JPH0738340U - Locking structure for locking tool - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To provide a screw-fastening structure for a fastener with good fastening properties. [Structure] When a metal thin plate is fastened to one member by passing a screw through a screw mounting hole 67 provided on a flat surface of a metal thin plate 61 of a locking tool 60, a plurality of radially extending parts are formed from the center of the mounting hole. Of the elongated cut holes 68, the pointed metal thin pieces formed by the adjacent cut holes bite into one member, respectively, to securely fasten the locking member to the member.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a screwing structure for a locking tool for locking two members.

[0002]

[Prior art]

 As a locking tool for locking a member such as a building board to another member, for example, a steel holding metal fitting disclosed in Japanese Utility Model Publication No. 4-53383 is known. This steel holding bracket has an upper mounting arm for mounting a building board to a fixed object such as a field edge or stud, and the upper mounting arm has a mounting hole for receiving a screw or a nail. . This type of building board, such as a ceiling board, has a back rail fixed to the back surface with an adhesive or the like in order to increase its strength and to easily attach it to a field edge connected to a hanging tree. The back rail located on one lengthwise edge of the ceiling plate projects beyond this edge, and the back rail located on the other lengthwise edge of the ceiling plate is recessed from the edge of the building board. In addition, a cutout recess is provided adjacent to the back surface of the building board. To attach the ceiling plate to the field edge using the retaining bracket, attach the retaining bracket to the back rail with its lower support arm and the holding plate, and while supporting one ceiling plate, screw the retaining bracket to the edge. Stop or nail. Next, the protruding portion of the back rail of the other ceiling plate is positioned on the rear surface portion of the one ceiling plate and received by this. Now, in such a holding metal fitting, that is, the locking tool, since the locking tool suspends and supports the ceiling board through the back rail, the screw or nail of the upper mounting arm bears the weight of the ceiling board, Force is always applied in the direction to pull out the screw. In addition, gypsum board, which is classified as a fragile material, is laid on the field edge for the purpose of improving fireproofness and sound insulation, and screwing or nailing is performed on it. Therefore, the screws or nails are not firmly fixed in the gypsum board, the ratchet is apt to rattle, and the fastening of the fastener to the field edge by the screw or the like is deteriorated.

Further, so-called trumpet screws or countersunk screws are generally used for fastening the fragile gypsum board to the field edge from the viewpoint of fixability and the like. However, the trumpet screws and flat head screws are not fast enough to fasten the fasteners or other rigid members to the edge of the field because the tightness between the necks of the screws and the fasteners is insufficient and the fastening performance is poor. Is a pan screw with which the neck of the screw is in close contact. Therefore, it is necessary to use different fastening screws for fastening the gypsum board to the field edge and for fastening the locking tool to the field edge via the gypsum board, which reduces the construction efficiency. Further, when the protruding portion of the back rail of one ceiling plate is positioned on the back portion of the other ceiling plate, the other ceiling plate is held by the holding metal fittings whose upper mounting arm is screwed to the field edge. There is a need. Therefore, when inserting the protruding part of the back rail of one ceiling plate between the upper mounting arm and the rear part of the other ceiling plate, the head of the screw protruding from the upper mounting arm becomes an obstacle, and thus it protrudes. It is necessary to dent the head of the screw with a punch, etc., which reduces the construction efficiency.

[0004]

[Problems to be solved by the device]

 Therefore, a first object of the present invention is to provide a screw-fastening structure for a fastener having good fastening properties. A second object of the present invention is to provide a screwing structure for a locking tool that can lock two members efficiently and reliably.

[0005]

[Means for Solving the Problems]

