CN211231192U - Stable form expansion screw - Google Patents
Stable form expansion screw Download PDFInfo
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- CN211231192U CN211231192U CN201922181300.5U CN201922181300U CN211231192U CN 211231192 U CN211231192 U CN 211231192U CN 201922181300 U CN201922181300 U CN 201922181300U CN 211231192 U CN211231192 U CN 211231192U
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Abstract
The utility model provides a stable form inflation screw relates to hardware component technical field, has solved the inflation screw that exists among the prior art and has taken place not hard up technical problem easily. The stable expansion screw comprises an expansion part, a positioning part, a connecting part and a screw cap; the two ends of the connecting part are respectively connected with the nail cap and the expansion part, and the positioning part is arranged in the middle of the connecting part; the central axes of the expansion part, the positioning part and the connecting part are superposed; the length of the positioning part in the radial direction is greater than the diameter of the connecting part and less than the diameter of the nail cap; the expansion direction of the expansion part is perpendicular to the extension surface of the positioning part. The utility model is used for stability can around improving the installation of inflation screw.
Description
Technical Field
The utility model belongs to the technical field of hardware component technique and specifically relates to a stable form inflation screw is related to.
Background
The expansion screw is generally a metal expansion screw, and the expansion screw is fixed by utilizing the wedge-shaped slope to promote expansion to generate friction bond force so as to achieve the fixing effect. One end of the screw is provided with threads, and the other end of the screw is provided with conicity. The outer surface of the wall is covered by an iron sheet (some steel pipes), a half of an iron sheet cylinder (steel pipe) is provided with a plurality of notches, the iron sheet cylinder (steel pipe) and the notches are plugged into a hole drilled on the wall together, then a nut is locked, the nut pulls a screw outwards to pull the taper into the iron sheet cylinder, the iron sheet cylinder is expanded, and then the iron sheet cylinder is tightly fixed on the wall, and the steel pipe is widely used for fastening protective guards, rain awnings, air conditioners and the like on materials such as cement, bricks and the.
The applicant has found that the prior art has at least the following technical problems:
the existing collision screw is easy to loosen in the installation process and is inconvenient to use; the stability after installation is not good.
Disclosure of Invention
An object of the utility model is to provide a stable form inflation screw to solve the inflation screw that exists among the prior art and take place not hard up technical problem easily. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a stable expansion screw, which comprises an expansion part, a positioning part, a connecting part and a screw cap; the two ends of the connecting part are respectively connected with the nail cap and the expansion part, and the positioning part is arranged in the middle of the connecting part; the central axes of the expansion part, the positioning part and the connecting part are superposed; the length of the positioning part in the radial direction is greater than the diameter of the connecting part and less than the diameter of the nail cap; the expansion direction of the expansion part is perpendicular to the extension surface of the positioning part.
Preferably, the connecting portion is columnar, a first through hole is formed in the middle of the contraction connecting portion, the extending direction of the first through hole is perpendicular to the expanding direction of the expansion portion, and the positioning portion is arranged inside the first through hole.
Preferably, one end of the positioning part close to the expansion part is connected with the inner wall of the first through hole.
Preferably, the positioning part is an expansion piece; the connecting part is close to one end of the expansion part and is provided with a second through hole, and the second through hole is superposed with the central axes of the connecting part and the expansion part.
Preferably, the positioning part comprises a first unfolding wing and a second unfolding wing, the first unfolding wing and the second unfolding wing are the same in shape and size and are oppositely arranged in a mirror image relationship.
Preferably, the connecting part and the expansion part are columnar, and the outer diameter of the connecting part is equivalent to the outer diameter of the expansion part in a state of not receiving external force.
Preferably, one end of the expansion part, which is far away from the connecting part, is provided with a chamfer.
Preferably, the outer side of the expansion part is provided with an anti-slip groove.
Preferably, one end of the positioning part close to the expansion part is provided with a chamfer.
Preferably, the outer side of the positioning part is provided with an anti-slip groove.
The stable expansion screw provided by the utility model is provided with the positioning part which is protruded in the radial direction and is not subjected to the expansion part in the state, the screw can be prevented from being separated in the installation process, and the installation is convenient; and the expansion direction of the positioning part is vertical to the extension surface of the positioning part, so that the whole expansion screw is more uniformly stressed, and the stability is better.
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 is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of a stabilized expansion screw according to the present invention;
fig. 2 is a schematic side view of a stabilized expansion screw according to the present invention.
In FIG. 1, an expansion part; 2. a positioning part; 3. a connecting portion; 31. a first through hole; 32. a second through hole; 4. and (5) a nail cap.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the present invention provides a stable expansion screw, which comprises an expansion part 1, a positioning part 2, a connecting part 3 and a nut 4; two ends of the connecting part 3 are respectively connected with the nail cap 4 and the expansion part 1, and the positioning part 2 is arranged in the middle of the connecting part 3; the central axes of the expansion part 1, the positioning part 2 and the connecting part 3 are superposed; the length of the positioning part 2 in the radial direction is greater than the diameter of the connecting part 3 and less than the diameter of the nail cap 4; the expansion direction of the expansion part 1 is perpendicular to the extension surface of the positioning part 2. In the radial direction, the positioning part 2 protrudes out of the expansion part 1, and the expansion screw is pre-reinforced in the installation process of the expansion screw, so that the expansion screw is prevented from being separated in the installation process; in addition, the expansion direction of the expansion part 1 is perpendicular to the extension direction of the positioning part 2, the acting force of the expansion screw to the outside is more uniform, and the stability is better. During the use, inflation screw collocation one end has the wedge, and the other end matches the screw rod that has the nut and uses, and the screw rod coincides with inflation screw's the central axis, and the screw rod runs through the utility model relates to a stable form inflation screw, its one end installation that has the wedge is preceding to be popped out inflation portion 1. (the using method of the screw is the same as the prior art, which is not the key point of the utility model)
As an optional embodiment of the present invention, the connecting portion 3 is a column, the middle portion of the contracting connecting portion 3 is provided with a first through hole 31, the extending direction of the first through hole 31 is perpendicular to the expanding direction of the expanding portion 1, and the positioning portion 2 is disposed inside the first through hole 31; wherein inflation portion 1, connecting portion 3 and nail cap 4 structure as an organic whole, the setting element is processed alone, inside the combination reaches first through-hole 31.
