JPH0332663Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a connecting device for horizontal frames such as handrails installed on the rooftops, balconies, or edges of various passageways. The present invention relates to a connection device using a short cylindrical joint member with a split groove that is inserted between opposing ends of a frame.

Conventionally, as a connection device using the joint member as described above, there is a pipe connection device disclosed in Japanese Utility Model Application Publication No. 49-35116. This pipe connecting device has a slit (split groove) that has an outer diameter slightly larger than the inner diameter of the pipes and extends in the axial direction, and a hole for a restraining bolt that opens in the pipe diameter direction, in the opposing ends of both pipes to be connected. A joint member having a joint member is fitted into the joint member, and prior to the fitting, the outer diameter of the joint member is made smaller than the inner diameter of the pipe to be connected by tightening a restraining bolt passed through the through hole, However, after the joint member with the reduced diameter of the lever is inserted into the ends of both pipes, the restraining bolt is removed and the joint member expands in diameter by its elastic restoring force, thereby integrally connecting both pipes. .

However, with this kind of connection device, the joint member is simply pressed against the inner surface of the pipe due to its elastic restoring force and is connected to the pipe, so the elastic restoring force becomes brittle due to aging of the joint member due to long-term use. If this happens, there is a problem in that the pressure force against the pipe is lost and it becomes impossible to join. Particularly in the case of horizontal frame connecting devices used outdoors, such as handrails, there is a high tendency for the elastic force of the joint members to become brittle.

The present invention aims to solve the problems of the conventional connection device as described above.

The connecting device of the present invention for a horizontal frame such as a handrail, which can achieve the above object, forms an engaging strip continuous in the longitudinal direction on the inner surface of a cylindrical horizontal frame such as a drag, while the above-mentioned engaging strip is formed on the outer surface. A split groove extending from one end to the other end is formed in a short cylindrical joint member equipped with an engagement strip corresponding to the strip, and this joint member is attached on both sides at the connection between the ends of the horizontal frame. It is characterized in that it is fitted between the frames and screwed into the split groove from the horizontal frame with a screw having a diameter larger than the groove width of the split groove.

Hereinafter, the present invention will be explained based on illustrated embodiments. In FIGS. 1 and 2, reference numeral 1 denotes a handrail attached to a handrail mounting frame 2 on a balcony or the like, with round pipe-like horizontal frames 3 arranged at predetermined intervals on a round pipe-shaped horizontal frame 3 constituting the handrail cap. The pillars 4 are connected in a T-shape. The horizontal frame 3 is made of extruded material such as aluminum or its alloy,
Two parallel L-shaped pieces are provided at the top and bottom positions on both sides of the inner surface, and two parallel L-shaped pieces forming a guide groove 6 in which the rectangular plate-shaped nut member 5 is inserted in the inner bottom part. 3a, 3b, both L-shaped pieces 3a,
It has two parallel supporting pieces 3c, 3c located between 3b. The support column 4 is similarly made of an extruded material such as aluminum or its alloy, and has screw holes 4a along the longitudinal direction on the inner surface, and has an upper end surface that closely fits into the cylindrical circumferential surface of the horizontal frame 3. disconnected. This horizontal frame 3 and pillar 4 are
The upper end of the through bolt 7 inserted into the strut 4 is inserted into the horizontal frame 3 and screwed into the nut member 5 disposed in a non-rotating state in the guide groove 6, and the lower end thereof is inserted into the base side of the strut 4. By passing through the substantially downward U-shaped handrail mounting member 8 that abuts the opening end and screwing into the nut 9, the horizontal frame 3 and the mounting member 8 are attracted and fixed, and are connected in a T-shape. There is. 10 is a coking putty interposed between the contact surfaces of the horizontal frame 3 and the support column 4 to provide watertightness and cushioning properties, and 11 is a through bolt to prevent the upper part of the support column 4 from wobbling relative to the horizontal frame 3. A seat plate with a nut is screwed onto the upper part of 7 and arranged inside the support 4, and 12 is a screw that penetrates the mounting member 8 from the lower surface side of the mounting member 8 and is screwed into each screw hole 4a. Thus, the handrail 1 is erected on the frame 2 by welding and fixing the mounting member 8 to a steel plate 14 that is welded and fixed to the embedded reinforcing bars 13 at the bottom of the upper groove 2a of the frame 2. .
15 is a mortar layer filled in the groove 2a, 16 is a decorative cap made of aluminum or the like fitted to the base of the upright pillar 4, and 17 is a caulking material buried around the pillar 4 at the lower surface of the decorative cap 16. .

