CN216895240U - Anchoring structure and expansion bolt - Google Patents

Abstract

The utility model provides an anchoring structure and an expansion bolt, and relates to the technical field of hardware tools. The anchoring structure includes a threaded rod, an expansion assembly, and a drive assembly. The expansion assembly comprises a first expansion pipe, a double-end conical pipe and a second expansion pipe which are sequentially sleeved on the screw rod, the front end of the double-end conical pipe penetrates through the rear end of the first expansion pipe, the rear end of the double-end conical pipe penetrates through the front end of the second expansion pipe, the rear end of the first expansion pipe and the front end of the second expansion pipe are respectively provided with a cutting groove so as to divide the first expansion pipe and the second expansion pipe into a plurality of blades, and the plurality of blades can be opened towards the outside of the expansion assembly; the driving assembly comprises a rotating piece and a gasket, the front end of the rotating piece is abutted to the rear end of the gasket, the gasket is sleeved on the screw rod, and the rotating piece is connected with the screw rod and used for driving the screw rod to rotate so as to drive the first expansion pipe to rotate and move towards the second expansion pipe. The anchoring structure provided by the utility model effectively improves the connection stability and the anti-pulling capacity, and reduces the loosening probability.

Description

Anchoring structure and expansion bolt

Technical Field

The utility model relates to the technical field of hardware tools, in particular to an anchoring structure and an expansion bolt.

Background

Expansion bolts, also known as expansion screws, are commonly used to fix guard rails, awnings, air conditioners and the like to cement or brick materials. The expansion bolt comprises a screw rod and an expansion pipe, the expansion pipe is sleeved outside the screw rod, a nut is screwed at one end of the screw rod, the other end of the screw rod is arranged in a taper mode, and a plurality of notches arranged along the axis are arranged on one side, far away from the nut, of the expansion pipe. When the expansion pipe is used, one end of the screw, which is far away from the nut, is inserted into the hole on the wall body together with the expansion pipe, and the nut is screwed in the direction close to the expansion pipe, so that the screw is pulled out of the wall by the nut, the taper part of the screw is pulled into the expansion pipe, and the expansion pipe is opened from the notch and inserted into the wall body, so that the expansion pipe is fixed in the wall body. The expansion bolt in the prior art is not firmly connected with a wall body, and is easy to loosen when the load shakes greatly, so that safety accidents are caused.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides an anchoring structure for overcoming the defects in the prior art, so as to solve the technical problems that the expansion bolt in the prior art is not firmly connected with a wall body, and is easy to loosen when the load vibration is large, which causes a safety accident.

The utility model provides the following technical scheme:

an anchoring structure for anchoring in a mounting hole of a wall, comprising;

the end part of the screw rod is provided with an external thread;

the expansion assembly comprises a first expansion pipe, a double-end conical pipe and a second expansion pipe which are sequentially sleeved on the screw rod, the first expansion pipe is provided with an internal thread matched with the external thread, the front end of the double-end conical pipe penetrates through the rear end of the first expansion pipe, the rear end of the double-end conical pipe penetrates through the front end of the second expansion pipe, the rear end of the first expansion pipe and the front end of the second expansion pipe are respectively provided with a cutting groove so as to divide the rear end of the first expansion pipe and the front end of the second expansion pipe into a plurality of blades, and the blades can be opened towards the outside of the expansion assembly;

the drive assembly, the drive assembly is including rotating piece and gasket, the front end that rotates the piece with the rear end butt of gasket, the gasket cover is located on the screw rod, rotate the piece with the screw rod is connected, is used for the drive the screw rod rotates, in order to drive first expansion pipe rotates and moves towards the second expansion pipe removes.

In some embodiments of this application, the anchor structure still includes the backstop subassembly, the backstop subassembly is including overlapping in proper order and locating first sleeve and second sleeve on the screw rod, first telescopic rear end with the telescopic front end butt of second, the telescopic rear end of second with the front end butt of gasket, first telescopic front end cover is located the rear end of second expansion pipe, first sleeve is provided with the backstop ring, the front end of backstop ring with the rear end butt of second expansion pipe.

