TWM649032U - Recyclable expansion bolt set - Google Patents

Abstract

A recyclable expansion bolt set is used to solve the problem that conventional expansion bolts are difficult to take out after being buried. The system includes: a first end of a cylinder having a screw hole portion extending toward the second end, the second end having at least one open groove, and an outer surface of the cylinder having the at least one open groove. At least one annular groove, the at least one annular groove is used for inserting an open fastener, and the inner surface of the barrel with the at least one open groove is provided with a tapered hole portion, the tapered hole portion extends from adjacent to the screw hole portion toward The second end has a tapered inner diameter; a fixing component has a threaded portion for screwing into the screw hole portion of the barrel; the fixing component has a contact portion, and the contact portion is formed adjacent to the thread The portion has a tapered surface with tapered diameter toward the second end.

Description

Recyclable expansion bolt set

The invention relates to an expansion bolt group, in particular to a recyclable expansion bolt group that is embedded in a hole in a fixed object and can be easily taken out.

The conventional expansion bolt set places a screw rod in a cylinder. The screw rod has a tapered head. The screw rod and the cylinder body are buried together in a hole of a fixed object. The threaded part of the screw rod protrudes from the hole. On the surface of the fixed object, the protruding threaded portion can be screwed by a nut, so that a fixed object can be fixed to the fixed object. The conventional expansion bolt set is commonly used on the exterior wall of a building, such as : Signboards, shelves for placing cooling machines, etc.

When the conventional expansion bolt set is used, since the screw rod placed in the shell tube only has a single size, when the protruding length or thread diameter of the screw rod needs to be changed, the screw rod must be buried in the fixation hole. It becomes very difficult to remove the shell and the screw from the shell, so that workers may even grind the embedded and protruding screw, and then re-implant the expansion bolt set of different specifications in the adjacent position. , In this way, not only is it time-consuming, but the re-implanted expansion bolt group is also adjacent to the previously implanted expansion bolt group, causing the strength of the fixation to be destroyed, resulting in the re-implantation of the expansion bolt. The group will have the problem of insufficient adhesion.

In view of this, it is indeed necessary to improve the conventional expansion bolt set.

In order to solve the above problems, the main purpose of this invention is to provide a recyclable expansion bolt set, in which the shell tube and the screw rod embedded in the hole of the fixed object can be easily taken out.

The secondary purpose of this invention is to provide a recyclable expansion bolt set. When the shell tube and the screw rod embedded in the hole of the fixed object are not in use, the screw rod system can be taken out and the shell tube system can be made not to protrude. is located in a hole in a fixture so that the shell remains in a reusable state.

Another purpose of this invention is to provide a recyclable expansion bolt set that can be replaced with connectors of different structures according to different needs of use, so as to achieve diversified fixing methods for different needs.

The directionality or similar terms mentioned throughout this creation, such as "front", "back", "left", "right", "upper (top)", "lower (bottom)", "inner", "outer" , "side", etc. mainly refer to the directions of the attached drawings. Each directionality or similar terms are only used to assist in explaining and understanding the various embodiments of the present invention, and are not used to limit the present invention.

The use of the quantifier "a" or "one" in the components and components recorded in the entire text of this creation is only for convenience of use and to provide the usual meaning of the scope of this creation; in this creation, it should be interpreted as including one or at least one, and single The concept of also includes the plural unless it is obvious that something else is meant.

The recyclable expansion bolt set of the present invention may include: a cylinder with a first end and a second end opposite each other. The first end has a screw hole extending toward the second end. The second end It has at least one open groove, the at least one open groove forms an opening on the end surface of the second end, and the outer surface of the barrel with the at least one open groove has at least one annular groove, and the at least one annular groove is used for a The opening fastener is inserted so that the opening fastener does not protrude from the outer surface of the cylinder. The opening fastener has the elasticity to be closed. The inner surface of the cylinder having the at least one opening groove is provided with A tapered hole part, one end of the tapered hole part is adjacent to the screw hole part, and the tapered hole part is from adjacent to the screw hole part to the second The inner diameter of the end is tapered; a fixing member has an opposite first end and a second end, the first end has a driving part, and a threaded part is used to be screwed to the screw hole part of the barrel , the second end has a contact portion, the contact portion is adjacent to the threaded portion, and the contact portion forms a tapered surface with tapered diameter from adjacent to the threaded portion toward the second end.

Accordingly, in the recyclable expansion bolt set of the present invention, since the barrel has the opening fastener with constant radial shrinkage force at the second end, when the abutting portion of the fixing member is not in contact When opening the tapered hole portion of the barrel, the opening fastener can force the second end of the barrel to contract radially. In this way, the driving portion of the fixing member can be clamped by tools such as pliers, so that the second end of the barrel can be tightened radially. The fixing piece and the cylinder can be easily removed from the hole of the fixing piece.

