CN119122899A

CN119122899A - An expansion device

Info

Publication number: CN119122899A
Application number: CN202411558901.2A
Authority: CN
Inventors: 李诗全; 陈小珍
Original assignee: Fuzhou Baiyibaili Automation Technology Co ltd
Current assignee: Fuzhou Baiyibaili Automation Technology Co ltd
Priority date: 2024-11-04
Filing date: 2024-11-04
Publication date: 2024-12-13

Abstract

The invention discloses an expansion device, wherein a shrinkage and expansion device is arranged on a sleeve or/and at the tail end of the sleeve, when the shrinkage and expansion device is a groove strip or/and a strip, the groove strip or/and the strip is/are extension of the sleeve, the sleeve and the groove strip or/and the strip are in one of threaded connection, integral forming, clamping connection or hinging, the groove strip is V-shaped, U-shaped or W-shaped, the strip is in a shape, the groove strip or/and the strip are provided with fillers, when the shrinkage and expansion device is a shrinkage and expansion strip, the same is true, the wall of the sleeve is provided with textures, and the expansion device is used for enabling a spiral piece to enter the shrinkage and expansion device through knocking or screwing, and when the spiral piece enters or passes through the shrinkage and expansion device, the shrinkage and expansion device expands. Through the setting of contracting and expanding device, not only can dispose in a flexible way, can also be through specific connected mode and sleeve zonulae occludens, ensured the wholeness and the stability of device. The expansion device can uniformly and effectively disperse pressure under the action of external force, so that the compression resistance and the service life of the expansion device are improved.

Description

Expansion device

Technical Field

The invention relates to the technical field of expansion bolts, in particular to an expansion device.

Background

In the prior engineering technical field, the expansion device is used as a key fastener, and the main function of the expansion device is to realize self expansion in the installation process through a specific mechanism, so that the expansion device is tightly fixed in a preset hole, and the connection strength and stability are enhanced. In construction engineering and daily maintenance, various objects are often required to be firmly fixed on a wall body, the ground or other structures, the traditional expansion device has some limitations in design and application, particularly the expansion opening is not large enough in the use process, the drawing force on porous bricks and aerated bricks cannot achieve ideal effects, and the ideal fastening effect is difficult to achieve in complex and changeable installation environments. In addition, traditional telescopic design often neglects the consideration to installation convenience and adaptability, can't fully satisfy diversified installation demand, for example, expansion structure can't use with the nail cooperation, also can use with self-tapping screw cooperation, and the urgent need is developed more convenient product.

There are also some drawbacks to the design and material selection of existing expansion devices. For example, the structure of the expansion part is single, and the expansion part cannot meet the fixing requirements of different materials and shapes, and the selection of the filler is limited, so that the expansion part is difficult to meet the use requirements under various environments or various walls.

In summary, the market is in urgent need of an anchoring product which is used in the same environment, especially on weak walls such as aerated bricks and porous bricks, can effectively improve the drawing force, has more reasonable expansion performance design and more convenient and flexible thread anastomosis or engagement performance.

Disclosure of Invention

In view of the above problems, the application provides an expansion device, which can effectively improve the drawing force, and is an anchoring product with more reasonable expansion performance design, more convenient thread anastomosis or occlusion performance and flexibility.

To achieve the above object, the present application provides an expansion device comprising a sleeve;

a shrinkage and expansion device is arranged on the sleeve or/and at the tail end of the sleeve;

When the expansion device is provided with one or two or more expansion strips, the sleeve is provided with one or two or more expansion strips on the wall of the sleeve, and when the expansion strips are provided with a plurality of expansion strips, the expansion strips are arranged in a single-layer or multi-layer mode; the sleeve and the expansion strip are integrally formed, connected in a clamping manner or hinged, the sleeve is provided with a slotted hole for expanding and contracting the expansion strip, the slotted hole is a slot or a hole, the expansion strip is U-shaped, V-shaped, W-shaped or in a straight shape, the expansion strip is provided with a filler, and the filler is one or more of metal materials, plastic materials, wood-bamboo materials, nylon materials, chemical rubber tubes, carbonized wood-bamboo and fibers;

And/or when the contraction and expansion device is provided with one or two or more groove strips or/and strips, the groove strips or/and strips are arranged at the tail end of the sleeve to extend, the sleeve and the groove strips or/and the strips are in one of threaded connection, integral forming, clamping connection or hinging, the groove strips are V-shaped or U-shaped or W-shaped, the strips are in a straight shape, the groove strips or/and the strips are provided with fillers, and the fillers are one or more of metal materials, plastic materials, wood-bamboo materials, nylon materials, chemical rubber tubes, carbonized wood-bamboo and fibers;

The sleeve wall is provided with through hole threads or/and pressing threads or/and internal threads or/and threads generated by internal snap marks or/and through hole threads or/and pressing threads or/and internal threads or/and nailing threads or/and threads generated by internal snap marks; the expansion device is used for enabling the screw to enter the screw thread to the contraction and expansion device through knocking or screwing, and the contraction and expansion device expands when the screw enters or passes through the contraction and expansion device.

In the technical scheme of the embodiment of the application, the screw threads arranged on the sleeve wall and one or more screw threads arranged on the expansion device are combined to generate combined screw threads, when the expansion device is provided with one or more expansion strips, the screw threads arranged on the sleeve are ring-shaped or/and spiral or/and lattice-type screw threads or/and inner clamping point threads arranged on the sleeve at the longitudinal periphery of the expansion strips;

The sleeve is provided with a slot hole for the expansion and contraction of the expansion and contraction strips, the slot hole is a slot or/and a hole, any side or any point of the slot hole is fixedly connected or integrally connected with the expansion and contraction strips, and the slot hole is connected with one or two or more expansion and contraction strips which are arranged oppositely when the expansion and contraction strips are arranged into two strips.

In the technical scheme of the embodiment of the application, the expansion device is combined with a screw, and one end of the screw is one of a bolt, a screw, a pointed nail, a sheep head nail, a hanging hook nail, a spherical joint, a clamping nail, a positioning nail, a four-corner pressing nail and a pipe clamp;

The other end of the screw piece is matched with the expansion device, namely, one end of the screw piece is a bolt or a screw, or a self-tapping screw, or a barbed nail or a spike, and the screw piece and the expansion device enter the expansion device through screwing or knocking until the expansion device expands.

In the technical scheme of the embodiment of the application, one end of the groove strip or/and the strip, which is far away from the sleeve, is in threaded connection or integrated formation or clip connection or hinge connection, or one end of the expansion strip or/and the expansion strip, which is far away from the sleeve, is provided with a baffle.

In the technical scheme of the embodiment of the application, the back pressing strip is arranged at the tail end of the baffle plate and is pressed on the V-shaped or U-shaped or W-shaped groove strip or the expansion strip or the straight strip or the expansion strip, and the back pressing strip is used for fixing the filler or/and serving as the filler to increase the expansion arc degree.

In the technical scheme of the embodiment of the application, one or more of through hole patterns, thread pressing patterns, tooth patterns, nail striking patterns, thorn patterns, fish scale patterns and inner clamping point patterns are arranged on the scaling expansion strips or/and the groove strips or/and the batten.

The edge of the expansion strip, the groove strip and the strip is in barb reverse hook arrangement, tooth arrangement, concave-convex arrangement, flat edge arrangement or wavy arrangement, when the expansion strip, the groove strip and the strip are in barb reverse hook arrangement, the expansion strip, the groove strip and the strip are started to have barb action when entering the anchor hole, and when the screw piece enters, the expansion strip, the groove strip and the strip are meshed with the wall of the corresponding anchor hole to improve the drawing force.

In the technical scheme of the embodiment of the application, when a plurality of expansion strips are arranged, the expansion strips are arranged in a single layer or multiple layers;

When the expansion strips are two, four or six and are designed as a single layer, the expansion strips are symmetrically distributed; when the expansion strip is three or five or seven and is designed as a single layer, the expansion strip is arranged in a triangle, pentagon or heptagon form;

when the expansion strips are multi-layered, and each layer is two or three or four or five or six or seven or more expansion strips, the expansion strips of each layer are staggered or arranged side by side in azimuth.

In the technical scheme of the embodiment of the application, the nailing lines or and the thorn lines or and the scale marks or and the pressing threads or and the tooth lines or and the through hole lines or and the inner clamping point lines are arranged on the groove strips or/and the battens or/and the scale expansion strips, and when the double-sided arrangement can increase the thickness of the groove strips or the battens or the scale expansion strips to increase the expansion opening degree in application;

the expansion strips are arranged symmetrically or in a propping way, and are arranged in a meshed mode, wherein the meshed mode is point-type meshed or wave-type meshed or any other meshed combination.

In the technical scheme of the embodiment of the application, the expansion strip is protruded or flush with the slot surface of the expansion strip or is positioned in the slot corresponding to the expansion strip.

In the technical scheme of the embodiment of the application, one end of the spiral piece, which is connected with one expansion device, is provided with a barb, the spiral piece is aligned with a sleeve opening to be knocked into the one expansion device until the expansion device is expanded, the barb starts to reverse hook positioning action after entering the expansion device, and the expansion device is provided with one or a plurality of combinations of inner threads, nail threads, thorn threads, embossments, through hole threads, screw threads and inner clamping point threads which are clamped or hooked with the barb. When the multiple combinations are arranged in an overlapped mode, the overlapped combination is formed in a mode that the internal threads, the embossments or the threads are provided with nailing threads, or/and thorn threads, or/and internal clamping point threads.

