JP5623246B2 - Connecting mechanism for suspension plate for ceiling board - Google Patents

Description

  The present invention relates to a connecting mechanism for connecting ceiling plate suspension rods for suspending a ceiling plate in a T-shape.

  As shown in FIG. 18, the ceiling board suspension rod 1 is assembled in a lattice shape, and by placing the end of the ceiling board p thereon, a large number of ceiling boards p are supported in an aligned manner. It constitutes the ceiling. Specifically, as shown in FIG. 4, the ceiling plate suspension rod 1 has a substantially inverted T-shaped cross section, and supports the lower horizontal portion and the edge of the ceiling plate p at both side edges. The locking edge portions 3 and 3 are provided, and a wide locking ridge portion 2 to which the hanger h is fixed to the upper end of the main plate portion 4 is provided.

  Here, when assembling the ceiling plate suspension rods in a lattice shape, the edge of the other ceiling plate suspension rod is brought into contact with the side surface of one ceiling plate suspension rod and connected in a T-shape. There is a case. As a connection mechanism of such a ceiling plate suspension rod, a connection projection protruding from the end of the other ceiling plate suspension rod is formed on the side surface of the main plate portion of one ceiling plate suspension rod. The structure which press-fits into an insertion hole is employ | adopted (refer patent document 1, 2).

  More specifically, in the connection mechanism described in Patent Document 1, only the front edge is coupled to the main surface of the connection protrusion, and the cut-and-raised part that opens the rear edge is formed in the thickness direction in the connection protrusion. ing. In such a configuration, when the coupling protrusion is press-fitted into the insertion hole, the cut-and-raised part that has passed through the insertion hole makes the rear edge abut the side surface of the main plate at the periphery of the insertion hole, so that the coupling protrusion is detached from the insertion hole. It becomes impossible.

  Moreover, in the connection mechanism described in Patent Document 2, the connection protrusion has a U shape formed by folding back approximately 180 degrees. In such a configuration, when the connecting projection is press-fitted into the insertion hole, the folded portion that has passed through the insertion hole makes the rear edge abut the side surface of the main plate at the periphery of the insertion hole, so that the connection projection cannot be detached from the insertion hole. Become.

JP 2007-247403 A JP 2002-285675 A

  By the way, the connection mechanism of the ceiling board suspension rod is required to further improve the connection strength. The present invention has been made in view of the present situation, and an object of the present invention is to provide a connection mechanism for a ceiling plate suspension rod capable of realizing higher connection strength than the conventional configuration.

  The present invention relates to a ceiling plate suspension rod having a T-shaped connection between the ceiling plate suspension rods each having a locking edge portion that supports the end portion of the ceiling plate at the lower end of the main plate portion. A vertically long insertion hole formed in the main plate portion and a connection protrusion protruding from the end of the other ceiling plate suspension rod, and only the front edge of the connection protrusion is the connection protrusion. A cut-and-raised portion is formed in the thickness direction, which is coupled to the main surface of the portion, and the rear edge is opened. The cut-and-raised portion bulges from the main surface of the cut-and-raised portion, and the rear edge is rearward A regulation rib in the front-rear direction is formed as a regulation edge to be opened, and by pressing the coupling protrusion into the insertion hole, the regulation edge of the regulation rib comes into contact with the side surface of the main plate at the periphery of the insertion hole, and the coupling It is a connection mechanism for a ceiling plate suspension rod characterized in that the protrusion cannot be removed from the insertion hole.

  In such a configuration, the cut-and-raised height of the cut-and-raised portion provided in the connecting projection of the other ceiling-plate suspension rod from the main surface of the connecting-projecting portion is It is set slightly larger than the lateral width of the insertion hole of the suspension rod. Furthermore, the regulation rib bulges from the main surface of the cut and raised portion in the cut and raised direction of the cut and raised portion. Thereby, when inserting a connection protrusion into an insertion hole, the top part of a regulation rib contacts with an insertion hole side edge, and a cut and raised part is compressed so that an insertion direction may be met. When the coupling protrusion is press-fitted against the elastic force, the regulating rib passes through the insertion hole, the cut-and-raised portion is expanded, and the regulating edge of the regulating rib is in contact with the side surface of the main plate at the periphery of the insertion hole. As a result of the contact, the connecting projection cannot be detached from the insertion hole, and the ceiling plate suspension rods are connected to each other.

