TWI741670B - Stone anti-falling upside down screw and installation method thereof - Google Patents

Abstract

This creation is an upside-down screw for fixing the stone to the ceiling and its installation method. The upside-down screw includes a screw, an expansion sleeve, and an anti-falling elastic member; the expansion sleeve sets the screw and includes plural expansion pieces and A clamping piece, the screw can push the clamping piece towards the expansion piece after rotating, and when the clamping piece moves, it will expand the expansion piece outwards, and then fix it in the ceiling. This creation can easily ensure the expansion through the rotating operation method The film has been stretched to the required extent, and then a certain fixation is achieved. Even if this creation falls off from the ceiling, because the abutment part of the anti-falling elastic piece is inclined downward and outward and cannot pass through the perforation of the stone, it can effectively prevent the creation from falling and cause damage, thereby greatly improving safety. Finally, if you want to change the distance between the stone and the ceiling, you only need to cut the screw directly, which is convenient for material preparation and carrying.

Description

Stone anti-falling upside down screw and installation method thereof

This creative department relates to a screw for fixing stone and its installation method, especially an upside down screw for fixing stone to the ceiling and its installation method.

In today's society, stone is widely used on exterior walls, interior walls, and ceilings of buildings to show an elegant appearance and taste. However, the disadvantage of stone is that it often has a certain weight, so it is not easy to fix on the wall, and once it falls off, it may cause major danger, especially when it is installed on the ceiling. Once it falls, it may cause major accidents. When the prior art stone is combined with a ceiling or a downwardly inclined wall, a special upside-down fixing device is used to fix the stone.

Please refer to Figures 13 and 14, the prior art upside down fixing device includes a rod 91 and a compression cone 92; the top of the rod 91 protrudes with a plurality of expansion pieces 911, the expansion pieces 911 are arranged around and spaced apart ; The pressing cone 92 penetrates the center of the spreading pieces 911 with its pointed cone downward.

In use, the rod 91 and the tightening cone 92 are inserted into the mounting hole 101 of the ceiling 100 together, and the flat bottom of the tightening cone 92 is pressed against the bottom of the mounting hole 101, and then the rod is hit with a hammer The bottom end of 91, forcing the rod 91 to move toward the pressing cone 92, and therefore the expansion piece 911 surrounding the pressing cone 92 will be stretched and deformed along the tapered surface of the pressing cone 92, and then pressed against the installation The wall of the hole 101 is used to tightly fix the rod 91 to the ceiling 100, and the head 912 at the bottom end of the rod 91 is used to support the stone 200.

However, the disadvantages of the aforementioned upside-down fixing device are:

First, it is difficult to grasp how much percussion force is needed to stretch the expansion piece 911 to the extent that it can be tightly fixed, and the expansion piece 911 is hidden in the ceiling 100, and even the user’s sight is still It is blocked by the stone 200, so even if the expansion piece 911 is not completely expanded and deformed, it is quite difficult for the user to notice. Therefore, it is possible that it is still fixed in the ceiling 100 at the moment of construction, but it loses its fixation and falls after a short while. The stone 200 also loses support.

Second, as mentioned above, once the rod 91 loses its fixation, it may fall directly from a high altitude. Although the volume of the rod 91 is not as large as the stone 200, the metal rod 91 falling from a high altitude is still likely to cause serious problems. Hurt, so it still must not be careless.

Third, as mentioned above, the bottom end of the rod body 91 is a head 912 with a larger outer diameter, and the top end is a spreading piece 911. Therefore, the length of the rod body 91 is fixed, that is, only the stone 200 can be fixed to the ceiling 100. For a specific distance, if you want to increase or decrease the distance between the stone 200 and the ceiling 100, you need to use rods 91 of different sizes. Therefore, it is quite inconvenient in material preparation and use, and users need to carry more rods. 91.

Therefore, the prior art stone upside-down fixing device has major safety defects and is inconvenient to use, and it needs to be improved.

In view of the aforementioned shortcomings and deficiencies of the prior art, this creation provides an anti-falling stone screw and its installation method, which can reliably achieve fixation, has the function of anti-falling, and can easily adjust the size.

