CN109519463B

CN109519463B - Self-locking bolt

Info

Publication number: CN109519463B
Application number: CN201811350229.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: Suzhou Jianpai Industrial Co ltd
Current assignee: SUZHOU JIANPAI INDUSTRIAL Co.,Ltd.
Priority date: 2018-11-14
Filing date: 2018-11-14
Publication date: 2020-08-28
Anticipated expiration: 2038-11-14
Also published as: CN109519463A

Abstract

The invention belongs to the technical field of bolts, and particularly relates to a self-locking bolt which comprises a cylindrical nut, a screw rod welded at the low end of the nut, a clamping mechanism for realizing self-locking of the bolt, and a movable mechanism matched with the clamping mechanism to realize self-locking, wherein the movable mechanism is arranged in the nut and extends to the inside of the screw rod to be connected with the clamping mechanism; the clamping mechanism is arranged in the screw rod. According to the invention, an external screwdriver is clamped with the cross groove in the rotating block, the screwdriver is rotated, so that the rotating block drives the threaded pipe to rotate, the threaded rod rotates in the threaded hole, the threaded rod pushes the first connecting rod and the second connecting rod to slide along the limiting block in the sliding groove, when one end of the first connecting rod and one end of the second connecting rod are separated from the limiting block, the first connecting rod and the second connecting rod rotate through the first rotating shaft under the action of the tension spring, the first connecting rod and the second connecting rod are clamped with the position of the threaded rod, and the locking device is prevented from loosening to cause self-locking failure.

Description

Self-locking bolt

Technical Field

The invention belongs to the technical field of bolts, and particularly relates to a self-locking bolt.

Background

The bolt is a cylindrical threaded fastening mechanical part matched with a nut, and is a fastener mainly composed of a head part and a screw rod, and the fastener is required to be matched with the nut and used for fastening and connecting two parts with through holes. This form of connection is known as a bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated, so that the bolt connection belongs to detachable connection.

When present self-locking bolt is connected with the nut cooperation, the lock effect is unsatisfactory, and the bulk strength is not enough, and nut and bolt complex structure commonly used also very inconvenient installation, and a lot of locking means do not have real self-locking function moreover to probably cause self-locking bolt and nut not hard up, thereby cause the auto-lock failure. In view of this, the present invention provides a self-locking bolt having the following features:

(1) the invention provides a self-locking bolt which is clamped with a cross groove in a rotating block through an external screwdriver, the screwdriver is rotated to enable the rotating block to drive a threaded pipe to rotate so as to enable a threaded rod to rotate in a threaded hole, the threaded rod is enabled to push a first connecting rod and a second connecting rod to slide along a limiting block in a sliding groove, when one end of the first connecting rod and one end of the second connecting rod are separated from the limiting block, the first connecting rod and the second connecting rod rotate through a first rotating shaft under the action of a tension spring, the first connecting rod and the second connecting rod are enabled to clamp the position of the threaded rod, and the locking device is prevented from loosening to cause self-locking failure.

(2) The invention provides a self-locking bolt, which is characterized in that one end of a threaded rod pushes a sliding block to move downwards in a sliding groove, a push rod at the bottom end of the sliding block pushes two arc-shaped blocks to move towards one ends of two limiting grooves, the arc-shaped blocks drive a movable block to slide in the limiting grooves, so that a clamping block at one end of the movable block is clamped in a wall, the threaded rod is fixed, and then a sealing plug is plugged into a groove.

Disclosure of Invention

In order to overcome the defects of the prior art, the self-locking bolt provided by the invention is characterized in that an external screwdriver is clamped with a cross groove in a rotating block, the rotating block drives a threaded pipe to rotate by rotating the screwdriver, so that a threaded rod rotates in a threaded hole, the threaded rod pushes a first connecting rod and a second connecting rod to slide along a limiting block in a sliding groove, when one end of the first connecting rod and one end of the second connecting rod are separated from the limiting block, the first connecting rod and the second connecting rod rotate through a first rotating shaft under the action of a tension spring, the first connecting rod and the second connecting rod clamp the position of the threaded rod, the locking device is prevented from loosening and causing self-locking failure, one end of the threaded rod pushes a sliding block to move downwards in the sliding groove, a push rod at the bottom end of the sliding block pushes two arc-shaped blocks to move towards one ends of two limiting grooves, the arc-shaped blocks drive the movable blocks to, thereby fix the screw rod, then fill in the recess with the sealing plug, simple to operate is swift, and locks and die effectually.