  According to the inventor's research, when the rear edge of the front-rear direction regulating rib is brought into direct contact with the side surface of the main plate as in the present invention, it is raised against the force in the direction of pulling out the connecting projection. As a result, it is difficult for the portion to be deformed, and as a result, a stronger connection strength can be obtained as compared with the conventional configuration described in Patent Document 1. This is because, in the conventional configuration described in Patent Document 1, the trailing edge of the cut-and-raised portion that comes into contact with the side surface of the main plate portion is flat, whereas in the present invention, the bulging regulating rib is brought into direct contact with the side surface of the main plate portion. For this reason, it is in the contact part with the side surface of the main plate part, and the raised part is less likely to buckle against the force in the direction of pulling out the connecting protrusion.

  Another aspect of the present invention is a connecting mechanism for connecting the ceiling plate suspension rods each having a locking edge portion supporting the end portion of the ceiling plate at the lower end of the main plate portion in a T shape. A vertically long insertion hole formed in the main plate portion of the ceiling plate suspension rod, and a connection protrusion protruding from the end portion of the other ceiling plate suspension rod, the connection protrusion being approximately 180 It forms a U-shape that is bent back and forth, and the connecting protrusion has a folded-back portion formed with a regulating rib in the front-rear direction that bulges from the main surface of the folded-up portion and opens the rear edge backward. The connecting protrusion is press-fitted into the insertion hole so that the restriction edge of the restriction rib comes into contact with the side surface of the main plate at the periphery of the insertion hole so that the connection protrusion cannot be detached from the insertion hole. It is the connection mechanism of the suspension rod for ceiling boards characterized by these. According to the inventor's research, even in such a configuration, the folded portion is less likely to be deformed with respect to the force in the direction of pulling out the connecting protrusion, and thereby, the connection strength is stronger than the conventional configuration described in Patent Document 2. Can be obtained. In the present invention, as in the case of the cut-and-raised portion described above, the bulging regulating rib is brought into direct contact with the side surface of the main plate portion. This is because the folded portion is less likely to buckle with respect to the force in the pulling direction.

  Moreover, in this invention, it is proposed that the control rib is formed toward back from the front edge vicinity of the said cut-and-raised part. Since the leading edge of the cut-and-raised part is a high-strength part that hits the proximal end of the cut-and-raised part and bends or curves, by forming a regulating rib from such part, the force in the direction of pulling out the connecting protrusion On the other hand, the cut-and-raised part is more difficult to deform, and the connection strength can be further improved. For the same reason, when the restriction rib is formed in the folded portion, it is proposed that the restriction rib is formed from the vicinity of the front edge of the folded portion toward the rear.

  Further, in the present invention, the restriction rib has a configuration in which the upper and lower edges and the front edge are continuous with other portions of the raised part or the folded part, and only the restriction edge of the rear edge is opened. Proposed. In such a configuration, the stress applied to the regulation rib from the regulation edge is widely dispersed around the regulation rib, so that the cut-and-raised part and the folded-back part are extremely difficult to deform, and the connecting projection part is pulled out. The durability against force can be improved.

  In the present invention, the rear edge of the cut-and-raised part and the folded-back part is located rearward of the restriction edge of the restriction rib, and the restriction edge is in contact with the side surface of the main plate part. It is proposed that the main surface of the cut-and-raised part or the folded-back part is configured to be in elastic contact with the side edge of the insertion hole. In such a configuration, the cut-and-raised portion and the folded portion are in a connected state, and the cut-and-raised portion and the folded portion are further expanded by causing the main surface to elastically contact the side edge of the insertion hole. Therefore, even when a strong force is applied in the direction of pulling out the connecting protrusion, the cut-and-raised part and the folded-back part are not deformed in the expanding direction, and the connected state becomes more stable.

  Further, in the present invention, a restricting portion is formed at the end of the other ceiling plate suspension rod so that the front edge abuts the side surface of the main plate portion of the one ceiling plate suspension rod. A configuration is proposed in which the distance between the front edge of the restriction portion and the restriction end edge of the restriction rib is set so as to substantially match the thickness of the main plate portion of the ceiling plate suspension rod. In this configuration, when the ceiling plate suspension rods are connected to each other, the main plate portion of one ceiling plate suspension rod is connected to the regulation edge and the regulation portion of the regulation rib of the other ceiling plate suspension rod. It becomes the form clamped by the front edge of the, and the connection without wobbling is realized.

