Rust-proof fastener and rust-proof treatment equipment

Abstract

The utility model relates to the technical field of fasteners, in particular to a rust-proof fastener and rust-proof treatment equipment. Comprising a bolt and an auxiliary assembly, the bolt is composed of a head part, an optical axis part and a thread part, the auxiliary assembly comprises a nut and a sponge ring, the nut is provided with a thread cavity, a containing groove and an oil passing groove, the containing groove and the oil passing groove are communicated, during connection, the head part of the bolt faces downwards, the thread part faces upwards and penetrates through a connecting piece via hole, and then the nut is screwed on the thread part; when the nut is screwed, the anti-rust oil layers on the surfaces of the thread part and the thread cavity are damaged, the anti-rust capability is reduced, at the moment, after the nut is screwed, the sponge ring soaked with the anti-rust oil is installed in the containing groove, and the redundant anti-rust oil in the sponge ring can immerse the engaged position of the thread part and the thread cavity through the oil passing groove and permeates and covers the engaged position through the thread gap; further, an anti-rust oil layer is formed in a matched mode to make up a damaged oil layer during installation, so that the anti-rust performance of the threaded meshing position of the bolt and the nut can be improved during use, and the connecting stability of the connecting piece is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to an anti-rust fastener and anti-rust treatment equipment. Background Art

[0002] Bolts and nuts are commonly used fasteners. Bolts can be divided into hexagonal bolts, hexagon socket bolts, etc. according to the shape of the head, and can be divided into full-thread bolts and partial-thread bolts according to the length of the threaded part. Nuts are mostly hexagonal nuts, which are used in conjunction with bolts to connect and fix components.

[0003] Generally, bolts and nuts are made of medium carbon steel. Due to the high carbon content, they are easily oxidized in the air, so an anti-rust layer is set on the surface of the bolts and nuts to prevent the bolts from rusting. However, the anti-rust layer on the existing bolts has poor anti-rust ability. When the fasteners are in use, the nuts and bolts will rotate relative to each other, and the bite between the nuts and bolts will cause friction between the nuts and bolts, which will damage the anti-rust layer. The fasteners will still be rusted after being used for a period of time. Once the fasteners are rusted, the rust speed of the fasteners will be very fast in the later stage, which greatly reduces the stability of the connection. Utility Model Content

[0004] The utility model aims to provide a rust-proof fastener, which can improve the rust-proof performance of the thread engagement of the bolt and the nut and improve the connection stability of the connecting piece when in use.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: The utility model provides a rust-proof fastener, including a bolt and an auxiliary component;

[0006] The bolt is composed of a head, a smooth axis portion and a threaded portion, wherein the head is located at the top of the bolt, the smooth axis portion is located below the head, and the threaded portion is located below the smooth axis portion;

[0007] The auxiliary component includes a nut and a sponge ring. The nut is threadedly connected to the bolt and is located on the threaded portion. The nut has a threaded cavity, a placement groove and an oil groove. The threaded cavity cooperates with the threaded portion and is located on the inner side of the nut. The placement groove is located on the nut. The oil groove is respectively connected to the threaded cavity and the placement groove and is arranged in a ring array on the nut. The sponge ring is detachably connected to the nut and is located in the placement groove.

[0008] Wherein, the outer surfaces of the bolt and the nut are respectively provided with an anti-rust protective layer.

[0009] The anti-rust protective layer is composed of a nitriding layer, a metal layer and a wear-resistant layer from the inside to the outside.

[0010] Wherein, the auxiliary component also includes a limit frame, which is rotatably connected to the bolt and is located on a side of the bolt close to the nut.

[0011] Wherein, a hexagonal inner cavity is provided on the bolt, and the hexagonal inner cavity is located on the head.

[0012] Among them, an anti-rust treatment equipment is used for the anti-rust treatment of the anti-rust fasteners.

[0013] The utility model discloses an anti-rust fastener, wherein a bolt is composed of a head, a smooth axis part and a threaded part, a nut is threadedly connected to the bolt, the nut has a threaded cavity, a placement groove and an oil through groove, the placement groove and the oil through groove are communicated, when connected, the bolt head is downward and the threaded part is upward, the bolt is passed through the through hole of the connecting piece, and then the nut is screwed on the threaded part, when screwed, the threaded part and the threaded cavity are engaged and matched, the anti-rust oil layer on the surface of the threaded part and the threaded cavity will be damaged, and the anti-rust ability will be reduced, at this time, after the nut is tightened, a sponge ring soaked with anti-rust oil can be installed in the placement groove, and then the excess anti-rust oil in the sponge ring can be immersed in the engagement of the threaded part and the threaded cavity through the oil through groove, and penetrate and cover through the thread gap, further cooperate to form an anti-rust oil layer, make up for the oil layer damaged during installation, and then achieve that when in use, the anti-rust performance of the engagement of the bolt and nut threads can be improved, and the connection stability of the connecting piece can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the rust-proof fastener of the first embodiment of the utility model.

