CN213541001U - Expansion screw - Google Patents
Expansion screw Download PDFInfo
- Publication number
- CN213541001U CN213541001U CN202022141185.1U CN202022141185U CN213541001U CN 213541001 U CN213541001 U CN 213541001U CN 202022141185 U CN202022141185 U CN 202022141185U CN 213541001 U CN213541001 U CN 213541001U
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- CN
- China
- Prior art keywords
- casing
- bracing piece
- nut
- locating part
- expansion screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses an expansion screw, which comprises a housin, the inside of casing is provided with the bracing piece, the top of bracing piece is provided with the nut, the nut with be provided with the gasket between the casing. The utility model discloses in, be provided with the casing, the bracing piece, erect the hole, the gasket, the nut, the lug, the spout, locating part and perpendicular groove structure, perpendicular hole can be seted up to the side of the casing of traditional inflation screw, the inside of casing is provided with the bracing piece, two spouts have been seted up to the side of lug, two perpendicular grooves have been seted up to the bottom side of bracing piece, the spout is linked together with perpendicular groove, spout and the intercommunication department who erects the groove are convex, two are erected the inslot and all are provided with the locating part, the locating part runs through the casing, the top of locating part is provided with the arch, prop up the casing along with the rotatory bracing piece of nut, at the in-process of bracing piece lifting, the fixed hole of laminating that the locating part can gradually, until going.
Description
Technical Field
The utility model relates to a mounting equipment technical field especially relates to an expansion screw.
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 with an iron sheet, a half of the iron sheet cylinder is provided with a plurality of notches, 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 is tightly fixed on the wall, and the wall is generally used for fastening protective guards, rain canopies, air conditioners and the like on materials such as cement, bricks and the like. The expansion screw consists of a screw rod, an expansion pipe and other parts, the tail part of the screw rod is conical, and the inner diameter of the cone is larger than that of the expansion pipe. When the nut is screwed down, the screw rod moves outwards, the conical part moves through the axial movement of the threads, so that a large positive pressure is formed on the peripheral surface of the expansion pipe, and the angle of the cone is small, so that friction self-locking is formed among the wall body, the expansion pipe and the cone, and the fixing effect is achieved. The existing expansion screw is easy to rotate after being fixed and touched, so that the connection is loosened.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: in order to solve the problems, an expansion screw is provided.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an expansion screw, includes the casing, the inside of casing is provided with the bracing piece, the top of bracing piece is provided with the nut, the nut with be provided with the gasket between the casing.
As a further description of the above technical solution:
two vertical holes are formed in the side face of the shell.
As a further description of the above technical solution:
the bottom of the supporting rod is provided with a circular truncated cone-shaped convex block, and the top of the supporting rod is provided with threads.
As a further description of the above technical solution:
two sliding grooves are formed in the side face of the protruding block, two vertical grooves are formed in the side face of the bottom of the supporting rod, the sliding grooves are communicated with the vertical grooves, and the communicating positions of the sliding grooves and the vertical grooves are arc-shaped.
As a further description of the above technical solution:
two erect inslot and all be provided with the locating part, the locating part runs through the casing.
As a further description of the above technical solution:
the top of locating part is provided with the arch.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
the utility model is provided with a shell, a support rod, a vertical hole, a gasket, a nut, a convex block, a sliding groove, a limiting part and a vertical groove structure, wherein the side surface of the shell of the traditional expansion screw is provided with the vertical hole, the inside of the shell is provided with the support rod, the top part of the support rod is provided with the nut, the gasket is arranged between the nut and the shell, the bottom part of the support rod is provided with a round platform-shaped convex block, the top part of the support rod is provided with a screw thread, the support rod is lifted by the rotation of the nut and then the shell is propped open for fixing, but the fixing is unstable and easy to rotate, the side surface of the convex block is provided with two sliding grooves, the bottom side surface of the support rod is provided with two vertical grooves, the sliding grooves are communicated with the vertical grooves, the communication part of the sliding grooves and the vertical grooves, at the in-process of bracing piece lifting, the locating part can be gradually the fixed hole of laminating, until will protruding top income hole inner wall, has restricted the rotation of screw.
Drawings
Fig. 1 shows a schematic overall structure diagram provided according to an embodiment of the present invention;
fig. 2 shows a schematic diagram of a support rod structure provided according to an embodiment of the present invention.
