CN114893487A

CN114893487A - Quick bolt

Info

Publication number: CN114893487A
Application number: CN202210353962.XA
Authority: CN
Inventors: 李玉龙
Original assignee: Individual
Current assignee: Shenzhen Shuntian Hardware Products Co ltd
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-08-12
Anticipated expiration: 2042-04-06
Also published as: CN114893487B

Abstract

The invention discloses a quick bolt which comprises a bolt head, wherein a shaft rod extending downwards is arranged on the lower end face of the bolt head, a convex shoulder is arranged at the lower end of the shaft rod, an external thread component is arranged between the bolt head and the convex shoulder on the outer side of the circumference of the shaft rod, a rotating disc is rotatably connected in the bolt head and is connected with the external thread component, the external thread component is spread to form a threaded column when the rotating disc rotates to a first position, and the external thread component is drawn close to the shaft rod and shrinks when the rotating disc rotates to a second position; a positioning assembly is arranged on the outer side of the shaft rod and used for positioning the external thread assembly at a position where the external thread assembly is spread to form a threaded column; the quick bolt is simple in structure and can be quickly disassembled.

Description

Quick bolt

Technical Field

The invention relates to the technical field of bolts, in particular to a quick bolt.

Background

The bolt in the prior art is a fastener consisting of a head part and a screw rod, needs to be matched with a nut and is used for fastening and connecting two parts with through holes. If the nut is unscrewed from the bolt, the two parts can be separated, so that the bolt connection belongs to detachable connection. In prior art, because the existing bolt of threaded connection's characteristic need be earlier when dismantling the nut from the bolt unscrewing, then can dismantle the bolt, and this process needs longer time, and to a plurality of bolted fastening's part, it is huge to need to consume work load when dismantling.

Disclosure of Invention

The invention aims to provide a quick bolt which is simple in structure and can be quickly disassembled.

In order to achieve the purpose, the invention provides the following technical scheme: a quick bolt comprises a bolt head, wherein a shaft rod extending downwards is arranged on the lower end face of the bolt head, a convex shoulder is arranged at the lower end of the shaft rod, an external thread assembly is arranged between the bolt head and the convex shoulder on the outer side of the circumference of the shaft rod, a rotating disc is connected in the bolt head in a rotating mode, the rotating disc is connected with the external thread assembly, the external thread assembly is spread to form a threaded column when the rotating disc rotates to a first position, and the external thread assembly is drawn close to the shaft rod and shrinks when the rotating disc rotates to a second position; and a positioning assembly is arranged on the outer side of the shaft rod and used for positioning the external thread assembly at a position where the external thread assembly is spread to form a threaded column.

Further, the external thread assembly comprises a plurality of arc-shaped thread pieces, and the arc-shaped thread pieces are uniformly arranged on the outer side of the shaft rod at intervals along the circumferential direction of the shaft rod; a plurality of arc-shaped grooves which are in one-to-one correspondence with the arc-shaped thread pieces are uniformly arranged in the bolt head along the circumferential direction of the shaft lever at intervals, a plurality of radial grooves which are in one-to-one correspondence with the arc-shaped grooves are arranged in the rotating disc, the upper end of each arc-shaped thread piece is provided with an arc-shaped shifting plate which extends into the arc-shaped groove corresponding to the arc-shaped thread piece, and the upper end of each arc-shaped shifting plate is provided with a convex rod which extends upwards and extends into the radial groove; when the rotating disc rotates to the first position, the convex rod is located at the far end of the radial groove, and when the rotating disc rotates to the second position, the convex rod is located at the near end of the radial groove.

Further, an inner hexagonal groove with an opening at the upper end is formed in the rotating disc; the arrangement of the inner hexagonal groove can facilitate the rotation of the rotating disk by an inner hexagonal wrench.

Furthermore, the positioning assembly comprises a positioning sliding sleeve, the positioning sliding sleeve slides outside the shaft lever along the axial direction of the shaft lever, a positioning disc is arranged at the lower end of the positioning sliding sleeve, and a groove for the positioning disc to extend into is formed in the convex shoulder; a first spring used for forcing the positioning plate to move upwards is arranged in the groove; the rotary plate is internally provided with a positioning hole with an opening at the lower end, the upper end of the positioning sliding sleeve is provided with a positioning pin used for penetrating through a bolt head and extending into the positioning hole, and the positioning hole is connected with a positioning rod with the upper end extending into the inner hexagonal groove in a sliding manner.

