JP3246470U - Plasterboard Fixing Brackets - Google Patents

Abstract

[Problem] To provide a fixing bracket that is composed of a single part rather than multiple separate parts, allows for smooth fixing to a plaster board, and maintains a good fixed state to the plaster board. [Solution] A metal fixing bracket P that can be fixed in a state where it is pressed against a plaster board wall W in a predetermined pressing direction, and is integrally equipped with a surface contact main body P1 that is pressed directly or indirectly against the plaster board wall W, and three insertion claws P2 that protrude from the periphery of the surface contact main body P1 in the pressing direction bent at approximately 90 degrees relative to the surface contact main body P1, and each insertion claw P2 is provided with one or more sawtooth-shaped barbs P3. [Selected Figure] Figure 5

Description

This invention relates to a fastening device that can be fixed to plasterboard.

As a building material for the interior walls of buildings, gypsum board is used because it has excellent heat and sound insulation properties, is inexpensive, and is easy to install. However, gypsum board has the disadvantage that it is difficult to use nails because the adhesive strength of nails is weaker than that of wood.

Therefore, a fastener is used in which the direction in which the fixing pins (pin nails) are driven into the gypsum board surface is set to an inclined direction rather than straight (vertical), and multiple fixing pins are driven into the surface at different inclinations. For example, Patent Document 1 proposes a fixture set that is mainly made of a fixture body having multiple guide holes formed therein for guiding each of the pin nails, and that is set so that when the pin nails are driven into the fixture along each guide hole, the driven pin nails spread out radially inside the gypsum board (see Patent Document 1, for example).

With this type of fixture, the pin nail is driven in a direction that is inclined relative to the surface to be attached and radially from the fixture body, which significantly increases the fastening force of the pin nail compared to when the nail (pin nail) is driven perpendicularly into the gypsum board, allowing the fixture body to be firmly fixed to the gypsum board.

Utility Model Registration No. 3184273

However, the mode of driving multiple fixing pins in different inclined directions requires multiple pin nails in addition to the mounting fixture body having guide holes that guide the driving direction of the fixing pins, which means that a large number of parts need to be prepared and multiple pin nails need to be driven into each mounting location, leaving room for improvement in terms of workability. Furthermore, if the timing of releasing the pin nail while driving it from a diagonally downward to a diagonally upward direction is incorrect, the pin nail will fall, which is also a factor that reduces workability.

The present invention focuses on these points, and its main objective is to provide a fastening device that is composed of a single part rather than multiple separate parts, that allows for smooth fastening to the plaster board, and that can maintain a good fastening state to the plaster board.

In other words, the plasterboard fixing bracket of this invention is a metal fixing bracket that can be fixed in a state where it is pressed against the plasterboard in a specified pressing direction, and is characterized by having a surface contact main body that is pressed directly or indirectly against the wall, and three insertion claws that protrude from the periphery of the surface contact main body in the pressing direction bent at approximately 90 degrees relative to the surface contact main body, and each insertion claw has one or more sawtooth-shaped barbs.

With such a fixing bracket, at least one of the three insertion claws that protrude from the periphery of the surface contact main body in the pressing direction enters the wall in an oblique position that is neither vertical nor horizontal, resulting in a good insertion state that is difficult to remove from the plasterboard. In particular, since each insertion claw has one or more sawtooth-shaped barbs, once inserted into the plasterboard and fixed, even if a force is applied to the fixing bracket to remove it from the plasterboard, the barbs will not easily remove the fixing bracket and a good fixed state can be maintained. In addition, the fixing bracket of this invention can be formed by applying appropriate processing such as pressing to a single metal plate, and compared to fixing brackets composed of multiple separate parts, it is easy to handle and the work of fixing to the plasterboard can be performed smoothly.

If the fixing bracket has four or more insertion claws around the periphery of the surface contact body, the insertion area of the insertion claws into the gypsum board will increase, and there is a risk that the area of the gypsum board surrounded by these insertion claws will be dug out. Also, if there are only one or two insertion claws, the load-bearing capacity and stability will be insufficient when hammered into the gypsum board to support other components. For this reason, the present invention employs a configuration with three insertion claws.

