CN210164769U

CN210164769U - Expansion bolt easy to disassemble and remove and repair

Info

Publication number: CN210164769U
Application number: CN201921054442.9U
Authority: CN
Inventors: 雷大军; 雷乐雯
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2020-03-20
Anticipated expiration: 2029-07-08

Abstract

The utility model discloses an easily removable and easy expansion bolts who restores, including nut, double-screw bolt and expansion pipe, the double-screw bolt comprises column section and conic section, the conic section is the frustum form, the expansion pipe comprises standard section and expansion section, the nut passes through the screw thread and is connected with the double-screw bolt, the expansion pipe suit is in the double-screw bolt outside, conic section bottom edge is provided with a plurality of bosss, the boss is about double-screw bolt central axis array distribution, form the arc breach between the adjacent boss, expansion pipe side bottom is provided with a plurality of incisions, the incision is cut apart into a plurality of expansion sections bottom the expansion pipe, the expansion section matches with the arc breach and sets up; the design that the arc breach that adopts the expansion section of expansion pipe and double-screw bolt bottom boss to form matches the setting for expansion bolts demolishs convenient and fast more, and because the expansion section stretches into the arc breach at the inflation in-process, makes expansion pipe inflation direction controllable, and then makes demolishs the back expansion pipe and restores easier.

Description

Expansion bolt easy to disassemble and remove and repair

Technical Field

The utility model relates to an expansion bolts especially relates to an easy dismouting is removed and expansion bolts who easily repairs.

Background

An expansion bolt is an anchoring device that can be installed by drilling holes in existing buildings. When the device is used, holes with corresponding sizes are drilled on the fixed body by using an impact electric drill (hammer), then the bolt and the expansion pipe are arranged in the holes, and the bolt, the expansion pipe, the mounting piece and the fixed body can be expanded into a whole by screwing the nut.

The existing expansion bolt is difficult to remove, even if the expansion bolt is removed, the expansion bolt can be seriously damaged and cannot be reused, waste is caused, and the cost is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an easily removable expansion bolts who removes and easily restore to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an easy dismouting is removed and easy expansion bolts who restores, includes nut, double-screw bolt and expansion pipe, the double-screw bolt comprises column section and conic section, and the conic section is the frustum form, and the expansion pipe comprises standard section and expansion segment, and the nut passes through the screw thread to be connected with the double-screw bolt, and the expansion pipe suit is in the double-screw bolt outside, its characterized in that, conic section bottom edge is provided with a plurality of bosss, and the boss forms the arc breach about double-screw bolt central axis array distribution between the adjacent boss, and expansion pipe side bottom is provided with a plurality of incisions, and a plurality of expansion segments are cut apart into with the expansion pipe bottom to the incision, and the expansion segment.

Preferably, the top of the stud is provided with an installation groove, and a surface formed by a center line of the installation groove in the length direction and a radial center line of an arc gap between two adjacent bosses is vertical to the bottom surface of the stud; the edge of the top end of the expansion pipe is communicated with a plurality of openings which are distributed along the axis array of the expansion pipe, and the openings are matched with the expansion section.

Preferably, the bottom of the nut is fixedly connected with a ring piece, the outer diameter of the ring piece is larger than the opposite side size of the nut, and the inner diameter of the ring piece is larger than or equal to the inner diameter of the nut.

Preferably, the number of the bosses and the number of the expansion sections are two, and the number of the gaps is two.

Preferably, the number of the bosses and the number of the expansion sections are three, and the number of the gaps is six.

The utility model has the advantages that:

the design that the arc breach that adopts the expansion section of expansion pipe and double-screw bolt bottom boss to form matches the setting for expansion bolts demolishs convenient and fast more, and because the expansion section stretches into the arc breach at the inflation in-process, makes expansion pipe inflation direction controllable, and then makes demolishs the back expansion pipe and restores easier.

Drawings

Fig. 1 is a schematic view of the locking state of the present invention;

FIG. 2 is a partial enlarged view of the position A of the present invention;

FIG. 3 is a partial enlarged view of the position B of the present invention;

fig. 4 is a schematic structural view of the nut of the present invention;

fig. 5 is a schematic structural view of a stud of the present invention;

FIG. 6 is a schematic structural view of the expansion pipe of the present invention;

FIG. 7 is a partial schematic view of an expansion tube according to the present invention;

fig. 8 is a schematic view of a first disassembled state of the present invention;

fig. 9 is a schematic view of the second disassembled state of the present invention.

In the figure, a nut 1, a stud 2, a mounting groove 21, a column section 22, a conical section 23, a boss 24, an expansion pipe 3, a standard section 31, an expansion section 32, a notch 33, a workpiece 4 to be fastened and a drill hole 5 are arranged.

Detailed Description

The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.

Referring to fig. 1 to 9, an expansion bolt easy to detach and repair in an embodiment of the present invention includes a nut 1, a stud 2 and an expansion pipe 3, where the stud 2 is composed of a column section 22 and a cone section 23, the cone section 23 is in a frustum shape, the expansion pipe 3 is composed of a standard section 31 and an expansion section 32, the nut 1 is connected with the stud 2 through a thread, and the expansion pipe 3 is sleeved outside the stud 2, and is characterized in that a ring is fixedly connected to the bottom of the nut 1, an outer diameter of the ring is greater than an opposite side dimension of the nut 1, and an inner diameter of the ring is greater than or equal to an inner diameter of the nut 1; the bottom edge of the conical section 23 is provided with a plurality of bosses 24, the bosses 24 are distributed about a central axis array of the stud 1, arc-shaped gaps are formed between the adjacent bosses 24, the bottom of the side surface of the expansion pipe 3 is provided with a plurality of notches, the notches divide the bottom of the expansion pipe 3 into a plurality of expansion sections 32, and the expansion sections 32 are matched with the arc-shaped gaps; the top of the stud 2 is provided with an installation groove 21, and a surface formed by the center line of the installation groove 21 in the length direction and the radial center line of the arc gap between two adjacent bosses 24 is vertical to the bottom surface of the stud 1; the edge of the top end of the expansion pipe 3 is provided with a plurality of notches 33, the notches 33 are distributed along the axis array of the expansion pipe 3, and the notches 33 are matched with the expansion section 32.