In some embodiments of the present application, the rear end of the second expansion pipe is provided with a protruding ring, and the rear end of the protruding ring abuts against the front end of the first sleeve.

In some embodiments of the present application, the first sleeve is provided with a plurality of ribs, and the plurality of ribs are arranged at intervals along the circumferential direction of the first sleeve.

In some embodiments of the present application, the double-ended tapered tube has chip flutes formed thereon, and the chip flutes are located in the middle position of the double-ended tapered tube in the length direction.

In some embodiments of the present application, the end of the double-ended tapered tube is disposed obliquely toward the chip flutes in a direction away from the axial center thereof.

In some embodiments of the present application, the cutting groove is provided in a plurality, and the cutting grooves are provided in a plurality at intervals in a circumferential direction of the first expansion pipe and the second expansion pipe, respectively.

In some embodiments of the present application, the blade is provided with a plug portion for insertion into a hole wall of the mounting hole.

In some embodiments of the present application, the axis of the screw coincides with the axis of the expansion assembly and the drive assembly, respectively.

The present application also provides an expansion bolt comprising an anchoring structure as described above.

The embodiment of the utility model has the following advantages:

the application provides an anchor structure through the cover in proper order on the screw rod is equipped with first expansion pipe, double-end toper pipe and second expansion pipe, and first expansion pipe and second expansion pipe are worn to locate respectively at the both ends of double-end toper pipe to the transmission effort. Wherein, the grooving has been seted up respectively to first expansion pipe and second expansion pipe to cut apart into a plurality of blades with the rear end of first expansion pipe and the front end of second expansion pipe, a plurality of blades homoenergetic are opened towards expansion unit's outside, in order to insert the pore wall of mounting hole, realize firm the connection. It rotates to rotate a piece drive screw, can drive first expansion pipe and rotate and move towards the second expansion pipe to drive double-end toper pipe and remove towards the second expansion pipe, the second expansion pipe is static relatively, makes its blade prop by double-end toper pipe, and first expansion pipe takes place relative movement with double-end toper pipe, and its blade also is propped by double-end toper pipe, thereby inserts the pore wall of mounting hole, realizes firm the connection. The blades of the first expansion pipe and the second expansion pipe can be opened, double guarantee is achieved, connection stability and anti-pulling capacity are improved, and loosening probability is reduced. The technical problems that in the prior art, the expansion bolt is not firmly connected with a wall body, and the expansion bolt is easy to loosen when the load shakes greatly, so that safety accidents are caused are solved.

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible and comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 illustrates a perspective view of an anchoring structure in some embodiments of the present application;

FIG. 2 illustrates a schematic cross-sectional view of the anchoring structure in some embodiments of the present application;

FIG. 3 illustrates another perspective, schematic view of an anchoring structure in some embodiments of the present application;

FIG. 4 illustrates another schematic cross-sectional view of an anchoring structure in some embodiments of the present application;

FIG. 5 shows a schematic view of a first expansion tube of the anchoring arrangement in some embodiments of the present application;

FIG. 6 shows a schematic view of a second expansion tube of the anchoring arrangement in some embodiments of the present application;

FIG. 7 illustrates a schematic view of a first sleeve of the anchoring structure in some embodiments of the present application.

Description of the main element symbols:

100-an anchoring structure; 10-a screw; 101-external threads; 20-an expansion assembly; 201-a first expansion tube; 2011-internal threads; 202-a double-ended conical tube; 2021-chip flutes; 203-a second expansion tube; 2031-convex ring; 204-grooving; 205-blades; 2051-an insertion part; 30-a drive assembly; 301-a rotating member; 302-a shim; 40-a stop assembly; 401-a first sleeve; 4011-a stop ring; 4012-fins; 402-a second sleeve; 500-expansion bolt.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 4, an embodiment of the present application provides an anchoring structure 100 for anchoring in a mounting hole of a wall body, which is mainly applied to an expansion bolt 500. The anchoring structure 100 includes a screw 10, an expansion assembly 20, and a drive assembly 30.