In order to achieve the above creative purposes, the technical means used in this creation is to design a stone falling-proof upside down screw, which includes: a screw rod, the opposite ends of which are a top end and a bottom end respectively; a head part, which is set in The bottom end of the screw; An expansion sleeve is sleeved on the top end of the screw and includes a sleeve portion, the inner wall surface of which is provided with an internal thread, and the sleeve is screwed on the top end of the screw; a plurality of expansion pieces protrude At one end of the sleeve portion, and the expansion pieces are arranged around and spaced apart; a pressing member is movably arranged in the sleeve portion and selectively moves between the expansion pieces; the screw follows By rotating relative to the sleeve portion, the pressing member can be pushed toward the spreading pieces, and when the screw pushes the pressing piece between the spreading pieces, the pressing piece will gradually expand outwards Open these props.

Furthermore, the stone anti-falling screw further includes an anti-falling elastic member connected to the screw rod and having at least one abutting portion, the at least one abutting portion facing toward the screw rod The bottom end obliquely extends radially outward, and can be bent toward the central axis of the screw.

In order to achieve the above creative purpose, this creation further provides a method for installing a stone anti-falling screw, which screwed a spreading sleeve to a top end of a screw; the spreading sleeve includes a sleeve part And a plurality of expansion pieces, the sleeve portion is sleeved and screwed on the top end of the screw, and the sleeve portion is provided with a pressing member; the expansion pieces protrude from one end of the sleeve portion and surround the interval Set; then the top end of the screw and the expansion sleeve are inserted into a mounting hole of the ceiling, and then the screw is rotated so that the screw pushes the urging member toward the expansion pieces, and the urging member During the movement, the spreading pieces are gradually expanded outwards, so that the spreading pieces are pressed against the wall of the mounting hole; a head part is sleeved on a bottom end of the screw, and the head part is upward The support rests against a stone.

Further, the method for installing the stone anti-falling screw, which further includes an anti-falling elastic member, the anti-falling elastic member is connected to the screw, the screw, the expansion sleeve, and the anti-falling elastic The screw and the expansion sleeve are inserted through the mounting hole of the ceiling after the stone is penetrated together; and the anti-falling elastic member has at least one abutting portion, and the at least one abutting portion faces the screw The bottom end extends radially outward and obliquely. When the anti-falling elastic member passes through a perforation of the stone, the at least An abutting portion abuts against a lower opening peripheral edge of the perforation of the stone and thus bends toward a central axis of the screw, and after the anti-falling elastic member passes upward through the perforation of the stone, the anti-falling elastic member The at least one abutting portion of the device will spring back to its original position due to its elasticity.

The advantages of this creation are:

First, this creation is to open the expansion sleeve for fixing by rotating (screw), and the way of rotation is easier to quantify than the prior art hammer hammering. In other words, this creation can be designed to rotate The specific number of turns is enough to expand the expansion piece of the expansion sleeve to the required degree, or to judge whether the expansion piece has been expanded to the required degree by the torque of the rotating screw. As far as the expansion piece located in the ceiling, the above method can also be used to ensure that the expansion piece has been expanded to the required degree, thereby achieving a reliable fixing effect.

Second, even if the creation and the ceiling lose their fixation due to various reasons, during the process of the creation falling, the abutment part of the anti-falling elastic piece is inclined downward (bottom end) and cannot pass through the perforation of the stone. Therefore, this creation will only fall until the abutting part of the anti-falling elastic member hits the stone downwardly, and then can no longer pass through the stone. This can effectively prevent the creation from falling and cause damage, thereby greatly improving safety.

Third, because the expansion sleeve is only threaded on the screw, if you need to increase or decrease the distance between the stone and the ceiling, you only need to cut the screw at the construction site to adjust the length, and then expand the sleeve. Just set the screw on the screw, so you don't need to prepare different sizes of this creation, but only need to adjust on the spot according to the required length of the construction site, so as to facilitate the preparation and carrying of materials.

