JP5161591B2 - Support bracket - Google Patents

Description

  For example, the present invention relates to a support fitting for attaching a handrail or the like to a wall.

  For example, a support fitting for attaching a handrail or the like to the side wall surface of a staircase is connected to a mounting portion for mounting on a wall with a support portion that is supported and fixed to the handrail by a tightening screw. In this configuration, the angle of the support surface of the support portion is adjusted, for example, according to an inclination angle, and then tightened and fixed by a tightening screw.

  As the structure of the connection part of such a support metal (tightening and fixing structure between the attachment part and the support part), there are the following L-shaped connection part and concave connection part, and any support metal parts are commercially available. It is known.

  First, the L-shaped connecting portion will be described with reference to FIG.

  The support metal fitting made into this L-shaped connection part protrudes in the support part 2 for receiving a handrail, and the protrusion part 3A for connecting this support part 2 to the attachment part 1 is protruded, and the front-end | tip part of this attachment part 1 Is formed with an L-shaped portion 4A for stopping the polymerization so that one end of the protruding portion protrudes so as to have a mounting surface 16 on which the protruding portion 3A is placed and a polymerization standing surface 17 on which the protruding portion is arranged along the polymerization. The configuration is as follows.

  Further, the protrusion 3A is provided with a protrusion through hole 10 for allowing the tightening screw 5 to pass therethrough, and the tightening screw 5 is screwed to the wall 12A having the overlapping standing surface 17 of the L-shaped portion 4A. The projection 3A is placed on the L-shaped portion 4A, the fastening screw 5 is inserted from the projection 3A side, and the support portion 2 is attached as necessary. The support portion 2 is fixed to the L-shaped portion 4 </ b> A at the distal end portion of the mounting portion 1 by appropriately adjusting the angle with respect to the mounting portion 1 and screwing and tightening the fastening screw 5.

  Further, at the time of fastening, the fastening screw head 6 of the fastening screw 5 is provided along the overlapping standing surface 17 of the L-shaped portion 4A and directly presses the projection 3A, thereby supporting the support. The portion 2 and the mounting portion 1 can be securely fastened and fixed.

  Therefore, the support metal fitting having the L-shaped connection portion is not loose and does not easily loosen because the tightening screw head 6 directly presses the projection 3A. However, when an excessive load is applied, the support metal fitting is tightened. The screw 5 may be deformed. For this reason, the L-shaped connecting portion cannot be said to have sufficient load pressure resistance and can be tightened and fixed without loosening, but it can be said to have a weak strength.

  However, since handrails support weight and it is assumed that an excessive load is sometimes applied, there is a strong demand for a connection portion having a higher load pressure resistance and a structure that is not easily deformed.

  On the other hand, the support metal fitting made into the concave connection portion is a connection portion having a high load pressure resistance and a structure that is difficult to deform. This will be described with reference to FIG.

  The support fitting as the concave connection portion is formed by integrally forming the concave portion 4B by forming the tip of the mounting portion 1 into a bifurcated portion, and mounting the interposition mounting portion 3B (corresponding to the protruding portion 3A) interposed in the concave portion 4B. Projected to part 1. The insertion side through hole 21 is provided in one of the opposing wall portions 12B of the recess 4B, the screw hole 9 is provided in the other, and the intermediate attachment portion through hole 10 (projection portion through hole 10) is also provided in the intermediate attachment portion 3B. In the state where the interposition mounting portion 3B is interposed in the recess 4B, the fastening screw 5 is inserted from the insertion side through hole 21, and the tip end portion of the mounting screw 5 passing through the interposition mounting portion through hole 10 is When screwed into the screw hole 9 and fastened, the tightening screw head 6 of the tightening screw 5 presses one of the opposing wall portions 12B of the concave portion 4B from the outside, so that the opposing wall portion 12B is interposed therebetween. This is a configuration in which the interposed mounting portion 3B of the support portion 2 and the mounting portion 1 are fastened and fixed.

  That is, in this concave connection portion, unlike the L-type connection portion, the interposition mounting portion 3B of the mounting portion 1 is interposed in the concave portion 4B, so the interposition mounting portion 3B is supported from both sides by the opposing wall surface 12B. Even if a force is applied to any side of the mounting portion 3B, the opposing wall portion 12B supports the interposing mounting portion 3B to be inclined, and at the same time, a recess 4B is provided to the fastening screw 5 to be bent. Since it is supported by the insertion side through hole 21 and the screw hole 9, neither the interposing attachment portion 3B nor the fastening screw 5 is deformed, so that it becomes a support metal fitting that is highly resistant to load pressure and hardly deformed.

