JPH0535922U - Lattice ceiling frame connection structure - Google Patents

Abstract

(57) [Abstract] [Purpose] In the system ceiling method, the structure is such that the main bar and the cross bar forming the lattice ceiling frame can be easily and firmly connected at right angles. [Structure] Standing claws (6) and (7) facing up and down of a standing wall (3) of a main bar (1) are provided in a protruding manner, and a crossbar (20) is provided.
A pair of projecting tongues (24, 25) (26, 27) are formed on a fitting piece (23) bent at a right angle from the standing wall (21) and the projecting tongues (24) are formed on the standing claws (6) (7). , 25) (26,
27) is configured to be elastically engageable, and the width (b) of the neck portion (22) of the fitting piece (23) is larger than the distance (a) between the facing claws.
Is narrowed so that the main bar (1) can be fitted from any direction in the longitudinal direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lattice-shaped ceiling frame for supporting a ceiling plate or the like suspended from a ceiling material in the system ceiling method, and more particularly, to an improvement in a right-angled joint structure of a main bar and a crossbar which constitutes the ceiling frame. It is a thing.

[0002]

[Prior Art]

 In the system ceiling method, a grid-shaped ceiling frame is usually hung along the ceiling surface, and equipment such as lighting, air conditioning, and disaster prevention is placed at the required locations, and ceiling panels are attached to the finished ceiling. Forming a surface. The grid-like ceiling frame is a long bridge that is supported by a large number of hanging bolts arranged vertically on the ceiling and is installed in parallel at predetermined intervals, and a bridge between the parallel main bars at a right angle. It is composed of a large number of crossbars that are bridged together. Both the main bar and the cross bar are generally made of a material having a substantially inverted T-shaped cross section, which is usually formed by bending and pressing a steel plate.

As a conventional right-angled connecting structure of a main bar and a crossbar, (a). A vertical opening is provided on the vertical wall of the main bar, and a tongue extending from the end of the crossbar is inserted into this. (B). A joiner method in which right-angled bent joint plates are fitted to the vertical wall portions of the main bar and crossbar, respectively. (C). A one-sided fitting method in which a fitting piece bent at a right angle from the end of the crossbar is fitted to the locking part formed by cutting and raising the main wall upright wall. The three methods are mainly used, and the one-piece fitting method of (C) is generally used because of its excellent workability, strength, and stability.

FIG. 8 is a perspective view showing a main part of a coupling structure in the conventional one-sided fitting method (see Japanese Utility Model Laid-Open No. 2-99113), in which the main bar 1 has an arch shape formed by cutting and raising it on the three faces of the standing wall. The crossbar 20 has a locking portion A composed of a receiving portion 31, a retaining projection 32, and a rotation stopping standing piece 33. The crossbar 20 extends from a standing wall 21 at its end and is bent at a right angle, and a fitting piece 41. It has a fitting hole B on its tip end side, and a fitting hole B provided with a rotation stop groove 43 on its tip edge. They are connected at right angles. On the other end side of the main bar 20, a similar fitting portion bent in the opposite direction is provided, and on the standing wall surface of the adjacent main bar, the same fitting as above is provided corresponding to this fitting portion. By providing a similar right-angled connection structure by providing a stop, two parallel adjacent main bars are connected by a crossbar bridge, and the grid-like ceiling frame is constructed by repeating this connection work. However, the finished ceiling surface can be obtained by installing the ceiling plate and lighting equipment during this period.

[0005]

[Problems to be Solved by the Invention]

 When connecting a crossbar in a bridging manner between two main bars suspended in parallel along the ceiling ground by the conventional one-sided fitting method as described above, bend at right angles in opposite directions at both ends of the crossbar. The fitting portions B require a rotary insertion operation in which the tips of the respective fitting portions B move outward in one direction from the crossbar mounting position. A force that expands the parallel spacing of the main bar acts, and the main bar must be suspended and supported so as to be able to swing appropriately so as to respond to this, and even in this case, the fitting portion B has the locking portion A. By being rotationally fitted with respect to the above, especially the base portion on the side of the fitting portion B is likely to be deformed and deformed by an unreasonable force, and a gap is often generated in the joint portion, and the facing distance of the main bar is a prescribed value. There were problems such as the above. Moreover, after the grid-shaped ceiling frame was formed, it was extremely difficult to remove and attach the crossbar in the middle part, which made maintenance of the ceiling cumbersome.