100: Ceiling

101: mounting hole

200: Stone

201: Piercing

300: hand tools

301: Eccentric convex column

400: power tools

500: Tool head

501: Eccentric convex column

10: Screw

11: top

12: bottom

20: Head part

21: Tool hole

30: Open the sleeve

31: Sleeve

32: Spread the film

321: embossing

33: Compression

40: Anti-falling elastic parts

41: abutment

91: Rod

911: Spread the film

912: head

92: Compression Cone

Figure 1 is the three-dimensional appearance of this creation.

Figure 2 is an exploded view of the components of this creation.

Figure 3 is a schematic diagram of the screw cutting of this creation.

Figure 4 is a schematic diagram of the bending and deformation action of the anti-falling elastic piece of this creation through the stone.

Figures 5 and 6 are cross-sectional schematic diagrams of the screw spreading and spreading sleeve of the invention.

Figures 7 and 8 are schematic cross-sectional diagrams of this creation accidentally falling off the ceiling.

Figures 9 and 10 are schematic diagrams of the hand tools used in this creation.

Figure 11 is a schematic diagram of the power tool used in this creation.

Figure 12 is a perspective view of another embodiment of the creation.

Figures 13 and 14 are cross-sectional schematic diagrams of the compression cone spreading the spreading piece in the prior art.

In the following, in conjunction with the drawings and the preferred embodiments of this creation, the technical means adopted by this creation to achieve the predetermined creation purpose are further explained.

Please refer to FIGS. 1, 2, and 7, the stone falling-preventing screw of the present creation includes a screw 10, a head part 20, a spreading sleeve 30 and an elastic member 40. This creation is used to penetrate a stone 200 and fix the stone 200 on the ceiling 100. The ceiling 100 is not limited to the horizontal ceiling 100, but also includes the ceiling 100 that is inclined downward.

The opposite ends of the aforementioned screw 10 are a top end 11 and a bottom end 12 respectively. The top end 11 refers to the end embedded in the ceiling 100 and the bottom end 12 refers to the end through which the stone 200 is penetrated. In this embodiment, the entire screw 10 has threads, but it is not limited to this. In other embodiments, it is only necessary to have threads at the top end 11, and the threads only need to extend from the top end 11 to the bottom end 12. Extend a certain distance, and the length of the screw 10 can be adjusted by cutting.

The aforementioned head member 20 is sleeved on the bottom end 12 of the screw 10. In this embodiment, the head member 20 has internal threads and is screwed on the bottom end 12 of the screw 10 to facilitate installation, but not However, in other embodiments, the head part 20 can also be integrally formed on the screw 10.

In this embodiment, the bottom surface of the head member 20 is provided with at least one eccentric tool hole 21 (the tool hole 21 can be one, two, four, etc.). Please refer to FIGS. 9 and 10 for further details. A hand tool 300 with at least one eccentric protrusion 301 is inserted into the eccentric tool hole 21 to rotate the head part 20, whereby the head part 20 can be designed to be circular, so that the head part 20 is to be grooved in the stone 200 When embedded to prevent the head part 20 from protruding from the stone 200, the groove on the stone 200 can be quite close to the outline of the head part 20 (that is, the inner diameter of the groove can be quite close to the outer diameter of the head part 20), so as to achieve a beautiful effect On the contrary, please refer to Fig. 12, if the head part 20 is polygonal, a sleeve (for example, a hexagonal sleeve) needs to be sleeved on the head part 20 to rotate the head part 20. As a result, the groove on the stone 200 is bound to It will be larger than the outline of the head part 20 for the sleeve to be inserted, not to mention that the polygonal head part 20 cannot fit into the circular groove of the stone 200, and there is bound to be a gap. Therefore, the polygonal head part 20 and the stone The groove of 200 is bound to have obvious gaps; therefore, the circular head member 20 of the present creation can be quite close to the groove of the stone 200 to greatly improve the appearance. However, it is not limited to this. In some cases, the polygonal head part 20 can still be used in this creation.

