CN213808400U

CN213808400U - Screw convenient to detach after rusted

Info

Publication number: CN213808400U
Application number: CN202022742793.8U
Authority: CN
Inventors: 黄忠才; 黄浩
Original assignee: Guiyang Gaoxin Taifeng Aerospace Science And Technology Co ltd
Current assignee: Guiyang Gaoxin Taifeng Aerospace Science And Technology Co ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-07-27
Anticipated expiration: 2030-11-24

Abstract

The utility model discloses a screw convenient to dismantle after rust, which comprises a screw, a nut and an expansion part, be equipped with the external screw thread with nut internal thread adaptation on the screw rod of screw, be equipped with the hole of keeping away from screw nut end opening on the screw rod of screw, be equipped with many expansion deformation grooves parallel with the screw axis along its circumference even interval on the screw rod of screw, expansion deformation groove and hole intercommunication, and its one end extends to the middle part of corresponding nut, the other end extends to the terminal surface of screw rod, be equipped with the round hole on the screw rod that the middle part corresponds in the nut, expansion deformation groove tip extends to in the round hole, the hole bottom is equipped with the internal thread, the internal thread extends to in corresponding nut, the expansion part stretches into the hole and makes the screw rod of screw expand from the opening, be equipped with the external screw thread with the internal thread adaptation of hole on the expansion part; after the thread of the fastener on the screw rod of the screw is damaged, the nut can be taken down easily, and the expansion fastener can prevent the nut from loosening.

Description

Screw convenient to detach after rusted

Technical Field

The utility model relates to a connecting piece, in particular to screw of convenient dismantlement after rust ization.

Background

The screw is indispensable industry requisite in daily life: such as tiny screws for cameras, glasses, clocks, electronics, etc.; screws for televisions, electric appliances, musical instruments, furniture, etc.; large screws and nuts are used for engineering, buildings and bridges; transportation equipment, airplanes, electric cars, automobiles, and the like are used with screws of different sizes. The screw has an important task in industry, as long as the earth has industry, the function of the screw is always important, after the screw is matched with the nut to be connected with parts, most of threads on a screw rod of the screw are exposed in the air and rusted, the rusted threads can be damaged, and the nut is difficult to unscrew.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a screw which is easy to detach after rust removal, and the nut can be easily unscrewed even after the tooth line rust of the screw is damaged.

The utility model aims at realizing through the following technical scheme:

the utility model provides a convenient screw of dismantling behind rust ization, includes screw, nut and inflation piece, be equipped with the external screw thread with the internal screw thread adaptation of nut on the screw rod of screw, be equipped with on the screw rod of screw and keep away from screw nut end open-ended hole, be equipped with many expansion deformation grooves parallel with the screw axis along its even interval of circumference on the screw rod of screw, expansion deformation groove and hole intercommunication, and its one end extends to the middle part that corresponds the nut, and the other end extends to the terminal surface of screw rod, is equipped with the round hole on the screw rod that the middle part corresponds in the nut, and expansion deformation groove tip extends to in the round hole, and the hole bottom is equipped with the internal thread, and the internal thread extends to in corresponding the nut, the inflation piece stretches into the hole and makes the screw rod inflation of screw from the opening, be equipped with the external screw thread with the internal screw thread adaptation of hole on the inflation piece.

Further, the inflation piece includes the minor diameter section between two major diameter sections and two major diameter sections, the cover is equipped with cyclic annular serpentine spring on the minor diameter section, and the external diameter is greater than the internal diameter of hole after serpentine spring expandes, is equipped with the external screw thread with the internal thread adaptation of hole on one of them major diameter section.

Furthermore, the outer diameter of the large diameter section provided with the external thread is smaller than the inner diameter of the inner hole.

Still further, the expansion piece includes cone section and round rod section, and the cone section tip links to each other with the round rod section is level and smooth, and the round rod section is equipped with the external screw thread with the internal thread adaptation on the hole, and cone section main aspects external diameter is greater than the hole internal diameter.

The utility model has the advantages that:

the utility model discloses a screw of convenient dismantlement after rust, through set up hole and inflation deformation groove on the screw rod of screw, screw at the nut and connect after the spare part, to the downthehole inflation piece of inserting and screw up the inflation piece, just even this fastener exposes for a long time in the air, still can easily screw out the nut after withdrawing from the inflation piece when dismantling, the inflation piece still can avoid the nut not hard up, convenient to use.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings, in which:

fig. 1 is an exploded view of an embodiment of the present invention.

Fig. 2 is an exploded schematic view of a second embodiment of the present invention.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are for purposes of illustration only and are not intended to limit the scope of the present invention.