  As described above, according to the connection mechanism of the ceiling plate suspension rod of the present invention, the connection strength can be improved as compared with the conventional configuration.

It is a vertical side view which shows the connection mechanism of the suspension board 1 for ceiling boards of an Example. It is a top view which crosses and shows the connection mechanism of the suspension board 1 for ceiling boards by the height of the control rib 25. FIG. It is a front view which shows the insertion hole 10 of the suspension rod 1 for ceiling boards. It is a vertical side view which shows the insertion hole 10 of the suspension rod 1 for ceiling boards. It is a side view which shows the connection protrusion 22 with which the suspension board 1 for ceiling boards was equipped. It is the sectional view on the AA line in FIG. 5A is a sectional view taken along line BB in FIG. 5, FIG. 5B is a sectional view taken along line CC in FIG. 5, and FIG. 5C is a sectional view taken along line DD in FIG. It is explanatory drawing which shows the action | operation of a connection mechanism, (a) shows the state before inserting the connection protrusion 22 in the insertion hole 10, (b) shows the state in the middle of insertion, (c) shows after insertion. Indicates the connected state. It is a side view which shows the connection protrusion 22a of a modification. It is a cross-sectional view which shows the connection protrusion part 22a of a modification. It is a side view which shows the connection protrusion 22b of a modification. It is a cross-sectional view which shows the connection protrusion 22b of the modification. It is a side view which shows the connection protrusion 22c of a modification. It is AA sectional view taken on the line in FIG. It is a side view which shows the connection protrusion part 22d and the control part 21a of a modification. It is a cross-sectional view which shows the connection protrusion part 22d and the control part 21a of a modification. It is a cross-sectional view showing a connecting projection 22e of a modification. It is a perspective view which shows the connection aspect of the suspension board 1 for ceiling boards.

  Embodiments of the present invention are described according to the following examples.

  FIGS. 1-5 shows the ceiling board suspension rod 1 mutually connected by the connection mechanism of this invention. As shown in FIGS. 1 and 4, the ceiling board suspension rod 1 has a substantially inverted T-shaped cross section, and the lower horizontal portion is defined as locking edges 3, 3. Then, the end portions of the ceiling plate p (see FIG. 18) are supported. On the other hand, a wide locking ridge 2 to which a hanger h (see FIG. 18) is fixed is provided on the upper end of the main plate portion 4 of the ceiling plate suspension rod 1.

  The ceiling board suspension rods 1 and 1 are connected in a T-shape. Then, when the ceiling plate suspension rods 1 and 1 are coupled in the same position on both sides of the ceiling plate suspension rod 1, respectively, as shown in FIG. 1 and 1 are connected in an intersecting manner.

Such a coupling mechanism will be described.
As shown in FIGS. 3 and 4, in one ceiling board suspension rod 1, vertically long insertion holes 10, 10 are formed in the main plate portion 4 so as to communicate with each other. Furthermore, the end portions of the other ceiling plate suspension rods 1 and 1 can be connected to the one ceiling plate suspension rod 1 on both sides of the main plate portion 4 by the both insertion holes 10 and 10. As described above, a crossed connection configuration may be exhibited.

  On the other hand, as shown in FIGS. 1 and 2, from the ends of the ceiling plate suspension rods 1, 1 connected on both sides of the ceiling plate suspension rod 1 through the insertion holes 10, there are connecting projections. 22 is formed. As shown in FIG. 2, the connecting protrusion 22 is formed so as to slightly protrude from the surface of the main plate portion 4 in the thickness direction, as shown in FIG. 2. Are formed in the front-rear direction.

  As shown in FIGS. 5 to 7, the coupling protrusion 22 includes a cut-and-raised portion 24 that opens the rear edge 24 a at the center thereof. The cut-and-raised portion 24 has a front edge that is continuous with the main surface f of the coupling protrusion 22 as a connection base 24b, and the connection base 24b is curved to cut from the main surface f of the connection protrusion 22 in the thickness direction. It was raised and has a U-shape when viewed from the side. The vertical length is substantially equal to the vertical length of the insertion hole 10. Further, the cut and raised height of the cut and raised portion 24 from the main surface f of the connecting protrusion 22 is set to be slightly larger than the lateral width of the insertion hole 10.

