CN110454480B

CN110454480B - Anti-theft bolt

Info

Publication number: CN110454480B
Application number: CN201910736855.3A
Authority: CN
Inventors: 张瑾
Original assignee: ZHEJIANG YUTAI AUTO PARTS CO Ltd
Current assignee: ZHEJIANG YUTAI AUTO PARTS Co.,Ltd.
Priority date: 2019-08-10
Filing date: 2019-08-10
Publication date: 2020-12-25
Anticipated expiration: 2039-08-10
Also published as: CN110454480A

Abstract

The invention relates to the field of bolts, in particular to an anti-theft bolt, which comprises a protection mechanism, a compression leg, a first internal thread, a limiting groove, a second internal thread, a protection cover, a first bolt block, a first clamping groove, a second bolt block, a first clamping block, a third bolt block, a second clamping block, a fourth bolt block, a second clamping groove, a compression bar, a sliding block, a sliding groove, a through hole, a limiting mechanism, a stop block, a stop lever, a reset spring, a limiting ball, a limiting hole, a first thread end, a head end and a screw rod end, wherein the wedge-shaped sliding block enables the stop lever to be pushed outwards along the limiting hole, the stop lever is pushed outwards in a splayed shape, the stop lever drives the limiting ball to be clamped into the limiting groove to realize the fastening of the protection cover and the bolt, meanwhile, the internal length of the protection cover is equal to the vertical length of the sum of the first thread end and the nut end, the protection of the nut end is realized, the bolt is prevented from, the iron tower or the metal component can be maintained and adjusted conveniently, and the bolt can be recycled conveniently.

Description

Anti-theft bolt

Technical Field

The invention relates to the field of bolts, in particular to an anti-theft bolt.

Background

A bolt is a cylindrical threaded fastener fitted with a nut. The fastener consists of a head part and a screw rod and is used for fastening and connecting two parts with through holes. The variety of bolts is wide, and among them, the antitheft bolt is widely used in many outdoor products.

The fastener that iron tower or metal framework etc. of putting up in the field used all is ordinary bolt, in time adopt the theftproof bolt, when using the theftproof bolt on iron tower or metal framework, just need constantly maintain, adjustment and fastening because of wind-force and vibration, nevertheless often because can cause the theftproof bolt rust in humid environment and weather, it maintains the adjustment to iron tower or metal framework to be difficult to dismantle, and the theftproof bolt that adopts easily becomes flexible at present influences the use of iron tower or metal framework, cause important facilities such as iron tower stolen very easily.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides the anti-theft bolt which is convenient for maintaining and adjusting an iron tower or a metal component, preventing the bolt from being blocked and facilitating the recycling of the bolt.

The technical scheme adopted by the invention for solving the technical problems is as follows: an anti-theft bolt comprises a protection mechanism, a first bolt block, a second bolt block, a third bolt block, a fourth bolt block, a pressure rod and a limiting mechanism, wherein the first bolt block and the fourth bolt block have the same structure, the second bolt block and the third bolt block have the same structure, the first bolt block, the second bolt block, the third bolt block, the fourth bolt block and the pressure rod are combined to form a bolt whole, sliding grooves are formed in the inner sides of the first bolt block and the fourth bolt block, the limiting mechanism is installed in the sliding grooves, through holes are formed in the middle portions of the inner sides of the first bolt block, the second bolt block, the third bolt block and the fourth bolt block, and the pressure rod is installed in the through holes; the first bolt block, the second bolt block, the third bolt block, the fourth bolt block and the pressure rod form a whole body and are in threaded connection with the protection mechanism.

Specifically, protection machanism includes compression leg, first internal thread, spacing groove, second internal thread and protective cover, the inside top center department of protective cover is equipped with the columniform compression leg, just be equipped with the spacing groove that second internal thread, first internal thread and ring shape set up from inside to outside in proper order on the inside wall of protective cover.

Specifically, the depression bar includes the slider, just the slider is the symmetry setting, the slider is the wedge structure, just the slider with spout sliding connection.

Specifically, the diameter of the cylinder of the pressure lever is equal to the diameter of the through hole, and the width of the sliding block is equal to the diameter of the sliding groove; the length of the pressing rod is smaller than that of the sliding groove.

The limiting mechanism comprises a stop block, a stop rod, a return spring and a limiting ball, limiting holes are formed in sliding grooves of the first bolt block and the fourth bolt block, the limiting mechanism is slidably mounted in the limiting holes, the stop block is arranged on the side wall of the stop rod, and the limiting ball is arranged at the end part of the stop rod; the outer side wall of the stop lever is sleeved with a return spring, one end of the stop lever is hemispherical, and the stop lever at one hemispherical end abuts against the sliding block.