In particular, if the fixing bracket according to the present invention has three insertion claws evenly spaced around the periphery of the surface contact body, at least two or more insertion claws will enter the wall at an angle that is neither vertical nor horizontal when viewed from the front of the gypsum board, resulting in a good insertion state that makes it difficult for the claws to be pulled out of the gypsum board.

In addition, if the fixing bracket according to the present invention has a through hole in the center of the surface contact main body through which a fixing device other than the fixing bracket can be inserted, then by inserting the other fixing device into the through hole and fixing it to the gypsum board, a stronger fixed state can be achieved than when the fixing bracket is fixed to the gypsum board by itself.

According to this invention, at least one of the three insertion claws that protrude in the pressing direction from the periphery of the surface contact main body enters the wall in an oblique position that is neither vertical nor horizontal, providing a plasterboard fixing bracket that can maintain a good insertion state that is difficult to remove from the plasterboard.

FIG. 1 is an overall external view of a wall-mounted shelf using a shelf column according to an embodiment of the present invention. FIG. 2 is an overall external view of the rail in the embodiment. FIG. FIG. FIG. 2 is an overall external view of the fixing bracket according to the embodiment; FIG. 2 is an overall external view and a partially enlarged front view of the shelf column in the embodiment. FIG. 4A and 4B are diagrams showing each shelf column element in the embodiment. A diagram showing an upper shelf column element in the same embodiment. 4A and 4B are diagrams showing each shelf column element in the embodiment. 4A and 4B are diagrams showing each shelf column element in the embodiment. FIG. 13 is an enlarged perspective view of a portion relating to the connection between the shelf column elements in this embodiment. FIG. 2 is an overall external view of the bracket in the embodiment.

An embodiment of the present invention will be described below with reference to the drawings.

The fixing bracket P according to this embodiment can be used, for example, as shown in FIG. 1, when fixing a wall-mounted shelf X (system rack) to a wall without a base, i.e., a plasterboard wall W. As shown in FIG. 1, the wall-mounted shelf X can also be fixed to a wall with a base, i.e., a wall that is not made of plasterboard. In the following description, when the term "wall W" is used instead of "plasterboard wall W," the "wall W" is not limited to plasterboard, but also includes a wall that is not made of plasterboard (a wall with a base).

The wall-mounted shelf X is constructed by attaching brackets B to a base frame Y consisting of shelf posts 2 and rails 1, and attaching attachments to these brackets B, so that various components such as shelves T and pipes used for suspending items can be attached via these attachments.

The base frame Y is composed of a rail 1 that is fixed to a wall W in a recumbent position, and multiple shelf columns 2 (supports) that are fixed to the wall W with their upper ends hooked onto the rail 1. In this embodiment, each shelf column 2 is made by connecting shelf column elements 3A and 3B, which are integrally molded resin products, in the height direction, and will be described in detail later.

As shown in Figures 2 and 3, the rail 1 is a one-piece molded product made of synthetic resin with a specified width (for example, 765 mm in this embodiment). The rail 1 has an upright wall 11 that is fixed with its back surface pressed against the wall W, and a hook wall 12 that protrudes diagonally forward from the lower end of the upright wall 11 over the entire width, and the shelf column 2 can be hooked on the hook wall 12. In this embodiment, the thickness dimension of the upright wall 11 is set to 3 mm, and the thickness dimension of the hook wall 12 is set to 3 mm. Here, Figure 2 is an overall external view of the rail 1, Figure 3 (a) is a plan view of the rail 1, and Figures 3 (b) and (c) are views in the direction of the arrow A1 (front view) and the direction of the arrow A2 (rear view) of Figure 3 (a), respectively. Additionally, Figures 4(a), (b), and (c) are an enlarged view of the R1 region in Figure 3(a), an enlarged view of the R2 region in Figure 3(b), and a cross-sectional view taken along line d1-d1 in Figure 4(b), respectively.