The nail-striking pattern is one or more of round dot shape, straight line shape, triangle shape, pentagon shape, wave shape, plum blossom shape and the like, or is set into any shape, the nail-striking pattern is combined with the thread or the tooth groove corresponding to the screw-in screw, when the screw-in screw of the screw-in member enters or strikes and the tooth tip and the nail-striking pattern are in extrusion state, the limited space of the shrinkage and expansion device can be expanded to the maximum, and the nail-striking pattern is penetrating or not used for penetrating.

In the technical scheme of the embodiment of the application, an inner clamping point setting port is arranged on the sleeve wall or the shrinkage and expansion device, the inner clamping point patterns are arranged on the sleeve or the shrinkage and expansion device, one or more inner clamping point patterns are arranged on the inner clamping point setting port, and the inner clamping point patterns are arranged around the inner clamping point setting port or on any one side or more than one side of the inner clamping point setting port;

When the inner clamping point lines are downwards arranged, namely, the side facing the anchor holes, the inner clamping points are vertically arranged, obliquely arranged or inwards bent.

When the inner clamping point setting ports are arranged on the sleeve ports in a notch shape, and when a plurality of notch-shaped inner clamping point setting ports are arranged oppositely or in a multi-angle shape, the notch array formed by combination is used as a spiral port spiral point.

The inner clamping point setting opening is quadrilateral or notch-shaped (notch-shaped) or any other shape.

According to the technical scheme, one end of the expansion device provided with the expansion strip is aligned with a preset anchor hole, the expansion device is implanted into the anchor hole through knocking or screwing, one end of the screw piece matched with the expansion device is aligned with the expansion device implanted into the anchor hole and exposed on the sleeve opening of the hole, and the screw piece is locked or pressed and fixed through screwing or knocking until the expansion device expands.

In the technical scheme of the embodiment of the application, one end of the groove strip or/and the expansion strip connected with the sleeve is arranged in an L shape with one end provided with a baffle, or the groove strip or/and the expansion strip connected with the sleeve is arranged in a local inclined manner or in a head-tail inclined manner, the head end is one end of the groove strip or/and the strip connected with the sleeve, and the tail end is one end provided with the baffle. When the groove strip or/and the batten or/and the zooming expansion strip are arranged oppositely, the bottoms of the groove strip or/and the batten or/and the zooming expansion strip are in abutting or biting arrangement.

In the technical scheme of the embodiment of the application, the filler comprises an inner filler and an outer filler, wherein the groove strip or/and the expansion strip is provided with the outer filler, one end of the expansion device close to the sleeve or/and the sleeve is internally provided with the inner filler,

The internal filler is one or more of wood stick, bamboo stick, fiber, plastic, nylon, foam, sealant, foam glue, joint mixture and the like.

The external filler and the groove strips or/and the battens or/and the expansion strips are fixed in a clamping mode or/and a glue mode or/and a nail mode.

According to the technical scheme, the materials of the external fillers are arranged according to different application matrixes, the matrixes are any one of a mixed mud wall, a solid red brick wall, a porous red brick wall, an aerated brick wall and a rock, the external fillers in the anchor holes taking the mixed mud wall and the rock as the matrixes are arranged in a combined mode to be easy to deform or have larger deformation degree, and the external fillers in the anchor holes taking the solid red brick wall, the porous red brick wall and the aerated brick wall as the matrixes are arranged in a combined mode to be difficult to deform or have no deformation.

Has the following beneficial effects:

1. an expansion device is provided, wherein the inner clamping point lines are arranged towards the tail end, namely towards one end of an anchor hole, and are provided with pressing sheets with screw thread action, and when screws are screwed into pressing sheet sleeves, the pressing sheets are reversely hooked, so that the expansion device is not easy to fall off.

2. An expansion device can be arranged at any sleeve position, and the expansion device can achieve the effect of expansion at any position, so that the expansion device is more suitable for real life application scenes.

3. An expansion device is provided with expansion blocks or expansion objects, so that anchor holes used correspondingly are full, the expansion device is expanded, and the tensile pulling force of the expansion device is improved.

4. The expansion device can use screws and nails, greatly improves the application range, and can also show different functions according to different external structures of the nails, such as bolts, screws, pointed nails, sheep head nails, hook nails, spherical joints, clamping nails, positioning nails, four-corner pressing nails, pipe clamps and the like, thereby providing more choices and convenience for users, and particularly having better anchoring effect on aerated bricks and porous bricks;

5. the expansion device combines the structural adhesive or/and the bar planting adhesive or/and the adhesive so that the use effect is better, and the combination of the structural adhesive or/and the bar planting adhesive or/and the adhesive can enable the saturation degree of the adhesive in the anchor hole to be more full. For example, the expansion device is provided with glue, but in order to make the glue in the anchor holes more solid, the user can implant the bar-planting glue in advance, so that the combined use effect is better, and the wall is especially a weak wall body such as an aerated brick and a porous sub-brick.

6. The expansion device is characterized in that the tail ends of the expansion strips are expanded from deep to shallow by arranging the thread meshing lines on the expansion strips, the groove strips and the battens, so that the clamping effect is better.

7. An expansion device is characterized in that positive and negative nail striking patterns are arranged on a zooming expansion strip, so that the zooming expansion strip is thicker, a screw is screwed into the nail striking patterns to be sucked into the wall of an anchor hole, and the drawing resistance is increased.

8. The screw threads arranged on the sleeve and the screw threads arranged on the shrinkage and expansion device enable the gripping force of the screw after the screw enters to be more stable, and particularly the effect is better due to the arrangement of the inner clamping point threads.

9. The expansion device is complicated to look at, but the core functional structure can be produced by die type stamping production and automatic line production, so that the production cost can be reduced, and the expansion device is low in cost and convenient to popularize and apply.

10. The expansion device is generally arranged in the area from the front one third to the front three quarters, and the rear end, namely the sleeve opening, is always larger than the screw body of the screw element, so that the screw element does not have a grip area and a balance stable point at the sleeve opening, and the grip force of the screw element entering the expansion device is far insufficient only by means of expanding and contracting the expansion strips or/and the groove strips or/and the screw threads on the strip strips, so that the inner clamping point grains are arranged at the sleeve opening, the balance stability of the screw element can be improved, the grip force area is increased, and the drawing force and the safety performance are improved from the surface.

11. The inside of the expansion device is provided with a filler, the inside filler is one or more of wood sticks, bamboo sticks, fibers, plastics, nylon, foam, sealant, foam glue, joint filling agent and the like, so that the gripping force is improved, the air inflow is reduced or the air inflow is stopped, the expansion device is prevented from being corroded or delayed or/and rusted, and the durability of the product is improved.

Finally, the sleeve wall is provided with structures such as through hole patterns, screw threads generated by pressing threads or internal threads, and the like, so that the screw is convenient to enter and fix, and the connecting force and the friction force between the expansion device and the surrounding environment are enhanced. When the screw is screwed in, the shrinkage and expansion device can be extruded to expand, and the expansion effect not only increases the contact area with the surrounding environment, but also further improves the fixing effect and stability of the device.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:

FIG. 1 illustrates a pointed pin according to an embodiment;

FIG. 2 illustrates a staple according to an embodiment;

FIG. 3 illustrates a sheep stud according to an embodiment;

FIG. 4 illustrates a bolt according to an embodiment;

FIG. 5 illustrates a staple according to an embodiment;

FIG. 6 illustrates a hook nail according to an embodiment;

FIG. 7 illustrates a ball joint according to an embodiment;

FIG. 8 is a schematic diagram of a channel strip and slat according to an embodiment;

FIG. 9 is a front view of a sleeve and inflation device according to an embodiment;

FIG. 10 is an isometric view of a sleeve and a telescoping device according to an embodiment;

FIG. 11 is a diagram of an internal snap set port according to an embodiment;

FIG. 12 is a block diagram of an embodiment of a solid sleeve;

FIG. 13 is a diagram of an inner snap point structure according to an embodiment;

FIG. 14 is a cross-sectional view of the packing and the collapsing apparatus of the embodiment;

FIG. 15 is a block diagram of a baffle and back pressure bar according to an embodiment;

FIG. 16 is a block diagram of a screw, sleeve, telescoping device and wall according to one embodiment;

FIG. 17 is a diagram of a screw and sleeve structure according to an embodiment;

FIG. 18 is a view showing a structure of a nailing line arranged on the inner side of the groove strip according to the embodiment;

Fig. 19 is a structure diagram of nailing lines on two sides of the expansion device in the specific embodiment.