In addition, please further refer to FIG. 11, in order to rotate the head part 20 with the eccentric tool hole 21, the power tool 400 can also be used to match the tool head 500 of the corresponding shape to rotate the head part 20, wherein the tool head 500 also protrudes A plurality of eccentric protrusions 501 are used to penetrate the tool holes 21. Specifically, the number of eccentric protrusions 501 may be equal to or less than the number of tool holes 21. For example, the head part 20 has four tool holes 21 arranged in a cross, and the tool head 500 has two eccentric protrusions 501 and so on.

Please refer to FIG. 2, FIG. 5 and FIG. 6, the aforementioned expansion sleeve 30 is sleeved on the top end 11 of the screw 10, and includes a sleeve portion 31, a plurality of expansion pieces 32 and a pressing member 33.

The inner wall surface of the sleeve portion 31 is provided with internal threads, and the top end 11 of the screw 10 is sleeved and screwed. The expansion pieces 32 protrude from one end of the sleeve portion 31, and the expansion pieces 32 are circumferentially arranged at intervals. The pressing member 33 is movably arranged in the sleeve portion 31 and can be moved between the spreading pieces 32; the screw 10 can push the tightening toward the spreading pieces 32 as it rotates relative to the sleeve portion 31 When the pressing member 33 moves between the expansion pieces 32, it will gradually expand the expansion pieces 32 outward. In this embodiment, the compression piece 33 is tapered, and the outer diameter of the end of the pressing member 33 toward the top end 11 is smaller than the outer diameter of the end of the pressing member 33 toward the bottom end 12 (that is, from the perspective of the drawing, the pressing member 33 is narrow at the top and wide at the bottom. Cone-shaped), and the thickness of the expansion piece 32 is uniform, so that the expansion piece 32 is expanded by the movement of the conical pressing member 33, but it is not limited to this, and it can be changed to a pressing The outer diameter of the member 33 is the same, and the thickness of the expansion piece 32 is tapered along the direction from the top end 11 to the bottom end 12, so that the expansion piece can also be expanded by the movement of the pressing member 33 32. In addition, in this embodiment, embossing 321 is formed on the outer wall of the expansion piece 32 to increase the friction between the expansion piece 32 and the place where it abuts (hole wall).

Please refer to FIGS. 2 and 4, the aforementioned anti-falling elastic member 40 is connected to the screw 10 and has at least one abutting portion 41, which is radially outward toward the bottom end 12 of the screw 10 It extends obliquely and can be bent toward the central axis of the screw 10 due to an external force, but after the external force is removed, the abutting portion 41 will spring back due to elasticity. In this embodiment, the anti-falling elastic member 40 is a torsion spring, which is sleeved on the screw 10, and the center of the torsion spring surrounds and fits the outer thread of the screw 10, whereby the torsion spring can only pass through the rotating The screw 10 is screwed out in such a way that it cannot be directly separated from the screw 10 up and down; the anti-fall elastic member 40 has two abutting parts, and the two ends of the torsion spring are the two abutting parts 41, and both ends of the torsion spring are facing the screw 10 The bottom end 12 extends obliquely radially outward. However, the anti-falling elastic member 40 is not limited to a torsion spring.

When installing this creation, please refer to Fig. 3. First, cut the screw 10 to the required approximate length according to the distance between the stone 200 and the ceiling 100, and then screw the expansion sleeve 30 onto the top end 11 of the screw 10 Then, the screw 10, the expansion sleeve 30 and the anti-falling elastic member 40 are passed upward through the perforation 201 of the stone 200 together.

Please refer to FIG. 4, when the anti-falling elastic member 40 passes through the perforation 201 of the stone 200, the abutting portion 41 abuts against the peripheral edge of the lower opening of the perforation 201 of the stone 200 and thus bends toward the central axis of the screw 10, while waiting After the anti-falling elastic member 40 passes upward through the perforation 201 of the stone 200, the abutting portion 41 of the anti-falling elastic member 40 will spring back to the original position due to its elasticity, and therefore the end of the abutting portion 41 will be located at the end of the perforation 201 It is radially outside, so the anti-falling elastic member 40 can no longer pass through the through hole 201 downward.