  However, on the contrary, the concave connection portion clamps the interposition mounting portion 3B interposed between the opposing wall portions 12B of the concave portion 4B by the fastening screw 5 from the outside of the one opposing wall portion 12B, and this opposing wall portion 12B. The interposing attachment portion 3B is fixed between the opposing wall portions 12B of the recess 4B by tightening by bending. That is, in order to tighten and fix, it is necessary to bend the opposing wall part 12B of the said recessed part 4B.

  However, the opposing wall portion 12B of the concave portion 4B is designed to have a thickness that can support the interposition mounting portion 3B that is to be bent at the time of load, and it is not easy to bend the concave portion 4B. It is difficult to fix, and rattling and loosening are likely to occur even when tightened.

  Further, since the opposing wall portion 12B of the recess 4B is bent and tilted to press and fix the interposition mounting portion 3B, the contact surface of the recess 4B and the interposition mounting portion 3B cannot be said to be parallel, and the recess 4B In the opposite wall portion 12, the pressure is concentrated on the upper portion, and play is likely to occur in the lower portion. Therefore, also in this respect, the concave connection portion has a connection structure in which rattling and loosening are likely to occur compared to the L-shaped connection portion.

In view of the above-described problems, the present invention has a mounting portion distal end as a recess, and a through hole having a diameter through which the tightening screw head can pass is provided in one of the opposing wall portions of the recess (insertion side through hole). By interposing the interposition mounting portion in the recess, the interposition mounting portion can be pressed directly with a tightening screw, so that it can be securely tightened and fixed, and rattling and loosening do not occur. The diameter of the insertion-side through hole is set to a diameter that allows the tightening screw head to pass through and matches the tightening screw head, and the tightening screw head peripheral surface abuts the insertion-side through hole inner peripheral surface. Alternatively, an object of the present invention is to provide an epoch-making support metal fitting which is configured to be close to each other and has high load pressure resistance and hardly deforms.

  The gist of the present invention will be described with reference to the accompanying drawings.

A support fitting in which a support portion 2 is fastened and fixed to a front end portion of an attachment portion 1 attached to an attachment surface such as a wall surface or a floor surface by a fastening screw 5, and an interposition attachment portion 3 is projected from the support portion 2. A concave portion 4 in which the interposing mounting portion 3 is interposed is provided at the tip of the mounting portion 1 so that the tightening screw head 6 of the tightening screw 5 can penetrate one of the opposing wall portions 12 of the concave portion 4. The set insertion side through hole 7 is provided, the other is provided with a through hole 8 or a screw hole 9, and the intermediate mounting portion 3 is also provided with an intermediate mounting portion through hole 10, and the intermediate mounting portion 3 is interposed in the recess 4. In this state, the fastening screw 5 is inserted from the insertion-side through hole 7, and the tip end portion of the mounting screw 5 passing through the interposition mounting portion through hole 10 is screwed into the screw hole 9 at the other end. Alternatively, a nut 11 is attached to the tip of the fastening screw 5 that protrudes outward through the through hole 8 at the other end. Screwed, said by the fastening screw head 6 presses the contact with one side surface of the intermediate mounting portion 3 on one side of the intermediate mounting portion 3 directly without passing through the one of the opposing walls 12 the The mounting portion 1 and the support portion 2 are fastened and fixed by the fastening screw 5, and all or part of the fastening screw head 6 is located in the insertion side through-hole 7 during the fastening and fixing. In addition, the present invention relates to a support fitting characterized in that the circumferential surface of the tightening screw head 6 abuts on or is close to the inner circumferential surface of the insertion side through hole 7.

  Further, the insertion side through hole 7 set to an inner diameter that matches the outer diameter of the tightening screw head 6 is provided in one of the opposing wall portions 12 of the concave portion 4, and the distal end portion of the tightening screw 5 is provided in the other. 2. The support fitting according to claim 1, wherein a screw hole is provided for screwing.

