CN203488524U - Nut - Google Patents

Abstract

The utility model discloses a nut which comprises a nut body with threads, a screw head used for screwing the nut, and a screwing force torque security ring which is used for connecting the nut body and the screw head and can be fractured when receiving preset torque. The nut enables a user to visually judge whether the nut is fastened in place. The nut is simple in structure, simple and convenient to operate, reliable in performance and low in cost.

Description

nut

technical field

The utility model relates to a fastening nut.

Background technique

Nuts are commonly used fasteners and are widely used in the connection of various mechanical devices. However, in actual use, it is often difficult for the installer to determine whether the nuts have been tightened in place, so it is difficult to ensure that the bolts and nuts will not loosen automatically during long-term use. And in some cases, the loosening and falling off of nuts can cause serious accidents, causing heavy casualties and economic losses.

Therefore, there is still a lack of a nut that can enable the user to judge whether it has been fastened in place at present.

Utility model content

In view of the above-mentioned defects in the prior art, the problem to be solved by the present invention is to provide a nut that allows the installer to determine whether it has been fastened in place.

In order to solve the above problems, the utility model provides a nut, which includes a threaded nut body, a tightening head for tightening the nut, and a screw for connecting the nut body and the tightening head and being subjected to Tightening torque guarantee ring that breaks at predetermined torque.

Preferably, the specification of the thread of the nut body is M12×1.25.

The beneficial effect of the nut of the utility model is that the user can intuitively judge whether the nut has been fastened in place, and the nut of the utility model has simple structure, easy operation, reliable performance and low cost.

Description of drawings

Fig. 1 is the perspective view of the nut of the present utility model;

Fig. 2 is the orthographic projection figure of the nut of the present utility model;

Fig. 3 is a sectional view of the nut of the present invention.

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

As shown in Figures 1 to 3, the nut of the present invention includes a nut body 2 with an internal thread, a hexagonal tightening head 1 for tightening the nut, and a tightening torque for connecting the nut body 2 and the tightening head 1 Guaranteed Ring 3. As shown in FIG. 3 , compared with the nut body 2 and the hexagonal tightening head 1 , the tightening torque guarantee ring 3 has a thinner wall, and will break when subjected to a predetermined torque, so that the nut body 2 and the tightening head 1 are separated.

In a preferred embodiment of the present invention, the thread of the nut body 2 is a fine thread, and its specification can be, for example, M12×1.25. Since the pitch of the fine thread is small, it has better anti-loosening performance.

In order to further improve the tightening effect of the nut, in a preferred embodiment of the present invention, when the nut of the present invention is used to connect connection materials, a lock washer (not shown in the figure) is provided between the nut body 2 and the connection material out), the lock washer can be, for example, the TOP-LOCK lock washer of Sanke Machinery (Dalian) Machinery Co., Ltd.

The specific size of the tightening torque assurance ring of the utility model (such as the thickness and height of the wall) needs to be obtained by those skilled in the art according to the actual production according to the needs, so as to ensure that the tightening torque is within the required range.

When using the nut of the present utility model, bolts, connecting materials, lock washers, and nuts need to be installed earlier, and the hexagon head 1 is tightened with a sleeve to cover and tighten the nut. The barrel will not block the nut body 2. When the torque reaches the design requirements, the tightening hex head 1 will be disconnected from the tightening torque guarantee ring 3, and the nut body 2 will be tightened on the bolt according to the required torque, which is very reliable and judged by the user. It's pretty intuitive.

Certainly, what is described above is the preferred embodiment of the present utility model, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can be made without departing from the principle of the present utility model. And retouching are also regarded as the scope of protection of the present utility model.

Claims (2)

1. a nut, is characterized in that, comprises screwed nut body, for tightening the tappet head of described nut, and guarantees ring for connect screw-down torque described nut body and described tappet head and that rupture when being subject to predetermined torque.

2. nut as claimed in claim 1, is characterized in that, the specification of the screw thread of described nut body is M12 * 1.25.

Images