Specifically, the diameter of the limiting ball is equal to the diameter of the limiting groove.

Specifically, first clamping grooves are symmetrically formed in the inner side wall of the first bolt block, second clamping grooves are symmetrically formed in the inner side wall of the fourth bolt block, and the first clamping grooves and the second clamping grooves are identical in structure; first clamping blocks are symmetrically arranged on two sides of the second bolt block, second clamping blocks are symmetrically arranged on two sides of the third bolt block, the first clamping blocks and the second clamping blocks are identical in structure, and the two first clamping blocks are clamped with the first clamping groove and the second clamping groove respectively; the two second clamping blocks are respectively clamped with the first clamping groove and the second clamping groove, and the first clamping block and the second clamping block are elastic pieces.

Specifically, the first bolt block, the second bolt block, the third bolt block and the fourth bolt block are sequentially provided with a first threaded end, a head end, a screw rod end and a second threaded end from top to bottom, the maximum diameter of the head end is smaller than that of the first threaded end, and the maximum diameter of the head end is larger than that of the second threaded end.

The invention has the beneficial effects that:

(1) according to the anti-theft bolt, the first bolt block, the second bolt block, the third bolt block and the fourth bolt block are connected more tightly through the matching of the clamping block and the clamping groove, so that the phenomenon of thread sliding between the outer bolts when the bolt is used is prevented, and the phenomenon of bolt locking is prevented.

(2) According to the anti-theft bolt, the wedge-shaped sliding block enables the stop lever to be pushed outwards along the limiting hole, the stop lever is pushed outwards in a splayed shape, the limiting groove is located on the outer side of the limiting hole, the stop lever drives the limiting ball to extend outwards into the limiting groove along with rotation of the protective cover, the tail end of the pressing rod is abutted to the end portion of the pressing column, the limiting hole is arranged in an inclined mode, the outlet of the limiting hole is located on the nut end, the protective cover is continuously rotated, the outer side of the sliding block is completely abutted to the stop lever, the stop lever is pushed to drive the limiting ball to be clamped into the limiting groove, fastening of the protective cover and the bolt is achieved, meanwhile, the inner length of the protective cover is equal to the vertical length of the sum of the first thread end and the nut end, protection of the nut end is achieved, meanwhile protection of the.

(3) According to the anti-theft bolt, if the phenomenon of rusting and locking occurs for a long time in outdoor use, the pressure rod is pulled out, the second bolt block and the third bolt block move towards the center, the first clamping block and the second clamping block are elastic pieces, the second bolt block and the third bolt block are separated from the first bolt block and the fourth bolt block when the second clamping block and the third bolt block move towards the center, the second bolt block and the third bolt block are detached, and finally the first bolt block and the fourth bolt block are detached, so that damage to threads in a bolt hole in the detaching process is prevented, and meanwhile, the bolt can be reused only by replacing the protective cover.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic overall structure diagram of a preferred embodiment of an anti-theft bolt according to the present invention;

FIG. 2 is a schematic view of the overall structure shown in FIG. 1;

FIG. 3 is a schematic view of the guard mechanism shown in FIG. 1;

FIG. 4 is a cross-sectional view of the fourth bolt block shown in FIG. 1;

FIG. 5 is an enlarged view of portion A of FIG. 4;

fig. 6 is a right side view of the fourth bolt block shown in fig. 1.

In the figure: 1. the protection mechanism comprises a protection mechanism body 11, a compression leg 12, a first internal thread 13, a limiting groove 14, a second internal thread 15, a protection cover 2, a first bolt block 21, a first clamping groove 3, a second bolt block 31, a first clamping block 4, a third bolt block 41, a second clamping block 5, a fourth bolt block 51, a second clamping groove 6, a compression bar 61, a sliding block 7, a sliding groove 8, a through hole 9, a limiting mechanism 91, a stop block 92, a stop lever 93, a reset spring 94, a limiting ball 9a, a limiting hole a, a first thread end b, a head end c, a screw rod end d and a second thread end.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-6, the anti-theft bolt according to the present invention includes a protection mechanism 1, a first bolt block 2, a second bolt block 3, a third bolt block 4, a fourth bolt block 5, a press rod 6 and a limiting mechanism 9, wherein the first bolt block 2 and the fourth bolt block 5 have the same structure, the second bolt block 3 and the third bolt block 4 have the same structure, the first bolt block 2, the second bolt block 3, the third bolt block 4, the fourth bolt block 5 and the press rod 6 are combined to form a bolt whole, a sliding groove 7 is arranged on the inner side of each of the first bolt block 2 and the fourth bolt block 5, the limiting mechanism 9 is mounted inside the sliding groove 7, a through hole 8 is formed in the middle of the inner side of each of the first bolt block 2, the second bolt block 3, the third bolt block 4 and the fourth bolt block 5, and the press rod 6 is mounted inside the through hole 8; the first bolt block 2, the second bolt block 3, the third bolt block 4, the fourth bolt block 5 and the pressure rod 6 are integrally in threaded connection with the protection mechanism 1.