In this embodiment, a groove 13 is provided at a predetermined location of the rail 1 as a boundary portion when the rail 1 is divided so that the length dimension of the rail 1 to be actually used can be selected and adjusted during construction according to the size of the room in which the base frame Y is set. The groove 13 is formed continuously over the back surface (rear surface) side of the standing wall 11 and the downward surface side of the hanging wall 12, as shown in Figures 3 and 4 (a). In the rail 1 of this embodiment, the groove 13 having a V-shaped cross section with a bottom thickness of 0.6 mm is formed at a position where the width of the rail 1 is 450 mm and 600 mm, respectively. Therefore, for example, when a rail 1 with a width dimension of 450 mm is applied, the rail 1 is divided at the groove 13 formed at the position of 450 mm. When divided at the groove 13, at least two divided rails are obtained, one of which is a rail to be actually used (rail 1 to be used) and the other is a rail that is not scheduled to be actually used (rail to be discarded). In this embodiment, at least in the vicinity of the groove 13 and in the portion (remaining portion) that will become the rail 1 in use after being divided at the groove 13, characters indicating the length (width dimension) of the rail 1 in use after being divided (in the illustrated example, W450, W600) are engraved. In this embodiment, the total length of the rail before being divided is set to 750 mm, and characters indicating the total length of the rail before being divided (in the illustrated example, W700) are engraved on one end of the rail. In the rail 1 of this embodiment, the characters indicating these width dimensions are engraved on the back surface of the standing wall 11 (see FIG. 3(c)). In particular, in the rail 1 according to this embodiment, the characters indicating the width dimension after being divided (in the illustrated example, W450, W600) among the engraved locations of the characters indicating the width dimensions (locations where the length engraved portion 14 is formed) are set in the vicinity of the groove 13 and in the portion that will become the rail 1 in use after being divided at the groove 13. This allows the length of the rail 1 in use to be intuitively grasped before and after being divided.

In addition, a recess 15 capable of accommodating the fixing bracket P according to this embodiment is formed on the forward-facing surface of the upright wall 11 of the rail 1 (see Figures 2 and 3(b)).

As shown in Fig. 5 and Fig. 6, the fixing bracket P according to this embodiment can be fixed to the wall W of the plaster board by pressing the fixing bracket P from the front in the thickness direction of the wall W of the plaster board. Fig. 5 is an overall external view of the fixing bracket P, Fig. 6(a) is a front view of the fixing bracket P, and Figs. 6(b) and (c) are views in the A1 direction and the A2 direction of Fig. 6(a). The fixing bracket P of this embodiment is an integrated metal product that includes a disk-shaped surface contact body P1 that is pressed directly or indirectly against the wall W of the plaster board, and three insertion claws P2 that protrude from the periphery of the surface contact body P1 in directions bent at approximately 90 degrees relative to the surface contact body P1, and can be fixed in a state of being pressed in a pressing direction that coincides with the thickness direction of the plaster board. The three insertion claws P2 are evenly arranged around the surface contact body P1, and each has a sharply pointed tip and a sawtooth multi-stage barb P3 (two stages in the illustrated example) from the tip to the base end, forming an arrowhead shape. In this embodiment, a fixing bracket P is applied that is formed by performing appropriate processing such as press processing on a steel plate with a plate thickness of 1 mm. In addition, a through hole P5 is formed in the center of the surface contact body P1 of the fixing bracket P, through which another fixing tool, such as a tapping screw N, can be inserted. The diameter of the outer periphery of the surface contact body P1 is 16 mm, and the diameter of the through hole P5 is 3.2 mm. In addition, the length from the base end to the tip of each insertion claw P2 is 16 mm, and the maximum width of the barb at the barb is 3 mm and the minimum width is 2 mm.

The rail 1 described above is provided with recesses 15 capable of accommodating such fixing brackets P. In this embodiment, the recesses 15 are provided on the forward-facing surface of the upright wall 11 of the rail 1 (see Figures 2, 3(b), 4(b) and 4(c)). Specifically, the rail 1 is provided with recesses 15 near both ends, and three recesses 15 are provided between the recesses 15 at both ends at intervals of 150 mm or 217.5 mm, for a total of five recesses 15 lined up in a row along the longitudinal direction of the rail 1. The height position of the recesses 15 is set at a position where they do not overlap the hanging wall 12 when the rail 1 is viewed from directly in front.