Wherein the end of the screw 10 is provided with an external thread 101. Expansion assembly 20 is including overlapping in proper order and locating first expansion pipe 201, double-end conical tube 202 and second expansion pipe 203 on the screw rod 10, first expansion pipe 201 be provided with external screw thread 101 matched with internal thread 2011, the front end of double-end conical tube 202 is worn to locate the rear end of first expansion pipe 201, the rear end of double-end conical tube 202 is worn to locate the front end of second expansion pipe 203, the rear end of first expansion pipe 201 with the front end of second expansion pipe 203 has seted up grooving 204 respectively, with the rear end of first expansion pipe 201 with the front end of second expansion pipe 203 is cut apart into a plurality of blades 205, and is a plurality of blades 205 all can open towards expansion assembly 20's outside. The driving assembly 30 comprises a rotating piece 301 and a gasket 302, the front end of the rotating piece 301 is abutted to the rear end of the gasket 302, the gasket 302 is sleeved on the screw rod 10, the rotating piece 301 is connected with the screw rod 10 and used for driving the screw rod 10 to rotate so as to drive the first expansion pipe 201 to rotate and move towards the second expansion pipe 203.

The anchor structure 100 that this application embodiment provided, the tip of screw rod 10 is provided with external screw thread 101, and first expansion pipe 201 is provided with the internal thread 2011 with external screw thread 101 matched with to make first expansion pipe 201 and screw rod 10 threaded connection, thereby can drive first expansion pipe 201 and rotate and move towards second expansion pipe 203 when screw rod 10 rotates. The front end of the rotating member 301 abuts against the rear end of the spacer 302, the spacer 302 is sleeved on the screw rod 10, the front end of the spacer 302 abuts against the top wall of the mounting hole, and the outer diameter of the spacer 302 is larger than the aperture of the mounting hole. The rotating member 301 is connected to the screw 10 to drive the screw 10 to rotate, thereby rotating the first expansion pipe 201 and moving the first expansion pipe 203 toward the second expansion pipe 203.

The front end of the double-end conical pipe 202 penetrates through the rear end of the first expansion pipe 201, the rear end of the double-end conical pipe 202 penetrates through the front end of the second expansion pipe 203, and the end of the double-end conical pipe 202 is respectively abutted to the inner walls of the first expansion pipe 201 and the second expansion pipe 203 to achieve compact connection and transfer acting force. The rear end of the first expansion pipe 201 and the front end of the second expansion pipe 203 are respectively provided with a cutting groove 204 to divide the first expansion pipe 201 and the front end of the second expansion pipe 203 into a plurality of blades 205, so that the first expansion pipe 201 and the second expansion pipe 203 are easier to open, the plurality of blades 205 can be opened towards the outside of the expansion assembly 20 to be inserted into the hole wall of the installation hole, and the stable connection is realized, wherein the number of the blades 205 can be two.

Specifically, the rotating member 301 may be a nut or a bolt head. When the rotating member 301 is a nut, the nut is sleeved on the screw rod 10 and is in threaded connection with the screw rod 10, at this time, the external threads 101 are arranged at both ends of the screw rod 10, the anchoring structure 100 is inserted into the mounting hole in the wall during use, and the nut is screwed in towards the direction close to the expansion assembly 20, because the gasket 302 is abutted to the top wall of the mounting hole, the nut pulls the screw rod 10 outwards towards the wall, the outer diameter of the first expansion pipe 201 is smaller than the inner diameter of the mounting hole and is not in contact with the hole wall of the mounting hole, and no friction force is generated when the first expansion pipe is rotated relative to the screw rod 10. So that the first expansion pipe 201 rotates together with the screw 10 and moves towards the second expansion block, and then extrudes the double-head tapered pipe 202 and drives it to extrude the second expansion pipe 203, so that the blades 205 of the first expansion pipe 201 and the second expansion pipe 203 open towards the outside of the expansion assembly 20 to be inserted into the hole wall of the mounting hole, and stable connection is realized.

