JPH11190116A - Connecting structure for handrail body and mounting bracket, and bracket for mounting handrail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To firmly and easily connect a handrail body to a mounting bracket, and the handrail body in which a core material is covered with a covering layer, without increasing complexity of the structure of the mounting bracket or the number of part items. SOLUTION: In a handrail body 1 constituted by a core material 11 and a covering layer 12, a slide groove 13 in the shape of a cross is formed in the core material 11 and the slide groove 13 made to communicate to the outside through an opening 14. A fitting projecting part 23 formed at the tip end of a mounting bracket 2 is in the shape similar to that of the slide groove 13 and fitted in the slide groove 13 capably of relative displacement only in its longitudinal direction. A mounting hole diagonally formed in the fitting projecting part 23 is faced on the opening 14, and the tip end of a tap screw 32 to be screwed into this mounting hole is strongly pressed onto an upper wall part of the core material 11. A reaction force acting on the fitting projecting part 23 in pressing is received by a bottom wall part of the core material 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coupling structure between a handrail main body and a mounting bracket, and a handrail mounting bracket.

[0002]

2. Description of the Related Art Some long handrail bodies have a core material covered with a coating layer. In such a handrail body, a slide groove having a predetermined cross-sectional shape is usually formed in a core material, and an opening for communicating the inside of the slide groove to the outside extends over the entire length in the circumferential direction at a predetermined position in the circumferential direction of the handrail body. It is growing. As a mounting bracket for fixing such a handrail body to the mounting surface, a mounting portion serving as a mounting portion to the mounting surface, a connecting portion extending from the mounting portion, and a connecting groove formed at the tip of the connecting portion and having the inside of the slide groove. In many cases, there is provided a fitting projection which is slidably fitted to the fitting. When the fitting protrusion is fitted in the slide groove, the mounting bracket is relatively displaceable only in the longitudinal direction with respect to the handrail main body, and the fitting protrusion is used to fix the fitting protrusion to the core material. , A predetermined coupling state in which the relative displacement is restricted.

[0003] In the case of installation in a large-scale building or the like, the connection between the handrail body and the mounting bracket using the mounting screw is performed in a state where the core material is not covered by the coating layer. It is performed by screwing from the direction orthogonal to the direction, that is, from the front-back direction of the core material, and connecting to the fitting convex portion. After the connection with the mounting screw, the core material including the mounting screw is covered with the coating layer. Is done.

Japanese Unexamined Patent Publications Nos. 9-151588 and 9-273283, and Japanese Utility Model Laid-Open No. 4-483 disclose coupling structures between a handrail body and a mounting bracket.
No. 30, JP-A-55-110640, and JP-A-54-81625.

[0005] JP-A-9-151588, JP-A-9-151588
In the structure of JP-A-273283, a joint bar that extends considerably in the longitudinal direction of the handrail body is separately fixed to the end surface of the mounting bracket, and a plurality of mounting screws screwed to this joint bar are attached to the handrail body. What can be tightened through the opening is disclosed. However, in this case, while the core material is covered with the covering layer, the handrail main body and the mounting bracket can be connected,
Separately, a joint bar and a fixing screw for fixing the joint bar to the mounting bracket are required, so that the structure is complicated and the number of parts is increased.

In Japanese Utility Model Laid-Open Publication No. 4-48330, the handrail body is not formed of a core material and a coating layer, and the tip of the mounting bracket is simply formed in a recess formed in the handrail body in the radial direction. It is fixed by the mounting screw in the state inserted from the, the mounting screw bears all the longitudinal force acting on the handrail body and the pulling force from the concave part, ensuring sufficient bonding strength Is difficult.

