JP4160890B2 - Corrugated board mounting bracket - Google Patents

Description

  The present invention relates to an improvement in a metal fitting used for attaching a step plate to a side plate constituting a staircase.

  There is a staircase structure in which a step plate is supported and fixed on the side surface of an intermediate support member whose upper end is formed in a staircase shape, with the upper surface of a receiving metal fitting provided so as to be flush with the upper surface of each step portion. (See Patent Document 1)

However, it is not always easy to provide the receiving metal fitting so that the upper surface of the receiving metal fitting and the upper surface of the stepped portion of the intermediate support member are flush with each other. If the two are not flush with each other, in some cases, it becomes impossible to ensure the levelness of the corrugated board. Further, the load applied to the step plate is applied only to the receiving metal fitting, or is applied only to the step portion of the intermediate support member. Further, even if the two are finished flush with each other, the receiving metal is only fixed to the side surface of the intermediate support member, so that the load acting on the step plate causes the receiving metal to be pulled away from the intermediate support member. It tends to be affected by.
Japanese Patent No. 3348161

  The main problem to be solved by the present invention is that the step plate can be easily attached to the side plate constituting the stair in a state where the step plate can be appropriately supported, and the support state of the step plate is stably secured. An object of the present invention is to provide a metal plate mounting bracket.

In order to solve the above-described problems, in the present invention, the metal plate for mounting the corrugated plate is provided with the following configurations (1) to (5).
(1) A metal fitting used to attach a step plate to a side plate constituting a staircase,
(2) a vertical plate portion with one surface attached to the side plate;
(3) having a horizontal plate portion whose upper surface is an attachment fastening surface to the lower surface of the corrugated plate,
(4) The vertical plate portion and the horizontal plate portion are integrally connected so that a part of the horizontal plate portion protrudes laterally from an imaginary vertical line passing through the attachment fixing surface of the vertical plate portion. And
(5) A part of the lower surface of the horizontal plate portion is used as a hooking surface to the upper end surface of the side plate.

According to such a configuration,
(1) After hooking the hooking surface of the horizontal plate portion on the upper end surface of the side plate and attaching the attachment fixing surface of the vertical plate portion to the surface of the side plate, with the attachment fixing surface of this vertical plate portion By fixing the vertical plate portion to the side plate, a metal fitting can be attached to the side plate so that the step plate can be placed on the attachment fixing surface of the horizontal plate portion.
(2) Next, after arranging the step plate so that the lower surface of the step plate is attached to the attachment fixing surface of the horizontal plate portion of the metal fitting attached to the side plate in this way, By fixing the horizontal plate portion to the step plate with the attachment fixing surface, the step plate can be supported and fixed to the side plate via the metal fitting.
(3) The corrugated plate thus supported and fixed is such that the lower surface of the corrugated plate is brought into contact only with the attachment fixing surface of the lateral plate portion of the metal fitting, and is appropriately supported with a predetermined level.
(4) Since the metal fitting is installed in a state in which the hooking surface of the horizontal plate portion is hooked on the upper end surface of the side plate, the load applied to the step plate is entirely applied by the side plate through the metal fitting. Can be received. That is, in such a metal fitting, a part of such load does not act in the direction of separating the attachment fixing surface of the vertical plate portion of the metal fitting from the surface of the side plate, and the support state of the step board by the metal fitting is always Secured stably.
(5) Even if the side plate is made of a relatively fragile plywood, the step plate is not fixed directly to the upper end surface of such a side plate with a nail or the like, but the lateral plate portion is attached to the upper end surface of such a side plate. It is also suitable for these side plates because the step plate is fastened at the horizontal plate part of the metal fitting that has the hooking surface of the vertical plate part and the attachment fixing surface of the vertical plate part attached to the surface of the side plate. It is possible to fix the step board.

An insertion hole for a shaft-like fastening body such as a nail is formed in the lateral plate portion, and the lateral plate portion is fastened by a shaft-like fastening body driven through the insertion hole. ,
The size of the insertion hole may be larger than the thickness of the shaft portion of the shaft-like fixing body.