Further, when the rotary disk rotates to the first position, the positioning pin stretches into the positioning hole, the upper end of the positioning rod stretches into the inner hexagonal groove, when the rotary disk rotates to the second position, the positioning pin is separated from the positioning hole, and the lower end of the positioning rod abuts against the bolt head.

Furthermore, a vertical sliding groove is axially formed in the positioning sliding sleeve, and a limiting sliding pin extending into the vertical sliding groove is fixedly arranged on the outer side of the shaft rod; the positioning sliding sleeve is guaranteed to slide along the axial direction of the shaft rod through the matching of the limiting sliding pin and the vertical sliding groove.

Furthermore, a rotating groove coaxial with the shaft rod is arranged in the bolt head, and the rotating disc is rotatably connected in the rotating groove.

Advantageous effects

Compared with the prior art, the technical scheme of the invention has the following advantages:

1. the split type arc-shaped thread pieces are used, so that the arc-shaped thread pieces are connected end to end and can be spliced into a whole thread column, and the arc-shaped thread pieces are contracted towards the center of the shaft rod by controlling the arc-shaped thread pieces to slide, so that the arc-shaped thread pieces can be separated from the threaded connection with the nut, and the nut can be quickly dismounted;

2. the arc-shaped thread pieces with the arc-shaped ends are used, so that the arc-shaped thread pieces cannot touch each other when sliding towards the center, and the arc-shaped thread pieces can smoothly contract;

3. the rotating disc is matched with the bolt head, so that the arc-shaped thread piece can be driven to move by controlling the rotating disc to rotate and shrink towards the center, and the operation is fast and convenient;

4. through using the positioning sliding sleeve for when the arc thread piece struts and splices into the screw thread post, the positioning sliding sleeve drives the positioning disk under the promotion of first spring and gets into inside a plurality of arc thread pieces, and then supports arc thread piece, and positioning sliding sleeve upper end locating pin and rotary disk cooperation simultaneously fix a position the rotary disk, and then fix a position arc thread piece. So that the threaded column formed by the arc-shaped threaded sheets is stable and durable.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1 in accordance with the present invention;

FIG. 4 is a cross-sectional view taken along line C-C of FIG. 1 in accordance with the present invention;

FIG. 5 is a cross-sectional view of the bolt of the present invention as it is removed;

FIG. 6 is a cross-sectional view taken along line D-D of FIG. 5 in accordance with the present invention;

FIG. 7 is a cross-sectional view taken in the direction E-E of FIG. 5 in accordance with the present invention;

fig. 8 is a sectional view taken in the direction F-F of fig. 5 in accordance with the present invention.

Detailed Description

Referring to fig. 1-8, a quick bolt includes a bolt head 1, a shaft rod 1a extending downward is disposed on a lower end surface of the bolt head 1, a shoulder 1b is disposed at a lower end of the shaft rod 1a, an external thread assembly is disposed between the bolt head 1 and the shoulder 1b on an outer circumferential side of the shaft rod 1a, a rotating disk 2 is rotatably connected to the bolt head 1, in this embodiment, a rotating slot 1c coaxial with the shaft rod 1a is disposed in the bolt head 1, and the rotating disk 2 is rotatably connected to the rotating slot 1 c; the rotating disc 2 is connected with the external thread assembly, when the rotating disc 2 rotates to a first position, the external thread assembly is spread to form a thread column, and when the rotating disc 2 rotates to a second position, the external thread assembly is drawn close to the shaft rod 1a to shrink; and a positioning assembly is arranged on the outer side of the shaft rod 1a and is used for positioning the external thread assembly at a position where a threaded column is formed by expansion.

