CN107956780B

CN107956780B - Waterproof dustproof end nut

Info

Publication number: CN107956780B
Application number: CN201711423298.7A
Authority: CN
Inventors: 闫宝祥; 吕占军; 赵月起; 李树干; 徐秀腾
Original assignee: Tianjin Jingyi Fastener Co ltd
Current assignee: Tianjin Jingyi Fastener Co ltd
Priority date: 2017-12-25
Filing date: 2017-12-25
Publication date: 2024-03-08
Anticipated expiration: 2037-12-25
Also published as: CN107956780A

Abstract

The invention provides a waterproof and dustproof end nut, wherein a concentric flange plate is fixedly arranged at one end of a nut body, an annular shielding structure is fixedly arranged at the other end of the nut body, a waterproof cap is arranged on the shielding structure, and the waterproof cap penetrates out from the middle of the shielding structure. The inner end of the retainer ring and the nut body are integrally formed, a penetrating hole coaxial with the inner hole of the nut body is formed in the middle of the outer end of the retainer ring, the diameter of the inner end of the retainer ring is larger than that of the outer end, the retainer ring is arranged in an arc shape from the inner end to the outer end, and the end part of the waterproof cap is arranged in the inner cavity of the retainer ring. The inner end edge integrated into one piece of hemisphere cap is equipped with annular and sticks up the limit, and annular sticks up the limit and inserts and establish in the retaining ring inner chamber, and annular sticks up the limit external diameter and be greater than the hole diameter of wearing out, and annular sticks up the limit external diameter and is less than retaining ring inner end diameter, and annular sticks up the limit external diameter and is greater than the internal thread diameter in the nut body hole, and annular sticks up the limit outer wall and paste and have the rubber pad. The invention has the advantages of ingenious design, easy installation, good waterproof, dustproof and rust-proof effects and long service life.

Description

Waterproof dustproof end nut

Technical Field

The invention belongs to the technical field of fasteners, and particularly relates to a waterproof and dustproof end nut.

Background

The nut is a part which is screwed with a bolt or a screw rod to play a role in fastening. When the nut is used, the nut is generally screwed on the fixed bolt or screw rod, the parts penetrating through the bolt or screw rod are connected or fastened, and the end part of the bolt or screw rod often penetrates out of the inner hole of the nut, so that the nut is exposed in external water and air environment for a long time, the corrosion of the bolt and the nut is easily caused, and the service life is influenced. Particularly, the nut and bolt connecting structure applied to the relevant parts of the automobile chassis is very easy to enter dust and water, and is easy to rust or break after long-term use, and the relevant parts are easy to fall off to cause the damage of the automobile.

In order to solve the problems in the prior art, a rubber cap is covered on the nut, but the nut is easy to be oxidized and damaged or shake off, and the use effect is poor; there is also a structure in which a metal cap is provided on the nut, but the sealing effect is poor, and the waterproof and dustproof purposes cannot be achieved.

Therefore, how to provide a tip nut with good sealing effect, long service life and waterproof and dustproof effects is a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

The invention mainly aims to provide a waterproof and dustproof end nut, which aims to solve the technical problems in the prior art.

In order to achieve the above purpose, the invention provides a waterproof and dustproof end nut, which comprises a nut body and internal threads arranged in an inner hole of the nut body, wherein one end of the nut body is fixedly provided with a concentric flange, the other end of the nut body is fixedly provided with an annular shielding structure, a waterproof cap is arranged on the shielding structure, and the waterproof cap penetrates out from the middle of the shielding structure.

Further, shielding structure includes retaining ring and wears out the hole, retaining ring inner with nut body integrated into one piece, retaining ring outer end middle part be equipped with nut body hole coaxial's wear out the hole, retaining ring inner diameter is greater than outer end diameter, just the retaining ring is by inner to outer end arc setting, waterproof cap tip is located in the retaining ring inner chamber.

Further, waterproof cap includes the hemisphere cap body, annular perk limit and rubber pad, the internal end edge integrated into one piece of hemisphere cap is equipped with annular perk limit, annular perk limit is inserted and is established in the retaining ring inner chamber, annular perk limit external diameter is greater than wear out hole diameter, annular perk limit external diameter is less than retaining ring inner end diameter, annular perk limit external diameter is greater than internal thread diameter in the nut body hole, annular perk limit is pasted on the outer wall has the rubber pad.

Further, the inner cone is fixedly stuck to the inner cavity of the hemispherical cap body, and the lower end of the inner cone is conical and is contacted with a bolt screwed into the female body of the screw body.

Further, the nut comprises an annular groove and a rubber ring, wherein the outer end face of the flange is provided with the annular groove, the annular groove is coaxial with the inner hole of the nut body, the rubber ring is stuck in the annular groove, and the outer end face of the rubber ring is slightly higher than the end face of the flange.