The utility model discloses a theory of operation is:

the number of the bosses 24 and the number of the expansion sections 32 are both T, T is more than or equal to 2, when T is 2, the number of the gaps 33 is 2, and when T is more than 2, the number of the gaps 33 is 2T.

During installation:

sleeving the expansion pipe 3 on the stud 2, integrally installing the expansion pipe into the drill hole 5, sleeving the workpiece 4 to be fastened, and ensuring that two opposite notches 33 of the expansion pipe 3 are collinear with the installation groove 21 at the top end of the stud 2 when the workpiece is installed into the hole. (the installation groove 21 and the opening 33 can be adjusted to be collinear by inserting a screwdriver into the installation groove 21 and rotating the stud 2, the operation is convenient)

Then the nut 1 is screwed, and the expansion section 32 at the tail end of the expansion pipe 3 is expanded, so that the locking is completed.

In the locking process, the expansion section 32 extends into an arc notch formed between adjacent bosses 24 at the bottom of the stud 2, so that the expansion direction of the expansion pipe 3 is controllable, and the expansion pipe 3 is easier to repair after being dismantled.

The first disassembly state:

firstly, the nut 1 is unscrewed, the workpiece 4 to be fastened is taken down, then the nut 1 is screwed, the nut 1 is screwed to the end part of the stud 2 and is flush with the end part of the stud 2, the end surface of the nut 1 is lightly knocked (the mounting groove 21 can be prevented from being damaged), and the expansion pipe 3 in an expansion state can be separated from the conical section 23 and outwards ejected.

The second disassembly state:

the stud 2 is rotated by inserting a screwdriver into the mounting groove 21

The bottom end of the expansion section 32 is in contact with the boss 24, the stud 2 is pulled out, and meanwhile, the expansion pipe 3 is taken out, so that the expansion bolt is more convenient to disassemble.

If when dismantling, expansion pipe 3 extrudees overtightly with the mounting hole, accomplish the back at first dismantlement state, place the adjustable spanner (adjustable spanner's internal diameter is greater than expansion pipe 3 external diameter and is less than 1 bottom ring piece external diameter of nut) in the double-screw bolt 2 outside and with the wall contact of drilling 5 place, insert mounting groove 21 with the screwdriver and support double-screw bolt 2 gently and prevent double-screw bolt 2 from rotating, screw nut 1, nut 1 can not continue to make axial motion after contacting with the adjustable spanner, double-screw bolt 2 removes outside the mounting hole under the reaction force this moment, and then take out expansion pipe 3, and then make expansion bolt also can conveniently demolish under special condition.

Example one

The mounting state and the first detached state are the same as described above, and in the second detached state, the stud 2 is rotated by 90 ° and taken out of the expansion tube 3.

Example two

The mounting state and the first detached state are the same as described above, and in the second detached state, the stud 2 is rotated by 60 ° and taken out of the expansion tube 3.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. The utility model provides an easy dismouting and easy expansion bolts who restores, includes nut (1), double-screw bolt (2) and expansion pipe (3), double-screw bolt (2) comprise column section (22) and conic section (23), conic section (23) are the frustum form, and expansion pipe (3) comprise standard section (31) and expansion section (32), and nut (1) is connected with double-screw bolt (2) through the screw thread, and expansion pipe (3) suit is in double-screw bolt (2) outside, a serial communication port, conic section (23) bottom edge is provided with a plurality of boss (24), and boss (24) are distributed about double-screw bolt (2) center pin array, form the arc breach between adjacent boss (24), and expansion pipe (3) side bottom is provided with a plurality of incisions, and a plurality of expansion sections (32) are cut apart into to expansion pipe (3) bottom to the incision, and expansion section (32) match with the arc breach and set up.

2. An easily removable and repairable expansion bolt according to claim 1, wherein: the top of the stud (2) is provided with an installation groove (21), and a surface formed by the center line of the installation groove (21) in the length direction and the radial center line of the arc gap between two adjacent bosses (24) is vertical to the bottom surface of the stud (2); the edge of the top end of the expansion pipe (3) is communicated with a plurality of notches (33), the notches (33) are distributed along the axis array of the expansion pipe (3), and the notches (33) are matched with the expansion section (32).

3. An easily removable and repairable expansion bolt according to claim 1, wherein: the bottom of the nut (1) is fixedly connected with a ring piece, the outer diameter of the ring piece is larger than the opposite side size of the nut (1), and the inner diameter of the ring piece is larger than or equal to the inner diameter of the nut (1).

4. An easily removable and repairable expansion bolt according to claim 2, wherein: the number of the bosses (24) and the number of the expansion sections (32) are two, and the number of the gaps (33) is two.

5. An easily removable and repairable expansion bolt according to claim 2, wherein: the number of the bosses (24) and the number of the expansion sections (32) are three, and the number of the gaps (33) is six.