[0006]

[Means for Solving the Problems]

 According to the present invention, the fitting engagement of the fitting portions curved at both ends of the cross bar with respect to the engaging portion provided on the standing wall of the main bar is performed along the longitudinal direction of the standing wall of the main bar in any direction on either side of the engaging portion. The above-mentioned problems of the conventional one-way one-sided fitting system are solved by making improvements so that the above can be realized. That is, the present invention has a structure in which a main bar and a cross bar forming a grid-shaped ceiling frame are connected at a right angle, and the main bar is composed of two upright claws which are cut and raised on one side of the upright wall and which are vertically and parallelly opposed to each other. The crossbar has a stop portion, and the crossbar is fitted into the engagement portion bent at a right angle to one side through a neck portion having a width narrower than the interval between the facing claw tips of the engagement portion extending from the end of the standing wall. And a pair of protruding tongues that can be elastically engaged with the locking portions formed by cutting and raising the upper and lower edges of the fitting piece. The gist is the connection structure of the grid-shaped ceiling frames, which is characterized by the fact that there are some.

Further, in the present invention, in the connecting structure of the lattice-shaped ceiling frame according to the above-mentioned gist, the locking portion of the main bar has a protruding ridge parallel to the standing claws on the standing wall between the vertically standing claws. The fitting portion of the crossbar has, between the fitting piece and the upper and lower edges of the outer surface of the neck, a groove groove parallel to the upper and lower edges to which the projecting stripe of the locking portion can fit. This is the content of the invention.

In the above description, the locking portion formed by the two rising claws protruding from the standing wall of the main bar is a standing member that stably fits and holds the fitting piece of the fitting portion bent at the end of the crossbar. It has the upright dimensions of the claws, the vertical dimension inside the two upstanding claws, the space between the tips of the upstanding claws, and the longitudinal direction of the main bar.In some cases, the vertical dimension of the upstanding claws may be changed. It is also possible to connect two pairs of small upright pawls at appropriate intervals to form a locking portion with four upright pawls. At the bases of the pair of upper and lower standing pawls, an opening formed by cutting and raising is formed between the standing pawls and is formed in parallel with a standing wall surface between the openings.

A pair of projecting tongues formed by cutting and raising at the upper and lower edges of the fitting piece bent at a right angle through the neck extending from the end of the crossbar are According to the forming conditions, the tongue ends of the pair of protruding tongues have opposite locking directions, and the distance between the tongue ends is connected to the opening of the standing claw base of the locking part or the side edge of the standing claw. The tip of the protruding tongue should be projected from the outer or inner surface of the fitting piece by approximately the same size as the vertical wall thickness of the main bar.

[0010]

[Action]

 In the coupling structure of the present invention, the main wall of the standing wall is cut and raised, and is bent and bent through the narrow neck extending from the end of the crossbar to the engaging portion formed by the two raised claws. The fitting pieces of the fitting portion are fitted from both sides of the locking portion, and the projecting tongue engages with the locking portion to facilitate locking and mounting the crossbar at a predetermined position. Therefore, crossbars with fitting parts bent in opposite directions at both ends should be inserted at right angles to the opposite standing wall surfaces of the two main bars suspended in parallel to move in the longitudinal direction of the main bars. This makes it possible to easily and accurately perform cross-linking by a right-angled bond at a predetermined position, and it is also extremely easy to remove and re-attach the crossbar at any position from the framework state.

[0011]

【Example】

 1 to 4 show a first embodiment of the present invention. FIG. 1 is an exploded perspective view showing the main part of the right-angled coupling structure, FIG. 2 is a front view of a main bar, and FIG. 4 is a side view and a top view in which the longitudinal middle of the crossbar is omitted. The main bar 1 is made of a metal plate-shaped material having a substantially inverted T-shaped cross section having an enormous head 2 on an upper portion of a standing wall 3 and horizontal flanges 4 extending on both sides at a lower portion thereof. Is provided with a locking portion A formed by two raised claws 6 and 7 which are provided by cutting and raising and which are vertically opposed and parallel to each other with a space therebetween. Reference numerals 8 and 9 denote two horizontal openings formed at the base of each standing claw formed by cutting and raising the standing claws 6 and 7. The openings 8 and 9 are located between both the standing claws 6 and 7. The three surfaces of the standing wall remain between the openings 8 and 9. Reference symbol a denotes the distance between the tips of the facing claws of the standing claws 6 and 7 of the locking portion A.