Wherein, the outer surface of the first end of the barrel has at least one radially protruding protrusion. In this way, when the cylinder is embedded in a fixed object, the cylinder will not rotate in the fixed object, and the cylinder and the hole wall of the fixed object have a better adhesion effect.

Wherein, the tapered hole part also includes a straight part with a constant inner diameter, and the straight part is adjacent to the smallest inner diameter part of the tapered hole part. In this way, the contact portion of the fixing member can contact the straight portion, which can ensure that the second end of the barrel always expands radially.

Wherein, one of the at least one annular groove corresponds to the straight portion. In this way, it can be ensured that the second end of the barrel always has the effect of radial contraction force.

Wherein, the fixing part further includes a stress fragile part and a detachable part, the end surface of the detachable part forms the second end of the fixing part, the contact part is located at the detachable part, and the stress fragile part Between the threaded part and the detachable part. The fixing part can be broken by the stress fragile part, so that the detachable part and the fixing part are separated and not connected.

Wherein, when the stress-vulnerable part can withstand a force less than the torsional force of rotating the fixing part, the fixing part is broken by the stress-vulnerable part, so that the detachable part is not separated from the fixing part. connection. In this way, the detachable portion will still remain in the barrel, and the second end of the barrel can still maintain the function of radially expanding, so that the barrel is still fastened in the hole of the fixture.

Wherein, when the fixing member is taken out from the cylinder, the detachable part still remains in the cylinder, so that the second end of the cylinder still maintains radial expansion. In this way, the detachable portion will still remain in the barrel, and the second end of the barrel can still maintain the function of radially expanding, so that the barrel is still fastened in the hole of the fixture.

The recyclable expansion bolt set of the present invention may further include an external component, the external component has a second connection part, and the first end of the fixing part further includes a first connection part, and the first connection part is connected to the first connection part. The second connection part is combined. In this way, when the second connecting portion of the external component is combined with the first connecting portion of the fixing component, the external component can serve to connect a fixed object.

Wherein, the first connecting part is a screw hole, and the second connecting part is a threaded part. In this way, the external component can be easily connected to the fixing component.

[This creation]

1:Cylinder

1a: first end

1b:Second end

11: Screw hole part

12:Protrusion

13: Open slot

14: Ring groove

15: Open fastener

16:Taper hole part

17: Straight part

2: Fixtures

2a: first end

2b: Second end

21:Thread part

22:Drive Department

23:Butt part

24: Stress Vulnerability Department

25:Separable part

26:First connection part

3:External parts

31: Second connection part

C: Tools

F: Fixture

H:Hole

[Figure 1] An exploded perspective view of the first embodiment of this invention.

[Figure 2] An exploded cross-sectional view of the first embodiment of this invention.

[Figure 3] A cross-sectional view of the first embodiment of the present invention being fixed to a fixed object.

[Figure 4] As shown in Figure 3, the situation of taking out the cylinder from the fixed object.

[Figure 5] An exploded cross-sectional view of the second embodiment of this invention.

[Figure 6] Cross-sectional view of the usage of the second embodiment of this invention.

[Fig. 7] A view showing the state of taking out the fixing member from the object to be fixed as shown in Fig. 6.

[Figure 8] An exploded perspective view of the third embodiment of this invention.

In order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, preferred embodiments of the present invention are cited below and explained in detail with reference to the attached drawings.

The directionality mentioned in this creation or its similar terms, such as "front", "back", "left", "right", "upper (top)", "lower (bottom)", "inner", "outer", "Side", etc. mainly refer to the directions of the attached drawings. Each directionality or similar terms are only used to assist in explaining and understanding the embodiments of the present invention, and are not used to limit the present invention.

Please refer to Figures 1 and 2, which is the first embodiment of the recyclable expansion bolt set of the present invention. It can include a cylinder 1 and a fixing part 2. The fixing part 2 can be screwed to the cylinder. A screw hole portion 11 of 1.

