JP2520882Y2 - Ceiling frame connection structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a technique for connecting ceiling frames at a right angle.

[Technology of Conventional Example] Conventionally, in order to connect the ceiling frames 1a and 1b to each other in an L shape or a T shape, the connection fittings 2'as shown in FIG. 7 were used to connect them as shown in FIG. . This connection fitting 2'is bent in an L shape with substantially the same width, and has a lower fitting portion 5 at the lower end and an upper fitting portion 9 at the upper end.
Then, each piece 2a 'of the L-shaped connecting fitting 2'is provided along the body portion of the ceiling frames 1a, 1b intersecting with each other in the L shape or the T shape, and is opposed to the upper and lower sides of the body portion 13 of each ceiling frame 1a, 1b. The upper fitting portion 9 and the lower fitting portion 5 of each piece of the connecting fitting 2'are fitted into the upper and lower groove portions 14 and 15 respectively provided by the above, and the claw portions 10 provided in the upper fitting portion 9 are caulked to fit into the upper groove portion 14. By fixing them, the ceiling frames 1a and 1b were connected to each other at a right angle.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional example, interlayer deformation occurs at the time of an earthquake and the wall 11 tilts as shown in FIG. Trying to keep the wall
The connecting fitting 2'at the connecting portion between the ceiling frame 1b fixed to 11 and the ceiling frame 1a suspended by the suspension bolts 22 is twisted with a very large force. Since the force when the interlayer deformation occurs is very large and the connecting fitting 2'cannot follow the deformation, the ceiling frames 1a and 1b are deformed and the claw portion 10 of the connecting fitting 2'is returned. As a result, there has been a problem that the connection strength between the ceiling frames 1a and 1b is reduced.

The present invention was devised in view of the problems of the above-mentioned conventional example, and the purpose thereof is to prevent damage or permanent strain from remaining on the ceiling frame or the connecting fitting even if deformation occurs due to external force during an earthquake. There is a ceiling frame connection structure that can be done.

[Means for Solving the Problems] In the ceiling frame connection structure of the present invention, when the ceiling frames 1 intersecting at right angles are connected by an L-shaped connection fitting 2, the connection fitting 2 is L-shaped in plan view. The corner portion 3 having the above-mentioned shape is cut out in a substantially V shape in the vertical direction so that the vertical width of the corner portion 3 becomes narrower toward the central bent portion, and the bent portion is provided at a substantially intermediate portion in the vertical direction of the corner portion 3. A rib having an L-shape in a plan view is provided in the lateral direction, and lower portions of the pieces 2a and 2b of the L-shaped connection fitting 2 are respectively set as lower fitting portions 5 which are fitted into the lower groove portions of the ceiling frame 1, and the respective lower fittings are provided. Vertical pieces 7 and bending pieces 6 whose upper ends are fitted in the upper groove portions of the ceiling frame 1 are alternately projected from the positions adjacent to the corner portions on the upper portion of the portion 5 in the direction away from the corner portions, and the adjacent vertical portions are adjacent to each other. Between the piece 7 and the bent piece 6 from top to bottom Be comprised by providing a notch extending to the upper end of the fitting portion 5, by adopting such a structure, it is obtained by solving the problems of the conventional example described above.

[Operation] However, in the present invention, the L-shaped corner portion 3 of the connection fitting 2 is cut out in a substantially V shape in the vertical direction so that the corner portion 3 is vertically moved closer to the central bent portion. The narrowed width prevents the corner portion 3 from being deformed and affecting other portions of the connecting fitting 2 when forced deformation is caused by an external force during an earthquake. Further, by providing a rib 20 which is L-shaped in a plan view in the lateral direction through a bent portion in a substantially middle portion in the vertical direction of the corner portion 3, when a bending force is generated,
In the corner portion 3, the rib 20 rotates about the axis and twists, which makes it difficult for distortion and deformation to remain. Moreover, as described above, the notch of the corner portion 3 in the V shape causes an earthquake. At times, when the forced deformation occurs due to an external force, the corner portion is prevented from being deformed so as to affect the other parts of the connecting fitting 2, and when the bending force is generated, the rib 20 rotates around the corner portion as an axis. However, the external force transmitted from the corner to the piece of the connecting fitting 2 resists the deformation by the vertical piece 17, and then bends by the notch. It absorbs the energy of deformation, and then the upper end is the upper groove 14 of the ceiling frame.
The bending piece 6 locked in the groove of the groove resists twisting and pulling, and in this way, it is possible to retain the resistance to pulling and twisting while absorbing the energy of the deformation in sequence. As a result, the entire piece does not come off the ceiling frame 1 at a time.

[Embodiment] The present invention will be described in detail below based on an embodiment shown in the accompanying drawings.

