Transmission special-shaped fastener for printer

Abstract

The utility model relates to the technical field of printers, in particular to a transmission special-shaped fastener for a printer, which comprises a fastener main body, a pentagonal cavity is arranged in the fastener main body, five groups of corner protection structures are arranged in the pentagonal cavity, and the five groups of corner protection structures are respectively arranged at all corners of the pentagonal cavity; five groups of arc-shaped sunken parts are mounted on the surface of the fastener main body; a protection structure is further arranged on the surface of the fastener body and used for protecting the fastener body. The strength of the five corners of the pentagonal cavity is improved through the corner protection structures, the structural strength of the five corners of the pentagonal cavity is improved through the hard corner protection strips, the five corners of the pentagonal cavity are prevented from deforming, and therefore the service life of the transmission special-shaped fastener is prolonged; and meanwhile, wear resistance of the transmission special-shaped fastener is achieved through the wear-resistant layer, and therefore protection work of the transmission special-shaped fastener is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a transmission special-shaped fastener for a printer. Background Art

[0002] A printer is one of the output devices of a computer, used to print the results of computer processing on related media. There are many types of printers. Depending on whether the printing element has an impact action on the paper, they are divided into impact printers and non-impact printers. In addition, printers need to use transmission special-shaped fasteners when working.

[0003] The corners of the inner wall of the existing special-shaped transmission fasteners will wear out after long-term use, which will make the special-shaped transmission fasteners unable to be disassembled and assembled, thereby causing the special-shaped transmission fasteners to be scrapped; and the existing special-shaped transmission fasteners are prone to rust during use, thereby shortening the service life of the special-shaped transmission fasteners. Utility Model Content

[0004] The utility model aims to provide a transmission special-shaped fastener for a printer, so as to solve the problem that the existing transmission special-shaped fasteners mentioned in the background art may wear and rust easily.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a transmission special-shaped fastener for a printer, comprising a fastener body, a pentagonal cavity is provided inside the fastener body, five groups of corner protection structures are arranged inside the pentagonal cavity, and the five groups of corner protection structures are respectively arranged at the respective corner positions of the pentagonal cavity; five groups of arc-shaped recessed portions are installed on the surface of the fastener body, and the five groups of arc-shaped recessed portions and the five corners of the pentagonal cavity are staggered with each other; a protective structure is also provided on the surface of the fastener body, and the protective structure is used to protect the fastener body.

[0006] Preferably, the corner protection structure is composed of a combination of grooves and hard corner protection strips, and the grooves are provided in five groups, and the five groups of grooves are respectively opened at the five corner positions of the five-sided cavity.

[0007] Preferably, a hard corner protection strip is embedded inside the groove, and the outer surfaces of the hard corner protection strip are flush with the inner walls of the five-sided cavity.

[0008] Preferably, the protective structure is composed of an anti-rust layer and a wear-resistant layer. The anti-rust layer is sprayed on the outer surface of the fastener body, and the anti-rust layer is used for rust prevention of the fastener body.

[0009] Preferably, the surface of the anti-rust layer is coated with a wear-resistant layer, and the wear-resistant layer is used for the wear-resistant work of the fastener body.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the transmission special-shaped fastener for the printer increases the strength of the five corners of the pentagonal cavity through the corner protection structure; when the corner protection structure is implemented, a hard corner protection strip is embedded in the inside of the groove, and the hard corner protection strip is used to increase the structural strength of the five corners of the pentagonal cavity, thereby avoiding deformation of the five corners of the pentagonal cavity, thereby extending the service life of the transmission special-shaped fastener; it is protected by the protective structure; when the protective structure is implemented, rust prevention is carried out through the rust-proof layer, and the wear-resistant layer is used to achieve the wear resistance of the transmission special-shaped fastener, thereby achieving the protection of the transmission special-shaped fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0012] Figure 2 It is a side cross-sectional structural schematic diagram of the utility model;

[0013] Figure 3 It is a schematic diagram of the enlarged structure of the utility model from top view.

[0014] In the figure: 1. fastener body; 11. arc-shaped recessed portion; 2. pentagonal cavity; 3. corner protection structure; 31. groove; 32. hard corner protection strip; 4. protection structure; 41. anti-rust layer; 42. wear-resistant layer. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. In addition, the terms "first", "second", "third", "upper, lower, left, right", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. At the same time, in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0016] The utility model provides a structure of a transmission special-shaped fastener for a printer as shown in Figure 1As shown, it includes a fastener body 1, a pentagonal cavity 2 is opened inside the fastener body 1, five groups of corner protection structures 3 are arranged inside the pentagonal cavity 2, and the five groups of corner protection structures 3 are respectively opened at the corner positions of the pentagonal cavity 2. The corner protection structure 3 is composed of a combination of grooves 31 and hard corner protection strips 32. There are five groups of grooves 31, and the five groups of grooves 31 are respectively opened at the five corner positions of the pentagonal cavity 2. The inside of the grooves 31 is inlaid with hard corner protection strips 32, and the outer surfaces of the hard corner protection strips 32 are flush with the inner walls of the pentagonal cavity 2.