  The insertion-side through-hole 7 is set to a through-hole having an inner diameter that matches the outer diameter of the tightening screw head 6 and having the same outer shape and hole shape as the tightening screw head 6. The whole or part of the circumferential surface in the thickness direction of the tightening screw head 6 is configured to be in contact with or close to the inner circumferential surface of the insertion through hole 7 over the entire circumference in the circumferential direction. The support metal fitting according to any one of claims 1 and 2.

  The interposition mounting portion 3 is configured to be tiltable by loosening the tightening by the tightening screw 5 and to adjust the orientation of the support surface of the support portion 2. This relates to the support fitting described in item 1.

  Further, the thickness of one wall portion in which the insertion-side through hole 7 is provided in the opposing wall portion 12 of the recess 4 is such that the length in the hole direction of the insertion-side through hole 7 provided in the one wall portion is the tightening width. The support metal fitting according to any one of claims 1 to 4, wherein the thickness is set to be approximately equal to or higher than the height of the attached screw head 6.

  Further, the concave portion 4 is formed by bifurcating the tip of the mounting portion 1, and the right and left wall portions of the concave portion 4 provided with the insertion side through hole 7 and the through hole 8 or the screw hole 9 are attached to the mounting portion 1. The support metal fitting according to any one of claims 1 to 5, wherein the support metal fitting is formed integrally with a distal end portion of the portion 1.

As described above, according to the present invention, the front end of the mounting portion is a recess, and a through-hole having a diameter through which the tightening screw head can pass is provided in one of the opposing wall portions of the recess (insertion-side through-hole). By adopting a configuration in which this interposed mounting part can be directly pressed with a tightening screw while being interposed in the concave part, it can be firmly tightened and fixed, and rattling and loosening are less likely to occur, and the intermediate mounting part is interposed in the concave part and inserted. The diameter of the side through hole is such that the tightening screw head can penetrate and matches the tightening screw head, and the tightening screw head peripheral surface is in contact with or close to the inner peripheral surface of the insertion side through hole. By comprising, it becomes an epoch-making support metal fitting which has high load pressure resistance and is difficult to deform.

  Further, in the invention according to claim 2, since the insertion side through hole is provided in one of the opposing wall portions and the screw hole is provided in the other, when the fastening screw is engaged with a nut disposed outside the through hole, In comparison, since a nut that rotates and loosens easily when subjected to vibration is used, it becomes a support metal fitting that is more difficult to loosen.

  According to a third aspect of the present invention, the hole shape of the screw hole is the same as the outer shape of the tightening screw head, and the peripheral surface of the tightening screw head is the inner peripheral surface of the insertion through-hole when fastened. Since it is configured to contact or be close to each other in the circumferential direction, it has high load pressure resistance against forces from all directions, and only a part of the side surface of the tightening screw head receives a load. This can prevent the partial deterioration and further support the load in a wider area, so that the support metal fitting with higher load pressure resistance can be obtained.

  In the invention according to claim 4, since it can be tilted only by loosening the tightening of the tightening screw, the support metal fitting can be further easily adjusted in angle.

  Further, in the invention according to claim 5, since the length in the hole direction of the insertion side through hole is set to a thickness that is equal to or greater than the height of the tightening screw head, Compared to the case where only a part is covered by the insertion-side through hole, it is possible to support the head of the tightening screw in a wider area, disperse the load, prevent deformation of the tightening screw, and further withstand load pressure. High support bracket.

  In the invention described in claim 6, since the concave portion is integrally formed with the mounting portion, it can be easily produced and can be produced at a low cost, and the concave portion is hard to break and becomes a support metal with higher load pressure resistance.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  In the present invention, there are two types, for example, Example 1 and Example 2 which will be described later. For example, as in Example 1, the diameter of the fastening screw head 6 can pass through one of the opposing wall portions 12 of the recess 4. An insertion side through-hole 7 as a hole is provided, and a screw hole 9 into which the tip of the fastening screw 5 is screwed is provided in the other opposing wall 12, and the fastening screw 5 is inserted into the one opposing wall 12. The tightening screw head 6 of the tightening screw 5 is interposed in the recess 4 by being inserted from the side through hole 7 and screwed into the screw hole 9 through the intervening mounting portion through hole 10 of the intervening mounting portion 3. The intervening mounting portion 3 can be clamped and fixed between the opposing wall portions 12 of the recess 4 by pressing the intervening mounting portion 3 without the opposing wall portion 12 interposed therebetween.