When the rotating member 301 is a bolt head, the bolt head is fixedly connected with the screw rod 10, the bolt head rotates to drive the screw rod 10 to rotate synchronously, and at the moment, only one end of the screw rod 10 far away from the bolt head is provided with an external thread 101 matched with the internal thread 2011 of the first expansion pipe 201. In use, the anchor structure 100 is inserted into a mounting hole in a wall and the bolt head is screwed in a direction towards the expansion assembly 20, and the screw 10 only rotates and does not move because the washer 302 abuts the top wall of the mounting hole. The outer diameter of the first expansion pipe 201 is slightly larger than the aperture of the installation hole to provide friction force for the first expansion pipe 201 to rotate relative to the screw 10, so as to drive the first expansion pipe 201 to rotate and move towards the second expansion pipe 203, further extrude the double-head tapered pipe 202 and drive the double-head tapered pipe to extrude the second expansion pipe 203, and enable the blades 205 of the first expansion pipe 201 and the second expansion pipe 203 to open towards the outside of the expansion assembly 20 to be inserted into the hole wall of the installation hole, so that stable connection is achieved.

The rotating part 301 drives the screw 10 to rotate, and can drive the first expansion pipe 201 to rotate and move towards the second expansion pipe 203, so as to drive the double-end tapered pipe 202 to move towards the second expansion pipe 203, the second expansion pipe 203 is relatively static, so that the blades 205 of the second expansion pipe are propped open by the double-end tapered pipe 202, the first expansion pipe 201 and the double-end tapered pipe 202 move relatively, the blades 205 of the first expansion pipe are propped open by the double-end tapered pipe 202, and the first expansion pipe and the second expansion pipe are inserted into the hole wall of the installation hole, so that stable connection is realized. The blades 205 of the first expansion pipe 201 and the second expansion pipe 203 can be opened, double guarantee is achieved, connection stability and anti-pulling capacity are improved, and loosening probability is reduced. The technical problems that in the prior art, the expansion bolt is not firmly connected with a wall body, and the expansion bolt is easy to loosen when the load shakes greatly, so that safety accidents are caused are solved.

As shown in fig. 2, 4 and 7, in an embodiment of the present application, optionally, the anchoring structure 100 further includes a stopping assembly 40, and the stopping assembly 40 includes a first sleeve 401 and a second sleeve 402 sequentially sleeved on the screw 10. The rear end of first sleeve 401 with the front end of second sleeve 402 butt, the rear end of second sleeve 402 with the front end butt of gasket 302, the front end cover of first sleeve 401 is located the rear end of second inflation pipe 203, first sleeve 401 is provided with backstop ring 4011, the front end of backstop ring 4011 with the rear end butt of second inflation pipe 203.

In this embodiment, the stopping assembly 40 includes a first sleeve 401 and a second sleeve 402 sequentially sleeved on the screw 10. The rear end of the first sleeve 401 abuts against the front end of the second sleeve 402, and the rear end of the second sleeve 402 abuts against the front end of the gasket 302. The front end of the first sleeve 401 is sleeved at the rear end of the second expansion pipe 203, and the first sleeve 401 is provided with a stop ring 4011 abutted against the rear end of the second expansion pipe 203 to prevent the second expansion pipe 203 from moving, so that the second expansion pipe is kept still under the thrust of the first expansion pipe 201 and the double-headed conical pipe 202, and therefore the double-headed conical pipe 202 can respectively prop open the blades 205 of the first expansion pipe 201 and the second expansion pipe 203, the blades 205 are inserted into the hole wall of the mounting hole, and the anchoring function is further realized.