[0017] During implementation, the strength of the five corners of the pentagonal cavity 2 is increased by the corner protection structure 3. When the corner protection structure 3 is implemented, a hard corner protection strip 32 is embedded in the groove 31, and the hard corner protection strip 32 is used to increase the structural strength of the five corners of the pentagonal cavity 2, thereby avoiding deformation of the five corners of the pentagonal cavity 2, thereby extending the service life of the transmission special-shaped fastener.

[0018] Furthermore, if Figure 2 As shown in Figures , , and , five groups of arc-shaped recessed portions 11 are installed on the surface of the fastener body 1, and the five groups of arc-shaped recessed portions 11 and the five corners of the pentagonal cavity 2 are staggered with each other; a protective structure 4 is also provided on the surface of the fastener body 1, and the protective structure 4 is used to protect the fastener body 1. The protective structure 4 is composed of an anti-rust layer 41 and a wear-resistant layer 42. The anti-rust layer 41 is sprayed on the outer surface of the fastener body 1, and the anti-rust layer 41 is used for rust prevention of the fastener body 1. The surface of the anti-rust layer 41 is coated with a wear-resistant layer 42, and the wear-resistant layer 42 is used for wear resistance of the fastener body 1.

[0019] During implementation, the protective structure 4 is used to protect it. When the protective structure 4 is implemented, the anti-rust layer 41 is used to prevent rust. At the same time, the wear-resistant layer 42 is used to achieve the wear resistance of the transmission special-shaped fasteners, thereby achieving the protection of the transmission special-shaped fasteners.

[0020] Working principle: When in use, the strength of the five corners of the pentagonal cavity 2 is increased by the corner protection structure 3. When the corner protection structure 3 is implemented, a hard corner protection strip 32 is embedded in the groove 31, and the hard corner protection strip 32 is used to increase the structural strength of the five corners of the pentagonal cavity 2, thereby avoiding deformation of the five corners of the pentagonal cavity 2, thereby extending the service life of the transmission special-shaped fastener.

[0021] During the use of the transmission special-shaped fasteners, they are protected by the protective structure 4. When the protective structure 4 is implemented, rust prevention is carried out by the anti-rust layer 41, and the wear resistance of the transmission special-shaped fasteners is achieved by the wear-resistant layer 42, thereby achieving the protection of the transmission special-shaped fasteners and finally completing the use of the transmission special-shaped fasteners.

[0022] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A transmission special-shaped fastener for a printer, comprising a fastener body (1), characterized in that: The fastener body (1) is provided with a pentagonal cavity (2) inside, and five groups of corner protection structures (3) are arranged inside the pentagonal cavity (2), and the five groups of corner protection structures (3) are respectively arranged at the respective corner positions of the pentagonal cavity (2); the surface of the fastener body (1) is provided with five groups of arc-shaped recessed portions (11), and the five groups of arc-shaped recessed portions (11) and the five corners of the pentagonal cavity (2) are mutually staggered; the surface of the fastener body (1) is also provided with a protective structure (4), and the protective structure (4) is used to protect the fastener body (1).

2. The transmission special-shaped fastener for a printer according to claim 1, characterized in that: The corner protection structure (3) is composed of a combination of grooves (31) and hard corner protection strips (32). Five groups of grooves (31) are provided. The five groups of grooves (31) are respectively opened at the five corner positions of the five-sided cavity (2).

3. The transmission special-shaped fastener for a printer according to claim 2, characterized in that: A hard corner protection strip (32) is embedded inside the groove (31), and the outer surfaces of the hard corner protection strip (32) are flush with the inner walls of the five-sided cavity (2).

4. The transmission special-shaped fastener for a printer according to claim 1, characterized in that: The protective structure (4) is composed of an anti-rust layer (41) and a wear-resistant layer (42); the anti-rust layer (41) is sprayed on the outer surface of the fastener body (1); the anti-rust layer (41) is used to prevent rust on the fastener body (1).

5. The transmission special-shaped fastener for a printer according to claim 4, characterized in that: The surface of the anti-rust layer (41) is coated with a wear-resistant layer (42), and the wear-resistant layer (42) is used for the wear-resistant work of the fastener body (1).

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