Reference numerals illustrate:

10. sleeve, 20 parts of a shrinkage and expansion device, 30 parts of a filler, 40 parts of a screw, 50 parts of a baffle, 60 parts of a back pressure strip, 70 parts of an inner clamping point line;

11. An inner stuck point setting port;

21. expansion strip, 22, groove strip, 23, lath;

41. Pointed nails, 42, staples, 43, sheep head nails, 44, bolts, 45, positioning nails, 46, hook nails, 47, spherical joints, 48, nail striking lines, 49 and through hole lines.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

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 terms used herein are for the purpose of describing particular embodiments only and are not intended to be limiting of the application, and the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the above description of the drawings are intended to cover non-exclusive inclusions.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiment of the present application, the term "and/or" is merely an association relationship describing the association object, and indicates that three relationships may exist, for example, a and/or B, and may indicate that a exists alone, while a and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "fixed" and the like are to be construed broadly and include, for example, fixed connection, detachable connection, or integral therewith, mechanical connection, electrical connection, direct connection, indirect connection via an intermediary, communication between two elements, or interaction between two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

Referring to fig. 1 to 18, the present invention discloses an expansion device, comprising a sleeve 10;

the sleeve 10 and/or the tail end of the sleeve 10 are/is provided with a shrinking and expanding device 20, wherein the number of the shrinking and expanding device 20 is one or more;

When the expansion device 20 is a groove strip 22 or/and a slat 23, the groove strip 22 or/and the slat 23 is arranged at the tail end of the sleeve 10 to extend, the sleeve 10 and the groove strip 22 or/and the slat 23 are in one of threaded connection, integral molding, clamping connection or hinging, the groove strip 22 is V-shaped or U-shaped or W-shaped, the slat 23 is in a shape of a line, the groove strip 22 or/and the slat 23 are provided with a filler 30, and the filler 30 is one or more of metal materials, plastic materials, wood-bamboo materials, nylon materials, chemical rubber tubes, carbonized wood-bamboo and fibers;

And/or, when the shrinking and expanding device 20 is a shrinking and expanding strip 21, one or more shrinking and expanding strips 21 are arranged on the sleeve 10 or on the wall of the sleeve 10, when the shrinking and expanding strip 21 is provided with a plurality of strips, the shrinking and expanding strip 21 is arranged in a single layer or a plurality of layers, the sleeve 10 and the shrinking and expanding strip 21 are integrally formed, connected in a clamping mode or hinged, the sleeve 10 is provided with a slot hole for shrinking and expanding the shrinking and expanding strip 21, the slot hole is a slot or/and a hole, the shrinking and expanding strip 21 is U-shaped, V-shaped, W-shaped or in a shape, the shrinking and expanding strip 21 is provided with a filler 30, the filler 30 is one or more of a metal material, a plastic material, a wood bamboo material, a nylon material, a chemical rubber tube, a carbonized wood bamboo and a fiber, and the shrinking and expanding strip is partially or completely in the slot hole before being used.

The wall of the sleeve 10 is provided with through holes 49 or/and press threads or/and internal clamping threads 70, namely threads formed by one or more combinations, or/and through holes 49 or/and press threads or/and internal clamping threads 70 arranged on one or more expansion devices 20, namely threads formed by one or more combinations, and the expansion device is used for allowing a screw element 40 to enter the threads to the expansion device 20 through knocking or screwing, and the expansion device 20 expands when the screw element 40 enters or passes through the expansion device 20.

The sleeve 10 may be designed and manufactured according to practical requirements, and the material may be metal, plastic, composite material, etc., and the specific choice depends on the application scenario and the required strength, corrosion resistance, etc.

The sleeve 10 is provided with an inner-shaped screw or an outer-shaped screw or a notch-shaped screw, the purpose of the screw is to match with a chemical rubber pipe, the chemical rubber pipe is stirred through screw-in, so that the chemical rubber pipe is glued after chemical uniform reaction, of course, if glue which is not required to be stirred or is stirred is used, the sleeve can be provided with no inner-shaped screw or outer-shaped screw or notch-shaped screw, but if the glue is arranged, the use is not influenced;

The internal screw or the external screw is polygonal, or is in the shape of a lace or a notch, wherein the polygon is one of triangle, quadrangle, pentagon, hexagon and polygon, the lace is one of three-arc, four-arc, five-arc, six-arc and polygon, and the notch is one of double-mouth one-line arrangement, three-mouth, four-mouth, five-mouth, six-mouth and multiple-mouth.

The cross section of the sleeve 10 is triangular, quadrangular, pentagonal, hexagonal, circular, quincuncial, or any shape that does not affect the use.

The expansion device 20 is one or more sections, and the expansion device 20 is arranged at the tail part of the sleeve and on the sleeve.

On the sleeve 10 and/or at its tail end, said collapsing means 20 are provided, said collapsing means 20 being adapted to perform an expanding function. The expansion device 20 may be one or more, and is configured according to actual needs. The particular form of the collapsing device 20 is produced at least by two or more channel strips 22 or/and slats 23 or/and the collapsing expansion strips 21. Further, a plurality of the collapsing means 20 may be arranged in an annular array around the central axis of the sleeve 10, so that when expanded, the collapsing means 20 expand circumferentially.

When the expansion device 20 is a groove strip 22 or a slat 23, the groove strip 22 and the slat 23 are extension parts of the sleeve 10, specifically, the groove strip 22 and the slat 23 are disposed at the end of the sleeve 10, and the groove strip 22 and the slat 23 are connected with the end of the sleeve 10. The channel 22 and the strip 23 are connected to the sleeve 10 by means of a screw connection, an integral formation, a snap connection or a hinge connection. The cross section of the groove strip 22 can be V-shaped, U-shaped or W-shaped, and the cross section of the batten 23 is in a straight shape. The filler 30 may be disposed on the groove strip 22 and the batten 23, and the filler 30 may be selected from a wide range of materials including metal materials, plastic materials, wood-bamboo materials, nylon materials, chemical rubber tubes, carbonized wood-bamboo, fibers, etc., which may be selected and combined according to specific requirements. Further, the filler 30 may be disposed on a side of the channel 22 and the slat 23 that is closer to the centerline of the sleeve 10 and/or a side that is farther from the centerline, and preferably, the filler 30 is disposed on a side of the channel 22 and the slat 23 that is farther from the centerline of the sleeve 10.

The side wall of the sleeve 10 is provided with an inner clamping point setting opening 11 in a penetrating manner, inner clamping point patterns 70 are arranged around the inner clamping point setting opening 11 and inside the sleeve 10, and the inner clamping point patterns 70 are used for improving the connection strength or clamping strength between the screw 40 and the sleeve 10. In use, the screw member 40 is threaded or snap-fit into the sleeve 10 with the internal snap-fit threads 70. Further, the inner click point setting port 11 is preferably a square through hole, and the inner click point setting port 11 and the inner click point pattern 70 are formed by punching.

In use, the screw member 40 is threaded or knocked into or through to the channel 22 and/or slat 23, the channel 22 and slat 23 expanding outwardly to effect expansion.

When the expansion device 20 is the expansion strip 21, the expansion strip 21 is disposed on a side wall of the sleeve 10, specifically, a slot hole for accommodating the expansion strip 21 is disposed on the sleeve 10, the expansion strip 21 is adapted to the slot hole, the expansion strip 21 is disposed in the slot hole, and the expansion strip 21 is connected to one side edge of the slot hole. The screw member 40 is screwed or knocked into or through the expansion and contraction bar, and the expansion and contraction bar expands outwards of the corresponding slot hole, and the slot hole can be groove-shaped or hole-shaped. The shape of the expansion strip 21 may also be U-shaped, V-shaped, W-shaped or in-line, and the filler 30 may be provided as well.

It should be further noted that the expansion strip 21 is a strip, and the expansion strip 21 and the sleeve 10 may be integrally formed, connected in a clamping manner, or hinged.

May be one or more, and may be provided as a single layer or multiple layers as desired.

In addition, the wall of the sleeve 10 is provided with one or more of through hole patterns 49, press threads, internal threads and internal snap point patterns, which are designed to make the screw 40 more stable after entering. At the same time, these designs may also be applied to one or more of the expansion devices 20 to enhance their expansion and fixation, to achieve better engagement, to increase pull-out forces, and to dead-lock the screw member so that it is not easily dislodged. Specifically, when the screw member 40 is screwed into or through the through hole pattern 49 or/and the press thread or/and the screw thread or/and the inner snap-fit pattern, the contact area between the screw member 40 and the sleeve 10 and/or the expansion device 20 is increased, which is safer and more secure.

In use, the screw 40 (e.g., a screw) is driven into the screw on the sleeve 10 by a striking or screwing manner. As the screw member 40 enters or passes through the collapsing apparatus 20, the collapsing apparatus 20 expands as the screw member 40 is compressed. The effect of this expansion is determined by the shape of the collapsing device 20 and the filler 30. Since the collapsing means 20 are extensions or additional parts of the sleeve 10, their expansion increases the contact area and friction with the surrounding environment, thus achieving a firm fixation effect.

Specifically, as the screw member 40 is knocked into or swirled into, it gradually penetrates along the centerline of the sleeve 10. During this process, the collapsing device 20 (either the channel 22, the slat 23 or the collapsing expansion bar 21) is compressed by the screw element 40. Since these expansion devices 20 have a certain elasticity and deformability, they gradually expand along the path of the screw 40. The expanding effect not only increases the contact area with the surrounding environment, but also improves the expansion force and the extrusion force, thereby ensuring the violent firm connection between the expansion device and the surrounding environment (such as various walls or anchor holes made of various materials).

In addition, due to the flexibility of the shape of the collapsing device 20 and the choice of filler 30, a customized design may be made according to different application scenarios and needs. For example, in some applications where higher strength and corrosion resistance are desired, 304 stainless steel or/and glue may be selected as the filler 30.

