JP4436731B2 - Handrail bracket - Google Patents

Description

  The present invention relates to a handrail bracket used by being attached to a wall surface or the like.

JP 2002-81183 A

  In each home, handrails are often attached to wall surfaces such as stairs and corridors, and handrail brackets are used to connect the handrails and the wall surfaces at a predetermined distance.

  This handrail bracket has a handrail attached to one end side, and the other end is usually attached to a wall surface by a fixing screw such as a wood screw. Here, wallpaper is often affixed to the wall surface. In building construction of houses, wallpaper may be attached later than attachment of a handrail to a wall surface in the process. In this case, it is necessary to remove the handrail bracket once to paste the wallpaper. However, if the fixing screw is completely removed, the screw hole may be expanded when the screw is tightened again, and secure fastening may not be possible. There is. Also, if the screw holes that were originally fastened are covered with wallpaper, the location of the screw holes becomes difficult to understand when the handrail bracket is attached again later, which may be time consuming. In addition, the wallpaper that has been pasted up may be soiled when the handrail bracket is attached again.

Here, in the invention described in Patent Document 1, the handrail bracket is provided with a positioning member that remains attached to the wallpaper, and a body member that can be attached to and detached from the positioning member. The wall paper can be pasted with only the main body member removed, and the above problem is solved.
However, since the invention described in Patent Document 1 is composed of two members, it has a more complicated configuration than the conventional handrail bracket, which increases the manufacturing cost.

  Here, in metal fittings other than brackets for handrails that are attached to and removed from the fixing screws, etc., the holes for attaching the fixing screws on the metal fittings side are connected to the large diameter part and the small diameter part. It is well known that the metal fittings can be removed by forming a so-called dharma hole and slightly loosening the fixing screw.

  The inventor of the present application considered applying the above configuration to a handrail bracket. However, at the time of removal, the head of the fixing screw is caught on the edge of the large diameter portion of the Dharma hole, and sometimes it cannot be removed properly (see FIG. 4C). This is a remarkable problem because it is easy to get caught when the part where the Dalma hole is formed is formed by pressing the plate material, in addition to what is conventionally formed by zinc die casting, etc. there were.

  In view of the above problems, an object of the present invention is to provide a handrail bracket that has a simple structure and can be removed smoothly by slightly loosening a fixing screw.

  In order to solve the above problems, the invention described in claim 1 of the present application includes a handrail support portion 2 that is a portion that fixes the handrail R, a wall surface mounting seat 3 that is a portion that is fixed to the wall surface W, In the handrail bracket provided with the handrail support portion 2 and the arm portion 4 for connecting the wall surface mounting seat 3, the wall surface mounting seat 3 has a wall surface screw hole 31 penetrating from the front side to the back side. The wall surface screw hole 31 includes a fixing portion 31a which is a portion to which a fixing screw S for fixing the wall surface mounting seat 3 to the wall surface W is fixed, and a head portion S2 of the loosened fixing screw S. The fixing part 31a has a width dimension X1 larger than the diameter of the shaft part S1 of the fixing screw S and smaller than the diameter of the head part S2 of the fixing screw S. The above mounting / removing portion 31b has a fixing screw. It has a width dimension X2 larger than the diameter of the head S2, and is provided continuously with the fixing portion 31a. Of the edge portion 31c of the mounting external portion 31b, the fixing portion 31a is provided. At least a part of the portion located on the opposite side is provided with a screw contact surface 32a that can contact the head S2 of the fixing screw S in a loosened state, and the fixing screw S is provided on the screw contact surface 32a. By moving the wall surface mounting seat 3 in a state where the head S2 is in contact, the fixing screw S is guided so as to come out of the mounting exterior 31b without being caught by the edge 31c of the mounting exterior 31b. A handrail bracket is provided.

  In the invention according to claim 2 of the present application, the screw contact surface 32a is inclined so as to be separated from the wall surface contact surface 33 in the wall surface mounting seat 3 as it goes toward the fixing portion 31a. The handrail bracket according to claim 1, wherein the handrail bracket is formed.

  Further, the invention according to claim 3 of the present application is characterized in that the screw contact surface 32a is formed as a hemispherical surface that covers a part of the mounting external portion 31b from the front side. A handrail bracket is provided.

  In the present invention, the screw contact surface 32a is provided in the wall surface screw hole 31, so that the structure is simple, and it is possible to remove the fixing screw S smoothly without being caught only by slightly loosening the fixing screw S. A sliding bracket could be provided.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. 1-3 is explanatory drawing which shows the structure of the bracket for handrails of this example, and FIG. 4 is explanatory drawing which shows how to remove from the wall surface of the bracket for handrails of this example.