The cylinder 1 has an opposite first end 1a and a second end 1b. The first end 1a has a screw hole portion 11 extending toward the second end 1b. The first end 1a of the cylinder 1 The outer surface of the cylinder 1 may have at least one radially protruding protrusion 12 so that when the cylinder 1 is embedded in a fixture, the cylinder 1 will not rotate in the fixture. The cylinder 1 has at least one opening groove 13 at the second end 1b. The at least one opening groove 13 forms an opening at the end surface of the second end 1b, so that the cylinder 1 can expand and deform at the second end 1b. . In this embodiment, the barrel 1 has four opening slots 13 distributed at equal angles at the second end 1b. In this way, the barrel 1 is more easily expanded and deformed and deformed evenly. The outer surface of the cylinder 1 with the at least one open groove 13 has at least one annular groove 14. The at least one annular groove 14 is recessed in the outer surface of the cylinder 1. The at least one annular groove 14 can provide an open buckle. The component 15 is inserted so that the opening fastener 15 sinks into the at least one annular groove 14 so that the opening fastener 15 does not protrude from the outer surface of the barrel 1. The opening fastener 15 has a closable The elasticity enables the cylinder 1 to always have a radial contraction force at the second end 1b. having the at least one open slot The inner surface of the cylinder 1 of 13 has a tapered hole part 16, one end of the tapered hole part 16 is adjacent to the screw hole part 11, and the tapered hole part 16 is from adjacent to the screw hole part 11 to the second end 1b The inner diameter is tapered. Preferably, the tapered hole portion 16 also includes a straight portion 17 with a constant inner diameter. The straight portion 17 is adjacent to the smallest inner diameter portion of the tapered hole portion 16 . Preferably, one of the at least one annular groove 14 corresponds to the straight portion 17 .

The fixing part 2 has a threaded part 21 so that the fixing part 2 can be screwed to the screw hole part 11 of the barrel 1 through the threaded part 21. The fixing part 2 has an opposite first end 2a and A second end 2b, the first end 2a has a driving part 22, the driving part 22 can be a conventional cap head or a counterbore, which is not limited by this invention, so that the fixing member 2 can be driven to rotate. The second end 2b of the fixing member 2 has a contact portion 23, which is adjacent to the threaded portion 21. The contact portion 23 faces from the first end 2a of the fixing member 2 toward the second The end 2b has a tapered surface with a tapered diameter. When the fixing member 2 is screwed to the screw hole portion 11 of the cylinder 1 by the threaded portion 21, the contact portion 23 can abut against the cylinder 1 The tapered hole portion 16 allows the second end 1b of the cylinder 1 to expand radially (as shown in Figure 3), so that the cylinder 1 can be screwed to a fixed object F. Hole H.

Please refer to Figure 4, when the cylinder 1 is to be taken out from the hole H of the fixture F, first the fixture 2 is rotated in the opposite direction from the cylinder 1, so that the contact portion 23 leaves the tapered hole portion 16 of the cylinder 1. At this time, the opening fastener 15, which always has a force of radial contraction, can force the second end 1b of the cylinder 1 to contract radially. In this way, the The driving part 22 of the fixing part 2 can be clamped by tools C such as pliers, so that the fixing part 2 and the cylinder 1 can be easily taken out from the hole H of the fixing object F.

Please refer to Figure 5, which is the second embodiment of the invention. Compared with the first embodiment, the cylinder 1 can be flush with the hole H of the fixture F without being taken out. In this invention In the embodiment, the fixing member 2 further includes a stress fragile part 24 and a detachable part 25. The detachable part 25 The end surface of the portion 25 forms the second end 2b of the fastener 2, the contact portion 23 is located at the detachable portion 25, and the stress fragile portion 24 is between the threaded portion 21 and the detachable portion 25. The stress-vulnerable portion 24 can be formed by grinding, sawing, etc., to form the most stress-vulnerable part of the fixing member 2 . In this embodiment, the stress-vulnerable portion 24 has a diameter smaller than The diameters of the threaded portion 21 and the detachable portion 25 cause the stress-vulnerable portion 24 to form the most stress-vulnerable portion of the fastener 2 .

Please continue to refer to Figure 6. When a fixed object is to be fixed to the fixed object F, the cylinder 1 is first placed in a hole H of the fixed object F, and the fixing member 2 is removed from the fixed object F. The threaded portion 21 is screwed into the threaded hole portion 11 of the cylinder 1. In this way, by strong rotation, the contact portion 23 can abut against the tapered hole portion 16 of the cylinder 1, so that the cylinder The second end 1b of 1 can be radially expanded, so that the cylinder 1 can be screwed tightly into the hole H of a fixture F. When the stress-fragile portion 24 can withstand a force less than the torsional force of rotating the fixing member 2 , the fixing member 2 can be broken by the stress-vulnerable portion 24 with the most fragile stress, so that the detachable portion 25 is separated from the fixing member 2 . Separately not connected. And even if the fixing part 2 is rotated in the reverse direction and taken out of the cylinder 1 (as shown in Figure 7), the detachable part 25 will still remain in the cylinder 1, and the second end of the cylinder 1 1b remains radially expanded, so that the cylinder 1 is still fastened in the hole H of the fixture F, and the first end 1a of the cylinder 1 is flush and does not protrude from the fixture F s surface.