The invention achieves the aim through the following technical scheme, and the self-locking bolt comprises a cylindrical nut, a screw rod welded at the lower end of the nut, a clamping mechanism for realizing self-locking of the bolt, and a movable mechanism matched with the clamping mechanism to realize self-locking, wherein the movable mechanism is arranged in the nut and extends to the inside of the screw rod to be connected with the clamping mechanism; the clamping mechanism is arranged in the screw rod; the movable mechanism comprises a sealing plug, a groove, a threaded rod, a rotating block, a threaded pipe, a threaded rod, a first rotating shaft, a threaded hole, a sliding groove, a limiting block, a tension spring, a first connecting rod and a second connecting rod, wherein the top of the nut is provided with the groove, the groove is internally plugged with a rubber sealing plug which is in matched connection with the groove, and the sealing plug is made of an elastic material; the inner part of the nut is fixedly connected with a rotating block provided with a cross groove, the bottom end of the rotating block is fixedly connected with a threaded pipe, and the inner side wall of the threaded pipe is provided with internal threads; the inner part of the threaded pipe is connected with a threaded rod in a threaded manner, the bottom end of the threaded rod is rotatably connected with a first connecting rod and a second connecting rod through a first rotating shaft, and the rotating block drives the threaded pipe to rotate so that the threaded rod rotates in the threaded hole, so that the threaded rod pushes the first connecting rod and the second connecting rod to slide along a limiting block in the sliding groove; one end of the first connecting rod is elastically connected with one end of the second connecting rod through a tension spring, the bottom end of the nut is fixedly connected with a screw rod, a threaded hole and a sliding groove are formed in the screw rod, and a limiting block is fixedly connected in the sliding groove; wherein the clamping mechanism comprises a spring, a through hole, a movable block, a slide block, a push rod, a clamping block, a second rotating shaft, an arc-shaped block, a rod tip and a limiting groove, the sliding chute is internally connected with a sliding block in a sliding way, the bottom end of the sliding block is fixedly connected with a push rod, the bottom end of the push rod is elastically connected with the bottom of the sliding chute through a spring, one end of the push rod is rotatably connected with the two arc-shaped blocks through a second rotating shaft, one end of each arc-shaped block is fixedly connected with the movable block, one end of the movable block is fixedly connected with a clamping block, the bottom end of the screw rod is fixedly connected with a rod tip, a through hole is formed in the rod tip, open between pole point and the screw rod has the spacing groove, and the one end of threaded rod promotes the slider and moves down in the spout, makes the push rod of slider bottom promote two arc pieces and remove to the one end of two spacing grooves, and the arc piece drives the movable block and slides in the spacing groove to the fixture block that makes movable block one end is in the wall.

Further, be used for realizing the conical of nut seal the lateral wall edge of sealing plug is equipped with hemispherical arch, and hemispherical arch is connected with the nut cooperation, and be equipped with spacing hole on protruding and the nut junction lateral wall, when using, be connected the sealed of realizing the nut through hemispherical arch and nut cooperation, make the nut prevent the entering of water in the air in the use, the life of extension bolt, can prevent simultaneously that the bolt head from rustting, make things convenient for the bolt to dismantle, and simultaneously, be equipped with spacing hole in the inboard of nut, can make the hydroenergy that gets into the bolt enough be held back in the inside in spacing hole, and then the life of extension bolt.

Further, movable block sliding connection is at the spacing inslot, just the movable block symmetry sets up in the spacing inslot portion, and when using, the movable block that sets up through the symmetry can make bolt auto-lock performance better, simultaneously, can make the bolt fixed effect when the auto-lock better.

Furthermore, the rod point is communicated with the sliding groove through the through hole, the rod point is of a conical structure, so that the bolt can better enter the wall body when in use, and meanwhile, the bolt plays a role in guiding in the use process.

Furthermore, the first connecting rod and the second connecting rod are both positioned at the same side of the threaded rod, the two arc-shaped blocks are both positioned at the same side of the push rod, and the arc-shaped blocks are movably connected in the through holes and the limiting grooves; first connecting rod and second are connected and are slided with reciprocal conflict from top to bottom between the stopper, and the bottom inboard of stopper is convex structure, plays good guide effect when making first connecting rod and second connecting rod resume under the answer effect of spring, simultaneously, reduces the frictional force between first connecting rod, second connecting rod and the stopper.