FIG. 3 shows an embodiment of the connecting fitting 2 used in the present invention. The connecting fitting 2 is bent in an L shape in a plan view, and the top and bottom of the corner portion 3 are each cut out in a V shape (in the accompanying drawings, reference numeral 4 is a V shape formed by cutting out in a V shape). The groove 3 has a groove-like shape), and the corner portion 3 having the L shape in plan view of the connecting fitting 2 is substantially V
The corner portion 3 is formed so that the vertical width becomes narrower toward the central bent portion by notching in a letter shape. A rib 20, which is L-shaped in a plan view, is provided in the lateral direction at a substantially middle portion in the vertical direction of the corner portion 3 which is cut out at the upper and lower sides through a bent portion. The rib 20 is, for example, a semi-cylindrical rib having a semicircular cross section as shown in FIG. Each of the pieces 2a and 2b of the L-shaped connecting fitting 2 has a lower fitting portion 5 at the lower portion, and the upper fitting portion 5 has a lower fitting portion 5 in order from a position adjacent to the corner portion toward a direction away from the corner portion. A plurality of vertical pieces 7 and bent pieces 6 whose upper ends are fitted in the upper groove portions of the ceiling frame 1 are alternately projected upward. Here, a cut is provided between the vertical piece 7 and the bent piece 6 which are adjacent to each other, from the upper side to the lower side to reach the upper end of the lower fitting portion 5. The bending piece 6 is bent in a substantially V shape or an arc shape, a hole portion 8 is provided at a substantially central portion of the bending piece 6, and an upper fitting portion 9 is provided at a tip end portion of the bending piece 6. A saw-toothed claw portion 10 is provided at the tip of the upper fitting portion 9.

The ceiling frame 1 includes an inverted T-shaped ceiling frame 1a that is hung from a slab or the like with hanging bolts and the like, and a ceiling frame 1b that is fixed to a wall 11 by a fixing tool 12. Upper and lower groove portions 14 and 15 are provided in the upper and lower portions of both side surfaces of the body portion 13 of the ceiling frame 1a so as to vertically face each other. A narrow groove portion having a narrow width is continuously provided behind the groove of the upper groove portion 14. Further, the ceiling frame 1b is provided with upper and lower groove portions 14 and 15 which are vertically opposed to each other on an upper portion of one side of the body portion 13. Ceiling frame 1a,
The horizontal piece 16 at the bottom of 1b is a piece for mounting the ceiling material.
Further, a head 17 is provided above the ceiling frame 1a, and a lower part of a suspender (not shown) attached to a lower portion of a hanging bolt suspended from a building frame such as a slab is attached to the head 17. The ceiling frame 1a is hung at.

Then, the ceiling frame 4a and the ceiling frame 4b are abutted at a right angle in an L-shape or a T-shape, and the end portions of the ceiling frame 1 are connected by the connecting fittings 2 as shown in FIGS. 1 and 2. In order to connect with the connecting metal fitting 2, the procedure is as follows. That is, first, the lower lower fitting portions 5 of the respective pieces 2a and 2b of the connection fitting 2 are respectively attached to the ceiling frame 4a and the ceiling frame 4a.
Fit into each lower groove 15 with 4b. Next, the bent piece 6 bent in a dogleg shape is pressed and crushed by a caulking tool such as a spanner to squeeze the claw portion 10 into the groove of the upper groove portion 14 so as to be fixed. Here, the bending piece 6
When the hole 8 is provided at the substantially central portion of the bending piece 6 as shown in FIG. 3, the bending piece 6 is more likely to be deformed and buckled than when the hole 8 is not provided. Buckling due to the completion of biting the claw portion 10 into the groove of the upper groove portion 14 can be confirmed by visual inspection and feel during operation, and the completion of the connection state can be confirmed.

By the way, at the time of an earthquake, the wall 11 has a maximum of 1/20 due to interlayer deformation.
There may be a displacement of 5 mm at the connection between the ceiling frame 1a and the ceiling frame 1b due to 0 inclination. At this time, the connecting fitting 2 is subjected to a pulling force Ft and a bending force Fn as shown in FIG. 4, but in the present invention, the L-shaped corner portion 3 of the connecting fitting 2 in a plan view is substantially V-shaped up and down. When the above-mentioned force acts, the portion indicated by diagonal lines on the ceiling frame 1b side of the connection fitting 2 in FIG. It is deformed by receiving strain. In this way, only the portion shown by the diagonal lines in FIG. 4 needs to be deformed, so that the other claw portions 10 and the like are not affected.