The recess 15 has a main recess 151 capable of accommodating the surface contact main body P1 of the fixing bracket P, and an insertion claw guide recess 152 that guides the insertion position of the insertion claw P2 of the fixing bracket P, and the recess dimension of the main recess 151 is set to be shallower than the recess dimension of the insertion claw guide recess 152. The insertion claw guide recess 152 is arranged at equal pitches (120 degrees) in the circumferential direction on the periphery of the surface contact main body P1. The thickness dimension (dimension in the front-rear direction D1) of the standing wall 11 of the rail 1 is 3 mm, and the bottom of the main recess 151 of the recess 15 is set to a position 1.1 mm from the front surface of the standing wall 11, and the bottom of the insertion claw guide recess 152 is set to a position 2.7 mm from the front surface of the standing wall 11. In other words, the bottom of the insertion claw guide recess 152 is set to a thickness (thickness 0.3 mm) that can be broken through by the insertion claw P2. In addition, a screw guide recess 153 is formed in the center of the main recess 151 to guide the position for inserting a tapping screw N, which is a fixing device separate from the fixing bracket P. The screw guide recess 153 has a bottom that is set to a thickness similar to that of the insertion claw guide recess 152, and a seat that accommodates the head of the tapping screw N.

Before fixing such a rail 1 to the wall W, the width dimension of the rail 1 is selected in advance, and the rail 1 is divided at the groove 13 provided at the location corresponding to the selected length. Of course, the entire length of the rail 1 can be used as is without dividing it. The process of fixing the rail 1 to the wall W is performed by pressing the back surface (rear surface) of the standing wall 11 against the wall W with the rail 1 in a horizontal position, and using the fixing bracket P or the tapping screw N. In other words, if the wall W does not have a base, the fixing bracket P is used for fixing, and if the wall W has a base, the tapping screw N is used for fixing. The process of fixing the rail 1 using the fixing bracket P is completed by inserting the fixing bracket P into each recess 15. When the fixing bracket P is inserted into the recess 15, the tip of the insertion claw P2 breaks through the insertion claw guide recess 152 and penetrates the gypsum board wall W as it is. When the fixing bracket P is pressed to a position where the surface contact body part P1 of the fixing bracket P is completely housed in the main recess 151, the three insertion claws P2 penetrate a predetermined distance into the inside of the plasterboard wall W, maintaining a good fixed state and allowing the rail 1 to be fixed in a sandwiched state between the plasterboard wall W and the fixing bracket P. On the other hand, when fixing the rail 1 to the wall W with a base using a tapping screw N without using the fixing bracket P, the tapping screw N is inserted into the screw guide recess 153 of the recess 15 and screwed directly into the wall W.

By following the above steps, the shelf post 2 can be positioned while being hooked onto the rail 1 fixed to the wall W.

As shown in Fig. 7 and Fig. 8, the shelf column 2 in this embodiment can be used as one shelf column 2 by connecting two types of resin shelf column elements, an upper shelf column element 3A and a lower shelf column element 3B, in the height direction. As shown in Fig. 8(a) and Fig. 9, the upper shelf column element 3A has a front wall 31, a pair of left and right side walls 32 protruding rearward from both side edges of the front wall 31, and a central rib wall 33 protruding rearward from the center of the width direction D2 of the front wall 31 on the back surface (rear surface) of the front wall 31 over almost the entire length. Fig. 9(a) is a front view of the upper shelf column element 3A, and Figs. 9(b) and 9(c) are a view in the direction of the arrow A1 (plan view) and a view in the direction of the arrow A2 (bottom view) of Fig. 9(a). The thickness dimension of the front wall 31 (dimension in the front-rear direction D1) is 2.3 mm, the thickness dimension of the side wall 32 (dimension in the width direction D2) is 5 mm, and the thickness dimension of the central rib wall 33 (dimension in the width direction D2) is 8 mm. The rearward protrusion amount (protrusion dimension) of the side wall 32 and the central rib wall 33 relative to the front wall 31 is the same or the central rib wall 33 is set slightly shorter, and the protruding tip surfaces of the side wall 32 and the central rib wall 33 are each set to a vertically flat surface.