  As shown in FIGS. 5 to 7, the cut-and-raised portion 24 has a front and rear regulating rib 25 that bulges from the main surface g of the cut-and-raised portion 24 to the cut-and-raised side of the cut and raised portion 24. Is formed. As shown in FIG. 5, the restriction rib 25 is formed from the center of the connection base 24 b toward the rear. The restriction rib 25 has a rear edge as a restriction edge 26 that opens rearward, and the upper and lower edges and the front edge are continuous with other parts of the cut and raised portion 24. The regulating rib 25 has an arcuate cross section as shown in FIG. 7C, and the regulating end edge 26 is the main surface of the cut and raised portion 24 as shown in FIGS. 7A and 7B. It is opened rearward in a state of bulging from g.

  Furthermore, at the end of each ceiling plate suspension rod 1, 1 where the connecting projection 22 is formed, a regulating portion 21 that makes the front edge e contact the side surface of the main plate portion 4 of the ceiling plate suspension rod 1. Arranged. The restricting portions 21 are provided above and below the connecting projections 22, and are in the long axis direction by an amount corresponding to the width w (see FIG. 1) of the locking edge portion 3 from the end edge of the ceiling plate suspension rod 1. Protruding. Further, the front edge e of the restricting portion 21 is positioned in front of the rear edge 24a of the cut-and-raised portion 24, and the front-and-rear distance from the restricting edge 26 of the restricting rib 25 is set to the main plate portion of the ceiling board suspension rod 1 The thickness is almost equal to the thickness of 4.

  Here, the ceiling board suspension rod 1 of the present embodiment is configured by a metal plate made of steel or the like having high spring properties. In the present embodiment, the connecting protrusion 22 is formed integrally with the main body of the ceiling plate suspension rod 1, but the connecting protrusion 22 is formed of another metal plate and is suspended from the ceiling plate. It may be fixed to the end of the ridge 1.

  In the above-described configuration, in order to connect the edge of the ceiling plate suspension rod 1 to the main plate portion 4 of one ceiling plate suspension rod 1, the connection protrusion 22 is inserted as shown in FIG. It is only necessary to press fit into the hole 10. Thereby, the cut-and-raised portion 24 is elastically deformed by pressing the top portion of the regulating rib 25 by the side edge of the insertion hole 10 and can pass through the insertion hole 10 (see FIG. 8B). When further inserted, the regulation edge 26 of the regulation rib 25 passes through the insertion hole 10 at the position where the front edge e of the regulation part 21 contacts the main plate part 4, and the cut-and-raised part 24 expands (FIG. 8 (c)). And the main surface g of the cut-and-raised part 24 is in elastic contact with the side edge of the insertion hole 10, and the expansion of the cut-and-raised part 24 is restricted, whereby the two ceiling plate suspension rods 1 and 1 are formed. Strongly connected.

  In such a connected state, as shown in FIG. 8C, the restriction edge 26 of the restriction rib 25 of the cut-and-raised part 24 is in contact with the main plate part 4 near the insertion hole 10 side. The protrusion 22 is restrained so as not to be detached from the insertion hole 10. At the same time, the cut-and-raised portion 24 has its main surface elastically contacted with the side edge of the insertion hole 10 to restrict its expansion, so that even if a force acts in the direction of pulling out the connecting projection 22, The raising portion 24 does not open outward and deform.

  Moreover, since the space | interval of the front edge e of the control part 21 and the control edge 26 of the control rib 25 is substantially equal to the thickness of the main board part 4, in this connection state, one suspension board 1 for ceiling boards The main plate portion 4 is sandwiched between the restricting portion 21 and the restricting rib 25, so that the two ceiling plate suspension rods 1 and 1 are connected without wobbling.

  Here, in such a coupling mechanism, since the bulging regulating rib 25 is brought into direct contact with the side surface of the main plate portion 4, if a force is applied in the direction of pulling out the coupling protrusion 22, the strength against the force is increased. An excellent rib shape directly resists. For this reason, in this embodiment, even when an extremely strong force is applied in the direction in which the connecting protrusion 22 is pulled out, the cut-and-raised portion 24 does not buckle, and a stronger connection strength is realized as compared with the conventional configuration.