  In this case, even if the step plate is contracted after the step plate is attached, the contraction is caused by the margin of the insertion hole, that is, the insertion hole and the shaft portion of the shaft-like fixing body. Therefore, it is possible to reduce as much as possible the occurrence of cracks in the corrugated board due to such shrinkage. Further, even when the distance between the side plates that support the step plate changes due to an earthquake or the like, such a change can be absorbed by the dimensional difference between the insertion hole and the shaft portion of the shaft-shaped fastening body.

  Further, all or part of the upper surface of the horizontal plate portion may be covered with an impact absorbing material such as rubber.

  In this case, an impact applied to the step plate can be absorbed on the metal fitting side that supports and fixes the step plate.

  According to the metal fitting for mounting a corrugated plate according to the present invention, it can be easily attached to the side plate constituting the staircase in a state where the corrugated plate can be appropriately supported, and the supporting state of the corrugated plate is stably secured. can do.

  The best mode for carrying out the present invention will be described below with reference to FIGS.

  Here, FIGS. 1 and 2 show an example of the corrugated board mounting bracket K according to the present invention, FIG. 3, FIG. 4 and FIG. 5 show other examples, and FIG. 1 and 2 show examples in which the upper surface of the horizontal plate portion 4 of the metal fitting K shown in FIG.

  The metal plate K for mounting the step plate according to this embodiment is used for mounting the step plate D to the side plate S constituting the staircase.

  The metal fitting K has a vertical plate portion 1 and a horizontal plate portion 4. One surface of the vertical plate portion 1 is an attachment fixing surface 2 to the side plate S. Further, the upper surface of the horizontal plate portion 4 is an attachment fixing surface 5 to the lower surface Da of the step plate D.

  In the metal fitting K, the vertical plate portion 1 and the horizontal plate portion 4 are connected to the side of the horizontal plate portion 4 laterally from a virtual vertical line x passing through the attachment fastening surface 2 of the vertical plate portion 1. The lower surface of the part 4 ′ of the horizontal plate portion 4 is used as a hooking surface 5 ′ to the upper end surface Sb of the side plate S so as to project the part 4 ′.

As a result, in the metal fitting K,
(1) After hooking the hook surface 5 'of the horizontal plate portion 4 on the upper end surface Sb of the side plate S and attaching the attachment fastening surface 2 of the vertical plate portion 1 to the surface Sa of the side plate S, By attaching the vertical plate portion 1 to the side plate S with the attachment fixing surface 2 of the plate portion 1, the step plate D can be placed on the attachment fixing surface 5 of the horizontal plate portion 4. Further, the metal fitting K can be attached to the side plate S.
(2) Next, the corrugated board D is arranged so that the lower surface Da of the corrugated board D is attached to the attachment fastening surface 5 of the lateral plate portion 4 of the metal fitting K attached to the side plate S in this way. Thereafter, the horizontal plate portion 4 is fixed to the step plate D with the attachment fixing surface 5 of the horizontal plate portion 4, whereby the step plate D can be supported and fixed to the side plate S via the metal fitting K. .
(3) The corrugated plate D supported and fixed in this manner is such that the lower surface Da of the corrugated plate D is brought into contact with only the attachment fastening surface 5 of the lateral plate portion 4 of the metal fitting K, and is appropriately provided with a predetermined level. Supported by
(4) Further, since the metal fitting K is installed in a state in which the hooking surface 5 ′ of the horizontal plate portion 4 is hooked on the upper end surface Sb of the side plate S, a load acting on the step plate D is applied. The entire surface is received by the side plate S through the metal fitting K. That is, in the metal fitting K, a part of such a load does not act in the direction of separating the attachment fastening surface 2 of the vertical plate portion 1 and the surface Sa of the side plate S in the metal fitting K, The support state of the corrugated board D is always stably ensured.

