CN110145531A - A cap-shaped nut with good anti-theft performance - Google Patents

Abstract

The invention discloses a cap-shaped nut with good anti-theft performance, which comprises a nut body, a nut upper cover, a nut tightening part, and a twist-off connector. The nut body is cylindrical with a smooth outer surface. The inner center of the nut body is provided with a nut internal thread connecting cavity, the upper end of the nut body is provided with a nut upper cover, the nut upper cover is hemispherical, and the upper end of the nut upper cover is provided with Twist off the connecting piece, the upper end of the twisting off connecting piece is provided with a nut tightening piece, the present invention sets the twisting off connecting piece and the nut tightening piece on the upper end of the nut, and twists the nut through the nut tightening piece, when the nut is tightened, Continue to twist the nut tightening part until the connection between the connecting part and the upper cover of the nut is broken. A nut without a nut tightening part has no place to apply force to open the nut. Once the nut is installed, it is difficult to disassemble , improve security, improve anti-theft performance, and low production cost.

Description

A cap-shaped nut with good anti-theft performance

【Technical field】

The invention relates to the technical field of nuts, in particular to the technical field of nuts with good anti-theft performance.

【Background technique】

A nut is a nut, a part that is screwed together with a bolt or a screw for fastening. A component that must be used in all manufacturing machinery is divided into several types such as carbon steel, stainless steel, and non-ferrous metals according to different materials. A nut is a fixing tool with a hole in the center and threads on the inside of the hole. Nuts are often shared with screws of the same size to fix the relevant joints. The cap nut is a kind of nut. As the name suggests, the cap nut is a hexagonal nut with a cover. The function of this cover is to fasten the exposed part of the outside to prevent moisture or other corrosive substances from entering the inside to prevent The role of rust, thereby improving the service life of itself and the connecting parts, but the anti-theft performance of the existing cap nuts is not good, the existing cap nuts can be easily disassembled, which is easy to cause economic losses, and some special parts need anti-theft Parts, existing acorn nuts cannot meet.

【Content of invention】

The purpose of the present invention is to solve the problems in the prior art, and propose a cap-shaped nut with good anti-theft performance, which can improve the anti-theft performance of the nut. Once the nut is installed, it is difficult to be disassembled, which improves safety.

In order to achieve the above object, the present invention proposes a cap-shaped nut with good anti-theft performance, including a nut body, a nut upper cover, a nut tightening part, and a twist-off connector. The nut body is smooth on the outside surface. Cylindrical, the inner center of the nut body is provided with a nut internal thread connection cavity, the upper end of the nut body is provided with a nut upper cover, the nut upper cover is hemispherical, and the nut The upper end of the upper cover is provided with a screw-off connector, and the upper end of the screw-off connector is provided with a nut tightening member.

Preferably, the twist-off connector is rounded, and the connection area between the lower end of the twist-off connector and the upper cover of the nut is smaller than the connection area between the upper end of the twist-off connector and the nut tightening member.

Preferably, the connection point between the twisted connector and the upper cover of the nut is the thinnest part of the whole nut, and the connection point between the screwed nut tightening member and the upper cover of the nut is the thinnest point. The required torque is greater than that required to tighten the nut body to the bolt.

Preferably, the upper end of the nut tightening member is provided with an outer bayonet part of a wrench that can cooperate with a bayonet wrench, and the cross section of the outer bayonet part of the wrench is a regular hexagon or a regular quadrilateral.

Preferably, the center of the upper end of the nut tightening member is provided with an inner hexagonal wrench bay that can be matched with an inner hexagonal wrench.

Preferably, the centers of the nut body, the nut upper cover, the nut tightening member and the twist-off connector are on the same axis, and the nut body, the nut upper cover, the nut tightener, the twist-off connection coaxial setting.

Preferably, the nut body and the nut upper cover are integrally formed.

Preferably, the nut tightening part and the twist-off connecting part are integrally formed.

The beneficial effect of the cap-shaped nut with good anti-theft performance of the present invention: the present invention sets a screw-off connecting piece and a nut tightening piece on the upper end of the nut, and twists the nut through the nut tightening piece. After the nut is tightened, continue to twist The nut is tightened until the connection between the connecting piece and the upper cover of the nut is broken. There is no place for the nut without the nut tightening piece to be forced to open the nut. Once the nut is installed, it is difficult to disassemble, which improves safety. Sex, improve anti-theft performance, low production cost.

The features and advantages of the present invention will be described in detail with reference to the accompanying drawings.

【Description of drawings】

Fig. 1 is a schematic front view of the structure of a cap-shaped nut with good anti-theft performance of the present invention;

Fig. 2 is the front view cross-sectional view of a cap-shaped nut knot with good anti-theft performance of the present invention;

Fig. 3 is a schematic top view of the structure of a cap-shaped nut with good anti-theft performance according to the present invention.

In the figure: 1-Nut body, 2-Nut upper cover, 3-Nut tightening parts, 4-Twisting connector, 11-Nut internal thread connection cavity, 31-Wrench outer bayonet part, 32-Inner hexagon The wrench stuck in the mouth.