 In order to achieve the first object, in the first aspect of the screw fastening structure of the locking tool of the present invention, there is provided a locking tool for locking two members, wherein A metal thin plate having a flat portion for abutting against one member, and a screw having a shaft and a head for fastening the metal thin plate to the one member. In the screw fastening structure of the locking tool, which has a mounting hole for receiving the screw on the flat surface portion, the mounting hole has a plurality of elongated cut holes, and the plurality of elongated cut holes are the mounting holes. It is configured to extend radially from the center of the. In order to achieve the first and second objects, in the second invention, there is provided a locking tool for locking two members, which is for contacting one of the two members. A metal thin plate having a flat surface portion and a screw having a shaft and a head for fastening the metal thin plate to the one member are provided, and the metal thin plate receives the screw in the flat surface portion. And a plurality of elongated cutouts, wherein the plurality of elongated cutouts extend radially from a center of the mounting hole. The other member of the members is a building board in which a back rail is adhered to the back surface for reinforcement, and the back rail located at one lengthwise edge of the building board projects beyond this edge, The back rail on the other longitudinal edge of the building board is the edge of the building board. It has a notched concave portion that is located in a retracted position and is adjacent to the back surface of the building board, and one of the two members is a rim or a stud, and the locking tool is the thin metal plate. It further has a lower thin plate extending parallel to the opposite direction, inserts the lower thin plate into the cutout recess of the back rung of one building board, and fastens it to the recessed part of the back rung of one building board and the field edge or stud. The protruding portion of the back rail of the other building board is inserted between the thin metal plate and the metal thin plate.

[0006]

[Action]

 According to the first aspect of the present invention, the flat portion of the metal thin plate of the engaging member is brought into contact with one member, the screw is passed through the mounting hole provided in the flat portion, and the screw is screwed into the one member. Mu. At this time, the same number of pointed metal thin pieces as the number of cuts are formed on the substantially same plane as the plane portion by the adjacent cut holes radially extending. After the screw head comes into contact with the flat surface, it is screwed in further and the thin metal plate is fastened to one member, and each sharpened thin metal piece is fastened by the screw head in the fastening direction, that is, one member. Pressed in the direction. As a result, in each of the metallic thin pieces, a portion ahead of the line connecting the radially extending end portions of the adjacent cut holes is bent in the fastening direction, and the sharpened portion bites into one member. Since each of the metal flakes bites into one member, the biting is performed over the entire circumferential direction. Thereby, it becomes possible to securely fasten the metal thin plate, and thus the locking tool, to one member. According to the second aspect of the invention, as in the first aspect of the invention, the engaging piece is surely the one member by the biting action caused by the fastening of the screws of the metal thin pieces formed by the adjacent cut holes. It becomes possible to conclude in the field. In addition, the head of the screw protruding from the locking tool can move in the fastening direction as the screw is fastened by the biting action of the metal thin piece, and can be made substantially flush with the flat portion of the locking tool. Thereby, the protrusion of the back rail of one ceiling plate can be inserted between the thin metal plate and the rear part of the other ceiling plate without denting the screw head, and the two members are locked. Can be performed efficiently and reliably.

Further, according to the second aspect of the invention, since the sharp metal flakes cut into one member, even if the gypsum board of the fragile material is interposed between the locking member and the one member, the pan screw Since it is possible to secure the fastening of the gypsum board with the trumpet screw or the countersunk screw, it is possible to share the screw with the trapper screw or the countersunk screw, and to perform the locking of the two members even more efficiently and securely. Will be possible.

[0008]

【Example】

With reference to the attached drawings, the ceiling board corresponding to one member is attached to the ceiling board corresponding to one member by taking the ceiling board as an example of the building board of the present invention (stop The screwing structure of the locking tool for the purpose will be described. First Embodiment (FIGS. 1 to 4) In FIG. 1, reference numeral 10 denotes a ceiling board such as a gypsum board or plywood, and the ceiling board 10 has back rails 20 and 30 adhered and fixed to the back surface thereof with an adhesive or the like. The back rail 20 is installed on one edge of the ceiling board 10 in the longitudinal direction and projects beyond this edge, and the back rail 30 is mounted on the other edge of the ceiling board 10 in the longitudinal direction of the ceiling board 10. It is installed so as to be recessed from the edge surface and has a cutout recess 30a adjacent to the back surface of the ceiling plate 3. As shown in FIG. 2, this ceiling board 10 is adapted to be attached to a horizontal horizontal field edge 40, and the vertical and horizontal horizontal field edge 40 is generally of a hanging tree 50. It is connected to the lower end. The field edge 40 is subbed by a gypsum board 70.