The external thread assembly comprises a plurality of arc-shaped thread pieces 33, and the arc-shaped thread pieces 33 are uniformly arranged on the outer side of the shaft rod 1a at intervals along the circumferential direction of the shaft rod 1 a; a plurality of arc-shaped grooves 11 which are in one-to-one correspondence with the arc-shaped thread pieces 33 are uniformly arranged in the bolt head 1 along the circumferential direction of the shaft rod 1a at intervals, a plurality of radial grooves 21 which are in one-to-one correspondence with the arc-shaped grooves 11 are arranged in the rotating disc 2, the upper end of each arc-shaped thread piece 33 is provided with an arc-shaped shifting plate 31 extending into the corresponding arc-shaped groove 11, and the upper end of each arc-shaped shifting plate 31 is provided with a convex rod 32 extending upwards and extending into the radial groove 21; when the rotary disk 2 rotates to the first position, the convex rod 32 is positioned at the far end of the radial groove 21, and when the rotary disk 2 rotates to the second position, the convex rod 32 is positioned at the near end of the radial groove 21. An inner hexagonal groove 22 with an opening at the upper end is arranged in the rotating disc 2; the provision of the internal hexagonal slot 22 can facilitate rotation of the rotatable disc 2 with an internal hexagonal wrench.

The positioning assembly comprises a positioning sliding sleeve 4, the positioning sliding sleeve 4 slides outside the shaft lever 1a along the axial direction of the shaft lever 1a, in the embodiment, a vertical sliding groove 4a is axially arranged in the positioning sliding sleeve 4, and a limiting sliding pin 4b extending into the vertical sliding groove 4a is fixedly arranged outside the shaft lever 1 a; the positioning sliding sleeve 4 is ensured to slide along the axial direction of the shaft rod 1a through the matching of the limiting sliding pin 4b and the vertical sliding groove 4 a. A positioning disc 4c is arranged at the lower end of the positioning sliding sleeve 4, and a groove 1d for the positioning disc 4c to extend into is arranged in the convex shoulder 1 b; a first spring 5 for forcing the positioning plate 4c to move upwards is arranged in the groove 1 d; a positioning hole 23 with an opening at the lower end is formed in the rotating disc 2, a positioning pin 42 used for penetrating the bolt head 1 to extend into the positioning hole 23 is arranged at the upper end of the positioning sliding sleeve 4, and a positioning rod 6 with an upper end extending into the inner hexagonal groove 22 is connected in the positioning hole 23 in a sliding mode. When the rotating disc 2 rotates to the first position, the positioning pin 42 extends into the positioning hole 23, the upper end of the positioning rod 6 extends into the inner hexagonal groove 22, when the rotating disc 2 rotates to the second position, the positioning pin 42 is separated from the positioning hole 23, and the lower end of the positioning rod 6 abuts against the bolt head 1.

As shown in fig. 1, when the quick bolt of the present invention needs to be disassembled, firstly, a hexagon wrench is inserted into the inner hexagon slot 22 on the rotating disc 2, the positioning pin 42 is pushed downwards by the positioning rod 6, so that the positioning sliding sleeve 4 overcomes the downward movement of the first spring 5, so that the positioning pin 42 exits the positioning hole 23, meanwhile, the positioning disc 4c enters the groove 1d downwards, the positioning disc 4c is placed below the plurality of arc-shaped threaded pieces 33, and the arc-shaped threaded pieces 33 are not prevented from sliding towards the direction approaching to the shaft rod 1a, then the hexagon wrench is rotated counterclockwise, so as to drive the rotating disc 2 to rotate, because the positioning hole 23 and the positioning pin 42 are staggered, and the positioning disc 4c is kept at the position in the groove 1d, in addition, because the arc-shaped shifting plate 31 is in sliding fit in the arc-shaped slot 11, and the protruding rod 32 is in sliding fit in the radial slot 21, when the rotating disc 2 rotates, the arc-shaped threaded pieces 33 are driven to be drawn together towards the direction of the shaft rod 1a along the arc-shaped slot 11, because the arcwall face of arc thread piece 33 head and the tail for arc thread piece 33 can not touch each other when contracting to the center, and when rotary disk 2 rotated to the second position, arc thread piece 33 broke away from the internal thread of nut 8, and the screw bolt separates with nut 8, can pull down the nut fast.

