CN213575090U

CN213575090U - Anti-drop allen key screw fastener

Info

Publication number: CN213575090U
Application number: CN202022579946.1U
Authority: CN
Inventors: 刘楠
Original assignee: Wicken Tianjin Machinery Parts Co ltd
Current assignee: Wicken Tianjin Machinery Parts Co ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-06-29
Anticipated expiration: 2030-11-10

Abstract

The utility model discloses an anti-drop allen key screw fastener, concrete fastener technical field, including first interior hexagonal head and first threaded rod, first recess has been seted up to the inside bottom of first interior hexagonal head, first recess bottom is equipped with the second recess, second recess bottom is equipped with the third recess, first recess is inside to be equipped with the interior hexagonal head of second, the fixed second threaded rod that is equipped with in second interior hexagonal head bottom, second threaded rod outer pot head is equipped with the sleeve, the sleeve bottom mounting is equipped with the kicking block, the inside supplementary kicking block that is equipped with of third recess, supplementary kicking block outside is fixed and is equipped with the plug. The utility model discloses a kicking block struts two supplementary kicking blocks and stretches out to the both sides removal drive plug from the jack and insert and fasten the object in, and the plug stretches out to insert and makes in the fastening object in using for a long time, and first threaded rod is spacing not hard up the coming off by the plug, and fastening easy operation and security are high, have the anti-drop function.

Description

Anti-drop allen key screw fastener

Technical Field

The embodiment of the utility model provides a relate to fastener technical field, concretely relates to anti-drop hexagon socket head cap screw fastener.

Background

The fastener is a mechanical part which is used for fastening connection and has extremely wide application. The fastener is widely used in the industries including energy, electronics, electrical appliances, machinery, chemical industry, metallurgy, molds, hydraulic pressure and the like, and various fasteners can be seen on various machines, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemical industry, instruments, supplies and the like, and are the most widely applied mechanical basic parts. It features various varieties and specifications, different functions and usages, and very high standardization, serialization and universalization degrees. Thus, one type of fastener that has a national standard is also referred to as a standard fastener, or simply a standard.

The prior art has the following defects: after the fastener is installed, the fastener is easy to loosen after long-time use, so that the fastener can be seriously and directly fallen off, the use is inconvenient, the danger is high, and the falling prevention function is not realized.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides an anti-drop allen key screw fastener to because the fastener is after installing well, owing to long-time the use easily produces not hard up, serious can lead to the fastener directly to drop and the use that leads to is neither convenient, dangerous also higher, does not have the problem of prevention function of droing among the solution prior art.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: an anti-drop inner hexagonal screw fastener comprises a first inner hexagonal head and a first threaded rod, wherein the first inner hexagonal head is fixedly arranged at the top end of the first threaded rod, a first groove is formed in the bottom end inside the first inner hexagonal head, a second groove is formed in the bottom of the first groove, a third groove is formed in the bottom of the second groove, the second groove and the third groove are both formed inside the first threaded rod, a second inner hexagonal head is arranged inside the first groove, a second threaded rod is fixedly arranged at the bottom of the second inner hexagonal head, the second threaded rod is arranged inside the second groove, the outer end of the second threaded rod is movably connected with the inner wall of the second groove through a bearing, a sleeve is sleeved at the outer end of the second threaded rod, the sleeve and the second threaded rod are connected through threads, a top block is fixedly arranged at the bottom end of the sleeve, two auxiliary top blocks are arranged inside the third groove, two supplementary kicking block all establishes in the kicking block bottom, the fixed plug that is equipped with in the supplementary kicking block outside, the jack has all been seted up to third recess both sides, the plug is established inside the third recess and is extended into inside the jack.

Furthermore, the tops of the inner sides of the two auxiliary ejector blocks are all set to be slopes, and the slopes are symmetrically distributed on the central axis of the ejector block.