Please refer to Figures 5 and 6, and then continue to push the creation upwards, pass the screw 10 and the expansion sleeve 30 through a pre-formed mounting hole 101 of the ceiling 100, and then rotate the screw 10 so that the screw 10 faces the support The expansion piece 32 of the opening sleeve 30 pushes the urging member 33, and the urging member 33 gradually expands the expansion pieces 32 outwards during the moving process, so that the expansion pieces 32 are pressed against the installation The hole wall of the hole 101 thereby makes the expansion sleeve 30 tightly fixed in the mounting hole 101, and the screw 10 screwed with the expansion sleeve 30 is therefore indirectly fixed to the ceiling 100 through the expansion sleeve 30.

Please refer to FIG. 7. Finally, the head part is threaded to the bottom end 12 of the screw 10 from below the stone 200, and is rotated to support upwards against the stone 200, and the installation is completed. Since the length of the screw 10 is pre-cut according to the distance between the stone 200 and the ceiling 100, the screw 10 does not protrude downward from the stone 200, or at least does not protrude too far, so as to achieve a beautiful effect.

In addition, in other embodiments, if the screw 10 and the head part 20 are integrally formed, the screw 10 can be directly cut to a precise length, and the screw 10 is rotated until the expansion piece 32 is opened, and the bottom of the screw 10 The head part 20 of the end 12 also just abuts against the stone 200, and this is also possible.

In addition, in other embodiments, under special circumstances, the screw 10 and the expansion sleeve 30 may be fixed to the ceiling 100 first, and then the perforation 201 of the stone 200 is aligned with the screw 10 and the screw 10 is sleeved upward. Finally, the head part 20 is used to thread the bottom end 12 of the screw 10 to abut and support the stone 200 upward.

This creation fixes the expansion sleeve 30 in the ceiling 100 by rotating the screw 10, and the way of rotation is easier to quantify. For example, this creation can be designed to rotate a specific number of turns that is enough to allow the expansion sleeve 30 to be supported. The opening piece 32 is stretched to the required degree, or the torsion force of the screw 10 is used to determine whether the opening piece 32 has been stretched to the required degree (feel the degree of tightening by hand or use a tool that can set the limit torque ), so even if the expansion piece 32 located in the ceiling 100 is not visible, the above method can be used to ensure that the expansion piece 32 has been expanded to the required degree, thereby achieving a reliable fixing effect.

In addition, please refer to Figures 7 and 8, even if the creation and the ceiling 100 lose their fixation due to various reasons, during the process of the creation falling, the abutting portion 41 of the anti-fall elastic member 40 is facing downward (bottom The end) is inclined outwards and cannot pass through the perforation 201 of the stone 200. Therefore, this creation will only fall to the abutting portion 41 and hit the stone 200 downwards, and then cannot pass the stone 200 downwards. This can effectively prevent the creation from falling And cause injury, thereby greatly improving safety.

Finally, if you need to increase or decrease the distance between the stone 200 and the ceiling 100, you only need to cut the screw 10 at the construction site to adjust the length, and then set the expansion sleeve 30 on the screw return screw 10, thereby There is no need to prepare different sizes of this creation, but only need to be adjusted on the spot according to the length required by the construction site, so as to facilitate material preparation and carrying.

In addition, in the case that the distance between the stone 200 and the ceiling 100 is determined, the screw 10 can also be manufactured in the factory to a corresponding length, so that the initial cutting step can be avoided, and the screw 10 can also be reduced. The thread length, at this time, the thread of the top end 11 of the screw 10 only needs to be enough to penetrate the screw into the expansion sleeve 30.

The above description is only the preferred embodiment of the creation, and does not limit the creation in any form. Although the creation has been disclosed in the preferred embodiment as above, it is not intended to limit the creation. Any technical field has Generally knowledgeable persons, without departing from the scope of this creative technical solution, can use the technical content disclosed above to make slight changes or modifications into equivalent embodiments with equivalent changes. However, any content that does not deviate from this creative technical solution is based on this Any simple modifications, equivalent changes and modifications made to the above embodiments by the technical essence of the creation still fall within the scope of the technical solution for creation.

