CN220646415U - Expansion screw with barbs - Google Patents
Expansion screw with barbs Download PDFInfo
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- CN220646415U CN220646415U CN202322431677.8U CN202322431677U CN220646415U CN 220646415 U CN220646415 U CN 220646415U CN 202322431677 U CN202322431677 U CN 202322431677U CN 220646415 U CN220646415 U CN 220646415U
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- sleeve
- line segment
- screw rod
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- 125000006850 spacer group Chemical group 0.000 claims 2
- 238000009434 installation Methods 0.000 abstract description 18
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of expansion screws, and provides an expansion screw with barbs, which comprises a screw rod, wherein one end of the screw rod is provided with a first clamping protrusion; the rod sleeve is sleeved on the screw rod, one end of the rod sleeve is provided with a plurality of avoidance gaps, and the rod sleeve is also provided with a plurality of second clamping bulges; the nut is arranged at the other end of the screw rod in a threaded manner. Through above-mentioned technical scheme, the hidden danger that the inflation screw exists the installation unstable among the prior art has been solved, life is short problem.
Description
Technical Field
The utility model relates to the technical field of expansion screws, in particular to an expansion screw with barbs.
Background
The expansion screw is generally a metal expansion screw, and the expansion screw is fixed by using wedge slope to promote expansion to generate friction grip so as to achieve the fixing effect. The expansion screw is mainly used for fixing between the wall body and the component, one end of the expansion screw is placed into a hole of the wall body, and the diameter of an expansion area in the expansion screw is enlarged by rotating the nut, so that the expansion screw is prevented from being separated from the hole, and the screw rod rotates in a rod sleeve to skid in the installation process, so that the fastening effect cannot be achieved. The expansion screw in the prior art has the hidden trouble of unstable installation and short service life.
Disclosure of Invention
The utility model provides an expansion screw with barbs, which solves the problems of unstable installation hidden trouble and short service life of the expansion screw in the related technology.
The technical scheme of the utility model is as follows:
an expansion screw with barbs, comprising:
one end of the screw rod is provided with a first clamping protrusion;
the rod sleeve is sleeved on the screw rod, one end of the rod sleeve is provided with a plurality of avoidance gaps, and the rod sleeve is also provided with a plurality of second clamping protrusions;
the nut is arranged at the other end of the screw rod in a threaded manner.
As a further technical scheme, the second clamping protrusion is conical.
As a further technical scheme, the rod sleeve is provided with a plurality of avoidance through holes, and the avoidance through holes are communicated with the avoidance gaps.
As a further technical scheme, the diameter of the inner cavity of the rod sleeve is larger than that of the screw rod.
As a further technical scheme, the rod sleeve is provided with a plurality of anti-slip protrusions, and the anti-slip protrusions are arranged on the rod sleeve at intervals along the circumference;
the anti-slip protrusions are identical in structure, and each anti-slip protrusion is provided with a first inclined line segment, a second inclined line segment, a third inclined line segment and a fourth inclined line segment;
the first oblique line section and the second oblique line section are opposite in inclination direction and same in inclination angle;
the third oblique line section and the fourth oblique line section are opposite in inclination direction and same in inclination angle;
the first diagonal segment and the third diagonal segment have the same inclination direction, and the inclination angle of the first diagonal segment is larger than that of the third diagonal segment.
As a further technical solution, the rod sleeve has a plurality of grooves, and the first clamping protrusion includes:
the boss is arranged on the screw rod;
the third clamping bulges are provided with a plurality of arc-shaped guide surfaces, the third clamping bulges are arranged on the boss along the circumference at intervals and are used for being clamped into the grooves.
As a further technical scheme, the screw rod is further provided with a gasket and a backing ring which are sequentially sleeved on the screw rod, and the gasket and the backing ring are positioned between the nut and the rod sleeve.
The working principle and the beneficial effects of the utility model are as follows:
in order to solve the problems of unstable installation and short service life of the expansion screw in the related art, the utility model designs a second clamping protrusion, the second clamping protrusion can strengthen the abutting connection between the expansion screw and the installation body, a proper rod sleeve is sleeved on the screw rod, the rod sleeve and the screw rod are in optical sliding sleeve arrangement, a gasket is sleeved on the screw rod, a nut is screwed on the screw rod, the nut is taken off in the use process of the expansion screw, an installation hole is drilled on the installation body, the screw rod and the rod sleeve are placed in the installation hole, the nut is screwed on again, and the screw rod extrudes and deforms the rod sleeve to form expansion and extrusion of the installation body in the continuous screwing process of the nut, so that the installation is strengthened. The second joint in this scheme is protruding, sets up on the pole cover, makes difficult not hard up between pole cover and the installation body, has also prolonged the life of inflation screw when difficult not hard up.