  In addition, since the restriction rib 25 has an edge other than the restriction edge 26 cut and raised and is continuous with other portions of the portion 24, the stress applied from the restriction edge 26 to the restriction rib 25 is widely dispersed around. Thus, deformation due to stress is less likely to occur in the peripheral portion of the regulating rib 25.

  Further, the regulation rib 25 is formed from the connection base portion 24 b of the cut and raised portion 24 toward the rear. Since the connection base portion 24b is a portion that is cut and raised in a curved shape and is extremely difficult to deform, in this embodiment, the connection base portion 24b supports the regulating rib 25 from the front, so that the cut and raised portion 24 is further deformed. It has become difficult.

  Further, in this connection mechanism, in order to release the connection, the regulating rib 25 is positioned in the insertion hole 10 simply by pushing the rear edge 24a of the cut and raised portion 24 protruding from the insertion hole 10 with a screwdriver or the like. Since the restraint is released, the connecting projection 22 can be easily detached from the insertion hole 10. For this reason, the connection release is also easy.

  As described above, since this connection is performed to the insertion holes 10 and 10 adjacent to each other on both sides of the ceiling plate suspension rod 1, as shown in FIG. 2, the ceiling plate suspension rods 1 and 1 are performed. , 1 are mutually orthogonal.

  Moreover, since this connection protrusion 22 can be manufactured with the same effort as a conventional connection protrusion by press molding, the connection mechanism of a present Example can improve connection strength, without raising manufacturing cost. .

  Next, a modified example in which the configuration of the above-described embodiment is changed will be described. Note that, in the following modifications, the configuration is the same as that of the above-described embodiment except for the changed portion. Therefore, in the same parts of the configuration, the same reference numerals are used in the drawings, and the detailed description is omitted.

  9 and 10 are modifications in which the regulating rib 25 according to the present invention is formed on the U-shaped connecting projection 22a. Specifically, in this modification, the connecting protrusion 22a protrudes forward from the end of the ceiling plate suspension rod 1 and is folded back approximately 180 degrees by the bent portion 30. A U-shape is formed by extending the folded portion 27 backward. The restriction rib 25 is formed as a restriction edge 26 that is formed from the vicinity of the bent portion 30 toward the rear so as to bulge from the main surface g of the turned-up portion 27 of the connection protrusion 22a and opens the rear edge rearward. Yes. When the connecting protrusion 22 a is press-fitted into the insertion hole 10, the folded-back portion 27 is elastically deformed by pressing the top of the regulating rib 25 by the side edge of the insertion hole 10 and can pass through the insertion hole 10. Then, when the regulating end edge 26 of the regulating rib 25 passes through the insertion hole 10, the folded portion 27 expands, the regulating edge 26 contacts the side surface of the main plate portion 4, and the coupling protrusion 22 a cannot be detached and connected. It becomes a state. Further, in this connected state, the folded-back portion 27 elastically contacts the main surface g with the side edge of the insertion hole 10 behind the regulating end edge 26, thereby restricting the expansion of the connecting projection 22a. The

  FIGS. 11 and 12 show another modified connecting projection 22b. In this modified example, the cut-and-raised portion 24 of the connecting projection 22b is missing behind the regulating edge 26. FIG. It has a shape. Thus, the side shape of the cut-and-raised portion 24 according to the present invention is not limited to the embodiment described above, and can be variously changed.

  13 and 14 show a connecting projection 22c according to another modification. In the coupling protrusion 22c of this modification, two restriction ribs 25a and 25a are formed so as to form a pair above and below the cut-and-raised part 24, and the restriction edge 26 corresponding to the rear edge of each restriction rib 25a and 25a. 26 are in contact with the side surface of the main plate portion 4. Thus, in the present invention, a plurality of regulating ribs can be provided on the connecting projection.

  15 and 16 show a connecting projection 22d and a restricting portion 21a according to another modification. In such a modification, the connecting protrusion 22d is formed with a bent portion 29 formed by bending the upper and lower ends at a right angle, and the restricting portion 21a is formed from the base end of the bent portion 29. It extends in the short direction. As described above, the restricting portion according to the present invention can be extended from the connecting projection without being directly coupled from the end of the suspension rod main body.