As shown in fig. 2, 4 and 6, in the above embodiment of the present application, optionally, the rear end of the second expansion pipe 203 is provided with a convex ring 2031, and the rear end of the convex ring 2031 abuts against the front end of the first sleeve 401.

In this embodiment, the rear end of the second expansion pipe 203 is provided with a convex ring 2031, and the rear end of the convex ring 2031 abuts against the front end of the first sleeve 401. Specifically, the convex ring 2031 functions in concert with the stopper ring 4011 to prevent the second expansion pipe 203 from moving. By arranging the convex ring 2031, the front end surface of the first sleeve 401 can prevent the second expansion pipe 203 from moving, and the stopping effect is improved.

It should be noted that the pressure that can be withstood by the convex ring 2031 and the stop ring 4011 is limited, and when the pressure exceeds the limited pressure, the convex ring will be crushed, so that the second expansion pipe 203 can move towards the rear end, and therefore the double-ended conical pipe 202 and the first expansion pipe 201 integrally continue to move towards the second expansion pipe 203, and the blades 205 are further expanded towards the outside of the expansion assembly 20, so as to realize secondary expansion, and further improve the stability.

As shown in fig. 1, 3 and 7, in the above embodiment of the present application, optionally, a plurality of ribs 4012 are provided on the first sleeve 401, and the ribs 4012 are spaced apart from each other along the circumferential direction of the first sleeve 401.

In this embodiment, the first sleeve 401 is provided with a plurality of ribs 4012, and the plurality of ribs 4012 are spaced apart from each other along the circumference of the first sleeve 401. Wherein, the pore wall interference fit of first bead 4012 and mounting hole for first sleeve 401 can not take place to rotate, in order to offset out the produced axial rotation power of screw rod 10 rotation and frictional force, avoids it to rotate along with screw rod 10, thereby avoids second inflation pipe 203 and double-end conical tube 202 to rotate along with screw rod 10, and first bead 4012 also plays the locking effect. Specifically, the first protruding ridges 4012 may be provided in one or two, so as to achieve the locking effect, which is not illustrated herein.

As shown in fig. 2 and 4, in an embodiment of the present application, optionally, the double-ended tapered tube 202 is provided with chip flutes 2021, and the chip flutes 2021 are located at the middle position in the length direction of the double-ended tapered tube 202.

In this embodiment, the double-ended tapered tube 202 is provided with chip pockets 2021, and the chip pockets 2021 are located at the middle position in the longitudinal direction of the double-ended tapered tube 202. The chip groove 2021 is used for accommodating chips generated by opening the blade 205 and inserting the blade 205 into the wall of the mounting hole of the wall, collecting chips generated by cutting the first expansion pipe 201 and the second expansion pipe 203, and preventing the blade 205 from being incapable of continuously cutting due to blockage caused by the chips.

In the above-described embodiment of the present application, as shown in fig. 2 and 4, alternatively, the end of the double-ended tapered tube 202 is disposed obliquely toward the chip pocket 2021 in a direction away from the axial center thereof.

In this embodiment, the end of the double-ended tapered tube 202 is inclined toward the chip pocket 2021 along the direction away from the axis of the double-ended tapered tube 202, so that the two ends of the double-ended tapered tube 202 form slope surfaces respectively, and the cross-sectional area of the double-ended tapered tube 202 gradually increases from small to large in the length direction and then gradually decreases from large to small. Therefore, when the double-end conical pipe 202 moves towards the second expansion pipe 203, the blades 205 of the second expansion pipe 203 can be unfolded, and when the first expansion pipe 201 moves relative to the double-end conical pipe 202, the blades 205 can be unfolded by the double-end conical pipe 202, so that the blades can be inserted into the hole wall of the mounting hole, and the stable connection can be realized.

Specifically, the end of the double-ended tapered tube 202 may be inclined at an angle of between 30 and 60 degrees. When the inclination angle is 30 degrees, the slope is relatively gentle, the opening angle of the blade 205 is relatively small, and the hole wall inserted into the mounting hole is shallow. When the angle of inclination is 45 degrees, the slope is relatively moderate, and the angle of opening of the blades 205 is relatively moderate. When the inclination angle is 60 degrees, the slope is relatively steep, the opening angle of the blade 205 is relatively large, the hole wall inserted into the mounting hole is deep, and the connection is stable.