Further, as described above, the corner portion 3 whose upper and lower portions are cut out in a substantially V shape is provided with a rib 20 which is L-shaped in a plan view in a lateral direction at a substantially middle portion in the vertical direction via a bent portion. Therefore, when the bending force (rotational force) Fn is generated, the semicircular rib 20 does not rotate and twist about the axis so that the strain and the influence of the bending force are not exerted on other parts of the connection fitting 2. In addition, since the semicircular rib 20 is twisted around the axis, when the bending force is canceled, it returns to its original state due to the restoring force of the semicircular rib 20, and deformation is less likely to remain. Is. In the present invention, as described above, the corner portion 3 is notched in a V shape, so that when forced deformation occurs due to an external force during an earthquake, the corner portion deforms and affects other portions of the connecting fitting 2. The ribs 20 serve as shafts at the corners to rotate and twist to prevent strain deformation and the like from remaining when the bending force is generated. The transmitted external force then resists deformation by the vertical piece 17, then absorbs the deformation energy for bending by the notch, and then the upper end is locked in the groove deep in the upper groove portion 14 of the ceiling frame. The bent piece 6 that is formed resists twisting and pulling, and in this way it is possible to retain the resistance to pulling and twisting while absorbing the energy of the sequential deformation, and as a result, the entire piece once Out of the ceiling frame 1 It is that there is no.

[Advantage of the Invention] In the present invention, as described above, in the case where the ceiling frames intersecting at right angles are connected by the L-shaped connecting fitting, the L-shaped corner portion of the connecting fitting is seen in a plan view. The upper and lower sides are notched in a substantially V shape and the vertical width is narrowed toward the central bent portion, so that the corner portion of the connecting fitting is deformed and connected when forced deformation occurs due to external force during an earthquake. It does not affect other parts of the metal fittings, and as a result, even if deformation occurs due to external force during an earthquake, the ceiling frame and the connecting metal fittings will not be damaged or permanently deformed. Since an L-shaped rib in a plan view is provided in the lateral direction through a bent portion in a substantially middle portion in the vertical direction of the portion, when the bending force is generated, the rib rotates about the axis and twists. Strain and bending force do not affect other parts of the connection fitting Moreover, since the rib rotates and twists around the shaft as the axis, when the bending force is cancelled, it returns to its original state due to the restoring force of the rib, and it is difficult for deformation to remain.
Moreover, as described above, the V-shaped notch in the corner portion absorbs the deformation and the rib makes it difficult for strain deformation to remain. The lower part of each is set as the lower fitting part to be fitted into the lower groove part of the ceiling frame, and the vertical piece and the upper end are placed on the ceiling frame in order from the position adjacent to the corner part to the top of each lower fitting part in the direction away from the corner part. A plurality of bending pieces to be fitted into the groove are alternately projected, and a cut is provided between the adjacent vertical piece and the bending piece from the top to the bottom to the upper end of the lower fitting part. The external force transmitted to the piece then resists the deformation by the vertical piece, then absorbs the deformation energy for bending by the notch, and then the upper end is locked in the groove of the upper groove of the ceiling frame. The bent piece resists twisting and pulling, and in this way it is possible to maintain the resistance to pulling and twisting while absorbing the energy of deformation in sequence, and as a result, strain deformation occurs at the corners. The whole piece does not come off from the ceiling frame at the same time so that it does not remain. Also, fit the lower fitting part of the lower part of each piece of the L-shaped connecting fitting to the lower groove part of the ceiling frame and bend it. Since the upper end of the piece is fitted into the upper groove of the ceiling frame, make the bent piece face the upper groove in a bent state, press the bent piece in this state to extend it, and let the upper end bite into the groove of the upper groove. The upper groove of the upper end of the bent piece can be easily and reliably locked in the groove, and the buckling of the bent piece allows the upper groove of the upper end of the bent piece to be locked in the groove deep. Bent easily be confirmed visually by whether are, also, those easily be confirmed by touch when bending also bent piece when working.

[Brief description of drawings]

FIG. 1 is a front sectional view of the present invention, FIG. 2 is a side sectional view of the same as above, FIG. 3 is a perspective view of a connecting fitting used therein, and FIG. 4 is a deformation of the connecting fitting when an external force is applied thereto. 5 is a sectional view of the rib portion of the same as above, FIG. 6 is a front sectional view of a conventional example, FIG. 7 is a perspective view of a connecting fitting of the conventional example, and FIG. 8 shows a building frame during an earthquake. It is explanatory drawing at the time of deform | transforming, 1 is a ceiling frame, 2 is a connection metal fitting, 3 is a corner part.

Claims (1)

(57) [Scope of utility model registration request] Claim: What is claimed is: 1. When the ceiling frames intersecting at right angles are connected to each other by an L-shaped connecting fitting, the connecting fitting is L in plan view.
-Shaped corner portions are cut out in a substantially V shape in the upper and lower sides to narrow the vertical width toward the central bent portion side, and the plan view is seen through the bent portion at a substantially middle portion in the vertical direction of the corner portion. L-shaped ribs are provided in the lateral direction, and the lower part of each piece of the L-shaped connecting fitting is fitted into the lower groove part of the ceiling frame, and the lower fitting part is fitted to the upper part of each lower fitting part. Vertical pieces and bent pieces whose upper ends are fitted in the upper groove of the ceiling frame are alternately projected in order from the position adjacent to the direction to the direction away from the corner, and the vertical pieces and the bent pieces adjacent to each other project downward from top to bottom. A ceiling frame connection structure that is provided with a notch that extends to the upper end of the lower fitting part.