In the front wall 31, a number of slits 34 for mounting brackets are opened at a predetermined pitch in the height direction. In this embodiment, a support in which a pair of vertically long slits 34 are formed on the left and right (two vertical rows) at the same height position is shown, but a support in which one or more vertical rows of slits 34 are formed may be used. In addition, in the center part of the width direction D2 of the front wall 31, a number of screw insertion holes 35 are provided in the height direction at positions that do not overlap with the slits 34. The screw insertion holes 35 are holes that penetrate from the forward surface of the front wall 31 to the protruding tip surface of the central rib wall 33. The screw insertion holes 35 also include a seat exposed on the forward surface of the front wall 31. In this embodiment, the screw insertion holes 35 are provided near the upper end, the center in the height direction, and near the lower end of the upper shelf column element 3A.

Furthermore, as shown in FIG. 10(a), the upper shelf column element 3A of this embodiment has a plurality of receiving portions 36 in the height direction on the protruding tip surface of the central rib wall 33, which can accommodate the fixing bracket P in a hooked state. FIG. 10(a) is a cross-sectional view taken along d1-d1 in FIG. 9(a). In this embodiment, the receiving portions 36 are formed at positions communicating with the screw insertion holes 35. The receiving portions 36 are recessed grooves that can cover and accommodate the fixing bracket P fixed to the plasterboard wall W from the front side of the plasterboard wall W prior to the process of attaching the shelf column 2 to the rail 1.

The upper shelf column element 3 has an elastic claw 37 that protrudes downward at its lower end, and an engagement hole 38 with which the elastic claw 37 engages at its upper end. As shown in Fig. 9 (a) and Fig. 11 (a), the elastic claw 37 protrudes further downward from the flat lower end surfaces of both side walls 32, and the engagement protrusion 371 (returned portion) at the tip portion faces outward. The shelf column element 3 has a rib reinforcement portion 39 between the pair of left and right elastic claws 37 that protrudes further downward from the lower end surface of the central rib wall 33 and contacts the rearward surface of the front wall 31 of the lower shelf column element 3B when the upper shelf column element 3A and the lower shelf column element 3B are connected in the height direction (see Fig. 10 (a)). The tip surfaces (lower end surfaces) of the elastic claw 37 and the rib reinforcement portion 39 are set to a horizontally flat surface.

The engagement holes 38 are holes that penetrate the side walls 32 in the thickness direction (width direction D2) at positions spaced a predetermined distance downward from the upper end faces of the side walls 32. The upper end face of the central rib wall 33 is set at a position lower than the engagement holes 38 (see FIG. 10(a)).

On the other hand, as shown in Figures 8(b), 10(b) and 11(b), the lower shelf column element 3B differs from the upper shelf column element 3A only in that it does not have the above-mentioned elastic claws 37 and rib reinforcement portion 39, but the rest of the structure and shape are the same as those of the upper shelf column element 3A.

When two such upper shelf column elements 3A and lower shelf column elements 3B are arranged in the height direction and brought close to each other as shown in Figure 12, the engaging projection 371 at the tip of the elastic claw 37 provided at the lower end of the upper shelf column element 3A hits the upper end surface 3T of the lower shelf column element 3B, and when the shelf column elements 3A and 3B are brought closer to each other, the elastic claw 37 elastically deforms while contacting the side wall 32 of the lower shelf column element 3B. When the shelf column elements 3A and 3B are brought closer to each other, the engaging projection 371 of the upper shelf column element 3A reaches the engaging hole 38 of the lower shelf column element 3B, elastically returns, and fits into and engages with the engaging hole 38. In this way, the elastic claw 37 engages with the engaging hole 38, connecting the upper shelf column element 3A and the lower shelf column element 3B, and a single shelf column 2 can be formed. In this connected state, the lower end surface 3D of the upper shelf column element 3A and the upper end surface 3T of the lower shelf column element 3B are in contact with each other (see FIG. 7(b)). In addition, in this connected state, the forward surface of the rib reinforcement portion 39 provided between the elastic claws 37 of the upper shelf column element 3A is in surface contact with the rearward surface of the front wall 31 of the lower shelf column element 3B (see FIG. 7(b)). In addition, in the shelf column 2 of this embodiment, when the upper shelf column element 3A and the lower shelf column element 3B are connected, if a force acts in a direction to separate the shelf column elements 3A and 3B from each other, the engagement protrusion 371 (return portion) at the tip portion of the elastic claw 37 is caught in the engagement hole 38, thereby exerting a slip-out prevention function that prevents the elastic claw 37 from slipping out of the engagement hole 38. FIG. 7(b) is a front view of the shelf column 2, showing an enlarged view of the connection portion between the upper shelf column element 3A and the lower shelf column element 3B. Furthermore, when an operator applies an operating force to press the elastic claws 37 inward using an appropriate tool, the elastic claws 37 come out of the engagement holes 38, and in this state, the shelf column elements 3A, 3B can be pulled in a direction separating them from each other to release the connection between them.