Specifically, protection machanism 1 includes compression leg 11, first internal thread 12, spacing groove 13, second internal thread 14 and protective cover 15, the inside top center department of protective cover 15 is equipped with columniform compression leg 11, just be equipped with the spacing groove 13 that second internal thread 14, first internal thread 12 and ring shape set up from inside to outside in proper order on the inside wall of protective cover 15, first internal thread 12 and second internal thread 14's setting promotes through the meshing between the screw thread, makes compression leg 11 drive depression bar 6 inwards promote to the convenience is fixed to protective cover 15, and further realization is to the holistic sealing of bolt, makes sealed effect better.

Specifically, depression bar 6 includes slider 61, just slider 61 is the symmetry setting, slider 61 is the wedge structure, just slider 61 with 7 sliding connection of spout, when using, the promotion to stop gear 9 is realized to columniform depression bar 6, and slider 61 of wedge structure can slowly make stop gear 9's pin 92 release, realizes the fixed to protective cover 15.

Specifically, the diameter of the cylinder of the pressure lever 6 is equal to the diameter of the through hole 8, and the width of the sliding block 61 is equal to the diameter of the sliding chute 7; the length of depression bar 6 is less than the length of spout 7 makes slider 61 can block in the inside at spout 7 just when using, if the dead phenomenon of rust card appears in the later stage, can extract depression bar 6 and pour into lubricating oil into, conveniently separately pull down.

Specifically, the limiting mechanism 9 comprises a stopper 91, a stopper rod 92, a return spring 93 and a limiting ball 94, a limiting hole 9a is formed in the sliding groove 7 of the first bolt block 2 and the fourth bolt block 5, the limiting mechanism 9 is slidably mounted in the limiting hole 9a, the stopper 91 is arranged on the side wall of the stopper rod 92, and the limiting ball 94 is arranged at the end of the stopper rod 92; the cover is equipped with reset spring 93 on pin 92's the lateral wall, just pin 92's one end is the hemisphere, and hemisphere one end pin 92 is contradicted slider 61, when using, setting up of dog 91 makes things convenient for reset of reset spring 93, and spacing ball 94 can be quick with spacing groove 13 cooperation block, simultaneously, also when making things convenient for later stage to change protective cover 15, pull down, and is further, the realization that pin 92 that the splayed set up can be better is to protective cover 15's fastening.

Specifically, the diameter of the limiting ball 94 is equal to the diameter of the limiting groove 13, so that the limiting ball 94 can be better clamped in the limiting groove 13 when in use.

Specifically, the inner side wall of the first bolt block 2 is symmetrically provided with first clamping grooves 21, the inner side wall of the fourth bolt block 5 is symmetrically provided with second clamping grooves 51, and the first clamping grooves 21 and the second clamping grooves 51 have the same structure; first clamping blocks 31 are symmetrically arranged on two sides of the second bolt block 3, second clamping blocks 41 are symmetrically arranged on two sides of the third bolt block 4, the first clamping blocks 31 and the second clamping blocks 41 have the same structure, and the two first clamping blocks 31 are respectively clamped with the first clamping groove 21 and the second clamping groove 51; two second fixture block 41 respectively with first draw-in groove 21 and second draw-in groove 51 block, first fixture block 31 and second fixture block 41 are the flexure strip, when using, can prevent to take place the skew between the bolt piece when wrench movement bolt, simultaneously, when appearing the card and dying or rust phenomenon, can be better tear down the bolt piece to prevent the damage of screw thread, convenient recycling uses.

Specifically, the first bolt block 2, the second bolt block 3, the third bolt block 4 and the fourth bolt block 5 are sequentially provided with a first threaded end a, a head end b, a screw end c and a second threaded end d from top to bottom, the maximum diameter of the head end b is smaller than that of the first threaded end a, and the maximum diameter of the head end b is larger than that of the second threaded end d.

