JP6278471B2 - Screw receiving member, holding member - Google Patents

Description

  The present invention is a method for screwing a screw into a mounting hole previously drilled in a wall plate and fixing it when attaching a holding member for various instruments or equipment to the wall plate of the hollow wall by screwing. The present invention relates to a screw receiving member. Examples of the various instruments include handrails, towel hangers, showerheads in the bathroom, and the like. The holding member is a member for fixing or holding these instruments on the wall surface. The present invention is particularly suitable for application to a wall plate made of a hard resin material having a thin plate thickness, such as a wall material used for a unit bath.

In recent years, against the background of aging, there has been a growing demand for handrails to be provided at various locations in a house. In particular, handrails in bathrooms are indispensable equipment. In addition, there is an increasing need to install facilities such as a shower head and a mirror at a low position in consideration of the convenience of elderly people. In the case of a newly built house or the like, it is possible to screw with sufficient strength even if the wall plate is thin by designing it so that the structural material is arranged on the back side of the wall plate at the position where the holding member is to be attached. In the case of a unit bath, it is also possible to assemble and install the holding member attached to the wall plate in advance. However, with the aging of residents, needs for handrails to existing houses, retrofitting and expansion of various facilities, and changing mounting positions are expanding.

When retrofitting to an existing house, etc., if the wall to which the holding member is to be attached has sufficient thickness and strength for the required screw length, or if the structural material is located on the back of the wall The retaining member can be screwed directly to the wall. However, in the case of a hollow wall in which the wall plate is thin and no structural material is located on the back surface, the tip of the screw penetrates the wall material, and the holding member cannot be attached with sufficient strength. In this case, since the construction for removing the wall plate once and adding the structural material to a necessary portion requires a great deal of cost and time, such a screw receiving member is generally used.

As a screw receiving member used for the above-described purposes, a member having a flange and a bent arm that can be expanded in a pantograph shape, such as a deformable fastening device disclosed in Patent Document 1, is flexible and elastic. Products that are integrally molded with a synthetic resin material such as plastics are widely used. FIG. 1 to FIG. 4 are side views illustrating the configuration of a conventional screw receiving member 1. FIG. 5 is a perspective view of the holding member B of various instruments X using the screw receiving member 1 to the wall plate A with screws N. It is process drawing which shows the process at the time of attachment.
Japanese Laid-Open Patent Publication No. 6-10922

In the construction, until the flange 18 comes into contact with the wall plate A, the screw receiving member 1 in which the bent arm M is closed as shown in FIG. After the insertion, the screw N is screwed in a state where the screw hole of the holding member B is held in alignment with the through hole 11 of the flange 18. After the screw N is screwed into the through-hole 11, the tip of the screw N penetrates into the hinge hole 16 provided in the central hinge 15 of the bent arm M, and the bent arm M gradually becomes a pantograph shape as it advances. To expand. As the screw N is further screwed in, the pressing surface 13a of the rear arm 13 of the bending arm M comes into contact with the back surface of the wall plate A, and in the state where the screw N is completely screwed into the screw hole, When the arm M strongly presses the back surface of the wall plate A, the fixing of the holding member B to the wall plate A is completed.

  By the way, in the screw receiving member of the prior art, until the bent arm M that has spread sufficiently presses the back surface of the wall plate A, the so-called “co-rotation” in which the screw receiving member 1 itself rotates by the rotation of the screw N occurs. Then, the screw N is not screwed into the through hole 11 of the screw receiving member 1. Therefore, the illustrated general screw receiving member 1 is provided with a plurality of co-rotation prevention plates 17 on the outer surface of the cylindrical body 10 in such a manner that the lower end is joined to the flange 18, and the screw receiving member is driven into the wall plate A. At the same time, the co-rotation prevention plate 17 bites into the wall plate A to prevent co-rotation.

  However, the conventional screw receiving members that have been commercialized and used are mainly for wallboards made of gypsum board, wooden plywood and the like. If the wall board A is a soft plywood such as a plaster board or a plywood board, the co-rotation prevention plate 17 functions easily by biting into the wall board A when penetrating into the mounting hole A1, but the wall board A is cracked. May be caused. On the other hand, when the wall plate A is made of a hard material, the co-rotation prevention plate 17 integrally formed of a synthetic resin material is deformed when driven into the mounting hole A1, and cannot sufficiently exhibit the co-rotation prevention function. There is a fear. Moreover, when it bites into the wall board A without deform | transforming, there exists a possibility of causing a crack to the wall board A again.

