CN210830089U

CN210830089U - Anti-loosening and dustproof nut

Info

Publication number: CN210830089U
Application number: CN201921836546.5U
Authority: CN
Inventors: 黄志刚
Original assignee: Quanzhou Yougang Machinery Parts Co ltd
Current assignee: Quanzhou Yougang Machinery Parts Co ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-06-23
Anticipated expiration: 2029-10-29

Abstract

The utility model provides a locking dustproof nut, includes the nut body, and this nut body is equipped with the screw hole that link up from top to bottom, and the upper end internal stability of this screw hole has set firmly the rubber circle, and the inner peripheral surface of this rubber circle is the arc surface of indent, the aperture of rubber circle is crescent from top to bottom, and the bottom size in the aperture of this rubber circle is equivalent with the size of screw hole. The utility model discloses novel structure, design benefit, when the nut is twisted tight fit with bolt or screw rod, the top of bolt or screw rod stretches out outside the rubber circle gradually, because the inner peripheral surface of rubber circle is the arc surface of indent, and the aperture of rubber circle is crescent from top to bottom, consequently, after the nut is screwed up, the rubber circle can tightly embrace bolt or screw rod, prevent that the dust from getting into, of course, because the shape design of rubber circle, make the assembly relation between rubber circle and bolt or the screw rod be interference fit, even the nut is shaking great occasion work, the nut can not take place not hard up yet, good locking effect is possessed.

Description

Anti-loosening and dustproof nut

Technical Field

The utility model relates to a nut, specific saying so indicates a locking dustproof nut.

Background

The nut is a part which is screwed together with the bolt or the screw rod to play a role in fastening. The application range of nut is extremely extensive, and it is applied to various cars, mechanical equipment, ship industry, track traffic etc. currently, the more ordinary nut that is of world application, but in some great application occasions of vibrations, the nut often can take place the phenomenon that relaxes even drops, for example use the nut on engineering machine tool, this has just led to the fact the problem that has the potential safety hazard. Moreover, most of nuts are applied to occasions with more dust, the existing nuts do not have the dustproof effect, and dust can enter the matching parts of the nuts and the bolts or the screws, so that the matching precision of the nuts and the bolts or the screws is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a locking dustproof nut, its main aim at overcome current nut and do not possess locking, dirt-proof problem when screwing up the cooperation with bolt or screw rod.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model provides a locking dustproof nut, includes the nut body, and this nut body is equipped with the screw hole that link up from top to bottom, and the upper end internal stability of this screw hole has set firmly the rubber circle, and the inner peripheral surface of this rubber circle is the arc surface of indent, the aperture of rubber circle is crescent from top to bottom, and the bottom size in the aperture of this rubber circle is equivalent with the size of screw hole.

Further, the threaded hole comprises a mounting hole portion and a threaded hole portion which are vertically penetrated, the hole diameter of the mounting hole portion is larger than that of the threaded hole portion, a step surface is formed at the joint of the mounting hole portion and the threaded hole portion, the bottom surface of the rubber ring is fixedly connected with the step surface, the outer peripheral surface of the rubber ring is fixedly connected with the inner peripheral surface of the mounting hole portion, and the bottom of the hole diameter of the rubber ring is equal to the size of the threaded hole portion.

Furthermore, the rubber ring is connected with the mounting hole part in a vulcanization mode.

Furthermore, the inner peripheral surface of the rubber ring is provided with threads.

From the above description of the present invention, compared with the prior art, the present invention has the following advantages: the utility model discloses novel structure, design benefit, when the nut is twisted tight fit with bolt or screw rod, the top of bolt or screw rod stretches out outside the rubber circle gradually, because the inner peripheral surface of rubber circle is the arc surface of indent, and the aperture of rubber circle is crescent from top to bottom, consequently, after the nut is screwed up, the rubber circle can tightly embrace bolt or screw rod, prevent that the dust from getting into, of course, because the shape design of rubber circle, make the assembly relation between rubber circle and bolt or the screw rod be interference fit, even the nut is shaking great occasion work, the nut can not take place not hard up yet, good locking effect is possessed.

Drawings

Fig. 1 is a schematic view of the present invention.

Fig. 2 is a schematic view of the nut body of the present invention.

Fig. 3 is a schematic top view of the present invention.

Detailed Description

Refer to fig. 1 and 3. The utility model provides a locking dustproof nut, includes nut body 1, and this nut body 1 is equipped with the screw hole that link up from top to bottom, and the upper end internal stability of this screw hole has set firmly rubber circle 3, and the inner peripheral surface of this rubber circle 3 is the arc surface of indent, the aperture of rubber circle 3 from top to bottom crescent, the bottom size in the aperture of this rubber circle 3 is equivalent with the size of screw hole.

Refer to fig. 1 to 3. The threaded hole comprises a mounting hole part 21 and a threaded hole part 22 which are vertically penetrated, the hole diameter of the mounting hole part 21 is larger than that of the threaded hole part 22, a step surface 4 is formed at the joint of the mounting hole part 21 and the threaded hole part 22, the bottom surface of the rubber ring 3 is fixedly connected with the step surface 4, the outer peripheral surface of the rubber ring 3 is fixedly connected with the inner peripheral surface of the mounting hole part 21, and the bottom of the hole diameter of the rubber ring 3 is equal to the size of the threaded hole part 22. The rubber ring 3 is connected with the mounting hole part 21 in a vulcanization mode, and the inner circumferential surface of the rubber ring 3 is provided with threads 31, and the threads 31 can be matched with threads of bolts or screws.

Refer to fig. 1 and 3. The design principle of the utility model is as follows: when nut body 1 and bolt or screw rod are screwed up the tight fit, the top of bolt or screw rod stretches out outside rubber circle 3 gradually, because the inner peripheral surface of rubber circle 3 is the arc surface of indent, and the aperture of rubber circle 3 from top to bottom crescent gradually, consequently when nut body 1 screws up the back, bolt or screw rod can be embraced closely to rubber circle 3, prevent that the dust from getting into. Certainly, because the shape design of rubber circle 3 for the assembly relation between rubber circle 3 and the bolt or the screw rod is interference fit, even nut body 1 works in the great occasion of vibrations, nut body 1 can not take place not hard up yet, possesses good locking effect.

The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims

1. The utility model provides a locking dustproof nut which characterized in that: including the nut body, the screw hole that link up about this nut body is equipped with, and the upper end internal stability of this screw hole has set firmly the rubber circle, and the inner peripheral surface of this rubber circle is the arc surface of indent, the aperture of rubber circle is crescent from top to bottom, and the bottom size in the aperture of this rubber circle is equivalent with the size of screw hole.

2. The anti-loose dust-proof nut as claimed in claim 1, wherein: the threaded hole comprises a mounting hole part and a threaded hole part which are vertically communicated, the aperture of the mounting hole part is larger than that of the threaded hole part, a step surface is formed at the joint of the mounting hole part and the threaded hole part, the bottom surface of the rubber ring is fixedly connected with the step surface, the outer peripheral surface of the rubber ring is fixedly connected with the inner peripheral surface of the mounting hole part, and the bottom of the aperture of the rubber ring is equal to the size of the threaded hole part.

3. The anti-loose dust-proof nut as claimed in claim 2, wherein: the rubber ring is connected with the mounting hole part in a vulcanization mode.

4. The anti-loose dust-proof nut as claimed in claim 1, wherein: the inner peripheral surface of the rubber ring is provided with screw teeth.