In Japanese Unexamined Utility Model Publication No. Sho 55-110640 and Japanese Unexamined Patent Publication No. Sho 54-81625, the handrail body is composed of a core material and a coating layer. In order to make the screw invisible from the outside, it is necessary to cover the core with a cover layer after the connection with the mounting screw. Also, Japanese Patent Application Laid-Open No. Sho 54-8162
In the structure disclosed in Japanese Patent Application Laid-Open No. 5 (1993) -197, a joint bar is separately rotatably attached to the tip of the mounting bracket, and the structure is complicated and the number of parts is increased.

[0008]

In the case where the handrail body is composed of a core material and a coating layer, if it is installed in a general house or the like, a specialized worker for covering the core material with the coating layer is secured. From the viewpoint of difficulty and workability, it is strongly desired that the mounting bracket and the handrail main body be connected in a state where the core material is covered with the coating layer in advance. In this case, it is desired that an unsightly thing such as a mounting screw be connected in a state that cannot be easily seen from the outside,
It is also desirable to avoid a mounting bracket having a complicated structure or an increase in the number of parts.

The present invention has been made in consideration of the above circumstances, and a first object of the present invention is to reduce the complexity of the mounting bracket and increase the number of parts in a state where the core material is covered with a coating layer. An object of the present invention is to provide a coupling structure between a handrail main body and a mounting bracket, which can easily and firmly connect the handrail main body and the mounting bracket without causing the problem. Further, a second object of the present invention is to provide a handrail mounting bracket used for achieving the first object.

[0010]

In order to achieve the first object, the present invention has the following solution. That is, as described in claim 1 of the claims, a core material having a shape forming a slide groove therein and a coating layer covering the core material communicate with the slide groove to the outside. The handrail body formed so that the opening to be extended in the longitudinal direction at a predetermined position in the circumferential direction, a mounting portion serving as a mounting portion to the mounting surface, a connecting portion extending from the mounting portion, and a distal end of the connecting portion. A mounting bracket having a fitting protrusion formed and slidably fitted in the slide groove; and a fitting bracket having a fitting protrusion when the fitting protrusion is fitted into the slide groove. The base portion passes through the opening, and the handrail body and the mounting bracket can be relatively displaced only in the longitudinal direction of the handrail body. In the department,
A mounting hole is formed so as to extend diagonally from the side surface to the upper surface and an opening end on the side surface faces the opening, and a tip of a mounting screw screwed into the mounting hole is positioned above the core material. The wall is pressed. Preferred embodiments based on the above solution are as described in claims 2 to 5 in the claims.

In order to achieve the second object, the present invention has the following solution. That is, as described in claim 6 of the claims, in a handrail mounting bracket used when fixing the handrail body to the mounting surface, a mounting portion serving as a mounting portion to the mounting surface,
A connecting portion extending integrally from the mounting portion, a fitting convex portion formed at a distal end portion of the connecting portion, and a mounting hole extending obliquely from a side surface to an upper surface of the fitting convex portion; The fitting convex portion has a shape having a distal convex portion and a pair of front and rear convex portions formed slightly closer to the base end side than the distal convex portion. Preferred embodiments based on the above solution are as described in Claim 7 and the following claims.

[0012]

According to the first aspect of the present invention, when the fitting projection of the mounting bracket is fitted into the slide groove of the core material, it is relatively displaced only in the longitudinal direction of the handrail body. Since the upper and lower, left and right, and circumferential directions are not relatively displaced using the above-mentioned fitting, the load of the mounting screw is small to maintain the connection, which is preferable in sufficiently securing the connection strength. Become. Further, there is no need to use a separate joint bar or the like, the structure is simple, the number of parts is small, and the cost can be reduced. further,
In the state where the fitting protrusion is fitted in the slide groove, it is only necessary to perform the work of tightening the mounting screw through the opening, and the joining work becomes easy. Of course, since the handrail main body is installed so that the opening is usually located at a position where it is hard to see, the mounting screws are not easily seen from the outside, and the appearance is also preferable.

According to the second aspect, the reaction force when the mounting screw is tightened is received by the pair of left and right reaction force receiving portions formed on the core material, so that the tightening force of the mounting screw is widely dispersed and received. be able to. According to the third aspect, processing of the mounting hole is easy.