In particular, the wall plate of the unit bath is made of a hard synthetic resin plate, and cracks that cause water leakage are particularly avoided. Therefore, at the construction site, if the structural material is forcibly inserted into the space behind the wallboard through a small work hole on the ceiling of the existing unit bath, or if the work space is too narrow, it is necessary to remove the wallboard from the joint. Countermeasures such as screwing the holding member are performed. In any case, it took time and money, and there was a case where it was unavoidable to give up handrails to the bathroom and change the position of the shower head.

  The present invention solves the problems of the screw receiving member of the prior art and can effectively prevent co-rotation even when applied to a hollow wall made of a relatively thin hard wall plate. It is an object of the present invention to provide a screw receiving member improved so as not to cause it, and to provide a new structure of a holding member to be fixed using the screw receiving member.

  In order to solve the above problems, the screw receiving member according to the present invention has the following configuration.

That is, the invention according to claim 1 of the present invention is a screw receiving member for attaching a holding member of an arbitrary equipment by screwing to a mounting hole provided in a wall plate of a hollow wall, and is inserted into the mounting hole And a fixing plate that suppresses rotation of the anchor, the anchor having a first through hole in the axial direction and a first coupling surface on a surface provided on one end side of the cylindrical body And a pair of bent arms that are provided on the other end side of the cylindrical body and can be expanded in a substantially pantograph shape. The fixing plate has a flat surface on the front surface and the first surface on the back surface. A second through-hole coaxial with the through-hole and a second coupling surface that couples with the first coupling surface by fitting the flange with each other, and a non-slip on the entire back surface excluding the concave portion Affixing a packing material consisting of a rubber sheet Characterized by comprising.

As the packing material, a material having both waterproof properties and slip resistance, for example, a rubber sheet is suitable. According to such a configuration, the entire back surface of the fixing plate that comes into contact with the wall plate surface is covered and closely adhered with the rubber sheet. Therefore, the cylinder is passed through the first and second through holes in a state where the holding member is pressed against the fixing plate at the time of construction. By screwing the body into the body, it is effectively prevented that the fixing plate rotates together with the anchor. Moreover, after completion of the construction, the rubber sheet literally becomes a packing material between the wall surface and the fixing plate, and prevents water from entering the back surface of the wall plate through the gap between the mounting hole and the anchor. Therefore, a high waterproof effect can be expected even in the case of retrofitting handrails or the like that apply a load in a bathroom, particularly in a unit bath in which a thin wall board is used.

  Since the anchor of the screw receiving member according to the present invention does not have the co-rotation prevention plate provided in the screw receiving member of the prior art, it is an attachment in which a wall-like anchor is formed by closing a bent arm and forming a bullet-like anchor When inserting into the hole, no particular resistance is generated, and there is no possibility of causing cracks around the mounting hole of the wall plate by the co-rotation prevention plate. And the joint rotation of the anchor that occurs when a screw is screwed into the anchor is prevented by the fixing plate.

Specifically, the anchor after insertion into the mounting hole has a flange exposed on the wall plate surface, and a first coupling surface is provided on the surface of the flange. When the fixing plate is fitted in such a manner that the concave portion on the back surface thereof covers the flange, the second coupling surface provided in the concave portion is coupled to the first coupling surface, and at the same time, the first through hole of the flange and the fixing plate The second through holes coincide. The operator aligns the screw hole provided in the desired holding member with the second through hole, and then screwes the screw into the screw hole in a state where the holding member is pressed against the fixing plate . As a result, the holding member is fixed to the wall plate surface with the fixing plate interposed therebetween.

When the screw is screwed into the screw hole, the anchor tries to rotate together with the rotation of the screw, but the fixing plate pressed against the wall plate by the holding member is made of a rubber sheet with anti-slip properties. It is fixed to the wall surface by friction between the wall plate and the rubber sheet.
Since the first coupling surface of the flange is coupled to the second coupling surface of the concave portion of the fixing plate and the anchor and the fixing plate are integrated, the joint plate does not rotate as long as the fixing plate does not move, and it is bent as the screw advances The holding member is completely fixed when the arm sufficiently presses the back surface of the wall plate.

