CN220565434U

CN220565434U - Fixing element

Info

Publication number: CN220565434U
Application number: CN202321053146.3U
Authority: CN
Inventors: 徐跃飞
Original assignee: Fischer Taicang Building Anchor Bolt Co ltd
Current assignee: Fischer Taicang Building Anchor Bolt Co ltd
Priority date: 2023-04-13
Filing date: 2023-05-05
Publication date: 2024-03-08
Anticipated expiration: 2033-05-05
Also published as: CN116537385A

Abstract

The utility model discloses a fixing element, comprising: a tapered connector comprising at least a tapered connector head and a threaded portion; the expansion sleeve is sleeved on the conical connecting piece, and the expansion sleeve is integrally connected with a expansion ring; the expansion sleeve is provided with a split opening along the axial direction of the expansion sleeve so that the expansion sleeve is in a cylindrical structure with an open side surface, a first edge and a second edge are formed at the split opening, a limiting protrusion is arranged on the first edge, a limiting groove is arranged on the second edge, and the limiting protrusion is matched with the limiting groove so that the limiting protrusion is limited in the limiting groove; wherein the middle portion of the expansion sleeve bulges outwardly in its radial direction to form a sleeve bulge. The utility model adopts the integrated expansion sleeve and the diffusion ring, thereby saving materials and reducing cost.

Description

Fixing element

Technical Field

The utility model relates to the technical field of fasteners, in particular to a fixing element.

Background

With the development of social economy, the living quality of people is improved, higher requirements are put forward on the quality of living environment, the development of curtain wall decoration industry is promoted, the curtain walls of stone, ceramic plates and clay plates are widely used, higher requirements are put forward on the safety performance and construction process of the curtain wall, and fixing elements are commonly applied to the construction of the building exterior facing stone curtain wall.

Patent CN204401835U discloses a screw-type fixing element connected by stone, which belongs to a screw-type fixing element, and comprises a screw-type sleeve and a expansion ring which are independent of each other, which need to be separately prepared, have high cost, and are difficult to ensure the vertical positioning of the screw.

Disclosure of Invention

In view of the above, the present utility model is directed to a fixing element.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

a fixation element capable of being anchored in an undercut borehole, comprising:

a tapered connector comprising at least a tapered connector head and a threaded portion;

the expansion sleeve is sleeved on the conical connecting piece;

wherein the expansion sleeve bulges outwardly in its radial direction to form a sleeve bulge.

Alternatively, a fixation element that is capable of being anchored in an undercut borehole, comprising:

the expansion sleeve is sleeved on the conical connecting piece, and the expansion sleeve is integrally connected with a expansion ring.

Wherein the conical connecting piece is a conical bolt, a conical screw and/or a conical rivet.

The expansion sleeve is provided with a cut along the axial direction of the expansion sleeve so that the expansion sleeve is in a cylindrical structure with an open side surface, a first edge and a second edge are formed at the cut, and the cut is a contact area where the first edge and the second edge intersect;

the first edge is provided with a limiting protrusion, the second edge is provided with a limiting groove, and the limiting protrusion is matched with the limiting groove so that the limiting protrusion is limited in the limiting groove;

wherein the middle portion of the expansion sleeve bulges outwardly in its radial direction to form a sleeve bulge.

The fixing element, wherein the diffuser ring includes: and a plurality of diffusion structures extending outwards from one end of the expansion sleeve, which is close to the head part of the connecting piece, wherein the diffusion structures are encircled to form a ring shape.

In the above fixing element, a groove is formed on a side of each two adjacent diffusion structures, which is close to the head of the connector, so that a plurality of diffusion structures can be unfolded to be petal-shaped due to the pressure provided by the head of the connector.

The fixing element is characterized in that each diffusion structure is provided with a through hole along the thickness direction of the diffusion structure.

The fixing element is characterized in that the hole is a trapezoid hole, the short side of the trapezoid hole is close to the head of the connecting piece, and the long side of the trapezoid hole is far away from the head of the connecting piece.

In the above fixing element, each of the diffusion structures protrudes outwards to form a diffusion bump.

The fixing element is characterized in that the hole is a trapezoid hole, and the diffusion convex points are located at the short sides of the trapezoid hole.

The fixing element, wherein one side of the head of the connecting piece protrudes outwards to form a connecting piece salient point.

The fixing element is characterized in that an inward concave rotation point is arranged on the inner wall of one side of the expansion sleeve, which is far away from the head part of the connecting piece.

The fixing element is characterized in that the limiting protrusion and the limiting groove are both located at the sleeve protruding portion.

