WO2022077691A1

WO2022077691A1 - Expansion screw for wall plate

Info

Publication number: WO2022077691A1
Application number: PCT/CN2020/129347
Authority: WO
Inventors: 胡福涛; 葛克宇; 陈阳
Original assignee: 苏州科逸住宅设备股份有限公司
Priority date: 2020-10-13
Filing date: 2020-11-17
Publication date: 2022-04-21
Also published as: CN213298518U

Abstract

An expansion screw for a wall plate, comprising a screw (10) and an expansion sleeve (20). The expansion sleeve (20) comprises a support portion (21), deformation portions (22), and a threaded sleeve (23) which are connected in sequence; the support portion (21) is set as a hollow straight quadrangular prism, such that the sidewalls of the support portion (21) at opposite sides extend toward the threaded sleeve (23) to form the deformation portions (22); an internal thread matching the screw (10) is provided inside the threaded sleeve (23), such that a first deformation seam and a second deformation seam are respectively formed at the joint between each deformation portion (22) and the support portion (21) and the joint between each deformation portion (22) and the threaded sleeve (23). In use, the screw (10) is screwed into the threaded sleeve (23) after passing through the support portion (21) and the deformation portions (22), and the middle of each deformation portion (22) is driven by means of the thread fit between the screw (10) and the threaded sleeve (23) to bulge outwards, by taking the first deformation seam and the second deformation seam as end points, to form a hook claw (223) to hook and abut against the backsurface of a wall plate (30), so as to fix the expansion sleeve (20) to the wall plate (30).

Description

Expansion screw for wall panel

technical field

The utility model relates to the fields of construction and decoration, in particular to an expansion screw for wall panels.

Background technique

The siding is a protective wall or decorative plate made by people according to the needs of the wall. The siding itself has no nail-holding force. Usually, holes are drilled in the siding and expansion screws are embedded in the holes to provide the load of the pendant. However, most of the existing expansion screws are fixed by pressing the deformation part against the wall of the hole after deformation. When it is matched with the wall plate, the force to control the deformation is too small, the expansion screw is not fixed firmly, the pendant is easy to fall off, and the deformation is controlled. If the force is too large, it is easy to squeeze the hole wall, and in serious cases, it will lead to the cracking of the entire wall plate and scrap it, which requires high requirements for operators and is difficult to construct.

Utility model content

The purpose of the utility model is to overcome the defects of the prior art, and to provide an expansion screw for wall panels with low requirements for operators and low construction difficulty.

In order to achieve the above purpose, the technical solution adopted by the present invention is that an expansion screw for a wall plate includes a screw and an expansion sleeve, the expansion sleeve includes a support part, a deformation part and a threaded sleeve connected in sequence, and the support part is A hollow right quadrangular prism, the deformation portion is formed by extending from a side wall on an opposite side of the support portion to the direction of the threaded sleeve, the interior of the threaded sleeve is provided with an internal thread matching the screw, the A first deformation seam is formed at the connection between the deformation part and the support part, and a second deformation seam is formed at the connection between the deformation part and the threaded sleeve;

In use, the screw is screwed into the threaded sleeve after passing through the support part and the deformation part, and the middle part of the deformation part is driven to the first deformation seam by the thread cooperation with the threaded sleeve. The end point of the second deformation seam is bulged outward, and a hook is formed to hook and press against the back of the wall plate, and the expansion sleeve is fixed on the wall plate.

Preferably, a support rib is provided on the outer wall of the support portion, and the support rib extends along the axial direction of the support portion.

Further preferably, there are at least two supporting ribs, and the two supporting ribs are distributed on a side wall of an opposite side of the supporting portion.

Further preferably, there are four support ribs, and the four support ribs are distributed on four sides of the support portion.

Preferably, the end portion of the support portion extends outward in a direction perpendicular to the axial direction of the support portion to form a disc-shaped flange.

Preferably, the length of the support portion is 0.95-1.05 times the thickness of the wall plate.

Further preferably, the length of the support portion is equal to the thickness of the wall plate.

Preferably, the inner wall of the deformation part is provided with an inwardly protruding protrusion, the protrusion is close to the middle of the deformation part, and when the expansion screw is in use, the protrusion is filled in the claws of the hook. The inner space of the tip is used to enhance the strength of the hook.

Further preferably, the cross section of the protrusion is triangular.