Furthermore, threaded rod threaded connection is in the threaded hole, just the diameter of screw hole is greater than the diameter of threaded rod, realizes that the threaded rod moves along the screw hole.

The invention has the beneficial effects that:

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the present invention in an unlocked state;

FIG. 3 is a schematic view of the self-locking state of the present invention;

fig. 4 is an enlarged schematic view of a portion shown in fig. 2.

In the figure: 1. the screw cap, 1a, spacing hole, 2, sealing plug, 2a, arch, 3, recess, 4, threaded rod, 5, rotatory piece, 6, screwed pipe, 7, screw rod, 8, first pivot, 9, spring, 10, through-hole, 11, movable block, 12, screw hole, 13, spout, 14, stopper, 15, extension spring, 16, first connecting rod, 17, second connecting rod, 18, slider, 19, push rod, 20, fixture block, 21, second pivot, 22, arc piece, 23, pole point, 24, spacing groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a self-locking bolt includes a cylindrical nut 1, a screw rod 7 welded at a lower end of the nut 1, a locking mechanism for realizing self-locking of the bolt, and a moving mechanism for realizing self-locking by cooperating with the locking mechanism, wherein the moving mechanism is installed inside the nut 1 and extends to the inside of the screw rod 7 to be connected with the locking mechanism; the clamping mechanism is arranged in the screw 7; the movable mechanism comprises a sealing plug 2, a groove 3, a threaded rod 4, a rotating block 5, a threaded pipe 6, a threaded rod 7, a first rotating shaft 8, a threaded hole 12, a sliding chute 13, a limiting block 14, a tension spring 15, a first connecting rod 16 and a second connecting rod 17, the groove 3 is formed in the top of the nut 1, the groove 3 is internally plugged with a rubber sealing plug 2 which is connected with the groove in a matched mode, and the sealing plug 2 is made of elastic materials; the screw cap 1 is internally and fixedly connected with a rotating block 5 provided with a cross groove, the bottom end of the rotating block 5 is fixedly connected with a threaded pipe 6, and the inner side wall of the threaded pipe 6 is provided with internal threads; the threaded pipe 6 is connected with the threaded rod 4 in a threaded manner, the bottom end of the threaded rod 4 is rotatably connected with the first connecting rod 16 and the second connecting rod 17 through the first rotating shaft 8, the rotating block 5 drives the threaded pipe 6 to rotate, so that the threaded rod 4 rotates in the threaded hole 12, and the threaded rod 4 pushes the first connecting rod 16 and the second connecting rod 17 to slide along the limiting block 14 in the sliding groove 13; one end of the first connecting rod 16 is elastically connected with one end of the second connecting rod 17 through a tension spring 15, the bottom end of the nut 1 is fixedly connected with a screw 7, a threaded hole 12 and a sliding groove 13 are formed in the screw 7, and a limiting block 14 is fixedly connected in the sliding groove 13; wherein, the clamping mechanism comprises a spring 9, a through hole 10, a movable block 11, a sliding block 18, a push rod 19, a fixture block 20, a second rotating shaft 21, an arc-shaped block 22, a rod tip 23 and a limiting groove 24, the sliding block 18 is slidably connected in the sliding groove 13, the bottom end of the sliding block 18 is fixedly connected with the push rod 19, the bottom end of the push rod 19 is elastically connected with the bottom of the sliding groove 13 through the spring 9, one end of the push rod 19 is rotatably connected with the two arc-shaped blocks 22 through the second rotating shaft 21, one end of the arc-shaped block 22 is fixedly connected with the movable block 11, one end of the movable block 11 is fixedly connected with the fixture block 20, the bottom end of the screw 7 is fixedly connected with the rod tip 23, the through hole 10 is formed in the rod tip 23, the limiting groove 24 is formed between the rod tip 23 and the screw 7, one end of the threaded rod 4 pushes the sliding block 18 to move downwards in the sliding groove 13, the arc-shaped block 22 drives the movable block 11 to slide in the limiting groove 24, so that the fixture block 20 at one end of the movable block 11 is clamped in the wall.