According to the fourth aspect, the shape of the slide groove can be a shape that has been widely used in the past, that is, the handrail body can be used as it is as a conventional product.
Also, the shape of the fitting projection, that is, the mounting bracket itself,
It can also be used when the core material is covered with a coating layer after the core material and the mounting bracket are joined by the mounting screws. According to the fifth aspect, the mounting bracket can be mass-produced at low cost by using an extruded product.

According to claim 6, claim 1, claim 2,
It is possible to provide a handrail mounting bracket capable of obtaining the effect corresponding to the fourth aspect. According to the seventh aspect, it is possible to provide a handrail mounting bracket capable of obtaining the effect corresponding to the fifth aspect. Claim 8
According to the present invention, it is possible to provide a handrail mounting bracket capable of obtaining the effect corresponding to claim 3.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 denotes a long handrail main body, and 2 denotes a mounting bracket thereof. The handrail main body 1 has a predetermined mounting surface near a corridor or a stairway via the mounting bracket 2. 3 fixed.

As shown in FIG. 2, the handrail main body 1 includes a core material 11 and a coating layer 12 that covers the core material 1. The core material 11 is formed by extruding a material having sufficient rigidity, for example, a light metal such as a metal, particularly an aluminum alloy, and has a slide groove 13 therein. The coating layer 12 is formed of a soft, hard, or semi-hard synthetic resin, and has a substantially circular outer periphery, but the shape is not particularly limited. And the coating layer 12
In the state where the core material 11 is covered with the
Are communicated (opened) to the outside, that is, to the outer peripheral surface of the coating layer 12 through the opening 14. The opening 14 extends at a predetermined position in the circumferential direction of the handrail main body 1 over the entire length in the longitudinal direction.

The shape of the slide groove 13 is a cross shape as a whole, including a part of the opening 14. That is, the slide groove 13 has a square central space portion 15 located at the central portion thereof and the central space portion 4
It consists of four side spaces 16 to 19 located on one side. A portion located on the opposite side to the opening 14 is an upper side space 16, and a portion located in a direction orthogonal to the opening 14 is a pair of left and right side side spaces 17, 18.
The portion of the opening 14 which is the end on the slide groove 13 side is the lower side space 19. Each of the side space portions 16 to 19 has the same rectangular shape, and extends so that its long side is parallel to each side of the central space portion 15. The slide groove 13 has a center 9 around the center of the central space 15.
It has a rotationally symmetrical shape at every 0 degree. That is, the shape of the slide groove 13 is set to be the same every time it rotates 90 degrees clockwise in FIG.

Another description of the shape of the slide groove 13 is as follows. That is, as shown by the dashed line in FIG. 2, when a square larger than the central space 15 is considered, the shape when the four corners of the large square are filled with the same small square is the same as the shape of the slide groove 13. Is done. The core material 11 that defines such a slide groove 13 includes:
The upper wall is denoted by reference numeral 11a, and a pair of left and right side walls is denoted by reference numeral 11b. Although the bottom wall portion is indicated by reference numeral 11c, the bottom wall portion 11c is configured to be divided into right and left due to the configuration of a part of the opening 14, and the bottom wall portion 11c divided into right and left portions. Is a reaction force receiving portion described later. The opening width of the opening 14 (the width in the left-right direction in FIG. 2) is
The width of the upper side space portion 16 and the width of the lower side space portion 19 are the same as those of the lower side space portion 19.
The center space 15 and the upper side space 16 are exactly coincident with each other.

The mounting bracket 2 includes a mounting portion 21 serving as a mounting portion for the mounting surface 3, a connecting portion (leg) 22 integrally extending from the mounting portion 21, and a fitting protrusion formed at a distal end portion of the connecting portion 22. And a portion 23. The mounting portion 21 is provided on the mounting surface 3.
And is fixed to the mounting surface 3 by a fixing screw 24. After fixing, the mounting portion 2
1 is covered almost entirely by a cover member 25, including the fixing screw 24.