As shown in fig. 5 and 6, in an embodiment of the present application, optionally, the cutting groove 204 is provided in a plurality, and the cutting grooves 204 are provided in a plurality at intervals in the circumferential direction of the first expansion pipe 201 and the second expansion pipe 203, respectively.

In the present embodiment, the cutting grooves 204 are provided in plural numbers, and the plural cutting grooves 204 are provided at intervals in the circumferential direction of the first expansion pipe 201 and the second expansion pipe 203, respectively. Wherein the cutting grooves 204 are provided in plurality so that the first expansion pipe 201 and the second expansion pipe 203 are divided into a plurality of blades 205, facilitating insertion of the blades 205 into the hole wall of the installation hole.

Specifically, the shape of the cutting groove 204 is a combination of a straight line for dividing the cutting groove into a plurality of blades 205 and a circular line having a groove width consistent with that of the straight line, so as to retain a circular plate, provide more support force for the first expansion pipe 201 and the second expansion pipe 203, and prevent debris and dust generated by the wall body base material from falling into the first expansion pipe 201 and the second expansion pipe 203 during the operation. Of course, the slots 204 may be one or two, and the opening of the blades 205 can also be realized, which is not illustrated here.

As shown in fig. 5 and 6, in an embodiment of the present application, optionally, the blade 205 is provided with a plug portion 2051, and the plug portion 2051 is used for being inserted into a hole wall of the mounting hole.

In the present embodiment, the blade 205 is provided with an insertion portion 2051 for insertion into a hole wall of the mounting hole. Wherein the insertion part 2051 has a sharp portion so that it is easily inserted into the hole wall of the installation hole, thereby achieving a stable connection.

Specifically, the sharp portion will be abraded by friction when cutting into the wall substrate, and the sharp portion can automatically maintain acute cutting because the tapered portion of the double-ended tapered tube 202 causes different opening angles during the opening process of the blades 205. When the screw 10 is subjected to external pulling force, the blades 205 of the first expansion pipe 201 can be completely opened, so that the umbrella-shaped opening is realized, the sharp-pointed parts are further inserted into the hole wall of the mounting hole of the wall body, the re-expansion is realized, the excellent anchoring effect is continuously kept, the pulling resistance and the stability are improved, and the loosening probability is reduced.

The blades 205 of the first expansion tube 201 are provided with a double layer to make the blades 205 easier to cut the substrate and to make the splay limit greater when the blades 205 are expanded or re-expanded a second time. The blades 205 of the second expansion pipe 203 are provided with protrusions, so that the cutting force is more concentrated, and the cutting force of the blades 205 is enhanced. Of course, the blades 205 of the first expansion pipe 201 may be arranged in one layer, three layers or more, which is not illustrated here.

As shown in fig. 2 and 4, in one embodiment of the present application, optionally, the axis of the screw 10 coincides with the axis of the expansion assembly 20 and the driving assembly 30, respectively.

In this embodiment, the axis of the screw 10 coincides with the axes of the expansion assembly 20 and the driving assembly 30, so as to realize the concentric arrangement of the screw 10, the expansion assembly 20 and the driving assembly 30, and avoid the influence on the anchoring caused by eccentricity.

The embodiment of the present application also provides an expansion bolt 500 including the anchoring structure 100 in the above embodiment.

The expansion bolt 500 has the anchoring structure 100 of any of the above embodiments, so that the overall beneficial effects of the anchoring structure 100 are not described herein.