  That is, the tightening screw head 6 is inserted into the insertion side through-hole 7 provided in the opposing wall portion 12 without using the opposing wall portion 12 and presses one side surface of the intermediate mounting portion 3 so as to press the intermediate mounting portion. 3 is pressed and fixed by the fastening screw head 6 and the opposing wall portion 12 on the side facing the other side surface of the interposition mounting portion 3.

  Accordingly, the fastening screw 5 is interposed between the recessed part 4 provided at the tip of the attaching part 1 and is fastened and fixed by the fastening screw 5. Instead of pressing one of the opposing wall portions 12 from the outside, it enters the insertion-side through hole 7 provided in the opposing wall portion 12 and the fastening screw 5 is inserted into the insertion-side through hole 7. One side of the interposition mounting portion 3 between 12 is pressed, and the interposition mounting portion 3 is fastened and fixed by the inner surface of the other opposing wall portion 12 and the tightening screw head 6 of the tightening screw 5.

  Accordingly, since the interposing mounting portion 3 can be pressed and tightened by the tightening screw head 6 of the tightening screw 5 without the facing wall portion 12 being interposed, the facing wall portion 12 is flexed similarly to the L-shaped connecting portion. It is possible to securely fasten and fix with a small force, and the surface on the front side of the tightening screw 5 of the interposition mounting portion 3 and one surface of the opposing wall portion 12 in contact with the surface are substantially parallel. Moreover, it can be pressed so that the pressure is applied substantially evenly, and can be fastened and fixed without causing play, so that the connection structure is not loose and difficult to loosen.

  Furthermore, in the present invention, unlike the conventional L-shaped connecting portion, a concave portion 4 is provided at the tip of the mounting portion 1 unlike the conventional L-shaped connecting portion, and between the opposing wall portions 12 of the concave portion 4. It is set as the structure which interposes the installation attachment part 3 in this. Therefore, even if the interposition mounting portion 3 receives a load and tries to incline to any of the opposing wall portions 12, the interposition mounting portion 3 is difficult to incline because the opposing wall portion 12 supports, and the L-shaped connection portion in the conventional example Compared to the above, it becomes a connection portion having high load pressure resistance.

  In addition, in the present invention, the diameter of the insertion-side through hole 7 is not limited to a diameter that allows the tightening screw head 6 to pass therethrough, and is set to a diameter that matches, and when tightening, the tightening screw head 6 of the tightening screw 5 is used. Is located in the insertion-side through hole 7 and the circumferential surface of the tightening screw head 6 is in contact with or close to the inner circumferential surface of the insertion-side through hole 7, so that a load is applied to the tightening screw 5 and the tightening screw 5. Even when it is going to bend, since the insertion side through-hole 7 surrounds the tightening screw 5 in the close state, the tightening screw 5 is extremely difficult to deform and becomes a support metal fitting with high load pressure resistance.

That is, according to the present invention, the tip of the mounting portion 1 is a recess 4, and a through-hole through which the tightening screw head 6 can pass is provided in one of the opposing wall portions 12 of the recess 4 (insertion-side through-hole 7). By adopting a structure in which the head 6 can press the interposer mounting portion 3 without going through the opposing wall portion 12, the support portion 2 can be firmly tightened and fixed to the mounting portion 1, and rattling and loosening are unlikely to occur. The interposition mounting portion 3 of the portion 2 is interposed in the recess 4 of the mounting portion 1, and the insertion side through hole 7 is formed as a through hole having a diameter matching the tightening screw head 6, and the tightening screw 5 is tightened when tightening is fixed. The screw head 6 is positioned in the insertion side through hole 7 and the insertion side through hole 7 is set so that the peripheral surface of the tightening screw head 6 is in contact with or close to the inner peripheral surface of the insertion side through hole 7. Therefore, it becomes a support metal fitting that is highly resistant to load pressure and hardly deforms, comparable to the case where a concave connection portion is used.

  A specific embodiment 1 of the present invention will be described with reference to FIGS.

  The first embodiment is a support fitting in which a support portion 2 for supporting a handrail is fastened and fixed to a mounting portion 1 for attaching a handrail to an attachment surface such as a wall surface or a floor surface by a fastening screw 5. In the present embodiment, as shown in FIG. 2, the present invention is applied to a support fitting that supports the handrail 18 of the stairs 20, but the present invention is not limited to this.