  As shown in FIGS. 1 to 3, the handrail bracket 1 of this example is formed by pressing each plate material such as a steel plate, and is a portion that fixes the handrail R. The sliding support portion 2, a wall surface mounting seat 3 that is a portion fixed to the wall surface W, and an arm portion 4 for connecting the handrail support portion 2 and the wall surface mounting seat 3 are provided.

The handrail support portion 2 is formed in a plate shape so as to follow the handrail R along the handrail R. In this example, the handrail support portion 2 is a rod-shaped handrail R having a circular cross section. In accordance with the curvature in the circumferential direction, the upper surface shown in FIG. The handrail support portion 2 is provided with a handrail screw hole 22 which is a through hole, and the handrail mounting surface 21 is brought into contact with the side surface of the handrail R. The handrail R is fixed by attaching a fixing screw such as a wood screw through the 22.
In the present invention, the method of fixing between the handrail support portion 2 and the handrail R is not limited to the method of screwing using the through hole as described above, and various modifications can be made. For example, a dowel may be provided in the handrail support portion 2 and the dowel may be fixed by being inserted into a dowel hole provided in the side surface of the handrail R.

  The arm portion 4 is provided between the handrail support portion 2 and the wall surface mounting seat 3, and protrudes to the front side of the wall surface mounting seat 3. In this example, the plate material is bent and formed. Although it is a hollow cylindrical portion, it may be solid when other materials are used. Moreover, although the arm part 4 of this example is formed integrally with the handrail support part 2 and the wall surface mounting seat 3, each is formed separately and joined by fitting, bolting, or the like. It is good as a thing. Moreover, in this example, as shown in FIG. 3, it is formed so as to be bent in a side view, but is not limited thereto, and may be formed in a straight line. The size of the arm portion 4 is determined depending on how far the handrail R is attached from the wall surface W.

  The wall mounting seat 3 is plate-shaped in this example. As shown in FIG. 1, a wall surface screw hole 31 is provided so as to penetrate from the front side to the back side. The contact surface 33 is in contact with the wall surface W. The wall surface screw hole 31 is a so-called dharma hole in which a large diameter portion and a small diameter portion are continuously formed in the vertical direction in the figure, and the small diameter portion in the upper part in the figure is a wall mounting seat. The fixing portion 31a is a portion to which a fixing screw S such as a wood screw is fixed to fix the wall 3 to the wall surface W. The large-diameter portion in the lower part of the figure is attached to and detached from the wall mounting seat 3. At this time, the attachment / detachment external portion 31b through which the head S2 of the loosened fixing screw S can be passed is formed.

  In addition, the wall surface mounting seat 3 in this example is provided with a second screw hole 34 below the wall surface screw hole 31 in addition to the wall surface screw hole 31 described above. The second screw hole 34 is formed as a long hole extending in the vertical direction in the figure, one end of which is open to the periphery of the wall surface mounting seat 3, and the fixing screw S is also attached to the second screw hole 34. That is, the wall surface mounting seat 3 of this example is fixed to the wall surface W by the four fixing screws S.

  As shown in FIG. 1, the fixing portion 31a of the wall surface screw hole 31 has a width dimension X1 larger than the diameter of the shaft portion S1 of the fixing screw S and smaller than the diameter of the head portion S2 of the fixing screw S. The attachment / detachment exterior 31b has a width dimension X2 larger than the diameter of the head S2 of the fixing screw S, and is provided continuously with the fixing portion S1. In this example, the fixing portion 31a is formed in an oval shape, and the mounting exterior 31b is formed in a substantially circular shape. However, these shapes are not limited to those in this example, and as described above, fixing screws As long as the relationship with S is satisfied, various modifications can be made.

  A space through which the fixing screw S of the mounting exterior 31b passes, and at least a portion of the edge portion 31c, which is the end surface of the wall mounting seat 3, located on the opposite side of the fixing portion 31a. As shown in FIG. 3, FIG. 4 (B), etc., a part of the screw contact surface 32a that can contact the head of the loosened fixing screw S is provided. The screw contact surface 32a is formed as a surface inclined so as to be separated from the wall surface contact surface 33 in the wall surface mounting seat 3 as it goes toward the fixing portion 31a (upward in the drawing). As shown in FIG. 1, the lower half of the attachment exterior 31 b shown in FIG. 1 is a semispherical inner surface of a cover portion 32 that covers the wall attachment seat 3 from the front side in a dome shape.

The cover portion 32 has a base end portion 32b that coincides with a portion of the edge portion 31c where the cover portion 32 is provided, and a tip end portion 32c is the front side of the wall mounting seat 3 of the mounting exterior 31b. It is coordinated to become. More specifically, the screw contact surface 32a of the cover portion 32 is provided continuously to the edge portion 31c.
Since the handrail bracket 1 according to this example is formed by pressing a plate material, the cover portion 32 is formed in a dome shape as described above and is projected to the front side. When formed by die casting or integral molding with resin, the cover 32 is formed in a shape different from the shape of the screw contact surface 32a, such as forming the cover 32 as a surface that does not protrude from the surface of the wall mounting seat 3. Also good.