In addition, the upper shelf column element 3A of this embodiment has a hook portion 3H at its upper end that can be hooked from above onto the hook wall 12 of the rail 1. The hook portion 3H has a shape (the shape of the hook groove 13) that opens in a direction that gradually inclines toward the center in the height direction from the front wall 31 side toward the rear, at a position in the side wall 32 that is a predetermined distance away in the height direction from the engagement hole 38 (in a direction closer to the center in the height direction than the engagement hole 38). The inclination angle of the hook portion 3H corresponds to the protruding inclination angle of the hook wall 12.

Therefore, among the shelf columns 2 in which the shelf column elements 3A and 3B having such hook portions 3H are connected to each other, the hook portion 3H of the upper shelf column element 3A can be hooked from above to the hook wall 12 of the rail 1. In this embodiment, the dimension (depth dimension) in the front-rear direction D1 of the part of the side wall 32 of the upper shelf column element 3A above the hook portion 3H (the part on the side farther from the center of the extension direction (height direction) of the side wall 32 than the hook portion 3H with the hook portion 3H as the boundary) is set smaller than the other part by the dimension (thickness dimension) in the front-rear direction D1 of the standing wall 11 of the rail 1. Therefore, when the hook portion 3H is hooked to the hook wall 12 of the rail 1, the entire rearward surface of the part of the side wall 32 below the hook portion 3H (most of the side wall 32) can be brought into contact with the wall W to be fixed together with the standing wall 11 of the rail 1. At the upper end of the upper shelf column element 3A where the hook portion 3H is provided, the central rib wall 33 is cut to the same shape as the opening edge of the hook portion 3H (see FIG. 10). In other words, the central rib wall 33 extending along the height direction of the upper shelf column element 3A does not extend beyond the hook portion 3H. Note that FIG. 8(b), FIG. 10(b), and FIG. 11(b) are views of the lower shelf column element 3B corresponding to FIG. 8(a), FIG. 10(a), and FIG. 11(a). FIG. 11(a) shows the state in which the upper shelf column element 3A is hooked onto the rail 1, but FIG. 11(b) does not show the rail 1 because the lower shelf column element 3B is not expected to be hooked onto the rail 1.

The steps for setting the base frame Y of the wall-mounted shelf X on the wall W using the above parts (rail 1, shelf post 2, and fixing bracket P) are as follows.

First, when adjusting the rail 1 to a predetermined length, the rail 1 is divided at the groove 13 provided near the length marking portion 14, using the letters (length marking portion 14) indicating the length stamped on the back of the standing wall 11 of the rail 1 as a clue. This division work can be done by hand. The divided rail 1 to be used or the standing wall 11 of the rail 1 to be used in its entirety without being divided is pressed against the wall W, and the rail 1 is fixed to the wall W by the above-mentioned fixing process using the fixing bracket P or the tapping screw N. In particular, when the rail 1 is fixed to a wall W without a base such as a plasterboard with the fixing bracket P, the three insertion claws P2 provided at 120 degree intervals on each fixing bracket P can be inserted into the inside of the plasterboard wall W at different angles to maintain a good fixed state. Note that, if the fixing points of one rail 1 to the wall W can be distinguished between places with and without a base, tapping screws N can be used for places with a base and fixing brackets P can be used for places without a base. That is, when fixing one rail 1 to a wall W at multiple locations (up to five locations in the illustrated example), it is possible to fix three locations with tapping screws N and the remaining two locations with fixing brackets P.