Example one

As shown in figure 1, the screw convenient to disassemble after rusted comprises a screw 1, a nut 2 and an expansion part 3, wherein an external thread matched with an internal thread of the nut 2 is arranged on a screw rod of the screw 1, an internal hole far away from an opening at the nut end of the screw is arranged on the screw rod of the screw 1, a plurality of expansion deformation grooves 4 parallel to the axis of the screw 1 are uniformly arranged on the screw rod of the screw 1 along the circumferential direction at intervals, the preferred expansion deformation grooves are 4, the expansion deformation grooves 4 are communicated with the internal hole, one end of each expansion deformation groove extends to the middle part of the corresponding nut 2, the other end of each expansion deformation groove extends to the end surface of the corresponding screw rod, round holes 5 are arranged on the corresponding screw rods at the middle part in the nut 2, the end parts of the expansion deformation grooves 4 extend into the round holes, the screw rods of the screws are prevented from being torn under the action of the expansion part, the internal thread is arranged at the bottom ends of the internal holes and extends into the corresponding nuts 2, the expansion part 3 extends into the internal holes from the opening and expands the screw rods of the screw 1, the expansion piece 3 is provided with an external thread matched with the internal thread of the inner hole.

According to the fastener, the inner hole and the expansion deformation groove are formed in the screw rod of the screw 1, after the nut 2 is screwed and connected with parts, the expansion piece 3 is inserted into the inner hole and the expansion piece 3 is screwed, even if the fastener is exposed in the air for a long time, the nut 2 can be easily screwed out after the expansion piece 3 is withdrawn during dismounting, namely the screw rod of the screw 1 can be contracted in the radial direction after the expansion piece 3 is withdrawn, the expansion piece 3 can prevent the nut 2 from loosening, and the use is convenient.

Expansion part 3 includes the little diameter section between two major diameter sections and two major diameter sections, and the cover is equipped with cyclic annular serpentine spring 31 on the little diameter section, and the external diameter is greater than the internal diameter of hole after serpentine spring 31 expandes, is equipped with the external screw thread with the internal thread adaptation of hole on one of them major diameter section, when expansion part 3 is put into to the hole, compresses tightly serpentine spring 31 with the hand, and it makes its screw rod that extends to prop screw 1 realize the inflation to release serpentine spring 31 after pushing the hole as serpentine spring 31 one end.

Preferably, the outer diameter of the large diameter section provided with the external thread is smaller than the inner diameter of the inner hole, so that the connection is convenient.

Example two

As shown in fig. 2, compared with the first embodiment, the difference is only that the structure of the expansion member is different, specifically:

the expansion part 3 comprises a conical section and a round rod section, the small end of the conical section is smoothly connected with the round rod section, the round rod section is provided with an external thread matched with the internal thread on the inner hole, the outer diameter of the large end of the conical section is larger than the inner diameter of the inner hole, and the conical section can support the screw rod of the screw 1 to realize expansion in the process of pushing the expansion part 3 towards the inner hole.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a screw that convenient dismantlement after rust ization which characterized in that: including screw (1), nut (2) and inflation spare (3), be equipped with the external screw thread with nut (2) internal thread adaptation on the screw rod of screw (1), be equipped with on the screw rod of screw (1) and keep away from screw nut end open-ended hole, be equipped with many expansion deformation groove (4) parallel with screw (1) axis along its even interval of circumference on the screw rod of screw (1), expansion deformation groove (4) and hole intercommunication, and its one end extends to the middle part that corresponds nut (2), and the other end extends to the terminal surface of screw rod, is equipped with round hole (5) on the screw rod that the middle part corresponds in nut (2), and expansion deformation groove (4) tip extends to in the round hole, and the hole bottom is equipped with the internal thread, and the internal thread extends to corresponding nut (2), inflation spare (3) stretch into the hole and make the screw rod inflation of screw (1) from the opening, and the expansion piece (3) is provided with an external thread matched with the internal thread of the inner hole.

2. The screw of claim 1, which is easy to disassemble after rust forming, wherein: inflation piece (3) are including the little diameter section between two major diameter sections and two major diameter sections, the cover is equipped with cyclic annular serpentine spring (31) on the little diameter section, and serpentine spring (31) expand the back external diameter and be greater than the internal diameter of hole, one of them major diameter section on be equipped with the external screw thread of the internal thread adaptation of hole.

3. The screw convenient to disassemble after rusting of claim 2, wherein: the outer diameter of the large diameter section provided with the external thread is smaller than the inner diameter of the inner hole.

4. The screw of claim 1, which is easy to disassemble after rust forming, wherein: the expansion piece (3) comprises a conical section and a round rod section, the small end of the conical section is smoothly connected with the round rod section, the round rod section is provided with an external thread matched with the internal thread on the inner hole, and the outer diameter of the large end of the conical section is larger than the inner diameter of the inner hole.