Here, the operation of the screw contact surface 32a will be described. First, as shown in FIG. 4A, the fixing screw S fixed to the wall surface W with the wall surface mounting seat 3 sandwiched between the wall surface screw hole 31 and the second screw hole 34 is attached to the wall surface mounting seat 3. Loosen to the extent that can be shifted vertically. In this state, the wall surface contact surface 33 and the wall surface W of the wall surface mounting seat 3 are still in contact with each other.
Next, the wall surface mounting seat 3 is moved in the upward direction M1 while the wall surface contact surface 33 and the wall surface W of the wall surface mounting seat 3 are in contact with each other. Then, as shown in FIG. 4 (B), the fixing screw S moves from the fixing portion 31a of the wall surface screw hole 31 that originally existed to the mounting exterior 31b, and the lower edge of the fixing screw S in the head S2 shown in the figure. And the screw contact surface 32a of the wall surface mounting seat 3 abut. If the wall surface mounting seat 3 is further moved in the upward direction M1 in this state, the head portion S2 of the fixing screw S and the screw contact surface 32a of the wall surface mounting seat 3 remain in contact with each other. It moves in the oblique direction M2, and a gap of a distance X3 is naturally generated between the wall surface abutment surface 33 of the wall surface mounting seat 3 and the wall surface W. When the wall surface mounting seat 3 is moved in the upward direction M1, the fixing screw S can be removed from the wall surface screw hole 31. Therefore, the fixing screw S is guided so as to come out of the attachment / detachment exterior 31b in one stroke without being caught by the edge 31c of the attachment / detachment exterior 31b.

Here, when the screw contact surface 32a is not provided in the wall surface screw hole 31 of the wall surface mounting seat 3, depending on how the fixing screw S is loosened, as shown in FIG. The wall mounting seat 3 may be caught on the part S2, and may not be removed smoothly. Conventionally, when this happens, the wall surface mounting seat 3 has been removed.
On the other hand, in the handrail bracket 1 according to the present invention, as described above, the head S2 of the fixing screw S naturally comes into contact with the screw contact surface 32a from the wall screw hole 31. Since the fixing screw S can be removed, it can always be removed smoothly.

5A and 5B, the edge portion 31c of the mounting external portion 31b covers the wall surface contact surface 33 of the wall surface mounting seat 3 with respect to the form of the screw contact surface 32a. It is also conceivable that the surface that faces the mounting exterior 31b is used as a screw contact surface 32a. However, in this embodiment, since the wall mounting seat 3 is moved so that the fixing screw S and the screw contact surface 32a come into contact with each other, the direction is changed and the two steps of moving away from the wall surface W are required. There is a problem that the operability is inferior to the case where the screw contact surface 32a is inclined.
On the other hand, the handrail bracket 1 according to the present invention has an advantage that it can be removed smoothly in one stroke as described above.

  As for the second screw hole 34, as shown in FIG. 4B, when the fixing screw S in the fixing portion 31a of the wall surface screw hole 31 moves to the mounting exterior 31b as described above. Since the fixing screw S in the second screw hole 34 is released, the fixing screw S is caught in the second screw hole 34 when the wall surface mounting seat 3 is moved in each of the above directions M1 and M2. There is nothing.

The form of the screw contact surface 32a is not limited to that of this example. For example, as shown in FIGS. 5C and 5D, the cover portion 32 is configured to cover only the lower end portion in the figure of the edge portion 31c of the attachment external portion 31b in the wall surface screw hole 31, and the screw contact surface 32a is formed. A flat surface inclined with respect to the wall surface contact surface 33 may be used.
Further, as shown in FIGS. 5E and 5F, the cover portion 32 may be formed in a shifted manner without being provided on the center line of the wall surface screw hole 31 that is a dharma hole.

Further, even when the screw contact surface 32a is a hemispherical surface as in this example, the attachment exterior 31b may be covered in a wider range as long as the movement of the fixing screw S is not hindered.
In addition, the head S2 of the fixing screw S is in contact with the screw contact surface 32a without the head S2 of the fixing screw S being caught by the edge 31c of the mounting exterior 31b (see FIG. 4C). By moving the wall surface mounting seat 3, the fixing screw S is guided so as to come out of the mounting surface 31b without being caught by the edge 31c of the mounting surface 31b, and the wall surface mounting seat 3 is removed from the wall surface screw hole 31. As long as it is possible, various modifications can be made.