As shown in FIG. 4, the fitting projection 23 has a shape similar to the slide groove 13 as a whole and has a shape slightly smaller than the slide groove 13.
That is, the fitting protrusion 23 is fitted slidably into the slide groove 13 from the longitudinal end of the handrail body 1. The distal end portion of the connecting portion 22 is linearly formed by a predetermined length from the distal end surface toward the proximal end side, and its basic width (width in the left-right direction in FIG. 1) is substantially the same as the opening width of the opening 14 (slightly). Small). The fitting convex portion 23 has a distal convex portion 23a having the same width as the basic width, and a pair of front and rear convex portions 23b formed slightly closer to the base end than the distal convex portion 23a (for the mounting bracket 2). Is a longitudinal end surface of the slide groove 13 as a side surface, and the right and left direction in FIG.

The tip convex portion 23a is provided in the upper side space 1
6 and the front and rear convex portions 23b are fitted into the side space portions 17 and 18. Of course, when the fitting protrusion 23 is fitted in the slide groove 13,
A portion of the fitting convex portion 23 closer to the base end than the front and rear convex portions 23b is connected to the connecting portion 22 in a state of passing through the opening 14.

The fitting projection 23 has a mounting hole 31 formed therein. 3 to 5, the mounting hole 31 extends obliquely from one side surface of the fitting convex portion 23 toward the upper surface (the upper surface of the distal convex portion 23a), and is approximately 45 degrees in the embodiment. It is inclined. An attachment screw 32 is screwed into the attachment hole 31, but before the attachment screw 32 is screwed, the inner surface of the attachment hole 31 is a smooth surface. That is, the attachment hole 31 is formed by, for example, drilling from the upper surface of the tip protrusion 23a, for example, but the screw groove is not separately machined on the inner surface.

The mounting screw 32 is a tap screw. That is, the diameter of the valley portion of the thread groove of the mounting screw 32 is substantially the same as the inner diameter of the mounting hole 31 (in the embodiment, set slightly smaller than the inner diameter of the mounting hole 31), while the outer shape of the thread portion is Is set slightly larger than the inner diameter of the mounting hole 31. Thus, by screwing the mounting screw 32 into the mounting hole 31, a screw groove is formed on the inner surface of the mounting hole 31.

The extension trajectory of the mounting hole 31 is such that the fitting projection 23 is fitted to the slide groove 13 so as to face the opening 14, that is, the handrail body 1 passes through the opening 14.
Is connected to the outside. And mounting screw 3
The outer diameter of the second head 32 a is set smaller than the opening width 14 of the opening 14. Preferably, the position of the opening end of the mounting hole 31 on the side surface of the mounting bracket 2 is set at an intermediate position between the pair of front and rear convex portions 23b (an intermediate position of the thickest portion).

At the time of mounting the handrail body 1, the following procedure is performed. First, the mounting screw 32 is screwed into the mounting hole 31 in advance. At this time, the head 32a of the mounting screw 32 is positioned on the side surface of the fitting projection 23, and the mounting screw 32 is The screw is screwed so that the tip does not project from the tip surface of the fitting projection 23 (the upper surface of the tip projection 23a). The handrail main body 1 is prepared in advance in a factory or the like in a state where the core material 11 is covered with the covering layer 12.

From the end of the handrail body 1, slide grooves 1
The fitting projection 23 of the mounting bracket 2 is fitted in the fitting 3. Thereafter, the mounting portion 21 of the mounting bracket 2 is fixed to a predetermined position on the mounting surface 3 by the fixing screw 24, and then the mounting portion 21 is covered with a cover member 25. Thereafter, with the relative position between the mounting bracket 2 and the handrail body 1 (the relative position of the handrail body 1 relative to a predetermined position of the mounting surface 3) determined, the mounting screw 32 is placed on the core material 11 as shown in FIG. What is necessary is just to strongly press-fit to the wall part 11a (through the opening part 14,
The screwing work of the mounting screw 32 is performed by a rotating tool such as a screwdriver).