  In the example shown in FIG. 1 and FIG. 2, the angle member 7 obtained by bending an elongated metal plate-like body at an approximately middle position in the length direction by approximately 90 degrees. One side 9 across the bending position 8 functions as the vertical plate portion 1. That is, in this example, the outer surface of one side 9 of the angle member 7 (the surface positioned on the bent outer side) is the attachment fixing surface 2 of the vertical plate portion 1.

  Further, in this example, a metal layer is laminated by welding or the like with the lower surface attached to the outer surface of the other side 10 (the surface positioned on the outer side of the bend) across the bending position 8 of the angle member 7. A plate member 11 is fixed, and the lateral plate portion 4 is formed by the other side 10 of the angle member 7 and the overlapping plate member 11. That is, in this example, the upper surface of the laminated plate material 11 is made to be the attachment fixing surface 5 of the horizontal plate portion 4.

  In this example, the stacked plate member 11 has the length in the left-right direction of the staircase, that is, the length direction Db of the step plate D, the length of the other side 10 across the bending position 8 of the angle member 7, that is, The angle member 7 is configured to be longer than the length from the bent position 8 to the end of the other side 10, and one end of the stacked plate material 11 is protruded laterally from the bent position 8, and The other end of the laminated plate 11 is fixed to the other side 10 of the angle member 7 so as to protrude sideways from the end of the other side 10 across the bending position 8 of the angle member 7. In other words, in this example, one end portion of the stacked plate member 11 protruding laterally from the bent position 8 is lateral to the virtual vertical line x passing through the attachment fastening surface 2 of the vertical plate portion 1. It becomes part 4 'of the horizontal plate part 4 protruded by.

  The metal fitting K can also be configured as shown in FIGS. In the example shown in FIGS. 3 and 4, the metal fitting K is configured by bending the three elongated metal plates in three places. That is, in this metal fitting K, it has the horizontal part 12 used as the said horizontal board part 4, and the vertical part 15 used as the said vertical board part 1, and this vertical part 15 and the horizontal part 12 are made into a vertical part. The upper and lower portions 15 are connected to each other by an inclined portion 16 which is inclined in a direction away from the surface of the vertical portion 15 as it goes upward. The upper end of the inclined portion 16 is bent at one end 13 (the end located on the center side of the staircase) of the horizontal portion 12 and connected to a plate portion that is folded horizontally toward the other end 14 side of the horizontal portion 12. ing. The other end 14 of the horizontal portion 12 protrudes laterally from a surface in contact with the surface Sa of the side plate S in the vertical portion 15, that is, an imaginary vertical line x passing through the attachment fixing surface 2 of the vertical plate portion 1. The lower surface of the other end 14 portion of the horizontal portion 12 thus projected functions as the hooking surface 5 ′.

  The metal fitting K can also be configured as shown in FIG. In the example shown in FIG. 5, the metal fitting K is configured by bending the two elongated metal plates in two places. That is, the metal fitting K has a horizontal portion 17 that becomes the horizontal plate portion 4 and a vertical portion 18 that becomes the vertical plate portion 1, and the vertical portion 18 and the horizontal portion 17 are connected to the horizontal portion. The upper end of the vertical portion 18 is connected to the plate portion bent at the other end 19 of the plate 17 and horizontally folded toward the one end 20 side of the horizontal portion 17. The other end 19 of the horizontal portion 17 protrudes laterally from a surface in contact with the surface Sa of the side plate S in the vertical portion 18, that is, an imaginary vertical line x passing through the attachment fixing surface 2 of the vertical plate portion 1. The lower surface of the other end 19 of the horizontal portion 17 protruding in this manner functions as the hooking surface 5 ′.

  Further, in the metal fittings K according to the respective examples, the insertion hole 6 of the shaft-like fastening body N such as a nail is formed in the horizontal plate portion 4, and the shaft driven through the insertion hole 6. The horizontal plate portion 4 is fixed to the step plate D by the shaped fastening body N, and the size of the insertion hole 6 is larger than the thickness of the shaft portion Na of the shaft shaped fastening body N. It is like that.

