CN211009534U

CN211009534U - Bolt with electroplated outer layer

Info

Publication number: CN211009534U
Application number: CN201922011752.9U
Authority: CN
Inventors: 曾飚; 曾煚
Original assignee: Xiangtan Fangzhou Machinery Co ltd
Current assignee: Xiangtan Fangzhou Machinery Co ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-07-14
Anticipated expiration: 2029-11-20

Abstract

The utility model relates to a fastening member technical field just discloses a bolt of outer electroplating, including spiral shell head, screw rod and fastening nut, the bottom of spiral shell head and the top fixed connection of screw rod, the surface of screw rod and the inside screw hole threaded connection of fastening nut. This outer bolt of electroplating, through setting up first spring, the second spring, first isolation sleeve, second isolation sleeve etc, the bottom inner wall that the bottom of screw rod withstood second isolation sleeve is ejecting with second isolation sleeve from first isolation sleeve's surface, first isolation sleeve is pulled out from fastening nut's inside, the dustcoat has screwed part at the screw rod, when taking off fastening bolt, the inside of the fastening nut is returned to first isolation sleeve retractile under the effect of elastic force, second isolation sleeve can be pushed back to the normal position, traditional bolt has been solved and has been handled for anticorrosive adoption to bolt surface painting, can be with the lacquer painting wearing and tearing when being connected because the screw thread, influence the problem of the anticorrosive function of screw thread department.

Description

Bolt with electroplated outer layer

Technical Field

The utility model relates to a fastening member technical field specifically is a bolt of outer electroplating.

Background

The bolt is a fastener consisting of a head part and a screw rod, and needs to be matched with a nut for fastening and connecting two parts with through holes, the connection form is called bolt connection, the traditional bolt is exposed outside for a long time and is easy to corrode, the corroded bolt no longer has a fastening function, a series of bad results can be caused, the surface of the bolt is painted for corrosion resistance, and the thread part is abraded by using paint when being connected, so the thread part does not have an anti-corrosion function.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a bolt of outer electroplating possesses advantages such as anticorrosive, has solved traditional bolt and has handled bolt surface painting for anticorrosive adoption, because the screw thread can be with the lacquer painting wearing and tearing when being in the connection, influences the problem of screw thread department anti-corrosion function.

(II) technical scheme

In order to achieve the above-mentioned anti-corrosion purpose, the utility model provides the following technical scheme: a bolt with an electroplated outer layer comprises a screw head, a screw rod and a fastening nut, wherein the bottom end of the screw head is fixedly connected with the top end of the screw rod, the surface of the screw rod is in threaded connection with a threaded hole in the fastening nut, an O-shaped groove extending to the inside is formed in the bottom of the fastening nut, a first sliding groove is formed in the outer side wall of the O-shaped groove, a second sliding groove is formed in the outer side wall of the O-shaped groove, a first spring is fixedly connected to the top wall of the first sliding groove, one end, away from the top wall of the first sliding groove, of the first spring is fixedly connected with a first sliding block, a first isolating sleeve is fixedly connected to the left end of the first sliding block, a through hole in the first isolating sleeve is movably connected with the O-shaped groove formed in the bottom of the fastening nut, a second sliding block is fixedly connected to the left side of the first isolating sleeve, a second spring is fixedly connected to the top end of the second sliding block, the surface of the first isolation sleeve is movably connected with a second isolation sleeve, and a groove in the inner wall of the O-shaped groove in the second isolation sleeve is movably connected with a lug on the surface of the first isolation sleeve.

Preferably, the inner wall of the second isolation sleeve is provided with an O-shaped groove, and the inner wall of the O-shaped groove is provided with two grooves.

Preferably, the surface of the first isolation sleeve is provided with two bumps, and the sizes of the two bumps are matched with the size of the groove in the inner wall of the O-shaped groove of the second isolation sleeve.

Preferably, the second spring is the same size as the first spring.

Preferably, a through hole is formed in the second isolation sleeve, and the size of the through hole is matched with that of the screw rod.

Preferably, the surfaces of the screw head, the screw rod and the fastening nut are subjected to electroplating treatment.

Compared with the prior art, the utility model provides a bolt of outer electroplating possesses following beneficial effect:

1. the bolt with the electroplated outer layer is characterized in that the first spring, the second spring, the first sliding groove, the second sliding groove, the first sliding block, the second sliding block, the first isolation sleeve, the second isolation sleeve and the like are arranged, so that after the screw rod enters a to-be-connected piece and a fastening nut is installed, the bottom of the screw rod props against the inner wall of the bottom of the second isolation sleeve to eject the second isolation sleeve out of the surface of the first isolation sleeve, the first spring and the second spring are stretched, the first isolation sleeve is pulled out of the fastening nut, the first isolation sleeve and the second isolation sleeve are covered on the part with threads on the screw rod, when the fastening bolt is taken down, the first isolation sleeve can retract back into the fastening nut under the action of elastic force, the second isolation sleeve can be pushed back to the original position, the problem that the traditional bolt adopts painting treatment on the surface of the bolt for resisting corrosion is solved, and the painted surface is abraded when the threads are connected, the corrosion prevention function of the thread is affected.