[0016] Figure 2 It is a schematic structural diagram of a bolt according to the first embodiment of the utility model.

[0017] Figure 3 It is a structural schematic diagram of a nut according to the first embodiment of the utility model.

[0018] Figure 4 It is a schematic structural diagram of the anti-rust protective layer of the first embodiment of the utility model.

[0019] Figure 5 It is a schematic diagram of the overall structure of the rust-proof fastener of the second embodiment of the utility model.

[0020] In the figure: 101-bolt, 102-nut, 103-sponge ring, 104-rust-proof protective layer, 105-limiting frame, 1011-head, 1012-optical axis, 1013-threaded portion, 1021-threaded cavity, 1022-placement groove, 1023-oil groove, 1041-nitriding layer, 1042-metal layer, 1043-wear-resistant layer, 201-hexagonal cavity. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Embodiment 1:

[0023] like Figures 1 to 4 As shown, Figure 1 It is a schematic diagram of the overall structure of rust-proof fasteners. Figure 2 is a schematic diagram of the structure of the bolt 101. Figure 3 is a schematic diagram of the structure of the nut 102, Figure 4 It is a structural schematic diagram of the anti-rust protective layer 104. The utility model provides an anti-rust fastener: including a bolt 101 and an auxiliary component, wherein the bolt 101 is composed of a head 1011, a light axis portion 1012 and a threaded portion 1013, and the auxiliary component includes a nut 102, a sponge ring 103 and a limit frame 105. The nut 102 has a threaded cavity 1021, a placement groove 1022 and an oil-through groove 1023, and the placement groove 1022 is connected to the oil-through groove 1023. The above scheme can be used to improve the anti-rust performance of the threaded engagement of the bolt 101 and the nut 102, and improve the connection stability of the connector. It can be understood that the above scheme can improve the anti-rust performance of the threaded engagement of the bolt 101 and the nut 102, and improve the connection stability of the connector.

[0024] In this embodiment, the bolt 101 is a partially threaded bolt.

[0025] Among them, the bolt 101 is composed of a head 1011, an optical axis portion 1012 and a threaded portion 1013. The head 1011 is located at the top of the bolt 101, the optical axis portion 1012 is located below the head 1011, and the threaded portion 1013 is located below the optical axis portion 1012; the head 1011 is an outer hexagonal shape, which will facilitate the bolt 101 to be clamped by a movable wrench or a fixed wrench. The optical axis portion 1012 passes through the through hole of the connecting piece during installation, and the threaded portion 1013 will be used to tighten and install the nut 102. During installation, the head 1011 is downward and the threaded portion 1013 is upward, in order to prevent the anti-rust oil in the sponge ring 103 from dripping toward the side away from the bite.

[0026] The auxiliary component includes a nut 102 and a sponge ring 103. The nut 102 is threadedly connected to the bolt 101 and is located on the threaded portion 1013. The nut 102 has a threaded cavity 1021, a placement groove 1022 and an oil groove 1023. The threaded cavity 1021 cooperates with the threaded portion 1013 and is located on the inner side of the nut 102. The placement groove 1022 is located on the nut 102. The oil groove 1023 is respectively connected to the threaded cavity 1021 and the placement groove 1022, and is arranged in a ring array on the nut 102. The sponge ring 103 is detachably connected to the nut 102 and is located in the placement groove 1022. The threaded cavity 1021 can be directly engaged with the threaded portion 1013 for installation. The placement groove 1022 is opened at the bottom of the nut 102. After the nut 102 is installed, it is located at the top of the nut 102. The placement groove 1022 can be directly used for placing and installing the sponge ring 103. The oil grooves 1023 are opened on the nut 102 at annular intervals and are respectively connected with the threaded cavity 1021 and the placement grooves 1022. The lowest point of the oil grooves 1023 is on the lowest surface of the placement grooves 1022 to facilitate the circulation of oil.

[0027] Secondly, the outer surfaces of the bolt 101 and the nut 102 are respectively provided with an anti-rust protective layer 104. The anti-rust protective layer 104 is used to improve the surface anti-rust ability of the bolt 101 and the nut 102.

[0028] Then, the anti-rust protective layer 104 is composed of a nitriding layer 1041, a metal layer 1042 and a wear-resistant layer 1043 from the inside to the outside. The nitriding layer 1041 is fixed on the surface of the bolt 101 and the nut 102 respectively, the metal layer 1042 is made of a metallic chromium material, the wear-resistant layer 1043 is made of a mixed material of chromium nitride and carbon nitride, and the nitriding layer 1041 and the wear-resistant layer 1043 are fixed on both sides of the metal layer 1042. By arranging the nitriding layer 1041, the metal layer 1042 and the wear-resistant layer 1043 on the surface of the bolt 101 and the nut 102, the surface anti-rust ability of the bolt 101 and the nut 102 can be further improved.