  Specifically, in each of these examples, the insertion hole 6 having a round hole shape is formed in the horizontal plate portion 4 in a through state, and the step plate D is formed from below through the insertion hole 6. The horizontal plate portion 4 is fixed to the step plate D by driving a wood screw N ′. At the same time, the hole diameter of the insertion hole 6 is made larger than the outer diameter of the shaft portion Na of the wood screw N ′.

  Thereby, according to the metal fitting K concerning each example, even if the shrinkage or the like occurs in the step board D after the attachment of the step board D (the shrinkage or the like becomes more remarkable as the step board D becomes larger). In particular, it becomes remarkable in the step plate D constituting the landing of the staircase.) This contraction is caused by the margin of the insertion hole 6, that is, the dimensional difference between the insertion hole 6 and the shaft portion Na of the shaft-like fixing body N. Therefore, it is possible to reduce as much as possible the occurrence of cracks or the like in the corrugated board D due to such shrinkage.

  The insertion hole 6 may have a long hole shape. However, as shown in the drawing, the insertion hole 6 has a hole that is wider than the thickness of the shaft portion Na of the shaft-like fixing body N over the entire circumference. If the so-called loose hole is made larger, the shrinkage of the corrugated board D can be absorbed appropriately in any direction.

  In the example shown in FIG. 1 and FIG. 2, the insertion hole 6 includes the other side 10 sandwiching the bending position 8 of the angle member 7 constituting the horizontal plate portion 4, and the overlapped plate material superimposed on the other side 10. 11 is formed so as to penetrate both.

  Further, in the example shown in FIG. 3, the insertion hole 6 is formed between two upper and lower horizontal portions between the one end 13 of the horizontal portion 12 and the upper end of the inclined portion 16 constituting the horizontal plate portion 4. 12 is formed so as to penetrate through the plate portion constituting 12. Further, in the example shown in FIG. 4, the insertion hole 6 has two upper and lower horizontal portions between the one end 13 of the horizontal portion 12 and the upper end of the inclined portion 16 constituting the horizontal plate portion 4. 12, and the plate portion between the other end 14 of the horizontal portion 12 and the upper end of the inclined portion 16 are formed so as to penetrate each. In the example shown in FIG. 4, the inclined portion 16 is further axially formed at a position immediately below the insertion hole 6 formed in the plate portion between the other end 14 of the horizontal portion 12 and the upper end of the inclined portion 16. An insertion hole 6 ′ for a tool such as a driver for operating the fastening body N is formed in a penetrating state.

  Further, in the example shown in FIG. 5, the insertion hole 6 passes through the horizontal portion 17 between the one end 20 of the horizontal portion 17 and the upper end of the vertical portion 18 constituting the horizontal plate portion 4. It is formed as follows.

  In each of these examples, the wood screw N ′ is driven by inserting a spring washer W between the head Nb of the wood screw N ′ and the lower surface of the horizontal plate portion 4. It is difficult to cause loosening over time.

  Further, in each of these examples, the insertion hole 3 of the wood screw N ′ is also formed in the vertical plate portion 1 in a penetrating state, and this wood screw N ′ driven into the side plate S through this insertion hole 3 The vertical plate portion 1 is fixed to the side plate S. The insertion hole 3 formed in the vertical plate portion 1 also has a larger hole size than the thickness of the shaft portion Na of the shaft-like fastening body N such as a nail or wood screw N ′ driven through the insertion hole 3. You may comprise as follows.