Referring to fig. 12, in some embodiments, the sleeve is internally filled with a filler or the inner wall of the sleeve is solid.

Secondly, the filler 30 arranged on the shrinkage and expansion device 20, such as a metal material, a plastic material, a wood-bamboo material, a nylon material, a chemical rubber tube, carbonized wood-bamboo, fiber and the like, not only enriches the functions and performances of the device, but also enables the device to adapt to various different application scenes and environmental conditions. These fillers 30 may be selected and combined according to specific requirements to meet different requirements in terms of strength, corrosion resistance, elasticity, deformability, etc.

Finally, the wall of the sleeve 10 is provided with through hole patterns 49 or/and press threads or/and internal threads or/and threads generated by internal clamping points, and the like, and the design not only facilitates the entering and fixing of the screw 40, but also enhances the connection force and friction force between the expansion device and the surrounding environment. When the screw 40 is screwed in, the collapsing device 20 is squeezed to expand, which not only increases the contact area with the surrounding environment, but also further improves the fixing effect and stability of the device.

It should be further noted that the expansion device is one or more of a metal material, a nylon material, a plastic material, and a rubber tube. And the sleeve 10 is a seamless sleeve 10 or a gap is arranged on the side wall of the sleeve 10.

Specifically, the gap of the sleeve 10 is parallel to the center line of the sleeve 10, and when the screw 40 is screwed in, the sleeve 10 can expand, so as to improve the connection strength between the sleeve 10 and the wall.

In this embodiment, referring to fig. 9, 10 and 12, the threads provided on the wall of the sleeve 10 are combined with the threads provided on the one or more expansion devices 20 to generate combined threads, when the expansion device 20 is a expansion/contraction strip 21, the sleeve 10 is provided with threads, and the sleeve 10 is provided with annular or spiral or lattice type threads or inner snap threads or/and the sleeve 10 is provided with threads on the longitudinal periphery of the expansion/contraction strip 21;

The sleeve 10 is provided with a slot hole for the expansion and contraction of the expansion and contraction strip 21, the slot hole is a slot or/and a hole, and any side or any point of the slot hole is fixedly connected or integrally connected with the expansion and contraction strip 21. Specifically, when the expansion strips 21 are placed in the slots, any position of the expansion strips 21 is connected with any edge of the slots, one or more expansion strips 21 are connected to the slots, the two expansion strips 21 are preferably two, the two expansion strips 21 are vertically or laterally symmetrical, and the expansion strips 21 vertically or laterally symmetrical during expansion are raised from the middle.

Specifically, threads provided on the wall of the sleeve 10 are combined with threads provided on one or more collapsing devices 20 (e.g., collapsing and expanding strips 21) to form a combined thread.

The design of the combined screw thread is very flexible and can be customized according to actual requirements. For example, when the collapsing device 20 is a collapsing expansion bar 21, the sleeve 10 may be provided with threads of the annular, convoluted, inner click type and/or lattice type. These threads not only enhance the connection between the sleeve 10 and the expansion strip 21, but also allow the screw 40 to more evenly distribute the pressure as it is screwed in, thereby improving the stability and durability of the expansion device 20.

In addition, the sleeve 10 may also be provided with threads at the longitudinal periphery of the expansion strip 21. This design not only further enhances the connection between the expansion bead 21 and the sleeve 10, but also allows the screw 40 to be more secure after expansion of the expansion bead 21 when screwed in.

In use, the screw 40 (e.g., a screw) is driven into the sleeve 10 by a striking or screwing action and contacts the screw on the sleeve 10. Because the screw threads are arranged on the wall of the sleeve 10 and the contraction and expansion device 20, the screw 40 can be simultaneously connected with the screw threads of the two parts in a extrusion type screw thread connection or/and extrusion type snap connection during screwing in, so that the screw 40 is more stable.

As screw 40 is progressively deeper, it will progressively rotate and advance along the path of the combination screw. In this process, the screw member 40 will generate a certain pushing force to the expansion and contraction bar 21, so that the expansion and contraction bar 21 gradually expands along the slot hole of the sleeve 10 (the expansion opening degree can be customized according to the requirement). This expansion effect not only increases the contact area between the collapsing device 20 and the surrounding environment, but also increases its friction, thus ensuring a firm connection between the collapsing device 20 and the surrounding environment.

Because the design of the combined screw thread is very flexible, the customized design can be carried out according to different application scenes and needs. For example, in some cases where higher strength and corrosion resistance are desired, a metal or plastic material may be selected as the filler 30 of the expansion device 20 and more compact and complex screws may be provided, while in cases where higher elasticity and deformability are desired, a nylon material or a chemical hose or the like may be selected as the filler 30 and more relaxed and simple screws may be provided.

The combination screw thread not only enhances the connection and friction between the expansion device 20 and the surrounding environment, but also improves its stability and durability. This design allows the collapsing device 20 to accommodate a variety of different application scenarios and requirements.

In this embodiment, referring to fig. 16 to 17, the expansion device is used in combination with a screw member 40, wherein one end of the screw member 40 is one of a bolt 44, a screw, a pointed nail 41, a sheep head nail 43, a hook nail 46, a ball joint 47, a clip 42, a positioning nail 45, a four-corner pressing nail, and a pipe clip;

the other end of the screw member 40 is threaded into or knocked into the collapsing apparatus 20 with the one expansion apparatus to expand the collapsing apparatus 20.

The screw 40 has two ends, one for connection to the sleeve 10 and the other including, but not limited to, bolts 44, screws, spikes 41, sheep's head nails 43, hook nails 46, ball joints 47, staples 42, locating nails 45, four corner press nails, pipe clamps, etc. The choice of these screws 40 depends on the specific application scenario and the fixing requirements.

In use, one end of the screws 40 engage the sleeve 10 by striking or screwing into the sleeve 10. As the screw member 40 advances, it pushes the expansion device 20 (e.g., the channel 22, the slat 23, or the expansion strip 21) on the expansion device to expand, thereby achieving a secure fixation to the surrounding environment.

The type and shape of the screw 40 may be selected according to specific requirements, so that the combined use of the expansion device and the screw 40 may be adapted to a variety of different application scenarios and fixation requirements. For example, screw 40 may be selected for ease of tapping or screwing in where quick installation and removal is desired, while screw 40 may be selected for greater strength and stability where greater loads or vibrations are desired.

Specifically, one end of the screw member 40 is connected to the expansion device, and the other end of the screw member 40 is used for connecting a veneer, a decoration strip, a skirting line or a hanging piece, or hanging or fixing an article:

when one end of the screw member 40 is screwed or knocked to the expansion device 20 to expand the expansion device, and the other end of the screw member 40 is provided with a bolt 44, the bolt 44 is directly locked by a nut or the two nuts are fixedly connected with a locking connector or a connecting hanging piece;

When one end of the screw member 40 is screwed or knocked to the expansion device 20 to expand, and the other end of the screw member 40 is provided with a pointed nail 41, the decorative panel or the decorative noodle or the skirting line is knocked into the pointed nail 41 to be fixedly connected with the edge;

When one end of the screw member 40 is screwed or knocked to the expansion device 20 to expand, the other end of the screw member 40 is provided with a sheep head nail 43, and a veneer or a decorative noodle or a skirting line is knocked into the sheep head nail 43 to be fixedly connected;

when one end of the screw member 40 is connected with the expansion device in a screwing or knocking way to expand the expansion device 20, the other end of the screw member 40 is provided with a hook 46 on which an article is hung;

When one end of the screw member 40 is screwed or knocked to the expansion device 20 to expand, the other end of the screw member 40 is provided with a clamp pin 42 to be clamped with an eccentric wheel arranged in a veneer, a laminate or an article, a clamping hole is arranged on the veneer, the laminate or the article, an eccentric wheel is arranged at the top of the clamping hole, and then the clamping hole is aligned to the clamp pin 42 to be inserted into the eccentric wheel, and the eccentric wheel is screwed on the side to clamp the eccentric wheel;

When one end of the screw member 40 is screwed or knocked to the expansion device 20 to expand the expansion device, the other end of the screw member 40 is provided with an extending end, and the extending end is sleeved into the positioning sleeve 10 or is a connected cylinder;

When one end of the screw member 40 is screwed or knocked to the expansion device 20 to expand, a ball joint is arranged at the other end of the screw member 40, and a screw inner hole is arranged outside the joint for fixing the billboard.

When one end of the screw member 40 is screwed or knocked to the expansion device 20 to expand the expansion device, the other end of the screw member 40 is provided with four-corner press nails, and the four-corner press nails are arranged in any shape with larger nail heads, so that one or more facing plates can be tightly locked on a wall or ground when the screw member 40 is screwed.

When one end of the screw member 40 is screwed or knocked to the expansion device 20 to expand the expansion device, the other end of the screw member 40 is provided with a pipe clamp, and the pipe clamp can be used for folding a pipe with a corresponding model or fixing the pipe with a corresponding model through a screw.

But may of course be a conventional screw or self-tapping screw or the application of a screw.