10: Screw

11: top

12: bottom

20: Head part

30: Open the sleeve

31: Sleeve

32: Spread the film

321: embossing

40: Anti-falling elastic parts

41: abutment

Claims (11)

A stone anti-falling upside down screw, comprising a screw rod, the opposite ends of which are respectively a top end and a bottom end; a head part, which is sleeved on the bottom end of the screw; a spreading sleeve, which is sleeved on the The top end of the screw includes a sleeve portion, the inner wall surface of which is provided with internal threads, and the screw is sleeved on the top end of the screw; a plurality of expansion pieces protrude from one end of the sleeve portion, and the The expansion pieces are arranged around and spaced apart; an urging member is movably arranged in the sleeve portion and selectively moves between the expansion pieces; the screw can be turned toward the sleeve as it rotates relative to the sleeve portion When the expansion piece pushes the compression piece, and the screw pushes the compression piece between the expansion pieces, the compression piece will gradually expand the expansion pieces outward. The stone anti-falling screw of claim 1, further comprising an anti-falling elastic member connected to the screw rod and having at least one abutting portion, the at least one abutting portion facing the The bottom end of the screw extends obliquely radially outward, and can be bent toward the central axis of the screw. The stone fall-prevention screw of claim 2, wherein the fall-prevention elastic member is a torsion spring, which is sleeved on the screw rod and is inserted into the outer thread of the screw, and the fall-prevention elastic member has two The abutting portion and the two ends of the torsion spring are the two abutting portions, and both ends of the torsion spring extend obliquely and radially outward toward the bottom end of the screw. The stone falling-preventing screw according to any one of claims 1 to 3, wherein the pressing member is tapered, and the outer diameter of the end of the pressing member toward the top is smaller than that of the pressing member toward the bottom The outer diameter of one end of the end. The stone falling-preventing screw according to any one of claims 1 to 3, wherein the head part is sleeved and screwed on the bottom end of the screw. The stone falling-preventing screw according to any one of claims 1 to 3, wherein the outer wall surface of each expansion piece of the expansion sleeve is formed with embossing. The stone fall-preventing screw according to any one of claims 1 to 3, wherein the head part is circular, and the bottom surface of the head part is provided with at least one eccentric tool hole. A method for installing an anti-falling screw for a stone, which is to thread a spreading sleeve to a top end of a screw; the spreading sleeve includes a sleeve part and a plurality of spreading pieces, and the sleeve part covers The screw is screwed on the top end of the screw, and a pressing member is arranged in the sleeve portion; the spreading pieces protrude from one end of the sleeve portion and are arranged at intervals; then the top end of the screw and the The expansion sleeve is inserted into a mounting hole of the ceiling together, and then the screw is rotated so that the screw pushes the urging member toward the expansion pieces, and the urging member gradually expands outwards during the moving process The spreading pieces further make the spreading pieces abut against the wall of the mounting hole; a head part is sleeved at a bottom end of the screw rod, and the head part supports upwards and abuts against a stone. The method for installing a stone falling-preventing screw of claim 8, which further includes a falling-preventing elastic member connected to the screw, the screw, the expansion sleeve, and the falling-preventing elastic The screw and the expansion sleeve are inserted through the mounting hole of the ceiling after the stone is penetrated together; and the anti-falling elastic member has at least one abutting portion, and the at least one abutting portion faces the screw The bottom end extends radially outward and obliquely. When the anti-falling elastic member passes through a perforation of the stone, the at least one abutting portion abuts against a peripheral edge of a lower opening of the perforation of the stone and thus faces toward the screw. A central axis is bent, and after the anti-falling elastic member passes upward through the perforation of the stone, the at least one abutting portion of the anti-falling elastic member will spring back to its original position outward due to its elasticity. According to claim 8 or 9, the method for installing the stone falling-preventing screw, wherein the head part is threaded on the bottom end of the screw rod, and rotates relative to the screw rod until the head part abuts and supports the Stone. According to claim 8 or 9, the method for installing the screw for preventing falling of a stone, wherein the screw is screwed on the top of the screw according to the distance between the stone and the ceiling before the expansion sleeve is screwed. Cut to the required length, and then thread the spreading sleeve to the top of the screw.

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