CN108644221B

CN108644221B - Anti-drop screw

Info

Publication number: CN108644221B
Application number: CN201810430598.6A
Authority: CN
Inventors: 姜苏; 姜平; 陈可
Original assignee: Dongguan Huajin Gifts Co ltd
Current assignee: Dongguan Huajin Gifts Co ltd
Priority date: 2018-05-08
Filing date: 2018-05-08
Publication date: 2020-10-27
Anticipated expiration: 2038-05-08
Also published as: CN108644221A

Abstract

The invention provides an anti-falling screw which comprises a screw assembly and an anti-falling assembly, wherein the screw assembly comprises a screw and a screw cap; the screw cap is provided with a screw hole penetrating through the upper end surface and the lower end surface of the screw cap, the tip end of the screw penetrates through the screw hole and extends out of the screw cap, and the flat end of the screw is clamped in the screw hole; the anti-falling component is provided with a plug connector, an elastic piece and a pressing piece; the plug connector is provided with a through inner cavity hole, one end of the plug connector is a plug end, the plug end is inserted into the nail hole, and the plug end is provided with a hole; the elastic piece is arranged in an inner cavity hole of the plug connector and can penetrate through the hole to be clamped with the nail hole; the pressing piece is arranged on the plug connector and pushes the elastic piece to lift in the inner cavity hole of the plug connector, so that the elastic piece is connected with the nail hole in a clamped mode or falls off, and the anti-falling assembly is connected with or falls off from the screw assembly.

Description

Anti-drop screw

Technical Field

The invention relates to the technical field of screws, in particular to an anti-falling screw.

Background

Screws are used for fixing and connecting objects and are widely used in various mechanical devices. A conventional screw structure includes a shank and pointed and flat ends at opposite ends of the shank. The flat end is typically provided with a straight or cruciform recess to facilitate the mounting and dismounting of the screw by the screwdriver. However, when such screws are installed, the tips of the screws are sharp and often puncture hands after being manually removed. In order to solve the technical problem, people add magnetism on the top material of the screwdriver and take the screw through magnetic force adsorption. Although the problem of taking the screw manually is solved to a certain extent, the screw is easy to fall off the screwdriver, and a new technical problem is caused. Particularly, with the use and popularization of automation equipment, the automatic screw locking machine is gradually used for production, and the automatic screw locking machine takes the screws through a manipulator, so that the screws are easy to fall off. Therefore, the screw needs to be improved to meet the requirement of automatic screw locking.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the anti-falling screw which comprises a screw component and an anti-falling component.

The technical scheme of the invention is as follows: an anti-falling screw comprises a screw assembly and an anti-falling assembly, wherein the screw assembly comprises a screw and a screw cap; the screw cap is provided with a screw hole penetrating through the upper end surface and the lower end surface of the screw cap, the tip end of the screw penetrates through the screw hole and extends out of the screw cap, and the flat end of the screw is clamped in the screw hole; the anti-falling component is provided with a plug connector, an elastic piece and a pressing piece; the plug connector is provided with a through inner cavity hole, one end of the plug connector is a plug end, the plug end is inserted into the nail hole, and the plug end is provided with a hole; the elastic piece is arranged in an inner cavity hole of the plug connector and can penetrate through the hole to be clamped with the nail hole; the pressing piece is arranged on the plug connector and pushes the elastic piece to lift in the inner cavity hole of the plug connector, so that the elastic piece is connected with the nail hole in a clamped mode or falls off, and the anti-falling assembly is connected with or falls off from the screw assembly.

The plug connector is also provided with an installation end which is integrally formed with the plug end; the elastic piece comprises a lifting column, a spring and a plurality of marbles; the lifting column is arranged in an inner cavity hole of the plug connector, the top end of the lifting column is a conical top end, the lower part of the lifting column is a first cylinder, the bottom end of the lifting column is a second cylinder, the second cylinder is connected with the first cylinder through a connecting column, and a clearance groove with a semi-arc-shaped section is dug in the periphery of the connecting column; an upper limit table is arranged at the upper end of the inner cavity of the first cylinder, a lower limit table is arranged at the bottom end of the inner cavity, the spring sleeve is arranged outside the first cylinder and positioned between the first cylinder and the mounting end, the top of the spring is abutted against the conical top end, and the bottom of the spring is abutted against the lower limit table; the marble card is established between the lift post and the hole of plug connector, and the part stretches out the hole, joint the nail hole.

Preferably, the pressing piece comprises a mounting plate and a sliding piece, and the mounting plate is fixedly sleeved at the mounting end; the mounting plate is provided with two sliding pieces in a sliding manner; the conical top end extends out of the inner cavity hole and is positioned between the two sliding parts; the two sliding parts are oppositely pushed, the two sliding parts press the conical top end, so that the lifting column descends, the spring is compressed, the clearance groove descends to the marble position, the marble enters the clearance groove, the clamping connection with the nail hole is disconnected, and the plug connector falls off from the nail hole; and when the sliding piece is loosened, the spring extends to push the lifting column to ascend, the clearance groove ascends along with the lifting column, and the second cylinder extrudes the marble to enable the marble to be outward at the hole.