The fastener for attaching the ceiling plate 10 to the rim 40 will be described. As shown in FIG. 3, the holding metal fitting 60 includes an upper attachment arm 61 and one end of the upper attachment arm 61. From the lower end of the vertical web 63, the lower support arm 64 extending parallel to the upper mounting arm 61 in the opposite direction, and the other of the upper mounting arm 61. It has a bent portion 65 formed at an end and extending obliquely downward. The upper mounting arm 61 of the holding metal fitting 60 is formed with a mounting hole 67 for receiving a trumpet screw 66 for fixing the arm 61 to the field edge 40. The mounting hole 67 has four elongated cutouts 68, and the cutouts 68 extend radially from the center of the mounting hole 67 in four directions. The angle formed by the adjacent cut holes 68 is 90 °. Four metal flakes 69 are formed on the same plane as the upper mounting arm 61 by the adjacent cut holes 68 extending radially. The metal thin pieces 69 are sharpened at the points where the adjacent cut holes 68 intersect, that is, at the center of the mounting holes 67. Prior to screwing the holding metal fitting 60 to the field edge 40, this is temporarily fixed to the back rail 30 of one ceiling plate 10. That is, in the construction, first, as shown in FIG. 2, the lower support arm 64 of the holding metal fitting 60 is inserted into the notch recess 30a of the back rail 30 so that the back rail 30 is inserted between the holding plate 62 and the lower support arm 64. Accept the department. Thus, the holding metal fitting 60 is held by the back rail 30. Thereafter, the upper mounting arm 61 of the holding metal fitting 60 is screwed with the trumpet screw 66 while supporting the ceiling plate 10. As the trumpet screw 66 is screwed into the subbed gypsum board, the screw head 66a comes into contact with the upper mounting arm 61. When the screw is further screwed in, the fastening of the field edge 40 of the upper attachment arm 61 by the trumpet 66 is started. As shown in FIG. 4, at the same time, the screw head 66a presses each of the metal thin pieces 69 in the fastening direction, so that each metal thin piece 69 which is on the same plane as the upper mounting arm 61 has a mounting hole 67a. The gypsum board 70 begins to bite from the central part of the, that is, the pointed part. The bite is almost uniform between the metal flakes. The screw is fastened until the screw head 66a protruding from the upper mounting arm 61 becomes substantially flush with the flat surface portion of the upper mounting arm 61. At this time, each metal thin piece 69 is bent in the fastening direction at a portion preceding the line connecting the radially extending end portions of the adjacent cut holes 68. Therefore, from the viewpoint of preventing the trumpet screw 66 from coming off in the fastening direction due to the provision of the notch hole 68, the notch length R (mm) of the notch hole 68 is the radius of the head 66 a of the trumpet screw 66 r (mm). ), It is preferable to be in the range of r-1 (mm) to r + 3 (mm).

Next, as shown in FIG. 2, the protruding portion 20a of the back rail 20 of the other ceiling board 10 is positioned on the back surface of one ceiling board 10, whereby the other ceiling board 10 is placed on one ceiling. It is received from below by Iita 10. At this time, since the screw head 66a is substantially flush with the flat surface of the upper mounting arm 61, the protrusion 20a can be easily inserted between the upper mounting arm 61 and the rear surface of the ceiling plate 10. . Thus, one of the adjacent ceiling boards 10 is suspended from the lower support arm 64 of the holding metal fitting 60 via the back rail 30 engaged with the lower support arm 64, and the other ceiling board 10 is passed through the back rail 20 to one ceiling board. It will be supported by the plate 10. When the back rail 20 of the other ceiling board 10 is positioned on the one ceiling board 10, the edge of the back rail 20 contacts the bent portion 65, and the floating of the ceiling board 10 causes the bent portion 65 and the back rail 20 to rise. Is prevented by the engagement of. At the mounting position of the ceiling plate 10, both end faces of the back rails 20 and 30 engage with the vertical web 63 of the holding metal fitting 60. Similar results were obtained by using flat head screws instead of the trumpet screws in this example. Second Embodiment (FIG. 5) This embodiment is characterized by the number of cut holes radially extending from the center of the mounting hole. In the description of this embodiment, the same elements as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted. The characteristic parts of this embodiment will be described below.