Next, the invention described in claim 2 is the screw receiving member according to claim 1, wherein the first coupling surface is the first through hole, and the second coupling surface is the second. It is characterized by comprising radial tooth molds that can be meshed with each other with the through-holes at the center.

  The first and second coupling surfaces may be configured to be easily coupled when the fixing plate is put on the flange. For example, the coupling surfaces may be provided with concavities and convexities that fit together. . However, if both the coupling surfaces are formed in a radial tooth shape that meshes and couples with each other, the flange and the fixing plate can be coupled in any direction of 360 degrees. Therefore, the operator does not need to consider the direction of covering the fixing plate during construction, and the work efficiency can be improved.

Finally, the invention described in claim 3 is a holding member for attaching an arbitrary device to a wall plate of a hollow wall, and an anchor for fixing the holding member by screwing to an attachment hole provided in the wall plate. The anchor includes a cylindrical body having a first through hole in the axial direction, a flange having a first coupling surface on a surface provided on one end side of the cylindrical body, A pair of bent arms provided on the other end side of the cylindrical body that can be expanded in a substantially pantograph shape, and the holding member is provided on a mounting surface to the wall plate and is coaxial with the first through hole. The second through hole and a recess provided with a second coupling surface coupled to the first coupling surface by fitting the flange, and an anti-slip on the entire mounting surface to the wall plate excluding the concave Affixed with a packing material made of rubber sheet And wherein a mounting member set.

The screw receiving member according to the invention described in the first and second claims comprises a set of an anchor and a fixing plate, but the fixing plate is not necessarily an independent member. That is, if the holding member itself to be attached to the wall plate has a configuration of a fixed plate, it is possible to prevent co-rotation even if the holding member is screwed directly to the anchor inserted into the wall plate. Specifically, a concave portion having a second through hole and a second coupling surface is standardized and formed in advance on the surface to be brought into contact with the wall surface of the holding member.

  When the screw receiving member according to the present invention is applied, a holding member for equipment such as a handrail can be easily attached to the arbitrary position of the hollow wall of the existing house by screwing. Even if the wall plate is thin and there is no structural material suitable for screwing on the back side, it can be screwed without causing co-rotation of the anchor, so the wall plate can be removed or a structural material added once In addition, there is an effect of preventing damage to the wall plate and improving the waterproofness of the mounting portion. In particular, it is possible to retrofit handrails on the wall of existing unit baths, add showerhead receptacles, and change the installation position in a short time and at low cost, and promote the renovation of existing houses adapted to an aging society. It is effective for.

(First embodiment)
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 6 is a side view showing the configuration of the anchor 1 and the fixing plate 2 of the screw receiving member according to the first embodiment of the present invention, FIG. 7 is a plan view of the anchor 1, FIG. 8 is a bottom view thereof, and FIG. FIG. 10 is a plan view of FIG.

  The screw receiving member according to the first embodiment includes a combination of an anchor 1 and a fixing plate 2. Compared with the conventional screw receiving member shown in FIG. 1, the anchor 1 has no co-rotation prevention plate 17 and is provided with a first coupling surface 19 in which a radial tooth mold 19 a is formed on the lower surface of the flange 18. The only difference is that other configurations are common. The anchor 1 has a substantially disc-shaped flange 18 at the lower end of a substantially cylindrical cylinder 10, and a first through hole 11 is provided in the axial direction of the cylinder 10 from the center of the flange 18. At the upper end of the cylindrical body 10, a pair of rear arms 13 protrudes upward at positions opposed to both ends of the diameter, and each of them is connected to the forearm 12 via an arm hinge 14. By connecting with a central hinge 15 on the axis of the body 10, an integrated bending arm M is formed as a whole. The cylindrical body 10, the flange 18, and the bending arm M can be integrally molded with a synthetic resin material such as plastic having flexibility and elasticity.