When the tip of the mounting screw 32 presses the inner surface of the upper wall of the core 11 or bites into the upper wall 11a of the core 11, the handrail main body 1 is moved relative to the mounting bracket 2. The relative displacement in the longitudinal direction is restricted. Further, under the reaction force due to the tightening force of the mounting screw 32, the lower surface of the front and rear protrusions 23b of the fitting protrusions 23 is strongly pressed against the bottom wall portion 11c of the core material 11 as a reaction force receiving portion, This also restricts the handrail body 1 from being displaced relative to the mounting bracket 2 in the longitudinal direction.

The mounting screw 32 can be screwed into the mounting hole 31 after the fitting protrusion 23 is fitted into the slide groove 14, but before the fitting, a large work space is required. It is preferable that the mounting screw 32 is screwed into the mounting hole 31 among them. Alternatively, the attachment bracket 2 may be fixed to the attachment surface 3 after the handrail main body 1 and the attachment bracket 2 are joined using the attachment screws 32 first.

Here, the mounting bracket 2 is
1, including the connecting portion 22 and the fitting convex portion 23, are integrally formed by extrusion molding. As shown in FIG. 3, the extruded molded product W is cut at predetermined intervals L, which is a required width of the mounting bracket 2 (a cutting line is indicated by a symbol C), so that the mounting bracket 2 is cut. Semi-finished product is obtained. On the obtained semi-finished product, a mounting hole 31 is machined, and a screw hole 33 for the fixing screw 24 is formed.
By machining the final mounting bracket 2
Is obtained. A tip protrusion 23a that forms the fitting protrusion 23;
The side convex portion 23 has the same length as the predetermined width L of the mounting bracket 2 so that no post-processing is required after the semi-finished product.

At the time of the extrusion molding, the extruding direction is set in the width direction of the mounting bracket 2 (horizontal direction in FIG. 3; It is preferable to form a thin and shallow concave line portion 34 extending at the same time. That is, the concave line portion 34 can be used as a center positioning line on which the tip of the drill hits when the mounting hole 31 is machined from the tip end side of the fitting projection 23.

Although the embodiment has been described above, the present invention is not limited to this, and includes, for example, the following cases. The shape of the slide groove 13 and the shape of the fitting projection 23 can ensure a fitting relationship in which the slide groove 13 can slide only in the longitudinal direction (the vertical direction, the horizontal direction, and the circumferential direction of the handrail body 1 in FIG. 1). Relative displacement can be regulated), and an appropriate shape can be adopted. Mounting hole 31 (Mounting screw 3
2) may be provided not only on either one of the side surfaces of the fitting projection 23 but also on both of the side surfaces.

In the mounting bracket 2, the shape of the mounting portion 21 and the shape of the connecting portion 22 can be appropriately changed from those shown in the embodiment. The objects of the invention are not limited to those explicitly stated, but also implicitly include providing what is substantially preferred or described as advantages. Of course, the present invention can also be grasped as a method of attaching the handrail body (construction method).

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, and is an overall side view of a handrail main body viewed from a longitudinal direction, and a main part is indicated by X in FIG.
The cross section is shown by the line 1-X1.

FIG. 2 is an enlarged sectional view of the handrail main body shown in FIG.

FIG. 3 is a front view of the mounting bracket shown in FIG. 1 and also illustrates a method of obtaining the mounting bracket from an extruded product.

FIG. 4 is a view of the mounting bracket as viewed from one side where a mounting hole is opened.

FIG. 5 is a cross-sectional view corresponding to line X5-X5 of FIG. 1, showing a state in which the mounting bracket and the handrail main body are connected by mounting screws.

