CN218377259U

CN218377259U - Square head pressing bolt

Info

Publication number: CN218377259U
Application number: CN202222551682.8U
Authority: CN
Inventors: 陆优明
Original assignee: Shanghai Qunli Fastener Manufacturing Co ltd
Current assignee: Shanghai Qunli Fastener Manufacturing Co ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-01-24
Anticipated expiration: 2032-09-26

Abstract

The application relates to a square-head bolt according to a drawing, which relates to the field of fasteners and comprises a bolt head and a screw rod arranged at the bottom of the bolt head; the screw rod wall is provided with a mounting groove, a locking block is arranged in the mounting groove, and the locking block comprises an elastic piece arranged on the wall of the mounting groove and a limiting piece fixedly connected with the elastic piece. Detachably is connected with the nut on the screw rod, and the confession is seted up to the nut inner wall the draw-in groove of latch segment installation. The nut rotates and installs on the bolt, when the top of nut contacts the bottom of spacing piece, the nut continues to be rotatory to the direction that is close to the bolt head, under the effect of nut force, spacing piece rotates to the direction that is close to the mounting groove, until the latch segment inlays completely and locates in the mounting groove, the draw-in groove just right latch segment this moment, spacing piece is under the effect of elastic component reconversion, the joint is in the draw-in groove, the restriction nut is unscrewed from the screw rod, and then traditional bolt has been improved effectively, the nut is dismantled from the article easily, and then lead to the stolen phenomenon of article.

Description

Square head pressing bolt

Technical Field

The application relates to the field of fasteners, in particular to a square-head bolt according to a drawing.

Background

Fasteners are a very widely used class of mechanical parts for fastening connections. Fasteners are used in a wide variety of industries including energy, electronics, electrical, mechanical, chemical, metallurgical, mold, hydraulic, and the like, and a wide variety of fasteners are found on a variety of machines, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemical, instrumentation, supplies, and the like. It features that it has various specifications including bolt, screw, nut, washer and pin, and has different functions and very high standardization, serialization and universalization degrees.

The bolt is a cylindrical threaded fastener with a nut. The bolt consists of a bolt head and a screw (a cylinder with external threads) and is used for fastening and connecting two parts with through holes. This form of connection is known as a bolted connection. The nut can be unscrewed from the bolt, and the two parts can be separated, so that the bolt connection belongs to detachable connection.

In view of the above-mentioned related technologies, the inventor believes that a bolt fastener commonly used in the market is easily disassembled from a nut and a bolt by using a wrench, and thus, objects fixed by the bolt and the nut are separated, and the phenomenon of theft is easily caused in special places such as iron towers and railway tracks.

SUMMERY OF THE UTILITY MODEL

In order to improve traditional bolt, nut and dismantle from the article easily, and then lead to the stolen phenomenon of article, this application provides a square head according to picture bolt.

The application provides a square head is according to picture bolt adopts following technical scheme:

a square head bolt comprises a bolt head and a screw rod arranged at the bottom of the bolt head; the outer wall of the screw rod is provided with threads, a mounting groove is formed in the wall of the screw rod, a locking block is arranged in the mounting groove and comprises an elastic piece arranged on the wall of the mounting groove and a limiting piece fixedly connected with the elastic piece, the screw rod is detachably connected with a nut, the inner wall of the nut is provided with a clamping groove for installing the locking block, and the elastic piece can enable the limiting piece to be completely installed in the mounting groove.

Through adopting above-mentioned technical scheme, the compression elastic component for spacing piece inlays completely to be located in the mounting groove, screws up the nut, after fixing the nut, the position of draw-in groove is just to the latch segment, at this moment, with the help of the power that the elastic component resumes deformation, drives the latch segment and installs in the draw-in groove, the cell wall of draw-in groove and the side butt of latch segment, the restriction nut is unscrewed from the screw rod, and then improved traditional bolt effectively, the nut is dismantled from the article easily, and then lead to the stolen phenomenon of article.

Optionally, a rotating shaft is arranged on a groove wall of the mounting groove, a mounting cavity for mounting the rotating shaft is formed in the bottom end of the limiting piece, and the rotating shaft can rotate in the mounting cavity.

Through adopting above-mentioned technical scheme, the bottom of spacing piece with the cell wall of mounting groove is rotated and is connected, and when the in-process of screw rod was twisted to the nut, one side that the nut is close to the bolt head contacts the bottom of spacing piece earlier, and along with the nut continues to screw up, the elastic component is compressed, inlays to locate in the draw-in groove until the latch segment. In the process, the locking block is installed in the clamping groove only by screwing the nut on the screw rod, and the operation is simple and convenient.