Further preferably, the side wall of the other opposite side of the support portion extends in the direction of the deformation portion to form a protruding portion, and when the expansion screw is in use, the end of the protruding portion bears against the The threaded sleeve is used to limit the length of the screw being screwed into the threaded sleeve.

Due to the application of the above-mentioned technical solutions, the present invention has the following advantages compared with the prior art:

The expansion screw for a wall plate provided by the utility model comprises a screw and an expansion sleeve, and the expansion sleeve includes a support part, a deformation part and a threaded sleeve connected in sequence; The side wall of the threaded sleeve extends in the direction of the threaded sleeve to form a deformation part, and an internal thread matching the screw is arranged inside the threaded sleeve, so that the first and second deformation seams are formed at the connection between the deformation part and the support part and the threaded sleeve respectively. When the screw passes through the support part and the deformation part, it is screwed into the threaded sleeve, and the middle part of the deformation part is driven to bulge outward with the first deformation seam and the second deformation seam as the endpoints through the thread cooperation with the threaded sleeve, forming a hook to hook. And press against the back of the panel, fix the expansion sleeve on the panel, the holes on the panel will not be stressed, and will not cause damage to the panel, the requirements for operators are low, and the construction difficulty is small.

Description of drawings

FIG. 1 is a schematic front view of a preferred embodiment of the present invention, and the deformation portion is not deformed at this time.

FIG. 2 is a schematic left side view of FIG. 1 .

FIG. 3 is a schematic bottom view of FIG. 1 .

FIG. 4 is a schematic perspective view of FIG. 1 .

FIG. 5 is a schematic front view of the preferred embodiment of the present invention, when the deformation portion is just deformed.

FIG. 6 is a schematic perspective view of FIG. 5 .

FIG. 7 is a schematic front view of the preferred embodiment of the present invention, at which time the deformation part has been deformed.

FIG. 8 is a schematic perspective view of FIG. 7 .

9-10 are three-dimensional schematic diagrams of FIG. 1 when it cooperates with the wall plate.

11-12 are three-dimensional schematic diagrams of FIG. 7 when it cooperates with the wall plate.

Wherein: 10. Screw; 20. Expansion sleeve; 21. Support part; 211. Support rib; 212. Flange; 213. Protruding part; 22. Deformation part; Threaded sleeve; 30. Siding.

Detailed ways

The technical solutions of the present utility model will be further elaborated below in conjunction with the accompanying drawings.

As shown in Figures 1-8, the expansion screw for a wall plate provided by the present invention includes a screw 10 and an expansion sleeve 20. The expansion sleeve 20 includes a support part 21, a deformation part 22 and a threaded sleeve 23 connected in sequence, and the support part 21 is A hollow right quadrangular prism, the deformation part 22 is formed by extending from the side wall on the opposite side of the support part 21 to the direction of the threaded sleeve 23, the inner thread of the threaded sleeve 23 is provided with an internal thread matching the screw 10, the deformation part 22 and the support part 21 A first deformation seam is formed at the connection of the threaded part 22, and a second deformation seam is formed at the connection between the deformation part 22 and the threaded sleeve 23; in use, the screw 10 is screwed into the threaded sleeve 23 after passing through the support part 21 and the deformation part 22, and the screw 10 and the thread of the threaded sleeve 23 drive the middle part of the deformation part 22 to bulge outward with the first deformation seam and the second deformation seam as the endpoints, so that the hook 223 is hooked and pressed against the back of the wall plate 30, and the expansion sleeve 20 is fixed. on wall panel 30.

In this embodiment, in order to enhance the strength of the support portion 21 , a support rib 211 is provided on the outer wall of the support portion 21 . The support rib 211 is located in the middle of the outer wall of the support portion 21 and extends along the axial direction of the support portion 21 . , there are four support ribs 211 , and the four support ribs 211 are distributed on four sides of the support portion 21 .

In this embodiment, in order to more stably fix the expansion sleeve 20 on the wall plate 30, the end of the support portion 21 extends outward in a direction perpendicular to the axial direction of the support portion 21 to form a disc-shaped flange 212, When in use, the flange 212 bears against the front side of the wall plate 30 , the hook 223 bears against the back side of the wall plate 30 , and clamps the expansion sleeve 20 on the wall plate 30 .