Illustration of the drawings:
1. a housing; 2. a support bar; 3. vertical holes; 4. a gasket; 5. a nut; 6. a bump; 7. a chute; 8. a limiting member; 9. a vertical slot.
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.
Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides an expansion screw, includes casing 1, and casing 1's inside is provided with bracing piece 2, and the top of bracing piece 2 is provided with nut 5, is provided with gasket 4 between nut 5 and the casing 1, and 4 one sides of gasket are provided with coarse line and are used for increasing and fixed wall between the frictional force, and 5 rotations of nut can draw into casing 1 inside with bracing piece 2, then strut casing 1 and fixed pore wall laminating completion fixed.
Specifically, as shown in fig. 1, two vertical holes 3 are formed in the side surface of the housing 1, and the two vertical holes 3 are used for conveniently supporting the housing 1 by the support rod 2 and attaching to the wall of the fixed hole to complete the fixation.
Specifically, as shown in fig. 2, a truncated cone-shaped protrusion 6 is disposed at the bottom of the support rod 2, a thread is disposed at the top of the support rod 2, the truncated cone-shaped protrusion 6 can prop the housing 1 open, and the thread at the top of the support rod 2 is used for engaging with the nut 5.
Specifically, as shown in fig. 1 and 2, two sliding grooves 7 have been seted up to the side of lug 6, two vertical grooves 9 have been seted up to the bottom side of bracing piece 2, sliding groove 7 and vertical groove 9 are linked together, the intercommunication department of sliding groove 7 and vertical groove 9 is arc, all be provided with locating part 8 in two vertical grooves 9, locating part 8 runs through casing 1, swivel nut 5, lug 6 bottom bracing piece 2 backs down casing 1, locating part 8 can remove along vertical groove 9, excessively get into sliding groove 7 through the arc between vertical groove 9 and the sliding groove 7, then along with the increase of the degree of depth that bracing piece 2 got into casing 1, locating part 8 slowly inserts the rotation of hole can prevent the screw.
Specifically, as shown in fig. 1, a protrusion is disposed on the top of the limiting member 8, and the protrusion is sharp and is easily inserted into the inner wall of the hole.
The working principle is as follows: during the use, at first put into the fixed orifices dug in advance with the inflation screw, with 4 laminating walls on gasket, swivel nut 5, because nut 5 and 2 threaded connection of bracing piece, bracing piece 2 can get into the inside of casing 1, and lug 6 can strut casing 1 simultaneously, and locating part 8 can remove along vertical slot 9, through the excessive spout 7 that gets into of arc between vertical slot 9 and the spout 7, then along with the increase of the degree of depth that bracing piece 2 got into in the casing 1, the inner wall that locating part 8 slowly inserted the hole can prevent the rotation of screw.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The expansion screw comprises a shell (1) and is characterized in that a supporting rod (2) is arranged inside the shell (1), a nut (5) is arranged at the top of the supporting rod (2), and a gasket (4) is arranged between the nut (5) and the shell (1).
2. Expansion screw according to claim 1, characterized in that the housing (1) is provided with two vertical holes (3) in its lateral surface.
3. The expansion screw according to claim 1, characterized in that the bottom of the support rod (2) is provided with a boss (6) in the shape of a truncated cone, and the top of the support rod (2) is threaded.
4. The expansion screw according to claim 3, wherein two sliding grooves (7) are formed in the side surface of the projection (6), two vertical grooves (9) are formed in the side surface of the bottom of the support rod (2), the sliding grooves (7) are communicated with the vertical grooves (9), and the communication position of the sliding grooves (7) and the vertical grooves (9) is in the shape of a circular arc.
5. Expansion screw according to claim 4, characterized in that a stop (8) is arranged in both of said vertical slots (9), said stop (8) extending through said housing (1).
6. Expansion screw according to claim 5, characterised in that the top of the retainer (8) is provided with a protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022141185.1U CN213541001U (en) | 2020-09-26 | 2020-09-26 | Expansion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022141185.1U CN213541001U (en) | 2020-09-26 | 2020-09-26 | Expansion screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213541001U true CN213541001U (en) | 2021-06-25 |
Family
ID=76494649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022141185.1U Active CN213541001U (en) | 2020-09-26 | 2020-09-26 | Expansion screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213541001U (en) |
-
2020
- 2020-09-26 CN CN202022141185.1U patent/CN213541001U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |