CN-224214526-U - Stainless steel expansion screw connection structure

CN224214526UCN 224214526 UCN224214526 UCN 224214526UCN-224214526-U

Abstract

The utility model discloses a stainless steel expansion screw connecting structure, which relates to the technical field of expansion screws and comprises an expansion pipe, wherein the bottom of the expansion pipe is solid, the side wall of the expansion pipe is rotationally connected with a plurality of first elastic sheets, the plurality of first elastic sheets are annularly arranged, the inner side walls of the plurality of first elastic sheets are obliquely arranged, the side wall of the expansion pipe is rotationally connected with a plurality of second elastic sheets, the plurality of second elastic sheets are annularly arranged, and the inner side walls of the plurality of second elastic sheets are obliquely arranged.

Inventors

CHEN RURONG

Assignees

江苏锐螺金属科技有限公司

Dates

Publication Date: 20260508
Application Date: 20250923

Claims (5)

1. The utility model provides a stainless steel inflation screw connection structure, includes expansion pipe (1), its characterized in that, expansion pipe (1) bottom is solid setting, expansion pipe (1) lateral wall rotates and is connected with a plurality of first elastic pieces (2), a plurality of first elastic pieces (2) are annular setting, a plurality of first elastic pieces (2) inside wall all is the slope form setting, expansion pipe (1) lateral wall rotates and is connected with a plurality of second elastic pieces (3), a plurality of second elastic pieces (3) are annular setting, a plurality of second elastic pieces (3) inside wall all is the slope form setting, a plurality of annular aperture in the middle of the first elastic pieces (2) is greater than annular aperture in the middle of a plurality of second elastic pieces (3); The top is equipped with internal thread (10) in expansion pipe (1), expansion pipe (1) internal thread connection has connecting rod (7), connecting rod (7) outer lane is equipped with external screw thread (5), connecting rod (7) are through external screw thread (5) threaded connection in expansion pipe (1), connecting rod (7) bottom fixedly connected with first toper extrusion pole (8), first toper extrusion pole (8) bottom fixedly connected with second toper extrusion pole (9), second toper extrusion pole (9) are less than the aperture between a plurality of first elastic sheet (2), second toper extrusion pole (9) support simultaneously on the inside wall of a plurality of second elastic sheet (3), first toper extrusion pole (8) support simultaneously on the inside wall of a plurality of first elastic sheet (2).
2. The stainless steel expansion screw connection structure according to claim 1, wherein an outer hexagonal rotating block (6) is fixedly connected to the top of the connecting rod (7), and the outer hexagonal rotating block (6) is used for driving the connecting rod (7) to rotate.
3. The stainless steel expansion screw connection structure according to claim 1, wherein a plurality of conical spines (4) are fixedly connected to the side walls of each first elastic piece (2) and each second elastic piece (3).
4. The stainless steel expansion screw connection structure according to claim 1, wherein the expansion pipe (1) and the connecting rod (7) are made of high-strength stainless steel materials.
5. A stainless steel expansion screw connection according to claim 1, characterized in that the bottom of the expansion pipe (1) is arranged in a conical shape.

Description

Stainless steel expansion screw connection structure Technical Field The utility model relates to the technical field of expansion screws, in particular to a stainless steel expansion screw connecting structure. Background The expansion screw is fixed by utilizing wedge-shaped inclination to promote the sleeve to expand and be spread and generate friction grip between the sleeve and the hole surface to be installed so as to achieve the fixing effect. In the design of the expansion screw, the convenience of installation is considered, and the stability of functions is ensured. For example, chinese patent publication No. CN218598560U discloses an expansion screw, which comprises a screw, a nut, an expansion pipe and a plurality of expansion pieces, wherein the left end of the screw is provided with a conical bulge, the diameter of the conical bulge is sequentially reduced from left to right, the right end of the screw is provided with a clamping joint, the nut is sleeved on the screw in a threaded fit mode, the expansion pipe is sleeved on the screw and is positioned between the conical bulge and the nut, the expansion pipe comprises a left pipe part and a right pipe part which are integrally connected, the left pipe part is in a circular truncated cone shape, the diameter of the left pipe part is sequentially reduced from left to right, and the left pipe part is divided into a plurality of expansion pieces which are distributed around the central axis of the expansion pipe at equal angles through openings. But in above-mentioned scheme, the device is when using, drives the lug through twisting the nut and extrudees a plurality of expansion piece to fix the expansion pipe, because the expansion piece is located the one end of expansion pipe, make the expansion pipe only have one end at the stress point when fixed, thereby influence the fixed effect of expansion pipe. Disclosure of utility model The utility model provides a stainless steel expansion screw connecting structure, which solves the problems in the prior art. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The utility model provides a stainless steel inflation screw connection structure, includes the expansion pipe, the expansion pipe bottom is solid setting, the expansion pipe lateral wall rotates and is connected with a plurality of first elastic pieces, and a plurality of first elastic pieces are annular setting, a plurality of first elastic piece inside wall all is the slope form setting, the expansion pipe lateral wall rotates and is connected with a plurality of second elastic pieces, and a plurality of second elastic pieces are annular setting, a plurality of second elastic piece inside wall all is the slope form setting, a plurality of annular aperture in the middle of the first elastic piece is greater than the annular aperture in the middle of a plurality of second elastic pieces; The top is equipped with the internal thread in the expansion pipe, expansion pipe internal thread connection has the connecting rod, the connecting rod outer lane is equipped with the external screw thread, the connecting rod passes through external screw thread threaded connection in the expansion pipe, the first toper extrusion pole of connecting rod bottom fixedly connected with, first toper extrusion pole bottom fixedly connected with second toper extrusion pole, the second toper extrusion pole is less than the aperture between a plurality of first elastic pieces, the second toper extrusion pole supports simultaneously on the inside wall of a plurality of second elastic pieces, first toper extrusion pole supports simultaneously on the inside wall of a plurality of first elastic pieces. As a further improvement scheme of the technical scheme, the top of the connecting rod is fixedly connected with an outer hexagonal rotating block, and the outer hexagonal rotating block is used for driving the connecting rod to rotate. As a further improvement scheme of the technical scheme, the side walls of each first elastic piece and each second elastic piece are fixedly connected with a plurality of cone spines. As a further improvement scheme of the technical scheme, the expansion pipe and the connecting rod are both made of high-strength stainless steel materials. As a further improvement scheme of the technical scheme, the bottom of the expansion pipe is arranged in a conical shape. Compared with the prior art, the expansion screw has the beneficial effects that when the expansion screw is used, the expansion pipe is inserted into a hole of a wall, then the connecting rod is inserted into the expansion pipe, the connecting rod drives the second conical extrusion rod and the first conical extrusion rod to enter the expansion pipe, the second conical extrusion rod passes through the middle of the plurality of first elastic pieces and abuts against the inner side walls of the plurality of second elastic pieces, at t