【Detailed ways】

Referring to Fig. 1, Fig. 2 and Fig. 3, a cap-shaped nut with good anti-theft performance of the present invention includes a nut body 1, a nut upper cover 2, a nut tightening part 3, and a screw-off connector 4. The cap body 1 is a cylindrical shape with a smooth outer surface. The inner center of the nut body 1 is provided with a nut internal thread connection cavity 11. The upper end of the nut body 1 is provided with a nut upper cover 2. The nut body 1 is provided with a nut upper cover 2. The cap upper cover 2 is hemispherical, and the upper end of the nut upper cover 2 is provided with a twist-off connector 4, and the upper end of the twist-off connector 4 is provided with a nut tightening member 3, and the twist-off connector 4 is Rounded table type, the connection area between the lower end of the twisted connector 4 and the nut upper cover 2 is smaller than the connection area between the upper end of the twisted connector 4 and the nut tightening member 3, and the twisted connector 4 The connection point between the nut upper cover 2 is the thinnest part of the whole nut, and the torque required to twist off the connection between the nut tightening part 3 and the nut upper cover 2 is greater than that of the nut. The torque required for tightening between the body 1 and the bolt, the upper end of the nut tightening member 3 is provided with a wrench outer bayonet part 31 that can cooperate with a bayonet wrench, and the cross section of the wrench outer bayonet part 31 is regular hexagonal Shaped or regular quadrilateral, the center of the upper end of the nut tightening part 3 is provided with an Allen wrench bayonet cavity 32 that can be matched with an Allen wrench, the nut body 1, the nut upper cover 2, the nut tightening part 3, the screw nut The center of the broken connector 4 is on the same axis, the nut body 1, the nut upper cover 2, the nut tightening member 3, and the twisted connector 4 are coaxially arranged, and the nut body 1 and the nut The upper cover 2 is integrally formed, and the nut tightening part 3 and the screw-off connecting part 4 are integrally formed.

Working process of the present invention:

In the working process of the cap-shaped nut with good anti-theft performance, align the nut internal thread connection cavity 11 of the nut body 1 with the bolt to be fixed, and clamp the wrench on the upper end of the nut tightening part 3 with a wrench. The bayonet part 31 or the inner hexagonal wrench bayonet cavity 32, tighten the nut body 1 with a wrench, after the nut body 1 is tightened, continue to rotate the nut tightening part 3 until the connection between the lower end of the connecting part 4 and the nut upper cover 2 is unscrewed The connection of the nut is disconnected, and the nut without the nut tightening part has no place to be forced to open the nut, and the anti-theft performance of the nut is strong.

The above-mentioned embodiment is an illustration of the present invention, not a limitation of the present invention, and any solution after a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims (8)

1. a kind of good cap nut of anti-theft performance, it is characterised in that: twisted including nut body (1), nut upper cover (2), nut Tight part (3) is twisted into two parts connector (4), and the nut body (1) is the cylindrical type of smooth outer surface, the nut body (1) Interior center is equipped with nut internal screw thread connecting cavity (11), and the nut body (1) upper end is equipped with nut upper cover (2), the spiral shell Cap upper cover (2) is dome-type, and nut upper cover (2) upper end is equipped with and twists into two parts connector (4), and described twists into two parts connector (4) Upper end is equipped with nut tightening piece (3).

2. a kind of cap nut that anti-theft performance is good as described in claim 1, it is characterised in that: described twists into two parts connector It (4) is rounding bench-type, the connection area twisted into two parts between connector (4) lower end and nut upper cover (2), which is less than to twist into two parts, to be connect Connection area between part (4) upper end and nut tightening piece (3).

3. a kind of cap nut that anti-theft performance is good as described in claim 1, it is characterised in that: described twists into two parts connector (4) be at the tie point between nut upper cover (2) whole nut diameter most thin place, nut is tightened the part (3) with Connection twists into two parts required torsion and is greater than and will tighten required torsion between nut body (1) and bolt between nut upper cover (2).

4. a kind of cap nut that anti-theft performance is good as described in claim 1, it is characterised in that: the nut tightening piece (3) upper end is equipped with the spanner wild card oral area (31) that can cooperate with bayonet spanner, described spanner wild card oral area (31) cross section For regular hexagon or regular quadrangle.

5. a kind of cap nut that anti-theft performance is good as described in claim 1, it is characterised in that: the nut tightening piece (3) upper end center is equipped with the allen wrench bayonet chamber (32) that can cooperate with allen wrench.

6. a kind of cap nut that anti-theft performance is good as described in claim 1, it is characterised in that: the nut body (1), Nut upper cover (2), nut tightening piece (3) twist into two parts the center of connector (4) on same axis, the nut body (1), nut upper cover (2), nut tightening piece (3), twist into two parts connector (4) coaxial arrangement.

7. a kind of cap nut that anti-theft performance is good as described in claim 1, it is characterised in that: the nut body (1) It is integrally formed between nut upper cover (2).

8. a kind of cap nut that anti-theft performance is good as described in claim 1, it is characterised in that: the nut tightening piece (3) it and twists into two parts and is integrally formed between connector (4).