Preferably, the pressing piece further includes a pressing cap covering the mounting plate and the sliding member, and the pressing cap is disposed to be spaced apart at opposite sides thereof, so that portions of the two sliding members are exposed from the pressing cap.

Preferably, one side of the sliding piece close to the conical top end is provided with a slope.

Preferably, the outside of the plugging end of the plug connector is sleeved with an elastic ring, and a position limiting hole is arranged on the elastic ring corresponding to each hole.

Preferably, the nail hole is provided with an insertion part and a nail part, and the flat end of the screw is clamped on the nail part; an arc-shaped annular groove is formed in the inner wall of the insertion part; the marble part is accommodated in the arc-shaped ring groove and is clamped with the nail hole.

The invention has the beneficial effects that: anti-drop screw, including screw subassembly and anticreep subassembly, prevent through the anticreep subassembly that the screw drops to conveniently take convenient to use.

Description of the drawings:

fig. 1 is a schematic structural view of the anti-drop screw of the present invention.

Fig. 2 is an exploded view of the anti-drop screw shown in fig. 1.

Fig. 3 is a front view of the anti-drop screw according to the present invention.

Fig. 4 is a sectional view of the drop-off preventing screw shown in fig. 3.

Fig. 5 is an assembly structure diagram of the anti-drop screw according to the present invention.

Fig. 6 is a sectional view of the drop-off preventing screw shown in fig. 5.

Detailed Description

In order to make the object, technical solution and technical effect of the present invention more apparent, the present invention will be further described with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, 2, 3, 4, 5 and 6, an anti-drop screw includes a screw assembly 100 including a screw 110 and a nut 120, and an anti-drop assembly 200.

The screw has a shank 111, and a tip 112 and a flat end 113 at both ends of the shank 111. The screw cap 120 has a screw hole 121 penetrating through the upper and lower end surfaces thereof, the tip 112 of the screw 110 passes through the screw hole 121 and extends out of the screw cap 120, and the flat end 113 of the screw 110 is clamped in the screw hole 121.

The anti-separation assembly 200 has a plug 210, an elastic member 220 and a pressing member 230. The plug 210 has a through inner cavity hole 201, one end of which is a plug end 211, the plug end 211 is inserted into the nail hole 121, and the plug end 211 is provided with a plurality of holes 212. The number of the holes 212 is at least 2 or more than 2. The holes 212 are uniformly and symmetrically distributed on the insertion end 211.

The elastic piece 220 is arranged in the inner cavity hole 201 of the plug-in piece 210 and can penetrate through the hole 212 to be clamped with the nail hole 121. The pressing part 230 is arranged on the plug-in part 210, and pushes the elastic part 220 to lift in the inner cavity hole 201 of the plug-in part 210, so that the elastic part 220 is clamped with the nail hole 121 or falls off, and the anti-falling assembly 200 is connected with or falls off from the screw assembly 100.

In the preferred embodiment of the present invention, the plug 210 further has a mounting end 213 integrally formed with the plug end 211. As shown, the insertion end 211 and the mounting end 213 are both cylindrical, and the outer diameter of the mounting end 213 is larger than the outer diameter of the insertion end 211. The upper part of the inner cavity of the mounting end 213 is provided with an upper limit block 2121, and the lower part is provided with a lower limit block 2122. Preferably, the external portion of the inserting end 211 is sleeved with an elastic ring 214, and the elastic ring 214 is provided with an S-shaped notch 215, so that the elastic ring 214 is easily installed on the inserting end 211 or detached from the inserting end 211. It should be understood that the notch 215 may be provided in other shapes. A limiting hole 215 is formed on the elastic ring 214 at a position corresponding to each hole 212.

The elastic member 220 includes a lifting column 221, a spring 222, and a plurality of marbles 223. The lift post 221 sets up in the inner chamber hole 201 of plug connector 211, and its top sets up to conical top 2211, conical top 2211 lower part is first cylinder 2212, the bottom of lift post 221 is second cylinder 2214, second cylinder 2214 with first cylinder 2212 is connected through a spliced pole 2213, and this spliced pole 2213 periphery is dug and is equipped with the section and be semi-circular arc's clearance groove 2215 of keeping away.

The spring 222 is disposed around the first cylinder 2212 and between the first cylinder 2212 and the mounting end 213, the top of the spring 222 abuts against the conical top end 2211, and the bottom of the spring 222 abuts against the lower stop 2122.

The marble 223 is clamped between the lifting column 221 and the hole 212 of the plug connector 211, and a part of the marble 223 extends out of the hole 212 to be clamped with the nail hole 121.

The pressing member 230 comprises a mounting plate 231 and a sliding member 232, wherein the mounting plate 231 is fixedly sleeved at the mounting end 213; the mounting plate 231 is provided with two sliding pieces 232 in a sliding manner; the conical top end 2211 extends out of the bore 201 and is positioned between the two sliding members 232. Preferably, the side of the slider 232 near the conical top end 2211 is provided as a ramp 2321.