The mounting hole 67 has six elongated slit holes 68, and the slit holes 68 extend radially from the center of the mounting hole 67 in six directions. The angle formed by the adjacent cut holes 68 is 60 °. By these cut holes 68, six thin metal pieces 69 are formed on the same plane as the upper mounting arm 61. The metal flakes 69 are sharpened at the points where the adjacent cut holes 68 intersect, that is, at the center of the mounting holes. When the holding metal fitting 60 is screwed to the field edge 40, each thin metal piece 69 is cut into the gypsum board as in the first embodiment. At this time, the angle formed by the pointed portion of each metal thin piece 69 is 60 °, which is more acute than in the first embodiment. Therefore, since the size of each metal thin piece 69 is smaller than that in the first embodiment, the bending rigidity in the fastening direction is smaller, and the metal thin pieces 69 tend to bend in the fastening direction. Moreover, since the tip of each metal thin piece 69 is sharper, the effect of biting into the gypsum board is greater. Therefore, by adjusting the number of the cut holes 68 according to the hardness of the field edge 40, it is possible to secure the fastening property of the holding metal fitting 60 to the field edge 40. In the above, the screwing structure of the locking tool for locking the ceiling plate to the field edge has been described by taking the ceiling plate as an example, but the present invention is applicable to the case where a building plate such as a wall material is locked to a stud or the like. Clearly, apply equally. Moreover, it is not limited to the case where the gypsum board is used to lock the undergarment, but also the case where it is locked to any member that is softer than the upper mounting arm. Furthermore, the invention is not limited to the case of locking a building board, and is also applicable to the case of locking a general structure to another general structure by screwing through a fastener.

[0012]

[Effect of device]

 The present invention uses the screwing structure of the fastener constructed as described above, and securely engages the fastener with the member by the biting action of the pointed metal thin piece formed by the adjacent cut holes. can do. In addition, by the biting action of the pointed metal thin piece, the head of the screw protruding from the locking tool can be made substantially flush with the flat surface of the locking tool, thereby efficiently locking the two members. Moreover, it can be surely performed. In addition, the trumpet-shaped or dish-shaped screw for fastening the thin metal plate of the fastener to the member can securely fasten the fastener to the member regardless of the type of the member. Even if they are different, it is not necessary to use them separately from the pan screws, and by sharing the screws with a trumpet-shaped or dish-shaped screw, the two members can be locked even more efficiently and reliably.

[Brief description of drawings]

FIG. 1 is a perspective view of a ceiling plate as viewed from the back side thereof.

FIG. 2 is a perspective view showing a screw fastening structure of a locking tool according to the first embodiment.
It is sectional drawing which shows the state which attached the ceiling board to the field edge.

FIG. 3 is a perspective view of a first embodiment of a screw fastening structure for a locking device according to the present invention.

FIG. 4 is a schematic view of the locking device of the first embodiment in a screwed structure in use.

FIG. 5 is a perspective view of a second embodiment of a screw fastening structure for a locking tool according to the present invention.

[Explanation of symbols]

 10 Other member 20 Back beam 30 Back beam 30a Cutout recess 40 One member 60 Locking tool 61 Metal thin plate 66 Screw 66a Head 67 Mounting hole 68 Elongated cut hole

Claims (6)

[Scope of utility model registration request] 1. A locking tool for locking two members, comprising: a thin metal plate having a flat portion for abutting one of the two members; a shaft and a head.
A screw for fastening the metal thin plate to the one member, wherein the metal thin plate has a mounting hole for receiving the screw in the flat surface portion, in a screw fastening structure of a locking tool, The hole has a plurality of elongated cutout holes, and the plurality of elongated cutout holes extend radially from a center of the attachment hole. 2. The other member of the two members is a building board in which a back rail is bonded and reinforced on the back surface, and the back rail located at one longitudinal edge of the building board has this edge. And a notch recessed portion adjacent to the back surface of the building board, the back rail of the other lengthwise edge of the building board being recessed from the edge surface of the building board. One of the members is a field edge or a stud, and the locking tool further has a lower thin plate extending in parallel to the metal thin plate in the opposite direction, and the notch of the back rail of the one building plate. The lower thin plate is inserted into the recess, and the protruding portion of the back rung of the other building plate is inserted between the recessed part of the back rung of one building plate and the metal thin plate fastened to the field edge or stud. The screw-fastening structure for the fastener according to claim 1. 3. The plurality of cut holes are provided in three directions to six directions.
The screw-fastening structure for the fastener according to any one of claims 1 and 2, wherein the screw-fastening structure extends radially in any direction. 4. The screw fastening structure for a locking tool according to claim 1, wherein the one member is made of a material softer than the metal thin plate. 5. The cut length of each of the plurality of elongated cut holes is within a range of 1 mm smaller than the radius of the head of the screw and 3 mm larger than the radius. The screw-fastening structure of the locking tool according to claim 4. 6. The screw fixing structure for a locking tool according to claim 1, wherein the screw is a trumpet screw or a countersunk screw.