CN212536365U

CN212536365U - Expansion screw

Info

Publication number: CN212536365U
Application number: CN202021412356.3U
Authority: CN
Inventors: 沈永胜
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-02-12
Anticipated expiration: 2030-07-17

Abstract

The utility model discloses an expansion screw in built-in fitting technical field, including an expansion cylinder and screw, an expansion cylinder includes the round platform spare reaches the inside internal thread hole of seting up of round platform spare, one side in internal thread hole is connected with a plurality of inflation waists, the screw includes the cylinder, the both ends of cylinder be equipped with respectively with internal thread hole matched with screw thread head one and screw thread head two, the middle part of cylinder is equipped with spacing ring, spacing ring is close to one side of screw thread head one is equipped with the transition arch, and this expansion screw can guarantee that the screw is laminated in the wall, and the fastness is high, need not consider the problem of wall body when the installation, and direct mount is fixed, and the screw can conveniently take out after using, can install once more and use, and convenient to use, the practicality is very high, is fit for extensive popularization.

Description

Expansion screw

Technical Field

The utility model relates to an embedded part technical field specifically is expansion screw.

Background

Currently, the known expansion screw is composed of a conical screw rod, an expansion sleeve and a nut. When the expansion sleeve is installed, the expansion screw is driven into the installation hole by a hammer, the nut is screwed by a wrench to pull the conical screw rod, so that the expansion sleeve deforms and expands, and the hole wall is extruded to be fixed. However, the expansion screw has the defects of more materials, complex manufacturing process and poor adaptability, and if the expansion screw meets an old wall or a soft wall such as a foam brick, the existing expansion screw has poor strength, cannot be taken out, has potential safety hazards, and is very dangerous and inconvenient.

Based on this, the utility model designs an expansion screw to solve the above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an expansion screw to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the inflation screw, including an inflation section of thick bamboo and screw, an inflation section of thick bamboo includes round platform spare and the inside internal thread hole of seting up of round platform spare, one side in internal thread hole is connected with a plurality of inflation waists, the screw includes the cylinder, the both ends of cylinder be equipped with respectively with internal thread hole matched with thread head one and thread head two, the middle part of cylinder is equipped with spacing ring, spacing ring is close to one side of thread head one is equipped with the transition arch.

Preferably, a plurality of the expansion waists are arranged at equal intervals along the axial direction of the circular truncated cone.

Preferably, the first screw thread head, the second screw thread head, the limiting ring, the transition bulge and the cylinder are of an integrally formed structure.

Preferably, the diameter of the transition bulge gradually increases from one end of the first screw thread head to one end of the limiting ring.

Compared with the prior art, the beneficial effects of the utility model are that: this inflation screw simple structure, save material carry out simple to operate to an inflation section of thick bamboo, owing to under spacing ring's effect, can guarantee the screw and laminate in the wall, the fastness is high, need not consider the problem of wall body when the installation, and direct mount is fixed, and the screw can conveniently take out after using, can install once more and use, and convenient to use, the practicality is very high, is fit for extensively promoting.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the expansion cylinder of the present invention;

fig. 3 is a schematic view of the screw structure of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. an expansion cylinder; 101. a circular truncated cone; 102. an internally threaded bore; 103. expanding the waist; 2. a screw; 201. a cylinder; 202. a first thread head; 203. a second thread head; 204. a limiting ring; 205. and (4) transition bulges.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-3, the present invention provides a technical solution: expansion screw, including an expansion cylinder 1 and screw 2, an expansion cylinder 1 includes round platform spare 101 and the inside internal thread hole 102 of seting up of round platform spare 101, one side of internal thread hole 102 is connected with a plurality of inflation waists 103, screw 2 includes cylinder 201, the both ends of cylinder 201 be equipped with respectively with internal thread hole 102 matched with first 202 of thread and two 203 of thread, the middle part of cylinder 201 is equipped with spacing ring 204, spacing ring 204 is close to one side of first 202 of thread is equipped with transition arch 205.

Wherein a plurality of the expansion waists 103 are provided at equal intervals in the axial direction of the round table 101.

The first screw head 202, the second screw head 203, the limit ring 204, the transition bulge 205 and the column body 201 are of an integrally formed structure.

Wherein, the diameter of the transition bulge 205 is gradually increased from one end of the first screw thread head 202 to one end of the limit ring 204.

The specific working principle is as follows:

during installation, screw thread head 202 is screwed into the internal thread hole 102 of the circular truncated cone component 1, then the expansion cylinder 1 is pushed to a proper depth, the external nut is pressed by a fixed body through a screw thread head two 203, the screw 1 can be guaranteed to be attached to the wall under the action of the limiting ring 204, the firmness is high, the problem of the wall body is not needed to be considered during installation, direct installation is fixed, the external nut on the screw thread head two 203 is rotated, under the action of the external nut, under the action of the transition bulge 205, the expansion waists 103 on the circular truncated cone component 101 can be expanded until the expansion waists are expanded to a certain degree, after the use is completed, the screw 2 can be conveniently taken out, the installation and the use can be carried out again, the use is convenient, the practicability is high, and the expansion waists are suitable for wide popularization.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Inflation screw, its characterized in that: including an inflation section of thick bamboo (1) and screw (2), an inflation section of thick bamboo (1) reaches including round platform spare (101) the inside internal thread hole (102) of seting up of round platform spare (101), one side of internal thread hole (102) is connected with a plurality of inflation waists (103), screw (2) are including cylinder (201), the both ends of cylinder (201) be equipped with respectively with internal thread hole (102) matched with first (202) of thread and first two (203) of thread, the middle part of cylinder (201) is equipped with spacing ring (204), spacing ring (204) are close to one side of first (202) of thread is equipped with transition arch (205).

2. The expansion screw of claim 1, wherein: the plurality of expansion waists (103) are arranged at equal intervals along the axial direction of the circular truncated cone (101).

3. The expansion screw of claim 1, wherein: the first screw head (202), the second screw head (203), the limiting ring (204), the transition bulge (205) and the column body (201) are of an integrally formed structure.

4. The expansion screw of claim 1, wherein: the diameter of the transition bulge (205) is gradually increased from one end of the first screw head (202) to one end of the limiting ring (204).