The length of the support portion 21 is set according to the thickness of the wall plate 30. Since the hook claws 223 can play a role of hooking and pressing against the back of the wall plate 30 within a certain bending range, in order to facilitate processing and manufacturing, the length of the support portion 21 It is 0.95-1.05 times the thickness of the wall plate 30 . Of course, the length of the support portion 21 equal to the thickness of the wall plate 30 is the best choice.

In order to enhance the strength of the hook 223, the inner wall of the deformation part 22 is provided with a protrusion 224 that protrudes inward, and the protrusion 224 is close to the middle of the deformation part 22. When the expansion screw is used, the protrusion 224 is filled with the tip of the hook 223. In the inner space of the hook 223, the strength of the hook 223 is enhanced. In this embodiment, the cross section of the protrusion 224 is triangular.

In order to limit the length of the screw 10 screwed into the threaded sleeve 23 and prevent damage caused by excessive screwing of the screw 10 into the hook claw 223, the side wall of the other opposite side of the support portion 11 extends in the direction of the deformation portion 22, and the protruding portion 213, When the expansion screw is in use, the end of the protruding portion 213 bears against the threaded sleeve 23 to limit the length of the screw 10 screwed into the threaded sleeve 23 .

The expansion screw for the wall plate provided by the utility model, by cooperating with the thread of the threaded sleeve, drives the middle part of the deformation part to bulge outward with the first deformation seam and the second deformation seam as the end points, forming a hook claw that hooks and presses against the wall plate. On the back, the expansion sleeve is fixed on the siding, and the holes on the siding are not stressed, which will not cause damage to the siding, with low requirements for operators and less difficulty in construction.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present utility model, and its purpose is to allow those who are familiar with the technology to understand the content of the present utility model and implement accordingly, and cannot limit the scope of protection of the present utility model with this. Equivalent transformations or modifications made according to the spirit of the present invention shall all fall within the protection scope of the present invention.

Claims

An expansion screw for a wall plate, comprising a screw and an expansion sleeve, wherein the expansion sleeve comprises a support part, a deformation part and a threaded sleeve connected in sequence, and is characterized in that:

The support part is a hollow right quadrangular prism, and the deformation part is formed by extending from a side wall on an opposite side of the support part to the direction of the threaded sleeve, and the interior of the threaded sleeve is provided with a matching screw. Internal thread, a first deformation seam is formed at the connection between the deformation part and the support part, and a second deformation seam is formed at the connection between the deformation part and the threaded sleeve;

In use, the screw is screwed into the threaded sleeve after passing through the support part and the deformation part, and the middle part of the deformation part is driven to the first deformation seam by the thread cooperation with the threaded sleeve. The end point of the second deformation seam is bulged outward, forming a hook to hook and press against the back of the wall plate, so as to fix the expansion sleeve on the wall plate.
The expansion screw for a wall plate according to claim 1, wherein a support rib is provided on the outer wall of the support portion, and the support rib extends along the axial direction of the support portion.
The expansion screw for a wall plate according to claim 2, characterized in that: there are at least two support ribs, and the two support ribs are distributed on a side wall on an opposite side of the support portion.
The expansion screw for a wall plate according to claim 3, characterized in that: there are four support ribs, and the four support ribs are distributed on four sides of the support portion.
The expansion screw for a wall plate according to claim 1, wherein the end portion of the support portion extends outward in a direction perpendicular to the axial direction of the support portion to form a disk-shaped flange.
The expansion screw for a wall plate according to claim 1, wherein the length of the support portion is 0.95-1.05 times the thickness of the wall plate.
The expansion screw for a wall plate according to claim 6, wherein the length of the support portion is equal to the thickness of the wall plate.
The expansion screw for a wall plate according to claim 1, wherein the inner wall of the deformation part is provided with a protrusion protruding inward, the protrusion is close to the middle part of the deformation part, and the expansion screw In use, the protrusion fills the inner space of the tip of the hook for enhancing the strength of the hook.
The expansion screw for a wall panel according to claim 8, wherein the cross section of the protrusion is a triangle.
The expansion screw for a wall plate according to any one of claims 1 to 9, wherein the side wall of the other opposite side of the support portion extends in the direction of the deformation portion to form a protruding portion, When the expansion screw is in use, the end of the protruding portion bears against the threaded sleeve, so as to limit the length of the screw screwed into the threaded sleeve.