Further, two the supplementary kicking block outside all is fixed and is equipped with the spring, spring one end and third recess inside wall fixed connection, the spring is established at the plug top.

Further, a fourth groove is formed in the first threaded rod, the fourth groove is formed in the bottom of the third groove, and the inner portion of the fourth groove is matched with the bottom end of the ejector block.

Further, the sleeve outer end is fixed and is equipped with two limiting slide blocks, two limiting slide blocks are with second threaded rod axis symmetric distribution.

Furthermore, two limiting sliding grooves are formed in the first threaded rod, the two limiting sliding grooves are formed in two sides of the second groove respectively and are symmetrically distributed on the second threaded rod through the central axis of the second threaded rod, and the limiting sliding blocks are arranged inside the limiting sliding grooves.

Further, the top block bottom is set to the tip, the sleeve outer end contacts with the second recess inside wall.

Further, the outer side and the bottom of the second hexagon socket head are respectively in contact with the inner side wall of the first groove and the inner bottom end.

The embodiment of the utility model provides a have following advantage:

the utility model discloses an instrument is with first interior hexagonal head and first screw rod fastening to the object, then insert in the second interior hexagonal head and twist with the interior hexagonal of trumpet size and move, thereby it is rotatory to make the second threaded rod, thereby the rotatory sleeve of drive of second threaded rod moves down and drives the kicking block downstream and slowly strut two supplementary kicking blocks and remove to both sides, two supplementary kicking blocks drive the plug to remove to both sides after being strutted, the plug slowly stretches out from the jack and inserts and is fastened in the object, compared with the prior art, the plug stretches out and makes in using for a long time in inserting the fastened object, first threaded rod is spacing by the plug and can not become flexible and drop, fastening easy operation and security are high, have the anti-drop function.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a front sectional view provided by the present invention;

FIG. 2 is a front view of a sectional view of the present invention;

fig. 3 is a perspective view provided by the present invention;

FIG. 4 is an enlarged view of the portion A in FIG. 1 according to the present invention;

FIG. 5 is an enlarged view of the portion B in FIG. 1 according to the present invention;

fig. 6 is a perspective view of the top block provided by the present invention;

fig. 7 is a perspective view of the auxiliary ejector block provided by the present invention;

in the figure: the socket comprises a first hexagon socket head 1, a first threaded rod 2, a first groove 3, a second groove 4, a third groove 5, a jack 6, a second hexagon socket head 7, a second threaded rod 8, a sleeve 9, a top block 10, an auxiliary top block 11, a plug 12, a spring 13, a fourth groove 14, a limiting sliding block 15 and a limiting sliding groove 16.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to the attached drawings 1-7 in the specification, the anti-drop hexagon socket head cap screw fastener of the embodiment comprises a first hexagon socket head 1 and a first threaded rod 2, wherein the first hexagon socket head 1 is fixedly arranged at the top end of the first threaded rod 2, a first groove 3 is formed in the bottom end inside the first hexagon socket head 1, a second groove 4 is formed in the bottom of the first groove 3, a third groove 5 is formed in the bottom of the second groove 4, the second groove 4 and the third groove 5 are both arranged inside the first threaded rod 2, a second hexagon socket head 7 is arranged inside the first groove 3, a second threaded rod 8 is fixedly arranged at the bottom of the second hexagon socket head 7, the second threaded rod 8 is arranged inside the second groove 4, the outer end of the second threaded rod 8 is movably connected with the inner wall of the second groove 4 through a bearing, the outer end of the second threaded rod 8 is sleeved with a sleeve 9, the sleeve 9 is connected with the second threaded rod 8 through a thread, 9 bottom mounting of sleeve is equipped with kicking block 10, the inside supplementary kicking block 11 of two, two of being equipped with of third recess 5 supplementary kicking block 11 all establishes in kicking block 10 bottom, the fixed plug 12 that is equipped with in supplementary kicking block 11 outside, jack 6 has all been seted up to third recess 5 both sides, plug 12 is established inside third recess 5 and is extended into jack 6 inside.