When in use, firstly, the first bolt block 2, the second bolt block 3, the third bolt block 4 and the fourth bolt block 5 are combined into a whole, the first clamping block 31 at one side of the second bolt block 3 is aligned with the first clamping groove 21 of the first bolt block 2, the first clamping block 31 at the other side of the second bolt block 3 is aligned with the second clamping groove 51 of the fourth bolt block 5, the second clamping block 41 at one side of the third bolt block 4 is aligned with the first clamping groove 21 of the first bolt block 2, the second clamping block 41 at the other side of the third bolt block 4 is aligned with the second clamping groove 51 of the fourth bolt block 5, so that the bolts on the outer side walls of the second bolt block 3 and the third bolt block 4 are closed with the external threads on the first bolt block 2 and the fourth bolt block 5 to form complete threads, and the first bolt block 2, the second bolt block 3, the third bolt block 4 and the fourth bolt block 5 are more tightly connected through the matching of the clamping grooves, the bolt is prevented from sliding between outer bolts when in use, the bolt is prevented from being locked, after connection is completed, the pressure lever 6 is placed into the formed through hole 8, the diameter of the pressure lever 6 is equal to that of the through hole 8, the slide block 61 on the side wall of the pressure lever 6 is just clamped into the slide groove 7, the slide groove 7 is internally provided with a limiting hole 9a of the limiting mechanism 9, the manual pushing pressure lever 6 moves downwards along the slide groove 7, at the moment, the limiting mechanism 9 does not extend out of the side walls of the first bolt block 2 and the fourth bolt block 5, then, the first internal thread 12 of the protection mechanism 1 is in threaded connection with the first thread end a, the protection mechanism 1 is rotated to enable the pressure column 11 to push the pressure lever 6 to slide downwards, at the moment, the limiting mechanism 9 does not abut against the slide block 61, the whole fixation of the bolt is realized through the protective cover 15 of the protection mechanism 1, the bolt is screwed into a bolt hole of, the bolt is integrally embedded into the bolt hole, when the second thread end d and the screw rod end c extend into the bolt hole, the nut end b is rotated by a wrench to fix the bolt and the bolt hole, at the moment, the outlet of the limiting mechanism 9 is positioned outside the bolt hole, the protective cover 15 is manually rotated, the press rod 6 advances inwards through the matching between the second internal thread 14 and the first thread end a, the protective cover 15 is continuously rotated to ensure that the first internal thread 12 is connected with the thread end a in a matching manner, the press column 11 is driven to push the press rod 6 to extrude the stop lever 92 of the limiting mechanism 9, the stop lever 92 is driven outwards along the limiting hole 9a by the wedge-shaped slide block 61, the stop lever 92 is driven outwards in a splayed shape, the limiting groove 13 is positioned outside the limiting hole 9a, the stop lever 92 drives the limiting ball 94 to extend into the limiting groove 13 along with the rotation of the protective cover 15, the tail end of the press rod 6 is abutted against the end of the press, the limiting hole 9a is obliquely arranged, an outlet of the limiting hole 9a is located at the nut end b, the protective cover 15 is continuously rotated to enable the outer side of the sliding block 61 to completely abut against the stop lever 92, the stop lever 92 is pushed to drive the limiting ball 94 to be clamped into the limiting groove 13, the protective cover 15 is fastened with the bolt, meanwhile, the length of the inside of the protective cover 15 is equal to the vertical length of the sum of the first threaded end a and the nut end b, the nut end b is protected, meanwhile, the bolt is protected, the bolt is prevented from being stolen, at the moment, a part of the tail end of the pressure rod 6 is left outside the top surface of the first threaded end a of the bolt, and further, the protective cover 15 is meshed with the first threaded end a to seal the inside; when the iron frame or the metal framework needs to be adjusted and maintained, the anti-theft bolt needs to be dismantled, a part is dug in the center of the protective cover 15 through a special tool, the compression column 11 falls off, the dug diameter is larger than that of the compression column 11, the compression rod 6 is pried outwards through the tool until the end part of the stop lever 92 of the limiting mechanism 9 penetrates through the head part of the compression rod 6, at the moment, the stop lever 92 is restored under the action of the reset spring 93, the limiting ball 94 is separated from the limiting groove 13, the protective cover 15 is taken off, the bolt is integrally taken out, if the rusting and blocking phenomenon appears for a long time in outdoor use, the compression rod 6 is pulled out, the second bolt block 3 and the third bolt block 4 are moved towards the center, the first clamping block 31 and the second clamping block 41 are elastic sheets, the second bolt block 3 and the third bolt block 4 are separated from the first bolt block 2 and the fourth bolt block 5 when the second bolt block 3 and the third bolt block 4 are moved towards the center, dismantle second bolt piece 3 and third bolt piece 4, dismantle first bolt piece 2 and fourth bolt piece 5 at last, prevent the damage to the downthehole screw thread of bolt at the dismantlement in-process, simultaneously, as long as change protective cover 15 realizes the used repeatedly of bolt.