Next, prepare the required number of shelf columns 2 in which the upper shelf column element 3A and the lower shelf column element 3B are connected in the above-mentioned procedure, and hook the hook portion 3H provided on the upper end of each shelf column 2 (the upper end of the upper shelf column element 3A) from above onto the hook wall 12 of the rail 1. If the location where the shelf column 2 is fixed to the wall W is a location without a base such as plasterboard, before the shelf column 2 is hooked onto the rail 1, the fixing bracket P is inserted into the location where the receiving portion 36 of the shelf column 2 (the receiving portion 36 provided on the protruding tip surface of the central rib wall 33 protruding rearward from the center of the width direction D2) is to be located, and the surface contact main body portion P1 of the fixing bracket P is pushed in and fixed to a position where it contacts the wall W. As a result, the fixing bracket P is accommodated in the receiving portion 36 with the shelf column 2 hooked onto the rail 1 and supported. Next, when a tapping screw N is inserted from the front side into each of the screw insertion holes 35 provided in the front wall 31 of each shelf column element 3A, 3B that constitutes the shelf column 2, the tapping screw N enters the wall W while being screwed into the through hole P5 formed in the center part of the surface contact main body part P1 of the fixing bracket P housed in the receiving part 36 (see FIG. 10). Through the above process, the shelf column 2 can be fixed to the wall W at the fixing point.

On the other hand, if the fixing point of the shelf column 2 to the wall W is a place where there is a base (a place where a screw can be used), the shelf column 2 can be fixed to the wall W using only the tapping screw N without using the fixing bracket P. In this case, there is no need to push the fixing bracket P into the wall W and fix it at a stage before the shelf column 2 is hooked to the rail 1. After the shelf column 2 is hooked to the rail 1, the shelf column 2 can be screwed to the wall W by inserting the tapping screw N from the front side into each of the screw insertion holes 35 provided in the front wall 31 of each shelf column element 3A, 3B that constitutes the shelf column 2 and screwing it into the wall W. Note that, if the fixing points of one shelf column 2 to the wall W can be distinguished between places with and without a base, only the tapping screw N can be used in places with a base, and the fixing bracket P and the tapping screw N can be used in places without a base. That is, when fixing one shelf column 2 to a wall W at multiple locations (up to six locations in the illustrated example), it is possible to fix, for example, three locations with tapping screws N only, and the remaining three locations with fixing brackets P and tapping screws N.

By following the above procedure, the base frame Y of the wall-mounted shelf X can be set in a fixed state to the wall W. Then, a bracket B is attached to any bracket mounting slit 34 selected from the multiple bracket mounting slits 34 formed in the front wall 31 of each shelf column element 3, and a shelf board T is attached to this bracket B via an attachment, resulting in a wall-mounted shelf X on which appropriate items can be placed on the shelf board T.

The bracket B used in this embodiment is a one-piece molded product made of synthetic resin, and as shown in FIG. 13, a plurality of hook claws B1 (three hook claws B1 arranged in the height direction in the illustrated example) are formed on the base end side for inserting and hooking into the bracket mounting slits 34 of the shelf column elements 3A and 3B, and a long arm portion B2 extends from the base end side to the tip side. FIGS. 13(a) and 13(b) are overall external views of the bracket B seen from different directions. The hook claws B1 are downward L-shaped like a general-purpose steel plate bracket. The arm portion B2 exposed to the outside when the hook claws B1 are hooked into the bracket mounting slits 34 of the shelf column element 3, the portion that is in contact with or close to the shelf column elements 3A and 3B and is below the hook claw B1 in the first row from the top, and the portion of the lower edge of the arm portion B2 that extends from the base end of the arm portion B2 to a predetermined position along the extension direction are set to be thicker than other regions. Additionally, the arm portion B2 has a number of holes B3 (six holes B3 in the illustrated example) formed in a row along its longitudinal direction. Each hole B3 is formed in a square shape. The spacing between the holes B3 in the arm portion B2 is all equal, except for the first and second holes from the base end, which are slightly narrower. The number and positions of the holes B3 in the arm portion B2 can be set as desired.