In this embodiment, referring to fig. 10, 15 and 16, a baffle 50 is disposed at an end of the slot 22 or/and the slat 23 away from the sleeve 10, the baffle 50 is used to support the filler 30, so as to ensure that the filler is not easy to run, and can be extruded and expanded at a designated position or extruded and deformed and expanded at a designated position, or a baffle 50 is disposed at an end of the expansion/contraction bar 21 away from the sleeve 10 in a threaded connection or integral molding or clip connection or hinge.

The end of the baffle 50 is provided with a back pressure strip 60, the back pressure strip 60 is pressed on the V-shaped or U-shaped or W-shaped groove strip 22 or the expansion strip 21 and on the straight batten 23 or the expansion strip 21, and the back pressure strip 60 is used for fixing the filler 30 or serving as the filler 30 and increasing expansion arc degree.

In particular embodiments, where the collapsing means 20 is a channel 22 or slat 23, a baffle 50 may be provided at the end of the channel 22 or slat 23 remote from the sleeve 10. The main function of this baffle 50 is to bear against the filling 30, to prevent the filling 30 from falling out of the channel 22 or the strip 23 or for storing said filling 30. The baffle 50 may be made of the same material as the channel 22 or the slat 23, or other suitable materials may be selected as desired.

Similarly, when the collapsing device 20 is a collapsing expansion bar 21, a baffle 50 may be disposed at the end of the collapsing expansion bar 21 remote from the end connected to the sleeve 10. This flap 50 also acts against the filling 30 to ensure that the filling 30 does not fall out or store the filling 30 during expansion.

In addition, a back pressure bar 60 may be provided at the end of the baffle 50. The primary function of the backstop 60 is to press against the channel 22, slat 23 or telescoping expansion bar 21, further securing the filling 30 and increasing the expansion curve. The back pressure strip 60 may be made of a metallic material, a plastic material, or other material having sufficient strength and elasticity.

During installation, the screw 40 is first driven into the screw thread of the expansion device by means of a striking or screwing. As the screw member 40 advances, it pushes the collapsing means 20 (e.g. the channel 22, the slat 23 or the collapsing means 21) to expand. In this process, the baffle 50 will abut against the filler 30 to prevent it from falling off, and the back pressure strip 60 will further fix the filler 30 and increase the expansion radian, thereby improving the fixing effect and stability of the expansion device.

Specifically, when the screw 40 enters the screw of the expansion device and pushes the expansion device 20 to expand, the baffle 50 abuts against the filler 30, preventing the filler 30 from seriously running from the groove strip 22, the slat 23 or the expansion strip 21 during the expansion process, and ensuring the integrity of the expansion device.

At the same time, the back pressure bar 60 will press against the channel bar 22, the slat 23 or the expansion and contraction bar 21, further securing the filler 30. The back pressure strip 60 and the baffle 50 further increase the expansion radian of the expansion device 20, so that the expansion device 20 can better adapt to the surrounding environment and improve the fixing effect.

After the screw member 40 has completely entered the expansion device, the collapsing device 20 will fully expand and come into close contact with the surrounding environment. Due to the presence of the filling 30 in combination with the baffle 50 and the back pressure strip 60, it is possible to effectively ensure that the expansion device expands or deforms at the designated location, where the back pressure strip 60 may also be shown as the functional use of the filling 30.

The expansion effect and the fixing performance of the expansion device 20 are further optimized by adding the design of the baffle 50 and the back pressure strip 60. This design allows the inflatable device 20 to better accommodate a variety of complex environments and fixation requirements, improving its reliability and durability.

In this embodiment, referring to fig. 11 and 19, one or more of through-hole patterns 49, press threads, tooth patterns, nail patterns 48, thorn patterns, fish scale patterns, and inner snap marks are provided on the expansion strip 21 or/and the groove strip 22 or/and the slat 23.

The edges of the expansion strip 21, the groove strip 22 and/or the batten 23 are reversely hooked in a barb mode, and when the groove strip 22 or the batten 23 enters the anchor hole, the barb is started to act, so that the drawing force is improved.

In specific implementation, one or more of through hole patterns 49, thread pressing, tooth patterns, nail patterns 48, thorn patterns, fish scales, inner clamping patterns and the like can be arranged on the zooming expansion strip 21, the groove strip 22 or the lath 23. The designs can increase the expansion force of the expansion device and the corresponding anchor holes (such as concrete, stone, various walls and the like), thereby improving the drawing force and the fixing effect.

In addition, one or more combinations of barb reverse hook or saw tooth or wave patterns may be designed on the edges of the scaling expansion 21, the groove 22 or the slat 23. This design can utilize the barb effect to further increase the tensile resistance with the substrate anchor hole when the telescoping device 20 enters the anchor hole, thereby increasing the pullout force. The barb reverse-hooking edge can be designed to be sharp, curved or otherwise shaped to accommodate different application scenarios and substrate types.

In installation, the expansion device is first placed or tapped or screwed into a pre-drilled anchor hole and then threaded into the expansion device threads using screws 40 (e.g., bolts 44, screws, etc.) in a tapped or screwed manner. As the screw 40 goes deeper it pushes the expansion bead 21, the channel bead 22 or the slat 23 open, into close contact with the anchor hole wall. In this process, the texture and the barb reverse hook design work together to improve the drawing force and the fixing effect of the expansion device.

These expansion devices 20 will come into close contact with the anchor hole wall when the screw 40 enters the screw thread of the expansion device and pushes the expansion strip 21, the groove strip 22 or the slat 23 to expand. In this process, the texture (e.g., through hole texture 49, press threads, teeth, spike texture 48, thorns, fish scales, inner snap marks, etc.) increases the compressive force between the expansion device and the anchor hole wall, thereby increasing the pullout force.

Meanwhile, the barb reverse hook type edge design can further increase the hook force with the base material anchor hole by utilizing the barb effect when the expansion device enters the anchor hole. The design can not only improve the drawing force, but also prevent the expansion device from falling off from the anchor hole when the expansion device is acted by external force.

In this embodiment, referring to fig. 11, when the expansion and contraction bars 21 are two, four or six and are designed in a single layer, the expansion and contraction bars 21 are symmetrically arranged, and when the expansion and contraction bars 21 are three, five or seven and are designed in a single layer, they are arranged in a triangle, pentagon or heptagon;

When the expansion strips 21 are multi-layered, and each layer is two, three, five, six or seven expansion strips 21, the expansion strips 21 of each layer are staggered in azimuth.

When the number of the expansion bars 21 is two, four or six, a symmetrical layout arrangement is adopted. This means that the positions of the expansion strips 21 on the side wall of the sleeve 10 are mirror-symmetrical to ensure that the expansion device 20 is uniformly stressed when expanding, and the fixing effect is improved.

When the number of the zooming expansion bars 21 is three, five or seven, a triangle, pentagon or heptagon layout is adopted. This arrangement allows the collapsing device 20 to form a more stable structure when expanded, further improving its load carrying capacity and resistance to pulling.

When the expansion bar 21 is a multi-layer design, the number of expansion bars 21 in each layer may be two, three, five, six or seven. In order to ensure that the expansion and contraction device 20 can be uniformly stressed when being expanded, the orientation of the expansion and contraction strips 21 of each layer needs to be staggered or arranged side by side. The principle of operation of the collapsing device 20 is the same, whether it is a single layer design or a multi-layer design. When the screw member 40 is threaded into the screw thread of the expansion device by tapping or screwing, it pushes the expansion and contraction rod 21 to expand. In this process, the filler 30 on the scaling expansion bar 21 will act to increase friction and improve the fixing effect.

For the single-layer-design contraction and expansion device 20, the symmetrical layout and the triangular, pentagonal and heptagonal layout can ensure that the contraction and expansion device 20 can be uniformly stressed when being expanded, and the damage caused by overlarge local stress is avoided. At the same time, the layout mode can also improve the bearing capacity and the pulling resistance of the contraction and expansion device 20.

For the multi-layer design of the contraction and expansion device 20, the staggered arrangement of the directions of the contraction and expansion strips 21 of each layer can enable the contraction and expansion device 20 to form a more complex structure when being expanded, so that the bearing capacity and stability of the contraction and expansion device are further improved. This design allows the inflatable device 20 to maintain a stable anchoring effect when subjected to large loads.

In this embodiment, please refer to fig. 10 to 11 and fig. 16 to 17, the nailing lines 48 or/and the stabbing or/and the ichthyosis or/and the threading or/and the toothed or/and the inner click line are provided on the groove strip 22 or the slat 23 or the expansion strip 21, and the double-sided arrangement or the single-sided arrangement is provided, and the double-sided arrangement can increase the thickness of the groove strip 22 or the slat 23 or the expansion strip 21;

the expansion strip 21 is arranged symmetrically or against each other in a snap-in arrangement, which is a snap-in or wave-like snap-in or any other snap-in combination, for example, by providing the nailing lines 48 in a snap-in arrangement, which aims to allow the expansion of the device after expansion to be more open, i.e. to allow the expansion device 20 to be more tightly connected to the wall.

In practice, the textures may be provided on the two side surfaces of the groove strip 22, the slat 23 or the expansion strip 21. These textures may be produced by machining, laser etching, chemical etching, stamping, etc. The depth and the spacing of the textures can be adjusted according to actual needs to achieve the optimal expansion effect and bearing capacity.