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, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An anti-theft bolt which is characterized in that: the bolt comprises a protection mechanism (1), a first bolt block (2), a second bolt block (3), a third bolt block (4), a fourth bolt block (5), a pressure rod (6) and a limiting mechanism (9), wherein the first bolt block (2) and the fourth bolt block (5) are identical in structure, the second bolt block (3) and the third bolt block (4) are identical in structure, the first bolt block (2), the second bolt block (3), the third bolt block (4), the fourth bolt block (5) and the pressure rod (6) are combined to form a bolt whole, sliding grooves (7) are formed in the inner sides of the first bolt block (2) and the fourth bolt block (5), the limiting mechanism (9) is installed inside the sliding grooves (7), and through holes (8) are formed in the middle of the inner sides of the first bolt block (2), the second bolt block (3), the third bolt block (4) and the fourth bolt block (5), the pressure lever (6) is arranged in the through hole (8); the first bolt block (2), the second bolt block (3), the third bolt block (4), the fourth bolt block (5) and the pressure lever (6) form a whole body and are in threaded connection with the protection mechanism (1);

protection machanism (1) is including compression leg (11), first internal thread (12), spacing groove (13), second internal thread (14) and protective cover (15), the inside top center department of protective cover (15) is equipped with columniform compression leg (11), just spacing groove (13) that the inside wall of protective cover (15) was equipped with second internal thread (14), first internal thread (12) and ring shape from inside to outside in proper order and set up.

2. An anti-theft bolt according to claim 1, wherein: the pressing rod (6) comprises sliding blocks (61), the sliding blocks (61) are symmetrically arranged, the sliding blocks (61) are of wedge-shaped structures, and the sliding blocks (61) are in sliding connection with the sliding grooves (7).

3. An anti-theft bolt according to claim 2, wherein: the diameter of a cylinder of the pressure lever (6) is equal to that of the through hole (8), and the width of the sliding block (61) is equal to that of the sliding groove (7); the length of the compression bar (6) is smaller than that of the sliding groove (7).

4. An anti-theft bolt according to claim 2, wherein: the limiting mechanism (9) comprises a stop block (91), a stop rod (92), a return spring (93) and a limiting ball (94), limiting holes (9a) are formed in sliding grooves (7) of the first bolt block (2) and the fourth bolt block (5), the limiting mechanism (9) is installed in the limiting holes (9a) in a sliding mode, the stop block (91) is arranged on the side wall of the stop rod (92), and the limiting ball (94) is arranged at the end portion of the stop rod (92); the outer side wall of the stop lever (92) is sleeved with a return spring (93), one end of the stop lever (92) is hemispherical, and the stop lever (92) at one hemispherical end abuts against the sliding block (61).

5. An anti-theft bolt according to claim 4, wherein: the diameter of the limiting ball (94) is equal to that of the limiting groove (13).

6. An anti-theft bolt according to claim 1, wherein: first clamping grooves (21) are symmetrically formed in the inner side wall of the first bolt block (2), second clamping grooves (51) are symmetrically formed in the inner side wall of the fourth bolt block (5), and the first clamping grooves (21) and the second clamping grooves (51) are identical in structure; first clamping blocks (31) are symmetrically arranged on two sides of the second bolt block (3), second clamping blocks (41) are symmetrically arranged on two sides of the third bolt block (4), the first clamping blocks (31) and the second clamping blocks (41) are identical in structure, and the two first clamping blocks (31) are clamped with a first clamping groove (21) and a second clamping groove (51) respectively; the two second clamping blocks (41) are respectively clamped with the first clamping groove (21) and the second clamping groove (51), and the first clamping block (31) and the second clamping block (41) are elastic pieces.

7. An anti-theft bolt according to claim 1, wherein: the first bolt block (2), the second bolt block (3), the third bolt block (4) and the fourth bolt block (5) are sequentially provided with a first threaded end (a), a head end (b), a screw rod end (c) and a second threaded end (d) from top to bottom, the maximum diameter of the head end (b) is smaller than that of the first threaded end (a), and the maximum diameter of the head end (b) is larger than that of the second threaded end (d).