[0029] Finally, the limit frame 105 is rotatably connected to the bolt 101 and is located on the side of the bolt 101 close to the nut 102. A threaded hole is provided at the bottom of the bolt 101 to facilitate the installation of the external threaded mounting portion of the limit frame 105. After the limit frame 105 is installed, on the one hand, the sponge ring 103 can be limited, and on the other hand, the nut 102 can be prevented from loosening, which is beneficial to improve the stability of the connecting piece.

[0030] When using the utility model to improve the anti-rust performance of the threaded engagement of the bolt 101 and the nut 102 and improve the connection stability of the connector, during connection, the bolt 101 is passed through the through hole of the connector with the head 1011 downward and the threaded portion 1013 upward, and then the nut 102 is screwed onto the threaded portion 1013. During tightening, the threaded portion 1013 and the threaded cavity 1021 are engaged with each other, which will damage the anti-rust oil layer on the surface of the threaded portion 1013 and the threaded cavity 1021, thereby reducing the anti-rust ability. At this time, after the nut 102 is tightened, the sponge ring 103 soaked in anti-rust oil can be installed in the placement groove 1022, and the limiting frame 105 can be installed. Then, the excess anti-rust oil in the sponge ring 103 can be removed through the through hole. The oil groove 1023 is immersed in the engagement of the threaded portion 1013 and the threaded cavity 1021, and penetrates and covers through the thread gap, further cooperating to form an anti-rust oil layer, making up for the oil layer damaged during installation, and automatically lubricating for a certain period of time. The limit frame 105 can limit the sponge ring 103, and at the same time, the nut 102 can also be prevented from loosening, which is beneficial to improve the stability of the connecting piece. Furthermore, by respectively arranging the nitriding layer 1041, the metal layer 1042 and the wear-resistant layer 1043 on the surface of the bolt 101 and the nut 102, the surface anti-rust ability of the bolt 101 and the nut 102 can be further improved, so that when in use, the anti-rust performance of the thread engagement of the bolt 101 and the nut 102 can be improved, and the connection stability of the connecting piece can be improved.

[0031] Embodiment 2:

[0032] like Figure 5 As shown, Figure 5 is a schematic diagram of the overall structure of the rust-proof fastener. On the basis of the first embodiment, the utility model provides a rust-proof fastener. The bolt 101 is provided with an inner hexagonal cavity 201 , and the inner hexagonal cavity 201 is located on the head 1011 .

[0033] In this embodiment, the inner hexagonal cavity 201 is provided on the head 1011 of the bolt 101. Since the head 1011 is an outer hexagonal shape, it is convenient to fix the bolt 101 by means of an adjustable wrench or a fixed wrench. Furthermore, after the inner hexagonal cavity 201 is provided, it is convenient to fix the bolt 101 by means of an inner hexagonal wrench, and it is convenient to tighten the nut 102, which is beneficial for the bolt 101 to be used with a variety of wrenches, and also greatly improves the practicality of the bolt 101.

[0034] Finally, an anti-rust treatment device is provided, which is used for the anti-rust treatment of the anti-rust fastener.

[0035] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A rust-proof fastener, comprising a bolt, characterized in that: Also included are auxiliary components; The bolt is composed of a head, a smooth axis portion and a threaded portion, wherein the head is located at the top of the bolt, the smooth axis portion is located below the head, and the threaded portion is located below the smooth axis portion; The auxiliary component includes a nut and a sponge ring. The nut is threadedly connected to the bolt and is located on the threaded portion. The nut has a threaded cavity, a placement groove and an oil groove. The threaded cavity cooperates with the threaded portion and is located on the inner side of the nut. The placement groove is located on the nut. The oil groove is respectively connected to the threaded cavity and the placement groove and is arranged in a ring array on the nut. The sponge ring is detachably connected to the nut and is located in the placement groove.

2. The rust-proof fastener according to claim 1, characterized in that: The outer surfaces of the bolt and the nut are respectively provided with an anti-rust protective layer.

3. The rust-proof fastener according to claim 2, characterized in that: The anti-rust protective layer is composed of a nitriding layer, a metal layer and a wear-resistant layer from the inside to the outside.

4. The rust-proof fastener according to claim 1, characterized in that: The auxiliary component also includes a limiting frame, which is rotatably connected to the bolt and is located on a side of the bolt close to the nut.

5. The rust-proof fastener according to claim 1, characterized in that: The bolt is provided with an inner hexagonal cavity, and the inner hexagonal cavity is located on the head. 6.An anti-rust treatment equipment, characterized in that: Used for rust-proof treatment of rust-proof fasteners as claimed in any one of claims 1 to 5.

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