JPH0332664Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is designed to cut the opposing diagonally cut ends of both horizontal frames at the corners of a hollow cylindrical horizontal frame such as a handrail installed on the roof of a building, balcony, or the edge of various passageways. It relates to a device for butting and connecting.

A conventional connecting device for corner portions of handrails and the like is described in Japanese Utility Model Publication No. 14288/1988.

This conventional device consists of a corner metal fitting that is fitted between both horizontal frames at a corner portion, a pair of connecting plates that are installed inside each horizontal frame on the inner side of the diagonally cut end, and a corner metal fitting and each connecting plate. Each horizontal frame has a plurality of upper and lower engaging ribs formed on its opposing inner surfaces, and when each connecting plate is installed in the horizontal frame, the above-mentioned engaging ribs are provided. An engaging portion is formed by removing a notch in a required width in the longitudinal direction of the connecting rib at a connecting plate attachment position which is an innermost part of the diagonally cut end, and the connecting plate is fitted and attached to this engaging portion, but A connecting bolt passed through the connecting plate of the lever is screwed onto a corner metal fitting inserted between both horizontal frames of the corner portion, so that each connecting plate and the corner metal fitting are attracted to each other via the connecting bolt.

However, in this connection device, in order to attach each coupling plate to the required position on the inner deep side of each horizontal frame, the multiple upper and lower engagement ribs formed on the inner surface of the horizontal frame as described above are attached to the plate of the coupling plate. It is necessary to remove a notch in the vertical direction by an amount equivalent to the thickness to form an engaging part, and to engage the connecting plate in the vertical direction into this engaging part. Therefore, it is necessary to create a horizontal frame to which this device can be applied. Generally, the horizontal frame has a U-shaped cross section with a rectangular cross section and an opening on the lower side, and this connecting device cannot be applied to connecting hollow cylindrical horizontal frames with a circular cross section.

Furthermore, in the above-mentioned conventional connecting device, the corner fittings are formed almost in the shape of a flat plate, so sufficient strength cannot be obtained at the connecting portion between both horizontal frames, and the work of forming the connecting plate attachment portion and attaching the connecting plate is difficult. The problem was that it was time-consuming and costly.

In view of the above-mentioned points, the present invention has been developed to provide a connection that enables connection of the corner portions of hollow cylindrical horizontal frames, improves the strength of the connection part, and facilitates manufacturing and assembly work. The purpose is to provide equipment.

The coupling device of the present invention that can achieve the above objectives is as follows:
A connecting device that connects opposing diagonally cut ends of both horizontal frames at a corner part of a hollow cylindrical horizontal frame such as a handrail butt against each other, and includes a corner member that is L-shaped in plan view and rectangular in cross section; a pair of rectangular frame-shaped bolting members having the same cross-sectional shape as the corner member;
A pair of through bolts are provided to connect the corner member and each bolting member, and an engaging strip is formed on the inner surface of each horizontal frame so that the edge portions of the outer surfaces of the corner member and each bolting member can engage. , each bolting member is inserted into each horizontal frame and fixed with screws from the outside, an L-shaped corner member is inserted between both horizontal frames at the corner portion, and each bolting member and corner member are connected to the horizontal frame. It is pulled and fixed via a through bolt placed inside.

Hereinafter, the present invention will be explained based on illustrated embodiments.

In Fig. 1, reference numeral 1 denotes a handrail attached to a handrail mounting frame 2 on a balcony, etc., and is a round pipe-shaped, hollow cylindrical, made of extruded material such as aluminum or its alloy, which constitutes the handrail cap. Hollow cylindrical supports 4 made of similar shaped materials are connected to the horizontal frame 2 at predetermined intervals in a T-shape.

At the corner of this handrail 1, the diagonally cut ends of the horizontal frames 3, 3 arranged at right angles are butted against each other, forming an L-shape in plan view and in cross section, as shown in FIGS. 2 and 3. An L-shaped hollow cylindrical corner member 5 having a rectangular shape is fitted over both the horizontal frames 3, 3. An L-shaped plate 6, which has a nut 6a fixed to the back side, is welded and fixed to each open end position of the corner member 5. Thus, a two-stage convex engagement strip 3a that continues in the longitudinal direction is formed on both sides of the inner surface of the horizontal frame 3, and a pair of L convex portions 3a constituting the nut insertion guide groove 7 are formed on the inner bottom of the horizontal frame 3. The shape pieces 3b, 3b and two parallel nut support pieces 3c, 3c located at the bottom position of the guide groove 7 are provided protrudingly, and the corner member 5 is formed at each ridge corner 5.
It is positioned within both horizontal frames 3, 3 by engaging a with the engagement strip 3a.

On the other hand, a rectangular frame-shaped bolt fixing member 8 having the same cross-sectional shape as the corner member 5 is installed in the horizontal frame 3 at a position directly above the pillars 4, 4 on both sides closest to the corner part. The ridge portion 8a is fixed in a fitted state to the engagement strip portion 3a. As shown in FIG. 4, this bolting member 8 is open at the corner side, and has a hanging wall section 8b on the opposite side.
A bolt insertion hole 9a is bored in the bottom wall part 8c.
A bolt insertion hole 9b is drilled in the bolt insertion hole 9b, and a fixing nut 10 is welded and fixed to the lower surface side of the bolt insertion hole 9b.
As shown in FIG. 5, the upper end of the connecting bolt 11 inserted into the support column 4 is screwed into the fixing nut 10 to be fixed. Thus, the corner member 5 has one end of a through bolt 12 inserted into the horizontal frame 5 screwed into the nut 6a of each L-shaped plate 6, and the through bolt 12
The other end is passed through the bolt insertion hole 9a of the bolt fixing member 8, and the nut 13 is screwed in and tightened from the outside, thereby being attracted and fixed from both sides. That is, this attractive force acts so as to press the diagonally cut ends of the two horizontal frames 3, 3 that are butted against each other at the corner portions.