Optionally, an insertion opening is formed in the bolt head, an accommodating cavity is formed in the screw rod, the insertion opening is communicated with the accommodating cavity to form a cavity, and a abdicating hole communicated with the accommodating cavity is formed in the screw rod; the top end of the limiting piece is provided with a sliding piece which can be inserted into the yielding hole.

By adopting the technical scheme, when the bolt and the nut are required to be detached from the fixed object, the tool can be inserted into the cavity, the sliding sheet is adjusted, the elastic piece is compressed, the locking block is separated from the clamping groove, and then the nut is screwed down. The cavity and the sliding sheet are arranged, so that the locking block can be installed in the clamping groove to achieve the anti-theft function, and can be detached.

Optionally, the sliding piece includes a connecting end connected with the limiting piece and an adjusting end located in the accommodating cavity, and an adjusting column is arranged on the adjusting end.

Through adopting above-mentioned technical scheme, when needs are unscrewed the nut from the screw rod, make the elastic component compression through adjusting the regulation post, and then drive spacing piece and break away from the draw-in groove.

Optionally, a push rod for adjusting the movement of the adjusting column in the accommodating cavity is detachably inserted in the cavity.

Through adopting above-mentioned technical scheme, when the nut needs to be unscrewed, insert the catch bar and locate in the cavity, under the effect of human power, the catch bar stirs the regulation post for the elastic component compression breaks away from the draw-in groove completely up to the latch segment.

Optionally, the rotating shaft and the mounting cavity are provided with two groups.

Through adopting above-mentioned technical scheme, effectively reduce when a pivot damages, spacing piece bottom breaks away from the cell wall of mounting groove, blocks the probability that this problem of screw rod takes place to screw up the nut.

Optionally, the locking block, the mounting groove, the adjusting column and the clamping groove are provided with two sets.

By adopting the technical scheme, the two groups of locking blocks and the clamping grooves are arranged, so that the resistance of the nut which is screwed down from the screw rod is increased, and the anti-theft performance is improved; simultaneously, two sets of latch segments all can break away from in the draw-in groove under the cooperation of catch bar and regulation post, and then make nut and bolt can realize locking and prevent that the article is stolen, can realize dismantling the connection again.

Optionally, the two groups of adjusting columns are staggered in the accommodating cavity.

Through adopting above-mentioned technical scheme, promoting through the catch bar and adjusting the in-process that the post made the latch segment break away from the draw-in groove, can prevent effectively that two sets of catch bars from contacting and mutual interference, lead to the latch segment can't break away from in the draw-in groove completely, and then can't realize dismantling of bolt and nut and be connected.

Optionally, the bolt head is a cube.

By adopting the technical scheme, the size of the commonly used spanner can be adjusted, and the spanner is suitable for a hexagonal bolt or a hexagonal nut, so that the anti-theft performance can be further improved by arranging the bolt head as a square; in addition, when the section of bolt installation was during the groove of rectangle, the bolt head can be just by the lateral wall chucking of groove, avoids skidding, compares the button head bolt fastness better.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the arrangement of the locking block and the clamping groove ensures that the locking block is embedded in the clamping groove when the nut is screwed on the screw rod to limit the nut from being screwed off from the screw rod, thereby improving the anti-theft performance of the bolt;

2. the arrangement of the adjusting column and the cavity ensures that the locking block can be separated from the clamping groove under the condition of using a special tool, so that the nut can be screwed off from the screw rod, thereby improving the anti-theft performance of the bolt and realizing the detachable connection of the bolt and the nut;

3. through setting up two sets of latch segments and two sets of draw-in grooves, further increased the nut from the resistance that the screw rod was spun down, further improved the theftproof performance of bolt.

Drawings

FIG. 1 is an exploded view of the locking block and the threaded rod showing the positional relationship therebetween;

FIG. 2 is a cross-sectional view of the hitch of the locking block showing the locking block engaged in the channel;

FIG. 3 is a cross-sectional view of the locking block card being disengaged from the slot with the push rod highlighted;

FIG. 4 is a cross-sectional view highlighting the spindle and mounting cavity.

Description of the reference numerals: 1. a bolt head; 2. a screw; 21. mounting grooves; 22. a hole of abdication; 23. a rotating shaft; 3. a nut; 4. a locking block; 41. a limiting sheet; 411. a mounting cavity; 42. a slide sheet; 421. a connecting end; 422. an adjustment end; 43. an elastic member; 5. a card slot; 6. a chamber; 61. an insertion opening; 62. an accommodating chamber; 7. a push rod; 71. a pushing part; 72. an operation section; 8. and (4) adjusting the column.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a square-head bolt according to a drawing.