As an optional embodiment of the present invention, one end of the positioning portion 2 close to the expansion portion 1 is connected to the inner wall of the first through hole 31; when the hole to be installed is inserted, the insertion process is smoother.
As an optional embodiment of the present invention, the positioning portion 2 is an expansion member; one end of the connecting part 3 close to the expansion part 1 is provided with a second through hole 32, and the central axes of the second through hole 32 and the connecting part 3 are superposed; the positioning piece adopts an expansion piece, so that stronger acting force is achieved after the installation is finished, and the stability is better.
As an optional embodiment of the present invention, the positioning portion 2 includes a first unfolding wing and a second unfolding wing, both of which have the same shape and size and are arranged in a mirror relationship. The middle part of the screw is provided with a second wedge head, and the second wedge head pushes the expansion part 1 to expand along with the outward pulling of the screw, and simultaneously the wedge head at the middle part of the screw pushes the positioning part 2 to expand towards two sides.
As an optional embodiment of the utility model, connecting portion 3, inflation portion 1 are the column, and the external diameter of connecting portion 3 is not equivalent to the external diameter size under the external force state with inflation portion 1, and the processing of being convenient for give birth to, and the use is also better smooth and easy in addition.
As an optional embodiment of the present invention, the end of the expansion portion 1 away from the connecting portion 3 is provided with a chamfer.
As an optional embodiment of the present invention, the outer side of the expansion portion 1 is provided with an anti-slip groove.
As an optional embodiment of the present invention, one end of the positioning portion 2 close to the expansion portion 1 is provided with a chamfer.
As an optional embodiment of the present invention, the outer side of the positioning portion 2 is provided with an anti-slip groove.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A stable expansion screw is characterized by comprising an expansion part, a positioning part, a connecting part and a screw cap;
the two ends of the connecting part are respectively connected with the nail cap and the expansion part, and the positioning part is arranged in the middle of the connecting part;
the central axes of the expansion part, the positioning part and the connecting part are superposed; the length of the positioning part in the radial direction is greater than the diameter of the connecting part and less than the diameter of the nail cap; the expansion direction of the expansion part is perpendicular to the extension surface of the positioning part.
2. The stable expansion screw according to claim 1, wherein the connecting portion is cylindrical, a first through hole is formed in a middle portion of the contracting connecting portion, an extending direction of the first through hole is perpendicular to an expanding direction of the expanding portion, and the positioning portion is disposed inside the first through hole.
3. The stabilized expansion screw according to claim 2, wherein an end of the positioning portion adjacent to the expansion portion is connected to an inner wall of the first through hole.
4. The stabilized expansion screw of claim 2, wherein the positioning portion is an expansion member; the connecting part is close to one end of the expansion part and is provided with a second through hole, and the second through hole is superposed with the central axes of the connecting part and the expansion part.
5. The stabilized expansion screw of claim 4, wherein said positioning portion includes a first extending wing and a second extending wing, both of which are identical in shape and size and are oppositely disposed in mirror image relation.
6. The stabilized expansion screw according to claim 1, wherein the connecting portion and the expansion portion are in a cylindrical shape, and an outer diameter of the connecting portion is equal to an outer diameter of the expansion portion when the expansion portion is not subjected to an external force.
7. The stabilized expansion screw according to claim 1, wherein an end of the expansion portion remote from the connection portion is provided with a chamfer.
8. The stabilized expansion screw according to claim 1, wherein the outer side of the expansion portion is provided with a slip-resistant groove.
9. The stabilized expansion screw according to claim 1, wherein one end of the positioning portion near the expansion portion is provided with a chamfer.
10. The stabilized expansion screw according to claim 1, wherein the outer side of the positioning portion is provided with a slip-resistant groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922181300.5U CN211231192U (en) | 2019-12-06 | 2019-12-06 | Stable form expansion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922181300.5U CN211231192U (en) | 2019-12-06 | 2019-12-06 | Stable form expansion screw |
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| Publication Number | Publication Date |
|---|---|
| CN211231192U true CN211231192U (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922181300.5U Active CN211231192U (en) | 2019-12-06 | 2019-12-06 | Stable form expansion screw |
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| Country | Link |
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| CN (1) | CN211231192U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116006562A (en) * | 2023-01-09 | 2023-04-25 | 广东卡诺亚家居股份有限公司 | Nail body, expansion nail and panel interval adjustable structure |
-
2019
- 2019-12-06 CN CN201922181300.5U patent/CN211231192U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116006562A (en) * | 2023-01-09 | 2023-04-25 | 广东卡诺亚家居股份有限公司 | Nail body, expansion nail and panel interval adjustable structure |
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