  Moreover, in the example shown by FIG. 1 and FIG. 2, the width | variety of the step board D of this horizontal plate part 4 of places other than the connection location of this horizontal plate part 4 and the vertical plate part 1 in the horizontal plate part 4 is shown. The plate width along the direction Dc is set to be wider than the plate width of the connecting portion in all or a part of the portions other than the connecting portion. (Figure 2)

  Specifically, in the example shown in FIG. 1 and FIG. 2, the width of the angle member 7 is constant, whereas the stacked plate member 11 constituting the horizontal plate portion 4 is The edge (the edge directed to the nose side of the step board D / the lower edge in FIG. 2) is aligned with the front edge of the other side 10 across the bending position 8 of the angle member 7, but the rear edge (see FIG. 2 is inclined so as to gradually protrude rearward as the angle member 7 is separated from the bending position 8 of the angle member 7, so that the plate width along the width direction Dc of the step plate D of the horizontal plate portion 4 is increased. In all of the locations other than the connection locations, the plate width of the connection locations is wider.

  In such a case, an area in which a plurality of the insertion holes 6 can be formed in the horizontal plate portion 4 of the metal fitting K without unnecessarily increasing the width of the vertical plate portion 1 of the metal fitting K fixed to the side plate S. Can be secured. In particular, since the width of the step plate D becomes narrower inside the surrounding staircase, there is a limit in increasing the width of the vertical plate portion 1 fixed to the side plate S. If it is made like the example shown by FIG. 2, without extending the width | variety of the vertical plate part 1 of the metal fitting K, it can be made to form many said insertion holes 6 in the horizontal plate part 4, Even when the plate D is formed of a plywood or the like that is difficult to firmly drive the shaft-like fastening body N such as a wood screw N ′, the horizontal plate portion 4 can appropriately support and fix the step plate D. it can.

  As shown in FIG. 6, all or part of the upper surface of the horizontal plate portion 4 may be covered with a shock absorbing material 21 such as rubber.

  In the example shown in FIG. 6, the entire upper surface of the horizontal plate portion 4 is covered with a sheet-like shock absorber 21, and the insertion hole 6 includes the shock absorber 21 and includes the horizontal plate portion. 4 is provided in a penetrating state.

  In this case, an impact applied to the step plate D can be absorbed on the metal fitting K side that supports and fixes the step plate D.

  The metal fittings K described above are typically attached to the left and right side plates S, S constituting the staircase, respectively, and a single step board D is supported and fixed by the pair of metal fittings K, K attached in this way. Is done.

Cross-sectional configuration diagram of corrugated board mounting bracket K (viewed from the front) AA cross-sectional configuration diagram in FIG. Cross-sectional configuration diagram showing another example of the bracket K (as viewed from the front) Cross-sectional configuration diagram showing an example in which a part of the configuration of the metal fitting K shown in FIG. 3 is changed (as viewed from the front) Cross-sectional configuration diagram showing still another example of the bracket K (as viewed from the front) Cross-sectional configuration diagram showing still another example of the bracket K (as viewed from the front)

Explanation of symbols

S side plate Sb upper end surface D step plate Da lower surface x vertical line K metal fitting 1 vertical plate portion 2 attachment fastening surface 4 horizontal plate portion 4 'part 5 attachment fastening surface 5' hooking surface

Claims (3)

A metal plate used to attach a step plate to a side plate constituting a staircase, and a vertical plate portion having one surface attached to a side plate,
And having a horizontal plate portion with an upper surface attached to the lower surface of the corrugated plate,
The vertical plate portion and the horizontal plate portion are integrally connected so that a part of the horizontal plate portion protrudes laterally from a virtual vertical line passing through the attachment fastening surface of the vertical plate portion,
A corrugated board mounting bracket characterized in that a part of the lower surface of the horizontal plate portion is used as a hooking surface to the upper end surface of the side plate. An insertion hole of a shaft-like fastening body such as a nail is formed in the horizontal plate portion, and the horizontal plate portion is fastened by a shaft-like fastening body driven through this insertion hole,
2. The corrugated board mounting bracket according to claim 1, wherein the size of the insertion hole is larger than the thickness of the shaft portion of the shaft-like fastening body.   The corrugated board mounting bracket according to claim 1 or 2, wherein all or part of the upper surface of the horizontal plate portion is covered with an impact absorbing material such as rubber.

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