The handrail bracket 1 of this example is manufactured by pressing one plate material. Specifically, a plate material such as a steel plate cut out in accordance with the form of each part that will later be the arm part 4, the handrail support part 2, and the wall surface mounting seat 3 is formed into a tubular shape so as to be rolled up. Form. Then, by further bending the end portion of the arm portion 4 having a cylindrical shape, the handrail support portion 2 is formed on one end side of the arm portion 4 and the wall surface mounting seat 3 is formed on the other end side.
The conventional handrail bracket 1 is often manufactured by zinc die casting or the like, but it is difficult to reduce the cost and there is a problem such as strength reduction due to secular change. On the other hand, since press working can be performed relatively easily, the cost can be reduced, and there is almost no fear of strength reduction due to secular change.
The handrail bracket 1 according to the present invention is not limited to those manufactured by press working as in this example, but is conventionally manufactured by zinc die casting or resin molding. Other materials such as goods may be used.

Although not shown in the drawing, in the state in which the handrail R is attached to the wall surface W, a light emitter that can illuminate the foot of the handrail R and the presence of a person with the handrail are detected. A sensor that can be turned on may be provided.
In the past, in the dark, such as at night, a person trying to go up and down the stairs sometimes struggled to find the handrail R, and the lighting had to be turned on separately. In addition, when the handrail R is installed on the stairs, it is dangerous to move up and down in the dark, and sometimes the stairs are stepped off. However, the handrail bracket 1 emits light in this way. By providing the body and the sensor, it is possible to provide the handrail bracket that can easily find the handrail R and does not easily step off the stairs without separately turning on the light in the dark.

It is a front view which shows the bracket for handrails of this example. It is a top view which shows the bracket for handrails of this example. It is AA arrow sectional drawing in FIG. It is explanatory drawing of the cross-sectional view which shows the process in which the bracket for handrails of this example is removed, (A) shows the state in which the bracket for handrails was being fixed, and (B) was in the middle of removing the handrail bracket from the wall surface Shows the state. Moreover, (C) is explanatory drawing for a comparison which shows the state in which the fixing screw was caught by the wall surface mounting seat. (A) is a front view showing a comparative example of the screw contact surface, (B) is a sectional view taken along the line B-B, (C) is a front view showing another embodiment of the screw contact surface, (D). Is a cross-sectional view taken along the line CC, (E) is a front view showing still another embodiment of the screw contact surface, and (F) is a cross-sectional view taken along the line DD.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Handrail bracket 2 Handrail support part 3 Wall surface mounting seat 31 Wall surface screw hole 31a Wall surface screw hole fixing part 31b Wall surface screw hole mounting exterior 31c Mounting exterior exterior edge 32a Screw contact surface 4 Arm Part R Handrail S Fixing screw S1 Fixing screw shaft S2 Fixing screw head W Wall X1 Fixing width X2 Installation outside width

Claims (3)

A handrail support portion (2) which is a portion for fixing the handrail (R), a wall surface mounting seat (3) which is a portion fixed to the wall surface (W), a handrail support portion (2) and a wall surface mounting seat. (3) In the handrail bracket provided with the arm part (4) for connecting to,
The wall mounting seat (3) is provided with a wall screw hole (31) penetrating from the front side to the back side,
The wall surface screw hole (31) includes a fixing portion (31a) to which a fixing screw (S) for fixing the wall surface mounting seat (3) to the wall surface (W) is fixed, and a loosened fixing screw ( A mounting exterior (31b) through which the head (S2) of S) can pass,
The fixing part (31a) has a width dimension (X1) larger than the diameter of the shaft part (S1) of the fixing screw (S) and smaller than the diameter of the head part (S2) of the fixing screw (S). And
The mounting exterior (31b) has a width dimension (X2) larger than the diameter of the head (S2) of the fixing screw (S), and is provided continuously with the fixing part (31a). And
At least a part of the edge (31c) of the attachment exterior (31b) located on the opposite side of the fixing part (31a) has a head of the fixing screw (S) in a loosened state ( A screw contact surface (32a) capable of contacting S2) is provided;
By moving the wall surface mounting seat (3) in a state where the head (S2) of the fixing screw (S) is in contact with the screw contact surface (32a), the fixing screw (S) is attached to the mounting exterior (31b). A handrail bracket that is guided so as to come out of the mounting exterior (31b) without being caught by the edge (31c).   The screw contact surface (32a) is formed as a surface that is inclined so as to be separated from the wall surface contact surface (33) in the wall surface mounting seat (3) as it goes toward the fixing portion (31a). The handrail bracket according to claim 1, wherein:   The handrail bracket according to claim 2, wherein the screw contact surface (32a) is formed as a hemispherical surface that covers a part of the mounting exterior (31b) from the front side.

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