Drawings
The utility model will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of a structure having a third engaging protrusion;
FIG. 3 is a schematic view of a rod sleeve structure;
FIG. 4 is an enlarged schematic view of FIG. 2 at A;
in the figure: 1. the novel anti-skid device comprises a screw rod, 2, a first clamping protrusion, 3, a rod sleeve, 4, an avoidance gap, 5, a nut, 6, a gasket, 7, a backing ring, 8, a second clamping protrusion, 9, an avoidance through hole, 10, a boss, 11, a third clamping protrusion, 12, an anti-skid protrusion, 13, a groove, 14, a first oblique line segment, 15, a second oblique line segment, 16, a third oblique line segment, 17 and a fourth oblique line segment.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-4, the present embodiment proposes
An expansion screw with barbs, comprising:
one end of the screw rod 1 is provided with a first clamping protrusion 2;
the rod sleeve 3 is sleeved on the screw rod 1, one end of the rod sleeve 3 is provided with a plurality of avoidance gaps 4, and the rod sleeve 3 is also provided with a plurality of second clamping bulges 8;
and the nut 5 is arranged at the other end of the screw rod 1 in a threaded manner.
In this embodiment, in order to solve the hidden danger that the inflation screw exists the installation unstable among the relevant technique, life is short, this scheme has designed a second joint arch 8, the butt between inflation screw and the installation body can be consolidated to second joint arch 8, first with the pole cover 3 cover that will fit on lead screw 1, the smooth sliding sleeve between pole cover 3 and the lead screw 1 is established, establish gasket 6 again on lead screw 1 cover, at last screw up nut 5, the inflation screw is in the use, beat the mounting hole on the installation body, place lead screw 1 and pole cover 3 into the mounting hole in, screw up nut 5, the in-process that nut 5 was constantly screwed up, lead screw 1 extrudees the pole cover 3 and warp, form the inflation, extrude the installation body, thereby consolidate the installation. The second clamping bulge 8 in this scheme sets up on the pole cover 3, makes difficult not hard up between pole cover 3 and the installation body, has also prolonged the life of inflation screw when difficult not hard up.
Further, the second engaging protrusion 8 is tapered.
In this embodiment, in order to solve the problem of loosening the expansion screw in the related art, the second clamping protrusion 8 is set to be an inclined arc surface which is smaller and smaller from the contact surface between the second clamping protrusion 8 and the rod sleeve 3, and the conical design can increase the adhesive force with the mounting body after the expansion screw expands, so as to increase the bearing force of the expansion screw.
Further, the rod sleeve 3 is provided with a plurality of avoidance through holes 9, and the avoidance through holes 9 are communicated with the avoidance gap 4.
In this embodiment, in order to solve the insufficient problem of inflation screw, this scheme has designed a plurality of on the pole cover 3 and has dodged through-hole 9, and pole cover 3 dodges clearance 4 and expand when receiving the extrusion of first joint arch 2, and pole cover 3 has the one end perk of dodging clearance 4, enlarges the tip diameter, has designed the through-hole after, and pole cover 3 is buckled in through-hole department, realizes the inflation of pole cover 3 more easily.
Further, the diameter of the inner cavity of the rod sleeve 3 is larger than that of the screw rod 1.
In this embodiment, in order to solve the problem that the rod sleeve 3 expands when the screw rod 1 is screwed, the diameter of the rod sleeve 3 is larger than that of the screw rod 1, the rod sleeve 3 is sleeved between the screw rods 1, the screw rod 1 can shake in the rod sleeve 3, and if the diameter of the rod sleeve 3 is the same as that of the screw rod 1, the expansion effect cannot be achieved.
Further, the sleeve 3 is provided with a plurality of anti-slip protrusions 12, and the anti-slip protrusions 12 are circumferentially arranged on the sleeve 3 at intervals;
the plurality of cleats 12 are identical in construction, the cleats 12 having a first diagonal segment 14, a second diagonal segment 15, a third diagonal segment 16, and a fourth diagonal segment 17;
the first oblique line segment 14 and the second oblique line segment 15 are opposite in inclination direction and the same in inclination angle;
the third oblique line segment 16 and the fourth oblique line segment 17 are opposite in inclination direction and the inclination angle is the same;
the first diagonal segment 14 and the third diagonal segment 16 are inclined in the same direction and the angle of inclination of the first diagonal segment 14 is greater than the angle of inclination of the third diagonal segment 16.