It is specific, be used for realizing the conical of nut seal the lateral wall edge of sealing plug 2 is equipped with hemispherical arch 2a, and hemispherical arch 2a is connected with the cooperation of nut 1, and be equipped with spacing hole 1a on protruding 2a and the 1 junction lateral wall of nut, when using, be connected the sealed of realization nut 1 through hemispherical arch 2a and the cooperation of nut 1, make nut 1 prevent the entering of water in the air in the use, the life of extension bolt, can prevent simultaneously that the bolt head from rustting, make things convenient for the bolt to dismantle, and simultaneously, be equipped with spacing hole 1a in the inboard of nut 1, can make the hydroenergy that gets into the bolt enough be held back in the inside of spacing hole 1a, and then the life of extension bolt.

Specifically, 11 sliding connection of movable block is in spacing groove 24, just 11 symmetries of movable block set up inside spacing groove 24, and movable block 11 through the symmetry setting can make bolt auto-lock performance better, and simultaneously, can make the bolt fixed effect when the auto-lock better.

Specifically, the rod tip 23 is communicated with the sliding groove 13 through the through hole 10, the rod tip 23 is of a conical structure, so that the bolt can better enter the wall when in use, and meanwhile, the bolt plays a role in guiding in the use process.

Specifically, the first connecting rod 16 and the second connecting rod 17 are both positioned on the same side of the threaded rod 4, the two arc-shaped blocks 22 are both positioned on the same side of the push rod 19, and the arc-shaped blocks 22 are movably connected in the through hole 10 and the limiting groove 24; first connecting rod 16 and second are connected 17 and are slided with stopper 14 between reciprocal conflict from top to bottom, and the bottom inboard of stopper 14 is circular arc structure, makes first connecting rod 16 and second connecting rod 17 play good guide effect when resumeing under the effect of spring, simultaneously, reduces the frictional force between first connecting rod 16, second connecting rod 17 and the stopper 14.

Specifically, the threaded rod 4 is in threaded connection with the threaded hole 12, and the diameter of the threaded hole 12 is larger than that of the threaded rod 4, so that the threaded rod 4 moves along the threaded hole 12.

When the device is used, firstly, the sealing plug 2 in the device is taken out of the groove 3, then the device is placed in a wall body, an external screwdriver is clamped with the cross groove in the rotating block 5, the screwdriver is rotated, so that the rotating block 5 drives the threaded pipe 6 to rotate, so that the threaded rod 4 rotates in the threaded hole 12, the threaded rod 4 drives the first connecting rod 16 and the second connecting rod 17 to slide in the sliding groove 13 along the limiting block 14, when one end of the first connecting rod 16 and one end of the second connecting rod 17 are separated from the limiting block 14, the first connecting rod 16 and the second connecting rod 17 rotate through the first rotating shaft 8 under the action of the tension spring 15, so that the first connecting rod 16 and the second connecting rod 17 clamp the position of the threaded rod 4, one end of the threaded rod 4 pushes the sliding block 18 to move downwards in the sliding groove 13, so that the push rod 19 at the bottom end of the sliding block 18 pushes the two arc-shaped blocks 22 to, the arc-shaped block 22 drives the movable block 11 to slide in the limiting groove 24, so that the clamping block 20 at one end of the movable block 11 is clamped in the wall, the screw 7 is fixed, the sealing plug 2 is then plugged into the groove 3, and the installation is convenient and rapid.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A self-locking bolt is characterized in that: the self-locking nut comprises a cylindrical nut (1), a screw rod (7) welded at the lower end of the nut (1), a clamping mechanism for realizing self-locking of a bolt, and a movable mechanism matched with the clamping mechanism to realize self-locking, wherein the movable mechanism is arranged in the nut (1) and extends to the inside of the screw rod (7) to be connected with the clamping mechanism; the clamping mechanism is arranged in the screw (7); the movable mechanism comprises a sealing plug (2), a groove (3), a threaded rod (4), a rotating block (5), a threaded pipe (6), a screw rod (7), a first rotating shaft (8), a threaded hole (12), a sliding groove (13), a limiting block (14), a tension spring (15), a first connecting rod (16) and a second connecting rod (17), the groove (3) is formed in the top of the nut (1), a rubber sealing plug (2) which is connected with the groove (3) in a matched mode is plugged in the groove (3), and the sealing plug (2) is made of elastic materials; the inner part of the nut (1) is fixedly connected with a rotating block (5) provided with a cross groove, the bottom end of the rotating block (5) is fixedly connected with a threaded pipe (6), and the inner side wall of the threaded pipe (6) is provided with internal threads; the threaded rod (4) is connected with the inner thread of the threaded pipe (6), the bottom end of the threaded rod (4) is rotatably connected with the first connecting rod (16) and the second connecting rod (17) through the first rotating shaft (8), the rotating block (5) drives the threaded pipe (6) to rotate, so that the threaded rod (4) rotates in the threaded hole (12), and the threaded rod (4) pushes the first connecting rod (16) and the second connecting rod (17) to slide along the limiting block (14) in the sliding groove (13); one end of the first connecting rod (16) is elastically connected with one end of the second connecting rod (17) through a tension spring (15), the bottom end of the nut (1) is fixedly connected with a screw rod (7), a threaded hole (12) and a sliding groove (13) are formed in the screw rod (7), and a limiting block (14) is fixedly connected in the sliding groove (13); wherein, the clamping mechanism comprises a spring (9), a through hole (10), a movable block (11), a sliding block (18), a push rod (19), a clamping block (20), a second rotating shaft (21), arc blocks (22), a rod tip (23) and a limiting groove (24), the sliding block (18) is connected in the sliding groove (13), the bottom end of the sliding block (18) is fixedly connected with the push rod (19), the bottom end of the push rod (19) is elastically connected with the bottom of the sliding groove (13) through the spring (9), one end of the push rod (19) is rotatably connected with the two arc blocks (22) through the second rotating shaft (21), one end of each arc block (22) is fixedly connected with the movable block (11), one end of each movable block (11) is fixedly connected with the clamping block (20), the bottom end of the screw rod (7) is fixedly connected with the rod tip (23), the through hole (10) is formed in the rod tip, a limiting groove (24) is formed between the rod tip (23) and the screw rod (7), one end of the threaded rod (4) pushes the sliding block (18) to move downwards in the sliding groove (13), a push rod (19) at the bottom end of the sliding block (18) pushes the two arc-shaped blocks (22) to move towards one ends of the two limiting grooves (24), and the arc-shaped blocks (22) drive the movable block (11) to slide in the limiting groove (24), so that the fixture block (20) at one end of the movable block (11) is clamped in the wall;