In addition, the connection between the horizontal frame 3 and the support column 4 is achieved by using the connecting bolt 1 at the fixed part of the bolt fixing member 8 as shown in FIG.
The lower end of 1 is passed through the substantially downward U-shaped handrail mounting member 14 that is in contact with the base side opening end of the support 4, and a nut 15 is screwed and tightened from the lower surface side of the bolt. A structure is adopted in which the horizontal frame 3 and the mounting member 14 are attracted to each other via the member 8. In addition, in parts other than the above, a nut 1 inserted into the guide groove 7 is used instead of the bolt fixing member 8 as shown in FIG.
6, and by attracting the horizontal frame 3 and the mounting member 14 with the connecting bolt 11 in the same manner as described above,
The horizontal frame 3 and the support column 4 are connected. 17 is horizontal frame 3
Caulking putty 18 is interposed between the contact surface with the support column 4 for the purpose of providing watertightness and buffering. The seat plate 19 with a nut attached thereto and placed inside the support column 4 is a screw inserted into the screw hole 4a of the support column 4 through the mounting member 14 from the lower surface side. Therefore, the handrail 1 is mounted on the frame 2 by welding and fixing the mounting members 14 at the base of each column 4 to a steel plate 21 that is welded and fixed to the embedded reinforcing bars 20 at the bottom of the upper groove 2a of the frame 2. It is erected. 22 is a mortar layer filled in the groove 2a, 23 is a decorative cap made of aluminum or the like fitted to the erected base of the pivot portion, and 24 is a caulking material buried around the pillar 4 at the bottom of the decorative cap 23. .

In the above embodiment, the bolt fixing member 8 is fixed inside the horizontal frame 3 using the connecting bolt 11 that connects the support column 4 and the horizontal frame 3, but due to the difference in the configuration of the handrail 1, the connecting bolt 11 If you do not use
If the support position is far away from the corner, if necessary, screw 25, for example as shown in Fig. 7,
25 may be directly fixed at an appropriate position spaced apart from the corner portion.

The connecting device of the present invention connects a corner member that is L-shaped in plan view and rectangular in cross section, a pair of rectangular frame-shaped bolting members that have the same cross-sectional shape as the corner member, and the corner member and each bolting member. It consists of a pair of through bolts, and in particular, when fixing each bolting member to the required position deep inside each horizontal frame, bolts or screws are used from the outside of the horizontal frame to tighten the bolting member horizontally. Since it can be easily screwed to the frame, it becomes possible to easily connect the hollow cylindrical horizontal frame having a circular cross section.

In addition, since the inner surface of each horizontal frame is formed with an engagement strip that can be engaged with the ridged corners of the outer surfaces of the corner members and each bolting member, the corner members and each bolting member are connected to each horizontal frame. Positioning and mutual positioning of both horizontal frames can be performed reliably and easily.

In addition, since the corner members and each bolting member are both formed in the shape of a rectangular frame, these ridges are engaged with the engagement strips on the inner surface of the horizontal frame, and the connection between both horizontal frames is The necessary and sufficient strength can be ensured in the section.

Furthermore, since the connecting device of the present invention has a simple structure and a small number of parts, it is easy to manufacture and can reduce costs, as well as improving the efficiency of the connecting operation.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a handrail corner in an embodiment of the present invention, Fig. 2 is a perspective view of the main part showing how the horizontal frames of the corner are connected to each other, and Fig. 3 is a perspective view of the fitting of the corner members. A vertical cross-sectional view of the inserted horizontal frame, FIG. 4 is a vertical cross-sectional view of the bolted member, and FIG.
FIG. 6 is a vertical cross-sectional view of a main part showing a state of connection with the horizontal frame in another support portion, and FIG. 7 is a vertical cross-sectional view of a main part showing another example of a method of fixing a bolting member. 1...handrail, 3...horizontal frame, 3a...engaging strip, 5...
Corner member, 5a...edge corner part, 8...bolt fixing member, 8a...edge corner part, 12...through bolt.

Claims (1)

[Scope of utility model registration request] A connecting device that connects opposing diagonally cut ends of both horizontal frames at a corner part of a hollow cylindrical horizontal frame such as a handrail butt against each other, and includes a corner member that is L-shaped in plan view and rectangular in cross section; A pair of rectangular frame-shaped bolting members having the same cross-sectional shape as the corner member and a pair of through bolts connecting the corner member and each bolting member are provided. The ridge corners of each outer surface form an engageable engagement strip, and each bolt fixing member is inserted into each horizontal frame and fixed with screws from the outside,
For corner parts such as handrails, an L-shaped corner member is inserted between both horizontal frames of the corner part, and each bolt fixing member and the corner member are attracted and fixed via a through bolt arranged in the horizontal frame. Coupling device.