[Explanation of symbols]

 1: Handrail body 2: Mounting bracket 3: Mounting surface 11: Core material 11a: Top wall portion 11b: Side wall portion 11c: Bottom wall portion (reaction force receiving portion) 12: Covering layer 13: Slide groove 14: Opening 15: Central space 16: Upper side space 17, 18: Side side space 19: Lower side space 21: Mounting part 22: Connecting part 23: Fitting convex part 23a: Tip convex part 23b: Front and rear convex Part 31: Mounting hole 32: Mounting screw 32a: Head of mounting screw W: Extruded product L: Cutting interval C: Cutting line

Claims (8)

[Claims] An opening for communicating the slide groove to the outside is formed in a longitudinal direction at a predetermined position in a circumferential direction, comprising a core material having a shape forming a slide groove therein, and a coating layer covering the core material. A handrail main body formed so as to extend to the mounting surface, a mounting portion serving as a mounting portion to the mounting surface, a connecting portion extending from the mounting portion, and a sliding portion formed at the tip of the connecting portion and slidably into the slide groove. A mounting bracket having a fitting projection to be fitted, and a state in which a base end portion of the fitting projection passes through the opening when the fitting projection is fitted into the slide groove. The handrail main body and the mounting bracket are configured to be relatively displaceable only in the longitudinal direction of the handrail main body. While extending, the open end on the side surface is A handrail body and a mounting bracket, wherein a mounting hole is formed so as to face the mouth, and a tip of a mounting screw screwed into the mounting hole presses an inner surface of an upper wall portion of the core material. And connection structure. 2. The core according to claim 1, wherein the shape of the core is located near an opening end of the opening on the slide groove side, and the inner surface of the upper is pressed by the mounting screw. And a pair of left and right reaction force receiving portions for receiving a reaction force against the fitting convex portion generated at the step (a). 3. The mounting screw according to claim 1, wherein the mounting hole is a flat surface whose inner surface is not threaded and whose inner diameter is substantially the same as the root diameter of the mounting screw. A coupling structure between a handrail main body and a mounting bracket, wherein a screw groove is formed on an inner surface of the mounting hole by being screwed and screwing the mounting screw into the mounting hole. 4. The center space part according to claim 1, wherein the shape of the slide groove is a square central space part, and the upper part, the left side part and the lower part of the central space part have the same rectangular shape. It has one upper side space formed on a long side shorter than the length of one side, two left and right side side spaces, and one lower side space forming a part of the opening. Thus, the shape of the entire hollow portion including the central space portion and the four side space portions is formed as a cross shape, and the shape of the fitting projection is fitted into the upper side space portion. A handrail main body, which is formed in a shape having a tip convex portion and a pair of front and rear convex portions located below the tip convex portion and fitted into the side lateral space portions. Connection structure with the mounting bracket. 5. The method according to claim 1, wherein the mounting bracket is extruded into a predetermined cross-sectional shape in which the mounting portion, the connecting portion, and the fitting protrusion are integrated, and then cut into a predetermined width. A coupling structure between a handrail main body and a mounting bracket, which is formed by machining a mounting hole. 6. A handrail mounting bracket used for fixing a handrail body to a mounting surface, a mounting portion serving as a mounting portion to the mounting surface, a connecting portion extending integrally from the mounting portion, and a tip of the connecting portion. A fitting convex portion formed in the portion, and a mounting hole extending obliquely from a side surface to an upper surface of the fitting convex portion, wherein the fitting convex portion has a tip convex portion and a tip convex portion. And a pair of front and rear convex portions slightly formed on the base end side. 7. The method according to claim 6, wherein the mounting bracket is extruded into a predetermined cross-sectional shape in which the mounting portion, the connecting portion, and the fitting protrusion are integrated, and then cut into a predetermined width. A handrail mounting bracket, which is formed by machining a mounting hole. 8. The handrail mounting bracket according to claim 6, wherein the mounting hole is formed as a smooth surface having no thread groove formed on an inner surface thereof.