For example, the provision of the stapling grain 48 and/or the stabbing grain may increase the thickness of the channel strip 22, the slat 23, the expansion strip 21, and increase the expansion force with the surrounding environment, thereby creating more resistance to the advancement of the screw element 40 and increasing the expansion effect. The scale pattern may provide some roughness while increasing the aesthetic appeal of the device 20. The press threads and the insections provide better precession and thread locking effects, further enhancing the fixing performance of the expansion device 20.

In addition, by providing these textures on both sides, the thickness of the channel 22, slat 23, or scaling expansion 21 can also be increased, thereby increasing its expansion. The drawing force can be improved, the application range of the drawing device is wider, particularly the drawing force of the wall body of the aerated brick and the porous brick is better than that of the traditional drawing force of the wall body of the aerated brick, and the drawing device is more selected by customers.

When the screw member 40 is driven into the screw thread of the collapsing device 20 by a striking or screwing manner, it pushes the slit 22, the slat 23 or the collapsing expansion bar 21 to expand. In this process, the double-sided texture provides a screw or snap action and increases the expansion force.

In this embodiment, referring to fig. 10 to 11, the expansion and contraction bar 21 protrudes or is flush with the slot hole of the expansion and contraction bar 21, or is located inside the slot hole of the expansion and contraction bar 21.

When the expansion strip 21 is placed in a protruding manner, part or all of the volume of the expansion strip 21 exceeds the outer surface of the side wall of the sleeve 10, so long as the expansion strip enters the corresponding anchor hole and is not affected. This design allows the telescoping expansion bar 21 to have a larger expansion radius when expanded, thereby providing a stronger anchoring effect. The convexly placed expansion bead 21 may be formed directly on the sidewall of the sleeve 10 by machining, casting or injection molding, die stamping, etc., or may be connected to the sleeve 10 by threaded connection, snap connection, hinge connection, etc.

The outer surface of the expansion strip 21 is consistent with the outer surface of the side wall of the sleeve 10 when the expansion strip is placed flush. This design may make the collapsing device 20 more neat in appearance without adding additional space. The flush placed expansion bead 21 may also be formed directly onto the sidewall of the sleeve 10 by machining, casting or injection molding, die stamping, etc., or may be attached to the sleeve 10 by a suitable attachment means (e.g., threaded connection, snap-fit connection, etc.).

When the expansion strip 21 is arranged in the slot, the expansion strip 21 is completely or partially positioned inside the slot on the side wall of the sleeve 10. This design may allow the collapsing device 20 to be more compact when expanded while also helping to reduce interference with the external environment. The expansion strip 21 which is built in the slot hole can be formed by a special processing method (such as die stamping, injection molding, etc.), and is connected with the sleeve 10 by a proper connection mode (such as hinging, elastic buckle, integral type, etc.), so as to ensure that the expansion strip can keep a stable and reliable fixing effect when expanding.

The principle of operation is the same whether the expansion strip 21 is convex, flush or built into the slot. When the screw member 40 is threaded into the screw thread of the collapsing device 20 by tapping or screwing, it pushes the collapsing expansion bar 21 to expand. It should be noted that the thicker the thickness of the expansion strip and the filler, the stronger the expansion force, and if the expansion force is needed, the thickness of the expansion strip 21 can be reduced or the material of the filler can be changed.

As the screw 40 advances, the expanding bead 21 is forced and begins to expand outwardly. In this process, the filler 30 (e.g., metal material, plastic material, etc.) on the expansion strip 21 will act to support and enhance the expansion effect. For a convexly placed expansion bead 21, the expansion radius will be larger, providing a stronger anchoring effect, and for a flush placed or built-in slot expansion bead 21, a sufficient anchoring force can be ensured by a reasonable design and selection of the filler 30, although the expansion radius is relatively small. It should be noted that when the expansion strip 21 is placed in a protruding manner, it is in an abutting or engaging arrangement with the opposite expansion strip, and after the screw member 40 enters, the expansion of the expansion strip is wider, so that the drawing force is greatly improved.

After expansion of the expansion and contraction strip 21, it will be compressively fused or snapped together with the surrounding medium (e.g., wall, concrete, etc.), thereby providing a secure fixing effect. This fixing effect can withstand certain tensile and compressive forces, ensuring that the telescoping device 20 remains stable and reliable during long-term use.

When one end of the expansion device is provided with the contraction and expansion device 20, structural adhesive is firstly attached to one end of the expansion device, the expansion device is implanted into an anchor hole through a knocking type or a screwing type, or when one expansion device is a sleeve 10, the structural adhesive is attached to one end of the implanted anchor hole to be aligned with a preset anchor hole, and one expansion device is implanted into the anchor hole through a knocking type or a screwing type;

When one expansion device is provided with one end of an expansion body, aligning with a preset anchor hole, arranging a bar planting glue (direct insertion) or a chemical glue tube (spiral screw in, when the chemical glue tube is not needed to be mixed, the chemical glue tube can be directly inserted, and one expansion device is implanted into the anchor hole through a knocking type or a screwing type, or when one expansion device is a sleeve 10, aligning one end of the implanted anchor hole with the preset anchor hole, arranging the bar planting glue or the chemical glue tube in the anchor hole, and implanting one expansion device into the anchor hole through a knocking type or screwing type;

when one end of the expansion device is provided with an expansion body, aligning with a preset anchor hole, implanting the expansion device into the anchor hole through knocking or screwing, aligning the paired end of the screw 40 and one expansion device with the sleeve 10 opening of the expansion body with the sleeve 10 in the implanted anchor hole, and locking or compacting and fixing the screw through screwing or knocking.

When one end of the expansion device with an expansion body is inserted into the anchor hole by knocking or screwing or when one expansion device is the sleeve 10, one end of the inserted anchor hole is aligned with a preset anchor hole, and one expansion device is inserted into the anchor hole by knocking or screwing; aligning one end of the screw 40 matched with one expansion device to the socket 10 of one expansion device in the implanted anchor hole, locking or compacting the screw to a designated position by screwing or knocking, wherein the screw 40 is screwed or knocking through the contraction and expansion device 20 until the screw is expanded outwards and then anchored and glued after glue at the expansion part overflows;

When one end of the expansion device with an expansion body is inserted into the anchor hole by knocking or screwing or when one expansion device is the sleeve 10, one end of the inserted anchor hole is aligned with a preset anchor hole, and one expansion device is inserted into the anchor hole by knocking or screwing; aligning one end of the screw member 40 matched with one expansion device to the sleeve 10 opening of one expansion device in the implanted anchor hole, locking or pressing the screw member to a designated position by screwing or knocking, wherein the screw member 40 is screwed or knocking through the expansion device 20 to expand and anchor the screw member outwards;

In this embodiment, referring to fig. 1 to 7, an end of the screw member 40 connected to the expansion device is provided with a barb, the screw member 40 is knocked into an end of the expansion device provided with the sleeve 10, and is opened to expand the expansion device 20, the barb enters the expansion device 20 and then starts to reverse hook positioning, and the expansion device 20 is provided with one or more of an inner tooth, a nail-striking thread 48, a thorn, an embossing, a through hole thread 49, a screw thread, an inner clamping point or/and an inner clamping point 70.

The screw member 40 may be made of metal, plastic or other suitable material. At the front end of the screw member 40 (i.e. the end connected to the expansion device 20) a certain number and shape of barbs may be machined. The barbs may take the form of sharp projections, hooked structures or other shapes that can be firmly embedded within the inflatable device 20.

At the same time, the collapsing means 20 (either the channel 22, the slat 23 or the collapsing means 21) on the expansion means are adjusted accordingly to form an effective engagement with the barbs on the screw member 40, and may be used without adjustment. Specifically, the expansion device 20 may be provided with a structure of an internal thread, a nailing thread 48, a thorn thread, an embossing, a through hole thread 49, a screw thread, etc. which are matched with the barb shape. These structures provide sufficient insertion space and resistance for the barbs as the screw member 40 enters the expansion device, thereby ensuring that the screw member 40 is securely held within the expansion device 20.

When the screw member 40 is threaded into the expansion device by tapping or screwing, it pushes the expansion device 20 open. During this process, the barbs on the leading end of the screw member 40 will first contact the corresponding structure (e.g., the insection, the spike 48, etc.) on the expansion device 20.

As the screw 40 is advanced, the barbs pass through one and the other corresponding structure into the interior of the inflatable device 20, making a secure connection difficult to pull back. The shape and number of barbs and the mating structure on the expansion device 20 affect the stability and firmness of the connection during this process.

When the screw member 40 is fully inserted into the collapsing device 20, the barbs will firmly grip the collapsing device 20 to prevent it from loosening or falling off. In this way, the expansion device 20 can be firmly mounted on a predetermined location, such as a wall, concrete or the like, by the fixing action of the screw 40.

In addition, due to the presence of the barbs, even if the collapsing device 20 is subjected to an impact or vibration of an external force during a long-term use, the screw member 40 can maintain a stable coupled state, thereby ensuring reliability and durability of the collapsing device 20.

In this embodiment, referring to fig. 11 and 13, an inner clamping point setting opening 11 is provided on the wall of the sleeve 10 or the expansion device 20, the inner clamping point patterns 70 are provided on the sleeve 10 or the expansion device 20, the inner clamping point setting opening 11 is provided with one or more inner clamping point patterns 70, and the inner clamping point patterns 70 are provided around the inner clamping point setting opening 11 or on any one side or more than one side thereof;

when the inner snap lines 70 are downward, the inner snap lines 70 are vertically or obliquely or inwardly bent.