On the other hand, at the connecting portion between the ends of the horizontal frames 3, 3, a joint member 18 is fitted over both the horizontal frames 3, 3, as shown in FIGS. 3 and 4. This joint member 18 is formed from an extruded material such as aluminum or its alloy, and has a short cylindrical shape with only the lower surface being flat. A two-stage concave engagement strip 18a corresponding to the engagement strip 3a is formed, and screw holes 18b extending along the axial direction are provided at upper and lower positions on both sides of the inner surface, and a lower flat portion 18c is formed. A split groove 19 extending over both ends is cut on one side of the plate. As will be described later, the position of this dividing groove 19 is located at the lower surface flat portion 18c.
It may be located in the center of the

In order to fix the joint member 18 in the inserted state within the horizontal frames 3, 3, the outer diameter of the joint member 18 is set to be slightly larger than the inner diameter of the horizontal frame 3.
With this diameter reduced using the elasticity of the material so that the split groove 19 is narrowed, both horizontal frames are inserted so that the engaging strip 3a and the engaging strip 18a fit together, as shown in FIG. 3 and 3, and press it against the horizontal frame 3 from the inside by the diameter expanding action of the elastic restoring force, or as shown in FIG. By screwing a screw 20 with a diameter larger than the groove width of the split groove 19 from the outside of the horizontal frame 3 into the split groove 19 of the joint member 18 that has been fitted in the same way across the width of the joint member 18, and pushing the split groove 19 wider, the horizontal frame 3, there is a method of pressing the joint member 18 from the inside, and the present invention adopts the latter method. Incidentally, the dividing groove 19 may be provided at the center of the flat portion of the lower surface as shown in FIG. Incidentally, the screws 20 may be screwed into the split grooves 19 from both the horizontal frames 3, 3, respectively, or may be screwed into the split grooves 19 from the horizontal frames 3 on either side. Figure 8 shows both horizontal frames 3 and 3.
This figure shows a method in which a screw hole 18d is formed in the lower flat portion 18c of the joint member 18 that is fitted over the space, and a screw 20 penetrated from the lower surface side of the horizontal frame 3 is screwed into the screw hole 18d.

According to the method of screwing the large diameter screw 20 into the split groove 19 as shown in FIGS. 6 and 7, the split groove 1
9 can be simply cut and formed with a saw blade, etc., and screw 2 can be formed as is.
0 can be screwed in, it is not necessary to cut a tap for screwing the screw 20, that is, to form a screw hole 18d, and the joint member can be manufactured easily, compared to the example shown in FIG.

As shown in FIGS. 9 and 10, when it is necessary to attach the end cap 21 to the end surface of the horizontal frame 3 due to the configuration of the handrail 1, the joint member 18 is fitted to the end inside the horizontal frame 3. Insert the screw hole 1
8b and screw the end cap 21 with the screw 22.
can be fixed with screws. Furthermore, when fixing the horizontal frame 3 of the handrail 1 to the wall of a building as shown in FIG.
8, and using the screw hole 18b, fix the circular sealing plate part 23a of the mounting member 23 to the end face of the horizontal frame 3 with the screw 22 in the same manner as the end cap 21, and then attach the mounting member 23 to the bolt part 23b. By screwing with the nut 24, it can be connected to a substantially U-shaped mounting frame 26 fixed to the wall portion 25. Reference numeral 27 denotes a mounting base consisting of a reinforcing bar 27a embedded in the wall portion 25 and an iron plate 27b, and the iron plate 27b
A mounting frame 26 is welded and fixed to. Furthermore, the first
0 and 11, the joint member 18 is fixed to the horizontal frame 3 by screwing the screw 20 into its screw hole 18d, but various methods for connecting the horizontal frames 3, 3 described above can be used as means for this fixing. Can be adopted.