To sum up, the anchor structure that this application provided is equipped with first expansion pipe, double-end toper pipe and second expansion pipe through the cover in proper order on the screw rod, and first expansion pipe and second expansion pipe are worn to locate respectively at the both ends of double-end toper pipe to the transmission effort. Wherein, the grooving has been seted up respectively to first expansion pipe and second expansion pipe to cut apart into a plurality of blades with the rear end of first expansion pipe and the front end of second expansion pipe, a plurality of blades homoenergetic are opened towards expansion unit's outside, in order to insert the pore wall of mounting hole, realize firm the connection. It rotates to rotate a piece drive screw, can drive first expansion pipe and rotate and move towards the second expansion pipe to drive double-end toper pipe and remove towards the second expansion pipe, the second expansion pipe is static relatively, makes its blade prop by double-end toper pipe, and first expansion pipe takes place relative movement with double-end toper pipe, and its blade also is propped by double-end toper pipe, thereby inserts the pore wall of mounting hole, realizes firm the connection. The blades of the first expansion pipe and the second expansion pipe can be opened, double guarantee is achieved, the connection stability and the anti-pulling capacity are improved, and the loosening probability is reduced. The technical problems that in the prior art, the expansion bolt is not firmly connected with a wall body, and the expansion bolt is easy to loosen when the load shakes greatly, so that safety accidents are caused are solved.

In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

The above examples are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims (10)

1. An anchoring structure for anchoring in a mounting hole of a wall, comprising:

the end part of the screw rod is provided with an external thread;

the expansion assembly comprises a first expansion pipe, a double-end conical pipe and a second expansion pipe which are sequentially sleeved on the screw rod, the first expansion pipe is provided with an internal thread matched with the external thread, the front end of the double-end conical pipe penetrates through the rear end of the first expansion pipe, the rear end of the double-end conical pipe penetrates through the front end of the second expansion pipe, the rear end of the first expansion pipe and the front end of the second expansion pipe are respectively provided with a cutting groove so as to divide the rear end of the first expansion pipe and the front end of the second expansion pipe into a plurality of blades, and the blades can be opened towards the outside of the expansion assembly;

the drive assembly, the drive assembly is including rotating piece and gasket, the front end that rotates the piece with the rear end butt of gasket, the gasket cover is located on the screw rod, rotate the piece with the screw rod is connected, is used for the drive the screw rod rotates, in order to drive first expansion pipe rotates and moves towards the second expansion pipe removes.

2. The anchoring structure of claim 1, further comprising a stopping assembly, wherein the stopping assembly comprises a first sleeve and a second sleeve which are sequentially sleeved on the screw, the rear end of the first sleeve is abutted with the front end of the second sleeve, the rear end of the second sleeve is abutted with the front end of the gasket, the front end of the first sleeve is sleeved on the rear end of the second expansion pipe, the first sleeve is provided with a stopping ring, and the front end of the stopping ring is abutted with the rear end of the second expansion pipe.

3. The anchoring structure according to claim 2, wherein a rear end of the second expansion pipe is provided with a convex ring, a rear end of which abuts against a front end of the first sleeve.

4. The anchoring structure as in claim 2, wherein said first sleeve has a plurality of ribs disposed thereon, said plurality of ribs being spaced circumferentially about said first sleeve.

5. The anchoring structure as claimed in claim 1, wherein said double-ended tapered tube is provided with chip flutes, said chip flutes being located at a middle position in a length direction of said double-ended tapered tube.

6. The anchoring structure as recited in claim 5, wherein ends of the double-ended tapered tube are disposed obliquely toward the chip flutes in a direction away from an axial center thereof.

7. The anchoring structure as recited in claim 1, wherein the cutting groove is provided in plural numbers, the plural numbers being provided at intervals in a circumferential direction of the first expansion pipe and the second expansion pipe, respectively.

8. The anchoring structure as claimed in claim 1, wherein said blade is provided with a plug portion for insertion into a wall of said mounting hole.

9. The anchoring structure as in claim 1, wherein the axis of the screw coincides with the axis of the expansion assembly and the drive assembly, respectively.

10. An expansion bolt comprising an anchoring structure according to any one of claims 1 to 9.

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