  Specifically, as shown in FIGS. 3 and 4, the base portion of the mounting portion 1 is provided with a base portion 13 for fixing to a wall 19 as a mounting surface via a base portion fixing screw 14. It is provided via a set screw 15.

  Further, a support portion 2 for supporting the handrail 18 is provided at the front end portion of the attachment portion 1 so as to be fastened and fixed. In other words, an interposition attachment portion 3 is provided to protrude from the support portion 2. A recessed portion 4 in which the interposed mounting portion 3 is interposed is provided at the tip of the mounting portion 1, and the diameter is set to one of the opposing wall portions 12 of the recessed portion 4 to match the tightening screw head 6 of the tightening screw 5. The insertion side through hole 7 is provided, the screw hole 9 is provided on the other side, the interposition attachment portion 3 is also provided with the interposition attachment portion through hole 10, and the insertion portion 3 is inserted in the recess 4. The fastening screw 5 is inserted from the side through hole 7, and the tip of the mounting screw 5 that has passed through the interposition mounting part through hole 10 is screwed into the screw hole 9 at the other end. 6 presses the side surface of the interposition mounting portion 3 to fix the mounting portion 1 and the support portion 2 with the tightening screw 5. At the same time, the fastening screw head 6 is entirely located in the insertion side through hole 7 and the fastening screw head 6 circumferential surface is close to the insertion side through hole 7 inner circumferential surface. To be configured.

  This will be described in detail below.

  First, each part of the recessed part 4, the interposition attachment part 3, and the fastening screw 5 which comprise a connection part is demonstrated.

  The concave portion 4 forms an opposing wall portion 12 by bifurcating the tip of the mounting portion 1 and has an insertion side through-hole 7 set to a diameter matching the fastening screw head 6 of the fastening screw 5 on one side. And a screw hole 9 into which the fastening screw 5 is screwed, and the left and right wall portions of the recess 4 are formed integrally with the tip of the mounting portion 1.

  That is, in the first embodiment, when the concave portion 4 is integrally formed with the mounting portion 1, it receives vibration as compared with a joint portion having a structure in which a fastening screw 5 described later as a second embodiment is screwed into the nut 11. Since the nut that rotates and is easy to loosen is not used, the fastening screw 5 is extremely difficult to loosen.

  Moreover, it is necessary to design the wall thickness of the opposing wall part 12 of the recessed part 4 to the thickness which can respond to the assumed pressure at the time of use, considering an application and a raw material.

  Of the wall thicknesses of the opposing wall portion 12 of the recess 4, the thickness of the insertion-side through-hole 7 is tightened by the length of the insertion-side through-hole 7 provided in the side wall of the insertion-side through-hole 7. The thickness is approximately the same as or higher than the height of the screw head 6.

  That is, even when a large load is applied from the outside when the support bracket is used, the force applied to the tightening screw head 6 is supported by a wider area of the inner wall of the recess 4, so that the tightening screw 5 is not easily broken and is further resistant to load. It becomes a support metal with high pressure.

  More specifically, in the first embodiment, the length in the hole direction of the insertion-side through hole 7 provided in the one wall portion is approximately the same as the height of the tightening screw head 6.

  Therefore, the tightening screw head 6 does not protrude greatly from the insertion-side through hole 7, and the support metal fitting is free from the concern that hands and clothes will be caught during use. Further, this thickness is a thickness that can sufficiently withstand a load during use.

  The thickness of the other opposing wall portion 12 is set to a length that covers the screw hole 9.

  Next, regarding the diameter of the insertion side through hole 7 provided in the recess 4, the inner diameter of the insertion side through hole 7 is set to a diameter that matches the outer diameter of the tightening screw head 6 of the tightening screw 5.

  Moreover, the groove part of the recessed part 4 is formed so that the insertion attachment part 3 insertion direction cross section may become a circular arc convex downward.

  Next, the configuration of the interposition mounting portion 3 will be described.

  The interposition mounting portion 3 is made to pass through the interposition mounting portion through hole 10.

  Moreover, the outer periphery of the interposition mounting part 3 is formed in the downward convex arc shape.

  Next, the fastening screw 5 will be described.

  The fastening screw 5 preferably has a high fastening screw head 6.

