Anti-falling self-locking metal screw cap

Abstract

An anti-falling self-locking metal screw cap comprises a screw cap body, a locking anti-falling device and an unlocking button. A threaded through hole is formed in the center of the screw cap body, a round hole is formed in one side, and a conical hole communicating the threaded through hole with the round hole is formed between the threaded through hole and the round hole. The locking anti-falling device comprises a return spring, a metal component and a locking component, the return spring and the metal component are sequentially placed in the round hole of the screw cap body from bottom to top, the locking component is placed in the conical hole, a rectangular groove and a rod piece are arranged in the metal component, the locking component is connected to the rod piece, and the locking component is connected to the rod piece. The locking component can move in the taper hole through stretching and retracting of the return spring. The unlocking button is arranged on the top of the metal component. The screw cap moves through mutual traction of the return spring, the metal component and the locking component, locking and unlocking of the locking anti-falling device are controlled, stripes are arranged on the contact face, the effect is more stable, and the screw cap cannot automatically fall off once being connected; the structure is simple, use is convenient, and performance is stable.

Description

Technical field:

[0001] The utility model relates to the field of hardware parts, in particular to a fastening device, and in particular to an anti-falling self-locking metal screw nut. Background technology:

[0002] The nut is also called the nut. The bolt and the nut are connected by a spiral line between them. Through the spiral, the spiral motion of the nut is converted into a linear motion along the axis of the bolt. The fastening and removal of the connecting parts are achieved by tightening and loosening the screw.

[0003] Nuts are prone to falling off due to the effects of force during use, especially in a dynamic load environment. Although there are methods such as top locking, direct welding, and anti-falling locking to prevent falling off, the nuts need to be used with auxiliary tools or have a complex structure, which is inconvenient to use. Summary of the invention:

[0004] In order to solve the above technical problems, the utility model discloses an anti-dropping self-locking metal screw nut. The utility model is suitable for various working environments and has the advantages of simple structure, convenient use, stable performance and wide application range.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides an anti-dropping self-locking metal nut, which comprises a nut body, a locking anti-dropping device and an unlocking device; a threaded through hole is provided in the center of the nut body, a round hole is provided on one side, a tapered hole is provided inside the nut body and between the threaded through hole and the round hole, and the tapered hole communicates with the threaded through hole and the round hole; the locking anti-dropping device is provided inside the round hole and the tapered hole, the locking anti-dropping device comprises a return spring, a metal component and a locking component, the return spring and the metal component are placed in the round hole of the nut body in sequence from bottom to top, a rectangular groove is provided inside the metal component, and a rod is provided in the rectangular groove; the locking component is placed in the tapered hole of the nut body, the locking component is connected to the rod, the locking component is connected to the metal component through the rod, and the locking component can move in the tapered hole through the expansion and contraction of the return spring; the unlocking device comprises an unlocking button, and the unlocking button is provided on the top of the metal component.

[0007] The tapered hole tapers from small to large from the threaded through hole to the round hole.

[0008] The front part of the locking component is cylindrical, and the rear part is rectangular. The rectangular rear part is provided with an anchor hole, and the metal component is connected with the locking component through a rod passing through the anchor hole.

[0009] The outer diameter of the rod is smaller than the inner diameter of the anchor hole.

[0010] The front end of the locking component and the contact surface of the screw of the nut body are provided with stripes.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] Compared with traditional technology, the anti-falling self-locking metal nut controls the locking and unlocking of the anti-falling device by the mutual traction and movement of the return spring, metal component and locking component, and arranges stripes on the contact surface to make the effect more stable. Once connected, it will not fall off automatically. It has a simple structure, is easy to use, has stable performance and a wide range of applications. Description of the drawings:

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 It is a three-dimensional internal structure schematic diagram of the utility model;

[0015] Figure 3 It is a cross-sectional view of the structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the locking and anti-falling device and the unlocking device of the utility model;

[0017] Figure 5 It is a schematic diagram of the structure of the locking component of the utility model.

[0018] Reference numerals in the figures:

[0019] 1-screw nut body, 2-return spring, 3-metal component, 4-rectangular groove, 5-unlocking button, 6-conical hole, 7-rod, 8-locking component, 9-anchor hole. Specific implementation method:

[0020] The present invention is further described below in conjunction with specific implementation methods. The specific implementation methods are further descriptions of the principles of the present invention and do not limit the present invention in any way. Technologies identical or similar to the present invention do not exceed the scope of protection of the present invention.