Further, the inner click lines 70 are sheet-shaped, or grain-shaped or any other shape, which can be used for fastening or clamping screws or nails;

The side wall of the sleeve 10 is provided with an inner clamping point setting opening 11 in a penetrating manner, inner clamping point patterns 70 are arranged around the inner clamping point setting opening 11 and in the sleeve 10, and the inner clamping point patterns 70 are used for improving the connection strength between the screw 40 and the sleeve 10. In use, the screw member 40 enters the sleeve 10, contacts the inner snap-fit threads 70, and is threadedly engaged with the inner snap-fit threads 70. Further, the inner click point setting port 11 is preferably a square through hole, and the inner click point setting port 11 and the inner click point pattern 70 are formed by punching.

In this embodiment, referring to fig. 16 and 17, one end of the expansion assembly provided with the expansion bar 21 is aligned with a preset anchor hole, an expansion device is implanted into the anchor hole by tapping or screwing, one end of the screw member 40 paired with the expansion device is aligned with the expansion device and is implanted into the sleeve 10 opening of the hole, and the screw member is locked or pressed by screwing or tapping until the expansion device 20 is expanded.

Firstly, anchor holes are preset on a substrate (such as a wall body, concrete and the like) to be fixed. The size and depth of the anchor holes should be determined according to the specific size and anchoring requirements or/and theoretical requirements of the expansion device. Next, a suitable expansion device is selected to ensure that one end of its telescoping expansion bar 21 is aligned with the pre-set anchor hole.

The telescoping device 20 is implanted in the anchor hole by a percussive or a screw-in approach.

The end of the screw member 40 that mates with the telescoping device 20 is aligned with the telescoping device 20 to be exposed at the opening of the sleeve 10 at the opening.

Screw member 40 is locked or secured in compression by either a screw-on or a tap-on manner. During this process, the screw 40 gradually enters the screw thread of the collapsing device 20 and pushes the collapsing expansion bar 21 to expand.

When the screw 40 is fully locked or compressed, the expansion and contraction strip 21 of the expansion and contraction device 20 expands sufficiently to form violent extrusion with the base material around the anchor hole, and even to eat the anchor hole wall. In this way, the collapsing device 20 can be firmly fixed to the base material, achieving the desired fixing effect.

When the screw member 40 is threaded into the thread of the collapsing device 20 by screwing or tapping, it gradually pushes the collapsing expansion bar 21 to expand. In this process, the pushing force of the screw member 40 is converted into a force to expand the expansion bead 21 outwardly.

As the screw 40 advances, the expansion bead 21 is subjected to greater and greater pressure and begins to expand outwardly, particularly if the filling mass is arranged in a triangular fashion (as shown in fig. 14), and the expansion bead 21 is subjected to greater and greater compression force. In this process, the filler 30 (e.g., metal material, plastic material, etc.) on the expansion strip 21 will act to support and enhance the expansion effect.

When the expansion and contraction strip 21 is fully expanded, it will make compressive contact with the substrate surrounding the anchor hole. Such squeeze contact can produce sufficient biting and clamping forces to prevent the telescoping device 20 from sliding or falling off the substrate. At the same time, the collapsing means 20 can be firmly fixed to the base material due to the locking or pressing action of the screw member 40, achieving the desired fixing effect.

In this embodiment, referring to fig. 9, the end of the slot 22 or/and the slat 23 or/and the expansion strip 21 connected to the sleeve 10 is provided with an L-shaped or partially inclined end to the end provided with the baffle 50, the partially inclined end of the slot 22 or/and the slat 23 connected to the sleeve 10 is provided with an end inclined end to the head end, the end of the slot 22 or/and the slat 23 connected to the sleeve 10 is provided with an end provided with the baffle 50, and the end of the tail end is provided with an end provided with the baffle 50.

When the end of the channel 22, slat 23 or expansion 21 connected to the sleeve 10 is L-shaped with the end where the baffle 50 is located, this means that a right angle or near right angle turn is formed between the two parts. This design may enhance the strength of the connection between the channel 22, slat 23 or expansion strap 21 and sleeve 10, preventing it from falling off or breaking during use. In practice, the channel 22, slat 23 or expansion 21 and sleeve 10 may be firmly joined together by integral molding, welding, riveting, etc., and ensure sufficient strength and stability at the L-turn therebetween.

When the sleeve 10 is partially inclined, that is, the end points of the groove strips 22, the battens 23 or the expansion strips 21 connected with the sleeve 10 are inclined or inclined from head to tail. This design may allow for smoother deployment of the channel 22, slat 23 or telescoping expansion 21.

In this embodiment, the filler 30 includes an inner filler 30 and an outer filler 30, the groove strip 22 or/and the slat 23 or/and the expansion strip 21 are provided with the outer filler 30, one end of the expansion device 20 near the sleeve 10 or/and the sleeve 10 is provided with the inner filler 30,

The inner filler 30 is one or more of wood sticks, bamboo sticks, fibers, plastics, nylon, foam, and the like.

The external filler 30 is fixed with the groove strip 22 or/and the batten 23 or/and the expansion strip 21 in a clamping mode or/and a glue mode.

The inner filling 30 is disposed at an end of the telescoping device 20 adjacent to the sleeve 10 or inside the sleeve 10. Its primary function is to provide additional support and strength to ensure that the collapsing device 20 maintains a stable shape and size when expanded.

The inner filler 30 may be one or more selected from wood sticks, bamboo sticks, fibers, plastics, nylon, foam, and the like. These materials have different physical properties, such as strength, hardness, toughness, etc., and may be selected according to particular needs.

In particular embodiments, the inner filler 30 may be disposed within the expansion device 20 or sleeve 10 by insertion, snap fit, injection molding, adhesive, or the like.

The outer filling 30 is provided on the channel strip 22, the slat 23 or the expansion strip 21. Its main function is to increase the friction between the collapsing means 20 and the substrate, thereby improving the fixing effect.

The outer filler 30 may also be made of one or more materials selected from metal materials, plastic materials, wood-bamboo materials, nylon materials, chemical hoses, carbonized wood bamboo, fibers, etc. The choice of these materials depends on the type of substrate and the fixing requirements.

In practice, the outer filling 30 may be connected to the channel 22, slat 23 or expansion strap 21 by means of a snap-fit or glue-fit or the like. The clip type fixing usually involves inserting the filler 30 into a pre-designed slot and fixing it by means of a snap or snap spring, etc., while the glue type fixing is to adhere the filler 30 to the channel strip 22, the slat 23 or the expansion strip 21 by applying an adhesive.

As the screw member 40 enters or passes through the collapsing apparatus 20, the collapsing apparatus 20 expands and comes into intimate contact with the substrate. At this time, the inner packing 30 provides additional support and strength, ensuring that the collapsing device 20 maintains a stable shape and size, and prevents deformation or damage due to external force.

In this embodiment, the material of the external filler 30 is selected according to different application substrates, the substrate is a mixed clay wall, wood or/and with low density is mainly used, the substrate is a solid red brick wall, the substrate is a porous red brick wall, the substrate is an aerated brick wall, and the substrate is a high density.

Before using the expansion device, it is first necessary to identify and determine the type of target substrate. The matrix types may include clay walls, solid red brick walls, porous red brick walls, aerated brick walls, and the like.

Depending on the type of substrate, a suitable material for the outer filling 30 is selected. When the matrix is a concrete wall, it is appropriate to select wood or wood-bamboo materials having a smaller density as the exterior filler 30 because the concrete has a higher strength and hardness. These materials can improve grip while also improving expansion. For a solid red brick wall, due to moderate hardness and density of the red brick, a material with better compatibility with the red brick, such as a nylon material or a plastic material, can be selected. These materials can improve grip. For the porous red brick wall, the product of the invention is more suitable for use, and the expansion strip can be arranged according to the positions of the porous brick wall holes, so that the product can be expanded at the appointed positions. For example, a metal material or/and a fiber material or/and a chemical rubber tube can be selected to achieve better effects. When the matrix is an aerated brick wall, a denser material needs to be selected as the outer filler 30 to ensure that the expansion device is securely fastened to the wall, due to the lower density and porosity of the aerated brick. A metal material or carbonized wood-bamboo or the like is suitably selected. It should be noted that the above examples are only examples, and the specific application scope is defined by the claims, because the filler is used in any wall, and all materials mentioned can be used only with a small component, and the examples are only illustrative and not limiting.

After the appropriate material for the outer filling 30 is selected, it is required to be mounted to the channel 22, slat 23 or expansion strip 21. This may be accomplished by a snap fit, glue fit or other suitable means of attachment. By selecting the appropriate material for the outer filling 30 according to the type of matrix, the expansion device is better able to accommodate different types of walls. This helps to ensure that the expansion device is able to make compressive contact with the substrate when expanded and to improve the grip.

It should be noted that, according to the expansion device of the present invention, the expansion block and the nailing line 48 are disposed in the expansion device, and the nailing line 48 is not limited to the shape shown in the figure by being disposed in cooperation with each other, but may be any shape, such as a dot shape, a line shape, a triangle shape, a pentagon shape, a wave shape, etc., where the nailing line is combined with the thread or the tooth groove corresponding to the screw member, when the screw member is screwed into or is nailed into, and the tooth tip and the nailing line 48 are in extrusion state, the limited space of the expansion device can be maximally expanded, so as to achieve a better safe anchoring effect, and the expansion device is stronger when being used in cooperation with the adhesive.