  That is, in the present invention, as described above, the inner diameter of the insertion-side through hole 7 is set to a diameter that matches the outer diameter of the tightening screw head 6 of the tightening screw 5. If the height of the insertion side through hole 7 is high, the contact area between the inner peripheral surface of the insertion side through hole 7 and the peripheral surface of the tightening screw head 6 is widened, and the use of a support fitting is used. Even when a large load is sometimes applied from the outside, the force applied to the tightening screw head 6 can be supported by the wider surface of the inner wall of the recess 4, so that the tightening screw 5 becomes a support metal that is more difficult to break.

  Further, the fastening screw 5 can be configured such that the circumferential surface of the fastening screw head 6 abuts on or is close to the inner circumferential surface of the insertion-side through-hole 7 at the time of fastening. It is configured to be tightened with a tightening tool.

  That is, a concave tightening tool locking hole 22 that engages with the tightening tool is provided on the upper end surface of the tightening screw head 6, and the tightening screw is passed through the insertion side through hole 7 by tightening with the tightening tool. 5 is used for tightening and fixing.

  Specifically, in Example 1, a hexagon socket head cap screw is used as the tightening screw 5 and is tightened and fixed with a hexagon wrench.

  Next, the relationship between the three members, the interposition mounting part 3, the recessed part 4, and the fastening screw 5, will be described.

  The intervening mounting portion 3, the recessed portion 4 and the fastening screw 5 are related to each other by inserting the tightening screw 5 from the insertion side through hole 7 with the interposed mounting portion 3 interposed in the recessed portion 4. The penetrating mounting screw 5 is screwed into the screw hole 9 at the other end.

  In the first embodiment, specifically, with the interposed mounting portion 3 interposed in the recess 4, the fastening screw 5 is inserted from the insertion side through hole 7 on the wall 19 side as the mounting surface, and the interposed mounting portion passes therethrough. The fastening screw 5 penetrating the hole 10 is screwed into the screw hole 9 at the other end.

  In the first embodiment, the insertion side through hole 7 is provided on the wall 19 side as the mounting surface of the opposing wall portion 12 of the recess 4, but the insertion side through hole 7 is provided on the opposite side of the opposing wall portion 12. It is good also as a structure.

  Therefore, in the present invention, as shown in the embodiment, the support fitting configured to insert the fastening screw 5 from the wall 19 side of the two opposing wall portions 12 is also a support fitting configured to be inserted from the opposite side to the wall 19. Can also be configured.

  When the fastening screw 5 is inserted from the side of the wall 19 as in the first embodiment, the fastening screw head 6 and the insertion side through hole 7 are not visible when the support bracket is attached. If it is reversed, it is easy to adjust the angle of the support portion 2 and retighten it after loosening the tightening screw 5 after mounting.

  In addition, the interposition mounting portion 3 of the first embodiment can be tilted by loosening the tightening by the tightening screw 5, and the orientation of the support surface of the support portion 2 can be adjusted, so that angle adjustment and fine adjustment of the angle are easy. A configuration that can be used.

  Finally, the relationship between the two members of the intervening mounting portion 3, the recessed portion 4, and the fastening screw 5 will be further described.

  The relationship between the interposition mounting portion 3 and the tightening screw 5 is such that the base end surface of the tightening screw head 6 of the tightening screw 5 presses the side surface of the interposition mounting portion 3 without using the opposing wall portion 12. .

  Accordingly, it is not necessary to bend the opposing wall portion 12 and it is possible to securely fasten and fix it with a small force. Also, the surface of the interposing mounting portion 3 on the front side of the fastening screw 5 and the opposing wall portion in contact with the surface. Since it can be tightened and fixed without causing play between the one surface of the twelve surfaces, a connection structure that is extremely free from looseness and difficult to loosen.

  Moreover, the relationship between the interposition attaching part 3 and the recessed part 4 is set so that the intervening attaching part 3 is interposed in the recessed part 4.

  More specifically, since the opposing wall surface of the recess 4 receives the interposition mounting portion 3 from two directions, the interposition mounting portion 3 is very difficult to break.

  Furthermore, since the convex arc-shaped groove portion below the concave portion 4 is configured to coincide with the downward convex arc-shaped interposition mounting portion 3, the intermediate mounting portion is configured so that the intermediate mounting portion 3 contacts the groove portion of the concave portion 4. A configuration in which the concave portion 4 can receive the load applied to the portion 3 to the maximum and the interposition mounting portion 3 can be moved is made possible.

