JPH044103Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is a handrail structure that is attached to a steel-framed outdoor stairway unit that is constructed by connecting a diagonal stair frame and a floor frame for a landing, second floor hallway, etc. It is related to.

(Prior Art and its Problems) When attaching a handrail to the steel-framed outdoor stairway unit as described above, handrail supports must be erected on the sides of the stair frame or floor frame. On-site welding and bolting are known methods for attaching handrail supports, but on-site welding is not only expensive but also less workable, and the bolting method has these drawbacks. However, the bolt head will be exposed on the surface of the column, resulting in a poor appearance.

Methods to solve the problems with this bolting method include welding a bracket made of angle material or the like to the column in advance and bolting this bracket to the frame, or drilling a screw hole in the side wall of the column. However, methods are known in which the inner end of the mounting bolt is screwed into this threaded hole, but the former bracket welding method fundamentally solves the problems with the strut welding method explained earlier. In the latter method, although it becomes necessary to use thick pipe material as the support, the mounting strength may be reduced and safety may be compromised. Particularly when square pipes made of aluminum are used for struts, it is not possible to obtain the necessary strength by forming screw holes directly in the side walls of the struts and fastening them with bolts.

(Means for Solving the Problems) The present invention proposes a handrail structure that can solve the above-mentioned conventional problems. The pillars are fixed to the circumferential corners of the floor frame, etc., with bolts whose inner ends are threaded into the reinforcing core material built into the pillars, and a handrail side frame is erected between each pillar. be.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

Figure 1 shows the steel-framed outdoor stairway unit before the handrails are attached, 1 is the floor frame for the landing,
2 is a frame for the second floor corridor floor, 3 is a stair frame between the ground and the floor frame 1 for the landing, and 4 is a stair frame between the floor frame 1 for the landing and the floor frame 2 for the second floor corridor. C-shaped steel 5 is used facing outward on both the left and right sides of the stair frames 3 and 4 and on both the left and right sides of the floor frame 1 for the landing, and is used for both the front and rear sides of the floor frame 1 for the landing and the floor frame for the second floor corridor. C-shaped steel 6 is used on the circumferential side of the building 2, and flooring materials 7 and 8 are laid on the floor frame 1 for the landing and the floor frame 2 for the second floor corridor.

As shown in FIGS. 3, 4, and 8, strut mounting plates 9 are welded in advance to the inside of the C-shaped steel 5 on both the left and right sides of the upper and lower ends of the stair frame 3, and on the left and right sides of the lower end of the stair frame 4. has been done. Further, at both left and right corner portions of the landing floor frame 1 opposite to the stair frames 3 and 4, there are provided strut mounting plates 10 in which vertical plate portions of C-shaped steel 6 extend left and right.

FIG. 2 shows the stairway unit shown in FIG. 1 with handrails attached to the required locations, 11 to 13 are inclined handrails attached to the sides of the stair frames 3 and 4, and 14 is a handrail with one end inclined forward and backward. A horizontal handrail 15 is attached in a U-shape to the circumferential side of the floor frame 1 for the landing so as to be connected to the floor frame 1 for the landing, and 15 is a side part of the floor frame 2 for the second floor corridor so that one end is connected to the upper end of the front and rear inclined handrail 13. This is a horizontal handrail attached to the. All the pillars used at the ends and corners of these handrails, i.e. the pillars 16 and 17 located at both the upper and lower ends of the inclined handrails 11 to 13, and the U-shaped horizontal handrail 1.
Pillars 18 located at both corners and the free end of 4
20 and the support column 21 located at the free end of the horizontal handrail 15 are made of square aluminum pipe material, and as shown in FIG. A thick portion 22 is formed;
Furthermore, as shown in FIGS. 3 to 9, a reinforcing core material 23 made of iron plate and having a U-shaped cross section is fitted inside the column and comes into contact with the inner periphery of the column in an area extending from the lower end to an appropriate intermediate height. There is. There are two upper and lower bolt holes 2 at the lower end of the column so as to pass through the thick part 22.
2a, and screw holes 23a are formed in the core material 23 so as to match these bolt holes 22a. Note that the bolt hole 22a can also be a screw hole. Furthermore, if the thickness of the core material 23 is insufficient, it is desirable to increase the length of the screw hole 23a by burring.

Supports 16 and 17 at both upper and lower ends of inclined handrails 11 and 12
The lower end support 17 of the inclined handrail 13 and the free end support 20 of the U-shaped horizontal handrail 14 are welded to the adjacent C-shaped steel 5, respectively, as shown in FIGS. 3, 4, and 8. Angle material 24 on the pillar mounting plate 9
It is bolted through. That is, one side piece of the angle member 24 is fixed to the side adjacent to the C-shaped steel 5 at the lower end of the pillars 16 and 17 by two upper and lower bolts 25. , 17 through the screw holes 23a of the reinforcing core material 23. The other side piece of this angle member 24 is fixed to the column mounting plate 9 by two upper and lower bolt nuts 26.

The pillars 18 and 19 located at both corners of the U-shaped horizontal handrail 14 are inserted into the bolt holes 22a of the pillar mounting plate 10, which protrude from both left and right ends of the C-shaped steel 6, respectively, as shown in FIGS. 3 and 5. , is directly attached via the screw hole 23a of the core material 23 and two upper and lower bolts 27. In addition, the upper end support 16 of the remaining inclined handrail 13 and the free end support 21 of the horizontal handrail 15 are the seventh
As shown in the figure, the bolt holes 22a, the screw holes 23a of the core material 23, and the two upper and lower bolts 2 are formed on the surface of the inward C-shaped steel 6 of the floor frame 2 for the second floor hallway.
Directly attached via 8.

As shown in FIG.
between 9 and 20, and the supports 16 and 2 of the horizontal handrail 15.
Each room has an aluminum handrail side frame 29.
~35 have been constructed. Each of these handrail side frames is composed of a cap 36, a rim 37, and a plurality of lattice members 38 connecting the cap 36 and the rim 37 at appropriate intervals, as shown in FIGS. 3 to 7. Both the cap 36 and the rim 37 have lattice mounting plates 36a and 37a integrally protruding from one side of each pipe material over the entire length, and the ends of the lattice 38 are attached to these lattices. Material mounting plates 36a, 37a
It is screwed onto the side of the.

Both ends of the rim 37 of the handrail side frames 29 to 31 of the inclined handrails 11 to 13 and the columns 16 and 17 are connected to each other by screws 3 on the sides of the columns 16 and 17, as shown in FIG.
U-shaped planar rim stopper 4 fixed at 9
0 is fitted into the end of the furring rim 37, and both sides of the stopper 40 and both sides of the furring 37 are connected by fixing them with screws 41. In addition, both ends of the rim 37 of the handrail side frames 32 to 35 of the horizontal handrails 14 and 15 and the supports 16 and 18 to 21 are as follows.
As shown in FIGS. 3, 5, 6, and 9, the end of the rim 37 is fitted into the upward U-shaped rim receiver 43 fixed to the side of each support with a screw 42. At the same time, both sides of this receiving metal fitting 43 and the body rim 3
It is connected by fixing both side parts of 7 with screws 44.

Each handrail side frame 3 in the U-shaped horizontal handrail 14
The pillars 18 and 19 located at the corners of the handrail 14 and the caps 36 of 2 to 34 are corner fittings 45 as shown in FIGS. 3, 5, and 10.
connected by. That is, as shown in FIG. 10, the ends of the cap 36 cut at an angle of 45 degrees are abutted at right angles directly above the supports 18 and 19, and the metal fitting 4 is placed over the right-angled abutted portions of the cap 36 from above.
5, and the outer angle part 4 of the covering fitting 45.
The upper half of 5a is fixed to the sides of the protruding corners of both caps 36 with screws 46, and the lower half is fixed to both outer sides of the pillars 18 and 19 with screws 47, and the inside of the fitting 45 is fixed. Angle part 45b
are fixed to the inner corner sides of both caps 36 by screws 48, respectively.

Handrail side frame 34 in U-shaped horizontal handrail 14
The Kasagi 36, the pillar 20 located at the free end of the handrail 14, and the handrail side frame 35 of the horizontal handrail 15
The Kasagi 36 and the support 21 located at the free end of the handrail 15 are the support 21 located at the free end of the handrail 15, as shown in FIGS.
A downward U-shaped connecting fitting 49 is placed over the Kasagi 36 placed on the upper end of the 0, 21, and the connecting fitting 49 is
The upper half of each side of the connecting fitting 49 and the both sides of the cap 36 are fixed with screws 50, and the lower half of both sides of the connecting fitting 49 and the upper end of the pillars 20, 21 are fixed with bolts and nuts 51. ing. In addition, the connecting fitting 4 to be placed over such a cap 36
Instead of 9, it is also possible to use a connecting fitting that is screwed to the bottom of the cap 36 and that fits inside the supports 20, 21.

Handrail side frame 29 for inclined handrails 11 to 13
To connect the Kasagi 36 of 31 and the supports 16 and 17,
As shown in FIGS. 3 and 4, a connecting fitting 52 that also serves as a cap is placed over the upper ends of the columns 16 and 17,
53 is used. As shown in FIGS. 11 to 14, the connecting fitting 52 has a cap connecting portion 55 connected diagonally downward at a predetermined angle from one side of a cap portion 54 that is fitted onto the upper end of the support 16. This Kasagi connection part 55 connects the left and right sides and the upper side of the triangular space between the end of the Kasagi 36 cut at right angles and the cap part 54, and the end facing diagonally downward A pair of left and right outer plate portions 57 and a pair of left and right inner plate portions 58 are provided to protrude, forming a pair of left and right grooves 56 into which both side plates 36b of the Kasagi 36 fit, and a screw hole 58a is provided in the inner plate portion 58. formed,
A notch 57a is formed in the outer plate portion 57 facing the screw hole 58a. Furthermore, shallow recessed surfaces 60 are formed on the remaining three side surfaces of the cap portion 54 for positioning a Kasagi connection fitting 59 having a U-shaped planar shape and fitted inside the end portion of the Kasagi 36.

However, the caps 36 of the handrail side frames 29 to 31 of the inclined handrails 11 to 13 have their side plates 36b inserted into the pair of left and right grooves 56 in the caps connecting portion 55, and the caps 36b and The inner plate part 58 is connected to the connecting fitting 52 by fastening the inner plate part 58 with the screw hole 58a and the screw 61 that is screwed into the screw hole 58a.

At the locations where the caps 36 of the handrail side frames 32 and 35 of the horizontal handrails 14 and 15 are connected to the support columns 16, metal fittings 52 are formed on three sides of the connection fittings 52 that fit into the upper ends of the support columns 16. Of the concave surface 60,
For example, as shown in FIGS. 11 to 13, the base 59a of the Kasagi connection fitting 59 is fitted into one recessed surface 60 at the Kasagi connection position and fixed with a screw 62, and a handrail is attached to the Kasagi connection fitting 59. The ends of the caps 36 on the side frames 32 and 35 are fitted externally, and both sides of the caps 36 and the connecting fittings 5 are fitted together.
By fixing both sides of the cap 9 with screws 63, the cap 36 and the connecting fitting 52 can be connected.

A connecting metal fitting 53 that also serves as a cap is used to connect the caps 36 of the handrail side frames 29 to 31 and the supports 17.
As shown in FIGS. 15 to 18, the pillar 17
A Kasagi connection part 65 is connected diagonally upward at a predetermined angle from one side of the cap part 64 which is externally fitted onto the upper end part. This Kasagi connection part 65 connects the right and left sides of the triangular space between the end of the Kasagi 36 cut at right angles and the cap part 64, and the Kasagi connection part 65 connects the left and right sides of the triangular space between the end of the Kasagi 36 cut at right angles and the cap part 64. 36 both side plates 36
A pair of left and right outer plate portions 67 and a pair of left and right inner plate portions 68 are protruded to form a pair of left and right grooves 66 into which the screw holes 68a are formed. Outer plate portion 67 facing 68a
A notch 67a is formed in. Furthermore, shallow recessed surfaces 69 for positioning the Kasagi connection fittings 59 are formed on the remaining three side surfaces of the cap portion 64.

However, the caps 36 of the handrail side frames 29 to 31 in the inclined handrails 11 to 13 have their side plates 36b fitted into the pair of left and right grooves 66 in the caps connecting portion 65, and the caps 36b and The inner plate part 68 is connected to the connecting fitting 52 by fastening the inner plate part 68 with the screw hole 68a and the screw 70 that is screwed into the screw hole 68a.

In the example shown in FIG. 2, there is no place where another horizontal handrail is connected to the lower end support 17 of the sloped handrails 11 to 13, but for example, a sloped handrail may also be connected to the side of the stair frame 4 opposite to the side where the sloped handrail 13 is located. When installing vertically,
A U-shaped horizontal handrail 14 is attached to the lower end support of the inclined handrail.
It becomes necessary to connect the side frame 34 for the handrail. In such a case, the handrail side frame 34 of the connecting fitting 53 fitted to the upper end of the lower end support of the inclined handrail
The Kasagi connection fitting 59 is attached to the connection side of the handrail by using the recessed surface 69 and the screw, and the Kasagi connection fitting 59 can connect the Kasagi 36 of the handrail side frame 34 as described above.

The connecting fittings 52 and 53 are connected to the cap portion 54,
64, it only fits into the upper ends of the columns 16, 17 and does not have any special fixing means to the columns 16, 17. However, these connecting fittings 52, 53
Kasagi 36 connected to Kasagi connection parts 55, 65,
Or these connecting fittings 5 via Kasagi connecting fittings 59
The handrail side frame having a cap 36 connected to the cap 2 and 53 has a cap 36 connected to the cap 36 via a lattice material 38, and at the end of the rim 37, a rim stopper 4 is attached.
Since the connecting fittings 52 and 53 are connected to the pillars 16 and 17 by the frame receiving metal fittings 43, the connecting metal fittings 52 and 53 are connected to the pillars 16 and
There is no danger of it coming off the top end of 17.

Although a lattice structure was used as the side frame for the handrail, any other structure such as a panel structure may be used. Therefore, the connection structure between the handrail side frame and the support column is not limited to the connection structure using the furring stopper 40, the armrest receiving metal fitting 43, and the connecting fittings 52, 53 as in the above embodiment.

(Operations and effects of the invention) In the above embodiment, each part of the handrail structure was explained in detail, but in short, the features of the handrail structure according to the present invention are as follows.
A reinforcing core material is installed inside the pillar for constructing the handrail side frame, and the pillar is fixed to the stair frame or floor frame using a bolt whose inner end is threaded into the reinforcing core material.

According to the handrail structure of the present invention, the support columns can be easily bolted together, resulting in good workability and cost reduction compared to welding methods. Since the bolt can be screwed into the column from the frame side, there is no need to expose the bolt head or nut to the surface of the column. Moreover, the reinforcing core material inside the column not only reinforces the column itself, but also the inner end of the column fixing bolt is screwed into the core material to connect the side wall of the column between the core material and the column attachment member. Since it is designed to sandwich the support column, there is no need to concentrate stress around the bolts on the side wall of the support column, and even when using a support column made of relatively thin-walled pipe material, especially aluminum pipe material, the installation strength of the support support is sufficient. It can be increased to create a handrail with great safety.

[Brief explanation of drawings]

Figure 1 is a perspective view of a steel-frame outdoor stair unit, Figure 2 is a perspective view of the stair unit with a handrail attached, Figures 3 and 4 are side views of each part of the handrail, and Figure 5. 6 is a front view of each part of the handrail, FIG. 7 is a partial vertical side view of FIG. 6, FIG. 8 is a cross-sectional plan view showing the mounting structure of the handrail support, and FIG.
Figure 10 is an exploded perspective view showing the connection structure between the rim of the handrail side frame and the support, Figure 10 is an exploded perspective view showing the connection structure between the handrail side frame cap and support at the corner, and Figure 11 Figures 15 and 15 are side views showing the connection between the handrail side frame cap and the support, and Figure 12 is the
13 is a cross-sectional plan view of FIG. 11, FIG. 14 is a sectional view taken along line A-A of FIG.
6 is a vertical side view of FIG. 15, FIG. 17 is a cross-sectional plan view of FIG. 15, and FIG. 18 is a sectional view taken along the line B--B of FIG. 15. 1... Floor frame for landing, 2... Floor frame for second floor hallway, 3, 4... Stair frame, 5... Outward facing C-shaped steel, 6... Inward facing C-shaped steel, 9, 10...
Pillar mounting plate, 11-13... Inclined handrail on the side of the stair frame, 14... U-shaped horizontal handrail, 15... Horizontal handrail, 16-21... Pillar, 23... Reinforcement core material, 24... Handrail Angle material for installation, 25~
28...Bolt for mounting pillar, 29-35...
Side frame for handrail, 36...Kasagi, 37...Front edge, 38
... Lattice material, 40 ... Armrest stopper, 43 ... Armrest receiver, 45 ... Corner covering metal fitting, 49
...Downward U-shaped connecting fittings, 52, 53...
A connecting metal fitting that also serves as a prop cap.

Claims (1)

[Scope of utility model registration request] Fix columns to the upper and lower sides of the diagonal stair frame and the circumferential corners of floor frames such as landings, etc., with bolts whose inner ends are threaded into the reinforcing core material built into the columns. A stair handrail structure consisting of a handrail side frame installed in between.