Furthermore, the tops of the inner sides of the two auxiliary ejector blocks 11 are both provided with slopes, the two slopes are symmetrically distributed along the axis of the ejector block 10, and the slopes facilitate the downward movement of the ejector block 10 and the downward insertion of the ejector block between the two auxiliary ejector blocks to prop the ejector block open.

Further, two the supplementary kicking block 11 outside all is fixed and is equipped with spring 13, spring 13 one end and third recess 5 inside wall fixed connection, spring 13 establishes at plug 12 top, and spring 13 can be when first threaded rod 2 does not use or be promoting two supplementary kicking blocks 11 in the fastening process and paste together to make plug 12 can not move out jack 6 and influence the fastening process.

Further, a fourth groove 14 is formed in the first threaded rod 2, the fourth groove 14 is formed in the bottom of the third groove 5, the inner portion of the fourth groove 14 is matched with the bottom end of the top block 10, and the fourth groove 14 can be inserted into the top block 10 when the top block 10 moves to the bottommost portion.

Furthermore, two limiting slide blocks 15 are fixedly arranged at the outer end of the sleeve 9, the two limiting slide blocks 15 are symmetrically distributed along the axis of the second threaded rod 8, and the limiting slide blocks 15 have a limiting effect on the sleeve 9 and prevent the sleeve from rotating along with the second threaded rod 8.

Furthermore, two limiting sliding grooves 16 are formed in the first threaded rod 2, the two limiting sliding grooves 16 are respectively formed in two sides of the second groove 4, the two limiting sliding grooves 16 are symmetrically distributed along the axis of the second threaded rod 8, the limiting sliding blocks 15 are arranged in the limiting sliding grooves 16, the limiting sliding grooves 16 have a limiting effect, and the sleeve 9 is limited by the limiting sliding blocks 15 and the limiting sliding grooves 16 to move so that the sleeve cannot rotate along with the second threaded rod 8.

Further, the bottom end of the ejector block 10 is set to be a pointed end, the outer end of the sleeve 9 is in contact with the inner side wall of the second groove 4, the pointed end at the bottom end of the ejector block 10 is conveniently inserted into the middle of the two auxiliary ejector blocks 11 in the downward moving process, and the auxiliary ejector blocks are more conveniently separated.

Further, the outer side and the bottom of the second hexagon socket head 7 are respectively contacted with the inner side wall and the inner bottom end of the first groove 3, the second hexagon socket head 7 is arranged in the first groove 3 and does not obstruct screwing of the first hexagon socket head, and the second hexagon socket head 7 can also be screwed and rotated.

