional shapes of the protective cover (3) and the nut (1) are hexagonal, and the protective cover (3) matches the nut (1).

5. The rust-proof fastener according to claim 1, characterized in that: The outer surface of the screw (2) is provided with a corrosion-resistant layer (9), and the outer surface of the corrosion-resistant layer (9) is provided with a protective layer (10).

6. The rust-proof fastener according to claim 5, characterized in that: The corrosion-resistant layer (9) is ethyl silicate, and the protective layer (10) is polyurethane.

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