By applying the technical scheme of the invention, the waterproof cap is arranged in the shielding structure in the nut body processing process, and when the nut body is screwed on the end part of the bolt, the inner end of the waterproof cap is extruded by the bolt, so that the inner end part of the waterproof cap is tightly matched with the shielding structure, the waterproof and dustproof effects are achieved, and the sealing effect is good; and set up the rubber ring on the ring flange terminal surface to can make ring flange and by fixed part carry out the close contact, have dustproof and waterproof function, and the setting of rubber ring can enclose the bolt and establish, and isolated air has further improved rust-resistant ability. The invention has the advantages of simple structure, ingenious design, easy installation, good waterproof, dustproof and rust-proof effects and long service life.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

fig. 1 schematically shows a schematic view of the front view structure of the present invention;

FIG. 2 schematically illustrates a front cross-sectional view of one embodiment of the present invention;

FIG. 3 schematically illustrates a partial enlarged view at A in FIG. 2;

fig. 4 schematically shows a partial enlarged view at B in fig. 2;

FIG. 5 schematically illustrates a front cross-sectional view of another embodiment of the present invention;

wherein the above figures include the following reference numerals:

1, a nut body; 2, an inner hole; 3, internal threads; 4, a flange plate; 5 shielding structure; 51 check rings; 52 pass through the hole; 6, waterproof caps; 61 a hemispherical cap; 62 annular raised edges; 63 rubber pads; 7, an inner cone; 8 annular grooves; and 9 rubber rings.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be capable of being practiced otherwise than as specifically illustrated and described herein.

Furthermore, references to "comprising" and "having" and any variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures.

For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be rotated 90 degrees or at other orientations in different orientations and the spatially relative descriptors used herein interpreted accordingly.

Referring to fig. 1 to 2, the invention provides a waterproof and dustproof end nut, which comprises a nut body 1 and an internal thread 3 arranged in an inner hole 2 of the nut body 1, wherein a concentric flange 4 is fixedly arranged at one end of the nut body 1, the flange 4 and the nut body 1 are integrally formed, an annular shielding structure 5 is fixedly arranged at the other end of the nut body 1, the shielding structure 5 and the nut body 1 are integrally formed, a waterproof cap 6 is arranged on the shielding structure 5, the waterproof cap 6 penetrates out from the middle part of the shielding structure 5, and the end part of a bolt screwed into the nut body 1 is shielded, so that the waterproof and dustproof effects are achieved.

Further, the shielding structure 5 includes a retaining ring 51 and a through hole 52, the inner end of the retaining ring 51 and the nut body 1 are integrally formed, the middle part of the outer end of the retaining ring 51 is provided with the through hole 52 coaxial with the inner hole 2 of the nut body 1, the outer end of the waterproof cap 6 is penetrated outwards through the through hole 52, the diameter of the inner end of the retaining ring 51 is larger than that of the outer end, the retaining ring 51 is arranged in an arc shape from the inner end to the outer end, the end of the waterproof cap 6 is arranged in the inner cavity of the retaining ring 51, and the inner end of the waterproof cap 6 is specifically arranged in the inner cavity of the retaining ring 51.

For the structure of the waterproof cap 6, as shown in fig. 2 and 3, further, the waterproof cap 6 includes a hemispherical cap body 61, an annular raised edge 62 and a rubber pad 63, the edge of the inner end of the hemispherical cap body 61 is integrally formed with the annular raised edge 62, and the annular raised edge 62 is inserted into the inner cavity of the retainer ring 51, so as to realize the installation of the waterproof cap 6. The outer diameter of the annular raised edge 62 is larger than the diameter of the through hole 52, the outer diameter of the annular raised edge 62 is smaller than the diameter of the inner end of the retainer ring 51, and the outer diameter of the annular raised edge 62 is larger than the diameter of the internal thread 3 in the inner hole 2 of the nut body 1, so that the end annular raised edge 62 of the waterproof cap 6 can be arranged in the inner cavity of the shielding structure 5 and cannot deviate outwards from the shielding structure 5 and the inner hole 2 of the nut body 1, and a rubber pad 63 is adhered to the outer wall of the annular raised edge 62. When the nut is used, the bolt is screwed into the nut body 1, and along with the continuous screwing of the bolt, the end part of the bolt extrudes the inner cavity of the hemispherical cap body 61 and is ejected outwards, so that the annular raised edge 62 is in contact seal with the inner edge of the penetrating hole 52 on the shielding structure 5, and the rubber pad 63 is arranged on the annular raised edge 62, so that the inner edge of the penetrating hole 52 is in contact with the rubber pad 63, and a good sealing effect is realized.

The waterproof cap 6 is arranged on the shielding structure 5, and firstly, the shielding structure 5 is arranged at the end part of the nut body 1 in a stamping process; then, the waterproof cap 6 is inserted into the shielding structure 5 along the inner hole 2 of the nut body 1, so that the hemispherical cap body 61 is ejected out of the through hole 52, and the annular tilted edge 62 is arranged in the shielding structure 5; finally, a thread is arranged in the inner hole 2 of the nut body 1, and the inner diameter of the thread is smaller than the outer diameter of the annular tilted edge 62, so that the annular tilted edge 62 can exist in the inner cavity of the shielding structure 5.