The implementation scenario is specifically as follows: when the tool is used, the hexagon socket is inserted into the first hexagon socket head 1 to screw the first threaded rod 2 into the fixed hole, when the first threaded rod 2 is completely screwed in to enable the first threaded rod 2 to be incapable of rotating, the tool is replaced by using a small-size hexagon socket to be inserted into the second hexagon socket head 7 and screw the second hexagon socket head 7, the second hexagon socket head 7 rotates to drive the second threaded rod 8 to rotate, the second threaded rod 8 rotates to drive the sleeve 9 to rotate and limit the sleeve 9, so that the sleeve 9 moves downwards, the sleeve 9 moves downwards to drive the ejector blocks 10 to move downwards and slowly insert the ejector blocks 10 into slopes of the two auxiliary ejector blocks 11, the ejector blocks 10 are inserted between the two auxiliary ejector blocks 11 in the downward moving process to enable the two auxiliary ejector blocks 11 to be propped open by the ejector blocks 10 to move towards two sides, and before the auxiliary ejector blocks 11 are not propped, the elastic force of the spring 13 always pushes the auxiliary ejector blocks 11 to enable the two auxiliary ejector blocks 11 to be clung together, thereby make two plugs 12 can not remove the fastening that stretches out jack 6 influence first threaded rod 2, supplementary kicking block 11 drives plug 12 and removes to both sides after two supplementary kicking blocks 11 are strutted, plug 12 slowly stretches out and inserts in the fastened object from jack 6, kicking block 10 finally moves downwards and inserts in fourth recess 14, plug 12 stretches out and inserts and makes in the fastened object making in long-term the use, first threaded rod 2 is spacing not become flexible and drops by plug 12, fastening easy operation and security are high, has the anti-drop function, this embodiment has specifically solved among the prior art fastener after the installation, because long-time use easily produces not hard up, serious can lead to the fastener directly to drop, it is neither convenient to use, danger is also higher, do not have the problem of prevention drop function.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides an anti-drop allen key screw fastener, includes first interior hexagonal head (1) and first threaded rod (2), fixed the establishing on first threaded rod (2) top of first interior hexagonal head (1), its characterized in that: the inner bottom end of the first inner hexagonal head (1) is provided with a first groove (3), the bottom of the first groove (3) is provided with a second groove (4), the bottom of the second groove (4) is provided with a third groove (5), the second groove (4) and the third groove (5) are both arranged inside the first threaded rod (2), the first groove (3) is internally provided with a second inner hexagonal head (7), the bottom of the second inner hexagonal head (7) is fixedly provided with a second threaded rod (8), the second threaded rod (8) is arranged inside the second groove (4), the outer end of the second threaded rod (8) is movably connected with the inner wall of the second groove (4) through a bearing, the outer end of the second threaded rod (8) is sleeved with a sleeve (9), the sleeve (9) is connected with the second threaded rod (8) through a thread, the bottom end of the sleeve (9) is fixedly provided with a top block (10), third recess (5) inside is equipped with two supplementary kicking blocks (11), two supplementary kicking blocks (11) are all established in kicking block (10) bottom, supplementary kicking block (11) outside is fixed and is equipped with plug (12), jack (6) have all been seted up to third recess (5) both sides, plug (12) are established inside third recess (5) and are extended into inside jack (6).

2. The anti-drop allen screw fastener according to claim 1, characterized in that: the tops of the inner sides of the two auxiliary ejector blocks (11) are both set as slopes, and the two slopes are symmetrically distributed along the central axis of the ejector block (10).

3. The anti-drop allen screw fastener according to claim 1, characterized in that: two supplementary kicking block (11) outside all is fixed and is equipped with spring (13), spring (13) one end and third recess (5) inside wall fixed connection, establish at plug (12) top spring (13).

4. The anti-drop allen screw fastener according to claim 1, characterized in that: a fourth groove (14) is formed in the first threaded rod (2), the fourth groove (14) is formed in the bottom of the third groove (5), and the inside of the fourth groove (14) is matched with the bottom end of the ejector block (10).

5. The anti-drop allen screw fastener according to claim 1, characterized in that: two limiting slide blocks (15) are fixedly arranged at the outer end of the sleeve (9), and the two limiting slide blocks (15) are symmetrically distributed along the axis of the second threaded rod (8).

6. The anti-drop allen screw fastener according to claim 5, characterized in that: two limiting sliding grooves (16) are formed in the first threaded rod (2), the two limiting sliding grooves (16) are formed in two sides of the second groove (4) respectively, the two limiting sliding grooves (16) are symmetrically distributed in the axis of the second threaded rod (8), and the limiting sliding blocks (15) are arranged in the limiting sliding grooves (16).

7. The anti-drop allen screw fastener according to claim 1, characterized in that: the bottom end of the ejector block (10) is set to be a pointed end, and the outer end of the sleeve (9) is in contact with the inner side wall of the second groove (4).

8. The anti-drop allen screw fastener according to claim 1, characterized in that: the outer side and the bottom of the second hexagon socket head (7) are respectively contacted with the inner side wall and the inner bottom end of the first groove (3).