  FIG. 17 shows a connecting projection 22e according to another modification. In such a modification, the cut-and-raised portion 24 is cut and raised in the thickness direction from the main surface of the connecting protrusion 22e by bending the connection base portion 24b into a letter-shape. Thus, the cut-and-raised portion according to the present invention is not limited to the one that has been cut and raised by bending the connection base portion 24b (see FIG. 6).

  Moreover, the form of an Example can be variously changed within the range which does not deviate from the summary of this invention other than the said modification. For example, in the above-described embodiment, the restriction rib bulges so as to form an arc shape in cross section, but the cross-sectional shape of the restriction rib is not limited to the arc shape, and a bent shape or the like can also be adopted. Also, the shape of the insertion hole for inserting the connecting protrusion is not limited to the shape of the embodiment, and can be appropriately changed according to the shape of the connecting protrusion.

DESCRIPTION OF SYMBOLS 1 Ceiling board suspension hook 2 Locking ridge 3 Locking edge 4 Main plate 10 Insertion hole 21, 21a Restriction part 22,22a-22e Connection protrusion 24 Cut-up part 24a Connection base 24b Rear edge 25, 25a Restriction rib 26 Restriction edge e Front edge of restriction part f Main surface of connecting protrusion g Main surface of cut-and-raised part p Ceiling plate

Claims (6)

In the connecting mechanism for connecting the ceiling plate suspension rods each having a locking edge for supporting the end portion of the ceiling plate to the lower end of the main plate portion in a T shape,
A vertically long insertion hole formed in a main plate portion of one ceiling plate suspension rod, and a connecting projection protruding from an end portion of the other ceiling plate suspension rod,
In the connection protrusion, only the front edge is coupled with the main surface of the connection protrusion, and a cut-and-raised part that opens the rear edge is formed in the thickness direction,
The cut-and-raised part is formed with a regulating rib in the front-rear direction that bulges from the main surface of the cut-and-raised part and opens the rear edge backward.
The connecting projection is press-fitted into the insertion hole so that the regulating edge of the regulating rib comes into contact with the side surface of the main plate at the periphery of the insertion hole, and the connecting projection cannot be detached from the insertion hole. The connecting mechanism of the ceiling plate suspension rod.   The connection mechanism for a ceiling board suspension rod according to claim 1, wherein the restriction rib is formed from the vicinity of the front edge of the cut-and-raised portion toward the rear.   The upper and lower edges and the front edge of the restriction rib are continuous with other parts of the cut and raised portion, and only the restriction edge of the rear edge is open. The connection mechanism of the suspension rod for ceiling boards as described in 2.   The rear edge of the cut-and-raised part is positioned behind the restriction edge of the restriction rib, and the main surface of the cut-and-raised part is inserted in a state where the restriction edge is in contact with the side surface of the main plate part. The connecting mechanism for a ceiling board suspension rod according to any one of claims 1 to 3, wherein the connection mechanism is elastically in contact with a side edge of the hole. In the connecting mechanism for connecting the ceiling plate suspension rods each having a locking edge for supporting the end portion of the ceiling plate to the lower end of the main plate portion in a T shape,
A vertically long insertion hole formed in a main plate portion of one ceiling plate suspension rod, and a connecting projection protruding from an end portion of the other ceiling plate suspension rod,
The connecting protrusion has a U-shape that is folded back approximately 180 degrees,
A front-rear direction regulating rib is formed on the turned-up portion of the connecting projection so as to bulge from the main surface of the turned-up portion and the rear edge is opened to the rear.
The connecting projection is press-fitted into the insertion hole so that the regulating edge of the regulating rib comes into contact with the side surface of the main plate at the periphery of the insertion hole, and the connecting projection cannot be detached from the insertion hole. The connecting mechanism of the ceiling plate suspension rod. At the end of the other ceiling plate suspension rod, a restricting portion is formed that abuts the front edge on the side surface of the main plate portion of the one ceiling plate suspension rod,
6. The space between the front edge of the restricting portion and the restricting end edge of the restricting rib substantially matches the thickness of the main plate portion of the one ceiling plate suspension rod. The connection mechanism of the ceiling board suspension rod of any one of these.

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