In order to make this end nut used in a wider range, as shown in fig. 5, further, the end nut further comprises an inner cone 7, wherein the inner cavity of the hemispherical cap body 61 is fixedly stuck with the inner cone 7, one end of the inner cone 7 is matched with the inner cavity of the hemispherical cap body 61, the hemispherical cap body 61 has a supporting function through adhesion and fixation, the other end of the inner cone 7 is provided with a frustum structure, and the end nut can be made of deformable plastic or rubber materials, specifically, the lower end of the inner cone 7 is conical and contacts with a bolt screwed into the nut body 1. Therefore, when the bolt is screwed into the nut body 1, the inner cone 7 can be extruded along with the continuous screwing of the bolt, and the inner cone 7 extrudes the hemispherical cap 61 outwards, so that the annular raised edge 62 is in contact with the shielding structure 5 to realize the sealing effect.

In order to improve the sealing effect, the flange 4 is in close contact with the part to be fixed, as shown in fig. 2 and 4, and further, the sealing device further comprises an annular groove 8 and a rubber ring 9, wherein the annular groove 8 is formed in the outer end face of the flange 4, the annular groove 8 is concentric with the inner hole 2 of the nut body 1, the annular groove 8 is arranged around the outer ring of the inner hole 2 of the nut body 1, and when the sealing device is specifically installed, the rubber ring 9 is stuck in the annular groove 8, and the outer end face of the rubber ring 9 is slightly higher than the end face of the flange 4. When specifically using, nut body 1 is twisted and is established on the bolt, and ring flange 4 lower extreme contacts with waiting to fix the part, and the rubber ring 9 that sets up can form the buffering between ring flange 4 and waiting to fix the part to enclose the bolt through rubber ring 9, can form relative sealed space between ring flange 9, ring flange 4 and waiting to fix the part, not only can realize waterproof dirt-proof sealed effect, can the isolated air moreover, further improve the rust-resistant effect. And the setting of rubber ring 9 can play shock attenuation buffering effect, reduces the friction damage of ring flange 4 and waiting fixed part.

By applying the technical scheme of the invention, the waterproof cap 6 is arranged in the shielding structure 5 in the processing process of the nut body 1, and when the nut body 1 is screwed on the end part of the bolt, the inner end of the waterproof cap 6 is extruded by the bolt, so that the inner end part of the waterproof cap 6 is tightly matched with the shielding structure 5, and the waterproof and dustproof effect is achieved, and the sealing effect is good; and set up rubber ring 9 on ring flange 4 terminal surface to can make ring flange 4 and by fixed part carry out close contact, have dustproof and waterproof function, and the setting of rubber ring 9 can enclose the bolt and establish, and isolated air has further improved rust-resistant ability. The invention has the advantages of simple structure, ingenious design, easy installation, good waterproof, dustproof and rust-proof effects and long service life.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a waterproof dustproof end nut, includes nut body and the internal thread of setting in nut body hole, its characterized in that: the nut comprises a nut body, and is characterized in that a concentric flange plate is fixedly arranged at one end of the nut body, an annular shielding structure is fixedly arranged at the other end of the nut body, a waterproof cap is arranged on the shielding structure, and the waterproof cap penetrates out from the middle of the shielding structure;

the shielding structure comprises a retainer ring and a penetrating hole, wherein the inner end of the retainer ring and the nut body are integrally formed, the middle part of the outer end of the retainer ring is provided with the penetrating hole coaxial with the inner hole of the nut body, the diameter of the inner end of the retainer ring is larger than that of the outer end, the retainer ring is arranged in an arc shape from the inner end to the outer end, and the end part of the waterproof cap is arranged in the inner cavity of the retainer ring;

the waterproof cap comprises a hemispherical cap body, an annular raised edge and a rubber pad, wherein the annular raised edge is integrally formed at the inner end edge of the hemispherical cap body, the annular raised edge is inserted into the inner cavity of the retainer ring, the outer diameter of the annular raised edge is larger than the diameter of the through hole, the outer diameter of the annular raised edge is smaller than the diameter of the inner end of the retainer ring, the outer diameter of the annular raised edge is larger than the diameter of an internal thread in the inner hole of the nut body, and the rubber pad is adhered to the outer wall of the annular raised edge;

the inner cone is fixedly stuck to the inner cavity of the hemispherical cap body, and the lower end of the inner cone is conical and is contacted with a bolt screwed into the female body of the hemispherical cap body.

2. The waterproof and dustproof end nut of claim 1, wherein: the nut comprises a nut body, and is characterized by further comprising an annular groove and a rubber ring, wherein the outer end face of the flange is provided with the annular groove, the annular groove and an inner hole of the nut body are coaxial, the rubber ring is stuck in the annular groove, and the outer end face of the rubber ring is slightly higher than the end face of the flange.