A fastener for ease of installation in a u-channel

Abstract

The utility model discloses a fastener convenient to install in U type channel steel, including nut, bolt, through setting rotation restriction part in the inner end surface of nut head, when using, push the nut with rotation restriction part into U type channel steel and make rotation restriction part and be inserted into the opening on U type channel steel or be against on the inner wall of U type channel steel and realize rotation restriction, and then can be screwed the bolt that cooperates with it, and the operation is very convenient.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and specifically to a fastener that is easy to install in a U-shaped channel steel. Background Technology

[0002] U-shaped channel steel (also known as C-shaped steel) is widely used in many fields due to its excellent mechanical properties, highly flexible connection and adjustment capabilities, and good corrosion resistance. For example, it is one of the core materials used in the manufacture of photovoltaic brackets. However, in practical applications, the narrow internal space of U-shaped channel steel leaves very little room for tools after standard-sized nuts and bolts are inserted. This is especially true for longer U-shaped channel steel and when working at heights, making it particularly difficult and inefficient to tighten the nuts in the middle. Furthermore, the nuts tend to rotate along with the bolts during tightening, further complicating the operation. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a fastener with a reasonable structural design that is easy to install in U-shaped channel steel.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A fastener that is easy to install in a U-shaped channel steel includes a nut and a bolt, characterized in that the nut is provided with a rotation limiting part.

[0005] Preferably, the rotation limiting part is one or two protrusions integrally formed with the end face of the nut or welded to the end face of the nut, and the maximum size of the protrusion is smaller than the opening size on the U-shaped channel steel; when there is one protrusion, the protrusion is located on any side outside the nut screw hole; when there are two protrusions, the two protrusions are located on two opposite sides outside the nut screw hole.

[0006] Preferably, the rotation limiting part is one or two extensions integrally formed with or welded to the side of the nut, and the length of the extension is greater than the distance between the center of the opening on the U-shaped channel steel and the inner wall of the U-shaped channel steel; when there is one extension, the extension is located on any side of the nut, and when there are two extensions, the two extensions are located on two opposite sides of the nut respectively.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a rotation limiting part on the inner end face of the nut head. In use, the nut with the rotation limiting part is pushed into the U-shaped channel steel and the rotation limiting part is locked into the opening on the U-shaped channel steel or abuts against the inner wall of the U-shaped channel steel to achieve rotation restriction. Then, the matching bolt is tightened. The operation is very convenient. Attached Figure Description

[0008] Figure 1This is a schematic diagram of the opening structure on a U-shaped channel steel. Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present utility model; Figure 3 This is a schematic diagram of the nut end face structure according to Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Figure 5 This is a schematic diagram of the nut end face structure according to Embodiment 2 of this utility model; Figure 6 This is a structural schematic diagram of Embodiment 3 of the present invention; Figure 7 This is a schematic diagram of the nut and U-shaped channel steel fitting together in Embodiment 3 of this utility model; Figure 8 This is a schematic diagram of the structure of Embodiment 4 of this utility model; Figure 9 This is a schematic diagram of the nut and U-shaped channel steel fitting together in Embodiment 4 of this utility model; Detailed Implementation

[0009] The present invention will now be described in detail with reference to the accompanying drawings. The following embodiments are merely preferred embodiments of the present invention, and any equivalent or similar substitutions without departing from the concept of the present invention should fall within the protection scope of the present invention. Parts not described in detail below are based on existing technology in the field. Example 1

[0010] like Figure 1-3 As shown, the fasteners in this embodiment, which facilitate installation in U-shaped channel steel, include a hexagonal nut 1 and a bolt 2. A protrusion 3 is integrally formed or welded onto the end face of the hexagonal nut 1 that is used to fit the U-shaped channel steel. The protrusion 3 is located on one side of the screw hole 1.1 of the nut 1. The maximum size of the protrusion 3 is smaller than the opening 5 (minimum size) on the U-shaped channel steel 4, so that the protrusion 3 can be inserted into the opening 5 of the U-shaped channel steel 4. During operation, the end face of the nut 1 with the protrusion 3 is placed against the U-shaped channel steel 4, and the protrusion 3 is inserted into the opening 5 of the U-shaped channel steel 4 and held in place with one hand. The other hand is used to screw the bolt 2 into the nut 1. During the tightening process, the protrusion 3 of the nut 1 abuts against the inner wall of the opening 5 of the U-shaped channel steel 4 and cannot rotate with it, thus making the tightening operation very convenient and time-saving. Example 2

[0011] Except for the following differences, everything else is the same as in Example 1: like Figure 4-5As shown, there are two protrusions 3, located on opposite sides of the screw hole 1.1 of the nut 1. During operation, the end face of the nut 1 with protrusions 3 is placed against the U-shaped channel steel 4, and the two protrusions 3 are inserted into the opening 5 of the U-shaped channel steel 4. During bolt tightening, the two protrusions 3 of the nut 1 abut against the inner wall of the opening 5 of the U-shaped channel steel 4 and cannot rotate, making the tightening operation very convenient and time-saving. Example 3

[0012] like Figure 6-7 As shown, the fasteners in this embodiment, which facilitate installation in a U-shaped channel steel, include a hexagonal nut 1 and a bolt 2. An extension portion 6 is integrally formed on one side of the hexagonal nut 1, and the sum of the length of the extension portion 6 and the radius of the circumscribed circle of the hexagonal nut 1 is greater than the distance between the center of the opening 5 on the U-shaped channel steel 4 and any inner sidewall of the U-shaped channel steel 4. During operation, any end face of the nut 1 is placed against the inner bottom of the U-shaped channel steel 4. During the bolt tightening process, the extension portion 6 will abut against the inner sidewall of the U-shaped channel steel 4 and will not continue to rotate, thus making the tightening operation very convenient and time-saving. Example 4

[0013] Except for the following differences, everything else is the same as in Example 3: like Figure 8-9 As shown, there are two extensions 6, distributed on two opposite sides of the nut 1. The extensions 6 and nut 1 are integrally designed, and the two extensions 6 and nut 1 together form a flat, thick, sheet-like metal nut. The length of the entire flat, thick, sheet-like metal nut is greater than the inner width of the U-shaped channel. During bolt tightening, the flat, thick, sheet-like metal nut is rotated, and its length direction continuously approaches the width direction of the U-shaped channel. Eventually, the two ends of the flat, thick, sheet-like metal nut (the outer ends of the two extensions) abut against the inner walls on both sides of the U-shaped channel in the width direction, preventing further rotation and thus simplifying the tightening operation and saving time.

Claims

1. A fastener that is easy to install in a U-shaped channel steel, comprising a nut and a bolt, characterized in that, A rotation limiting part is provided on the nut; the rotation limiting part is one or two protrusions integrally formed with the end face of the nut or welded to the end face of the nut, and the maximum size of the protrusion is smaller than the opening size on the U-shaped channel steel. When there is one protrusion, the protrusion is located on any side outside the nut's threaded hole. When there are two protrusions, the two protrusions are located on two opposite sides outside the nut's threaded hole. Alternatively, the rotation limiting part is one or two extensions integrally formed with the side of the nut or welded to the side of the nut, and the length of the extension is greater than the distance between the center of the opening on the U-shaped channel steel and the inner wall of the U-shaped channel steel. When there is one extension, the extension is located on any side of the nut. When there are two extensions, the two extensions are located on two opposite sides of the nut.

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