Referring to fig. 1, the square head bolt comprises a bolt head 1 and a screw rod 2, wherein the screw rod 2 and the bolt head 1 are integrally formed by casting. A nut 3 is detachably attached to the screw 2. The outer wall of the screw rod 2 and the inner wall of the nut 3 are provided with threads. The bolt head 1 of the embodiment of the application is cast into a cube, the nut 3 is set to be the quadrangular nut 3, and as most of wrenches used in daily life can be adjusted in size and are suitable for hexagonal bolts or hexagonal nuts 3 with different sizes, the quadrangular bolt and the quadrangular nut 3 have higher anti-theft performance; in addition, when the section of bolt installation was the rectangular channel, bolt head 1 can be just by the lateral wall chucking of groove, avoids skidding, compares the button head bolt fastness better.

Referring to fig. 2 and 3, a locking block 4 is arranged on the screw rod 2, a clamping groove 5 is formed in the inner wall of the nut 3, when the nut 3 is installed on the screw rod 2, the locking block 4 is embedded in the clamping groove 5 to limit the rotation of the nut 3, and therefore the nut 3 is effectively prevented from being unscrewed from the screw rod 2, and the anti-theft performance of the bolt is improved. Offer cylindric cavity 6 in the bolt is inside, can insert in cavity 6 and establish catch bar 7 for adjust latch segment 4 and break away from draw-in groove 5, make when improving bolt theftproof performance, realized bolt and nut 3's detachable connection again.

The screw 2 is provided with an installation groove 21, the top of the installation groove 21 is provided with a yielding hole 22, and the yielding hole 22 is communicated with the chamber 6; the locking block 4 comprises a limiting sheet 41 connected to the groove wall of the mounting groove 21, a sliding sheet 42 cast and integrally formed with the limiting sheet 41 and an elastic piece 43 connected with the sliding sheet 42, wherein one side of the elastic piece 43 is welded on the side wall of the limiting sheet 41 close to the mounting groove 21; the rotating shaft 23 is integrally formed on the side wall of the bottom of the mounting groove 21, a mounting cavity 411 for mounting the rotating shaft 23 is formed at the bottom of the limiting piece 41, and the rotating shaft 23 can rotate in the mounting cavity 411 (refer to fig. 4). When preventing the spacing piece from rotating, the bottom abuts against the groove wall of the mounting groove to limit the rotation of the spacing piece, so that the periphery of the bottom of the spacing piece 41 is arc-shaped. The locking block 4 and the screw 2 are connected in the following specific manner: the rotating shaft 23 rotates in the mounting cavity 411, so that the limiting piece 41 is hinged to the groove wall at the bottom end of the mounting groove 21, one side of the elastic piece 43 is welded on the side wall, close to the mounting groove 21, of the limiting piece 41, and the other side of the elastic piece 43 abuts against the groove wall of the mounting groove 21; the sliding piece 42 is inserted into the receding hole 22, when the elastic member 43 is compressed, the limiting piece 41 rotates towards the direction close to the installation groove 21, and meanwhile, the sliding piece 42 slides towards the cavity 6 until the locking block 4 is completely embedded in the installation groove 21. In the natural state of the elastic member 43, the stopper piece 41 is disengaged from the mounting groove 21. In this embodiment, the elastic member 43 is a spring. The bottom of mounting groove 21 both sides lateral wall all is provided with pivot 23, prevents effectively that when a pivot 23 damages, spacing piece 41 bottom breaks away from the cell wall of mounting groove 21, blocks that nut 3 installs on screw rod 2.

The chamber 6 comprises an insertion opening 61 arranged on the bolt head 1 and an accommodating cavity 62 arranged in the screw rod 2, and the abdicating opening is communicated with the accommodating cavity 62. The sliding piece 42 comprises a connecting end 421 connected with the limiting piece 41 and an adjusting end 422 inserted into the accommodating cavity 62, and a cylindrical adjusting column 8 is integrally formed on one side of the adjusting end 422 close to the bolt head 1 by casting. The push rod 7 used for pushing the adjusting column 8 is detachably inserted into the cavity 6, the push rod 7 comprises a push part 71 abutted to the outer wall of the top of the adjusting column 8 and an operation part 72 operated by a human hand, in order to enable the push part 71 to push the adjusting column 8 more stably, the push part 71 is arranged to be an arc-shaped plate, and the operation part 72 extends out of the insertion hole 61 to facilitate the operation of the human hand. In the embodiment, two groups of locking blocks 4, mounting grooves 21, adjusting columns 8 and clamping grooves 5 are arranged, and two groups of locking blocks 4 are clamped in the nut 3, so that the resistance of the nut 3 rotating down from the screw rod 2 is further increased, and the anti-theft performance is further improved; simultaneously, two sets of latch segments 4 all can break away from in the draw-in groove 5 under the cooperation of catch bar 7 and regulation post 8, and then make nut 3 and bolt can realize locking and prevent that the article is stolen, can realize dismantling the connection again.