FIG. 12 shows a joint member 1 in which the arrangement of screw holes 18b is different in the horizontal frame 3 having the same structure as in the above-mentioned embodiment.
8 is shown inserted. Incidentally, in this joint member 18, among the four engagement strips 18a, the lower portions on both sides are formed into single-step recesses. In this way, joint members 18 having various positions and numbers of screw holes 18b can be used. Further, the shape of the engagement strip 3a of the horizontal frame 3 and the corresponding engagement strip 18a of the joint member 18 and the formation position of the split groove 19 can be changed in various ways other than those of the above-described embodiments. Further, in the above-mentioned embodiment, the horizontal frame 3 has a round pipe shape, but it may have another cylindrical structure such as a square cylinder shape, and the joint member 18
The external shape can also be changed accordingly.

The connecting device for a horizontal frame such as a handrail according to the present invention is such that a joint member having a split groove formed from one end to the other is inserted between both horizontal frames at the connection between the ends of the horizontal frame. Since it is made by screwing a screw with a diameter larger than the groove width of the split groove from the frame into the split groove, by screwing in the screw when connecting the horizontal frame, the groove width of the split groove is forcibly expanded. As a result, the outer surface of the joint member is firmly pressed against the inner surfaces of both horizontal frames, and the pressure of the joint member against the inner surfaces of both horizontal frames remains unchanged for a long period of time. Therefore, the two transverse frames are reliably and firmly connected for a long period of time via this joint member. In addition, in this case, since a screw with a larger diameter than this is screwed into the split groove, there is no need to specially drill a screw hole in the joint member.
Therefore, the joint member can be easily manufactured and the cost can be reduced.

Further, according to the connecting device of the present invention, the joint member is fitted into each horizontal frame with the engaging strip on the inner surface thereof engaged with the engaging strip on the outer surface of the horizontal frame. The joint member can be easily positioned in the circumferential direction with respect to the horizontal frame, and therefore the work of drilling the screw insertion hole for the split groove screw in the horizontal frame can be performed reliably and easily.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a handrail in an upright state according to an embodiment of the present invention, Fig. 2 is a vertical sectional view of the same, and Fig. 3 is a vertical sectional view of the handrail.
The figure is an exploded perspective view showing the connected state of the ends of the horizontal frame, FIG. 4 is a vertical sectional view of the same, FIGS. 5 to 8 are longitudinal sectional views showing the means for fixing the joint member, and FIG. 9 is an end view. Fig. 10 is a cross-sectional view taken along line X-X in Fig. 9, Fig. 11 is a vertical sectional view of the horizontal frame attached to the wall, Fig. 12 is a perspective view of the cap in its installed state, and Fig. 12 shows different joint members. It is a vertical cross-sectional view of the horizontal frame into which the 1... Handrail, 3... Horizontal frame, 3a... Engagement strip, 18
...Joint member, 18a...Engagement strip, 18b...
Screw hole, 19...split groove, 20...screw.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A cylindrical horizontal frame such as a handrail, etc., whose inner surface is provided with a longitudinally continuous engagement strip, and whose outer surface is provided with an engagement strip corresponding to the engagement strip. A split groove extending from one end to the other end is formed in a short cylindrical joint member, and this joint member is inserted between both horizontal frames at the connection between the ends of the horizontal frame, and the split groove is inserted from the horizontal frame into the joint member. A connecting device for a horizontal frame such as a handrail, which is made by screwing into a groove a screw with a diameter larger than the groove width of the split groove. 2. A connecting device for a horizontal frame such as a handrail as claimed in claim 1, wherein the joint member is provided with a plurality of screw holes in the axial direction on the inner surface thereof.