When inserting the anchor 1 into the wall plate, as shown in FIG. 4, when the pair of forearms 12 are bent downward by the central hinge 15 and the upper surfaces thereof are brought into contact with each other, the rear arm 13 stands almost vertically. 1 has a bullet-like shape as a whole. However, the rear arm 13 is configured to be slightly longer than the forearm 12, and the arm hinge 14 is provided with a thinning 14a so that a deployment force acts in a direction to return the central hinge 15 to the expanded state. After the bent arm M of the anchor 1 passes through the wall plate, the central hinge 15 moves upward and the bent arm M is slightly opened.

When the screw N screwed into the first through hole 11 of the anchor 1 after being inserted into the wall plate is further rotated and advanced, the tip of the screw N penetrates into the hinge hole 16 on the lower surface of the central hinge 15. Since the diameter of the hinge hole 16 is slightly smaller than the diameter of the screw N, the tip of the screw N pushes up the central hinge 15 while penetrating through the hinge hole 16, and this is bent upward from the bent state. The entire bent arm M is expanded in a substantially pantograph shape.

  On the other hand, the fixing plate 2 has a configuration that does not exist in the conventional screw receiving member. In the present embodiment, as shown in FIGS. The side surface of the anchor 1 shown in FIG. 9, that is, the surface that abuts against the wall plate, has a diameter and depth that allow the flange 18 to be flush with the second through hole 21 corresponding to the first through hole 11. A circular concave portion 20 is provided, and a radial tooth mold 22a is formed on the bottom surface thereof to mesh with and connect to the radial tooth mold 19a formed on the first coupling surface 19. Further, a packing material 25 made of a rubber sheet is stuck on the entire surface of the anchor side surface 23 of the fixing plate 2 excluding the recess 20. In the state in which the flange 18 is completely fitted into the recess 20, the thickness of the flange 18 is completely accommodated to the depth of the recess 20, so that the entire surface of the packing material 25 adheres closely to the surface of the wall plate A. Configure as follows.

FIG. 11 is a cross-sectional view showing stepwise the construction process for attaching the holding member to the hollow wall by applying the screw receiving member according to the first embodiment. (1) shows a step of inserting the anchor 1 into the mounting hole A1 provided in the wall plate A. (2) shows a step of contacting the holding member B after the fixing plate 2 is put on the flange 18 of the inserted anchor 1. (3) expands the bending arm M of the anchor 1 by screwing the screw N into the screw hole provided in the mounting portion B1 of the holding member B and pressing it against the central hinge 15 of the bending arm M. A process is shown. At this time, since the fixing plate 2 pressed against the wall plate by the holding member is in close contact with the wall plate by the packing material 25 made of a rubber sheet having anti-slip properties, the fixing plate 2 is fixed to the wall surface by friction between the wall plate and the packing material 25. Furthermore, since the flange 18 is combined and integrated with the fixing plate 2, the rotation of the screw N prevents the anchor 1 from rotating together. (4) shows a process in which the holding member B is fixed to the wall plate A, and various instruments X are attached to the holding member B. When the screw N is screwed in until the head comes into contact with the mounting portion B1, the bent arm M further expands, and the pressing surface 13a of the rear arm 13 presses the back surface of the wall plate A, so that the anchor 1 becomes a wall. At the same time, the holding member B is fixed to the surface of the wall plate A. In addition, although the structure of the attachment part of the various instruments X is arbitrary and it is assumed in this embodiment that the various instruments X are attached to the wall board A via the holding member B, the attachment parts B1 are attached to the various instruments X themselves. It is also possible to attach directly without using the holding member B.

(Second embodiment)
FIG. 12 is a cross-sectional view showing the configuration of the screw receiving member and the holding member C according to the second embodiment to which the mounting member set according to claim 3 is applied. In this embodiment, the anchor 1 is the same as that of the first embodiment, the concave portion 20 is provided on the surface of the mounting portion C1 of the holding member C that contacts the wall plate A, and the packing material 25 is pasted on the entire other surface. . If the manufacturer of the various instruments X and the holding member C can standardize the configuration of the anchor 1 and the mounting portion C1, the fixing plate 2 as an independent member is not necessary, and the anchor can be manufactured at a low cost in the installation of all the various instruments X. Since 1 can be applied, the efficiency and economic rationality of on-site construction is improved.