[0021] See also Figure 1-Figure 5The utility model provides a self-locking metal nut that prevents falling off, and the nut includes a nut body 1, a locking and anti-falling device, and an unlocking device. A threaded through hole is provided in the center of the nut body 1, and a round hole is provided on one side. A tapered hole 6 is provided inside the nut body 1 and between the threaded through hole and the round hole. The tapered hole 6 connects the threaded through hole and the round hole, and the tapered hole 6 tapers from small to large from the threaded through hole to the round hole. The locking and anti-falling device is provided inside the round hole and the tapered hole 6. The locking and anti-falling device includes a return spring 2, a metal component 3, and a locking component 8. The return spring 2 and the metal component 3 are placed in the round hole of the nut body 1 from bottom to top in sequence. A rectangular groove 4 is provided inside the metal component 3, and a rod 7 is provided inside the rectangular groove 4. A locking member 8 is placed in the tapered hole 6 of the nut body 1. The locking member 8 is connected to the rod 7. The locking member 8 is connected to the metal member 3 through the rod 7. In this embodiment, the front part of the locking member 8 is cylindrical and the rear part is rectangular. The rectangular rear part is provided with an anchor hole 9. The metal member 3 is connected to the locking member 8 through the anchor hole 9 through the rod 7. The outer diameter of the rod 7 is smaller than the inner diameter of the anchor hole 9, and has a certain mobility. The front end of the locking member 8 and the screw contact surface of the nut body 1 are provided with stripes, so that the anti-falling effect is better. The locking member 8 can move in the tapered hole 6 through the expansion and contraction of the return spring 2. The locking member 8 realizes the distance between the locking member 8 and the screw contact surface through the expansion and contraction of the return spring 2, controls the locking and unlocking of the locking anti-falling device, and the return spring 2 pushes the metal member 3 to move upward, driving the locking member 8 to move toward the threaded through hole in the center of the nut body 1. The locking member 8 contacts the screw, thereby realizing the automatic locking of the nut to prevent falling off. The unlocking device includes an unlocking button 5, which is arranged on the top of the metal component 3. Pressing the unlocking button 5 causes the metal component 3 to move downward, and the rod 7 of the metal component 3 drives the locking component 8 to move away from the threaded through hole in the center of the nut body 1, thereby realizing the anti-falling unlocking of the nut.

Claims

1. An anti-drop self-locking metal screw nut, characterized by: The nut comprises a nut body (1), a locking and anti-falling device, and an unlocking device; a threaded through hole is provided at the center of the nut body (1), and a round hole is provided at one side; a tapered hole (6) is provided inside the nut body (1) and between the threaded through hole and the round hole; the tapered hole (6) communicates with the threaded through hole and the round hole; the locking and anti-falling device is provided inside the round hole and the tapered hole (6); the locking and anti-falling device comprises a return spring (2), a metal component (3), and a locking component (8); the return spring (2) is placed in the round hole of the nut body (1) from bottom to top; ), a metal component (3), a rectangular groove (4) is arranged inside the metal component (3), a rod (7) is arranged inside the rectangular groove (4); a locking component (8) is placed in the tapered hole (6) of the nut body (1), the locking component (8) is connected to the rod (7), the locking component (8) is connected to the metal component (3) through the rod (7), and the locking component (8) can move in the tapered hole (6) through the expansion and contraction of the return spring (2); the unlocking device comprises an unlocking button (5), and the unlocking button (5) is arranged on the top of the metal component (3).

2. The anti-drop self-locking metal screw nut according to claim 1 is characterized in that: The tapered hole (6) tapers from small to large from the threaded through hole to the circular hole.

3. The anti-drop self-locking metal screw nut according to claim 1 is characterized in that: The locking component (8) has a cylindrical front portion and a rectangular rear portion. The rectangular rear portion is provided with an anchor hole (9). The metal component (3) is connected to the locking component (8) via a rod (7) passing through the anchor hole (9).

4. The anti-drop self-locking metal screw nut according to claim 1 is characterized in that: The outer diameter of the rod (7) is smaller than the inner diameter of the anchor hole (9).

5. The anti-drop self-locking metal screw nut according to claim 1, characterized in that: The front end of the locking component (8) and the screw contact surface of the screw nut body (1) are provided with stripes.

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