When a fast bolt is needed to be used for fastening connection, firstly, a hexagon wrench is used to insert into the inner hexagon slot 22 on the rotating disc 2, the rotating disc 2 is rotated clockwise, because the arc-shaped shifting plate 31 is in sliding fit in the arc-shaped slot 11, and the convex rod 32 is in sliding fit in the radial slot 21, the arc-shaped thread pieces 33 are driven to slide outwards along the arc-shaped slot 11, when the rotating disc 2 rotates to a first position, the arc-shaped shifting plate 31 moves to the outer end of the arc-shaped slot 11, the arc-shaped thread pieces 33 form a whole circle, all the arc-shaped thread pieces 33 form thread columns, complete threads are arranged on the thread columns, at the moment, the positioning holes 23 are superposed with the positioning pins 42, the hexagon wrench is pulled out, under the action of the first spring 5, the positioning sliding sleeve 4 is pushed to move upwards, the positioning pins 42 enter the positioning holes 23, the rotating disc 2 is positioned, the arc-shaped thread pieces 33 are positioned, and the positioning disc 4c enters the thread columns at the same time, support arc thread piece 33 and form stable structure, quick bolt accomplishes the bolt deformation, then use bolt and nut 8 cooperation installation can.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A quick bolt is characterized by comprising a bolt head, wherein a shaft rod extending downwards is arranged on the lower end face of the bolt head, a convex shoulder is arranged at the lower end of the shaft rod, an external thread assembly is arranged between the bolt head and the convex shoulder on the outer side of the circumference of the shaft rod, a rotating disc is rotatably connected in the bolt head and is connected with the external thread assembly, the external thread assembly is spread to form a threaded column when the rotating disc rotates to a first position, and the external thread assembly is drawn close to the shaft rod and shrinks when the rotating disc rotates to a second position; and a positioning assembly is arranged on the outer side of the shaft rod and used for positioning the external thread assembly at a position where the external thread assembly is spread to form a threaded column.

2. The quick bolt of claim 1, wherein the male screw assembly comprises a plurality of arc-shaped thread pieces, the plurality of arc-shaped thread pieces being evenly provided on an outer side of the shaft at intervals in a circumferential direction of the shaft; a plurality of arc-shaped grooves which are in one-to-one correspondence with the arc-shaped thread pieces are uniformly arranged in the bolt head along the circumferential direction of the shaft lever at intervals, a plurality of radial grooves which are in one-to-one correspondence with the arc-shaped grooves are arranged in the rotating disc, the upper end of each arc-shaped thread piece is provided with an arc-shaped shifting plate which extends into the arc-shaped groove corresponding to the arc-shaped thread piece, and the upper end of each arc-shaped shifting plate is provided with a convex rod which extends upwards and extends into the radial groove; when the rotating disc rotates to the first position, the convex rod is located at the far end of the radial groove, and when the rotating disc rotates to the second position, the convex rod is located at the near end of the radial groove.

3. The quick bolt of claim 2 wherein said rotary disk has an open-topped internal hexagonal slot therein.

4. The quick bolt according to claim 3, wherein the positioning assembly comprises a positioning sliding sleeve, the positioning sliding sleeve slides outside the shaft rod along the axial direction of the shaft rod, a positioning disc is arranged at the lower end of the positioning sliding sleeve, and a groove for the positioning disc to extend into is arranged in the shoulder; a first spring used for forcing the positioning plate to move upwards is arranged in the groove; the positioning structure is characterized in that a positioning hole with an opening at the lower end is formed in the rotating disc, a positioning pin used for penetrating through a bolt head to stretch into the positioning hole is arranged at the upper end of the positioning sliding sleeve, and a positioning rod with an upper end stretching into the inner hexagonal groove is connected in the positioning hole in a sliding mode.

5. The quick bolt of claim 4, wherein the positioning pin extends into the positioning hole and the upper end of the positioning rod extends into the inner hexagonal groove when the rotating disc rotates to the first position, and the positioning pin is disengaged from the positioning hole and the lower end of the positioning rod abuts against the bolt head when the rotating disc rotates to the second position.

6. The quick bolt according to claim 1, wherein a vertical sliding groove is axially formed in the positioning sliding sleeve, and a limiting sliding pin extending into the vertical sliding groove is fixedly arranged on the outer side of the shaft rod.

7. The quick bolt of claim 1, wherein the bolt head has a rotation slot therein coaxial with the shaft, and the rotation disc is rotatably connected in the rotation slot.