As mentioned above, although the embodiment regarding the screw receiving member according to the present invention and the holding member to which the configuration of the present invention is applied has been described with reference to the drawings, the present invention is not limited to the above-described embodiment, and is improved. Improvements or modifications can be made within the scope of the object or the technical idea of the present invention, and they belong to the technical scope of the present invention.

  INDUSTRIAL APPLICABILITY The present invention can be used in an installation work for fixing various instruments to a hollow wall surface of a facility such as a house, and the holding member for various instruments can be used even on a hollow wall surface where no appropriate support material exists on the back side of a thin wall plate Can be attached to any position by screwing. This is particularly effective when retrofitting equipment such as a handrail or shower head on the wall surface of an existing unit bath.

Side view of the screw receiving member according to the prior art (expanded state) Plan view of a screw receiving member according to the prior art Bottom view of a conventional screw receiving member Side view of screw receiving member according to prior art (closed state) Sectional drawing which shows the attachment process of the holding member using the screw receiving member which concerns on a prior art in steps The side view (expanded state) of the screw receiving member concerning a first embodiment of the present invention. The top view of the anchor of the screw receiving member concerning a first embodiment of the present invention. The bottom view of the anchor of the screw receiving member concerning a first embodiment of the present invention. The bottom view of the fixing plate of the screw receiving member which concerns on 1st embodiment of this invention. The top view of the fixing plate of the screw receiving member which concerns on 1st embodiment of this invention. Sectional drawing which shows the attachment process of the holding member using the screw receiving member which concerns on 1st embodiment of this invention in steps. Sectional drawing which shows the attachment state of the screw receiving member and holding member which concern on 2nd embodiment of this invention.

A Wall plate A1 Mounting hole B Holding member B1 Mounting portion C Holding member (second embodiment)
C1 mounting part (second embodiment)
M bending arm N screw X various instruments 1 screw receiving member 10 cylindrical body 11 first through hole 12 forearm 13 rear arm 13a pressing surface 14 arm hinge 14a thinning 15 central hinge 16 hinge hole 17 joint rotation prevention plate 18 flange 19 first One coupling surface 19a Radial tooth pattern (flange side)
2 Fixing plate 20 Recess 21 Second through hole 22 Second coupling surface 22a Radial tooth shape (fixing plate side)
23 Anchor side surface 24 Mounting member side surface 25 Packing material

Claims (3)

A screw receiving member for attaching a holding member of an arbitrary equipment by screwing to a mounting hole provided in a wall plate of a hollow wall, comprising: an anchor inserted into the mounting hole; and a fixing plate for suppressing rotation of the anchor The anchor includes a cylindrical body having a first through hole in the axial direction, a flange having a first coupling surface on a surface provided on one end side of the cylindrical body, and a second end side of the cylindrical body. A pair of bent arms that can be expanded in a substantially pantograph shape, and the fixing plate has a flat surface on the front surface side, a second through hole coaxial with the first through hole, and the A packing material made of a rubber sheet having a non-slip property is attached to the entire back surface except for the concave portion provided with a concave portion provided with a second coupling surface coupled with the first coupling surface by fitting a flange. characterized in that, characterized in that to comprising Di-receiving member. The first coupling surface is formed of a radial tooth mold capable of meshing and coupling to each other, the first through hole being the center, and the second coupling surface being centered on the second through hole. The screw receiving member according to claim 1. A mounting member set comprising: a holding member for attaching an arbitrary device to a wall plate of a hollow wall; and an anchor for fixing the holding member to a mounting hole provided in the wall plate by screwing. Is a cylindrical body having a first through hole in the axial direction, a flange having a first coupling surface on the surface provided on one end side of the cylindrical body, and a substantially pantograph shape provided on the other end side of the cylindrical body A pair of bending arms that can be expanded to the wall plate, and the holding member has a second through-hole coaxial with the first through-hole and a flange fitted to the mounting surface to the wall plate A packing material made of a rubber sheet having an anti-slip property is attached to the entire mounting surface to the wall plate except for the concave portion, and having a concave portion provided with a second coupling surface coupled to the first coupling surface. A mounting member set characterized by comprising: