JPH0416840Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a wooden handrail material used, for example, in the handrails of stairs.

BACKGROUND ART When using the above-mentioned wooden handrail material for stairs, it is cut to an appropriate length depending on the length of the staircase and its form, and connected using connecting fittings to obtain the desired handrail shape.

Problems to be Solved by the Invention Conventional connecting fittings of this type are screwed into the first handrail material A from the surface to be joined to the first handrail material A, as shown in FIGS. 6 and 7, for example. A protruding male threaded portion 24 passing through the female hole 23 extending from the surface of the second handrail material B to be joined to the nut tightening recess 22, and a protruding male threaded portion 24 provided at the boundary between the wood threaded portion 21 and the male threaded portion 24. A male member 26 including a flange 25 that comes into contact with the surface to be joined together;
It consists of a washer 27 and a nut 28 that are fitted into a male threaded portion 24 protruding from a female hole 23 into a recess 22.

When fixing the male member 26 to the first handrail material A, screw the nut 28 onto the male threaded portion 24 until it reaches the flange 25, apply a spanner to the nut 28, and screw the wood threaded portion 21 into the first handrail material A ( (See Figure 7). When the collar portion 25 comes into contact with the surface of the first handrail material A to be joined, the wood screw portion 21 cannot be screwed in any further, so the nut 28 is unscrewed and removed.

When joining the first handrail material A and the second handrail material B, the male threaded part 24 protruding from the first handrail material A is inserted into the female hole 23 of the second handrail material B, and the female thread 24 is inserted into the recess from the female hole 28. Insert your hand from below the recess 22 into the external threaded part 24 protruding from the recess 22, fit the washer 27 and nut 28, and then
Insert a spanner from below 2 and tighten the nut 28.

By the way, conventionally, the handrail material to be connected has not been subjected to any processing. Therefore, holes are usually drilled in the end faces of the two handrail materials to be connected using a hand drill 29 (see Fig. 5), but it is difficult to drill holes accurately in the predetermined positions, and if an error occurs. However, since the connected handrail materials may be misaligned, there is an inconvenience in that the holes must be re-drilled or the holes in one of the two handrail materials must be enlarged to correct the error.

The purpose of this invention is to solve the above problem,
After cutting the handrail material appropriately at the handrail construction site,
To provide a wooden handrail in which a hole for fixing a connecting fitting exists precisely at a predetermined position on a cut surface of the wooden handrail.

Means for Solving the Problems The wooden handrail material of this invention consists of a handrail body in which a groove is formed in the longitudinal direction to reach the position where the connecting fitting is to be attached, and a plate piece fitted into the groove. A hole for fixing a connecting fitting is formed between the bottom surface of the groove and the surface of the plate piece facing the groove bottom.

Function The wooden handrail material according to this invention consists of a handrail material body in which a groove is formed in the longitudinal direction to reach the position where the connecting fitting is to be attached, and a plate piece fitted into the groove. A hole for fixing the connecting fitting is formed between the groove bottom of the piece and the facing surface, so when using wooden handrail material for stairs, for example, it can be cut to a predetermined length depending on the length of the stairs and its form. Then, a hole for fixing the connecting fitting exists precisely at a predetermined position on the cut surface, that is, the end surface to be connected.

Embodiment An embodiment of this invention will be described below with reference to the drawings.

The wooden handrail material according to this invention consists of a handrail main body 2 in which a groove 1 is formed in the longitudinal direction to reach the position where the connecting fitting is to be attached, and a plate piece 3 fitted in the groove 1. A connecting fitting fixing hole 4 is formed between the bottom surface and the surface of the plate piece 2 facing the groove bottom.

The groove 1 is formed from the lower surface of the handrail main body 2, and the lower surface and the lower surface of the plate piece 3 are flush with each other. However, the two do not necessarily have to be on the same level. When the plate piece 3 is fitted into the groove 1, adhesive is applied to both sides thereof.

The connection fitting fixing hole 4 is circular, and this is similar to the groove 1.
It is formed by semicircular recesses 4a and 4b formed oppositely on the bottom surface of the plate piece 3 and the groove bottom facing surface of the plate piece 3, respectively. FIGS. 2 to 4 show various examples of forming the connecting fitting fixing holes 4. FIG. Figure 2 shows an example in which a recess is formed only on the bottom side of groove 1, and Figure A is an inverted U.
The figure B is the shape. FIG. 3 shows an example in which recesses are formed only on the side facing the groove bottom of the plate piece 3, where A is U-shaped, B is V-shaped, C is shaped, and D is square-shaped.
Figure 4 shows an example in which the bottom shape of the groove 1 is shaped to form a hole. Figure A is a semicircular shape, Figure B is a flat horizontal shape, Figure C is an inverted V shape, and only in the case of A. In order to obtain a circular hole, the surface of the plate piece 3 facing the groove bottom is further formed into a semicircular concave arc shape.

The grooves 1 are machined at the same time when the handrail body 2 is machined into the required cross section, and if the handrail body 2 is straight, it will span the front length, and if it is bent and has a straight section at the end, it will be machined. , respectively, are formed only on the straight end portions. The groove 1 is preferably formed from the lower surface of the aesthetic handrail body 2, but it is also possible to form it from other surfaces.

Although one plate piece 3 having a length spanning the entire length of the groove 1 is used, a plurality of plate pieces 3 may be fitted into the groove 1 in a continuous manner. Further, although it is preferable to use the same type of wood for the handrail main body 2 and the board piece 3, different types of wood can also be used. If the thickness of the plate piece 3 is such that it must be press-fitted into the groove 1,
Application of the adhesive described above can be omitted.
When the handrail material is shipped from the factory, the plate pieces 3 are usually already fitted into the grooves 1, but they may be shipped separately and fitted on site.

The size and shape of the continuous fitting fixing hole 4 are determined as appropriate in accordance with the dimensions of the wood threaded portion of the connecting fitting. Of course, the holes 4 are drilled at predetermined positions in the two handrail materials to be connected. When fixing the male threaded part or other connecting part of the connecting fitting to the hole 4, the hole 4 is too small, so it is enlarged to a desired size.

Although Figures 6 and 7 show the case where two handrail materials are connected, the handrail material of this invention can be used not only to connect handrail materials to each other but also to the main pillar. can also be applied.

Effects of the invention According to this invention, when using wooden handrail materials for stairs, for example, when it is cut to a predetermined length depending on the length of the stairs and its form, the cut surface, that is, the end surface to be connected, can be cut at a predetermined position. Since there are precisely holes for fixing the connecting fittings, the connecting fittings can be fixed with high precision without having to worry about drilling accurate holes at the construction site, and the joint surfaces will not shift.

Note that the wooden handrail material according to this invention can of course be used for purposes other than stairs.

[Brief explanation of the drawing]

FIG. 1 is a partial perspective view showing an embodiment of this invention;
Figures 2 to 4 are partially enlarged cross-sectional views showing various examples of forming holes for fixing connection fittings, Figure 5 is a perspective view showing conventional hole drilling conditions for the end face of a handrail member, and Figure 6 is a diagram showing two handrails. FIG. 7 is a vertical cross-sectional view showing the state in which the members are connected, and FIG. 7 is a vertical cross-sectional view showing the state immediately before the wooden screw portion of the connecting fitting is fixed to one of the two handrail members and the other handrail member is connected to this. 1... Groove, 2... Handrail material body, 3... Board piece,
4...Hole for fixing the connection fitting.

Claims (1)

[Scope of utility model registration request] It consists of a handrail main body 2 in which a groove 1 is formed in the longitudinal direction to reach the position where the connecting fitting is to be attached, and a plate piece 3 fitted into the groove 1, and the bottom surface of the groove 1 and the groove bottom of the plate piece 2 A wooden handrail material in which a connecting fitting fixing hole 4 is formed between the opposing surface.