  The relationship between the recess 4 and the tightening screw 5 is important because the relationship between the insertion side through hole 7 provided in the opposing wall portion 12 of the recess 4 and the tightening screw head 6 of the tightening screw 5 is important. The point will be explained.

  An insertion side through hole 7 is provided in the opposing wall portion 12 of the recess 4, and the insertion side through hole 7 has an inner diameter that matches the outer diameter of the tightening screw head 6 and the outer shape and hole shape of the tightening screw head 6. Are through holes of the same shape.

  More specifically, for example, when the support bracket is used for the handrail 18, the direction of the force applied to the handrail 18 is not only the force from the upper side to the lower side as in normal use, but also with the use of leaning or pulling. It is assumed that force is applied in various directions, and there is an inner peripheral surface of the insertion through-hole 7 over the entire circumference in the circumferential direction no matter which direction the force is applied to the tightening screw 5 and tilted in any direction. Since the inner peripheral surface firmly supports the fastening screw head 6, the fastening screw 5 can be prevented from bending.

  In the present invention, the tightening screw head 6 is configured such that all or part of the circumferential surface in the thickness direction of the tightening screw head 6 is close to the inner circumferential surface of the insertion through-hole 7 over the entire circumference in the circumferential direction. The load pressure resistance is further increased.

  That is, if the insertion-side through-hole 7 is simply set to the through-hole 8 having the same inner shape as the outer diameter of the tightening screw head 6 and the outer shape of the tightening screw head 6 and the hole shape, When the hexagon bolt is used for the circular hole, the hole shape and the shape of the tightening screw head 6 do not coincide with each other, and the peripheral surface of the tightening screw head 6 is only partially included.

  However, as long as the peripheral surface of the tightening screw head 6 is in contact with the inner peripheral surface of the insertion through-hole 7 over the entire circumference in the circumferential direction, no matter what direction the load is applied, the insertion side is always supported in the load direction. The inner wall of the through-hole 7 exists, and the fastening screw 5 has high load pressure resistance against loads applied from all directions.

  Therefore, the support metal fitting is also extremely durable and highly practical.

  Moreover, since the location which receives the load of the fastening screw head 6 is not limited to a specific location, the fastening screw head 6 is not easily deteriorated. Further, with this configuration, the load can be received in a wider area. This makes it possible to distribute the load, and in these respects, the load pressure resistance is high.

  Further, the relationship between the circumferential surface of the tightening screw head 6 and the entire circumferential surface of the inner circumferential surface of the insertion through-hole 7 at the time of tightening and fixing is set to be close in the first embodiment. Still better. However, conversely, even if it is not close, if the tightening screw 5 starts to change its shape, the tightening screw head 6 peripheral surface only has to be in contact with the insertion peripheral through hole 7 inner peripheral surface. It can be said that the structure has pressure.

  Further, the thickness of one wall portion in which the insertion side through hole 7 is provided at the opposing wall portion 12 of the recess 4 is the length of the insertion side through hole 7 provided in the one wall portion in the hole direction. The thickness was set to be the same as or higher than the height of 6.

  Therefore, as described above, even when a large load is applied from the outside when the support bracket is used, the force applied to the fastening screw head 6 can be supported by a wider area of the inner wall of the recess 4 and the fastening screw 5 is not easily broken. Further, since the tightening screw head 6 does not jump out of the recess 4, it becomes a support metal fitting that does not cause a hand to be caught during use.

  It is desirable that the length of the insertion-side through hole 7 in the hole direction is at least half the height of the tightening screw head 6, but the tightening screw head 6 is hooked on the insertion-side through hole 7 even a little. Then, it becomes the structure which has load-proof pressure resistance.

  A second embodiment of the present invention will be described with reference to the drawings.

  The present embodiment is a second embodiment of the present invention, and is set to a diameter matching one of the opposing wall portions 12 of the recess 4 with the tightening screw head 6 of the tightening screw 5. In the state where the insertion side through-hole 7 that serves as a rotation stop is provided, the other side is provided with the through-hole 8, the interposition mounting portion 3 is also provided with the interposition mounting portion through hole 10, and the interposition mounting portion 3 is interposed in the recess 4. Then, the fastening screw 5 is inserted from the insertion side through hole 7 side, and the attachment screw 5 penetrating the interposing attachment part through hole 10 is passed through the through hole 8 at the other end to the tip of the fastening screw 5 protruding outward. The nut 11 is screwed together.