2. This outer electroplated bolt sets up the lug through the surface at first isolation sleeve, offers the recess at the inner wall in the inside O type groove of second isolation sleeve for second isolation sleeve can remove and can not follow first isolation sleeve's surface landing on the surface at first isolation sleeve.

Drawings

FIG. 1 is a sectional view of the front view structure of the present invention;

FIG. 2 is a three-dimensional view of the screw structure of the present invention;

FIG. 3 is a three-dimensional view of the first distance sleeve structure of the present invention;

fig. 4 is a three-dimensional view of the second distance sleeve structure of the present invention.

Wherein: 1. a screw head; 2. a screw; 3. fastening a nut; 4. a first distance sleeve; 5. a first slider; 6. a second slider; 7. a second chute; 8. a first chute; 9. a second distance sleeve; 10. a first spring; 11. a second spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a bolt with an outer layer electroplated, which comprises a screw head 1, a screw rod 2 and a fastening nut 3, wherein the surfaces of the screw head 1, the screw rod 2 and the fastening nut 3 are electroplated, so that the screw head 1, the screw rod 2 and the fastening nut 3 have an anti-corrosion function, the bottom end of the screw head 1 is fixedly connected with the top end of the screw rod 2, the surface of the screw rod 2 is in threaded connection with a threaded hole inside the fastening nut 3, the bottom of the fastening nut 3 is provided with an O-shaped groove extending to the inside, the lateral outer wall of the O-shaped groove is provided with a first chute 8, the lateral outer wall of the O-shaped groove is provided with a second chute 7, the top wall of the first chute 8 is fixedly connected with a first spring 10, one end of the first spring 10, which is far away from the top wall of the first chute 8, is fixedly connected with a first slider 5, the left end of the first slider 5, a through hole in the first isolation sleeve 4 is movably connected with an O-shaped groove arranged at the bottom of the fastening nut 3, the left side of the first isolation sleeve 4 is fixedly connected with a second slider 6, the top end of the second slider 6 is fixedly connected with a second spring 11, the specification of the second spring 11 is the same as that of a first spring 10, one end of the second spring 11, far away from the second slider 6, is fixedly connected with the top wall of a second chute 7, the surface of the first isolation sleeve 4 is movably connected with a second isolation sleeve 9, the inner wall of the second isolation sleeve 9 is provided with an O-shaped groove, the inner wall of the O-shaped groove is provided with two grooves, the sizes of two lugs on the surface of the first isolation sleeve 4 are matched with the size of a groove on the inner wall of the O-shaped groove in the second isolation sleeve 9, the groove on the inner wall of the O-shaped groove in the second isolation sleeve 9 is movably connected with the lug on the, the size of the through hole matches the size of the screw 2.

When the fastening nut 3 is taken off, the first isolation sleeve 4 can retract back into the fastening nut 3 under the action of the elastic force of the first spring 10 and the second spring 11, and the second isolation sleeve 9 can be pushed back to the original position.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a bolt of skin electroplating, includes spiral shell head (1), screw rod (2) and fastening nut (3), its characterized in that: the bottom end of the screw head (1) is fixedly connected with the top end of the screw rod (2), the surface of the screw rod (2) is in threaded connection with a threaded hole in the fastening nut (3), an O-shaped groove extending to the inside is formed in the bottom of the fastening nut (3), a first sliding groove (8) is formed in the outer wall of the O-shaped groove, a second sliding groove (7) is formed in the outer wall of the O-shaped groove, a first spring (10) is fixedly connected to the top wall of the first sliding groove (8), a first sliding block (5) is fixedly connected to one end, far away from the top wall of the first sliding groove (8), of the first spring (10), a first isolation sleeve (4) is fixedly connected to the left end of the first sliding block (5), a through hole in the first isolation sleeve (4) is movably connected with the O-shaped groove formed in the bottom of the fastening nut (3), a second sliding block (6) is fixedly connected to the left side of the, the top fixedly connected with second spring (11) of second slider (6), the roof fixed connection of the one end of second slider (6) and second spout (7) is kept away from in second spring (11), the surperficial swing joint of first isolation sleeve (4) has second isolation sleeve (9), recess and the lug swing joint on first isolation sleeve (4) surface on the inside O type inslot wall of second isolation sleeve (9).

2. An exterior plated bolt according to claim 1, wherein: an O-shaped groove is formed in the inner wall of the second isolation sleeve (9), and two grooves are formed in the inner wall of the O-shaped groove.

3. An exterior plated bolt according to claim 1, wherein: the surface of the first isolation sleeve (4) is provided with two convex blocks, and the sizes of the two convex blocks are matched with the size of the groove on the inner wall of the O-shaped groove of the second isolation sleeve (9).

4. An exterior plated bolt according to claim 1, wherein: the second spring (11) has the same specification as the first spring (10).

5. An exterior plated bolt according to claim 1, wherein: and a through hole is formed in the second isolation sleeve (9), and the size of the through hole is matched with that of the screw rod (2).

6. An exterior plated bolt according to claim 1, wherein: and the surfaces of the screw head (1), the screw rod (2) and the fastening nut (3) are subjected to electroplating treatment.