Special-shaped nut with fastening connection function

Abstract

The special-shaped nut with the fastening connection function comprises a nut body, the nut body is a cylinder, a through hole is formed in the axis of the cylinder, internal threads are formed in the through hole, a square groove is formed in the hole wall of the through hole, and the square groove is parallel to the axis of the through hole; a locking strip is movably arranged in the square groove, one side of the locking strip is an arc-shaped face, the arc-shaped face and the through hole are coaxially arranged, the radius of the arc-shaped face is equal to that of the through hole, and threads matched with the internal threads are formed in the arc-shaped face. The square groove distributed in the axial direction of the through hole is formed in the nut body, the locking strip with the threads is movably placed in the square groove, and the locking strip and the nut body do not move synchronously in the working process, so that the threads of the locking strip and the internal threads of the nut body are staggered, and looseness prevention of the nut is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a special-shaped nut with a fastening connection function. Background Art

[0002] Special-shaped nuts refer to non-national standard nuts, which are used in specific mechanical buildings and require design drawings, processing, surface treatment and other processes to produce products with inner thread. The locking effect of existing special-shaped nuts is not very good. During use, they are easy to loosen or even fall due to vibration or shaking of objects, causing production accidents.

[0003] Based on the above technical problems, the present application proposes a special-shaped nut with a tightening connection function. Utility Model Content

[0004] The purpose of the utility model is to provide a special-shaped nut with a fastening connection function to solve the technical problems mentioned in the background technology. The purpose of the utility model is achieved through the following technical solutions:

[0005] A special-shaped nut with a fastening connection function comprises a nut body, the nut body is a cylinder, a through hole is provided on the axis of the cylinder, an internal thread is provided in the through hole, a square groove is provided on the hole wall of the through hole, and the square groove is arranged parallel to the axis of the through hole; a locking strip is movably arranged in the square groove, one side of the locking strip is an arc surface, the arc surface is coaxially arranged with the through hole, the radius of the arc surface is equal to the radius of the through hole, and a thread matching the internal thread is provided on the arc surface.

[0006] Furthermore, a pressure ring is provided at one end of the nut body, and an anti-slip pattern is provided on a side of the pressure ring away from the nut body.

[0007] Furthermore, a pressing groove is provided on one side of the pressing ring away from the nut body, a pressing plate is provided in the pressing groove, and the pressing plate is fixedly connected to the locking strip; when the pressing plate fits with the pressing groove, the thread and the internal thread are staggered.

[0008] The technical solution provided in the embodiments of the present application has at least the following technical effects or advantages:

[0009] By opening a square groove distributed along the axial direction of the through hole in the nut body and movably placing a locking strip with a thread in the square groove, the locking strip and the nut body are displaced asynchronously during operation, so that the thread of the locking strip is interlaced with the internal thread of the nut body, thereby preventing the nut from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0011] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0012] Figure 2 This is a schematic diagram of the nut body structure of an embodiment of the present application;

[0013] Figure 3 This is a schematic diagram of the locking strip structure of an embodiment of the present application;

[0014] Figure 4 This is a cross-sectional view of an embodiment of the present application.

[0015] Markings in the attached drawings: 1, nut body; 11, through hole; 111, square groove; 12, internal thread; 13, pressure ring; 131, pressure groove; 2, locking strip; 21, arc surface; 22, thread; 23, pressure plate. DETAILED DESCRIPTION

[0016] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the drawings and specific implementation methods of the specification. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0017] like Figure 1-Figure 4 A special-shaped nut with a fastening connection function is shown, comprising a nut body 1 and a locking strip 2. The nut body 1 is a regular hexagonal prism, and a through hole 11 is provided on the central axis of the regular hexagonal prism, and an internal thread 12 is provided in the through hole 11. A circular pressure ring 13 is fixed to one end of the nut body 1, and the pressure ring 13 is integrally formed with the nut body 1, and the through hole 11 passes through the pressure ring 13. Preferably, the side of the pressure ring 13 away from the nut body 1 has anti-slip grooves (not shown), and when in use, the anti-slip grooves abut against the surface of the connecting piece to increase the friction between the special-shaped nut and the connecting piece to prevent the special-shaped nut from loosening.

[0018] like Figure 2-Figure 4 As shown, a square groove 111 is formed on the wall of the through hole 11 and distributed along its axis, and both ends of the square groove 111 penetrate through both ends of the through hole 11. A pressing groove 131 is formed on the outer side of the pressing ring 13, and the pressing groove 131 is distributed along the radial direction of the pressing ring 13, and the inner end of the pressing groove 131 is connected to the square groove 111.

[0019] like Figure 2-Figure 4As shown, a locking strip 2 is movably installed in the square groove 111, and the side of the locking strip 2 close to the through hole 11 is an arc surface 21, which is coaxial with the through hole 11, and the radius of the arc surface 21 is equal to the radius of the through hole 11, and the arc surface 21 is provided with a thread 22 matching the internal thread 12. A pressing plate 23 is fixed at one end of the locking strip 2, and the pressing plate 23 is perpendicular to the locking strip 2. The pressing plate 23 is located in the pressing groove 131, and the thickness of the pressing plate 23 is greater than or equal to the depth of the pressing groove 131. When the special-shaped nut is connected, the nut body 1 presses the pressing plate 23 into the pressing groove 131, and the thread 22 of the locking strip 2 is staggered with the internal thread 12 of the nut body 1 to prevent the special-shaped nut from loosening.

[0020] The working principle of the embodiment of the present application is as follows:

[0021] During installation, the locking strip 2 is inserted into the nut body 1. At this time, the locking piece 2 is in a free state, so that it can be screwed in along the bolt or stud together with the nut body 1; when the locking strip 2 abuts against the connecting piece, the locking strip 2 stops being screwed in, while the nut body 1 continues to be screwed in so that the thread 22 of the locking strip 2 is staggered with the internal thread 12 of the nut body 1, thereby increasing the friction between the special-shaped nut and the bolt or stud, and preventing the special-shaped nut from loosening.

[0022] The technical solution provided in the embodiments of the present application has at least the following technical effects or advantages:

[0023] By opening a square groove distributed along the axial direction of the through hole in the nut body and movably placing a locking strip with a thread in the square groove, the locking strip and the nut body are displaced asynchronously during operation, so that the thread of the locking strip is interlaced with the internal thread of the nut body, thereby preventing the nut from loosening.

[0024] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present utility model: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0025] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A special-shaped nut with a fastening function, comprising a nut body, wherein the nut body is a column, a through hole is provided on the axis of the column, and an internal thread is provided in the through hole, wherein: A square groove is provided on the hole wall of the through hole, and the square groove is arranged parallel to the axis of the through hole; a locking strip is movably arranged in the square groove, one side of the locking strip is an arc-shaped surface, the arc-shaped surface is coaxially arranged with the through hole, the radius of the arc-shaped surface is equal to the radius of the through hole, and a thread matching the internal thread is provided on the arc-shaped surface.

2. A special-shaped nut with a fastening connection function according to claim 1, characterized in that: A pressure ring is arranged at one end of the nut body, and an anti-slip pattern is arranged on a side of the pressure ring away from the nut body.

3. A special-shaped nut with a fastening connection function according to claim 2, characterized in that: A pressing groove is provided on one side of the pressing ring away from the nut body, a pressing plate is arranged in the pressing groove, and the pressing plate is fixedly connected to the locking strip; when the pressing plate fits the pressing groove, the thread and the internal thread are staggered.

Images