the edge of the outer side wall of the conical sealing plug (2) for realizing the sealing of the screw cap is provided with a hemispherical bulge (2a), the hemispherical bulge (2a) is matched and connected with the screw cap (1), and the side wall of the joint of the bulge (2a) and the screw cap (1) is provided with a limiting hole (1 a); the movable blocks (11) are connected in the limiting grooves (24) in a sliding mode, and the movable blocks (11) are symmetrically arranged in the limiting grooves (24); the rod tip (23) is communicated with the sliding groove (13) through the through hole (10), and the rod tip (23) is of a conical structure; the first connecting rod (16) and the second connecting rod (17) are both positioned at the same side of the threaded rod (4), the two arc-shaped blocks (22) are both positioned at the same side of the push rod (19), and the arc-shaped blocks (22) are movably connected in the through hole (10) and the limiting groove (24); the first connecting rod (16), the second connecting rod (17) and the limiting block (14) are in up-and-down reciprocating abutting sliding, and the inner side of the bottom of the limiting block (14) is of an arc-shaped structure; the threaded rod (4) is in threaded connection with the threaded hole (12), and the diameter of the threaded hole (12) is larger than that of the threaded rod (4);

when the device is used, the sealing plug (2) in the device is taken out of the groove (3), then the device is placed in a wall body, an external screwdriver is clamped with a cross groove in the rotating block (5), the screwdriver is rotated to enable the rotating block (5) to drive the threaded pipe (6) to rotate so as to enable the threaded rod (4) to rotate in the threaded hole (12), so that the threaded rod (4) pushes the first connecting rod (16) and the second connecting rod (17) to slide along the limiting block (14) in the sliding groove (13), when one ends of the first connecting rod (16) and the second connecting rod (17) are separated from the limiting block (14), the first connecting rod (16) and the second connecting rod (17) rotate through the first rotating shaft (8) under the action of the tension spring (15), so that the first connecting rod (16) and the second connecting rod (17) drive the position of the threaded rod (4), one end of the clamping threaded rod (4) pushes the sliding block (18) to move downwards in the sliding groove (13), push rod (19) that make slider (18) bottom promote two arc pieces (22) and remove to the one end of two spacing grooves (24), and arc piece (22) drive movable block (11) slide in spacing groove (24) to fixture block (20) the block that makes movable block (11) one end is in the wall, thereby fixes screw rod (7), then fills in recess (3) with sealing plug (2), simple to operate is swift.