As described above, the fixing bracket P in this embodiment is a metal fixing bracket that can be fixed in a state where it is pressed against the plasterboard wall W in a predetermined pressing direction, and is integrally provided with a surface contact main body portion P1 that is pressed directly or indirectly against the plasterboard wall W, and three insertion claws P2 that each protrude from the periphery of the surface contact main body portion P1 in a pressing direction bent at approximately 90 degrees relative to the surface contact main body portion P1, and each insertion claw P2 has one or more sawtooth-shaped barbs P3, so that at least one of the three insertion claws P2 enters the plasterboard wall W in an oblique position that is neither vertical nor horizontal, resulting in an excellent insertion state that is difficult to remove from the plasterboard wall W. In particular, since each insertion claw P2 has one or more sawtooth-shaped barbs P3, once inserted and fixed into the plasterboard wall W, when a force is applied to the fixing bracket P to remove it from the plasterboard wall W, the barbs P3 of each insertion claw P2 bite into the plasterboard wall W and the fixing bracket P does not easily come out, so that the fixing bracket P can maintain a good fixed state. In the above embodiment, the use of the fixing bracket P hooked onto the receiving portion 36 of the shelf column 2 corresponds to a use in which the surface contact main body portion P1 is directly pressed against the plasterboard wall W, and the use of the fixing bracket P accommodated in the recess 15 formed in the upright wall 11 of the rail 1 corresponds to a use in which the surface contact main body portion P1 is indirectly pressed against the plasterboard wall W.

In particular, the fixing bracket P according to this embodiment has three insertion claws P2 evenly spaced around the surface contact body P1, so that at least two or more insertion claws P2 enter the plasterboard wall W at an angle that is neither vertical nor horizontal when viewed from the front, resulting in a favorable insertion state that makes it difficult to pull out of the plasterboard wall W.

In addition, the fixing bracket P according to this embodiment has a through hole P5 in the center of the surface contact main body P1 through which a fixing tool different from the fixing bracket P can be inserted. Therefore, by inserting another fixing tool (tapping screw N) into the through hole P5 and fixing it to the plasterboard wall W, a stronger fixing state can be achieved than in the case where the fixing bracket P is fixed to the plasterboard wall W by itself. In addition, by setting the diameter of the through hole P5 to an appropriate value (set to a value smaller than the diameter of the tapping screw) so that the tapping screw N inserted into the through hole P5 can be screwed into the through hole P5 while tapping, the fixing bracket P inserted and fixed into the wall W effectively functions as a scaffold that directly supports the tapping screw N, as in the case of fixing the shelf column 2 described above to the plasterboard wall W.

The present invention is not limited to the above-described embodiment. For example, the fixing bracket may have three insertion claws arranged unevenly around the periphery of the surface contact body.

The number and shape of the barbs on each insertion claw, or the position of the barbs on each insertion claw, can be changed as appropriate.

The fixing bracket may also be one that does not have a through hole formed in the center of the surface contact main body for inserting a fixing device other than the fixing bracket.

The fastening hardware of this invention can also be used to fasten items other than the wall-mounted shelves described in the above embodiments to plasterboard.

The specific configuration and processing contents of each part are not limited to the above embodiment, and various modifications are possible without departing from the spirit of the present invention.

P...Fixing bracket P1...Face-contact body P2...Insertion claw P5...Through hole

Claims (3)

This is a metal fixing bracket that can be fixed in a state where it is pressed against the gypsum board in a specified pressing direction.
A surface contact main body portion that is pressed directly or indirectly against a plaster board;
three insertion claws integrally formed with the surface contact body and protruding from a periphery of the surface contact body in the pressing direction and bent at approximately 90 degrees with respect to the surface contact body;
A fastening fitting for gypsum board, characterized in that each of the insertion claws has one or more sawtooth barbs. The gypsum board fixing bracket according to claim 1, in which the insertion claws are evenly spaced around the surface contact body. A fastener for gypsum board according to claim 1 or 2, in which a through hole is formed in the center of the surface contact main body, through which a fastener different from the fastener can be inserted.

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