The fixing element, wherein the sleeve boss is formed with a substantially flat platform at its center.

The above fixing element, wherein the distance between the surface of the platform and the surface of the expansion sleeve at the non-bulge is half the thickness of the expansion sleeve.

The fixing element, wherein a cavity is formed on one side of the platform facing the conical connecting piece.

The above-described fixing element, wherein a length in an axial direction of the sleeve boss is smaller than a length in an axial direction of the expansion sleeve;

the length of the sleeve boss in the axial direction is one third to one half of the length of the expansion sleeve in the axial direction.

The above-mentioned fixing element, wherein the thickness at the end of the expansion sleeve is the same as the thickness at the boss of the sleeve.

The fixing element as described above, wherein,

the above-described fixing element, wherein the sleeve boss extends in a circumferential direction around the tapered connection.

The above-mentioned fixing element, wherein, in particular, the sleeve projection extends in the entire circumferential direction of the conical connection.

The utility model adopts the technology, so that compared with the prior art, the utility model has the positive effects that:

(1) The utility model adopts the integrated sleeve and the diffusion ring, thereby saving materials and reducing cost. The sleeve can fully fill gaps of the holes, and ensures vertical positioning of the screw. The nested structure can effectively prevent the expansion of the gap during installation, so that the stress is more uniform.

(2) The diffusion convex points on the diffusion ring can increase the friction force with the plate.

(3) The trapezoid hole can save more labor in installation, and the rotation point can prevent the components from being separated and scattered in transportation.

(4) The sinking design of the upper port of the sleeve can effectively reduce the shearing stress of the edge of the stone hole, thereby reducing the risk of cracking and falling of the plate and avoiding personal and property losses. In addition, the hollow cavity structure of the sleeve can also play a role in buffering load impact.

Drawings

Fig. 1 is a schematic view of a taper bolt of a fixing element of the present utility model.

Fig. 2 is a schematic cross-sectional view of a taper bolt of a fixation element of the present utility model.

Fig. 3 is a schematic view of a fixation element of the present utility model.

Fig. 4 is a schematic view of a sleeve of the fixation element of the present utility model.

Fig. 5 is an enlarged partial schematic view of the fixing element of the present utility model at a of fig. 4.

Fig. 6 is a schematic view of a sleeve of the fixation element of the present utility model.

Fig. 7 is a schematic side view of the sleeve of the fixation element of the present utility model.

Fig. 8 is a schematic installation view of the fixing element of the present utility model.

In the accompanying drawings: 1. a taper bolt; 11. a connector head; 111. connecting piece salient points; 12. a threaded portion; 2. an expansion sleeve; 21. cutting open; 211. a first edge; 212. a second edge; 213. a limit protrusion; 214. a limit groove; 22. a sleeve boss; 221. a platform; 23. a spin point; 3. a pressure expansion ring; 31. a diffusion structure; 311. a groove; 312. a hole; 313. and diffusing the convex points.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "transverse," "vertical," and the like are used for convenience in describing the present utility model based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the device or element to be referred to must have a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, "horizontal" and "vertical" are used to describe a general positional relationship, and are not strictly "horizontal" or "vertical".

Referring to fig. 1-8, there is shown a preferred embodiment of a fixation element anchored in an undercut borehole, preferably a back bolt, comprising: a conical bolt 1 and an expansion sleeve 2, the conical bolt 1 at least comprising a conical connector head 11 and a threaded portion 12; the expansion sleeve 2 is sleeved on the taper bolt 1.

The connector head 11 is a bolt head.

Further, the expansion sleeve 2 of the back bolt of this embodiment is bulged outwardly in its radial direction to form a sleeve boss 22. The sleeve boss 22 can fully fill the hole gap, ensuring vertical positioning of the screw.

Preferably, the expansion sleeve 2 is integrally connected with a diffuser ring 3.

Preferably, the taper bolt 1 may further comprise a straight portion 13 between the connector head 11 and the threaded portion 12.

It should be noted that although the present embodiment illustrates such fasteners only in terms of bolt distance, fasteners such as screws, rivets, etc. that are similar to bolts are also within the scope of the present utility model.

Further, as a preferred embodiment, the expansion sleeve 2 is provided with a split 21 along the axial direction thereof so that the expansion sleeve 2 has a cylindrical structure with an open side, the split 21 is provided with a first edge 211 and a second edge 212, the first edge 211 is provided with a limit protrusion 213, the second edge 212 is provided with a limit groove 214, and the limit protrusion 213 is matched with the limit groove 214 so that the limit protrusion 213 is limited in the limit groove 214.

Specifically, the limiting protrusion 213 and the limiting groove 214 are all in a fishtail shape, and the fishtail nesting knot can effectively prevent the expansion of the gap during installation, so that the stress is more uniform.

More specifically, the limiting projection 213 preferably has two beveled edges or curved edges such that the dimension of the side of the limiting projection 213 distal from the first edge 211 is greater than the dimension of the side thereof proximal to the first edge 211, thereby allowing the limiting projection 213 to snap into the limiting slot 214.

The shape of the stopper projection 213 may be any one as long as it can restrict the displacement along the outer circumference of the sleeve 2 so that it cannot be separated from the stopper groove 214.

Preferably, the expansion sleeve 2 and the diffuser ring 3 are integrally formed using a stainless steel plate having a thickness of 1.5 mm. It should be noted that the integral type means that the expansion sleeve 2 and the expansion ring 3 are integrally connected by various means. As a further, more specific preferred embodiment, one piece may also mean that the expansion sleeve 2 and the expansion ring are integrated when formed and not subsequently fixed to one piece by various means of connection.

Preferably, the expansion sleeve 2 and the diffuser ring 3 are integrally stamped from sheet material. More preferably, the limiting boss 213, the limiting groove 214, the sleeve boss 22, the groove 311, the hole 312, and the diffusion bump 313 are all stamped from the sheet material.

Further, as a preferred embodiment, the middle portion of the expansion sleeve 2 is bulged outwardly in its radial direction to form a sleeve bulge 22. The expansion sleeve 2 with the sleeve projection 22 can fill the hole gap sufficiently to ensure vertical positioning of the screw.

The upper end of the expansion sleeve 2 adopts a sinking design, so that the effect of shearing stress on the edges of the holes of the plate can be effectively reduced.

Further, as a preferred embodiment, the diffuser ring 3 includes: a plurality of diffusion structures 31 extend outwardly from the end of the expansion sleeve 2 adjacent the connector head 11, the plurality of diffusion structures 31 being looped around.

Further, as a preferred embodiment, each adjacent pair of the diffuser structures 31 is provided with a groove 311 on a side thereof adjacent to the connector head 11 so that the plurality of diffuser structures 31 can be expanded into a petal shape due to the pressure provided by the connector head 11.

Further, as a preferred embodiment, each of the diffusion structures 31 is provided with a hole 312 extending therethrough along the thickness direction thereof.

Further, as a preferred embodiment, the aperture 312 is a trapezoidal aperture with the shorter sides of the trapezoidal aperture disposed proximate the connector head 11 and the longer sides of the trapezoidal aperture disposed distal from the connector head 11. The trapezoid holes can save more labor during installation.

Further, as a preferred embodiment, each of the diffusion structures 31 protrudes outward to form a diffusion bump 313, and the diffusion bump 313 can increase friction with the plate.

Further, as a preferred embodiment, the diffusion bump 313 is located at the short side of the trapezoid hole.

Preferably, the diffuser structure 31 has a greater thickness on the side facing the connector head 11 than on the side of the diffuser structure 31 facing away from the connector head 11.

Preferably, the height of the trapezoidal aperture is greater than the depth of the slot 311. Specifically, the long base of the trapezoidal hole is located at the upper side of the groove 311 shown in fig. 3.

Preferably, the outer edge of the diffuser structure 31 is curved, and more particularly, the outer edge is shown at the lower end of the diffuser structure 31 in FIG. 6.

It should be noted that the features described above, particularly with respect to the diffuser structure 31, the aperture 312, and the diffuser bump 313, may be selected in one of the embodiments or combined in other embodiments.

Further, as a preferred embodiment, one side of the connector head 11 protrudes outward to form a connector bump 111. The connector bumps 111 facilitate later installation of applied torque.

The connecting piece bumps 111 are stud bumps.

Further, as a preferred embodiment, the inner wall of the expansion sleeve 2 on the side facing away from the connector head 11 is provided with an inwardly recessed rotation point 23. The rotation point 23 prevents the components from being detached and scattered during transportation.

Further, as a preferred embodiment, both the limit projection 213 and the limit groove 214 are located at the sleeve boss 22.

Further, as a preferred embodiment, the sleeve boss 22 is formed with a generally flat platform 221 at its center.

Further, as a preferred embodiment, the distance between the surface of the platform 221 to the surface of the expansion sleeve 2 where it is not bulged is half the thickness of the expansion sleeve 2.

Further, as a preferred embodiment, the side of the platform 221 facing the tapered connector 1 forms a cavity that allows the platform 211 to deform when subjected to pressure and provides room for deformation.

Further, as a preferred embodiment, the length of the sleeve boss 22 in the axial direction is smaller than the length of the expansion sleeve 2 in the axial direction.

Further, as a preferred embodiment, the length of the sleeve boss 22 in the axial direction is one third to one half of the length of the expansion sleeve 2 in the axial direction.

Further, as a preferred embodiment, the thickness at the end of the expansion sleeve 2 is the same as the thickness at the sleeve boss 22.

Further, as a preferred embodiment, the sleeve boss 22 extends in a circumferential direction around the tapered connector 1.

In other words, the sleeve boss 22 extends in the entire circumferential direction. Specifically, the sleeve protrusion 22 is distributed or substantially distributed over the entire circumferential direction of the expansion sleeve 2, in particular when the expansion sleeve 2 is formed in a circular shape, the stop projection 213 being inserted into the stop groove 214, the sleeve protrusion 22 extending, in particular continuously, over the entire circumferential direction.

Furthermore, it should be noted that the above-described features of the present utility model may be freely combined to form a plurality of embodiments.

The foregoing description is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present utility model, and are intended to be included within the scope of the present utility model.

Claims

1. A fixation element capable of being anchored in an undercut borehole, comprising:

a tapered connection (1), the tapered connection (1) comprising a tapered connection head (11) and a threaded portion (12);

the expansion sleeve (2) can be sleeved on the conical connecting piece (1); wherein the expansion sleeve (2) bulges outwards in its radial direction to form a sleeve bulge (22).

2. A fixing element according to claim 1, characterized in that the expansion sleeve (2) is provided with a cut-out (21) along its axial direction so that the expansion sleeve (2) is in a laterally open tubular structure, the cut-out (21) being formed with a first edge (211) and a second edge (212), the cut-out (21) being a contact area where the first edge (211) and the second edge (212) meet;

the first edge (211) is provided with a limiting protrusion (213), the second edge (212) is provided with a limiting groove (214), and the limiting protrusion (213) is matched with the limiting groove (214) so that the limiting protrusion (213) is limited in the limiting groove (214).

3. A fixing element according to claim 2, characterized in that the limit projection (213) and the limit groove (214) are both located at the sleeve projection (22).

4. The fastening element according to claim 1, characterized in that a diffuser ring (3) is integrally connected to the expansion sleeve (2).

5. The fastening element according to claim 4, characterized in that the diffuser ring (3) comprises: a plurality of diffusion structures (31) extending outwards from one end of the expansion sleeve (2) close to the head (11) of the connecting piece, wherein the diffusion structures (31) are surrounded to form a ring shape;

a groove (311) is formed in one side of each two adjacent diffusion structures (31) close to the connector head (11), and each diffusion structure (31) expands outwards along the radial direction due to the movement of the expansion sleeve (2) against the connector head (11);

each diffusion structure (31) is provided with a through hole (312) along the thickness direction.

6. The fixation element according to claim 5, characterized in that the hole (312) is a trapezoidal hole, the short side of which is arranged close to the connector head (11), the long side of which is arranged away from the connector head (11);

each diffusion structure (31) protrudes outwards to form a diffusion convex point (313);

the diffusion convex point (313) is positioned at the short side of the trapezoid hole.

7. A fixing element according to claim 1, characterized in that one side of the connector head (11) protrudes outwards to form a connector bump (111).

8. A fixing element according to claim 1, characterized in that the inner wall of the expansion sleeve (2) on the side facing away from the connector head (11) is provided with a recessed screwing point (23).

9. A fixing element according to claim 1, characterized in that the sleeve boss (22) is formed with a substantially flat platform (221) at its centre.

10. A fixing element according to claim 9, characterized in that the distance between the surface of the platform (221) to the surface of the expansion sleeve (2) where it is not bulged is half the thickness of the expansion sleeve (2).

11. The fixation element according to claim 9, characterized in that the side of the platform (221) facing the cone-shaped connection (1) forms a cavity.

12. A fixing element according to claim 1, characterized in that the length of the sleeve boss (22) in the axial direction is smaller than the length of the expansion sleeve (2) in the axial direction;

the length of the sleeve boss (22) in the axial direction is one third to one half of the length of the expansion sleeve (2) in the axial direction.

13. A fixing element according to claim 1, characterized in that the thickness at the end of the expansion sleeve (2) is the same as the thickness at the sleeve boss (22).

14. A fixing element according to claim 1, characterized in that the sleeve projection (22) extends in a circumferential direction around the conical connection (1).

15. A fixing element according to claim 14, characterized in that the sleeve projection (22) extends in the entire circumferential direction.