Since the cross bar 20 is obtained from a metal plate-shaped material having a substantially inverted T-shaped cross section similar to that of the main bar 1, the opposite claws of the engaging portion A extending from the standing wall 21 at the ends thereof. There is a fitting piece 23 which is fitted to the engaging portion A which is bent and connected at a right angle to one side via a neck portion 22 having a width b which is slightly narrower than the tip end distance a. A pair of upper and lower edges of the piece 23, the tips of which project toward the outer surface of the fitting piece 23 and elastically project into and engage with the openings 8, 9 of both the standing claws 6, 7 of the locking portion A. Projecting tongue pieces 24, 25 and 26, 27 are formed by cutting and raising parallel to the upper and lower edges of the pair of projecting tongue pieces with the locking directions of the pair of projecting tongue pieces being opposite. A fitting portion B having a vertically symmetrical shape is formed.

The locking portion A of the main bar 1 and the fitting portion B of the crossbar 20 have the above-described structure, and the neck portion 22 of the fitting portion B has a width b narrower than the distance a between the facing claw tips of the locking portion A. The fitting piece 23 can be fitted between the standing claws 6 and 7 by pressing the pair of protruding tongue pieces 24, 25 and 26, 27 at the upper and lower edges thereof onto the surface of the standing wall 3 of the main bar 1, respectively. The fitting portion B can be fitted in from both sides of the locking portion A, and the pair of projecting tongue pieces 24 and 25 at the upper edge of the fitting piece 23 are inserted into the opening 8 at the base of the standing claw 6 and the pair of lower edges. The projecting tongues 26 and 27 of the above-mentioned elastically rush-engage with the opening 9 of the base of the upright claw 7, whereby the crossbar 20 forms a right-angled joint structure at a predetermined position with respect to the main bar 1 and cannot be disengaged. Be locked.

As shown in FIGS. 1 and 2, the main bar 1 has a locking portion on one side of its standing wall 3 in order to connect separate crossbars 20, 20 ′ on both sides thereof in an orthogonal straight line. A, a predetermined distance from the locking portion A is provided on the other side, and a locking portion A'under the same condition is provided, and the crossbar 20 is provided at one end thereof as shown in FIGS. Under the same conditions as the fitting portion B, but at the other end, a fitting portion B'which is bent at a right angle in the opposite direction is provided. In FIG. 1, reference numerals 18 and 19 denote openings formed by cutting and raising the engaging claws A'formed on the other side of the main bar 1. The engaging parts A'are as shown in FIG. The standing claws 16 and 17 are formed on the surface of the standing wall 3 opposite to A to project.

FIG. 5 is a perspective view of an essential part showing a second embodiment, in which the locking portion A of the main bar 1 is under the same conditions as in the previous embodiment, but the end of the crossbar 20 with respect to this locking portion A is The fitting / engaging conditions of the fitting part B 1 are changed. The projecting tongue pieces (24 ', 25' and 26 ', 27') formed by cutting and raising the upper and lower edges of the fitting piece 23 of the fitting portion B are provided at the center of the upper and lower edges of the fitting piece 23 at the engaging portion. It is assumed that both the tongue ends project and face the inside of the fitting piece 23 by sandwiching the flat plate portion with the same dimension e as the dimension d in the longitudinal direction of the main bar of the standing claws 6 and 7 of A, and the fitting portion to the locking portion A. When B is fitted, the standing claws 6 and 7 are sandwiched and the projecting tongues facing each other are engaged with each other so that the crossbar 20 is connected to the main bar 1 at a right angle as in the first embodiment. It is a thing.

FIG. 6 is a perspective view of an essential part showing a third embodiment, in which the engaging portions A ′ provided on the standing wall 3 of the main bar 1 are cut and raised in the previous embodiment so that they are parallel to each other in the vertical direction. The standing claws are replaced by two small standing claws 6 ', 6'and 7', 7'which are formed by cutting and raising a small width at intervals m in the longitudinal direction of the main bar 1, and the crossbar. The protruding tongue pieces (24 ″, 25 ″) and (26 ″, 27 ″) provided on the upper and lower edges of the fitting piece 23 are used as the fitting portion B provided on the 20th portion of the engaging portion A ′. A flat plate portion having the same dimension n as the distance m between the claws 6'and 6'is sandwiched so that both tongue ends project and face the outside of the fitting piece 23, and the fitting portion B is fitted to the locking portion A. Finally, in the respective base openings of the small upstanding pawls 6 ', 6'and 7', 7'respective protruding tongues 24 ", 25", 26 "and 27" are engaged in a plunging manner, and the crossbar 20 is connected to the main bar 1 at a right angle as described above.