Please refer to Figure 8, which is the third embodiment of the present invention. Compared with the first embodiment, the recyclable expansion bolt set of the present invention can also include an external component 3, which can be combined with The invention is not limited to the fixing part 2 of the first embodiment or the second embodiment. In this embodiment, the fixing part 2 disclosed in the first embodiment is used for illustration. The third part of the fixing part 2 One end 2a further includes a first connecting portion 26. The first connecting portion 26 can be a screw hole or a threaded portion. This invention is not limited. The first connecting portion 26 can be used for an external connector 3. The corresponding second The connecting part 31 is combined. As shown in the figure, the first connecting part 26 is a screw hole, and the second connecting part 31 of the external component 3 is a threaded part. In this way, the external component 3 uses the second connecting part 31 is combined with the first connecting part 26 of the fixing part 2, the external part 3 can be used for suspending a fixed object.

To sum up, in the recyclable expansion bolt set of the present invention, since the barrel has the opening fastener with constant radial shrinkage force at the second end, when the contact portion of the fixing member is not Contacting the tapered hole portion of the cylinder, the open fastener can cause the second end of the cylinder to radially contract. In this way, the driving portion of the fixing member can be clamped by tools such as pliers. The fixing member and the cylinder can be easily taken out from the hole of the fixing object. In addition, the fixing member may further include a stress fragile portion and a detachable portion at the second end. In this way, when the stress fragile portion can withstand a force smaller than the torsional force of rotating the fixing member, the fixing member can be formed by stress. The most fragile stress-fragile part breaks, leaving the detachable part and the fixing member separated and unconnected and remaining in the barrel, so that the second end of the barrel remains radially expanded and still fastened. It can be reused in the hole of the fixture. Moreover, the recyclable expansion bolt set of the present invention can also include an external component that can be combined with the fixing component, so that the expansion bolt set can be used in a variety of different ways.

Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make various changes and modifications relative to the above-described embodiments without departing from the spirit and scope of the invention. The technical scope protected by the creation, therefore, the protection scope of the creation shall include all changes within the literal and equivalent scope recorded in the appended patent application scope.

1:Cylinder

1a: first end

1b:Second end

11: Screw hole part

12:Protrusion

13: Open slot

14: Ring groove

15: Open fastener

16:Taper hole part

17: Straight part

2: Fixtures

2a: first end

2b: Second end

21:Thread part

22:Drive Department

23:Butt part

Claims (9)

A recyclable expansion bolt set includes: a cylinder with an opposite first end and a second end, the first end has a screw hole portion extending toward the second end, and the second end has at least An open groove, the at least one open groove forms an opening on the end surface of the second end, and the outer surface of the barrel with the at least one open groove is provided with at least one annular groove, and the at least one annular groove is used for an open fastener. Placed so that the opening fastener does not protrude from the outer surface of the cylinder, the opening fastener has the elasticity to be closed, and a tapered hole is provided on the inner surface of the cylinder with the at least one opening groove. part, one end of the tapered hole part is adjacent to the screw hole part, and the inner diameter of the tapered hole part is tapered from adjacent to the screw hole part toward the second end; a fixing piece has an opposite first end and a first end. Two ends, the first end has a driving part, a threaded part for screwing into the screw hole part of the barrel, the second end has a contact part, the contact part is adjacent to the threaded part , the contact portion forms a tapered surface with tapered diameter from adjacent to the threaded portion toward the second end. The retrievable expansion bolt set of claim 1, wherein the outer surface of the first end of the barrel has at least one radially protruding protrusion. The recyclable expansion bolt set of claim 1, wherein the tapered hole portion further includes a straight portion with a constant inner diameter, and the straight portion is adjacent to the smallest inner diameter portion of the tapered hole portion. The retrievable expansion bolt set of claim 3, wherein one of the at least one annular groove corresponds to the straight portion. The recyclable expansion bolt set of claim 1, wherein the fixing member further includes a stress fragile part and a detachable part, the end surface of the detachable part forms the second end of the fixing part, and the contact part Located at the detachable part, the stress fragile part is between the threaded part and the detachable part. The recyclable expansion bolt set of claim 5, wherein when the stress-vulnerable part can withstand a force less than the torsional force of rotating the fixing part, the fixing part breaks from the stress-vulnerable part, The detachable part is separated from the fixing part and is not connected. As in the recyclable expansion bolt set of claim 6, when the fixing member is taken out of the cylinder, the detachable portion still remains in the cylinder, so that the second end of the cylinder still maintains radial expansion. The recyclable expansion bolt set of claim 1 further includes an external component, the external component has a second connection part, and the first end of the fixing part further includes a first connection part, and the first connection part is connected to The second connection part is combined. The recyclable expansion bolt set of claim 8, wherein the first connecting part is a screw hole, and the second connecting part is a threaded part.

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