It should be noted that the screw member mentioned in the present invention should not be understood as having a spiral function, but is just a code in the present invention, for better distinction in writing, the portion connected to the expansion device may be any one or any combination of two or more of a bolt, a screw, a self-tapping screw, a nail, and a spike (spike), and when the screw member is a nail or a spike, the screw member is inserted by tapping, not by screwing, so that the present invention is specifically described.

It should be noted that the expansion device is preferably manufactured by die stamping and automatic line production, so that the expansion device is preferably manufactured by an application structure and an additional structure or/and an additional material which can be suitable for die stamping and automatic line production, thereby reducing the production cost and being convenient to popularize.

It should be noted that, part of the screw lines are easy to understand in a text form, so that no through graph is displayed, and the screw lines are difficult to understand, for example, the nailing lines, the inner clamping lines and the through hole lines are all shown in a graph, and the screw lines can be well pushed out by combination specification type arrangement which can be understood through text description.

It should be noted that the spherical joint 47 can be adjusted freely left and right or \and up and down or ball axis, and the main function is that the anchor hole corresponding to the expansion device is inclined, and the expansion device corresponding to the implantation installation is inclined, and the screw element is inclined, so that the adjustment verticality of the spherical joint is required, especially when one veneer corresponds to the screw element arranged on four expansion devices, the inner threads on the spherical joint on the screw element are required to be vertically aligned with the corresponding veneer screw holes, so that the parallel locking can be realized, and the plurality of ball heads can be adjusted, thereby being convenient for the parallel locking of the veneer, especially being suitable for the installation locking of billboards and tablets, and being applicable when one or more anchor holes are inclined. The screw member 40 may be provided with a screw point on the spherical head of the assembly of the spherical joint 47, which does not affect the movement of the spherical joint 47, the assembly combined with the spherical head is provided with a screw hole, the screw hole penetrates to the spherical head, the screw point arranged on the spherical head can be screwed and fixed, or the screw point is arranged at the bottom of the spherical head, for example, the screw point is provided with a square, pentagonal or hexagonal screw point, and of course, the screw point is not provided to directly strike into an expansion device, which is also used in the technology of the invention.

It should be noted that the above embodiments are only used to illustrate the technical solution of the present application, but not to limit the technical solution of the present application, and although the detailed description of the present application is given with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application, and all the modifications or substitutions are included in the scope of the claims and the specification of the present application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. An expansion device comprising a sleeve, characterized in that:

When the expansion device is provided with one or two or more expansion strips, the sleeve or the wall of the sleeve is provided with one or two or more expansion strips, and when the expansion strips are provided with a plurality of expansion strips, the expansion strips are arranged in a single-layer or multi-layer mode; the sleeve and the expansion strip are integrally formed, connected in a clamping manner or hinged, the sleeve is provided with a slotted hole for expanding and contracting the expansion strip, the slotted hole is a slot or a hole, the expansion strip is U-shaped, V-shaped, W-shaped or in a straight shape, the expansion strip is provided with a filler, and the filler is one or more of metal materials, plastic materials, wood-bamboo materials, nylon materials, chemical rubber tubes, carbonized wood-bamboo and fibers;

2. An expansion device according to claim 1, wherein the threads provided on the wall of the sleeve are combined with one or more threads provided on the expansion device to form combined threads, and when the expansion device is provided with one or more expansion strips, the threads provided on the sleeve are annular threads, spiral threads, lattice threads, or inner snap-rings provided on the sleeve;

3. An expansion device according to claim 1, wherein the expansion device is used in combination with a screw, wherein one end of the screw is one of a bolt, a screw, a pointed pin, a sheep-head pin, a hook, a ball joint, a staple, a locating pin, a four-corner press pin, a pipe clamp;

4. An expansion device according to claim 1, wherein the end of the groove strip or/and the slat remote from the sleeve is provided with a baffle, or the end of the expansion strip or/and the expansion strip remote from the sleeve is provided with a baffle.

5. An expansion device according to claim 4, wherein the back pressure strip is arranged at the tail end of the baffle plate and is pressed on the V-shaped or U-shaped or W-shaped groove strip or the expansion strip or the strip in a straight shape or the expansion strip, and the back pressure strip is used for fixing the filler or/and serving as the filler to increase the expansion arc degree.

6. An expansion device according to claim 1, wherein one or more of through-hole patterns, press threads, tooth patterns, nail patterns, thorn patterns, fish scales and inner snap marks are arranged on the expansion strips or/and the groove strips or/and the batten;

7. An expansion device according to claim 1, wherein when the expansion/contraction strip is provided in a plurality of strips, it is provided in a single layer or in a plurality of layers;

When the expansion strips are two, four or six and are designed in a single layer, the expansion strips are symmetrically distributed; when the expansion strip is three or five or seven and is designed as a single layer, the expansion strip is arranged in a triangle, pentagon or heptagon form;

When the expansion strips are multi-layered, and each layer is two or three or four or five or six or seven or more expansion strips, the expansion strips of each layer are staggered or arranged side by side in azimuth;

The expansion strip is protruded or flush with the slot surface of the expansion strip or is positioned in the slot corresponding to the expansion strip.

8. An expansion device according to claim 1, wherein the grooves are formed on the battens or on the strips or on the expansion strips, the nailing lines or the puncturing lines or the fish scale lines or the embossing lines or the toothed lines or the through hole lines or the inner clamping point lines are formed, the expansion opening degree is increased when the thickness of the groove strip or the slat or the expansion strip is increased when the expansion strip is applied;

when the expansion strips are symmetrically arranged or are arranged against each other or are arranged with the occlusion type, the occlusion type is a point type occlusion or wave type occlusion or other arbitrary occlusion type combination.

9. The expansion device according to claim 1, wherein one end of the screw piece connected with the expansion device is provided with a barb, the screw piece is knocked into the expansion device until the expansion device is expanded by aligning a sleeve mouth, the barb enters the expansion device and then starts to perform a reverse hooking positioning function, the expansion device is provided with one or more combinations of an inner line, a nailing line, a thorn line, an embossing line, a through hole line, a screw line and an inner clamping point line which are clamped or hooked with the barb, and when the combinations are overlapped, the overlapped combinations are formed into the inner line, the embossing line, the screw line or the screw line with nailing line, the thorn line or the inner clamping point line;

10. An expansion device according to claim 1 or 9, wherein an inner snap-point setting opening is arranged on the sleeve wall or the contraction and expansion device, the inner snap-point patterns are arranged on the sleeve or the contraction and expansion device, the inner snap-point setting opening is provided with one or more inner snap-point patterns, and the inner snap-point patterns are arranged around the inner snap-point setting opening or on any one side or more than one side thereof;

when the inner clamping point lines are downwards arranged, namely, face one side of the anchor hole, the inner clamping points are vertically arranged, obliquely arranged or inwards bent;

When the inner clamping point setting ports are arranged on the sleeve ports and are in a notch shape, and when a plurality of notch-shaped inner clamping point setting ports are arranged oppositely or in a multi-angle shape, the notch array formed by combination is used as a spiral port spiral point;

the inner clamping point setting opening is quadrilateral, notch-shaped or any other shape.

11. An expansion device according to claim 1, wherein one end of the expansion device provided with the expansion/contraction strip is aligned with a preset anchor hole, one expansion device is implanted into the anchor hole by tapping or screwing, one end of the screw element paired with the one expansion device is aligned with the one expansion device implanted into the anchor hole and exposed on the sleeve opening of the hole, and the screw element is locked or pressed by screwing or tapping until the expansion/contraction device expands.

12. An expansion device according to claim 1, wherein the end of the slot bar or/and the slat or/and the expansion strip connected with the sleeve is arranged in an L-shaped manner with the end provided with the baffle, or the slot bar or/and the slat or/and the expansion strip connected with the sleeve is arranged in a local inclined manner or in an end-to-end inclined manner, the head end is the end of the slot bar or/and the slat connected with the sleeve, the tail end is the end provided with the baffle, and the bottom of the slot bar or/and the slat or/and the expansion strip are in an abutting or biting manner when being arranged opposite to the end provided with the baffle.

13. An expansion device according to claim 1, wherein the packing comprises an inner packing and an outer packing, wherein the groove strips or/and the strip or/and the expansion strip are provided with the outer packing, one end of the expansion device close to the sleeve or/and the sleeve is provided with the inner packing,

The internal filler is one or more of wood sticks, bamboo sticks, fibers, plastics, nylon, foam, sealant, foam glue, joint filling agent and the like;

14. The expansion device according to claim 1, wherein the material of the external filler is set according to different application matrixes, the matrixes are any one of a mixed mud wall, a solid red brick wall, a porous red brick wall, an aerated brick wall and a rock, the external filler combination is set to be easier to deform or set to be larger in deformation degree in the anchor holes of the mixed mud wall and the rock serving as the matrixes, and the external filler combination is set to be less easier to deform or set to be not deformed in the anchor holes of the solid red brick wall, the porous red brick wall and the aerated brick wall serving as the matrixes.