FIG. 7 is a perspective view of an essential part showing the fourth embodiment, in which the locking part A of the main bar 1 is a standing wall between the standing standing claws 6 and 7 which are vertically opposed to each other and project in parallel. Is provided with a protruding strip 10 having a length equal to or larger than the width of the standing claws in parallel with the standing claws 6 and 7, and a fitting piece 23 of the fitting part B of the crossbar 20 and upper and lower edges of the outer surface of the neck part 22. By providing a groove groove 30 parallel to the upper and lower edges of which the protruding strip 10 of the locking portion A can be fitted and fitted, a guide at the time of the fitting and insertion operation of the fitting portion B with respect to the locking portion A is provided. In addition, the fitting and connection state can be maintained stably and reliably. By extending the groove 30 from the neck portion 22 to the standing wall 21 of the crossbar 20 as shown in FIG. 7, the supporting strength of the fitting portion B can be reinforced. Reference numeral 11 is a recessed portion on the back surface of the protruding strip provided on the engaging portion A'formed on the other side of the main bar 1.

[0018]

[Effect of the device]

 In the connecting structure of the lattice-shaped ceiling frame of the present invention, the fitting connection of the engaging portion of the main bar and the fitting portion of the cross bar as described above can be easily and surely performed from any direction of the vertical wall of the main bar. Therefore, the main bar that is suspended in parallel along the ceiling material is fixed in place by eliminating the instability of swingably locking it as in the past and arranging it to the specified size. The operation of fitting and fixing or removing the crossbar can be performed easily and efficiently, and it has the effect of improving the efficiency of the construction of the finished ceiling surface and the maintenance management in the system ceiling method.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a main part of a first embodiment.

FIG. 2 is a front view of a main bar.

FIG. 3 is a side view in which a longitudinal middle portion of a crossbar is omitted.

FIG. 4 is a plan view in which a longitudinal middle portion of a crossbar is omitted.

FIG. 5 is a perspective view of a main part of the second embodiment.

FIG. 6 is a perspective view of a main part of the third embodiment.

FIG. 7 is a perspective view of a main part of the fourth embodiment.

FIG. 8 is a perspective view of a main part of a conventional one-sided fitting type coupling structure.

[Explanation of symbols]

 1 Main Bar 3 Standing Wall 6 Standing Claw 7 Standing Claw 8 Opening 9 Opening 10 Projecting Strip 20 Crossbar 21 Standing Wall 22 Neck 23 Fitting Piece 24 Projecting Tongue 25 Projecting Tongue 26 Projecting Tongue 27 Projecting Tongue 30 Recessed Groove A Locking part B Fitting part a Distance between tips of facing claws b Narrow width

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[Procedure amendment]

[Submission date] October 30, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Name of device

[Correction method] Change

[Correction content]

[Title of Invention] Lattice-shaped ceiling frame connection structure

Claims (2)

[Scope of utility model registration request] 1. In a right-angled connecting structure of a main bar (1) constituting a lattice-shaped ceiling frame and a cross bar (20), the main bar (1) is cut and raised on one side of a standing wall (3) and protruded. The cross bar (20) has a locking portion (A) composed of two standing claws (6, 7) facing each other in parallel with each other, and the cross bar (20) extends from the end of the standing wall (21). ) A fitting piece (23) fitted into the locking portion (A) bent at a right angle to one side through a neck portion (22) having a width (b) narrower than the distance (a) between the opposite claw tips. , A pair of projecting tongues (24, 25) (26, 26) that can be elastically engaged with the locking portion (A) formed by cutting and raising the upper and lower edges of the fitting piece (23).
27) A joint structure of a lattice-shaped ceiling frame having a fitting portion (B) consisting of 2. The engagement portion (A) of the main bar (1) is provided with a standing claw (6) (7) at the standing wall (3) between the standing claws (6) (7) facing each other vertically. The fitting portion (B) of the crossbar (20) has parallel protruding strips (10), and the engaging portion (B) is provided between the fitting piece (23) and the upper and lower edges of the outer surface of the neck portion (22). The connecting structure for a lattice-shaped ceiling frame according to claim 1, wherein the protruding strip (10) of (A) has concave groove strips (30) parallel to upper and lower edges.