  More specifically, a hexagonal bolt is used for the tightening screw 5 and the shape of the interposition mounting portion through hole 10 is a hexagonal shape with a diameter matching the head of the hexagonal bolt. It was made a rotation stop to prevent 11 from rotating.

  The same fastening and fixing effect can be obtained regardless of which of the opposing wall portions 12 of the recess 4 is the insertion side through hole 7.

  The remainder is the same as that of the first embodiment.

  The present invention is not limited to the first and second embodiments, and the specific configuration of each component can be designed as appropriate.

A conventional example is shown, in which (a) is an explanatory cross-sectional view of a main part of a support metal fitting having an L-shaped connection portion, and (b) is an explanatory cross-sectional view of a main part of the support metal fitting having a concave connection portion. FIG. 6 is an explanatory view showing an example of use of the support metal fitting of Example 1. 1 is an explanatory exploded perspective view of Example 1. FIG. 2 is an explanatory cross-sectional view of Example 1. FIG. 10 is an explanatory perspective view of a main part of Example 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Attachment part 2 Support part 3 Interposition attachment part 4 Recessed part 5 Tightening screw 6 Tightening screw head 7 Insertion side through-hole 8 Through-hole 9 Screw hole
10 Intermediary mounting part through hole
11 Nut
12 Opposite wall

Claims (6)

A support fitting in which a support portion is fastened and fixed to a front end portion of a mounting portion to be attached to a mounting surface such as a wall surface or a floor surface by a fastening screw, and an interposition mounting portion is projected from the support portion. Is provided at the tip of the mounting portion, and an insertion-side through hole set to a diameter through which the head of the fastening screw can penetrate is provided in one of the opposing wall portions of the concave portion, and the other through-hole is provided. In addition to providing a hole or screw hole, the intermediate mounting portion is also provided with an intermediate mounting portion through hole, and the clamping screw is inserted from the insertion side through hole in a state where the intermediate mounting portion is interposed in the recess, The tip of the mounting screw that has passed through the through-hole through the intermediate mounting portion is screwed into the screw hole at the other end, or further, the tip of the fastening screw that protrudes outward through the through-hole at the other end. screwed nut, screw head the tightening is going through the opposing wall portion of the one In contact with one side directly the intervening attachment portion is fixed tightening by the screw tightening and the support portion and the mounting portion by pressing the one side surface of the intermediate mounting portion, during the tightening fixing All or part of the tightening screw head is located in the insertion-side through hole, and the tightening screw head circumferential surface is configured to contact or be close to the insertion-side through hole inner circumferential surface. Support metal fittings characterized by   One of the opposing wall portions of the recess is provided with the insertion-side through-hole set to an inner diameter that matches the outer diameter of the tightening screw head, and the other is provided with a screw hole into which the tip of the tightening screw is screwed. The support metal fitting according to claim 1 provided.   The insertion-side through-hole is set to a through-hole having an inner diameter that matches the outer diameter of the tightening screw head and has the same outer shape and hole shape as the tightening screw head. The whole or a part of the peripheral surface in the thickness direction of the attached screw head is configured so as to abut on or close to the inner peripheral surface of the insertion through hole over the entire peripheral direction. The support metal fitting of Claim 1.   The interposition mounting portion is configured to be tiltable by loosening the tightening by the tightening screw and to be capable of adjusting the orientation of the support surface of the support portion. Support bracket.   The thickness of one wall portion in which the insertion-side through hole is provided at the opposing wall portion of the recess is such that the length in the hole direction of the insertion-side through hole provided in the one wall portion is higher than the height of the fastening screw head. The support metal fitting according to any one of claims 1 to 4, wherein the thickness of the support metal fitting is set to be equal to or greater than the thickness of the support metal fitting.   The concave portion is formed by bifurcating the tip of the mounting portion, and the right and left wall portions of the concave portion in which the insertion side through hole and the through hole or screw hole are provided are formed integrally with the tip portion of the mounting portion. The support metal fitting according to any one of claims 1 to 5.

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