In the embodiment, the two groups of adjusting columns 8 are arranged in the accommodating cavity 62 in a staggered manner, so that in the process of operating the push rod 7 to separate the locking block 4 from the clamping groove 5, the two groups of adjusting columns 8 are prevented from contacting with each other to limit the locking block 4 to be completely separated from the clamping groove 5, and the detachable connection of the bolt and the nut 3 cannot be realized; secondly, if two sets of regulation posts 8 can take place the contact at the in-process that is promoted by catch bar 7, for making latch segment 4 break away from draw-in groove 5 completely, need the increase and hold the width of chamber 62, and then lead to holding the chamber wall of chamber 62 very thin, greatly reduced the intensity of screw rod 2, lead to screw rod 2 fragile, and then also reduced the theftproof performance.

The implementation principle of the square head bolt according to the drawing in the embodiment of the application is as follows: use fastening some special at the cooperation of needs bolt and nut 3, when the article of easily stolen, nut 3 is rotating the in-process of installing on the bolt, when the top contact spacing piece 41's of nut 3 bottom, nut 3 continues to rotate to the direction that is close to bolt head 1, under the effect of nut 3 power, spacing piece 41 rotates to the direction that is close to mounting groove 21, until latch segment 4 inlays completely in mounting groove 21, draw-in groove 5 is just to latch segment 4 this moment, spacing piece 41 is under the effect of elastic component 43 reconversion, the joint is in draw-in groove 5. When the nut 3 needs to be unscrewed from the bolt, the adjusting column 8 needs to be pushed by the aid of the push rod 7, so that the locking block 4 is completely separated from the clamping groove 5, and the nut 3 can be unscrewed by tools such as a wrench. This application square head is according to the drawing bolt when using with nut 3 cooperation, not only can promote its theftproof performance, can dismantle nut 3 with the help of special instrument under the condition such as needs maintenance article simultaneously.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a square head is according to picture bolt which characterized in that: comprises a bolt head (1) and a screw rod (2) arranged at the bottom of the bolt head (1); screw rod (2) outer wall is provided with the screw thread, just mounting groove (21) have been seted up on screw rod (2) wall, be provided with latch segment (4) in mounting groove (21), latch segment (4) including set up in elastic component (43) on mounting groove (21) cell wall and with elastic component (43) fixed connection's spacing piece (41), detachably is connected with nut (3) on screw rod (2), the confession has been seted up to nut (3) inner wall draw-in groove (5) of mounting of latch segment (4), the compression elastic component (43) can make spacing piece (41) install in mounting groove (21) completely.

2. The square-headed drawing bolt according to claim 1, wherein: be provided with pivot (23) on the cell wall of mounting groove (21), the confession has been seted up to the bottom of spacing piece (41) installation cavity (411) of pivot (23) installation, pivot (23) can installation cavity (411) internal rotation.

3. The square-headed drawing bolt according to claim 1, wherein: the bolt head (1) is provided with an insertion hole (61), the screw rod (2) is internally provided with an accommodating cavity (62), the insertion hole (61) is communicated with the accommodating cavity (62) to form a cavity (6), and the screw rod (2) is provided with a yielding hole (22) communicated with the accommodating cavity (62); the top end of the limiting piece (41) is provided with a sliding piece (42) which can be inserted into the abdicating hole (22).

4. A square-headed stud according to claim 3, characterised in that: the sliding sheet (42) comprises a connecting end (421) connected with the limiting sheet (41) and an adjusting end (422) located in the accommodating cavity (62), and an adjusting column (8) is arranged on the adjusting end (422).

5. The square-headed stud according to claim 4, wherein: a push rod (7) used for adjusting the movement of the adjusting column (8) in the accommodating cavity (62) is detachably inserted in the cavity (6).

6. The square-headed stud according to claim 2, wherein: the rotating shaft (23) and the mounting cavity (411) are provided with two groups.

7. The lag bolt according to claim 5, wherein: the locking block (4), the mounting groove (21), the adjusting column (8) and the clamping groove (5) are provided with two groups.

8. The lag bolt according to claim 5, wherein: the two groups of adjusting columns (8) are arranged in the accommodating cavity (62) in a staggered mode.

9. A lag bolt according to claim 1, wherein: the bolt head (1) is a cube.