Preferably, the pressing member 230 further includes a pressing cap 233, the pressing cap 233 covers the mounting plate 231 and the sliding member 232, and the pressing cap 233 is disposed at two opposite sides of the mounting plate and is set as a clearance 2331, so that portions of the sliding members 232 are exposed from the pressing cap 233.

Preferably, the nail hole 121 has an insertion portion 1211 and a nail portion 1212, and the flat end 112 of the screw 110 is clamped in the nail portion 1212; an arc-shaped annular groove 1213 is formed in the inner wall of the insertion part 1211; the ball 223 is partially received in the arcuate groove 1213 to engage the nail hole.

Plug connector 210 is followed when nail hole 121 drops, promote two relatively slider 232, two slider 232 extrudees conical top 2211 makes lift post 221 descends, spring 222 one end butt conical top 2211, other end butt lower spacing platform 2122, thereby the compression, keep away empty slot 2215 descends to marble 223 position, marble 223 gets into keep away empty slot 2215, thereby the disconnection with the joint in nail hole, thereby make plug connector 210 follows nail hole 121 drops. When the plug 210 is inserted into the nail hole 121, the slider 232 is released, the spring 222 recovers from the compressed state, and pushes the conical top end 2211 to ascend, the lifting column 221 ascends, the clearance groove 2215 ascends along with the ascending, and the second cylinder 2214 ascends to the position of the marble 223 to press the marble 223, so that the marble 223 is pressed to pass through the hole 212 and the limiting hole 215, and is partially accommodated in the arc-shaped annular groove 1213, thereby realizing the anti-release connection of the screw assembly 100 and the anti-release assembly 200.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the present invention pertains, the architecture form can be flexible and varied without departing from the concept of the present invention, and a series of products can be derived. But rather a number of simple derivations or substitutions are made which are to be considered as falling within the scope of the invention as defined by the appended claims.

Claims

1. The utility model provides an anti-drop screw, includes screw assembly and anti-drop subassembly, its characterized in that: the screw assembly comprises a screw and a nut; the screw cap is provided with a screw hole penetrating through the upper end surface and the lower end surface of the screw cap, the tip end of the screw penetrates through the screw hole and extends out of the screw cap, and the flat end of the screw is clamped in the screw hole; the anti-falling component is provided with a plug connector, an elastic piece and a pressing piece; the plug connector is provided with a through inner cavity hole, one end of the plug connector is a plug end, the plug end is inserted into the nail hole, and the plug end is provided with a hole; an elastic ring is sleeved outside the insertion end, and a limit hole is formed in the elastic ring corresponding to each hole; the elastic piece is arranged in an inner cavity hole of the plug connector and can penetrate through the hole to be clamped with the nail hole; the pressing piece is arranged on the plug connector and pushes the elastic piece to lift in the inner cavity hole of the plug connector, so that the elastic piece is connected with the nail hole in a clamped mode or falls off, and the anti-falling assembly is connected with or falls off from the screw assembly.

2. The fall-off preventive screw according to claim 1, wherein: the plug connector is also provided with an installation end which is integrally formed with the plug end; the elastic piece comprises a lifting column, a spring and a plurality of marbles; the lifting column is arranged in an inner cavity hole of the plug connector, the top end of the lifting column is a conical top end, the lower part of the lifting column is a first cylinder, the bottom end of the lifting column is a second cylinder, the second cylinder is connected with the first cylinder through a connecting column, and a clearance groove with a semi-arc-shaped section is dug in the periphery of the connecting column; the bottom end of the first cylinder is provided with a limiting table, the spring is sleeved outside the first cylinder and is positioned between the first cylinder and the mounting end, the top of the spring is abutted against the conical top end, and the bottom of the spring is abutted against the limiting table; the marble card is established between the lift post and the hole of plug connector, and the part stretches out the hole, joint the nail hole.

3. The drop-preventing screw according to claim 2, wherein: the pressing piece comprises a mounting plate and a sliding piece, and the mounting plate is fixedly sleeved at the mounting end; the mounting plate is provided with two sliding pieces in a sliding manner; the conical top end extends out of the inner cavity hole and is positioned between the two sliding parts; the two sliding parts are oppositely pushed, the two sliding parts press the conical top end, so that the lifting column descends, the spring is compressed, the clearance groove descends to the marble position, the marble enters the clearance groove, the clamping connection with the nail hole is disconnected, and the plug connector falls off from the nail hole; when the sliding piece is loosened, the spring extends to push the lifting column to ascend, the clearance groove ascends along with the lifting column, and the second cylinder extrudes the marble to enable the marble to be outward at the hole;

the screw hole is provided with an inserting part and a screw part, and the flat end of the screw is clamped at the screw part; an arc-shaped annular groove is formed in the inner wall of the insertion part; the marble part is accommodated in the arc-shaped ring groove and is clamped with the nail hole.