In this embodiment, in order to increase the friction between the sleeve 3 and the mounting body, a plurality of cleats 12 are designed, and the cleats 12 are formed by attaching two equal triangles together.
Further, the rod cover 3 has a plurality of grooves 13, and the first clamping protrusion 2 includes:
a boss 10 provided on the screw 1;
the third clamping bulges 11 are provided with a plurality of third clamping bulges 11, the plurality of third clamping bulges 11 are arranged on the boss 10 at intervals along the circumference, the third clamping bulges 11 are used for being clamped into the grooves 13, and the third clamping bulges 11 are provided with arc-shaped guide surfaces.
In this embodiment, in order to solve the problem of the link rotation of the screw rod 1, this scheme has designed the protruding 11 of third joint, and the protruding 11 joint of third joint is in recess 13, put into the mounting hole with the pole cover 3 after, rotates nut 5, because protruding 11 card of third joint is in recess 13, screw rod 1 links together with pole cover 3, and when nut 5 rotated, the 3 butt installation bodies of pole cover provides certain resistance, has prevented nut 5 and screw rod 1 link rotation.
Further, the screw rod assembly further comprises a gasket 6 and a backing ring 7 which are sequentially sleeved on the screw rod 1, and the gasket 6 and the backing ring 7 are positioned between the nut 5 and the rod sleeve 3.
In this embodiment, prevent equipment vibrations in operation from causing the not hard up of lead screw 1, this scheme has designed backing ring 7, and backing ring 7 nut 5 is screwed up the back and is given nut 5 a power, increases the frictional force between nut 5 and lead screw 1, increases a safeguard measure. After the backing ring 7 is screwed down, a continuous elastic force is generated, so that a friction force is continuously kept between the nut 5 and the threaded connection pair of the screw rod 1, a resistance moment is generated, and the nut 5 is prevented from loosening.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (7)
1. An expansion screw with barbs, comprising:
one end of the screw rod (1) is provided with a first clamping protrusion (2);
the screw rod (1) is sleeved with the rod sleeve (3), a plurality of avoidance gaps (4) are formed at one end of the rod sleeve (3), and a plurality of second clamping protrusions (8) are further formed on the rod sleeve (3);
and the nut (5) is arranged at the other end of the screw rod (1) in a threaded manner.
2. A barbed expansion screw according to claim 1, wherein the second snap-fit protrusion (8) is conical.
3. A barbed expansion screw according to claim 1, wherein the rod sleeve (3) has a number of relief through holes (9), the relief through holes (9) being in communication with the relief gap (4).
4. A barbed expansion screw according to claim 1, wherein the diameter of the inner cavity of the sleeve (3) is larger than the diameter of the screw (1).
5. A barbed expansion screw according to claim 1, wherein the sleeve (3) has several anti-slip protrusions (12), several anti-slip protrusions (12) being circumferentially spaced on the sleeve (3);
the anti-skid bulges (12) have the same structure, and the anti-skid bulges (12) are provided with a first inclined line segment (14), a second inclined line segment (15), a third inclined line segment (16) and a fourth inclined line segment (17);
the first oblique line segment (14) and the second oblique line segment (15) are opposite in inclination direction and same in inclination angle;
the third inclined line segment (16) and the fourth inclined line segment (17) are opposite in inclination direction and same in inclination angle;
the first diagonal (14) and the third diagonal (16) have the same inclination and the inclination of the first diagonal (14) is greater than the inclination of the third diagonal (16).
6. A barbed expansion screw according to claim 1, wherein the sleeve (3) has grooves (13), the first snap-on protrusion (2) comprising:
a boss (10) arranged on the screw rod (1);
the third clamping bulges (11) are arranged on the boss (10) at intervals along the circumference, the third clamping bulges (11) are used for being clamped into the grooves (13), and the third clamping bulges (11) are provided with arc-shaped guide surfaces.
7. A barbed expansion screw according to claim 1, further comprising a spacer (6) and a grommet (7) that are sequentially sleeved on the screw (1), the spacer (6) and grommet (7) being located between the nut (5) and the rod sleeve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322431677.8U CN220646415U (en) | 2023-09-07 | 2023-09-07 | Expansion screw with barbs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322431677.8U CN220646415U (en) | 2023-09-07 | 2023-09-07 | Expansion screw with barbs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220646415U true CN220646415U (en) | 2024-03-22 |
Family
ID=90263571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322431677.8U Active CN220646415U (en) | 2023-09-07 | 2023-09-07 | Expansion screw with barbs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220646415U (en) |
-
2023
- 2023-09-07 CN CN202322431677.8U patent/CN220646415U/en active Active
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