Flat-mounted inner support sleeve for section bar
Technical Field
The invention relates to the technical field of support sleeves, in particular to the technical field of support sleeves for thin-wall profiles.
Background
Along with the development trend of automobile light weight, the application of thin-wall profiles with closed cross sections or non-closed cross sections in the manufacturing industries of automobiles and the like is continuously increased, the thin-wall profiles are mainly used for fixedly mounting automobile parts, and the existing common fixed mounting modes mainly comprise two types: firstly, a through hole is formed in the thin-wall section, when a part is installed, a bolt penetrates through the part to be installed and the through hole of the thin-wall section, and is screwed by using a nut, so that the part to be installed is fixed on the thin-wall section. However, the thin-wall section is easy to extrude though the connecting strength is higher, so that the thin-wall section is deformed, and in order to ensure the structural strength of the thin-wall section, the reinforcing ribs are usually arranged in the thin-wall section, however, the consumption of raw materials is increased, and the manufacturing cost is greatly increased. Secondly, welding nuts on the thin-wall section bar, and fixing and screwing parts required to be fixed on the thin-wall section bar on the nuts through bolts. However, the connection strength is poor in this way, and the nut is easy to fall off the thin-wall section bar after long-term use.
Disclosure of Invention
The invention aims to solve the defects, and provides the flat-type internal support sleeve for the profile, which has the advantages of simple structure, firm locking, effective prevention of loosening, good internal support effect on the thin-wall profile and effective reduction of manufacturing cost.
The technical solution adopted by the invention for solving the technical problems is as follows:
the utility model provides a flat-mounted type internal support sleeve for section bar, it comprises barrel and pressure head, the barrel is cylindric wholly, is provided with downwardly extending's spacing boss in the bottom of barrel, has seted up annular locking groove on the lateral wall of this spacing boss, has seted up the centre bore in this barrel, the upper portion setting of the spacing boss of barrel is embedded portion the centre bore department on barrel upper portion has seted up annular groove, set up the centre bore corresponding with barrel centre bore in the pressure head, set up interlocking annular on the lateral wall of pressure head, the pressure head is through its interlocking annular card place in the annular groove on barrel upper portion.
An internal thread is arranged on the inner side wall of the central hole of the cylinder body.
The outer side wall of the embedded part is provided with knurling.
The lower part of the interlocking ring groove on the pressure head is arranged in a cone shape.
The central hole is a through hole.
The upper part of the interlocking ring groove on the pressure head is arranged in a cone shape.
The beneficial effects achieved by adopting the technical proposal of the invention are as follows: the side wall of the cylinder annular groove is extruded and expanded through the pressure head, so that the top of the cylinder is abutted against the bottom surface of the thin-wall section bar at the first through hole, a good limiting effect is achieved, and the phenomenon that the cylinder is separated from the thin-wall section bar is effectively avoided; the embedded part of the cylinder body is embedded into the thin-wall section bar, and meanwhile, the thin-wall section bar is deformed and embedded into the annular locking groove, so that the section bar supporting sleeve is firmly locked on the thin-wall section bar, a good locking effect is achieved, the section bar supporting sleeve can be effectively prevented from loosening, knurling is arranged on the outer side wall of the embedded part, a good anti-rotation effect is achieved, and locking strength is further improved. The two ends of the cylinder body are respectively abutted against the inner surface of the thin-wall section bar, so that a good internal supporting effect is achieved on the thin-wall section bar, the structural strength and deformation resistance of the thin-wall section bar are effectively improved, reinforcing ribs are not required to be arranged in the thin-wall section bar, and the manufacturing cost is remarkably reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic structural view of a cylinder;
FIG. 3 is a schematic cross-sectional view of FIG. 2;
FIG. 4 is a schematic view of the structure of a ram;
FIG. 5 is a schematic cross-sectional view of FIG. 4;
fig. 6 and 7 are schematic views of the installation of the present invention.
Detailed Description
The profile is shown in fig. 1, and is composed of a barrel 1 and a pressure head 2, wherein the barrel 1 is integrally cylindrical, a limiting boss 3 extending downwards is arranged at the bottom of the barrel 1, a central hole 4 is formed in the barrel 1, and the central hole 4 can be a through hole or a blind hole. An internal thread 5 is arranged on the inner side wall of the central hole 4 of the cylinder body 1, an annular locking groove 6 is formed in the outer side wall of the limiting boss 3, an embedded part 7 is arranged on the upper portion of the limiting boss 3 of the cylinder body 1, knurling 8 is arranged on the outer side wall of the embedded part 7 so as to play a role in preventing rotation, and an annular groove 9 is formed in the central hole 4 of the upper portion of the cylinder body 1. As shown in fig. 4 and 5, a central hole 10 corresponding to the central hole 4 of the cylinder 1 is formed in the pressure head 2, an interlocking ring groove 11 is formed in the outer side wall of the pressure head 2, the lower portion of the interlocking ring groove 11 on the pressure head 2 is tapered, the upper portion of the interlocking ring groove 11 on the pressure head 2 can also be tapered, and the pressure head 2 is clamped in the annular groove 9 on the upper portion of the cylinder 1 through the interlocking ring groove 11.
As shown in fig. 6, when the profile supporting sleeve is installed, a first through hole 13 and a second through hole 14 are respectively formed in a thin-wall profile 12, then the cylinder 1 is clamped into the thin-wall profile 12 from the first through hole 13, the limiting boss 3 is clamped into the second through hole 14, then the thin-wall profile 12 is arranged on a base 15, and the pressure head 2 is clamped at the annular groove 9 at the top of the cylinder 1. As shown in fig. 7, the pressing plate 16 is used for pressing the pressing head 2, so that the pressing head 2 is clamped into the annular groove 9 of the cylinder body 1, the interlocking annular groove 11 is used for interlocking with the cylinder body 1, and meanwhile, the pressing head 2 is used for extruding and expanding the side wall 17 of the annular groove 9, so that the top of the cylinder body 1 is abutted against the bottom surface of the thin-wall section bar 12 at the first through hole 13. After the pressure head 2 is contacted with the bottom of the annular groove 9, the cylinder 1 is continuously punched downwards, so that the embedded part 7 of the cylinder 1 is embedded into the thin-wall section bar 12 at the second through hole 14, and simultaneously the thin-wall section bar 12 at the second through hole 14 is deformed and embedded into the annular locking groove 6.